main #3

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Hlop4ik4 merged 237 commits from v.moiseev/distributed-computing:main into main 2024-01-06 17:16:53 +04:00
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# Отчет по лабораторной работе №3
Выполнила студентка гр. ИСЭбд-41 Воронкова Е.С.
## REST API, Gateway и синхронный обмен между микросервисами
## Создание микросервисов
1. С помощью команды `dotnet new web -n worker-1` в терминале был создан первый микросервис
2. В папке созданного проекта добавлено решение командой `dotnet new sln`
3. Затем связали решение и проект командой `dotnet sln worker-2.sln add worker-1.csproj`
4. Повторили те же действия для второго микросервиса
5. Добавили библиотеку Swagger и OpenAi в обе папки проектов и запустили с помощью команды `dotnet run`
Моя предметная область - Медицина. Реализовала две сущности - лекарство и аптека
Скриншоты протестированных микросервисов:
Worker-1:
![](images/screen_1.png)
Worker-2:
![](images/screen_2.png)
## Реализация синхронного обмена
Был реализован код, который вызывает сихронно данные из соседнего микросервиса
```cs
//worker-2
app.MapGet("/Requests/", async () =>
{
var httpClient = new HttpClient();
var secondWorkerResponse = await httpClient.GetStringAsync("http://worker-1:8085/");
return secondWorkerResponse;
});
```
## Реализация gateway при помощи nginx
Добавила nginx.conf:
```conf
server {
listen 8085;
listen [::]:8085;
server_name localhost;
location / {
root /usr/share/nginx/html;
index index.html index.htm;
}
location /worker-1/ {
proxy_pass http://worker-1:8085/;
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 /worker-1;
}
location /worker-2/ {
proxy_pass http://worker-2:8085/;
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 /worker-2;
}
}
```

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server {
listen 8085;
listen [::]:8085;
server_name localhost;
location / {
root /usr/share/nginx/html;
index index.html index.htm;
}
location /worker-1/ {
proxy_pass http://worker-1:8085/;
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 /worker-1;
}
location /worker-2/ {
proxy_pass http://worker-2:8085/;
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 /worker-2;
}
}

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using Microsoft.AspNetCore.Builder;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.OpenApi.Models;
using System;
using System.Collections.Generic;
using System.Linq;
var builder = WebApplication.CreateBuilder(args);
builder.Services.AddSingleton<DrugstoreService>();
// Add Swagger services
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen(c =>
{
c.SwaggerDoc("v1", new OpenApiInfo { Title = "My API", Version = "v1" });
});
var app = builder.Build();
// Configure the HTTP request pipeline.
app.UseSwagger();
app.UseSwaggerUI(c =>
{
c.SwaggerEndpoint("/swagger/v1/swagger.json", "My API V1");
});
app.MapGet("/", (DrugstoreService service) => service.GetAll());
app.MapGet("/drugstores/{id}", (DrugstoreService service, Guid id) =>
{
var drugstore = service.Get(id);
return drugstore is not null ? Results.Ok(drugstore) : Results.NotFound();
});
app.MapPost("/drugstores", (DrugstoreService service, Drugstore drugstore) =>
{
service.Create(drugstore);
return Results.Created($"/drugstores/{drugstore.Id}", drugstore);
});
app.MapPut("/drugstores/{id}", (DrugstoreService service, Drugstore updatedDrugstore, Guid id) =>
{
var drugstore = service.Get(id);
if (drugstore is null) return Results.NotFound();
service.Update(updatedDrugstore);
return Results.Ok(updatedDrugstore);
});
app.MapDelete("/drugstores/{id}", (DrugstoreService service, Guid id) =>
{
service.Delete(id);
return Results.Ok();
});
app.Run();
public record Drugstore(Guid Id, string Name, string Address);
public class DrugstoreService
{
private readonly List<Drugstore> _drugstores = new();
public List<Drugstore> GetAll() => _drugstores;
public Drugstore? Get(Guid id) => _drugstores.FirstOrDefault(d => d.Id == id);
public void Create(Drugstore newDrugstore) => _drugstores.Add(newDrugstore);
public void Update(Drugstore updatedDrugstore)
{
var index = _drugstores.FindIndex(d => d.Id == updatedDrugstore.Id);
if (index == -1) return;
_drugstores[index] = updatedDrugstore;
}
public void Delete(Guid id)
{
var drugstore = Get(id);
if (drugstore is null) return;
_drugstores.Remove(drugstore);
}
}

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{
"$schema": "http://json.schemastore.org/launchsettings.json",
"iisSettings": {
"windowsAuthentication": false,
"anonymousAuthentication": true,
"iisExpress": {
"applicationUrl": "http://localhost:27639",
"sslPort": 44315
}
},
"profiles": {
"http": {
"commandName": "Project",
"dotnetRunMessages": true,
"launchBrowser": true,
"applicationUrl": "http://localhost:5111",
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development"
}
},
"https": {
"commandName": "Project",
"dotnetRunMessages": true,
"launchBrowser": true,
"applicationUrl": "https://localhost:7158;http://localhost:5111",
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development"
}
},
"IIS Express": {
"commandName": "IISExpress",
"launchBrowser": true,
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development"
}
}
}
}

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{
"Logging": {
"LogLevel": {
"Default": "Information",
"Microsoft.AspNetCore": "Warning"
}
}
}

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{
"Logging": {
"LogLevel": {
"Default": "Information",
"Microsoft.AspNetCore": "Warning"
}
},
"AllowedHosts": "*"
}

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<Project Sdk="Microsoft.NET.Sdk.Web">
<PropertyGroup>
<TargetFramework>net7.0</TargetFramework>
<Nullable>enable</Nullable>
<ImplicitUsings>enable</ImplicitUsings>
<RootNamespace>worker_1</RootNamespace>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="7.0.14" />
<PackageReference Include="Swashbuckle.AspNetCore" Version="6.5.0" />
</ItemGroup>
</Project>

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Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio Version 17
VisualStudioVersion = 17.0.31903.59
MinimumVisualStudioVersion = 10.0.40219.1
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "worker-1", "worker-1.csproj", "{1349D735-BA13-4E34-A67C-D6C50025DFA2}"
EndProject
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "worker-2", "..\worker-2\worker-2.csproj", "{55A9B14A-B8D5-42C0-A17E-6615A6A224E9}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
Release|Any CPU = Release|Any CPU
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{1349D735-BA13-4E34-A67C-D6C50025DFA2}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{1349D735-BA13-4E34-A67C-D6C50025DFA2}.Debug|Any CPU.Build.0 = Debug|Any CPU
{1349D735-BA13-4E34-A67C-D6C50025DFA2}.Release|Any CPU.ActiveCfg = Release|Any CPU
{1349D735-BA13-4E34-A67C-D6C50025DFA2}.Release|Any CPU.Build.0 = Release|Any CPU
{55A9B14A-B8D5-42C0-A17E-6615A6A224E9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{55A9B14A-B8D5-42C0-A17E-6615A6A224E9}.Debug|Any CPU.Build.0 = Debug|Any CPU
{55A9B14A-B8D5-42C0-A17E-6615A6A224E9}.Release|Any CPU.ActiveCfg = Release|Any CPU
{55A9B14A-B8D5-42C0-A17E-6615A6A224E9}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {D167A75B-99E2-45CB-8668-84D336B4370C}
EndGlobalSection
EndGlobal

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using Microsoft.OpenApi.Models;
var builder = WebApplication.CreateBuilder(args);
// Add Swagger services
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen(c =>
{
c.SwaggerDoc("v1", new OpenApiInfo { Title = "My API", Version = "v1" });
});
var app = builder.Build();
// Configure the HTTP request pipeline.
app.UseSwagger();
app.UseSwaggerUI(c =>
{
c.SwaggerEndpoint("/swagger/v1/swagger.json", "My API V1");
});
List<Medicine> medicines = new List<Medicine>();
app.MapGet("/medicines", () => medicines);
app.MapGet("/medicine/{id}", (Guid id) =>
{
var medicine = medicines.FirstOrDefault(m => m.Id == id);
return medicine is null ? Results.NotFound() : Results.Ok(medicine);
});
app.MapPost("/medicine", (Medicine medicine) =>
{
medicines.Add(medicine);
return Results.Created($"/medicine/{medicine.Id}", medicine);
});
app.MapPut("/medicine/{id}", (Guid id, Medicine inputMedicine) =>
{
var medicine = medicines.FirstOrDefault(m => m.Id == id);
if (medicine is null) return Results.NotFound();
medicine.Name = inputMedicine.Name;
medicine.Dose = inputMedicine.Dose;
medicine.ExpirationDate = inputMedicine.ExpirationDate;
return Results.NoContent();
});
app.MapDelete("/medicine/{id}", (Guid id) =>
{
var medicine = medicines.FirstOrDefault(m => m.Id == id);
if (medicine is null) return Results.NotFound();
medicines.Remove(medicine);
return Results.Ok(medicine);
});
app.MapGet("/Requests/", async () =>
{
var httpClient = new HttpClient();
var secondWorkerResponse = await httpClient.GetStringAsync("http://worker-1:8085/");
return secondWorkerResponse;
});
app.Run();
public class Medicine
{
public Guid Id { get; set; }
public string Name { get; set; }
public int Dose { get; set; }
public DateTime ExpirationDate { get; set; }
}

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{
"$schema": "http://json.schemastore.org/launchsettings.json",
"iisSettings": {
"windowsAuthentication": false,
"anonymousAuthentication": true,
"iisExpress": {
"applicationUrl": "http://localhost:6437",
"sslPort": 44360
}
},
"profiles": {
"http": {
"commandName": "Project",
"dotnetRunMessages": true,
"launchBrowser": true,
"applicationUrl": "http://localhost:5041",
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development"
}
},
"https": {
"commandName": "Project",
"dotnetRunMessages": true,
"launchBrowser": true,
"applicationUrl": "https://localhost:7064;http://localhost:5041",
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development"
}
},
"IIS Express": {
"commandName": "IISExpress",
"launchBrowser": true,
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development"
}
}
}
}

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@ -0,0 +1,8 @@
{
"Logging": {
"LogLevel": {
"Default": "Information",
"Microsoft.AspNetCore": "Warning"
}
}
}

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@ -0,0 +1,9 @@
{
"Logging": {
"LogLevel": {
"Default": "Information",
"Microsoft.AspNetCore": "Warning"
}
},
"AllowedHosts": "*"
}

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<Project Sdk="Microsoft.NET.Sdk.Web">
<PropertyGroup>
<TargetFramework>net7.0</TargetFramework>
<Nullable>enable</Nullable>
<ImplicitUsings>enable</ImplicitUsings>
<RootNamespace>worker_2</RootNamespace>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="7.0.14" />
<PackageReference Include="Swashbuckle.AspNetCore" Version="6.5.0" />
</ItemGroup>
</Project>