Monorepo for Tangled
cmd/populatepipelines: script to generate dummy pipeline runs
Signed-off-by: Anirudh Oppiliappan <anirudh@tangled.org>
authored by
Anirudh Oppiliappan
and committed by
tangled.org
(Feb 9, 2026, 3:40 AM UTC)
c23e99cf
92ab4c2e
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cmd/populatepipelines/populate_pipelines.go
+242
cmd/populatepipelines/populate_pipelines.go
···
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package main
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import (
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"database/sql"
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"flag"
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"fmt"
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"log"
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"math/rand"
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"time"
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"github.com/bluesky-social/indigo/atproto/syntax"
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_ "github.com/mattn/go-sqlite3"
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)
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var (
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dbPath = flag.String("db", "appview.db", "Path to SQLite database")
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count = flag.Int("count", 10, "Number of pipeline runs to generate")
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repo = flag.String("repo", "", "Repository name (e.g., 'did:plc:xyz/myrepo')")
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knot = flag.String("knot", "localhost:8100", "Knot hostname")
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)
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// StatusKind represents the status of a workflow
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type StatusKind string
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const (
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StatusKindPending StatusKind = "pending"
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StatusKindRunning StatusKind = "running"
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StatusKindFailed StatusKind = "failed"
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StatusKindTimeout StatusKind = "timeout"
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StatusKindCancelled StatusKind = "cancelled"
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StatusKindSuccess StatusKind = "success"
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)
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var finishStatuses = []StatusKind{
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StatusKindFailed,
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StatusKindTimeout,
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StatusKindCancelled,
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StatusKindSuccess,
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}
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// generateRandomSha generates a random 40-character SHA
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func generateRandomSha() string {
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const hexChars = "0123456789abcdef"
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sha := make([]byte, 40)
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for i := range sha {
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sha[i] = hexChars[rand.Intn(len(hexChars))]
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}
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return string(sha)
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}
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// generateRkey generates a TID-like rkey
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func generateRkey() string {
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// Simple timestamp-based rkey
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now := time.Now().UnixMicro()
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return fmt.Sprintf("%d", now)
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}
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func main() {
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flag.Parse()
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if *repo == "" {
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log.Fatal("--repo is required (format: did:plc:xyz/reponame)")
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}
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// Parse repo into owner and name
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did, repoName, ok := parseRepo(*repo)
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if !ok {
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log.Fatalf("Invalid repo format: %s (expected: did:plc:xyz/reponame)", *repo)
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}
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db, err := sql.Open("sqlite3", *dbPath)
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if err != nil {
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log.Fatalf("Failed to open database: %v", err)
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}
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defer db.Close()
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rand.Seed(time.Now().UnixNano())
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branches := []string{"main", "develop", "feature/auth", "fix/bugs"}
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workflows := []string{"test", "build", "lint", "deploy"}
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log.Printf("Generating %d pipeline runs for %s...\n", *count, *repo)
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for i := 0; i < *count; i++ {
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// Random trigger type
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isPush := rand.Float32() > 0.3 // 70% push, 30% PR
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var triggerId int64
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if isPush {
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triggerId, err = createPushTrigger(db, branches)
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} else {
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triggerId, err = createPRTrigger(db, branches)
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}
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if err != nil {
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log.Fatalf("Failed to create trigger: %v", err)
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}
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// Create pipeline
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pipelineRkey := generateRkey()
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sha := generateRandomSha()
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createdTime := time.Now().Add(-time.Duration(rand.Intn(7*24*60)) * time.Minute) // Random time in last week
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_, err = db.Exec(`
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INSERT INTO pipelines (knot, rkey, repo_owner, repo_name, sha, created, trigger_id)
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VALUES (?, ?, ?, ?, ?, ?, ?)
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`, *knot, pipelineRkey, did, repoName, sha, createdTime.Format(time.RFC3339), triggerId)
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if err != nil {
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log.Fatalf("Failed to create pipeline: %v", err)
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}
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// Create workflow statuses
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numWorkflows := rand.Intn(len(workflows)-1) + 2 // 2-4 workflows
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selectedWorkflows := make([]string, numWorkflows)
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perm := rand.Perm(len(workflows))
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for j := 0; j < numWorkflows; j++ {
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selectedWorkflows[j] = workflows[perm[j]]
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}
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for _, workflow := range selectedWorkflows {
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err = createWorkflowStatuses(db, *knot, pipelineRkey, workflow, createdTime)
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if err != nil {
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log.Fatalf("Failed to create workflow statuses: %v", err)
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}
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}
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log.Printf("Created pipeline %d/%d (rkey: %s)\n", i+1, *count, pipelineRkey)
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// Small delay to ensure unique rkeys
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time.Sleep(2 * time.Millisecond)
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}
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log.Println("✓ Pipeline population complete!")
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}
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func parseRepo(repo string) (syntax.DID, string, bool) {
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// Simple parser for "did:plc:xyz/reponame"
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for i := 0; i < len(repo); i++ {
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if repo[i] == '/' {
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did := syntax.DID(repo[:i])
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name := repo[i+1:]
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if did != "" && name != "" {
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return did, name, true
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}
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}
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}
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return "", "", false
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}
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func createPushTrigger(db *sql.DB, branches []string) (int64, error) {
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branch := branches[rand.Intn(len(branches))]
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oldSha := generateRandomSha()
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newSha := generateRandomSha()
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result, err := db.Exec(`
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INSERT INTO triggers (kind, push_ref, push_new_sha, push_old_sha)
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VALUES (?, ?, ?, ?)
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`, "push", "refs/heads/"+branch, newSha, oldSha)
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if err != nil {
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return 0, err
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}
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return result.LastInsertId()
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}
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func createPRTrigger(db *sql.DB, branches []string) (int64, error) {
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targetBranch := branches[0] // Usually main
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sourceBranch := branches[rand.Intn(len(branches)-1)+1]
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sourceSha := generateRandomSha()
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actions := []string{"opened", "synchronize", "reopened"}
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action := actions[rand.Intn(len(actions))]
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result, err := db.Exec(`
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INSERT INTO triggers (kind, pr_source_branch, pr_target_branch, pr_source_sha, pr_action)
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VALUES (?, ?, ?, ?, ?)
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`, "pull_request", sourceBranch, targetBranch, sourceSha, action)
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if err != nil {
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return 0, err
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}
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return result.LastInsertId()
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}
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func createWorkflowStatuses(db *sql.DB, knot, pipelineRkey, workflow string, startTime time.Time) error {
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// Generate a progression of statuses for the workflow
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statusProgression := []StatusKind{StatusKindPending, StatusKindRunning}
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// Randomly choose a final status (80% success, 10% failed, 5% timeout, 5% cancelled)
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roll := rand.Float32()
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var finalStatus StatusKind
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switch {
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case roll < 0.80:
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finalStatus = StatusKindSuccess
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case roll < 0.90:
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finalStatus = StatusKindFailed
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case roll < 0.95:
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finalStatus = StatusKindTimeout
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default:
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finalStatus = StatusKindCancelled
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}
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statusProgression = append(statusProgression, finalStatus)
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currentTime := startTime
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for i, status := range statusProgression {
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rkey := fmt.Sprintf("%s-%s-%d", pipelineRkey, workflow, i)
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// Add some realistic time progression (10-60 seconds between statuses)
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if i > 0 {
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currentTime = currentTime.Add(time.Duration(rand.Intn(50)+10) * time.Second)
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}
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var errorMsg *string
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var exitCode int
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if status == StatusKindFailed {
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msg := "Command exited with non-zero status"
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errorMsg = &msg
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exitCode = rand.Intn(100) + 1
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} else if status == StatusKindTimeout {
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msg := "Workflow exceeded maximum execution time"
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errorMsg = &msg
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exitCode = 124
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}
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_, err := db.Exec(`
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INSERT INTO pipeline_statuses (
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spindle, rkey, pipeline_knot, pipeline_rkey,
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created, workflow, status, error, exit_code
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) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)
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`, "spindle.example.com", rkey, knot, pipelineRkey,
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currentTime.Format(time.RFC3339), workflow, string(status), errorMsg, exitCode)
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if err != nil {
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return err
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}
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}
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return nil
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}