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main.go
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main.go
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package main
import (
"fmt"
"os"
"os/exec"
"regexp"
"golang.org/x/mod/semver"
"gopkg.in/yaml.v3"
)
type GHWorkflow struct {
Jobs struct {
Build struct {
Env struct {
GOVER string `yaml:"GOVER"`
GOLANGCILINTVER string `yaml:"GOLANGCILINT_VER"`
} `yaml:"env"`
} `yaml:"build"`
} `yaml:"jobs"`
}
func parseWorkflowVersionFromFile(path string) (string, error) {
var ghWorkflow GHWorkflow
raw, err := os.ReadFile(path)
if err != nil {
return "", err
}
err = yaml.Unmarshal(raw, &ghWorkflow)
if err != nil {
return "", err
}
return ghWorkflow.Jobs.Build.Env.GOLANGCILINTVER, err
}
func getCurrentVersion() (string, error) {
out, err := exec.Command("golangci-lint", "--version").Output()
if err != nil {
return "", err
}
regex, err := regexp.Compile(`golangci-lint\shas\sversion\sv?([\d+.]+[\d])`)
if err != nil {
return "", err
}
matches := regex.FindStringSubmatch(string(out))
if matches == nil {
return "", fmt.Errorf("no version found: %v", string(out))
}
return fmt.Sprintf("v%s", matches[1]), err
}
func isVersionValid(workflowVersion, currentVersion string) bool {
res := semver.MajorMinor(workflowVersion) == semver.MajorMinor(currentVersion)
return res
}
func compareVersions(path string) string {
workflowVersion, err := parseWorkflowVersionFromFile(path)
if err != nil {
return fmt.Sprintf("Error parsing workflow version: %v", err)
}
currentVersion, err := getCurrentVersion()
if err != nil {
return fmt.Sprintf("Error getting current version: %v", err)
}
validVersion := isVersionValid(workflowVersion, currentVersion)
if !validVersion {
return fmt.Sprintf("Invalid version, expected: %s, current: %s - See: https://golangci-lint.run/usage/install/ for instructions to update", workflowVersion, currentVersion)
}
return fmt.Sprintf("Linter version is valid (MajorMinor): %s", currentVersion)
}
func main() {
fmt.Println(compareVersions("../../.github/workflows/test-on-push.yaml"))
}