Add sonarcloud scan for backend

.github/workflows/sonar-backend.yml

@@ -0,0 +1,37 @@
+name: SonarCloud
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    types: [opened, synchronize, reopened]
+jobs:
+  build:
+    name: Build and analyze
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0  # Shallow clones should be disabled for a better relevancy of analysis
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          java-version: 17
+          distribution: 'zulu' # Alternative distribution options are available
+      - name: Cache SonarCloud packages
+        uses: actions/cache@v4
+        with:
+          path: ~/.sonar/cache
+          key: ${{ runner.os }}-sonar
+          restore-keys: ${{ runner.os }}-sonar
+      - name: Cache Gradle packages
+        uses: actions/cache@v4
+        with:
+          path: ~/.gradle/caches
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}
+          restore-keys: ${{ runner.os }}-gradle
+      - name: Build and analyze
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}  # Needed to get PR information, if any
+          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
+        run: ./gradlew build sonar --info

backend/build.gradle.kts

@@ -3,6 +3,7 @@ plugins {
   kotlin("plugin.spring") version "2.0.20"
   id("org.springframework.boot") version "3.3.3"
   id("io.spring.dependency-management") version "1.1.6"
+  id("org.sonarqube") version "4.4.1.3373"
 }
 
 group = "hu.bme.sch"
@@ -24,6 +25,14 @@ repositories {
   mavenCentral()
 }
 
+sonar {
+  properties {
+    property("sonar.projectKey", "simonyiszk_paybasz-next-backend")
+    property("sonar.organization", "simonyiszk")
+    property("sonar.host.url", "https://sonarcloud.io")
+  }
+}
+
 extra["springModulithVersion"] = "1.2.3"
 
 dependencies {