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feat: add support for GH actions on forked repo PRs (siderolabs#130)
Signed-off-by: Andrew Rynhard <andrew@andrewrynhard.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,119 @@ | ||
| package summarizer | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "errors" | ||
| "fmt" | ||
| "io/ioutil" | ||
| "log" | ||
| "net/http" | ||
| "os" | ||
| "path" | ||
| "strings" | ||
|
|
||
| "github.com/autonomy/conform/internal/git" | ||
| "github.com/google/go-github/github" | ||
| ) | ||
|
|
||
| // Summarizer describes a hook for send summarized results to a remote API. | ||
| type Summarizer interface { | ||
| SetStatus(string, string, string, string) error | ||
| } | ||
|
|
||
| // GitHub is a summarizer that can be used with GitHub. | ||
| type GitHub struct { | ||
| token string | ||
| owner string | ||
| repo string | ||
| sha string | ||
| } | ||
|
|
||
| // Noop is a summarizer that does nothing. | ||
| type Noop struct { | ||
| } | ||
|
|
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| // SetStatus is a noop func. | ||
| func (n *Noop) SetStatus(state, policy, check, message string) error { | ||
| return nil | ||
| } | ||
|
|
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| // NewGitHubSummarizer returns a summarizer that posts policy checks as status | ||
| // checks on a pull request. | ||
| func NewGitHubSummarizer(token string) (*GitHub, error) { | ||
| eventPath, ok := os.LookupEnv("GITHUB_EVENT_PATH") | ||
| if !ok { | ||
| return nil, errors.New("GITHUB_EVENT_PATH is not set") | ||
| } | ||
|
|
||
| data, err := ioutil.ReadFile(eventPath) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| pullRequestEvent := &github.PullRequestEvent{} | ||
| if err = json.Unmarshal(data, pullRequestEvent); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| g, err := git.NewGit() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| if err = g.FetchPullRequest("origin", pullRequestEvent.GetNumber()); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| if err = g.CheckoutPullRequest(pullRequestEvent.GetNumber()); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| sha, err := g.SHA() | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
|
|
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| gh := &GitHub{ | ||
| token: token, | ||
| owner: pullRequestEvent.GetRepo().GetOwner().GetLogin(), | ||
| repo: pullRequestEvent.GetRepo().GetName(), | ||
| sha: sha, | ||
| } | ||
|
|
||
| return gh, nil | ||
| } | ||
|
|
||
| // SetStatus sets the status of a GitHub check. | ||
| // Valid statuses are "error", "failure", "pending", "success" | ||
| func (gh *GitHub) SetStatus(state, policy, check, message string) error { | ||
| if gh.token == "" { | ||
| return errors.New("no token") | ||
| } | ||
| statusCheckContext := strings.ReplaceAll(strings.ToLower(path.Join("conform", policy, check)), " ", "-") | ||
| description := message | ||
| repoStatus := &github.RepoStatus{} | ||
| repoStatus.Context = &statusCheckContext | ||
| repoStatus.Description = &description | ||
| repoStatus.State = &state | ||
|
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| http.DefaultClient.Transport = roundTripper{gh.token} | ||
| githubClient := github.NewClient(http.DefaultClient) | ||
|
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| _, _, err := githubClient.Repositories.CreateStatus(context.Background(), gh.owner, gh.repo, gh.sha, repoStatus) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| type roundTripper struct { | ||
| accessToken string | ||
| } | ||
|
|
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| // RoundTrip implements the net/http.RoundTripper interface. | ||
| func (rt roundTripper) RoundTrip(r *http.Request) (*http.Response, error) { | ||
| r.Header.Set("Authorization", fmt.Sprintf("Bearer %s", rt.accessToken)) | ||
| return http.DefaultTransport.RoundTrip(r) | ||
| } |