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gotip.go
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gotip.go
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package gotip
import (
"errors"
"fmt"
"strings"
"time"
"github.com/patrickmn/go-cache"
)
// PathInfo contains the list of critical path (or journey) labels that
// require completion for the pull request to be considered 'Verified'
type PathInfo struct {
Paths []Path `yaml:"Paths"`
}
// Path represents a critical path (or journey) in the application.
// It consists of a unique label (Path) and a description. The description
// serves no purpose other than to provide context to the reader.
type Path struct {
PathName string `yaml:"PathName"`
PathDesc string `yaml:"PathDesc"`
}
var c = cache.New(0, 0) // go-cache no expiry
const layout = "2006-01-02T15:04:05.000Z"
func init() {
go initMostRecentlyMergedPR()
}
// Verify a critical path in your application. Must match a PathName as defined in paths.yaml
func Verify(pathName string) {
lastMergedPR := getMostRecentlyMergedPullRequestFromCache()
if lastMergedPR == "" {
fmt.Printf("Pull request number not set. Cannot proceed with verification of path [%s].\n", pathName)
return
}
if !isValidPath(pathName) {
return
}
if isPullRequestAlreadyVerified(lastMergedPR) {
return
}
if isPathVerfiedForThisPullRequest(pathName, lastMergedPR) {
return
}
markPathVerified(pathName, lastMergedPR)
if areAllPathsVerifiedForPR(lastMergedPR) {
markPullRequestVerified(lastMergedPR)
go applyLabelToPullRequest(lastMergedPR)
}
}
func isValidPath(pathNameToValidate string) bool {
pathsToBeVerified, err := getPathsToBeVerified()
if err != nil {
fmt.Println(err)
return false
}
for i := range pathsToBeVerified {
if pathsToBeVerified[i].PathName == pathNameToValidate {
return true
}
}
fmt.Printf("Path Name specified [%s] is not in the configured list\n", pathNameToValidate)
return false
}
func getPathsToBeVerified() ([]Path, error) {
paths := getPathInfo().Paths
if len(paths) < 1 {
return nil, errors.New("no paths specified")
}
return paths, nil
}
func isPathVerfiedForThisPullRequest(pathToBeVerified string, lastMergedPR string) bool {
pr, found := c.Get(pathToBeVerified)
if found {
if strings.Compare(pr.(string), "PR-"+lastMergedPR) == 0 {
return true
}
return false
}
return false
}
func isPullRequestAlreadyVerified(mostRecentPullRequestNumber string) bool {
verifiedTimestamp, found := c.Get("PR-" + mostRecentPullRequestNumber)
if found {
if strings.Compare(verifiedTimestamp.(string), "") == 0 {
return false
}
_, err := time.Parse(layout, verifiedTimestamp.(string))
if err != nil {
fmt.Println(err)
}
return true
}
return false
}
func areAllPathsVerifiedForPR(prNumber string) bool {
pathsToBeVerified := getPathInfo().Paths
for i := range pathsToBeVerified {
if !isPathVerfiedForThisPullRequest(pathsToBeVerified[i].PathName, prNumber) {
return false
}
}
return true
}
func initMostRecentlyMergedPR() {
prNumber := getMostRecentlyMergedPullRequest()
c.Set("current_pr", prNumber, cache.DefaultExpiration)
c.Set("PR-"+prNumber, "", cache.DefaultExpiration)
}
func getMostRecentlyMergedPullRequestFromCache() string {
pr, found := c.Get("current_pr")
if found {
return pr.(string)
}
return ""
}
func markPathVerified(pathName string, prNumber string) {
c.Set(pathName, "PR-"+prNumber, cache.DefaultExpiration)
}
func markPullRequestVerified(prNumber string) {
t := time.Now()
timestamp := t.Format(layout)
c.Set("PR-"+prNumber, timestamp, cache.DefaultExpiration)
}
func unmarkPullRequestVerified(prNumber string) {
c.Set("PR-"+prNumber, "", cache.DefaultExpiration)
fmt.Printf("PR# [%s] verifation reset for PR# [%s]\n", prNumber)
}