OTRS implementation

We'll create the multi-module Maven project for implementing OTRS. The following stack would be used to develop the OTRS application. Please note that at the time of writing this book, only the snapshot build of Spring Boot and Cloud was available. Therefore, in the final release, one or two things may change:

• Java version 1.11
• Spring Boot 2.1.0.M4
• Spring Cloud Finchley.SR1
• Maven version 3.3.9
• Maven Compiler Plugin (for Java 11) with 6.2 version of org.ow2.asm

All the preceding points are mentioned in the root pom.xml file, along with the following OTRS modules:

• restaurant-service
• user-service
• booking-service

The root pom.xml file will look something like this:

...

  <groupId>com.packtpub.mmj</groupId>
  <artifactId>11537_chapter4</artifactId>
  <version>PACKT-SNAPSHOT</version>
  <name>Chapter4</name>
  <description>Master Microservices with Java 11, Chapter 4</description>
  <packaging>pom</packaging>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.11</java.version>
    <maven.compiler.source>11</maven.compiler.source>
    <maven.compiler.target>11</maven.compiler.target>
  </properties>

  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.0.M4</version>
  </parent>
  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-dependencies</artifactId>
        <version>Finchley.SR1</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>
    </dependencies>
  </dependencyManagement>

  <modules>
    <module>restaurant-service</module>
    <module>user-service</module>
    <module>booking-service</module>
  </modules>

  <!-- Build step is required to include the spring boot artifacts in generated jars -->
  <build>
    <finalName>${project.artifactId}</finalName>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <configuration>
          <release>11</release>
          <source>1.11</source>
          <target>1.11</target>
          <executable>${JAVA_1_11_HOME}/bin/javac</executable>
          <showDeprecation>true</showDeprecation>
          <showWarnings>true</showWarnings>
        </configuration>
        <dependencies>
          <dependency>
            <groupId>org.ow2.asm</groupId>
            <artifactId>asm</artifactId>
            <version>6.2</version> <!-- Use newer version of ASM -->
          </dependency>
        </dependencies>
      </plugin>
    </plugins>
  </build>
...
...
</project>

We are developing REST-based microservices. We'll implement the restaurant module. The booking and user modules are developed on similar lines.