Added support of GCP CLoud SQL

Dockerfile

@@ -0,0 +1,21 @@
+# First stage: Build the application with Maven
+FROM maven:3.8.4-openjdk-17 AS build
+WORKDIR /app
+COPY pom.xml .
+COPY src ./src
+RUN mvn clean package -DskipTests
+
+# Second stage: Download New Relic Java APM agent
+FROM alpine:3.14 AS newrelic
+WORKDIR /newrelic
+RUN wget https://download.newrelic.com/newrelic/java-agent/newrelic-agent/current/newrelic-java.zip && \
+    unzip newrelic-java.zip
+
+# Third stage: Copy artifacts to the distroless JRE image and run them
+FROM gcr.io/distroless/java17-debian11
+WORKDIR /app
+USER root
+COPY --from=build /app/target/spring-petclinic.jar /app/spring-petclinic.jar
+COPY --from=newrelic /newrelic/newrelic/ /newrelic/
+ENV NEW_RELIC_APP_NAME=petclinic
+ENTRYPOINT ["java", "-javaagent:/newrelic/newrelic.jar", "-jar", "/app/spring-petclinic.jar"]

pom.xml

@@ -88,6 +88,11 @@
       <artifactId>mysql-connector-j</artifactId>
       <scope>runtime</scope>
     </dependency>
+    <dependency>
+      <groupId>com.google.cloud.sql</groupId>
+      <artifactId>postgres-socket-factory</artifactId>
+      <version>1.21.2</version>
+    </dependency>
     <dependency>
       <groupId>org.postgresql</groupId>
       <artifactId>postgresql</artifactId>
@@ -155,6 +160,7 @@
   </dependencies>
 
   <build>
+    <finalName>${project.artifactId}</finalName>
     <plugins>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>

src/main/resources/application-cloudsql.yml

@@ -0,0 +1,19 @@
+database: postgres
+spring:
+  sql:
+    init:
+      mode: always
+  cloud:
+    gcp:
+      sql:
+        database-name: ${DB_NAME}
+        enable-iam-auth: true
+        instance-connection-name: ${INSTANCE_CONNECTION_NAME}
+        sslmode: disable
+  datasource:
+    url: jdbc:postgresql:///${DB_NAME}?socketFactory=com.google.cloud.sql.postgres.SocketFactory&cloudSqlInstance=${INSTANCE_CONNECTION_NAME}&enableIamAuth=true&user=${DB_USER}&password=dummy&sslmode=disable
+    username: ${DB_USER}
+  jpa:
+    hibernate:
+      ddl-auto: update
+    show-sql: true

src/main/resources/application.properties

@@ -23,3 +23,6 @@ logging.level.org.springframework=INFO
 
 # Maximum time static resources should be cached
 spring.web.resources.cache.cachecontrol.max-age=12h
+
+# In the last line, add mysql to the spring.profiles.active property
+spring.profiles.active=cloudsql