Merge pull request 'savenkov_alexander_lab_3 is ready' (#10) from savenkov_alexander_lab_3 into main

Reviewed-on: http://student.git.athene.tech/Alexey/DAS_2023_1/pulls/10

savenkov_alexander_lab_3/README.md

@@ -0,0 +1,167 @@
+# Лабораторная работа №3 - REST API, Gateway и синхронный обмен между микросервисами
+
+Цель: изучение шаблона проектирования gateway, построения синхронного обмена между микросервисами и архитектурного стиля RESTful API.
+
+Задачи:
+
+Создать 2 микросервиса, реализующих CRUD на связанных сущностях.
+Реализовать механизм синхронного обмена сообщениями между микросервисами.
+Реализовать шлюз на основе прозрачного прокси-сервера nginx.
+
+# Создание микросервисов
+1-й микросервис - video-conferencing-application для сущности Приложение для видеоконференций
+2-й микросервис - webcam-application для сущности Веб-камера
+
+Сущность: Веб-камера (Webcam):
+1. УИД (Уникальный идентификатор): Уникальный номер или код, идентифицирующий конкретную веб-камеру.
+2. Модель (Model): Название и модель веб-камеры.
+3. Разрешение (Resolution): Максимальное разрешение видеозаписи, которое может предоставить веб-камера.
+4. Интерфейс (Interface): Тип интерфейса для подключения к компьютеру (USB, Wi-Fi и т.д.).
+5. УИД видеоконференции (subscriptionUuid): УИД видеоконференции, с которым данная веб-камера связана. Это поле устанавливает связь "1-ко-многим" между веб-камерой и приложением.
+6. Информация о видеоконференции (subscriptionInfo): Информация полученная по subscriptionUuid и УИД видеоконференций о приложении для видеоконференции. Хранит в себе информацию об Приложение для видеоконференций (Name, Supported Platforms, Maximum Participants)
+
+Сущность: Приложение для видеоконференций (Video Conferencing Application):
+1. УИД (Уникальный идентификатор): Уникальный номер или код, идентифицирующий конкретное приложение для видеоконференций.
+2. Название (Name): Название приложения для видеоконференций.
+3. Поддерживаемые платформы (Supported Platforms): Операционные системы и устройства, на которых работает приложение (Windows, macOS, iOS, Android и др.).
+4. Максимальное количество участников (Maximum Participants): Максимальное количество пользователей, которое может присоединиться к одной видеоконференции.
+
+Связь "1-ко-многим" между этими сущностями реализуется через поле "УИД приложения" в сущности "Веб-камера". Каждая веб-камера связывается с конкретным приложением для видеоконференций через УИД этого приложения, и это позволяет одному приложению быть связанным с несколькими веб-камерами.
+
+Вот примеры моделей для запросов:
+Пример модели "Приложение для видеоконференций" для списка:
+{
+    "uuid": "8f036445-a5bd-401c-926e-840f9de795cd",
+    "Name": "Zoom",
+    "Supported Platforms": "Windows, macOS, iOS, Android",
+    "Maximum Participants": 500
+}
+Пример модели "Приложение для видеоконференций" для создания или изменения:
+{
+    "uuid": "8f036445-a5bd-401c-926e-840f9de795cd",
+    "Name": " Zoom",
+    "Supported Platforms": "Windows, macOS, iOS, Android",
+    "Maximum Participants": 500
+}
+Пример модели "Веб-камера" для списка:
+{
+    "uuid": "8740d660-b251-4272-8535-be7ec3748d4b",
+    "Model": "Logitech C920",
+    "Resolution": "Full HD 1080p",
+    "Interface": "USB",
+    "subscriptionUuid": "8f036445-a5bd-401c-926e-840f9de795cd"
+}
+Пример модели "Веб-камера" для создания или изменения:
+{
+    "Model": " Logitech C920",
+    "Resolution": " Full HD 1080p 	",
+    "Interface": "USB",
+    "subscriptionUuid": "8f036445-a5bd-401c-926e-840f9de795cd"
+}
+Пример модели "Веб-камера" для подробностей:
+{
+    "uuid": "8740d660-b251-4272-8535-be7ec3748d4b",
+    "Model": "Logitech C920",
+    "Resolution": "Full HD 1080p",
+    "Interface": "USB",
+    "subscriptionUuid": "8f036445-a5bd-401c-926e-840f9de795cd",
+    "subscriptionInfo": {
+        "Name": "Zoom",
+        "Supported Platforms": "Windows, macOS, iOS, Android",
+        "Maximum Participants": 500
+    }
+}
+
+<p>
+    <div>Структура 1-го микросервиса</div>
+    <img src="screens/img1.png" width="650" title="Структура 1-го микросервиса">
+</p>
+<p>
+    <div>Структура 2-го микросервиса</div>
+    <img src="screens/img2.png" width="650" title="Структура 2-го микросервиса">
+</p>
+- контроллеры для обработка запросов, дтошки для выбора что изображать в сваггере при запросах, модели для сущностей, репозитории для отправки данных, сервисы для бизнес-логики
+
+# Докер файлы, докер компоус, nginx
+
+<p>
+    <div>Докер файл для 1-го микросервиса</div>
+    <img src="screens/img3.png" width="650" title="Докер файл для 1-го микросервиса">
+</p>
+<p>
+    <div>Докер файл для 2-го микросервиса</div>
+    <img src="screens/img4.png" width="650" title="Докер файл для 2-го микросервиса">
+</p>
+-Использования базового образа, установка рабочий директории, копирования джар файла, экспорт порта, запуск приложения при запуске контейнера
+<p>
+    <div>Докер компоус</div>
+    <img src="screens/img5.png" width="650" title="Докер компоус">
+</p>
+-создания общей сети для всех сервисов, запуск образов сервисов, проброска портов, копирования конфигурационного файла nginx и запуск этого сервиса после запуска других сервисов 
+<p>
+    <div>nginx</div>
+    <img src="screens/img6.png" width="650" title="nginx">
+</p>
+установка количества одновремменных подключений, прослушка запросов по 80 порту, серверное имя локалхост, адрес для переадресации запросов по нему, url переадрусации
+<p>
+    <div>Скрин созданых образов</div>
+    <img src="screens/img7.png" width="650" title="Скрин созданых образов">
+</p>
+<p>
+    <div>Скрин созданых контейнеров</div>
+    <img src="screens/img8.png" width="650" title="Скрин созданых контейнеров">
+</p>
+<p>
+    <div>Swagger 1-го микросервиса</div>
+    <img src="screens/img9.png" width="650" title="Swagger 1-го микросервиса">
+</p>
+<p>
+    <img src="screens/img10.png" width="650">
+</p>
+<p>
+    <img src="screens/img11.png" width="650">
+</p>
+<p>
+    <img src="screens/img12.png" width="650">
+</p>
+<p>
+    <img src="screens/img13.png" width="650">
+</p>
+<p>
+    <img src="screens/img14.png" width="650">
+</p>
+<p>
+    <img src="screens/img15.png" width="650">
+</p>
+<p>
+    <img src="screens/img16.png" width="650">
+</p>
+<p>
+    <div>Swagger 2-го микросервиса</div>
+    <img src="screens/img17.png" width="650" title="Swagger 2-го микросервиса">
+</p>
+<p>
+    <img src="screens/img18.png" width="650">
+</p>
+<p>
+    <img src="screens/img19.png" width="650">
+</p>
+<p>
+    <img src="screens/img20.png" width="650">
+</p>
+<p>
+    <img src="screens/img21.png" width="650">
+</p>
+<p>
+    <img src="screens/img22.png" width="650">
+</p>
+<p>
+    <img src="screens/img23.png" width="650">
+</p>
+<p>
+    <img src="screens/img24.png" width="650">
+</p>
+
+# Видео
+
+Видео с разбором лабораторной работы - https://youtu.be/FpiSDxH4FSU

savenkov_alexander_lab_3/video-conferencing-application/.gitignore

@@ -0,0 +1,33 @@
+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/

savenkov_alexander_lab_3/video-conferencing-application/.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1,18 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.7/apache-maven-3.8.7-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.1/maven-wrapper-3.1.1.jar

savenkov_alexander_lab_3/video-conferencing-application/mvnw

@@ -0,0 +1,316 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Maven Start Up Batch script
+#
+# Required ENV vars:
+# ------------------
+#   JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+#   M2_HOME - location of maven2's installed home dir
+#   MAVEN_OPTS - parameters passed to the Java VM when running Maven
+#     e.g. to debug Maven itself, use
+#       set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+#   MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+  if [ -f /usr/local/etc/mavenrc ] ; then
+    . /usr/local/etc/mavenrc
+  fi
+
+  if [ -f /etc/mavenrc ] ; then
+    . /etc/mavenrc
+  fi
+
+  if [ -f "$HOME/.mavenrc" ] ; then
+    . "$HOME/.mavenrc"
+  fi
+
+fi
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+  MINGW*) mingw=true;;
+  Darwin*) darwin=true
+    # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
+    # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+    if [ -z "$JAVA_HOME" ]; then
+      if [ -x "/usr/libexec/java_home" ]; then
+        export JAVA_HOME="`/usr/libexec/java_home`"
+      else
+        export JAVA_HOME="/Library/Java/Home"
+      fi
+    fi
+    ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+  fi
+fi
+
+if [ -z "$M2_HOME" ] ; then
+  ## resolve links - $0 may be a link to maven's home
+  PRG="$0"
+
+  # need this for relative symlinks
+  while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+      PRG="$link"
+    else
+      PRG="`dirname "$PRG"`/$link"
+    fi
+  done
+
+  saveddir=`pwd`
+
+  M2_HOME=`dirname "$PRG"`/..
+
+  # make it fully qualified
+  M2_HOME=`cd "$M2_HOME" && pwd`
+
+  cd "$saveddir"
+  # echo Using m2 at $M2_HOME
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --unix "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME="`(cd "$M2_HOME"; pwd)`"
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+  javaExecutable="`which javac`"
+  if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
+    # readlink(1) is not available as standard on Solaris 10.
+    readLink=`which readlink`
+    if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+      if $darwin ; then
+        javaHome="`dirname \"$javaExecutable\"`"
+        javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+      else
+        javaExecutable="`readlink -f \"$javaExecutable\"`"
+      fi
+      javaHome="`dirname \"$javaExecutable\"`"
+      javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+      JAVA_HOME="$javaHome"
+      export JAVA_HOME
+    fi
+  fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+  if [ -n "$JAVA_HOME"  ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+    fi
+  else
+    JAVACMD="`\\unset -f command; \\command -v java`"
+  fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+  echo "Error: JAVA_HOME is not defined correctly." >&2
+  echo "  We cannot execute $JAVACMD" >&2
+  exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+  echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+
+  if [ -z "$1" ]
+  then
+    echo "Path not specified to find_maven_basedir"
+    return 1
+  fi
+
+  basedir="$1"
+  wdir="$1"
+  while [ "$wdir" != '/' ] ; do
+    if [ -d "$wdir"/.mvn ] ; then
+      basedir=$wdir
+      break
+    fi
+    # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+    if [ -d "${wdir}" ]; then
+      wdir=`cd "$wdir/.."; pwd`
+    fi
+    # end of workaround
+  done
+  echo "${basedir}"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+  if [ -f "$1" ]; then
+    echo "$(tr -s '\n' ' ' < "$1")"
+  fi
+}
+
+BASE_DIR=`find_maven_basedir "$(pwd)"`
+if [ -z "$BASE_DIR" ]; then
+  exit 1;
+fi
+
+##########################################################################################
+# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+# This allows using the maven wrapper in projects that prohibit checking in binary data.
+##########################################################################################
+if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Found .mvn/wrapper/maven-wrapper.jar"
+    fi
+else
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
+    fi
+    if [ -n "$MVNW_REPOURL" ]; then
+      jarUrl="$MVNW_REPOURL/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+    else
+      jarUrl="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+    fi
+    while IFS="=" read key value; do
+      case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
+      esac
+    done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Downloading from: $jarUrl"
+    fi
+    wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
+    if $cygwin; then
+      wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
+    fi
+
+    if command -v wget > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found wget ... using wget"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            wget "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
+        else
+            wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
+        fi
+    elif command -v curl > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found curl ... using curl"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            curl -o "$wrapperJarPath" "$jarUrl" -f
+        else
+            curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f
+        fi
+
+    else
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Falling back to using Java to download"
+        fi
+        javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
+        # For Cygwin, switch paths to Windows format before running javac
+        if $cygwin; then
+          javaClass=`cygpath --path --windows "$javaClass"`
+        fi
+        if [ -e "$javaClass" ]; then
+            if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Compiling MavenWrapperDownloader.java ..."
+                fi
+                # Compiling the Java class
+                ("$JAVA_HOME/bin/javac" "$javaClass")
+            fi
+            if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                # Running the downloader
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Running MavenWrapperDownloader.java ..."
+                fi
+                ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
+            fi
+        fi
+    fi
+fi
+##########################################################################################
+# End of extension
+##########################################################################################
+
+export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
+if [ "$MVNW_VERBOSE" = true ]; then
+  echo $MAVEN_PROJECTBASEDIR
+fi
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --path --windows "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+  [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+    MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
+fi
+
+# Provide a "standardized" way to retrieve the CLI args that will
+# work with both Windows and non-Windows executions.
+MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
+export MAVEN_CMD_LINE_ARGS
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+  $MAVEN_OPTS \
+  $MAVEN_DEBUG_OPTS \
+  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+  "-Dmaven.home=${M2_HOME}" \
+  "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"

savenkov_alexander_lab_3/video-conferencing-application/mvnw.cmd

@@ -0,0 +1,188 @@
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    https://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Maven Start Up Batch script
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM M2_HOME - location of maven2's installed home dir
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM     e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%USERPROFILE%\mavenrc_pre.bat" call "%USERPROFILE%\mavenrc_pre.bat" %*
+if exist "%USERPROFILE%\mavenrc_pre.cmd" call "%USERPROFILE%\mavenrc_pre.cmd" %*
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+
+FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+    IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
+)
+
+@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
+if exist %WRAPPER_JAR% (
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Found %WRAPPER_JAR%
+    )
+) else (
+    if not "%MVNW_REPOURL%" == "" (
+        SET DOWNLOAD_URL="%MVNW_REPOURL%/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+    )
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Couldn't find %WRAPPER_JAR%, downloading it ...
+        echo Downloading from: %DOWNLOAD_URL%
+    )
+
+    powershell -Command "&{"^
+		"$webclient = new-object System.Net.WebClient;"^
+		"if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
+		"$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
+		"}"^
+		"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
+		"}"
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Finished downloading %WRAPPER_JAR%
+    )
+)
+@REM End of extension
+
+@REM Provide a "standardized" way to retrieve the CLI args that will
+@REM work with both Windows and non-Windows executions.
+set MAVEN_CMD_LINE_ARGS=%*
+
+%MAVEN_JAVA_EXE% ^
+  %JVM_CONFIG_MAVEN_PROPS% ^
+  %MAVEN_OPTS% ^
+  %MAVEN_DEBUG_OPTS% ^
+  -classpath %WRAPPER_JAR% ^
+  "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" ^
+  %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%"=="" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%USERPROFILE%\mavenrc_post.bat" call "%USERPROFILE%\mavenrc_post.bat"
+if exist "%USERPROFILE%\mavenrc_post.cmd" call "%USERPROFILE%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%"=="on" pause
+
+if "%MAVEN_TERMINATE_CMD%"=="on" exit %ERROR_CODE%
+
+cmd /C exit /B %ERROR_CODE%

savenkov_alexander_lab_3/video-conferencing-application/pom.xml

@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>2.7.17</version>
+		<relativePath/>
+	</parent>
+	<groupId>com.example</groupId>
+	<artifactId>video-conferencing-application</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>video-conferencing-application</name>
+	<description>Demo project for Spring Boot</description>
+	<properties>
+		<java.version>17</java.version>
+	</properties>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-jpa</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>com.h2database</groupId>
+			<artifactId>h2</artifactId>
+			<scope>runtime</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springdoc</groupId>
+			<artifactId>springdoc-openapi-ui</artifactId>
+			<version>1.7.0</version>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

savenkov_alexander_lab_3/video-conferencing-application/src/main/java/com/example/videoconferencingapplication/Dockerfile

@@ -0,0 +1,14 @@
+# Используем базовый образ с Java и средой выполнения Spring Boot
+FROM openjdk:17-jdk-slim
+
+# Устанавливаем рабочий каталог внутри контейнера
+WORKDIR /app
+
+# Копируем JAR-файл приложения в контейнер (предполагается, что JAR-файл находится в каталоге target/)
+COPY target/video-conferencing-application-0.0.1-SNAPSHOT.jar video-conferencing-application.jar
+
+# Экспонируем порт, на котором будет работать приложение
+EXPOSE 8099
+
+# Запускаем приложение при запуске контейнера
+CMD ["java", "-jar", "video-conferencing-application.jar"]

savenkov_alexander_lab_3/video-conferencing-application/src/main/java/com/example/videoconferencingapplication/VideoConferencingApplication.java

@@ -0,0 +1,11 @@
+package com.example.videoconferencingapplication;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class VideoConferencingApplication {
+	public static void main(String[] args) {
+		SpringApplication.run(VideoConferencingApplication.class, args);
+	}
+}

savenkov_alexander_lab_3/video-conferencing-application/src/main/java/com/example/videoconferencingapplication/controller/VideoConferenceAppController.java

@@ -0,0 +1,57 @@
+package com.example.videoconferencingapplication.controller;
+
+import com.example.videoconferencingapplication.model.VideoConferenceApp;
+import com.example.videoconferencingapplication.model.VideoConferenceAppDTO;
+import com.example.videoconferencingapplication.service.VideoConferenceAppService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/video-conferencing-application")
+public class VideoConferenceAppController {
+    private final VideoConferenceAppService appService;
+
+    @Autowired
+    public VideoConferenceAppController(VideoConferenceAppService appService) {
+        this.appService = appService;
+    }
+
+    @GetMapping("/")
+    public List<VideoConferenceApp> getAllApps() {
+        return appService.getAllApps();
+    }
+
+    @GetMapping("/{uuid}")
+    public ResponseEntity<VideoConferenceApp> getAppByUuid(@PathVariable String uuid) {
+        return appService.getAppByUuid(uuid)
+                .map(app -> ResponseEntity.ok().body(app))
+                .orElse(ResponseEntity.notFound().build());
+    }
+
+    @PostMapping("/")
+    public ResponseEntity<VideoConferenceApp> createApp(@RequestBody VideoConferenceAppDTO appDTO) {
+        VideoConferenceApp createdApp = appService.createApp(appDTO);
+        return ResponseEntity.status(HttpStatus.CREATED).body(createdApp);
+    }
+
+    @PutMapping("/{uuid}")
+    public ResponseEntity<VideoConferenceApp> updateApp(@PathVariable String uuid, @RequestBody VideoConferenceAppDTO appDTO) {
+        VideoConferenceApp updatedApp = appService.updateApp(uuid, appDTO);
+        if (updatedApp != null) {
+            return ResponseEntity.ok().body(updatedApp);
+        } else {
+            return ResponseEntity.notFound().build();
+        }
+    }
+
+    @DeleteMapping("/{uuid}")
+    public ResponseEntity<Void> deleteApp(@PathVariable String uuid) {
+        boolean deleted = appService.deleteApp(uuid);
+        return deleted ? ResponseEntity.noContent().build() : ResponseEntity.notFound().build();
+    }
+}
+

savenkov_alexander_lab_3/video-conferencing-application/src/main/java/com/example/videoconferencingapplication/model/VideoConferenceApp.java

@@ -0,0 +1,73 @@
+package com.example.videoconferencingapplication.model;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "video_conference_app")
+public class VideoConferenceApp {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+    private String uuid;
+    private String name;
+    private String supportedPlatforms;
+    private int maximumParticipants;
+
+    // Конструктор по умолчанию
+    public VideoConferenceApp() {
+    }
+
+    // Конструктор для создания объекта с параметрами
+    public VideoConferenceApp(String uuid, String name, String supportedPlatforms, int maximumParticipants) {
+        this.uuid = uuid;
+        this.name = name;
+        this.supportedPlatforms = supportedPlatforms;
+        this.maximumParticipants = maximumParticipants;
+    }
+
+    // Геттеры и сеттеры для полей
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getUuid() {
+        return uuid;
+    }
+
+    public void setUuid(String uuid) {
+        this.uuid = uuid;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getSupportedPlatforms() {
+        return supportedPlatforms;
+    }
+
+    public void setSupportedPlatforms(String supportedPlatforms) {
+        this.supportedPlatforms = supportedPlatforms;
+    }
+
+    public int getMaximumParticipants() {
+        return maximumParticipants;
+    }
+
+    public void setMaximumParticipants(int maximumParticipants) {
+        this.maximumParticipants = maximumParticipants;
+    }
+}
+

savenkov_alexander_lab_3/video-conferencing-application/src/main/java/com/example/videoconferencingapplication/model/VideoConferenceAppDTO.java

@@ -0,0 +1,53 @@
+package com.example.videoconferencingapplication.model;
+
+public class VideoConferenceAppDTO {
+    private String uuid;
+    private String name;
+    private String supportedPlatforms;
+    private int maximumParticipants;
+
+    // Конструктор по умолчанию
+    public VideoConferenceAppDTO() {
+    }
+
+    // Конструктор для создания объекта с параметрами
+    public VideoConferenceAppDTO(String uuid, String name, String supportedPlatforms, int maximumParticipants) {
+        this.uuid = uuid;
+        this.name = name;
+        this.supportedPlatforms = supportedPlatforms;
+        this.maximumParticipants = maximumParticipants;
+    }
+
+    // Геттеры и сеттеры для полей
+    public String getUuid() {
+        return uuid;
+    }
+
+    public void setUuid(String uuid) {
+        this.uuid = uuid;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getSupportedPlatforms() {
+        return supportedPlatforms;
+    }
+
+    public void setSupportedPlatforms(String supportedPlatforms) {
+        this.supportedPlatforms = supportedPlatforms;
+    }
+
+    public int getMaximumParticipants() {
+        return maximumParticipants;
+    }
+
+    public void setMaximumParticipants(int maximumParticipants) {
+        this.maximumParticipants = maximumParticipants;
+    }
+}

savenkov_alexander_lab_3/video-conferencing-application/src/main/java/com/example/videoconferencingapplication/repository/VideoConferenceAppRepository.java

@@ -0,0 +1,13 @@
+package com.example.videoconferencingapplication.repository;
+
+import com.example.videoconferencingapplication.model.VideoConferenceApp;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+import java.util.Optional;
+
+@Repository
+public interface VideoConferenceAppRepository extends JpaRepository<VideoConferenceApp, Long> {
+    Optional<VideoConferenceApp> findByUuid(String uuid);
+}
+
+

savenkov_alexander_lab_3/video-conferencing-application/src/main/java/com/example/videoconferencingapplication/service/VideoConferenceAppService.java

@@ -0,0 +1,64 @@
+package com.example.videoconferencingapplication.service;
+
+import com.example.videoconferencingapplication.model.VideoConferenceApp;
+import com.example.videoconferencingapplication.model.VideoConferenceAppDTO;
+import com.example.videoconferencingapplication.repository.VideoConferenceAppRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import java.util.List;
+import java.util.Optional;
+
+@Service
+public class VideoConferenceAppService {
+    private final VideoConferenceAppRepository appRepository;
+
+    @Autowired
+    public VideoConferenceAppService(VideoConferenceAppRepository appRepository) {
+        this.appRepository = appRepository;
+    }
+
+    @Transactional
+    public List<VideoConferenceApp> getAllApps() {
+        return appRepository.findAll();
+    }
+
+    @Transactional
+    public Optional<VideoConferenceApp> getAppByUuid(String uuid) {
+        return appRepository.findByUuid(uuid);
+    }
+
+    @Transactional
+    public VideoConferenceApp createApp(VideoConferenceAppDTO appDTO) {
+        VideoConferenceApp app = new VideoConferenceApp();
+        app.setUuid(appDTO.getUuid());
+        app.setName(appDTO.getName());
+        app.setSupportedPlatforms(appDTO.getSupportedPlatforms());
+        app.setMaximumParticipants(appDTO.getMaximumParticipants());
+        return appRepository.save(app);
+    }
+
+    @Transactional
+    public VideoConferenceApp updateApp(String uuid, VideoConferenceAppDTO appDTO) {
+        Optional<VideoConferenceApp> existingApp = appRepository.findByUuid(uuid);
+        if (existingApp.isPresent()) {
+            VideoConferenceApp app = existingApp.get();
+            app.setName(appDTO.getName());
+            app.setSupportedPlatforms(appDTO.getSupportedPlatforms());
+            app.setMaximumParticipants(appDTO.getMaximumParticipants());
+            return appRepository.save(app);
+        }
+        return null;
+    }
+
+    @Transactional
+    public boolean deleteApp(String uuid) {
+        Optional<VideoConferenceApp> existingApp = appRepository.findByUuid(uuid);
+        if (existingApp.isPresent()) {
+            appRepository.delete(existingApp.get());
+            return true;
+        }
+        return false;
+    }
+}
+

savenkov_alexander_lab_3/video-conferencing-application/src/main/resources/application.properties

@@ -0,0 +1,8 @@
+spring.datasource.url=jdbc:h2:mem:testdb
+spring.datasource.driverClassName=org.h2.Driver
+spring.datasource.username=sa
+spring.datasource.password=password
+spring.jpa.hibernate.ddl-auto=update
+spring.h2.console.enabled=true
+
+server.port=8099

savenkov_alexander_lab_3/video-conferencing-application/src/test/java/com/example/videoconferencingapplication/VideoConferencingApplicationTests.java

@@ -0,0 +1,13 @@
+package com.example.videoconferencingapplication;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class VideoConferencingApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}

savenkov_alexander_lab_3/webcam-application/.gitignore

@@ -0,0 +1,33 @@
+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/

savenkov_alexander_lab_3/webcam-application/.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1,18 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.7/apache-maven-3.8.7-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.1/maven-wrapper-3.1.1.jar

savenkov_alexander_lab_3/webcam-application/mvnw

@@ -0,0 +1,316 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Maven Start Up Batch script
+#
+# Required ENV vars:
+# ------------------
+#   JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+#   M2_HOME - location of maven2's installed home dir
+#   MAVEN_OPTS - parameters passed to the Java VM when running Maven
+#     e.g. to debug Maven itself, use
+#       set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+#   MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+  if [ -f /usr/local/etc/mavenrc ] ; then
+    . /usr/local/etc/mavenrc
+  fi
+
+  if [ -f /etc/mavenrc ] ; then
+    . /etc/mavenrc
+  fi
+
+  if [ -f "$HOME/.mavenrc" ] ; then
+    . "$HOME/.mavenrc"
+  fi
+
+fi
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+  MINGW*) mingw=true;;
+  Darwin*) darwin=true
+    # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
+    # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+    if [ -z "$JAVA_HOME" ]; then
+      if [ -x "/usr/libexec/java_home" ]; then
+        export JAVA_HOME="`/usr/libexec/java_home`"
+      else
+        export JAVA_HOME="/Library/Java/Home"
+      fi
+    fi
+    ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+  fi
+fi
+
+if [ -z "$M2_HOME" ] ; then
+  ## resolve links - $0 may be a link to maven's home
+  PRG="$0"
+
+  # need this for relative symlinks
+  while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+      PRG="$link"
+    else
+      PRG="`dirname "$PRG"`/$link"
+    fi
+  done
+
+  saveddir=`pwd`
+
+  M2_HOME=`dirname "$PRG"`/..
+
+  # make it fully qualified
+  M2_HOME=`cd "$M2_HOME" && pwd`
+
+  cd "$saveddir"
+  # echo Using m2 at $M2_HOME
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --unix "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME="`(cd "$M2_HOME"; pwd)`"
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+  javaExecutable="`which javac`"
+  if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
+    # readlink(1) is not available as standard on Solaris 10.
+    readLink=`which readlink`
+    if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+      if $darwin ; then
+        javaHome="`dirname \"$javaExecutable\"`"
+        javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+      else
+        javaExecutable="`readlink -f \"$javaExecutable\"`"
+      fi
+      javaHome="`dirname \"$javaExecutable\"`"
+      javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+      JAVA_HOME="$javaHome"
+      export JAVA_HOME
+    fi
+  fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+  if [ -n "$JAVA_HOME"  ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+    fi
+  else
+    JAVACMD="`\\unset -f command; \\command -v java`"
+  fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+  echo "Error: JAVA_HOME is not defined correctly." >&2
+  echo "  We cannot execute $JAVACMD" >&2
+  exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+  echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+
+  if [ -z "$1" ]
+  then
+    echo "Path not specified to find_maven_basedir"
+    return 1
+  fi
+
+  basedir="$1"
+  wdir="$1"
+  while [ "$wdir" != '/' ] ; do
+    if [ -d "$wdir"/.mvn ] ; then
+      basedir=$wdir
+      break
+    fi
+    # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+    if [ -d "${wdir}" ]; then
+      wdir=`cd "$wdir/.."; pwd`
+    fi
+    # end of workaround
+  done
+  echo "${basedir}"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+  if [ -f "$1" ]; then
+    echo "$(tr -s '\n' ' ' < "$1")"
+  fi
+}
+
+BASE_DIR=`find_maven_basedir "$(pwd)"`
+if [ -z "$BASE_DIR" ]; then
+  exit 1;
+fi
+
+##########################################################################################
+# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+# This allows using the maven wrapper in projects that prohibit checking in binary data.
+##########################################################################################
+if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Found .mvn/wrapper/maven-wrapper.jar"
+    fi
+else
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
+    fi
+    if [ -n "$MVNW_REPOURL" ]; then
+      jarUrl="$MVNW_REPOURL/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+    else
+      jarUrl="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+    fi
+    while IFS="=" read key value; do
+      case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
+      esac
+    done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Downloading from: $jarUrl"
+    fi
+    wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
+    if $cygwin; then
+      wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
+    fi
+
+    if command -v wget > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found wget ... using wget"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            wget "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
+        else
+            wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
+        fi
+    elif command -v curl > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found curl ... using curl"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            curl -o "$wrapperJarPath" "$jarUrl" -f
+        else
+            curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f
+        fi
+
+    else
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Falling back to using Java to download"
+        fi
+        javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
+        # For Cygwin, switch paths to Windows format before running javac
+        if $cygwin; then
+          javaClass=`cygpath --path --windows "$javaClass"`
+        fi
+        if [ -e "$javaClass" ]; then
+            if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Compiling MavenWrapperDownloader.java ..."
+                fi
+                # Compiling the Java class
+                ("$JAVA_HOME/bin/javac" "$javaClass")
+            fi
+            if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                # Running the downloader
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Running MavenWrapperDownloader.java ..."
+                fi
+                ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
+            fi
+        fi
+    fi
+fi
+##########################################################################################
+# End of extension
+##########################################################################################
+
+export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
+if [ "$MVNW_VERBOSE" = true ]; then
+  echo $MAVEN_PROJECTBASEDIR
+fi
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --path --windows "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+  [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+    MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
+fi
+
+# Provide a "standardized" way to retrieve the CLI args that will
+# work with both Windows and non-Windows executions.
+MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
+export MAVEN_CMD_LINE_ARGS
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+  $MAVEN_OPTS \
+  $MAVEN_DEBUG_OPTS \
+  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+  "-Dmaven.home=${M2_HOME}" \
+  "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"

savenkov_alexander_lab_3/webcam-application/mvnw.cmd

@@ -0,0 +1,188 @@
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    https://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Maven Start Up Batch script
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM M2_HOME - location of maven2's installed home dir
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM     e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%USERPROFILE%\mavenrc_pre.bat" call "%USERPROFILE%\mavenrc_pre.bat" %*
+if exist "%USERPROFILE%\mavenrc_pre.cmd" call "%USERPROFILE%\mavenrc_pre.cmd" %*
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+
+FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+    IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
+)
+
+@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
+if exist %WRAPPER_JAR% (
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Found %WRAPPER_JAR%
+    )
+) else (
+    if not "%MVNW_REPOURL%" == "" (
+        SET DOWNLOAD_URL="%MVNW_REPOURL%/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+    )
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Couldn't find %WRAPPER_JAR%, downloading it ...
+        echo Downloading from: %DOWNLOAD_URL%
+    )
+
+    powershell -Command "&{"^
+		"$webclient = new-object System.Net.WebClient;"^
+		"if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
+		"$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
+		"}"^
+		"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
+		"}"
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Finished downloading %WRAPPER_JAR%
+    )
+)
+@REM End of extension
+
+@REM Provide a "standardized" way to retrieve the CLI args that will
+@REM work with both Windows and non-Windows executions.
+set MAVEN_CMD_LINE_ARGS=%*
+
+%MAVEN_JAVA_EXE% ^
+  %JVM_CONFIG_MAVEN_PROPS% ^
+  %MAVEN_OPTS% ^
+  %MAVEN_DEBUG_OPTS% ^
+  -classpath %WRAPPER_JAR% ^
+  "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" ^
+  %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%"=="" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%USERPROFILE%\mavenrc_post.bat" call "%USERPROFILE%\mavenrc_post.bat"
+if exist "%USERPROFILE%\mavenrc_post.cmd" call "%USERPROFILE%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%"=="on" pause
+
+if "%MAVEN_TERMINATE_CMD%"=="on" exit %ERROR_CODE%
+
+cmd /C exit /B %ERROR_CODE%

savenkov_alexander_lab_3/webcam-application/pom.xml

@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>2.7.17</version>
+		<relativePath/>
+	</parent>
+	<groupId>com.example</groupId>
+	<artifactId>webcam-application</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>webcam-application</name>
+	<description>Demo project for Spring Boot</description>
+	<properties>
+		<java.version>17</java.version>
+	</properties>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-jpa</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>com.h2database</groupId>
+			<artifactId>h2</artifactId>
+			<scope>runtime</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springdoc</groupId>
+			<artifactId>springdoc-openapi-ui</artifactId>
+			<version>1.7.0</version>
+		</dependency>
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+			<optional>true</optional>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

savenkov_alexander_lab_3/webcam-application/src/main/java/com/example/webcamapplication/Dockerfile

@@ -0,0 +1,14 @@
+# Используем базовый образ с Java и средой выполнения Spring Boot
+FROM openjdk:17-jdk-slim
+
+# Устанавливаем рабочий каталог внутри контейнера
+WORKDIR /app
+
+# Копируем JAR-файл приложения в контейнер (предполагается, что JAR-файл находится в каталоге target/)
+COPY target/webcam-application-0.0.1-SNAPSHOT.jar webcam-application.jar
+
+# Экспонируем порт, на котором будет работать приложение
+EXPOSE 8090
+
+# Запускаем приложение при запуске контейнера
+CMD ["java", "-jar", "webcam-application.jar"]

savenkov_alexander_lab_3/webcam-application/src/main/java/com/example/webcamapplication/WebcamApplication.java

@@ -0,0 +1,18 @@
+package com.example.webcamapplication;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+import org.springframework.web.client.RestTemplate;
+
+@SpringBootApplication
+public class WebcamApplication {
+	public static void main(String[] args) {
+		SpringApplication.run(WebcamApplication.class, args);
+	}
+
+	@Bean
+	public RestTemplate restTemplate() {
+		return new RestTemplate();
+	}
+}

savenkov_alexander_lab_3/webcam-application/src/main/java/com/example/webcamapplication/controller/WebcamController.java

@@ -0,0 +1,61 @@
+package com.example.webcamapplication.controller;
+
+import com.example.webcamapplication.dto.WebcamCreateUpdateDTO;
+import com.example.webcamapplication.dto.WebcamDTO;
+import com.example.webcamapplication.dto.WebcamDetailDTO;
+import com.example.webcamapplication.service.WebcamService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/webcam-application")
+public class WebcamController {
+    private final WebcamService webcamService;
+
+    @Autowired
+    public WebcamController(WebcamService webcamService) {
+        this.webcamService = webcamService;
+    }
+
+    @GetMapping("/")
+    public ResponseEntity<List<WebcamDTO>> getWebcams() {
+        List<WebcamDTO> webcams = webcamService.getAllWebcams();
+        return ResponseEntity.ok(webcams);
+    }
+
+    @GetMapping("/{uuid}")
+    public ResponseEntity<WebcamDetailDTO> getWebcam(@PathVariable String uuid) {
+        WebcamDetailDTO webcam = webcamService.getWebcamByUuid(uuid);
+        if (webcam != null) {
+            return ResponseEntity.ok(webcam);
+        }
+        return ResponseEntity.notFound().build();
+    }
+
+    @PostMapping("/")
+    public ResponseEntity<WebcamDetailDTO> createWebcam(@RequestBody WebcamCreateUpdateDTO createDTO) {
+        WebcamDetailDTO webcam = webcamService.createWebcam(createDTO);
+        return ResponseEntity.ok(webcam);
+    }
+
+    @PutMapping("/{uuid}")
+    public ResponseEntity<WebcamDetailDTO> updateWebcam(@PathVariable String uuid, @RequestBody WebcamCreateUpdateDTO updateDTO) {
+        WebcamDetailDTO webcam = webcamService.updateWebcam(uuid, updateDTO);
+        if (webcam != null) {
+            return ResponseEntity.ok(webcam);
+        }
+        return ResponseEntity.notFound().build();
+    }
+
+    @DeleteMapping("/{uuid}")
+    public ResponseEntity<Void> deleteWebcam(@PathVariable String uuid) {
+        boolean deleted = webcamService.deleteWebcam(uuid);
+        if (deleted) {
+            return ResponseEntity.ok().build();
+        }
+        return ResponseEntity.notFound().build();
+    }
+}

savenkov_alexander_lab_3/webcam-application/src/main/java/com/example/webcamapplication/docker-compose.yml

@@ -0,0 +1,31 @@
+version: '3'
+services:
+  video-conferencing-application:
+    image: fnaf459/microservice_1:1.0
+    ports:
+      - "8099:8099"
+    networks:
+      - network
+
+  webcam-application:
+    image: fnaf459/microservice_2:1.0
+    ports:
+      - "8090:8090"
+    networks:
+      - network
+
+  nginx:
+    image: nginx:latest
+    ports:
+      - "80:80"
+    networks:
+      - network
+    volumes:
+      - ./nginx.conf:/etc/nginx/nginx.conf
+    depends_on:
+      - video-conferencing-application
+      - webcam-application
+
+networks:
+  network:
+    driver: bridge

savenkov_alexander_lab_3/webcam-application/src/main/java/com/example/webcamapplication/dto/WebcamCreateUpdateDTO.java

@@ -0,0 +1,12 @@
+package com.example.webcamapplication.dto;
+
+import lombok.Data;
+
+@Data
+public class WebcamCreateUpdateDTO {
+    private String model;
+    private String resolution;
+    private String interfaceType;
+    private String subscriptionUuid;
+}
+

savenkov_alexander_lab_3/webcam-application/src/main/java/com/example/webcamapplication/dto/WebcamDTO.java

@@ -0,0 +1,14 @@
+package com.example.webcamapplication.dto;
+
+import lombok.Data;
+
+@Data
+public class WebcamDTO {
+    private String uuid;
+    private String model;
+    private String resolution;
+    private String interfaceType;
+    private String subscriptionUuid;
+}
+
+

savenkov_alexander_lab_3/webcam-application/src/main/java/com/example/webcamapplication/dto/WebcamDetailDTO.java

@@ -0,0 +1,14 @@
+package com.example.webcamapplication.dto;
+
+import lombok.Data;
+
+@Data
+public class WebcamDetailDTO {
+    private String uuid;
+    private String model;
+    private String resolution;
+    private String interfaceType;
+    private String subscriptionUuid;
+    private WebcamDetailInfoDTO subscriptionInfo;
+}
+

savenkov_alexander_lab_3/webcam-application/src/main/java/com/example/webcamapplication/dto/WebcamDetailInfoDTO.java

@@ -0,0 +1,11 @@
+package com.example.webcamapplication.dto;
+
+import lombok.Data;
+
+@Data
+public class WebcamDetailInfoDTO {
+    private String name;
+    private String supportedPlatforms;
+    private int maximumParticipants;
+}
+

savenkov_alexander_lab_3/webcam-application/src/main/java/com/example/webcamapplication/model/Webcam.java

@@ -0,0 +1,21 @@
+package com.example.webcamapplication.model;
+
+import lombok.Data;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+
+@Entity
+@Data
+public class Webcam {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+    private String uuid;
+    private String model;
+    private String resolution;
+    private String interfaceType;
+    private String subscriptionUuid;
+}
+

savenkov_alexander_lab_3/webcam-application/src/main/java/com/example/webcamapplication/nginx.conf

@@ -0,0 +1,19 @@
+events {
+    worker_connections 1024;
+}
+
+http {
+    server {
+        listen 80;
+        listen [::]:80;
+        server_name localhost;
+
+        location /video-conferencing-application/ {
+            proxy_pass http://video-conferencing-application:8099;
+        }
+
+        location /webcam-application/ {
+            proxy_pass http://webcam-application:8090;
+        }
+    }
+}

savenkov_alexander_lab_3/webcam-application/src/main/java/com/example/webcamapplication/repository/WebcamRepository.java

@@ -0,0 +1,10 @@
+package com.example.webcamapplication.repository;
+
+import com.example.webcamapplication.model.Webcam;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface WebcamRepository extends JpaRepository<Webcam, Long> {
+    Webcam findByUuid(String uuid);
+}

savenkov_alexander_lab_3/webcam-application/src/main/java/com/example/webcamapplication/service/WebcamService.java

@@ -0,0 +1,116 @@
+package com.example.webcamapplication.service;
+
+import com.example.webcamapplication.dto.WebcamCreateUpdateDTO;
+import com.example.webcamapplication.dto.WebcamDTO;
+import com.example.webcamapplication.dto.WebcamDetailDTO;
+import com.example.webcamapplication.dto.WebcamDetailInfoDTO;
+import com.example.webcamapplication.model.Webcam;
+import com.example.webcamapplication.repository.WebcamRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.web.client.RestTemplate;
+
+import java.util.List;
+import java.util.Random;
+import java.util.stream.Collectors;
+
+@Service
+public class WebcamService {
+    private final WebcamRepository webcamRepository;
+    private final RestTemplate restTemplate;
+
+    @Autowired
+    public WebcamService(WebcamRepository webcamRepository, RestTemplate restTemplate) {
+        this.webcamRepository = webcamRepository;
+        this.restTemplate = restTemplate;
+    }
+
+    public List<WebcamDTO> getAllWebcams() {
+        List<Webcam> webcams = webcamRepository.findAll();
+        return webcams.stream()
+                .map(this::convertToWebcamDTO)
+                .collect(Collectors.toList());
+    }
+
+    public WebcamDetailDTO getWebcamByUuid(String uuid) {
+        Webcam webcam = webcamRepository.findByUuid(uuid);
+        if (webcam != null) {
+            return convertToWebcamDetailDTO(webcam);
+        }
+        return null;
+    }
+
+    public WebcamDetailDTO createWebcam(WebcamCreateUpdateDTO createDTO) {
+        Webcam webcam = new Webcam();
+        webcam.setUuid(createUUID()); // Генерируйте UUID или используйте другой метод
+        updateWebcamFromDTO(webcam, createDTO);
+        webcam = webcamRepository.save(webcam);
+        return convertToWebcamDetailDTO(webcam);
+    }
+
+    public WebcamDetailDTO updateWebcam(String uuid, WebcamCreateUpdateDTO updateDTO) {
+        Webcam webcam = webcamRepository.findByUuid(uuid);
+        if (webcam != null) {
+            updateWebcamFromDTO(webcam, updateDTO);
+            webcam = webcamRepository.save(webcam);
+            return convertToWebcamDetailDTO(webcam);
+        }
+        return null;
+    }
+
+    public boolean deleteWebcam(String uuid) {
+        Webcam webcam = webcamRepository.findByUuid(uuid);
+        if (webcam != null) {
+            webcamRepository.delete(webcam);
+            return true;
+        }
+        return false;
+    }
+
+    private WebcamDTO convertToWebcamDTO(Webcam webcam) {
+        WebcamDTO dto = new WebcamDTO();
+        dto.setUuid(webcam.getUuid());
+        dto.setModel(webcam.getModel());
+        dto.setResolution(webcam.getResolution());
+        dto.setInterfaceType(webcam.getInterfaceType());
+        dto.setSubscriptionUuid(webcam.getSubscriptionUuid());
+        return dto;
+    }
+
+    private WebcamDetailDTO convertToWebcamDetailDTO(Webcam webcam) {
+        WebcamDetailDTO detailDTO = new WebcamDetailDTO();
+        detailDTO.setUuid(webcam.getUuid());
+        detailDTO.setModel(webcam.getModel());
+        detailDTO.setResolution(webcam.getResolution());
+        detailDTO.setInterfaceType(webcam.getInterfaceType());
+        detailDTO.setSubscriptionUuid(webcam.getSubscriptionUuid());
+
+        WebcamDetailInfoDTO subscriptionInfo = getSubscriptionInfo(webcam.getSubscriptionUuid());
+        detailDTO.setSubscriptionInfo(subscriptionInfo);
+
+        return detailDTO;
+    }
+
+    private void updateWebcamFromDTO(Webcam webcam, WebcamCreateUpdateDTO dto) {
+        webcam.setModel(dto.getModel());
+        webcam.setResolution(dto.getResolution());
+        webcam.setInterfaceType(dto.getInterfaceType());
+        webcam.setSubscriptionUuid(dto.getSubscriptionUuid());
+    }
+
+    private String createUUID() {
+        Random random = new Random();
+        long mostSigBits = random.nextLong();
+        long leastSigBits = random.nextLong();
+        return String.format("%08x-%04x-%04x-%04x-%012x",
+                mostSigBits >>> 32, (mostSigBits >>> 16) & 0xFFFF, mostSigBits & 0xFFFF,
+                (leastSigBits >>> 16) & 0xFFFF, leastSigBits & 0xFFFF);
+    }
+
+
+    private WebcamDetailInfoDTO getSubscriptionInfo(String subscriptionUuid) {
+        String subscriptionInfoUrl = "http://nginx/video-conferencing-application/" + subscriptionUuid;
+        return restTemplate.getForObject(subscriptionInfoUrl, WebcamDetailInfoDTO.class);
+    }
+}
+

savenkov_alexander_lab_3/webcam-application/src/main/resources/application.properties

@@ -0,0 +1,9 @@
+spring.datasource.url=jdbc:h2:mem:testdb
+spring.datasource.driverClassName=org.h2.Driver
+spring.datasource.username=sa
+spring.datasource.password=password
+spring.jpa.hibernate.ddl-auto=update
+spring.h2.console.enabled=true
+
+server.port=8090
+

savenkov_alexander_lab_3/webcam-application/src/test/java/com/example/webcamapplication/WebcamApplicationTests.java

@@ -0,0 +1,13 @@
+package com.example.webcamapplication;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class WebcamApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}