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feat(cd): add github workflow job type
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,236 @@ | ||
| package jobs | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "log" | ||
| "net/http" | ||
| "os" | ||
| "time" | ||
|
|
||
| "golang.org/x/oauth2" | ||
|
|
||
| "github.com/google/go-github/v56/github" | ||
|
|
||
| "github.com/3box/pipeline-tools/cd/manager" | ||
| "github.com/3box/pipeline-tools/cd/manager/common/job" | ||
| ) | ||
|
|
||
| // Allow up to 4 hours for a workflow to run | ||
| const workflowFailureTime = 4 * time.Hour | ||
|
|
||
| // GitHub constants | ||
| const ( | ||
| gitHub_WorkflowEventType = "workflow_dispatch" | ||
| gitHub_WorkflowTimeFormat = "2006-01-02T15:04:05.000Z" // ISO8601 | ||
| gitHub_WorkflowJobId = "job_id" | ||
| ) | ||
| const ( | ||
| gitHub_WorkflowStatus_Success = "success" | ||
| gitHub_WorkflowStatus_Failure = "failure" | ||
| ) | ||
|
|
||
| var _ manager.JobSm = &githubWorkflowJob{} | ||
|
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| type githubWorkflowJob struct { | ||
| baseJob | ||
| client *github.Client | ||
| org string | ||
| repo string | ||
| ref string | ||
| workflow string | ||
| inputs map[string]interface{} | ||
| env string | ||
| } | ||
|
|
||
| func GitHubWorkflowJob(jobState job.JobState, db manager.Database, notifs manager.Notifs) (manager.JobSm, error) { | ||
| if org, found := jobState.Params[job.WorkflowJobParam_Org].(string); !found { | ||
| return nil, fmt.Errorf("githubWorkflowJob: missing org") | ||
| } else if repo, found := jobState.Params[job.WorkflowJobParam_Repo].(string); !found { | ||
| return nil, fmt.Errorf("githubWorkflowJob: missing repo") | ||
| } else if ref, found := jobState.Params[job.WorkflowJobParam_Ref].(string); !found { | ||
| return nil, fmt.Errorf("githubWorkflowJob: missing ref") | ||
| } else if workflow, found := jobState.Params[job.WorkflowJobParam_Workflow].(string); !found { | ||
| return nil, fmt.Errorf("githubWorkflowJob: missing workflow") | ||
| } else { | ||
| inputs, _ := jobState.Params[job.WorkflowJobParam_Inputs].(map[string]interface{}) | ||
| if len(inputs) == 0 { | ||
| inputs = make(map[string]interface{}, 1) | ||
| } | ||
| // Add the job ID to the inputs, so we can track the right workflow corresponding to this job. | ||
| inputs[gitHub_WorkflowJobId] = jobState.Job | ||
| // Set the environment - it's ok to override it even if it was already set. | ||
| env := os.Getenv("ENV") | ||
| jobState.Params[job.WorkflowJobParam_Environment] = env | ||
|
|
||
| var httpClient *http.Client = nil | ||
| if accessToken, found := os.LookupEnv("GITHUB_ACCESS_TOKEN"); found { | ||
| ts := oauth2.StaticTokenSource( | ||
| &oauth2.Token{AccessToken: accessToken}, | ||
| ) | ||
| httpClient = oauth2.NewClient(context.Background(), ts) | ||
| } | ||
|
|
||
| return &githubWorkflowJob{ | ||
| baseJob{jobState, db, notifs}, | ||
| github.NewClient(httpClient), | ||
| org, | ||
| repo, | ||
| ref, | ||
| workflow, | ||
| inputs, | ||
| env, | ||
| }, nil | ||
| } | ||
| } | ||
|
|
||
| func (w githubWorkflowJob) Advance() (job.JobState, error) { | ||
| now := time.Now() | ||
| switch w.state.Stage { | ||
| case job.JobStage_Queued: | ||
| { | ||
| // No preparation needed so advance the job directly to "dequeued". | ||
| // | ||
| // Advance the timestamp by a tiny amount so that the "dequeued" event remains at the same position on the | ||
| // timeline as the "queued" event but still ahead of it. | ||
| return w.advance(job.JobStage_Dequeued, w.state.Ts.Add(time.Nanosecond), nil) | ||
| } | ||
| case job.JobStage_Dequeued: | ||
| { | ||
| if err := w.startWorkflow(); err != nil { | ||
| return w.advance(job.JobStage_Failed, now, err) | ||
| } else { | ||
| w.state.Params[job.JobParam_Start] = float64(time.Now().UnixNano()) | ||
| return w.advance(job.JobStage_Started, now, nil) | ||
| } | ||
| } | ||
| case job.JobStage_Started: | ||
| { | ||
| if workflowRun, err := w.findMatchingWorkflowRun(); err != nil { | ||
| return w.advance(job.JobStage_Failed, now, err) | ||
| } else if workflowRun != nil { | ||
| // Record workflow details and advance the job | ||
| w.state.Params[job.JobParam_Id] = float64(workflowRun.GetID()) | ||
| w.state.Params[job.WorkflowJobParam_Url] = workflowRun.GetHTMLURL() | ||
| return w.advance(job.JobStage_Waiting, now, nil) | ||
| } else if job.IsTimedOut(w.state, manager.DefaultWaitTime) { // Workflow did not start in time | ||
| return w.advance(job.JobStage_Failed, now, manager.Error_StartupTimeout) | ||
| } else { | ||
| // Return so we come back again to check | ||
| return w.state, nil | ||
| } | ||
| } | ||
| case job.JobStage_Waiting: | ||
| { | ||
| if status, err := w.checkWorkflowStatus(); err != nil { | ||
| return w.advance(job.JobStage_Failed, now, err) | ||
| } else if status == gitHub_WorkflowStatus_Success { | ||
| return w.advance(job.JobStage_Completed, now, nil) | ||
| } else if status == gitHub_WorkflowStatus_Failure { | ||
| return w.advance(job.JobStage_Failed, now, nil) | ||
| } else if job.IsTimedOut(w.state, workflowFailureTime) { // Workflow did not finish in time | ||
| return w.advance(job.JobStage_Failed, now, manager.Error_CompletionTimeout) | ||
| } else { | ||
| // Return so we come back again to check | ||
| return w.state, nil | ||
| } | ||
| } | ||
| default: | ||
| { | ||
| return w.advance(job.JobStage_Failed, now, fmt.Errorf("githubWorkflowJob: unexpected state: %w", manager.PrintJob(w.state))) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func (w githubWorkflowJob) startWorkflow() error { | ||
| ctx, cancel := context.WithTimeout(context.Background(), manager.DefaultHttpWaitTime) | ||
| defer cancel() | ||
|
|
||
| resp, err := w.client.Actions.CreateWorkflowDispatchEventByFileName( | ||
| ctx, w.org, w.repo, w.workflow, github.CreateWorkflowDispatchEventRequest{ | ||
| Ref: w.ref, | ||
| Inputs: w.inputs, | ||
| }) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| log.Printf("startWorkflow: rate limit=%d, remaining=%d, resetAt=%s", resp.Rate.Limit, resp.Rate.Remaining, resp.Rate.Reset) | ||
| return nil | ||
| } | ||
|
|
||
| func (w githubWorkflowJob) findMatchingWorkflowRun() (*github.WorkflowRun, error) { | ||
| if workflowRuns, count, err := w.getWorkflowRuns(); err != nil { | ||
| return nil, err | ||
| } else if count > 0 { | ||
| for _, workflowRun := range workflowRuns { | ||
| if workflowJobs, count, err := w.getWorkflowJobs(workflowRun); err != nil { | ||
| return nil, err | ||
| } else if count > 0 { | ||
| for _, workflowJob := range workflowJobs { | ||
| for _, jobStep := range workflowJob.Steps { | ||
| // If we found a job step with our job ID, then we know this is the workflow we're looking for | ||
| // and need to monitor. | ||
| if jobStep.GetName() == w.state.Job { | ||
| return workflowRun, nil | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| return nil, nil | ||
| } | ||
|
|
||
| func (w githubWorkflowJob) getWorkflowRuns() ([]*github.WorkflowRun, int, error) { | ||
| ctx, cancel := context.WithTimeout(context.Background(), manager.DefaultHttpWaitTime) | ||
| defer cancel() | ||
|
|
||
| // Limit the search to runs after the start of the job (minus 1 minute, so we avoid any races). | ||
| searchTime := time.Unix(0, int64(w.state.Params[job.JobParam_Start].(float64))).Add(-time.Minute) | ||
| if workflows, resp, err := w.client.Actions.ListWorkflowRunsByFileName( | ||
| ctx, w.org, w.repo, w.workflow, &github.ListWorkflowRunsOptions{ | ||
| Branch: w.ref, | ||
| Event: gitHub_WorkflowEventType, | ||
| Created: ">" + searchTime.Format(gitHub_WorkflowTimeFormat), | ||
| ExcludePullRequests: true, | ||
| }); err != nil { | ||
| return nil, 0, err | ||
| } else { | ||
| log.Printf("getWorkflowRuns: runs=%d, rate limit=%d, remaining=%d, resetAt=%s", *workflows.TotalCount, resp.Rate.Limit, resp.Rate.Remaining, resp.Rate.Reset) | ||
| return workflows.WorkflowRuns, *workflows.TotalCount, nil | ||
| } | ||
| } | ||
|
|
||
| func (w githubWorkflowJob) getWorkflowJobs(workflowRun *github.WorkflowRun) ([]*github.WorkflowJob, int, error) { | ||
| ctx, cancel := context.WithTimeout(context.Background(), manager.DefaultHttpWaitTime) | ||
| defer cancel() | ||
|
|
||
| if jobs, resp, err := w.client.Actions.ListWorkflowJobs(ctx, w.org, w.repo, workflowRun.GetID(), nil); err != nil { | ||
| return nil, 0, err | ||
| } else { | ||
| log.Printf("getWorkflowJobs: jobs=%d, rate limit=%d, remaining=%d, resetAt=%s", *jobs.TotalCount, resp.Rate.Limit, resp.Rate.Remaining, resp.Rate.Reset) | ||
| return jobs.Jobs, *jobs.TotalCount, nil | ||
| } | ||
| } | ||
|
|
||
| func (w githubWorkflowJob) checkWorkflowStatus() (string, error) { | ||
| // The workflow run ID should have been filled in by this point | ||
| workflowRunId, _ := w.state.Params[job.JobParam_Id].(float64) | ||
| if workflowRun, err := w.getWorkflowRun(int64(workflowRunId)); err != nil { | ||
| return "", err | ||
| } else { | ||
| return workflowRun.GetConclusion(), nil | ||
| } | ||
| } | ||
|
|
||
| func (w githubWorkflowJob) getWorkflowRun(workflowRunId int64) (*github.WorkflowRun, error) { | ||
| ctx, cancel := context.WithTimeout(context.Background(), manager.DefaultHttpWaitTime) | ||
| defer cancel() | ||
|
|
||
| if workflowRun, resp, err := w.client.Actions.GetWorkflowRunByID(ctx, w.org, w.repo, workflowRunId); err != nil { | ||
| return nil, err | ||
| } else { | ||
| log.Printf("getWorkflowRun: rate limit=%d, remaining=%d, resetAt=%s", resp.Rate.Limit, resp.Rate.Remaining, resp.Rate.Reset) | ||
| return workflowRun, nil | ||
| } | ||
| } |
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