CI/CD Overview

The project does not currently have a CI/CD setup implemented. To streamline deployment processes, there are several key steps to consider for integration and continuous deployment, particularly with services like GitHub Actions, GitLab CI, or similar tools.

Recommended Next Steps for CI/CD Setup

1. Select a CI/CD Provider: Choose a CI/CD provider that fits the team’s workflow, such as GitHub Actions or GitLab CI.

2. Create Pipeline Configurations: Define pipeline configurations that build, test, and deploy the application. This can involve creating configuration files specific to the chosen provider.

3. Integrate Building and Testing: Implement a step to build the application and run tests. For example, in GitHub Actions, you would define a workflow YAML file.

4. Deployment Procedures: Establish the necessary deployment channels, like pushing to cloud services or Docker registries.

5. Environment Configurations: Ensure that environment variables and other configurations are managed properly, possibly through secret managers provided by your CI/CD service.

Example CI/CD Configuration for GitHub Actions

Here is a simplified example of how you might start configuring a CI/CD pipeline using GitHub Actions for building and deploying the services written in Java:

.github/workflows/ci-cd.yml

name: CI/CD Pipeline

on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main

jobs:
  build:
    runs-on: ubuntu-latest
    
    steps:
      - name: Check out code
        uses: actions/checkout@v2
        
      - name: Set up JDK
        uses: actions/setup-java@v2
        with:
          java-version: '17'
          
      - name: Build with Gradle
        run: ./gradlew build
        
      - name: Run tests
        run: ./gradlew test
        
  deploy:
    runs-on: ubuntu-latest
    needs: build
    if: github.ref == 'refs/heads/main'
    
    steps:
      - name: Deploy to Docker
        run: |
          docker build -t myapp:latest .
          docker push myapp:latest

Dockerfile Example

The Dockerfile provided demonstrates a multi-stage build. The first stage builds the application using Gradle, and the second stage creates a lightweight Docker image:

FROM --platform=${BUILDPLATFORM} gradle:8-jdk17 AS builder

WORKDIR /usr/src/app/
COPY ./src/frauddetectionservice/ ./
COPY ./pb/ ./src/main/proto/
RUN gradle shadowJar

FROM gcr.io/distroless/java17-debian11

ARG OTEL_JAVA_AGENT_VERSION
WORKDIR /usr/src/app/

COPY --from=builder /usr/src/app/build/libs/frauddetectionservice-1.0-all.jar ./
ADD --chmod=644 https://github.com/open-telemetry/opentelemetry-java-instrumentation/releases/download/v$OTEL_JAVA_AGENT_VERSION/opentelemetry-javaagent.jar /app/opentelemetry-javaagent.jar
ENV JAVA_TOOL_OPTIONS=-javaagent:/app/opentelemetry-javaagent.jar

ENTRYPOINT [ "java", "-jar", "frauddetectionservice-1.0-all.jar" ]

Makefile Example

The Makefile can be used to define simple commands for building and testing the application, which can be invoked directly from the CI/CD pipeline scripts:

.PHONY: build test deploy

build:
       ./gradlew build

test:
       ./gradlew test

deploy:
       docker build -t myapp:latest .
       docker push myapp:latest

Conclusion

The setup provided illustrates initial steps and examples for establishing CI/CD processes for the open-telemetry/opentelemetry-demo project. By following the outlined steps and utilizing the provided code samples, an effective CI/CD pipeline can be created to support continuous integration and deployment.