feat: technical challenge solution - Java backend

.gitignore

@@ -5,6 +5,14 @@ npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
 lerna-debug.log*
+target/
+*.jar
+*.war
+.idea/
+*.iml
+.settings/
+.classpath
+.project
 
 # Diagnostic reports (https://nodejs.org/api/report.html)
 report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json

antifraud-service/.gitattributes

@@ -0,0 +1,2 @@
+/mvnw text eol=lf
+*.cmd text eol=crlf

antifraud-service/.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/

antifraud-service/.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1,3 @@
+wrapperVersion=3.3.4
+distributionType=only-script
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.12/apache-maven-3.9.12-bin.zip

antifraud-service/Dockerfile

@@ -0,0 +1,20 @@
+FROM maven:3.9.6-eclipse-temurin-17 AS builder
+WORKDIR /app
+
+COPY pom.xml .
+COPY common/pom.xml common/pom.xml
+COPY transaction-service/pom.xml transaction-service/pom.xml
+COPY antifraud-service/pom.xml antifraud-service/pom.xml
+
+RUN mvn dependency:go-offline -pl antifraud-service -am -q
+
+COPY common/src common/src
+COPY antifraud-service/src antifraud-service/src
+
+RUN mvn clean package -pl antifraud-service -am -DskipTests -q
+
+FROM eclipse-temurin:17-jre-alpine
+WORKDIR /app
+COPY --from=builder /app/antifraud-service/target/*.jar app.jar
+EXPOSE 8084
+ENTRYPOINT ["java", "-jar", "app.jar"]