Developing a custom CI/CD pipeline tool in Go can help automate the processes of building, testing, and deploying applications. This project involves setting up pipelines, triggering builds, running tests, and deploying applications.
Step-by-Step Guide
Define the Pipeline Structure:
Create a structure to define pipeline stages, jobs, and steps.
type Step struct {
Name string
Command string
}
type Job struct {
Name string
Steps []Step
}
type Pipeline struct {
Name string
Jobs []Job
}
Parse Configuration:
Write a function to parse a pipeline configuration file (e.g., YAML or JSON).
import (
"encoding/json"
"io/ioutil"
"log"
)
func parsePipelineConfig(filePath string) (*Pipeline, error) {
file, err := ioutil.ReadFile(filePath)
if err != nil {
return nil, err
}
var pipeline Pipeline
err = json.Unmarshal(file, &pipeline)
if err != nil {
return nil, err
}
return &pipeline, nil
}
Execute Steps:
Implement a function to execute the steps defined in the pipeline.
import (
"os/exec"
)
func executeStep(step Step) error {
cmd := exec.Command("sh", "-c", step.Command)
output, err := cmd.CombinedOutput()
if err != nil {
return err
}
log.Println(string(output))
return nil
}
Run the Pipeline:
Create a function to run the entire pipeline.
func runPipeline(pipeline *Pipeline) error {
for _, job := range pipeline.Jobs {
log.Printf("Starting job: %s", job.Name)
for _, step := range job.Steps {
log.Printf("Executing step: %s", step.Name)
err := executeStep(step)
if err != nil {
return err
}
}
}
return nil
}
Main Function:
Combine everything in the main function.
func main() {
pipeline, err := parsePipelineConfig("pipeline.json")
if err != nil {
log.Fatal(err)
}
err = runPipeline(pipeline)
if err != nil {
log.Fatal(err)
}
log.Println("Pipeline execution completed successfully")
}