Demo 2: Docker-compose

builder.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+DOCKER_USER_HOME=/home/user
+CACHED_VOLUMES="m2 groovy grails gradle"
+
+function get_cached_volumes {
+    volumes_str=""
+    for v in $CACHED_VOLUMES; do
+        volumes_str+="-v $HOME/.$v:$DOCKER_USER_HOME/.$v "
+    done
+    echo $volumes_str
+}
+
+docker run -it --rm \
+    -v `pwd`:$DOCKER_USER_HOME/work \
+    `get_cached_volumes` \
+    --entrypoint /home/user/entrypoint.sh \
+    -v /var/run/docker.sock:/var/run/docker.sock \
+    reverse-app/builder $1

consumer/build.gradle

@@ -15,7 +15,6 @@ group "consumer"
 
 apply plugin:"eclipse"
 apply plugin:"idea"
-apply plugin:"war"
 apply plugin:"org.grails.grails-web"
 apply plugin:"org.grails.plugins.views-json"
 
@@ -68,4 +67,10 @@ dependencies {
 
 bootRun {
     jvmArgs = ['-Dspring.output.ansi.enabled=always']
+}
+
+task prepareDocker(type: Copy, dependsOn: build) {
+    from file('src/main/docker/Dockerfile')
+    from project.jar
+    into "${buildDir}/docker"
 }

consumer/grails-app/conf/application.groovy

@@ -1,11 +1,29 @@
+environments {
+    development {
+        rabbitmq {
+            connections = [
+                [
+                    host    : 'localhost',
+                    username: 'guest',
+                    password: 'guest'
+                ]
+            ]
+        }
+    }
+    production {
+        rabbitmq {
+            connections = [
+                [
+                    host    : 'rabbitmq',
+                    username: 'guest',
+                    password: 'guest'
+                ]
+            ]
+        }
+    }
+}
+
 rabbitmq {
-    connections = [
-        [
-            host: 'localhost',
-            username: 'guest',
-            password: 'guest'
-        ]
-    ]
     queues = [
         [
             name: 'reverse',

consumer/grails-app/conf/application.yml

@@ -90,23 +90,7 @@ environments:
             url: jdbc:h2:mem:testDb;MVCC=TRUE;LOCK_TIMEOUT=10000;DB_CLOSE_ON_EXIT=FALSE
     production:
         dataSource:
-            dbCreate: none
-            url: jdbc:h2:./prodDb;MVCC=TRUE;LOCK_TIMEOUT=10000;DB_CLOSE_ON_EXIT=FALSE
-            properties:
-                jmxEnabled: true
-                initialSize: 5
-                maxActive: 50
-                minIdle: 5
-                maxIdle: 25
-                maxWait: 10000
-                maxAge: 600000
-                timeBetweenEvictionRunsMillis: 5000
-                minEvictableIdleTimeMillis: 60000
-                validationQuery: SELECT 1
-                validationQueryTimeout: 3
-                validationInterval: 15000
-                testOnBorrow: true
-                testWhileIdle: true
-                testOnReturn: false
-                jdbcInterceptors: ConnectionState
-                defaultTransactionIsolation: 2 # TRANSACTION_READ_COMMITTED
+            dbCreate: create-drop
+            url: jdbc:postgresql://postgresql:5432/reverseapp
+            username: reverseuser
+            password: reversepass

consumer/src/main/docker/Dockerfile

@@ -0,0 +1,14 @@
+FROM openjdk:8u111-jdk
+
+VOLUME /tmp
+
+RUN groupadd -r user && useradd -r -g user user
+
+COPY consumer-0.1.jar /app/consumer.jar
+RUN bash -c 'touch /app/consumer.jar'
+RUN chown -R user:user /app
+
+USER user
+WORKDIR /app
+
+CMD ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app/consumer.jar"]

docker/02_docker-compose/builder/Dockerfile

@@ -0,0 +1,27 @@
+FROM openjdk:8u111-jdk
+
+# Locale setup
+RUN apt-get update && \
+    apt-get install -yq locales ca-certificates wget sudo && \
+    rm -rf /var/lib/apt/lists/* && \
+    localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
+ENV LANG en_US.UTF-8
+ENV LC_ALL en_US.UTF-8
+
+# Docker
+RUN echo 'deb http://httpredir.debian.org/debian jessie-backports main' > /etc/apt/sources.list.d/jessie-backports.list && \
+    apt-get update && apt-get install -yq docker.io && \
+    rm -rf /var/lib/apt/lists/*
+
+# Add user
+RUN useradd user -d /home/user -s /bin/bash && \
+    cp -r /etc/skel /home/user && \
+    chown user.user -R /home/user && \
+    echo "user ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
+
+USER user
+WORKDIR /home/user
+
+COPY files/entrypoint.sh /home/user/
+COPY files/postgresql /home/user/postgresql
+COPY files/rabbitmq /home/user/rabbitmq

docker/02_docker-compose/builder/build-image.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+docker build -t reverse-app/builder .

docker/02_docker-compose/builder/files/entrypoint.sh

@@ -0,0 +1,58 @@
+#!/bin/bash
+
+function build-postgresql {
+    echo "##########################"
+    echo "# Building postgresql... #"
+    echo "##########################"
+    sudo docker build -t reverse-app/postgresql ./postgresql/
+}
+
+function build-rabbitmq {
+    echo "########################"
+    echo "# Building rabbitmq... #"
+    echo "########################"
+    sudo docker build -t reverse-app/rabbitmq ./rabbitmq/
+}
+
+
+function build-producer {
+    echo "########################"
+    echo "# Building producer... #"
+    echo "########################"
+    (cd work/producer && ./gradlew clean build prepareDocker && \
+        sudo docker build -t reverse-app/producer ./build/docker/)
+}
+
+function build-consumer {
+    echo "########################"
+    echo "# Building consumer... #"
+    echo "########################"
+    (cd work/consumer && ./gradlew clean build prepareDocker && \
+        sudo docker build -t reverse-app/consumer ./build/docker/)
+}
+
+
+case $1 in
+    postgresql)
+        build-postgresql
+        ;;
+    rabbitmq)
+        build-rabbitmq
+        ;;
+    producer)
+        build-producer
+        ;;
+    consumer)
+        build-consumer
+        ;;
+    all)
+        build-postgresql
+        build-rabbitmq
+        build-producer
+        build-consumer
+        ;;
+    *)
+        echo "USAGE: $0 [ postgresql | rabbitmq | producer | consumer | all ]"
+        exit 1
+        ;;
+esac

docker/02_docker-compose/builder/files/postgresql/Dockerfile

@@ -0,0 +1,7 @@
+FROM postgres:9.4.9
+
+VOLUME /var/lib/postgresql/data
+
+COPY ["setup.sh", "/docker-entrypoint-initdb.d/"]
+
+EXPOSE 5432

docker/02_docker-compose/builder/files/postgresql/setup.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+echo "######### CREATING DATABASE ##########"
+
+# Perform all actions as user 'postgres'
+export PGUSER=postgres
+
+# Create the reverse-app user and database
+psql <<EOSQL
+    CREATE DATABASE reverseapp;
+    CREATE ROLE reverseuser WITH LOGIN PASSWORD 'reversepass';
+    GRANT ALL PRIVILEGES ON DATABASE reverseapp TO reverseuser;
+EOSQL
+
+echo ""
+echo "######### DATABASE CREATED ##########"

docker/02_docker-compose/builder/files/rabbitmq/Dockerfile

@@ -0,0 +1,5 @@
+FROM rabbitmq:3.6.5-management
+
+RUN rabbitmq-plugins enable --offline rabbitmq_management
+
+EXPOSE 15672

docker/02_docker-compose/docker-compose/docker-compose.yml

@@ -0,0 +1,20 @@
+version: '2'
+services:
+  postgresql:
+    image: reverse-app/postgresql
+
+  rabbitmq:
+    image: reverse-app/rabbitmq
+
+  producer:
+    image: reverse-app/producer
+    ports:
+      - "8080:8080"
+    links:
+      - rabbitmq:rabbitmq
+
+  consumer:
+    image: reverse-app/consumer
+    links:
+      - rabbitmq:rabbitmq
+      - postgresql:postgresql

producer/build.gradle

@@ -15,7 +15,6 @@ group "producer"
 
 apply plugin:"eclipse"
 apply plugin:"idea"
-apply plugin:"war"
 apply plugin:"org.grails.grails-web"
 apply plugin:"org.grails.grails-gsp"
 apply plugin:"asset-pipeline"
@@ -65,3 +64,9 @@ assets {
     minifyJs = true
     minifyCss = true
 }
+
+task prepareDocker(type: Copy, dependsOn: build) {
+    from file('src/main/docker/Dockerfile')
+    from project.jar
+    into "${buildDir}/docker"
+}

producer/grails-app/conf/application.groovy

@@ -1,11 +1,29 @@
+environments {
+    development {
+        rabbitmq {
+            connections = [
+                [
+                    host    : 'localhost',
+                    username: 'guest',
+                    password: 'guest'
+                ]
+            ]
+        }
+    }
+    production {
+        rabbitmq {
+            connections = [
+                [
+                    host    : 'rabbitmq',
+                    username: 'guest',
+                    password: 'guest'
+                ]
+            ]
+        }
+    }
+}
+
 rabbitmq {
-    connections = [
-        [
-            host: 'localhost',
-            username: 'guest',
-            password: 'guest'
-        ]
-    ]
     exchanges = [
         [
             name: 'exchange.reverse',

producer/src/main/docker/Dockerfile

@@ -0,0 +1,14 @@
+FROM openjdk:8u111-jdk
+
+VOLUME /tmp
+
+RUN groupadd -r user && useradd -r -g user user
+
+COPY producer-0.1.jar /app/producer.jar
+RUN bash -c 'touch /app/producer.jar'
+RUN chown -R user:user /app
+
+USER user
+WORKDIR /app
+
+CMD ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app/producer.jar"]