Welcome to Trampoline.

Are you developing an application based on the paradigm of microservices using Spring Boot? Are you tired of that set of scripts? Relax, Trampoline has come into your life.

The aim is to help during the course of developing an application based on the paradigm of microservices with Spring Boot. How? Easy, thanks to a comfortable interface you can declare new microservices, start instances and kill them.

Also you will be able to:

• Use configurable Actuator Endpoints and VM arguments
• Monitor memory usage for each instance, capturing their metrics every 30 seconds
• Monitor instances and trace information at any point in time
• See Git branch and last commit on instances
• Checkout branch, pull code and restart instances with a single mouse click
• Define microservices groups and launch them all with one click

• Java and Apache Maven or Gradle Wrapper
• Include your Gradle Wrapper next to your build files if your choice is Gradle as a Build Tool
• Include Spring Boot Actuator in your microservices
• Set up logging.path and/or logging.file properties in your microservices in order to be able to visualize logs
• Set up Git Info plugin in your microservices to see Git information on deployed instances (see examples provided)

1. With the Trampoline project checked out go to the trampoline sub-folder
2. Now start trampoline, for instance with the well known commands mvn spring-boot:run or ./gradlew (or gradlew.bat) bootRun
3. Once started go to localhost:8080
4. If using Apache Maven then be sure to enter the path to your installation here
5. Go to the Settings Section and add all your microservices
6. Finally you just have to start your instances in the Instances Section

• What does the UI look like?

• Which build tools are Trampoline compatible with in my microservices?

You can use Apache Maven or Gradle Wrapper.

• Can I run it on any OS?

Theoretically yes, but it has only been fully tested on Windows and Mac OS.

• I am working with Spring Boot 1.3 or less and instances do not start

You should add security starter to your microservices pom.xml:

<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-security</artifactId>
</dependency>

• What are the plugins I should use to retrieve Git information?

"gradle.plugin.com.gorylenko.gradle-git-properties:gradle-git-properties:1.4.17"

<plugin>
	<groupId>pl.project13.maven</groupId>
	<artifactId>git-commit-id-plugin</artifactId>
	<version>2.2.3</version>
</plugin>

• TransportException: .git: Authentication is required but no CredentialsProvider has been registered]

If you don't have git in your local machine you can easily solve it by adding credentials on FetchCommand and PullCommands on GitManager like this:

git.fetch().setCredentialsProvider(new UsernamePasswordCredentialsProvider( "user", "password" ) ).setRemoveDeletedRefs(true).call();

git.pull().setCredentialsProvider(new UsernamePasswordCredentialsProvider( "user", "password" ) ).call();

Of course, you will have to place your user and password.

• Will I have to enter data all the time?

No, information introduced will be stored in a settings file along with scripts to launch each microservice 😁. These files are stored in a trampoline folder inside your Documents folder on Mac and Linux or inside the Temp folder on Windows.

Start with clicking the star button to make the author and his neighbors happy 😊. Then fork the repository and submit a pull request for whatever change you want to be added to this project.

If you have any questions, just open an issue.