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resilience4j-spring-boot2-demo

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A Spring Boot 2 demo which shows how to use the Resilience4j Spring Boot 2 Starter

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Download Latest Version (.zip)

- - gradle-build.yml
  - gradle-wrapper-validation.yml
- dependabot.yml
- dashboard.json
- grafana.env
- prometheus-desktop.yml
- prometheus.yml
- - gradle-wrapper.jar
  - gradle-wrapper.properties
.gitignore
build.gradle.kts
docker-compose-desktop.yml
docker-compose.yml
Dockerfile
gradlew
gradlew.bat
LICENSE.txt
README.md

# Installation Guide

1. Get the code

git clone https://github.com/resilience4j/resilience4j-spring-boot2-demo

Downloads the entire project code from GitHub to your computer.

cd resilience4j-spring-boot2-demo

Moves into the project folder you just downloaded.

2. Docker

Easy Recommended

Prerequisites

Git Needed to download the project code from GitHub.
Docker Desktop Needed to build and run containers. Install it and keep it running in the background.

docker-compose -f docker-compose.yml up

Runs the command against the services defined in the compose file.

- Upload dashboard.json from /docker

Type this command into your terminal and run it.

✅ Run docker compose ps to check the containers are Up. If the README mentions a port, open http://localhost:PORT in your browser.

Pulled directly from this repo's README.

3. Gradle (Java/Kotlin)

Medium

Prerequisites

Git Needed to download the project code from GitHub.
JDK (Java) Required to build and run Java/Kotlin projects.
Gradle If the repo includes gradlew (Gradle Wrapper), you don't need to install Gradle separately.

./gradlew build

Builds the project using Gradle.

✅ A BUILD SUCCESSFUL message means it worked. The output is created under build/.

// repository documentation

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# Spring Boot 2 demo of Resilience4j

![Gradle Wrapper Status](https://github.com/resilience4j/resilience4j-spring-boot2-demo/actions/workflows/gradle-wrapper-validation.yml/badge.svg)
![Build Status](https://github.com/resilience4j/resilience4j-spring-boot2-demo/actions/workflows/gradle-build.yml/badge.svg)

This demo shows how to use the fault tolerance library [Resilience4j](https://github.com/resilience4j/resilience4j) in a Spring Boot 2 application.

See [User Guide](https://resilience4j.readme.io/docs/getting-started-3) for more details.

The [BackendAService](https://github.com/resilience4j/resilience4j-spring-boot2-demo/blob/master/src/main/java/io/github/robwin/service/BackendAService.java) shows how to use the Resilience4j Annotations.

The [BackendBController](https://github.com/resilience4j/resilience4j-spring-boot2-demo/blob/master/src/main/java/io/github/robwin/controller/BackendBController.java) shows how to use the functional style and the Spring Reactor operators.

## Getting Started

Just run the Application.java in your IDE.

or `./gradlew bootrun`

Application is running on http://localhost:9080.

## Monitoring with Prometheus and Grafana (OPTIONAL)

### Requirements
[Docker](https://docs.docker.com/install/) and [Docker Compose](https://docs.docker.com/compose/install/) installed.
 
### Step 1
Use docker-compose to start Grafana and Prometheus servers.
- In the root folder
```sh
docker-compose -f docker-compose.yml up
```
### Step 2
Check the Prometheus server.
- Open http://localhost:9090
- Access status -> Targets, both endpoints must be "UP"

### Step 3
Configure the Grafana.
- Open http://localhost:3000
- **Configure integration with Prometheus**
    - Access configuration
    - Add data source
    - Select Prometheus
    - Use url "http://localhost:9090" and access with value "Browser"
- **Configure dashboard**
    - Access "home"
    - Import dashboard
    - Upload dashboard.json from /docker

## License

Copyright 2019 Robert Winkler

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.