ЛР 3 готова. Нужно проверить пару моментов, но в целом всё должно быть нормально

Merge pull request 'Kuzarin_maxim_lab_2' (#8 ) from kuzarin_maxim_lab_2 into main
Reviewed-on: Alexey/DAS_2024_1#8
2024-09-19 10:53:49 +03:00 · 2024-09-19 11:19:58 +04:00 · 2024-09-17 14:13:30 +03:00
83 changed files with 3670 additions and 0 deletions
--- a/kuzarin_maxim_lab_2/.dockerignore
+++ b/kuzarin_maxim_lab_2/.dockerignore
@@ -0,0 +1,30 @@
+**/.classpath
+**/.dockerignore
+**/.env
+**/.git
+**/.gitignore
+**/.project
+**/.settings
+**/.toolstarget
+**/.vs
+**/.vscode
+**/*.*proj.user
+**/*.dbmdl
+**/*.jfm
+**/azds.yaml
+**/bin
+**/charts
+**/docker-compose*
+**/Dockerfile*
+**/node_modules
+**/npm-debug.log
+**/obj
+**/secrets.dev.yaml
+**/values.dev.yaml
+LICENSE
+README.md
+!**/.gitignore
+!.git/HEAD
+!.git/config
+!.git/packed-refs
+!.git/refs/heads/**
--- a/kuzarin_maxim_lab_2/.gitignore
+++ b/kuzarin_maxim_lab_2/.gitignore
@@ -0,0 +1,490 @@
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from `dotnet new gitignore`
+
+# dotenv files
+.env
+
+# User-specific files
+*.rsuser
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Mono auto generated files
+mono_crash.*
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+[Ww][Ii][Nn]32/
+[Aa][Rr][Mm]/
+[Aa][Rr][Mm]64/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+[Ll]ogs/
+
+# Visual Studio 2015/2017 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# Visual Studio 2017 auto generated files
+Generated\ Files/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUnit
+*.VisualState.xml
+TestResult.xml
+nunit-*.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# Benchmark Results
+BenchmarkDotNet.Artifacts/
+
+# .NET
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+# Tye
+.tye/
+
+# ASP.NET Scaffolding
+ScaffoldingReadMe.txt
+
+# StyleCop
+StyleCopReport.xml
+
+# Files built by Visual Studio
+*_i.c
+*_p.c
+*_h.h
+*.ilk
+*.meta
+*.obj
+*.iobj
+*.pch
+*.pdb
+*.ipdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*_wpftmp.csproj
+*.log
+*.tlog
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+*.sap
+
+# Visual Studio Trace Files
+*.e2e
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# AxoCover is a Code Coverage Tool
+.axoCover/*
+!.axoCover/settings.json
+
+# Coverlet is a free, cross platform Code Coverage Tool
+coverage*.json
+coverage*.xml
+coverage*.info
+
+# Visual Studio code coverage results
+*.coverage
+*.coveragexml
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# Note: Comment the next line if you want to checkin your web deploy settings,
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
+*.publishproj
+
+# Microsoft Azure Web App publish settings. Comment the next line if you want to
+# checkin your Azure Web App publish settings, but sensitive information contained
+# in these scripts will be unencrypted
+PublishScripts/
+
+# NuGet Packages
+*.nupkg
+# NuGet Symbol Packages
+*.snupkg
+# The packages folder can be ignored because of Package Restore
+**/[Pp]ackages/*
+# except build/, which is used as an MSBuild target.
+!**/[Pp]ackages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/[Pp]ackages/repositories.config
+# NuGet v3's project.json files produces more ignorable files
+*.nuget.props
+*.nuget.targets
+
+# Microsoft Azure Build Output
+csx/
+*.build.csdef
+
+# Microsoft Azure Emulator
+ecf/
+rcf/
+
+# Windows Store app package directories and files
+AppPackages/
+BundleArtifacts/
+Package.StoreAssociation.xml
+_pkginfo.txt
+*.appx
+*.appxbundle
+*.appxupload
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!?*.[Cc]ache/
+
+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+orleans.codegen.cs
+
+# Including strong name files can present a security risk
+# (https://github.com/github/gitignore/pull/2483#issue-259490424)
+#*.snk
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+ServiceFabricBackup/
+*.rptproj.bak
+
+# SQL Server files
+*.mdf
+*.ldf
+*.ndf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+*.rptproj.rsuser
+*- [Bb]ackup.rdl
+*- [Bb]ackup ([0-9]).rdl
+*- [Bb]ackup ([0-9][0-9]).rdl
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+node_modules/
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt
+
+# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
+*.vbw
+
+# Visual Studio 6 auto-generated project file (contains which files were open etc.)
+*.vbp
+
+# Visual Studio 6 workspace and project file (working project files containing files to include in project)
+*.dsw
+*.dsp
+
+# Visual Studio 6 technical files
+*.ncb
+*.aps
+
+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# CodeRush personal settings
+.cr/personal
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
+
+# Tabs Studio
+*.tss
+
+# Telerik's JustMock configuration file
+*.jmconfig
+
+# BizTalk build output
+*.btp.cs
+*.btm.cs
+*.odx.cs
+*.xsd.cs
+
+# OpenCover UI analysis results
+OpenCover/
+
+# Azure Stream Analytics local run output
+ASALocalRun/
+
+# MSBuild Binary and Structured Log
+*.binlog
+
+# NVidia Nsight GPU debugger configuration file
+*.nvuser
+
+# MFractors (Xamarin productivity tool) working folder
+.mfractor/
+
+# Local History for Visual Studio
+.localhistory/
+
+# Visual Studio History (VSHistory) files
+.vshistory/
+
+# BeatPulse healthcheck temp database
+healthchecksdb
+
+# Backup folder for Package Reference Convert tool in Visual Studio 2017
+MigrationBackup/
+
+# Ionide (cross platform F# VS Code tools) working folder
+.ionide/
+
+# Fody - auto-generated XML schema
+FodyWeavers.xsd
+
+# VS Code files for those working on multiple tools
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+*.code-workspace
+
+# Local History for Visual Studio Code
+.history/
+
+# Windows Installer files from build outputs
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# JetBrains Rider
+*.sln.iml
+.idea
+
+##
+## Visual studio for Mac
+##
+
+
+# globs
+Makefile.in
+*.userprefs
+*.usertasks
+config.make
+config.status
+aclocal.m4
+install-sh
+autom4te.cache/
+*.tar.gz
+tarballs/
+test-results/
+
+# Mac bundle stuff
+*.dmg
+*.app
+
+# content below from: https://github.com/github/gitignore/blob/master/Global/macOS.gitignore
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+# content below from: https://github.com/github/gitignore/blob/master/Global/Windows.gitignore
+# Windows thumbnail cache files
+Thumbs.db
+ehthumbs.db
+ehthumbs_vista.db
+
+# Dump file
+*.stackdump
+
+# Folder config file
+[Dd]esktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+# Vim temporary swap files
+*.swp
+
+# Delete volumes
+/volumes
+
+# Delete .vs folder
+/.vs/*
--- a/kuzarin_maxim_lab_2/DAaS_FileConnections.sln
+++ b/kuzarin_maxim_lab_2/DAaS_FileConnections.sln
@@ -0,0 +1,37 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.10.34916.146
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DAaS_FileConnections", "DAaS_FileConnections\DAaS_FileConnections.csproj", "{23B07B06-0AB4-42F8-9753-264639E1D38B}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FirstApplication", "FirstApplication\FirstApplication.csproj", "{FBC01B2E-C887-42D1-A899-3C4781EF67E9}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SecondApplication", "SecondApplication\SecondApplication.csproj", "{5888DB56-82F2-467D-8F6B-AB94CC4A33B5}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{23B07B06-0AB4-42F8-9753-264639E1D38B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{23B07B06-0AB4-42F8-9753-264639E1D38B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{23B07B06-0AB4-42F8-9753-264639E1D38B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{23B07B06-0AB4-42F8-9753-264639E1D38B}.Release|Any CPU.Build.0 = Release|Any CPU
+		{FBC01B2E-C887-42D1-A899-3C4781EF67E9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{FBC01B2E-C887-42D1-A899-3C4781EF67E9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{FBC01B2E-C887-42D1-A899-3C4781EF67E9}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{FBC01B2E-C887-42D1-A899-3C4781EF67E9}.Release|Any CPU.Build.0 = Release|Any CPU
+		{5888DB56-82F2-467D-8F6B-AB94CC4A33B5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{5888DB56-82F2-467D-8F6B-AB94CC4A33B5}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{5888DB56-82F2-467D-8F6B-AB94CC4A33B5}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{5888DB56-82F2-467D-8F6B-AB94CC4A33B5}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {E290B7D1-0F4E-406E-ADF3-8F543C0FA96E}
+	EndGlobalSection
+EndGlobal
--- a/kuzarin_maxim_lab_2/DAaS_FileConnections/DAaS_FileConnections.csproj
+++ b/kuzarin_maxim_lab_2/DAaS_FileConnections/DAaS_FileConnections.csproj
@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="PIHelperSh.RandomEx" Version="1.0.0" />
+  </ItemGroup>
+
+</Project>
--- a/kuzarin_maxim_lab_2/DAaS_FileConnections/Program.cs
+++ b/kuzarin_maxim_lab_2/DAaS_FileConnections/Program.cs
@@ -0,0 +1,29 @@
+
+using PIHelperSh.RandomEx.Extentions;
+
+string inputPath = Environment.GetEnvironmentVariable("INPUT_PATH") ?? ".\\input1";
+string outputPath = Environment.GetEnvironmentVariable("OUTPUT_PATH") ?? ".\\output1";
+
+if(!Directory.Exists(inputPath))
+    Directory.CreateDirectory(inputPath);
+
+if(!Directory.Exists(outputPath))
+    Directory.CreateDirectory(outputPath);
+
+var rnd = new Random();
+
+for (int i = 0; i < rnd.Next(1000); i++)
+{
+    using var writer = new StreamWriter(Path.Combine(inputPath, $"{rnd.NextString(10)}.txt"), false);
+
+    for (int j = 0; j < rnd.Next(1000); j++)
+
+    {
+        writer.WriteLine(rnd.Next());
+    }
+    writer.Close();
+}
+
+
+
+
--- a/kuzarin_maxim_lab_2/FirstApplication/Dockerfile
+++ b/kuzarin_maxim_lab_2/FirstApplication/Dockerfile
@@ -0,0 +1,35 @@
+# Это базовый образ для сборки.
+FROM mcr.microsoft.com/dotnet/runtime:8.0 AS base
+# Указываем рабочий каталог для следующих комманд
+WORKDIR /app	
+
+# Проект нужно сначала собрать, поэтому берём sdk
+FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build 
+# Это пременная. Будем собирать в режиме Relece. 
+ARG BUILD_CONFIGURATION=Release														
+WORKDIR /src
+# Копируем из папки хоста в контейнер
+COPY ["FirstApplication.csproj", "FirstApplication/"]
+# Выполняем комманду для загрузки всех нужных зависимостей
+RUN dotnet restore "FirstApplication/FirstApplication.csproj"
+# Назначаем новую базовую папку
+WORKDIR "/src/FirstApplication"
+# Копируем всё в папку для сборки
+COPY . .		
+# Выполняем сборку проекта
+RUN dotnet build "FirstApplication.csproj" -c $BUILD_CONFIGURATION -o /app/build
+
+# В этот этап попадает всё, что было в publish
+FROM build AS publish																										
+ARG BUILD_CONFIGURATION=Release	
+# Публикуем всё в папку /app/publish
+RUN dotnet publish "FirstApplication.csproj" -c $BUILD_CONFIGURATION -o /app/publish --self-contained false --no-restore	
+
+# Берём тот образ, что определили в первой строке
+FROM base AS final
+# Указываем рабочую директорию
+WORKDIR /app
+# Из опубликованного блока берём то, что опубликовано и закидывае в /app
+COPY --from=publish /app/publish .
+# Указываем комманду запуска приложения (когда контейнер запустится, то начнёт с этого)
+ENTRYPOINT ["dotnet", "FirstApplication.dll"]	
--- a/kuzarin_maxim_lab_2/FirstApplication/FirstApplication.csproj
+++ b/kuzarin_maxim_lab_2/FirstApplication/FirstApplication.csproj
@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <DockerDefaultTargetOS>Linux</DockerDefaultTargetOS>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.20.1" />
+  </ItemGroup>
+
+</Project>
--- a/kuzarin_maxim_lab_2/FirstApplication/Program.cs
+++ b/kuzarin_maxim_lab_2/FirstApplication/Program.cs
@@ -0,0 +1,17 @@
+Console.WriteLine("Запущен первый сервис");
+string inputPath = Environment.GetEnvironmentVariable("INPUT_PATH") ?? "./input1";
+string outputPath = Environment.GetEnvironmentVariable("OUTPUT_PATH") ?? "./output1";
+
+if (!Directory.Exists(inputPath))
+    Directory.CreateDirectory(inputPath);
+
+if (!Directory.Exists(outputPath))
+    Directory.CreateDirectory(outputPath);
+
+var file = new DirectoryInfo(inputPath).EnumerateFiles().Aggregate((x, y) => x.Length > y.Length ? x : y);
+
+var outputFilePath = Path.Combine(outputPath, "data.txt");
+
+if(File.Exists(outputFilePath))
+    File.Delete(outputFilePath);
+File.Move(file.FullName, Path.Combine(outputPath, "data.txt"));
--- a/kuzarin_maxim_lab_2/FirstApplication/Properties/launchSettings.json
+++ b/kuzarin_maxim_lab_2/FirstApplication/Properties/launchSettings.json
@@ -0,0 +1,10 @@
+{
+  "profiles": {
+    "FirstApplication": {
+      "commandName": "Project"
+    },
+    "Container (Dockerfile)": {
+      "commandName": "Docker"
+    }
+  }
+}
--- a/kuzarin_maxim_lab_2/README.md
+++ b/kuzarin_maxim_lab_2/README.md
@@ -0,0 +1,25 @@
+# Лабораторная работа 2
+Данная работа посвящена теме создания контейнеров из исходного кода посредства dockerfile, а так же взаимодействию сервисов через общие папки
+## Описание
+Был варана следующая комбинация вариантов:
+ - Первое приложение - 0-ой
+ - Второе приложение - 1-ый
+В результате, после запуска система изучит папку ./volumes/input, найдёт самый большой файл, а затем найдёт в нём самое большое число, выведя в директорию ./volumes/output файл с его квадратом. 
+Буфер же, по сути не имеет физического отображения на папку хоста.
+## Запуск
+Для запуска лабораторной работы необходимо иметь запущенный движок Docker на устройстве.
+Необходимо перейти в папку, где располагается данный файл. Далее открыть терминал и ввести команду:
+```
+docker compose up --build
+```
+В данном случае флаг `--build` заставит систему в любом случае собрать образы из исходников (даже если они уже есть). 
+В результате, после сборки оба сервиса запустятся и выведут в консоль логи примерно следующего содержания:
+## Описание dockerfile файла
+Подробное описание дано в виде комментариев в самом файле первого сервиса. Так как для разработки использовался .net 8.0, команд довольно много. При этом, так как второй сервис написан на той же платформе, особенных отличий двух docekrfile-ов нет(кроме пути
+## Описание compose файла
+Благодаря директиве `depends_on` в compose файле второй сервис будет ждать, пока не будет поднят первый сервис, и только потом начнёт подниматься. 
+Директива `build` позволяет использовать в compose не уже готовый образ, а тот, что будет собран непосредственно в момент запуска(если он уже существует и нет флага силовой сборки, будет использоваться существующий образ) 
+Область volumes позволяет создать буферную область. Эту папку можно монтировать как результирующую для первого сервиса и исходную - для второго
+## Видеодемонстрация
+Был записан видеоролик, демонстрирующий процесс запуска и работы сервисов. Он расположен по [адресу](https://drive.google.com/file/d/1sACiKx3_HRApa89a7LZFAZV05o7POhq6/view?usp=sharing)
+
--- a/kuzarin_maxim_lab_2/SecondApplication/Dockerfile
+++ b/kuzarin_maxim_lab_2/SecondApplication/Dockerfile
@@ -0,0 +1,20 @@
+FROM mcr.microsoft.com/dotnet/runtime:8.0 AS base
+WORKDIR /app
+
+FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
+ARG BUILD_CONFIGURATION=Release
+WORKDIR /src
+COPY ["SecondApplication.csproj", "SecondApplication/"]
+RUN dotnet restore "./SecondApplication/SecondApplication.csproj"
+WORKDIR "/src/SecondApplication"
+COPY . .
+RUN dotnet build "SecondApplication.csproj" -c $BUILD_CONFIGURATION -o /app/build
+
+FROM build AS publish
+ARG BUILD_CONFIGURATION=Release
+RUN dotnet publish "SecondApplication.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false
+
+FROM base AS final
+WORKDIR /app
+COPY --from=publish /app/publish .
+ENTRYPOINT ["dotnet", "SecondApplication.dll"]
--- a/kuzarin_maxim_lab_2/SecondApplication/Program.cs
+++ b/kuzarin_maxim_lab_2/SecondApplication/Program.cs
@@ -0,0 +1,31 @@
+Console.WriteLine("Запущен второй сервис");
+string inputPath = Environment.GetEnvironmentVariable("INPUT_PATH") ?? ".\\input2";
+string outputPath = Environment.GetEnvironmentVariable("OUTPUT_PATH") ?? ".\\output2";
+
+if (!Directory.Exists(outputPath))
+    Directory.CreateDirectory(outputPath);
+
+var inputFilePath = Path.Combine(inputPath, "data.txt");
+var outputFilePath = Path.Combine(outputPath, "result.txt");
+
+if (!File.Exists(inputFilePath))
+{
+    Console.WriteLine($"Нет исходного файла {inputFilePath}");
+    return;
+}
+
+using var reader = new StreamReader(inputFilePath);
+
+long maxNumber = 0;
+
+while (true)
+{
+    var str = reader.ReadLine();
+    if (str == null) break;
+
+    if (long.TryParse(str, out var number) && number > maxNumber)
+        maxNumber = number;
+}
+
+File.WriteAllText(outputFilePath, (maxNumber * maxNumber).ToString());
+Console.WriteLine($"Результат выполнения: {maxNumber * maxNumber}");
--- a/kuzarin_maxim_lab_2/SecondApplication/Properties/launchSettings.json
+++ b/kuzarin_maxim_lab_2/SecondApplication/Properties/launchSettings.json
@@ -0,0 +1,10 @@
+{
+  "profiles": {
+    "SecondApplication": {
+      "commandName": "Project"
+    },
+    "Container (Dockerfile)": {
+      "commandName": "Docker"
+    }
+  }
+}
--- a/kuzarin_maxim_lab_2/SecondApplication/SecondApplication.csproj
+++ b/kuzarin_maxim_lab_2/SecondApplication/SecondApplication.csproj
@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <DockerDefaultTargetOS>Linux</DockerDefaultTargetOS>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.20.1" />
+  </ItemGroup>
+
+</Project>
--- a/kuzarin_maxim_lab_2/docker-compose.yml
+++ b/kuzarin_maxim_lab_2/docker-compose.yml
@@ -0,0 +1,22 @@
+services:
+  first:
+    build: ./FirstApplication/
+    volumes:
+      - ./volumes/input:/var/data
+      - buffer:/var/result
+    environment:
+      INPUT_PATH: "/var/data"
+      OUTPUT_PATH: "/var/result"
+  
+  second:
+    build: ./SecondApplication/
+    depends_on:
+      - first
+    volumes:
+      - buffer:/var/data
+      - ./volumes/output:/var/result
+    environment:
+      INPUT_PATH: "/var/data"
+      OUTPUT_PATH: "/var/result"
+volumes:
+  buffer:
--- a/kuzarin_maxim_lab_3/.dockerignore
+++ b/kuzarin_maxim_lab_3/.dockerignore
@@ -0,0 +1,30 @@
+**/.classpath
+**/.dockerignore
+**/.env
+**/.git
+**/.gitignore
+**/.project
+**/.settings
+**/.toolstarget
+**/.vs
+**/.vscode
+**/*.*proj.user
+**/*.dbmdl
+**/*.jfm
+**/azds.yaml
+**/bin
+**/charts
+**/docker-compose*
+**/Dockerfile*
+**/node_modules
+**/npm-debug.log
+**/obj
+**/secrets.dev.yaml
+**/values.dev.yaml
+LICENSE
+README.md
+!**/.gitignore
+!.git/HEAD
+!.git/config
+!.git/packed-refs
+!.git/refs/heads/**
--- a/kuzarin_maxim_lab_3/.gitattributes
+++ b/kuzarin_maxim_lab_3/.gitattributes
@@ -0,0 +1,63 @@
+###############################################################################
+# Set default behavior to automatically normalize line endings.
+###############################################################################
+* text=auto
+
+###############################################################################
+# Set default behavior for command prompt diff.
+#
+# This is need for earlier builds of msysgit that does not have it on by
+# default for csharp files.
+# Note: This is only used by command line
+###############################################################################
+#*.cs     diff=csharp
+
+###############################################################################
+# Set the merge driver for project and solution files
+#
+# Merging from the command prompt will add diff markers to the files if there
+# are conflicts (Merging from VS is not affected by the settings below, in VS
+# the diff markers are never inserted). Diff markers may cause the following 
+# file extensions to fail to load in VS. An alternative would be to treat
+# these files as binary and thus will always conflict and require user
+# intervention with every merge. To do so, just uncomment the entries below
+###############################################################################
+#*.sln       merge=binary
+#*.csproj    merge=binary
+#*.vbproj    merge=binary
+#*.vcxproj   merge=binary
+#*.vcproj    merge=binary
+#*.dbproj    merge=binary
+#*.fsproj    merge=binary
+#*.lsproj    merge=binary
+#*.wixproj   merge=binary
+#*.modelproj merge=binary
+#*.sqlproj   merge=binary
+#*.wwaproj   merge=binary
+
+###############################################################################
+# behavior for image files
+#
+# image files are treated as binary by default.
+###############################################################################
+#*.jpg   binary
+#*.png   binary
+#*.gif   binary
+
+###############################################################################
+# diff behavior for common document formats
+# 
+# Convert binary document formats to text before diffing them. This feature
+# is only available from the command line. Turn it on by uncommenting the 
+# entries below.
+###############################################################################
+#*.doc   diff=astextplain
+#*.DOC   diff=astextplain
+#*.docx  diff=astextplain
+#*.DOCX  diff=astextplain
+#*.dot   diff=astextplain
+#*.DOT   diff=astextplain
+#*.pdf   diff=astextplain
+#*.PDF   diff=astextplain
+#*.rtf   diff=astextplain
+#*.RTF   diff=astextplain
--- a/kuzarin_maxim_lab_3/.gitignore
+++ b/kuzarin_maxim_lab_3/.gitignore
@@ -0,0 +1,363 @@
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
+
+# User-specific files
+*.rsuser
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Mono auto generated files
+mono_crash.*
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+[Ww][Ii][Nn]32/
+[Aa][Rr][Mm]/
+[Aa][Rr][Mm]64/
+bld/
+[Bb]in/
+[Oo]bj/
+[Oo]ut/
+[Ll]og/
+[Ll]ogs/
+
+# Visual Studio 2015/2017 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# Visual Studio 2017 auto generated files
+Generated\ Files/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUnit
+*.VisualState.xml
+TestResult.xml
+nunit-*.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# Benchmark Results
+BenchmarkDotNet.Artifacts/
+
+# .NET Core
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+# ASP.NET Scaffolding
+ScaffoldingReadMe.txt
+
+# StyleCop
+StyleCopReport.xml
+
+# Files built by Visual Studio
+*_i.c
+*_p.c
+*_h.h
+*.ilk
+*.meta
+*.obj
+*.iobj
+*.pch
+*.pdb
+*.ipdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*_wpftmp.csproj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+*.sap
+
+# Visual Studio Trace Files
+*.e2e
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# AxoCover is a Code Coverage Tool
+.axoCover/*
+!.axoCover/settings.json
+
+# Coverlet is a free, cross platform Code Coverage Tool
+coverage*.json
+coverage*.xml
+coverage*.info
+
+# Visual Studio code coverage results
+*.coverage
+*.coveragexml
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# Note: Comment the next line if you want to checkin your web deploy settings,
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
+*.publishproj
+
+# Microsoft Azure Web App publish settings. Comment the next line if you want to
+# checkin your Azure Web App publish settings, but sensitive information contained
+# in these scripts will be unencrypted
+PublishScripts/
+
+# NuGet Packages
+*.nupkg
+# NuGet Symbol Packages
+*.snupkg
+# The packages folder can be ignored because of Package Restore
+**/[Pp]ackages/*
+# except build/, which is used as an MSBuild target.
+!**/[Pp]ackages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/[Pp]ackages/repositories.config
+# NuGet v3's project.json files produces more ignorable files
+*.nuget.props
+*.nuget.targets
+
+# Microsoft Azure Build Output
+csx/
+*.build.csdef
+
+# Microsoft Azure Emulator
+ecf/
+rcf/
+
+# Windows Store app package directories and files
+AppPackages/
+BundleArtifacts/
+Package.StoreAssociation.xml
+_pkginfo.txt
+*.appx
+*.appxbundle
+*.appxupload
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!?*.[Cc]ache/
+
+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+orleans.codegen.cs
+
+# Including strong name files can present a security risk
+# (https://github.com/github/gitignore/pull/2483#issue-259490424)
+#*.snk
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+ServiceFabricBackup/
+*.rptproj.bak
+
+# SQL Server files
+*.mdf
+*.ldf
+*.ndf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+*.rptproj.rsuser
+*- [Bb]ackup.rdl
+*- [Bb]ackup ([0-9]).rdl
+*- [Bb]ackup ([0-9][0-9]).rdl
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+node_modules/
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt
+
+# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
+*.vbw
+
+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# CodeRush personal settings
+.cr/personal
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
+
+# Tabs Studio
+*.tss
+
+# Telerik's JustMock configuration file
+*.jmconfig
+
+# BizTalk build output
+*.btp.cs
+*.btm.cs
+*.odx.cs
+*.xsd.cs
+
+# OpenCover UI analysis results
+OpenCover/
+
+# Azure Stream Analytics local run output
+ASALocalRun/
+
+# MSBuild Binary and Structured Log
+*.binlog
+
+# NVidia Nsight GPU debugger configuration file
+*.nvuser
+
+# MFractors (Xamarin productivity tool) working folder
+.mfractor/
+
+# Local History for Visual Studio
+.localhistory/
+
+# BeatPulse healthcheck temp database
+healthchecksdb
+
+# Backup folder for Package Reference Convert tool in Visual Studio 2017
+MigrationBackup/
+
+# Ionide (cross platform F# VS Code tools) working folder
+.ionide/
+
+# Fody - auto-generated XML schema
+FodyWeavers.xsd
--- a/kuzarin_maxim_lab_3/DSaC.sln
+++ b/kuzarin_maxim_lab_3/DSaC.sln
@@ -0,0 +1,31 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.10.34916.146
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "DSaC", "DSaC\DSaC.csproj", "{C1051C12-D7D0-4C77-AFBC-4F5FFD8EE367}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DSaC_second", "DSaC_second\DSaC_second.csproj", "{64F78585-2BBC-4656-BC50-41FBB8917719}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{C1051C12-D7D0-4C77-AFBC-4F5FFD8EE367}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C1051C12-D7D0-4C77-AFBC-4F5FFD8EE367}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C1051C12-D7D0-4C77-AFBC-4F5FFD8EE367}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C1051C12-D7D0-4C77-AFBC-4F5FFD8EE367}.Release|Any CPU.Build.0 = Release|Any CPU
+		{64F78585-2BBC-4656-BC50-41FBB8917719}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{64F78585-2BBC-4656-BC50-41FBB8917719}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{64F78585-2BBC-4656-BC50-41FBB8917719}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{64F78585-2BBC-4656-BC50-41FBB8917719}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {30D05708-634E-4FDE-9BCA-5A1B7A5EFF59}
+	EndGlobalSection
+EndGlobal
--- a/kuzarin_maxim_lab_3/DSaC/Controllers/CounterpartiesController.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Controllers/CounterpartiesController.cs
@@ -0,0 +1,88 @@
+using DSaC.Models.DTOs;
+using DSaC.Models.Internal.Queries;
+using DSaC.Models.Internal.Сommands;
+using MediatR;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+
+namespace DSaC.Controllers
+{
+    [Route("api/[controller]")]
+    [ApiController]
+    public class CounterpartiesController : ControllerBase
+    {
+        private readonly IMediator mediator;
+
+        public CounterpartiesController(IMediator mediator)
+        {
+            this.mediator = mediator;
+        }
+
+        [HttpGet("")]
+        public async Task<IActionResult> GetCounterparties(
+            [FromQuery] int page = 0, 
+            [FromQuery] int pageSize = 10, 
+            [FromQuery] List<Guid>? ids = null
+            )
+        {
+            var request = new GetCounterpartiesQuery
+            {
+                Page = page,
+                PageSize = pageSize,
+                Ids = ids
+            };
+
+            var response = await mediator.Send(request);
+
+            return !response.IsError ? Ok(response.Value) : StatusCode(response.ErrorCode!.Value, response.ErrorText);
+        }
+
+        [HttpGet("{uuid:guid}")]
+        public async Task<IActionResult> GetFullCounterparty([FromRoute] Guid uuid)
+        {
+            var request = new GetCounterpartyQuery
+            {
+                Id = uuid
+            };
+
+            var response = await mediator.Send(request);
+
+            return !response.IsError ? Ok(response.Value) : StatusCode(response.ErrorCode!.Value, response.ErrorText);
+        }
+
+        [HttpPost("")]
+        public async Task<IActionResult> CreateCounterparty([FromBody] CounterpartyBaseDto dto)
+        {
+            var response = await mediator.Send(new CreateCounterpartyCommand()
+            {
+                Model = dto
+            });
+
+            return !response.IsError ? Ok(response.Value) : StatusCode(response.ErrorCode!.Value, response.ErrorText);
+        }
+
+        [HttpPut("{uuid:guid}")]
+        public async Task<IActionResult> UpdateRecord([FromRoute] Guid uuid, [FromBody] CounterpartyViewDto dto)
+        {
+            var response = await mediator.Send(new UpdateCounterpartyCommand()
+            {
+                Id=uuid,
+                Model = dto
+            });
+
+            return !response.IsError ? Ok(response.Value) : StatusCode(response.ErrorCode!.Value, response.ErrorText);
+        }
+
+        [HttpDelete("{uuid:guid}")]
+        public async Task<IActionResult> DeleteRecord([FromRoute] Guid uuid)
+        {
+            var response = await mediator.Send(new DeleteCounterpartyCommand()
+            {
+                Id = uuid,
+            });
+
+            return !response.IsError ? Ok() : StatusCode(response.ErrorCode!.Value, response.ErrorText);
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/DSaC.csproj
+++ b/kuzarin_maxim_lab_3/DSaC/DSaC.csproj
@@ -0,0 +1,26 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <UserSecretsId>55894bef-8317-4e30-a5f0-4dcd5c3f861e</UserSecretsId>
+    <DockerDefaultTargetOS>Linux</DockerDefaultTargetOS>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="MediatR" Version="12.4.0" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="8.0.8" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.8" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="8.0.8">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.20.1" />
+    <PackageReference Include="NLog.Extensions.Logging" Version="5.3.12" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="8.0.4" />
+    <PackageReference Include="PIHelperSh.Configuration" Version="1.0.1" />
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="6.4.0" />
+  </ItemGroup>
+
+</Project>
--- a/kuzarin_maxim_lab_3/DSaC/Database/DsacContext.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Database/DsacContext.cs
@@ -0,0 +1,14 @@
+using DSaC.Database.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace DSaC.Database
+{
+    public class DsacContext: DbContext
+    {
+        public DsacContext(DbContextOptions options) : base(options)
+        {
+        }
+
+        public DbSet<Counterparty> Counterparties { get; set; }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Database/Models/Counterparty.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Database/Models/Counterparty.cs
@@ -0,0 +1,24 @@
+using AutoMapper;
+using DSaC.Models.DTOs;
+using DSaC.Models.Internal.Сommands;
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace DSaC.Database.Models
+{
+    [Table("counterparty")]
+    [AutoMap(typeof(CounterpartyBaseDto))]
+    [AutoMap(typeof(CounterpartyViewDto))]
+    public class Counterparty
+    {
+        [Key]
+        [Column("id")]
+        public Guid Id { get; set; }
+
+        [Required]
+        [MaxLength(255)]
+        [Column("name")]
+        public string Name { get; set; }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Dockerfile
+++ b/kuzarin_maxim_lab_3/DSaC/Dockerfile
@@ -0,0 +1,24 @@
+#See https://aka.ms/customizecontainer to learn how to customize your debug container and how Visual Studio uses this Dockerfile to build your images for faster debugging.
+
+FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS base
+WORKDIR /app
+EXPOSE 8080
+EXPOSE 8081
+
+FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
+ARG BUILD_CONFIGURATION=Release
+WORKDIR /src
+COPY ["DSaC.csproj", "DSaC/"]
+RUN dotnet restore "DSaC/DSaC.csproj"
+WORKDIR "/src/DSaC"
+COPY . .
+RUN dotnet build "DSaC.csproj" -c $BUILD_CONFIGURATION -o /app/build
+
+FROM build AS publish
+ARG BUILD_CONFIGURATION=Release
+RUN dotnet publish "DSaC.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false
+
+FROM base AS final
+WORKDIR /app
+COPY --from=publish /app/publish .
+ENTRYPOINT ["dotnet", "DSaC.dll"]
--- a/kuzarin_maxim_lab_3/DSaC/Logic/Handlers/Commands/CreateCounterpartyCommandHandler.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Logic/Handlers/Commands/CreateCounterpartyCommandHandler.cs
@@ -0,0 +1,51 @@
+using AutoMapper;
+using DSaC.Database;
+using DSaC.Database.Models;
+using DSaC.Logic.Handlers.Queries;
+using DSaC.Models.DTOs;
+using DSaC.Models.Internal;
+using DSaC.Models.Internal.Сommands;
+using MediatR;
+
+namespace DSaC.Logic.Handlers.Commands
+{
+    public class CreateCounterpartyCommandHandler : IRequestHandler<CreateCounterpartyCommand, ResponseModel<CounterpartyViewDto>>
+    {
+        private readonly ILogger _logger;
+        private readonly DsacContext _context;
+        private readonly IMapper _mapper;   
+
+        public CreateCounterpartyCommandHandler(ILogger<CreateCounterpartyCommandHandler> logger, DsacContext context, IMapper mapper)
+        {
+            _logger = logger;
+            _context = context;
+            _mapper = mapper;
+        }
+
+        public async Task<ResponseModel<CounterpartyViewDto>> Handle(CreateCounterpartyCommand request, CancellationToken cancellationToken)
+        {
+            try
+            {
+                var model = _mapper.Map<Counterparty>(request.Model);
+
+                var res = await _context.AddAsync(model);
+
+                await _context.SaveChangesAsync();
+
+                return new()
+                {
+                    Value = _mapper.Map<CounterpartyViewDto>(res.Entity)
+                };
+            }
+            catch (Exception ex) 
+            {
+                _logger.LogError(ex, "Error on creating counterparty");
+                return new()
+                {
+                    StatusCode = System.Net.HttpStatusCode.NotFound,
+                    ErrorText = "Cannot create counterparty"
+                };
+            }
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Logic/Handlers/Commands/DeleteCounterpartyCommandHandler.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Logic/Handlers/Commands/DeleteCounterpartyCommandHandler.cs
@@ -0,0 +1,50 @@
+using AutoMapper;
+using DSaC.Database;
+using DSaC.Database.Models;
+using DSaC.Models.DTOs;
+using DSaC.Models.Internal;
+using DSaC.Models.Internal.Сommands;
+using MediatR;
+using Microsoft.EntityFrameworkCore;
+
+namespace DSaC.Logic.Handlers.Commands
+{
+    public class DeleteCounterpartyCommandHandler: IRequestHandler<DeleteCounterpartyCommand, ResponseModel>
+    {
+        private readonly ILogger _logger;
+        private readonly DsacContext _context;
+        private readonly IMapper _mapper;
+
+        public DeleteCounterpartyCommandHandler(ILogger<DeleteCounterpartyCommandHandler> logger, DsacContext context, IMapper mapper)
+        {
+            _logger = logger;
+            _context = context;
+            _mapper = mapper;
+        }
+
+        public async Task<ResponseModel> Handle(DeleteCounterpartyCommand request, CancellationToken cancellationToken)
+        {
+            try
+            {
+                var res  = await _context.Counterparties.Where(x=>x.Id == request.Id).ExecuteDeleteAsync();
+
+                if (res == 1)return new();
+
+                return new()
+                {
+                    ErrorText = "Cannot find object to delete",
+                    StatusCode = System.Net.HttpStatusCode.NotFound
+                };
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error on deleteing counterparty");
+                return new()
+                {
+                    StatusCode = System.Net.HttpStatusCode.NotFound,
+                    ErrorText = "Cannot delete counterparty"
+                };
+            }
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Logic/Handlers/Commands/UpdateCounterpartyCommandHandler.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Logic/Handlers/Commands/UpdateCounterpartyCommandHandler.cs
@@ -0,0 +1,50 @@
+using AutoMapper;
+using DSaC.Database;
+using DSaC.Database.Models;
+using DSaC.Models.DTOs;
+using DSaC.Models.Internal;
+using DSaC.Models.Internal.Сommands;
+using MediatR;
+
+namespace DSaC.Logic.Handlers.Commands
+{
+    public class UpdateCounterpartyCommandHandler: IRequestHandler<UpdateCounterpartyCommand, ResponseModel<CounterpartyViewDto>>
+    {
+        private readonly ILogger _logger;
+        private readonly DsacContext _context;
+        private readonly IMapper _mapper;
+
+        public UpdateCounterpartyCommandHandler(ILogger<UpdateCounterpartyCommandHandler> logger, DsacContext context, IMapper mapper)
+        {
+            _logger = logger;
+            _context = context;
+            _mapper = mapper;
+        }
+
+        public async Task<ResponseModel<CounterpartyViewDto>> Handle(UpdateCounterpartyCommand request, CancellationToken cancellationToken)
+        {
+            try
+            {
+                var model = _mapper.Map<Counterparty>(request.Model);
+
+                var res = _context.Update(model);
+
+                await _context.SaveChangesAsync();
+
+                return new()
+                {
+                    Value = _mapper.Map<CounterpartyViewDto>(res.Entity)
+                };
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error on updating counterparty");
+                return new()
+                {
+                    StatusCode = System.Net.HttpStatusCode.NotFound,
+                    ErrorText = "Cannot update counterparty"
+                };
+            }
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Logic/Handlers/Queries/GetCounterpartiesQueryHandler.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Logic/Handlers/Queries/GetCounterpartiesQueryHandler.cs
@@ -0,0 +1,50 @@
+using AutoMapper;
+using DSaC.Database;
+using DSaC.Models.DTOs;
+using DSaC.Models.Internal;
+using DSaC.Models.Internal.Queries;
+using MediatR;
+using Microsoft.EntityFrameworkCore;
+
+namespace DSaC.Logic.Handlers.Queries
+{
+    public class GetCounterpartiesQueryHandler : IRequestHandler<GetCounterpartiesQuery, ResponseModel<List<CounterpartyViewDto>>>
+    {
+        private readonly ILogger _logger;
+        private readonly DsacContext _context;
+        private readonly IMapper _mapper;
+
+        public GetCounterpartiesQueryHandler(ILogger<GetCounterpartiesQueryHandler> logger, DsacContext context, IMapper mapper)
+        {
+            _logger = logger;
+            _context = context;
+            _mapper = mapper;
+        }
+
+        public async Task<ResponseModel<List<CounterpartyViewDto>>> Handle(GetCounterpartiesQuery request, CancellationToken cancellationToken)
+        {
+            try
+            {
+                var res = await _context.Counterparties
+                        .Where(x=>request.Ids == null || request.Ids.Contains(x.Id))
+                        .Skip(request.Page * request.PageSize).Take(request.PageSize)
+                        .ToListAsync();
+
+                return new()
+                {
+                    Value = res.Select(_mapper.Map<CounterpartyViewDto>).ToList(),
+                };
+            }
+            catch (Exception ex) 
+            {
+                _logger.LogError(ex, "Error on getting records");
+
+                return new()
+                {
+                    StatusCode = System.Net.HttpStatusCode.BadRequest,
+                    ErrorText = "Cannot get Counterparties by this request",
+                };
+            }
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Logic/Handlers/Queries/GetCounterpartyQueryHandler.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Logic/Handlers/Queries/GetCounterpartyQueryHandler.cs
@@ -0,0 +1,54 @@
+using AutoMapper;
+using DSaC.Database;
+using DSaC.Models.DTOs;
+using DSaC.Models.Internal;
+using DSaC.Models.Internal.Queries;
+using MediatR;
+using Microsoft.EntityFrameworkCore;
+
+namespace DSaC.Logic.Handlers.Queries
+{
+    public class GetCounterpartyQueryHandler: IRequestHandler<GetCounterpartyQuery, ResponseModel<CounterpartyViewDto>>
+    {
+        private readonly ILogger _logger;
+        private readonly DsacContext _context;
+        private readonly IMapper _mapper;
+
+        public GetCounterpartyQueryHandler(ILogger<GetCounterpartyQueryHandler> logger, DsacContext context, IMapper mapper)
+        {
+            _logger = logger;
+            _context = context;
+            _mapper = mapper;
+        }
+
+        public async Task<ResponseModel<CounterpartyViewDto>> Handle(GetCounterpartyQuery request, CancellationToken cancellationToken)
+        {
+            try
+            {
+                var res = await _context.Counterparties.FirstOrDefaultAsync(x=>x.Id == request.Id);
+
+                if (res == null)
+                    return new()
+                    {
+                        StatusCode = System.Net.HttpStatusCode.NotFound,
+                        ErrorText = "Counterparty with this ID does not exsist",
+                    };
+
+                return new()
+                {
+                    Value = _mapper.Map<CounterpartyViewDto>(res),
+                };
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error on getting record");
+
+                return new()
+                {
+                    StatusCode = System.Net.HttpStatusCode.NotFound,
+                    ErrorText = "Cannot get Counterparty by id",
+                };
+            }
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Migrations/20240907133944_InitMigraton.Designer.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Migrations/20240907133944_InitMigraton.Designer.cs
@@ -0,0 +1,60 @@
+// <auto-generated />
+using System;
+using DSaC.Database;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace DSaC.Migrations
+{
+    [DbContext(typeof(DsacContext))]
+    [Migration("20240907133944_InitMigraton")]
+    partial class InitMigraton
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.8")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("DSaC.Database.Models.Counterparty", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid")
+                        .HasColumnName("id");
+
+                    b.Property<string>("ContractNumber")
+                        .IsRequired()
+                        .HasMaxLength(50)
+                        .HasColumnType("character varying(50)")
+                        .HasColumnName("contract_number");
+
+                    b.Property<string>("ManagerName")
+                        .IsRequired()
+                        .HasMaxLength(255)
+                        .HasColumnType("character varying(255)")
+                        .HasColumnName("manager_name");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(255)
+                        .HasColumnType("character varying(255)")
+                        .HasColumnName("name");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("counterparty");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Migrations/20240907133944_InitMigraton.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Migrations/20240907133944_InitMigraton.cs
@@ -0,0 +1,36 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace DSaC.Migrations
+{
+    /// <inheritdoc />
+    public partial class InitMigraton : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "counterparty",
+                columns: table => new
+                {
+                    id = table.Column<Guid>(type: "uuid", nullable: false),
+                    name = table.Column<string>(type: "character varying(255)", maxLength: 255, nullable: false),
+                    contract_number = table.Column<string>(type: "character varying(50)", maxLength: 50, nullable: false),
+                    manager_name = table.Column<string>(type: "character varying(255)", maxLength: 255, nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_counterparty", x => x.id);
+                });
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "counterparty");
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Migrations/20240907140843_ChangingContractInfo.Designer.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Migrations/20240907140843_ChangingContractInfo.Designer.cs
@@ -0,0 +1,64 @@
+// <auto-generated />
+using System;
+using DSaC.Database;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace DSaC.Migrations
+{
+    [DbContext(typeof(DsacContext))]
+    [Migration("20240907140843_ChangingContractInfo")]
+    partial class ChangingContractInfo
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.8")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("DSaC.Database.Models.Counterparty", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid")
+                        .HasColumnName("id");
+
+                    b.Property<string>("ContractNumber")
+                        .IsRequired()
+                        .HasMaxLength(50)
+                        .HasColumnType("character varying(50)")
+                        .HasColumnName("contract_number");
+
+                    b.Property<bool>("IsContractClosed")
+                        .HasColumnType("boolean")
+                        .HasColumnName("is_contract_closed");
+
+                    b.Property<string>("ManagerName")
+                        .IsRequired()
+                        .HasMaxLength(255)
+                        .HasColumnType("character varying(255)")
+                        .HasColumnName("manager_name");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(255)
+                        .HasColumnType("character varying(255)")
+                        .HasColumnName("name");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("counterparty");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Migrations/20240907140843_ChangingContractInfo.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Migrations/20240907140843_ChangingContractInfo.cs
@@ -0,0 +1,29 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace DSaC.Migrations
+{
+    /// <inheritdoc />
+    public partial class ChangingContractInfo : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<bool>(
+                name: "is_contract_closed",
+                table: "counterparty",
+                type: "boolean",
+                nullable: false,
+                defaultValue: false);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "is_contract_closed",
+                table: "counterparty");
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Migrations/20240907141343_SmallHotfix.Designer.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Migrations/20240907141343_SmallHotfix.Designer.cs
@@ -0,0 +1,63 @@
+// <auto-generated />
+using System;
+using DSaC.Database;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace DSaC.Migrations
+{
+    [DbContext(typeof(DsacContext))]
+    [Migration("20240907141343_SmallHotfix")]
+    partial class SmallHotfix
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.8")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("DSaC.Database.Models.Counterparty", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid")
+                        .HasColumnName("id");
+
+                    b.Property<string>("ContractNumber")
+                        .IsRequired()
+                        .HasMaxLength(50)
+                        .HasColumnType("character varying(50)")
+                        .HasColumnName("contract_number");
+
+                    b.Property<bool>("IsContractClosed")
+                        .HasColumnType("boolean")
+                        .HasColumnName("is_contract_closed");
+
+                    b.Property<string>("ManagerName")
+                        .HasMaxLength(255)
+                        .HasColumnType("character varying(255)")
+                        .HasColumnName("manager_name");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(255)
+                        .HasColumnType("character varying(255)")
+                        .HasColumnName("name");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("counterparty");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Migrations/20240907141343_SmallHotfix.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Migrations/20240907141343_SmallHotfix.cs
@@ -0,0 +1,40 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace DSaC.Migrations
+{
+    /// <inheritdoc />
+    public partial class SmallHotfix : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AlterColumn<string>(
+                name: "manager_name",
+                table: "counterparty",
+                type: "character varying(255)",
+                maxLength: 255,
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "character varying(255)",
+                oldMaxLength: 255);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AlterColumn<string>(
+                name: "manager_name",
+                table: "counterparty",
+                type: "character varying(255)",
+                maxLength: 255,
+                nullable: false,
+                defaultValue: "",
+                oldClrType: typeof(string),
+                oldType: "character varying(255)",
+                oldMaxLength: 255,
+                oldNullable: true);
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Migrations/20240914065929_after-reconstruction.Designer.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Migrations/20240914065929_after-reconstruction.Designer.cs
@@ -0,0 +1,48 @@
+// <auto-generated />
+using System;
+using DSaC.Database;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace DSaC.Migrations
+{
+    [DbContext(typeof(DsacContext))]
+    [Migration("20240914065929_after-reconstruction")]
+    partial class afterreconstruction
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.8")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("DSaC.Database.Models.Counterparty", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid")
+                        .HasColumnName("id");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(255)
+                        .HasColumnType("character varying(255)")
+                        .HasColumnName("name");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("counterparty");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Migrations/20240914065929_after-reconstruction.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Migrations/20240914065929_after-reconstruction.cs
@@ -0,0 +1,52 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace DSaC.Migrations
+{
+    /// <inheritdoc />
+    public partial class afterreconstruction : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "contract_number",
+                table: "counterparty");
+
+            migrationBuilder.DropColumn(
+                name: "is_contract_closed",
+                table: "counterparty");
+
+            migrationBuilder.DropColumn(
+                name: "manager_name",
+                table: "counterparty");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "contract_number",
+                table: "counterparty",
+                type: "character varying(50)",
+                maxLength: 50,
+                nullable: false,
+                defaultValue: "");
+
+            migrationBuilder.AddColumn<bool>(
+                name: "is_contract_closed",
+                table: "counterparty",
+                type: "boolean",
+                nullable: false,
+                defaultValue: false);
+
+            migrationBuilder.AddColumn<string>(
+                name: "manager_name",
+                table: "counterparty",
+                type: "character varying(255)",
+                maxLength: 255,
+                nullable: true);
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Migrations/DsacContextModelSnapshot.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Migrations/DsacContextModelSnapshot.cs
@@ -0,0 +1,45 @@
+// <auto-generated />
+using System;
+using DSaC.Database;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace DSaC.Migrations
+{
+    [DbContext(typeof(DsacContext))]
+    partial class DsacContextModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.8")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("DSaC.Database.Models.Counterparty", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid")
+                        .HasColumnName("id");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(255)
+                        .HasColumnType("character varying(255)")
+                        .HasColumnName("name");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("counterparty");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Models/DTOs/ContractViewDto.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Models/DTOs/ContractViewDto.cs
@@ -0,0 +1,17 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace DSaC.Models.DTOs
+{
+    public class ContractViewDto
+    {
+        [Required(ErrorMessage = "Contract number must be present")]
+        public string ContractNumber { get; set; } = null!;
+
+        [Required(ErrorMessage = "Manager name must be present")]
+        public string ManagerName { get; set; } = null!;
+
+        public DateTime CreatinTime { get; set; }
+
+        public bool IsClosed { get; set; }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Models/DTOs/CounterpartyBaseDto.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Models/DTOs/CounterpartyBaseDto.cs
@@ -0,0 +1,13 @@
+
+using AutoMapper;
+using DSaC.Database.Models;
+using System.ComponentModel.DataAnnotations;
+
+namespace DSaC.Models.DTOs
+{
+    public class CounterpartyBaseDto
+    {
+        [Required(ErrorMessage = "Cpty name must be present")]
+        public string Name { get; set; } = null!;
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Models/DTOs/CounterpartyViewDto.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Models/DTOs/CounterpartyViewDto.cs
@@ -0,0 +1,11 @@
+using AutoMapper;
+using DSaC.Database.Models;
+
+namespace DSaC.Models.DTOs
+{
+    [AutoMap(typeof(Counterparty))]
+    public class CounterpartyViewDto: CounterpartyBaseDto
+    {
+        public Guid Id { get; set; }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Models/Internal/Queries/GetCounterpartiesQuery.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Models/Internal/Queries/GetCounterpartiesQuery.cs
@@ -0,0 +1,14 @@
+using DSaC.Models.DTOs;
+using MediatR;
+
+namespace DSaC.Models.Internal.Queries
+{
+    public class GetCounterpartiesQuery: IRequest<ResponseModel<List<CounterpartyViewDto>>>
+    {
+        public List<Guid>? Ids { get; set; }
+
+        public int Page {  get; set; }
+
+        public int PageSize { get; set; }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Models/Internal/Queries/GetCounterpartyQuery.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Models/Internal/Queries/GetCounterpartyQuery.cs
@@ -0,0 +1,10 @@
+using DSaC.Models.DTOs;
+using MediatR;
+
+namespace DSaC.Models.Internal.Queries
+{
+    public class GetCounterpartyQuery: IRequest<ResponseModel<CounterpartyViewDto>>
+    {
+        public Guid Id { get; set; }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Models/Internal/ResponseModel.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Models/Internal/ResponseModel.cs
@@ -0,0 +1,30 @@
+using System.Net;
+
+namespace DSaC.Models.Internal
+{
+    public class ResponseModel
+    {
+        public string? ErrorText;
+
+        public bool IsError => !string.IsNullOrEmpty(ErrorText);
+
+        private int? _errorCode = 200;
+
+        public int? ErrorCode
+        {
+            get => _errorCode; 
+            set => _errorCode = value;
+        }
+
+        public HttpStatusCode? StatusCode
+        {
+            get => (HttpStatusCode?)_errorCode;
+            set => _errorCode = (int?)value;
+        }
+    }
+
+    public class ResponseModel<T> : ResponseModel 
+    {
+        public T? Value { get; set; }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Models/Internal/Сommands/CreateCounterpartyCommand.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Models/Internal/Сommands/CreateCounterpartyCommand.cs
@@ -0,0 +1,10 @@
+using DSaC.Models.DTOs;
+using MediatR;
+
+namespace DSaC.Models.Internal.Сommands
+{
+    public class CreateCounterpartyCommand : IRequest<ResponseModel<CounterpartyViewDto>>
+    {
+        public CounterpartyBaseDto Model { get; set; } = null!;
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Models/Internal/Сommands/DeleteCounterpartyCommand.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Models/Internal/Сommands/DeleteCounterpartyCommand.cs
@@ -0,0 +1,9 @@
+using MediatR;
+
+namespace DSaC.Models.Internal.Сommands
+{
+    public class DeleteCounterpartyCommand: IRequest<ResponseModel>
+    {
+        public Guid Id { get; set; }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Models/Internal/Сommands/UpdateCounterpartyCommand.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Models/Internal/Сommands/UpdateCounterpartyCommand.cs
@@ -0,0 +1,14 @@
+using DSaC.Models.DTOs;
+using MediatR;
+using System.ComponentModel.DataAnnotations;
+
+namespace DSaC.Models.Internal.Сommands
+{
+    public class UpdateCounterpartyCommand: IRequest<ResponseModel<CounterpartyViewDto>>
+    {
+        public Guid Id { get; set; }
+
+        [Required(ErrorMessage = "UpdateMessageMust be present")]
+        public CounterpartyViewDto Model { get; set; } = null!;
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Program.cs
+++ b/kuzarin_maxim_lab_3/DSaC/Program.cs
@@ -0,0 +1,128 @@
+using DSaC.Database;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.OpenApi.Models;
+using NLog.Config;
+using NLog.Extensions.Logging;
+using NLog.Targets;
+using PIHelperSh.Configuration;
+using PIHelperSh.Configuration.Attributes;
+using System.Reflection;
+using LogLevel = NLog.LogLevel;
+
+[TrackedType]
+public class Program
+{
+    private static WebApplication? app;
+
+    [Constant(BlockName = "Database")]
+    private static string ConnectionString;
+
+    [Constant(BlockName = "GatewaySettings")]
+    private static string AppPrefix;
+    public static void Main(string[] args)
+    {
+        var builder = WebApplication.CreateBuilder(args);
+
+        ConfigureLogger(builder);
+
+        ConfigureServices(builder);
+
+        ConfigureDatabase(builder);
+
+        app = builder.Build();
+
+        var t = MigrateDatabase();
+
+        app.UseSwagger(c =>
+        {
+            if (!string.IsNullOrEmpty(AppPrefix))
+            {
+                //c.RouteTemplate = AppPrefix + "/swagger/{documentName}/swagger.json";
+
+                c.PreSerializeFilters.Add((swaggerDoc, httpReq) =>
+                {
+                    swaggerDoc.Servers = new List<OpenApiServer> { new OpenApiServer { Url = $"{httpReq.Scheme}://{httpReq.Host.Value}/{AppPrefix}" } };
+                });
+            }
+        });
+        app.UseSwaggerUI(c =>
+        {
+            //if (!string.IsNullOrEmpty(AppPrefix))
+            //{
+            //    c.SwaggerEndpoint($"/{AppPrefix}/swagger/v1/swagger.json", $"APP API");
+            //    c.RoutePrefix = $"{AppPrefix}/swagger";
+            //}
+        });
+
+        app.UseHttpsRedirection();
+
+        app.UseAuthorization();
+
+        app.MapControllers();
+
+        t.Wait();
+
+        app.Run();
+    }
+
+    private static void ConfigureLogger(WebApplicationBuilder builder)
+    {
+        var nLogConfig = new LoggingConfiguration();
+        var logConsole = new ConsoleTarget();
+        var blackhole = new NullTarget();
+
+        var logFile = new FileTarget()
+        {
+            FileName = "${basedir}/logs/${shortdate}_logs.log"
+        };
+
+        nLogConfig.AddRule(LogLevel.Trace, LogLevel.Trace, blackhole, "Microsoft.AspNetCore.*", true);
+        nLogConfig.AddRule(LogLevel.Info, LogLevel.Warn, logFile, "Microsoft.EntityFrameworkCore.*", true);
+        nLogConfig.AddRule(LogLevel.Info, LogLevel.Warn, logFile, "Microsoft.AspNetCore.*", true);
+        nLogConfig.AddRule(LogLevel.Info, LogLevel.Warn, logFile, "System.Net.Http.HttpClient.Refit.*", true);
+        nLogConfig.AddRule(LogLevel.Info, LogLevel.Error, logConsole);
+        nLogConfig.AddRule(LogLevel.Debug, LogLevel.Error, logFile);
+
+        builder.Logging.ClearProviders();
+        builder.Services.AddLogging(m => m.AddNLog(nLogConfig));
+    }
+
+    private static void ConfigureServices(WebApplicationBuilder builder)
+    {
+        builder.Services.AddConfigurations(builder.Configuration);
+        builder.Configuration.AddConstants();
+        builder.Services.AddAutoMapper(AppDomain.CurrentDomain.GetAssemblies());
+
+        builder.Services.AddMediatR(cfg => cfg.RegisterServicesFromAssemblyContaining<Program>());
+
+        builder.Services.AddControllers().AddNewtonsoftJson();
+
+        builder.Services.AddEndpointsApiExplorer();
+        builder.Services.AddSwaggerGen(c =>
+        {
+            c.SwaggerDoc("v1", new OpenApiInfo
+            {
+                Title = "Distributed computing and applications",
+                Version = "v1",
+                Description = ""
+            });
+
+            //c.EnableAnnotations();
+        });
+    }
+
+    private static void ConfigureDatabase(WebApplicationBuilder builder) 
+    {
+        builder.Services.AddDbContext<DsacContext>(options =>
+        {
+            options.UseNpgsql(ConnectionString);
+        });
+    }
+
+    private static async Task MigrateDatabase()
+    {
+        var context = app?.Services.CreateScope().ServiceProvider.GetService<DsacContext>();
+        if(context != null)
+            await context.Database.MigrateAsync();
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC/Properties/launchSettings.json
+++ b/kuzarin_maxim_lab_3/DSaC/Properties/launchSettings.json
@@ -0,0 +1,52 @@
+{
+  "profiles": {
+    "http": {
+      "commandName": "Project",
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      },
+      "dotnetRunMessages": true,
+      "applicationUrl": "http://localhost:5062"
+    },
+    "https": {
+      "commandName": "Project",
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      },
+      "dotnetRunMessages": true,
+      "applicationUrl": "https://localhost:7219;http://localhost:5062"
+    },
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "Container (Dockerfile)": {
+      "commandName": "Docker",
+      "launchBrowser": true,
+      "launchUrl": "{Scheme}://{ServiceHost}:{ServicePort}/swagger",
+      "environmentVariables": {
+        "ASPNETCORE_HTTPS_PORTS": "8081",
+        "ASPNETCORE_HTTP_PORTS": "8080"
+      },
+      "publishAllPorts": true,
+      "useSSL": true
+    }
+  },
+  "$schema": "http://json.schemastore.org/launchsettings.json",
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:9154",
+      "sslPort": 44381
+    }
+  }
+}
--- a/kuzarin_maxim_lab_3/DSaC/appsettings.Development.json
+++ b/kuzarin_maxim_lab_3/DSaC/appsettings.Development.json
@@ -0,0 +1,14 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "Database": {
+    "ConnectionString": "Host=db.dev-moio.online;Port=31153;Database=dsac_maxim;Username=postgres;Password=postgres_password"
+  },
+  "GatewaySettings": {
+    "AppPrefix": ""
+  }
+}
--- a/kuzarin_maxim_lab_3/DSaC/appsettings.json
+++ b/kuzarin_maxim_lab_3/DSaC/appsettings.json
@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Controllers/ContractController.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Controllers/ContractController.cs
@@ -0,0 +1,88 @@
+using DSaC_second.Models.DTOs;
+using DSaC_second.Models.Internal.Queries;
+using DSaC_second.Models.Internal.Сommands;
+using MediatR;
+using Microsoft.AspNetCore.Components.Forms;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+
+namespace DSaC_second.Controllers
+{
+    [Route("api/[controller]")]
+    [ApiController]
+    public class ContractController : ControllerBase
+    {
+        private readonly IMediator _mediator;
+
+        public ContractController(IMediator mediator)
+        {
+            _mediator = mediator;
+        }
+
+        [HttpGet("")]
+        public async Task<IActionResult> GetContracts(
+        [FromQuery] int page = 0,
+        [FromQuery] int pageSize = 10,
+        [FromQuery] List<Guid>? ids = null
+        )
+        {
+            var request = new GetContractsQuery
+            {
+                Page = page,
+                PageSize = pageSize,
+                Ids = ids
+            };
+
+            var response = await _mediator.Send(request);
+
+            return !response.IsError ? Ok(response.Value) : StatusCode(response.ErrorCode!.Value, response.ErrorText);
+        }
+
+        [HttpGet("{uuid:guid}")]
+        public async Task<IActionResult> GetFullContract([FromRoute] Guid uuid)
+        {
+            var request = new GetContractQuery
+            {
+                Id = uuid
+            };
+
+            var response = await _mediator.Send(request);
+
+            return !response.IsError ? Ok(response.Value) : StatusCode(response.ErrorCode!.Value, response.ErrorText);
+        }
+
+        [HttpPost("")]
+        public async Task<IActionResult> CreateContract([FromBody] ContractBaseDto dto)
+        {
+            var response = await _mediator.Send(new CreateContractCommand()
+            {
+                Model = dto
+            });
+
+            return !response.IsError ? Ok(response.Value) : StatusCode(response.ErrorCode!.Value, response.ErrorText);
+        }
+
+        [HttpPut("{uuid:guid}")]
+        public async Task<IActionResult> UpdateContract([FromRoute] Guid uuid, [FromBody] ContractViewDto dto)
+        {
+            var response = await _mediator.Send(new UpdateContractCommand()
+            {
+                Id = uuid,
+                Model = dto
+            });
+
+            return !response.IsError ? Ok(response.Value) : StatusCode(response.ErrorCode!.Value, response.ErrorText);
+        }
+
+        [HttpDelete("{uuid:guid}")]
+        public async Task<IActionResult> DeleteContract([FromRoute] Guid uuid)
+        {
+            var response = await _mediator.Send(new DeleteContractCommand()
+            {
+                Id = uuid,
+            });
+
+            return !response.IsError ? Ok() : StatusCode(response.ErrorCode!.Value, response.ErrorText);
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/DSaC_second.csproj
+++ b/kuzarin_maxim_lab_3/DSaC_second/DSaC_second.csproj
@@ -0,0 +1,27 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <UserSecretsId>39d29416-63e9-4884-9c5f-9d6ff461995f</UserSecretsId>
+    <DockerDefaultTargetOS>Linux</DockerDefaultTargetOS>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="MediatR" Version="12.4.1" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="8.0.8" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.8" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="8.0.8">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.20.1" />
+    <PackageReference Include="NLog.Extensions.Logging" Version="5.3.13" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="8.0.4" />
+    <PackageReference Include="PIHelperSh.Configuration" Version="1.0.1" />
+    <PackageReference Include="RestSharp" Version="112.0.0" />
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="6.4.0" />
+  </ItemGroup>
+
+</Project>
--- a/kuzarin_maxim_lab_3/DSaC_second/Database/DsacContext.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Database/DsacContext.cs
@@ -0,0 +1,15 @@
+using DSaC_second.Database.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace DSaC_second.Database
+{
+    public class DsacContext : DbContext
+    {
+        public DsacContext(DbContextOptions options) : base(options)
+        {
+            AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);
+        }
+
+        public DbSet<Contract> Contracts { get; set; }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Database/Models/Contract.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Database/Models/Contract.cs
@@ -0,0 +1,38 @@
+using AutoMapper;
+using DSaC_second.Models.DTOs;
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace DSaC_second.Database.Models
+{
+    [Table("contract")]
+    [AutoMap(typeof(ContractBaseDto))]
+    [AutoMap(typeof(ContractViewDto))]
+    public class Contract
+    {
+        [Key]
+        [Column("id")]
+        public Guid Id { get; set; }
+
+        [Column("contract_number")]
+        [Required]
+        public string ContractNumber { get; set; }
+
+        [Column("manager_name")]
+        [Required]
+        public string ManagerName { get; set; }
+
+        [Column("counterparty_id")]
+        [Required]
+        public Guid CounterpartyId { get; set; }
+
+        [Column("creation_time")]
+        [Required]
+        public DateTime CreatinTime { get; set; } = DateTime.Now;
+
+        [Column("is_closed")]
+        [DefaultValue(false)]
+        public bool IsClosed { get; set; }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Dockerfile
+++ b/kuzarin_maxim_lab_3/DSaC_second/Dockerfile
@@ -0,0 +1,24 @@
+#See https://aka.ms/customizecontainer to learn how to customize your debug container and how Visual Studio uses this Dockerfile to build your images for faster debugging.
+
+FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS base
+WORKDIR /app
+EXPOSE 8080
+EXPOSE 8081
+
+FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
+ARG BUILD_CONFIGURATION=Release
+WORKDIR /src
+COPY ["DSaC_second.csproj", "DSaC_second/"]
+RUN dotnet restore "DSaC_second/DSaC_second.csproj"
+WORKDIR "/src/DSaC_second"
+COPY . .
+RUN dotnet build "DSaC_second.csproj" -c $BUILD_CONFIGURATION -o /app/build
+
+FROM build AS publish
+ARG BUILD_CONFIGURATION=Release
+RUN dotnet publish "DSaC_second.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false
+
+FROM base AS final
+WORKDIR /app
+COPY --from=publish /app/publish .
+ENTRYPOINT ["dotnet", "DSaC_second.dll"]
--- a/kuzarin_maxim_lab_3/DSaC_second/Logic/Handlers/Commands/CreateContractCommandHandler.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Logic/Handlers/Commands/CreateContractCommandHandler.cs
@@ -0,0 +1,76 @@
+using AutoMapper;
+using DSaC_second.Database;
+using DSaC_second.Database.Models;
+using DSaC_second.Logic.Handlers.Queries;
+using DSaC_second.Models.DTOs;
+using DSaC_second.Models.Internal;
+using DSaC_second.Models.Internal.Queries;
+using DSaC_second.Models.Internal.Сommands;
+using MediatR;
+
+namespace DSaC_second.Logic.Handlers.Commands
+{
+    public class CreateContractCommandHandler : IRequestHandler<CreateContractCommand, ResponseModel<ContractFullDto>>
+    {
+        private readonly ILogger _logger;
+        private readonly DsacContext _context;
+        private readonly IMapper _mapper;
+        private readonly IMediator _mediator;
+
+        public CreateContractCommandHandler(ILogger<CreateContractCommandHandler> logger, DsacContext context, IMapper mapper, IMediator mediator)
+        {
+            _logger = logger;
+            _context = context;
+            _mapper = mapper;
+            _mediator = mediator;
+        }
+
+        public async Task<ResponseModel<ContractFullDto>> Handle(CreateContractCommand request, CancellationToken cancellationToken)
+        {
+            try
+            {
+                var counterparty = await _mediator.Send(new GetConunterpartyQuery()
+                {
+                    Id = request.Model.CounterpartyId,
+                }, cancellationToken: cancellationToken);
+
+                if (counterparty.IsError)
+                    return new()
+                    {
+                        StatusCode = System.Net.HttpStatusCode.NotFound,
+                        ErrorText = counterparty.ErrorText,
+                    };
+                if (counterparty.Value == null)
+                    return new()
+                    {
+                        StatusCode = System.Net.HttpStatusCode.NotFound,
+                        ErrorText = "Cpty with this id not found",
+                    };
+
+                var model = _mapper.Map<Contract>(request.Model);
+
+                var outModel = await _context.Contracts.AddAsync(model, cancellationToken: cancellationToken);
+
+                await _context.SaveChangesAsync(cancellationToken);
+
+                var res = _mapper.Map<ContractFullDto>(model);
+                res.Counterparty = counterparty.Value!;
+
+                return new()
+                {
+                    Value = res,
+                };
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error on creating record");
+
+                return new()
+                {
+                    StatusCode = System.Net.HttpStatusCode.NotFound,
+                    ErrorText = "Cannot create contract",
+                };
+            }
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Logic/Handlers/Commands/DeleteContractCommandHandler.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Logic/Handlers/Commands/DeleteContractCommandHandler.cs
@@ -0,0 +1,43 @@
+using AutoMapper;
+using DSaC_second.Database;
+using DSaC_second.Models.Internal;
+using DSaC_second.Models.Internal.Сommands;
+using MediatR;
+using Microsoft.EntityFrameworkCore;
+
+namespace DSaC_second.Logic.Handlers.Commands
+{
+    public class DeleteContractCommandHandler: IRequestHandler<DeleteContractCommand, ResponseModel>
+    {
+        private readonly ILogger _logger;
+        private readonly DsacContext _context;
+        private readonly IMapper _mapper;
+
+        public DeleteContractCommandHandler(ILogger<DeleteContractCommandHandler> logger, DsacContext context, IMapper mapper)
+        {
+            _logger = logger;
+            _context = context;
+            _mapper = mapper;
+        }
+
+        public async Task<ResponseModel> Handle(DeleteContractCommand request, CancellationToken cancellationToken)
+        {
+            try
+            {
+                await _context.Contracts.Where(x => x.Id == request.Id).ExecuteDeleteAsync(cancellationToken);
+                
+                return new();
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error on deleting record");
+
+                return new()
+                {
+                    StatusCode = System.Net.HttpStatusCode.NotFound,
+                    ErrorText = "Cannot delete contract by id",
+                };
+            }
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Logic/Handlers/Commands/UpdateContractCommandHandler.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Logic/Handlers/Commands/UpdateContractCommandHandler.cs
@@ -0,0 +1,78 @@
+using AutoMapper;
+using DSaC_second.Database;
+using DSaC_second.Database.Models;
+using DSaC_second.Models.DTOs;
+using DSaC_second.Models.Internal;
+using DSaC_second.Models.Internal.Queries;
+using DSaC_second.Models.Internal.Сommands;
+using MediatR;
+using Microsoft.EntityFrameworkCore;
+
+namespace DSaC_second.Logic.Handlers.Commands
+{
+    public class UpdateContractCommandHandler : IRequestHandler<UpdateContractCommand, ResponseModel<ContractFullDto>>
+    {
+        private readonly ILogger _logger;
+        private readonly DsacContext _context;
+        private readonly IMapper _mapper;
+        private readonly IMediator _mediator;
+
+        public UpdateContractCommandHandler(ILogger<UpdateContractCommandHandler> logger, DsacContext context, IMapper mapper, IMediator mediator)
+        {
+            _logger = logger;
+            _context = context;
+            _mapper = mapper;
+            _mediator = mediator;
+        }
+
+        public async Task<ResponseModel<ContractFullDto>> Handle(UpdateContractCommand request, CancellationToken cancellationToken)
+        {
+            try
+            {
+                var counterparty = await _mediator.Send(new GetConunterpartyQuery()
+                {
+                    Id = request.Model.CounterpartyId,
+                }, cancellationToken: cancellationToken);
+
+                if (counterparty.IsError)
+                    return new()
+                    {
+                        StatusCode = System.Net.HttpStatusCode.NotFound,
+                        ErrorText = counterparty.ErrorText,
+                    };
+                if(counterparty.Value == null)
+                    return new()
+                    {
+                        StatusCode = System.Net.HttpStatusCode.NotFound,
+                        ErrorText = "Cpty with this id not found",
+                    };
+
+                var model = _mapper.Map<Contract>(request.Model);
+
+                _context.Contracts.Update(model);
+
+                await _context.SaveChangesAsync(cancellationToken: cancellationToken);
+
+                var res = _mapper.Map<ContractFullDto>(model);
+
+                res.Counterparty = counterparty.Value!;
+
+                return new() 
+                { 
+                    Value = res 
+                };
+
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error on updating record");
+
+                return new()
+                {
+                    StatusCode = System.Net.HttpStatusCode.NotFound,
+                    ErrorText = "Cannot update contract by id",
+                };
+            }
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Logic/Handlers/Queries/GetContractQueryHandler.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Logic/Handlers/Queries/GetContractQueryHandler.cs
@@ -0,0 +1,71 @@
+using AutoMapper;
+using DSaC_second.Database;
+using DSaC_second.Models.DTOs;
+using DSaC_second.Models.Internal;
+using DSaC_second.Models.Internal.Queries;
+using MediatR;
+using Microsoft.EntityFrameworkCore;
+
+namespace DSaC_second.Logic.Handlers.Queries
+{
+    public class GetContractQueryHandler : IRequestHandler<GetContractQuery, ResponseModel<ContractFullDto>>
+    {
+        private readonly ILogger _logger;
+        private readonly DsacContext _context;
+        private readonly IMapper _mapper;
+        private readonly IMediator _mediator;
+
+        public GetContractQueryHandler(ILogger<GetContractQueryHandler> logger, DsacContext context, IMapper mapper, IMediator mediator)
+        {
+            _logger = logger;
+            _context = context;
+            _mapper = mapper;
+            _mediator = mediator;
+        }
+
+        public async Task<ResponseModel<ContractFullDto>> Handle(GetContractQuery request, CancellationToken cancellationToken)
+        {
+            try
+            {
+                var res = await _context.Contracts.FirstOrDefaultAsync(x => x.Id == request.Id, cancellationToken: cancellationToken);
+
+                if (res == null)
+                    return new()
+                    {
+                        StatusCode = System.Net.HttpStatusCode.NotFound,
+                        ErrorText = "Contract with whit Id is not exist"
+                    };
+                var counterparty = await _mediator.Send(new GetConunterpartyQuery()
+                {
+                    Id = res.CounterpartyId
+                }, cancellationToken: cancellationToken);
+
+                if (counterparty.IsError)
+                    return new()
+                    {
+                        StatusCode = System.Net.HttpStatusCode.NotFound,
+                        ErrorText = counterparty.ErrorText
+                    };
+
+                var model = _mapper.Map<ContractFullDto>(res);
+                model.Counterparty = counterparty.Value!;
+
+                return new()
+                {
+                    Value = model,
+                };
+
+            }
+            catch (Exception ex) 
+            {
+                _logger.LogError(ex, "Error on getting record");
+
+                return new()
+                {
+                    StatusCode = System.Net.HttpStatusCode.NotFound,
+                    ErrorText = "Cannot get contract by id",
+                };
+            }
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Logic/Handlers/Queries/GetContractsQueryHandler.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Logic/Handlers/Queries/GetContractsQueryHandler.cs
@@ -0,0 +1,50 @@
+using AutoMapper;
+using DSaC_second.Database;
+using DSaC_second.Models.DTOs;
+using DSaC_second.Models.Internal;
+using DSaC_second.Models.Internal.Queries;
+using MediatR;
+using Microsoft.EntityFrameworkCore;
+
+namespace DSaC_second.Logic.Handlers.Queries
+{
+    public class GetContractsQueryHandler : IRequestHandler<GetContractsQuery, ResponseModel<List<ContractViewDto>>>
+    {
+        private readonly ILogger _logger;
+        private readonly DsacContext _context;
+        private readonly IMapper _mapper;
+
+        public GetContractsQueryHandler(ILogger<GetContractsQueryHandler> logger, DsacContext context, IMapper mapper)
+        {
+            _logger = logger;
+            _context = context;
+            _mapper = mapper;
+        }
+
+        public async Task<ResponseModel<List<ContractViewDto>>> Handle(GetContractsQuery request, CancellationToken cancellationToken)
+        {
+            try 
+            {
+                var res = await _context.Contracts
+                    .Where(x=>request.Ids == null || request.Ids.Contains(x.Id))
+                        .Skip(request.Page * request.PageSize).Take(request.PageSize)
+                        .ToListAsync(cancellationToken: cancellationToken);
+
+                return new()
+                {
+                    Value = res.Select(_mapper.Map<ContractViewDto>).ToList(),
+                };
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error on getting records");
+
+                return new()
+                {
+                    StatusCode = System.Net.HttpStatusCode.NotFound,
+                    ErrorText = "Cannot get contracts",
+                };
+            }
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Logic/Handlers/Queries/GetConunterpartyQueryHandler.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Logic/Handlers/Queries/GetConunterpartyQueryHandler.cs
@@ -0,0 +1,72 @@
+using AutoMapper;
+using DSaC_second.Database;
+using DSaC_second.Logic.Handlers.Commands;
+using DSaC_second.Models.DTOs;
+using DSaC_second.Models.Internal;
+using DSaC_second.Models.Internal.Queries;
+using MediatR;
+using PIHelperSh.Configuration.Attributes;
+using RestSharp;
+
+namespace DSaC_second.Logic.Handlers.Queries
+{
+    [TrackedType]
+    public class GetConunterpartyQueryHandler : IRequestHandler<GetConunterpartyQuery, ResponseModel<CounterpartyViewDto>>
+    {
+        private readonly ILogger _logger;
+        private readonly DsacContext _context;
+        private readonly IMapper _mapper;
+        private readonly RestClient _restClient;
+
+        [Constant(BlockName = "FirstService")]
+        private static string BaseUrl;
+
+        [Constant(BlockName = "FirstService")]
+        private static string GetCounterpartyPostfix;
+
+        public GetConunterpartyQueryHandler(ILogger<GetConunterpartyQueryHandler> logger, DsacContext context, IMapper mapper)
+        {
+            _logger = logger;
+            _context = context;
+            _mapper = mapper;
+            _restClient = new RestClient(BaseUrl);
+        }
+
+        ~GetConunterpartyQueryHandler()
+        {
+            _restClient.Dispose();
+        }
+
+        public async Task<ResponseModel<CounterpartyViewDto>> Handle(GetConunterpartyQuery request, CancellationToken cancellationToken)
+        {
+            try
+            {
+                var rq = new RestRequest($"{GetCounterpartyPostfix}/{request.Id.ToString()}");
+
+                var res = await _restClient.ExecuteAsync<CounterpartyViewDto>(rq, cancellationToken:cancellationToken);
+
+                if (res.IsSuccessful)
+                    return new()
+                    {
+                        Value = res.Data
+                    };
+
+                return new()
+                {
+                    StatusCode = res.StatusCode,
+                    ErrorText = res.ErrorMessage,
+                };
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error on getting record from first service");
+
+                return new()
+                {
+                    StatusCode = System.Net.HttpStatusCode.NotFound,
+                    ErrorText = "Cannot get cpty from first service",
+                };
+            }
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Migrations/20240914152154_initial.Designer.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Migrations/20240914152154_initial.Designer.cs
@@ -0,0 +1,64 @@
+// <auto-generated />
+using System;
+using DSaC_second.Database;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace DSaC_second.Migrations
+{
+    [DbContext(typeof(DsacContext))]
+    [Migration("20240914152154_initial")]
+    partial class initial
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.8")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("DSaC_second.Database.Models.Contract", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid")
+                        .HasColumnName("id");
+
+                    b.Property<string>("ContractNumber")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("contract_number");
+
+                    b.Property<Guid>("CounterpartyId")
+                        .HasColumnType("uuid")
+                        .HasColumnName("counterparty_id");
+
+                    b.Property<DateTime>("CreatinTime")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("creation_time");
+
+                    b.Property<bool>("IsClosed")
+                        .HasColumnType("boolean")
+                        .HasColumnName("is_closed");
+
+                    b.Property<string>("ManagerName")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("manager_name");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("contract");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Migrations/20240914152154_initial.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Migrations/20240914152154_initial.cs
@@ -0,0 +1,38 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace DSaC_second.Migrations
+{
+    /// <inheritdoc />
+    public partial class initial : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "contract",
+                columns: table => new
+                {
+                    id = table.Column<Guid>(type: "uuid", nullable: false),
+                    contract_number = table.Column<string>(type: "text", nullable: false),
+                    manager_name = table.Column<string>(type: "text", nullable: false),
+                    counterparty_id = table.Column<Guid>(type: "uuid", nullable: false),
+                    creation_time = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    is_closed = table.Column<bool>(type: "boolean", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_contract", x => x.id);
+                });
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "contract");
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Migrations/DsacContextModelSnapshot.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Migrations/DsacContextModelSnapshot.cs
@@ -0,0 +1,61 @@
+// <auto-generated />
+using System;
+using DSaC_second.Database;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace DSaC_second.Migrations
+{
+    [DbContext(typeof(DsacContext))]
+    partial class DsacContextModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.8")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("DSaC_second.Database.Models.Contract", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid")
+                        .HasColumnName("id");
+
+                    b.Property<string>("ContractNumber")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("contract_number");
+
+                    b.Property<Guid>("CounterpartyId")
+                        .HasColumnType("uuid")
+                        .HasColumnName("counterparty_id");
+
+                    b.Property<DateTime>("CreatinTime")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("creation_time");
+
+                    b.Property<bool>("IsClosed")
+                        .HasColumnType("boolean")
+                        .HasColumnName("is_closed");
+
+                    b.Property<string>("ManagerName")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("manager_name");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("contract");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Models/DTOs/ContractBaseDto.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Models/DTOs/ContractBaseDto.cs
@@ -0,0 +1,17 @@
+using AutoMapper;
+using System.ComponentModel.DataAnnotations;
+
+namespace DSaC_second.Models.DTOs
+{
+    public class ContractBaseDto
+    {
+        [Required(ErrorMessage = "Contract number must be present")]
+        public string ContractNumber { get; set; } = null!;
+
+        [Required(ErrorMessage = "Manager name must be present")]
+        public string ManagerName { get; set; } = null!;
+
+        [Required(ErrorMessage = "Counterparty id must be present")]
+        public Guid CounterpartyId { get; set; }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Models/DTOs/ContractFullDto.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Models/DTOs/ContractFullDto.cs
@@ -0,0 +1,11 @@
+using AutoMapper;
+using DSaC_second.Database.Models;
+
+namespace DSaC_second.Models.DTOs
+{
+    [AutoMap(typeof(Contract))]
+    public class ContractFullDto: ContractViewDto
+    {
+        public CounterpartyViewDto Counterparty { get; set; } = new(); 
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Models/DTOs/ContractViewDto.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Models/DTOs/ContractViewDto.cs
@@ -0,0 +1,15 @@
+using AutoMapper;
+using DSaC_second.Database.Models;
+
+namespace DSaC_second.Models.DTOs
+{
+    [AutoMap(typeof(Contract))]
+    public class ContractViewDto: ContractBaseDto
+    {
+        public Guid Id { get; set; }
+
+        public DateTime CreatinTime { get; set; }
+
+        public bool IsClosed { get; set; }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Models/DTOs/CounterpartyViewDto.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Models/DTOs/CounterpartyViewDto.cs
@@ -0,0 +1,12 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace DSaC_second.Models.DTOs
+{
+    public class CounterpartyViewDto
+    {
+        public Guid Id { get; set; }
+
+        [Required(ErrorMessage = "Cpty name must be present")]
+        public string Name { get; set; } = null!;
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Models/Internal/Queries/GetContractQuery.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Models/Internal/Queries/GetContractQuery.cs
@@ -0,0 +1,10 @@
+using DSaC_second.Models.DTOs;
+using MediatR;
+
+namespace DSaC_second.Models.Internal.Queries
+{
+    public class GetContractQuery : IRequest<ResponseModel<ContractFullDto>>
+    {
+        public Guid Id { get; set; }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Models/Internal/Queries/GetContractsQuery.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Models/Internal/Queries/GetContractsQuery.cs
@@ -0,0 +1,14 @@
+using DSaC_second.Models.DTOs;
+using MediatR;
+
+namespace DSaC_second.Models.Internal.Queries
+{
+    public class GetContractsQuery : IRequest<ResponseModel<List<ContractViewDto>>>
+    {
+        public List<Guid>? Ids { get; set; }
+
+        public int Page { get; set; }
+
+        public int PageSize { get; set; }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Models/Internal/Queries/GetConunterpartyQuery.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Models/Internal/Queries/GetConunterpartyQuery.cs
@@ -0,0 +1,10 @@
+using DSaC_second.Models.DTOs;
+using MediatR;
+
+namespace DSaC_second.Models.Internal.Queries
+{
+    public class GetConunterpartyQuery: IRequest<ResponseModel<CounterpartyViewDto>>
+    {
+        public Guid Id { get; set; }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Models/Internal/ResponseModel.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Models/Internal/ResponseModel.cs
@@ -0,0 +1,30 @@
+using System.Net;
+
+namespace DSaC_second.Models.Internal
+{
+    public class ResponseModel
+    {
+        public string? ErrorText;
+
+        public bool IsError => !string.IsNullOrEmpty(ErrorText);
+
+        private int? _errorCode = 200;
+
+        public int? ErrorCode
+        {
+            get => _errorCode;
+            set => _errorCode = value;
+        }
+
+        public HttpStatusCode? StatusCode
+        {
+            get => (HttpStatusCode?)_errorCode;
+            set => _errorCode = (int?)value;
+        }
+    }
+
+    public class ResponseModel<T> : ResponseModel
+    {
+        public T? Value { get; set; }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Models/Internal/Сommands/CreateContractCommand.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Models/Internal/Сommands/CreateContractCommand.cs
@@ -0,0 +1,10 @@
+using DSaC_second.Models.DTOs;
+using MediatR;
+
+namespace DSaC_second.Models.Internal.Сommands
+{
+    public class CreateContractCommand : IRequest<ResponseModel<ContractFullDto>>
+    {
+        public ContractBaseDto Model { get; set; } = null!;
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Models/Internal/Сommands/DeleteContractCommand.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Models/Internal/Сommands/DeleteContractCommand.cs
@@ -0,0 +1,9 @@
+using MediatR;
+
+namespace DSaC_second.Models.Internal.Сommands
+{
+    public class DeleteContractCommand : IRequest<ResponseModel>
+    {
+        public Guid Id { get; set; }
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Models/Internal/Сommands/UpdateContractCommand.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Models/Internal/Сommands/UpdateContractCommand.cs
@@ -0,0 +1,14 @@
+using DSaC_second.Models.DTOs;
+using MediatR;
+using System.ComponentModel.DataAnnotations;
+
+namespace DSaC_second.Models.Internal.Сommands
+{
+    public class UpdateContractCommand : IRequest<ResponseModel<ContractFullDto>>
+    {
+        public Guid Id { get; set; }
+
+        [Required(ErrorMessage = "Update model msust be present")]
+        public ContractViewDto Model { get; set; } = null!;
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Program.cs
+++ b/kuzarin_maxim_lab_3/DSaC_second/Program.cs
@@ -0,0 +1,130 @@
+using DSaC_second.Database;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.OpenApi.Models;
+using NLog.Config;
+using NLog.Extensions.Logging;
+using NLog.Targets;
+using PIHelperSh.Configuration;
+using PIHelperSh.Configuration.Attributes;
+using System;
+using System.Reflection;
+using LogLevel = NLog.LogLevel;
+
+[TrackedType]
+public class Program
+{
+    private static WebApplication? app;
+
+    [Constant(BlockName = "Database")]
+    private static string ConnectionString;
+
+    [Constant(BlockName = "GatewaySettings")]
+    private static string AppPrefix;
+    public static void Main(string[] args)
+    {
+        var builder = WebApplication.CreateBuilder(args);
+
+        ConfigureLogger(builder);
+
+        ConfigureServices(builder);
+
+        ConfigureDatabase(builder);
+
+        app = builder.Build();
+
+        var t = MigrateDatabase();
+
+        app.UseSwagger(c =>
+        {
+            if (!string.IsNullOrEmpty(AppPrefix))
+            {
+                //c.RouteTemplate = AppPrefix + "/swagger/{documentName}/swagger.json";
+
+                c.PreSerializeFilters.Add((swaggerDoc, httpReq) =>
+                {
+                    swaggerDoc.Servers = new List<OpenApiServer> { new OpenApiServer { Url = $"{httpReq.Scheme}://{httpReq.Host.Value}/{AppPrefix}" } };
+                });
+            }
+
+        });
+        app.UseSwaggerUI(c =>
+        {
+            //if (!string.IsNullOrEmpty(AppPrefix))
+            //{
+            //    c.SwaggerEndpoint($"/{AppPrefix}/swagger/v1/swagger.json", $"APP API");
+            //    c.RoutePrefix = $"{AppPrefix}/swagger";
+            //}
+        });
+
+        app.UseHttpsRedirection();
+
+        app.UseAuthorization();
+
+        app.MapControllers();
+
+        t.Wait();
+
+        app.Run();
+    }
+
+    private static void ConfigureLogger(WebApplicationBuilder builder)
+    {
+        var nLogConfig = new LoggingConfiguration();
+        var logConsole = new ConsoleTarget();
+        var blackhole = new NullTarget();
+
+        var logFile = new FileTarget()
+        {
+            FileName = "${basedir}/logs/${shortdate}_logs.log"
+        };
+
+        nLogConfig.AddRule(LogLevel.Trace, LogLevel.Trace, blackhole, "Microsoft.AspNetCore.*", true);
+        nLogConfig.AddRule(LogLevel.Info, LogLevel.Warn, logFile, "Microsoft.EntityFrameworkCore.*", true);
+        nLogConfig.AddRule(LogLevel.Info, LogLevel.Warn, logFile, "Microsoft.AspNetCore.*", true);
+        nLogConfig.AddRule(LogLevel.Info, LogLevel.Warn, logFile, "System.Net.Http.HttpClient.Refit.*", true);
+        nLogConfig.AddRule(LogLevel.Info, LogLevel.Error, logConsole);
+        nLogConfig.AddRule(LogLevel.Debug, LogLevel.Error, logFile);
+
+        builder.Logging.ClearProviders();
+        builder.Services.AddLogging(m => m.AddNLog(nLogConfig));
+    }
+
+    private static void ConfigureServices(WebApplicationBuilder builder)
+    {
+        builder.Services.AddConfigurations(builder.Configuration);
+        builder.Configuration.AddConstants();
+        builder.Services.AddAutoMapper(AppDomain.CurrentDomain.GetAssemblies());
+
+        builder.Services.AddMediatR(cfg => cfg.RegisterServicesFromAssemblyContaining<Program>());
+
+        builder.Services.AddControllers().AddNewtonsoftJson();
+
+        builder.Services.AddEndpointsApiExplorer();
+        builder.Services.AddSwaggerGen(c =>
+        {
+            c.SwaggerDoc("v1", new OpenApiInfo
+            {
+                Title = "Distributed computing and applications",
+                Version = "v1",
+                Description = ""
+            });
+
+            //c.EnableAnnotations();
+        });
+    }
+
+    private static void ConfigureDatabase(WebApplicationBuilder builder) 
+    {
+        builder.Services.AddDbContext<DsacContext>(options =>
+        {
+            options.UseNpgsql(ConnectionString);
+        });
+    }
+
+    private static async Task MigrateDatabase()
+    {
+        var context = app?.Services.CreateScope().ServiceProvider.GetService<DsacContext>();
+        if(context != null)
+            await context.Database.MigrateAsync();
+    }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/Properties/launchSettings.json
+++ b/kuzarin_maxim_lab_3/DSaC_second/Properties/launchSettings.json
@@ -0,0 +1,53 @@
+{
+  "profiles": {
+    "http": {
+      "commandName": "Project",
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development",
+        "GATEWAY_SETTINGS_APP_PREFIX": "first"
+      },
+      "dotnetRunMessages": true,
+      "applicationUrl": "http://localhost:5246"
+    },
+    "https": {
+      "commandName": "Project",
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      },
+      "dotnetRunMessages": true,
+      "applicationUrl": "https://localhost:7239;http://localhost:5246"
+    },
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "Container (Dockerfile)": {
+      "commandName": "Docker",
+      "launchBrowser": true,
+      "launchUrl": "{Scheme}://{ServiceHost}:{ServicePort}/swagger",
+      "environmentVariables": {
+        "ASPNETCORE_HTTPS_PORTS": "8081",
+        "ASPNETCORE_HTTP_PORTS": "8080"
+      },
+      "publishAllPorts": true,
+      "useSSL": true
+    }
+  },
+  "$schema": "http://json.schemastore.org/launchsettings.json",
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:56866",
+      "sslPort": 44308
+    }
+  }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/appsettings.Development.json
+++ b/kuzarin_maxim_lab_3/DSaC_second/appsettings.Development.json
@@ -0,0 +1,18 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "Database": {
+    "ConnectionString": "Host=db.dev-moio.online;Port=31153;Database=dsac_maxim;Username=postgres;Password=postgres_password"
+  },
+  "FirstService": {
+    "BaseUrl": "http://localhost:5062/api",
+    "GetCounterpartyPostfix": "/Counterparties"
+  },
+  "GatewaySettings": {
+    "AppPrefix": ""
+  }
+}
--- a/kuzarin_maxim_lab_3/DSaC_second/appsettings.json
+++ b/kuzarin_maxim_lab_3/DSaC_second/appsettings.json
@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}
--- a/kuzarin_maxim_lab_3/README.md
+++ b/kuzarin_maxim_lab_3/README.md
@@ -0,0 +1,18 @@
+# Лабораторная работа 3
+Данная работа посвящена теме синхронного обмена сообщениями между сервисами, а так же шлюзам, для взаимодействия с внешним миром.
+## Описание
+В качестве предметной области использовался пример 18-го варианта. Имеются 2 сущность: контрагент(только имя) и договор(номер, ФИО менеджера, дата создания и статус).
+Для реализации была выбрана платформа ASP.net. Информация хранится в СУБД Postgres, которая так же поднимается в контейнере(вместе с остальными сервисами)
+Система позволяет проводить с сущностями базовые CRUD операции. В случае договора, имеется возможность получения его в связке с информацией по контрагенту(не просто Id, но и имя). В этот момент сервисы и взаимодействуют друг с другом. Для этого используется шлюз(напрямую сервисы друг о друге могут и не знать, общение как с внешним миром так и между собой только через nginx шлюз)
+В качестве интерфейса имеется Swagger, который можно использовать для отправки запросов. Он и будет показан в видеодеомнстрации
+## Запуск
+Для запуска лабораторной работы необходимо иметь запущенный движок Docker на устройстве.
+Необходимо перейти в папку, где располагается данный файл. Далее открыть терминал и ввести команду:
+```
+docker compose up -d --build
+```
+Важно, чтобы в этот момент на компьютере был свободен порт 80.
+В результате, после сборки вся система запустится и Swagger-ы будут доступны по путям http://localhost/first/swagger и http://localhost/second/swagger
+## Видеодемонстрация
+Был записан видеоролик, демонстрирующий процесс запуска и работы системы, а так же всех её основных функйи. Он расположен по [адресу](https://drive.google.com/file/d/17OwZ6kEJ-AaW0uMTIfNtolyp-oyy9OfT/view?usp=sharing)
+
--- a/kuzarin_maxim_lab_3/compose.yaml
+++ b/kuzarin_maxim_lab_3/compose.yaml
@@ -0,0 +1,37 @@
+services:
+    postgres:
+        image: postgres
+        ports:
+            - 5432:5432
+        environment:
+            POSTGRES_PASSWORD: "password"
+
+    nginx:
+        image: nginx
+        depends_on:
+            - second
+            - first
+        volumes:
+            - ./nginx/nginx.conf:/etc/nginx/conf.d/default.conf
+        ports:
+            - 80:80
+    
+    first:
+        build: .\DSaC
+        depends_on:
+            - postgres
+        environment:
+            DATABASE_CONNECTION_STRING: "Host=postgres;Database=dsac_maxim_1;Username=postgres;Password=password"
+            GATEWAY_SETTINGS_APP_PREFIX: "first" # Нужно, чтобы запросы из Swagger работали нормально 
+
+    second:
+        build: .\DSaC_second
+        depends_on:
+            - first
+        environment:
+            DATABASE_CONNECTION_STRING: "Host=postgres;Database=dsac_maxim_2;Username=postgres;Password=password"
+            FIRST_SERVICE_BASE_URL: "http://nginx/first/api"
+            FIRST_SERVICE_GET_COUNTERPARTY_POSTFIX: "/Counterparties"
+            GATEWAY_SETTINGS_APP_PREFIX: "second"
+
+    
--- a/kuzarin_maxim_lab_3/nginx/nginx.conf
+++ b/kuzarin_maxim_lab_3/nginx/nginx.conf
@@ -0,0 +1,22 @@
+
+server {
+    listen      80;
+    listen      [::]:80;
+    server_name localhost;
+
+    location /first/ {
+        proxy_pass       http://first:8080/;
+        proxy_set_header Host      $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header X-Forwarded-Prefix /test;
+    }
+
+    location /second/ {
+        proxy_pass       http://second:8080/;
+        proxy_set_header Host      $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header X-Forwarded-Prefix /admin;
+    }
+}
Author	SHA1	Message	Date
KuzarinM	8eedde24a1	ЛР 3 готова. Нужно проверить пару моментов, но в целом всё должно быть нормально	2024-09-19 10:53:49 +03:00
Alexey	829a04a913	Merge pull request 'Kuzarin_maxim_lab_2' (#8 ) from kuzarin_maxim_lab_2 into main Reviewed-on: Alexey/DAS_2024_1#8	2024-09-19 11:19:58 +04:00
KuzarinM	253ad80e31	Работа готова. Нужнго проверить Readme, но вроде норм	2024-09-17 14:13:30 +03:00