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Added Docker Compose for API GATEWAY service. We generated docker image by "Google Container Tools". We used github repository for our configuration by config-server.
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‎api-gateway/.gitignore

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

‎api-gateway/README.md

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# Java Microservices - API Gateway
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## Dependencies
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* Linux, VirtualBox or Docker Desktop
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* Java 11
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* Maven
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* Git Config Server Repository
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* Spring Boot : 2.3.11.RELEASE
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* Spring Cloud Api Gateway
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* Netflix Eureka Client
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* Netflix Hystrix
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* Google Container Tools
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## Configuration
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src/main/docker/app.yml
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```yaml
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version: '3.8'
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services:
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api-gateway:
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image: cevheri/api-gateway
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environment:
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- _JAVA_OPTIONS=-Xmx512m -Xms256m
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ports:
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- 9191:9191
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```
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We will use github public repository for our configuration:
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https://github.com/cevheri/microservices-config-server
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---
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## Development
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```shell
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$ ./mvnw package
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$ java -jar target/*.jar
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```
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Visit : http://localhost:8761/eureka/apps/api-gateway
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---
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## Production With Docker
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We will create Docker Image using Google Container Tools and run this Docker Image with Docker Compose.
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### Build docker image:
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```shell
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$ ./mvnw -Pprod clean verify jib:dockerBuild
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...
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[INFO] Executing tasks:
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[INFO] [==============================] 100.0% complete
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[INFO]
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[INFO] ------------------------------------------------------------------------
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[INFO] BUILD SUCCESS
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[INFO] ------------------------------------------------------------------------
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[INFO] Total time: 17.728 s
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[INFO] Finished at: 21:45:11+03:00
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[INFO] ------------------------------------------------------------------------
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```
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---
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### Run:
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```shell
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$ docker-compose -f src/main/docker/app.yml up -d
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Creating api-gateway ... done
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```
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---
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Visit : http://localhost:8761/eureka/apps/api-gateway
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```xml
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<application>
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<name>API-GATEWAY</name>
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<instance>
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<instanceId>192.168.1.57:api-gateway:9191</instanceId>
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<hostName>service-registry</hostName>
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<app>API-GATEWAY</app>
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<ipAddr>192.168.1.57</ipAddr>
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<status>UP</status>
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...
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...
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</instance>
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</application>
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```
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---
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### View docker images:
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```shell
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$ docker images
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REPOSITORY TAG IMAGE ID CREATED SIZE
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cevheri/api-gateway latest 57a100df8bcd 26 minutes ago 287MB
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```
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### View docker containers:
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````shell
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$ docker ps
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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2ca74578a26c cevheri/api-gateway "bash -c /entrypoint…" 8 seconds ago Up 6 seconds 0.0.0.0:9191->9191/tcp, :::9191->9191/tcp api-gateway
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````
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### Stop Docker Compose:
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```shell
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$ docker-compose -f src/main/docker/app.yml down
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```
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‎api-gateway/pom.xml

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<properties>
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<java.version>11</java.version>
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<spring-cloud.version>Hoxton.SR11</spring-cloud.version>
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<jib-maven-plugin.version>2.8.0</jib-maven-plugin.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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</plugin>
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<plugin>
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<groupId>com.google.cloud.tools</groupId>
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<artifactId>jib-maven-plugin</artifactId>
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</plugin>
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</plugins>
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<pluginManagement>
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<plugins>
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<plugin>
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<groupId>com.google.cloud.tools</groupId>
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<artifactId>jib-maven-plugin</artifactId>
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<version>${jib-maven-plugin.version}</version>
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<configuration>
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<from>
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<image>adoptopenjdk:11-jre-hotspot</image>
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</from>
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<to>
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<image>cevheri/api-gateway:latest</image>
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</to>
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<container>
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<entrypoint>
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<shell>bash</shell>
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<option>-c</option>
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<arg>/entrypoint.sh</arg>
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</entrypoint>
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<ports>
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<port>9191</port>
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</ports>
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<environment>
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<SPRING_OUTPUT_ANSI_ENABLED>ALWAYS</SPRING_OUTPUT_ANSI_ENABLED>
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<APP_SLEEP>0</APP_SLEEP>
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</environment>
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<creationTime>USE_CURRENT_TIMESTAMP</creationTime>
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<user>1000</user>
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</container>
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<extraDirectories>
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<paths>src/main/docker/jib</paths>
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<permissions>
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<permission>
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<file>/entrypoint.sh</file>
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<mode>755</mode>
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</permission>
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</permissions>
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</extraDirectories>
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</configuration>
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</plugin>
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</plugins>
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</pluginManagement>
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</build>
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</project>

‎api-gateway/src/main/docker/app.yml

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version: '3.8'
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services:
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api-gateway:
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image: cevheri/api-gateway
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environment:
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- _JAVA_OPTIONS=-Xmx512m -Xms256m
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ports:
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- 9191:9191
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zipkin:
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image: openzipkin/zipkin
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ports:
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- 9411:9411

‎api-gateway/src/main/docker/jib/entrypoint.sh

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#!/bin/sh
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exec java ${JAVA_OPTS} -noverify -XX:+AlwaysPreTouch -Djava.security.egd=file:/dev/./urandom -cp /app/resources/:/app/classes/:/app/libs/* "com.cevher.ms.apigateway.APIGatewayApplication" "$@"

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