Merge pull request #7 from glours/update_spring_example

Update spring-postgresql example

samples/spring-postgres/backend/Dockerfile

@@ -1,12 +1,20 @@
-FROM maven:3.5-jdk-9 AS build
-COPY pom.xml .
-RUN mvn --batch-mode dependency:resolve
-COPY . .
-RUN mvn --batch-mode package
-RUN cp target/*jar target/app.jar
+FROM maven:3.6.3-jdk-11 AS builder
+WORKDIR /workdir/server
+COPY pom.xml /workdir/server/pom.xml
+RUN mvn dependency:go-offline
+
+COPY src /workdir/server/src
+RUN mvn install
+RUN mkdir  -p target/depency
+WORKDIR /workdir/server/target/dependency
+RUN jar -xf ../*.jar
+
+FROM openjdk:11-jre-slim
 
-FROM openjdk:9-jre
 EXPOSE 8080
 VOLUME /tmp
-COPY --from=build target/app.jar app.jar
-ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]
+ARG DEPENDENCY=/workdir/server/target/dependency
+COPY --from=builder ${DEPENDENCY}/BOOT-INF/lib /app/lib
+COPY --from=builder ${DEPENDENCY}/META-INF /app/META-INF
+COPY --from=builder ${DEPENDENCY}/BOOT-INF/classes /app
+ENTRYPOINT ["java","-cp","app:app/lib/*","com.company.project.Application"]

samples/spring-postgres/backend/pom.xml

@@ -14,24 +14,37 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.0.3.RELEASE</version>
+        <version>2.2.5.RELEASE</version>
         <relativePath/>
     </parent>
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <java.version>1.8</java.version>
+        <java.version>11</java.version>
     </properties>
 
     <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-freemarker</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-jersey</artifactId>
         </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-web</artifactId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.postgresql</groupId>
+            <artifactId>postgresql</artifactId>
+            <scope>runtime</scope>
         </dependency>
         <dependency>
             <groupId>org.springframework.session</groupId>
@@ -40,26 +53,22 @@
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-devtools</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-freemarker</artifactId>
+            <scope>runtime</scope>
+            <optional>true</optional>
         </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>javax.xml.bind</groupId>
-            <artifactId>jaxb-api</artifactId>
-            <version>2.3.0</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>org.junit.vintage</groupId>
+                    <artifactId>junit-vintage-engine</artifactId>
+                </exclusion>
+            </exclusions>
         </dependency>
     </dependencies>
+
     <build>
         <plugins>
             <plugin>

samples/spring-postgres/backend/src/main/java/com/company/project/controllers/HomeController.java

@@ -1,15 +1,22 @@
 package com.company.project.controllers;
 
+import com.company.project.entity.Greeting;
+import com.company.project.repository.GreetingRepository;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestParam;
 
 @Controller
 public class HomeController {
 
+    @Autowired
+    private GreetingRepository repository;
+
     @GetMapping("/")
     public String showHome(String name, Model model) {
+        Greeting dockerGreeting = repository.findById(1).orElse(new Greeting("Not Found 😕"));
+        model = model.addAttribute("name", dockerGreeting.getName());
         return "home";
     }
 

samples/spring-postgres/backend/src/main/java/com/company/project/entity/Greeting.java

@@ -0,0 +1,57 @@
+package com.company.project.entity;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "GREETINGS")
+public class Greeting {
+
+    @Id
+    private int id;
+    private String name;
+
+    public Greeting() {
+    }
+
+    public Greeting(String name) {
+        this.name = name;
+    }
+
+    public Greeting(int id, String name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+
+        Greeting greeting = (Greeting) o;
+
+        return name.equals(greeting.name);
+    }
+
+    @Override
+    public int hashCode() {
+        return name.hashCode();
+    }
+}

samples/spring-postgres/backend/src/main/java/com/company/project/repository/GreetingRepository.java

@@ -0,0 +1,9 @@
+package com.company.project.repository;
+
+import com.company.project.entity.Greeting;
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface GreetingRepository extends CrudRepository<Greeting, Integer> {
+}

samples/spring-postgres/backend/src/main/resources/application.properties

@@ -1 +1,11 @@
+spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.PostgreSQLDialect
+spring.jpa.hibernate.ddl-auto=none
+spring.jpa.hibernate.show-sql=true
 
+spring.datasource.url=jdbc:postgresql://db:5432/${POSTGRES_DB}
+spring.datasource.username=postgres
+spring.datasource.password=${POSTGRES_PASSWORD:db-wrz2z}
+spring.datasource.initialization-mode=always
+spring.datasource.initialize=true
+spring.datasource.schema=classpath:/schema.sql
+spring.datasource.continue-on-error=true

samples/spring-postgres/backend/src/main/resources/data.sql

@@ -0,0 +1 @@
+INSERT INTO GREETINGS(name) values ('Docker');

samples/spring-postgres/backend/src/main/resources/schema.sql

@@ -0,0 +1,4 @@
+CREATE TABLE IF NOT EXISTS GREETINGS (
+    id serial PRIMARY KEY,
+    name varchar(50) NOT NULL
+);

samples/spring-postgres/backend/src/main/resources/templates/home.ftlh

@@ -5,5 +5,5 @@
   <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
 </head>
 <body>
-	<p>Hello from Docker!</p>
+	<p>Hello from ${name}!</p>
 </body>

samples/spring-postgres/docker-compose.yaml

@@ -4,6 +4,10 @@ services:
     build: backend
     ports:
     - 80:8080
+    environment:
+      POSTGRES_DB: example
+    networks:
+      - spring-postges
   db:
     environment:
       POSTGRES_DB: example
@@ -14,8 +18,12 @@ services:
     - db-password
     volumes:
     - db-data:/var/lib/postgresql/data
+    networks:
+      - spring-postges
 volumes:
   db-data: {}
 secrets:
   db-password:
     file: db/password.txt
+networks:
+  spring-postges: {}