// Runs the job
func (r *JobRunner) Run() error {
logger.Info("Starting job %s", r.Job.ID)
// Start the build in the Buildkite Agent API. This is the first thing
// we do so if it fails, we don't have to worry about cleaning things
// up like started log streamer workers, etc.
if err := r.startJob(time.Now()); err != nil {
return err
}
// Start the header time streamer
if err := r.headerTimesStreamer.Start(); err != nil {
return err
}
// Start the log streamer
if err := r.logStreamer.Start(); err != nil {
return err
}
// Start the process. This will block until it finishes.
if err := r.process.Start(); err != nil {
// Send the error as output
r.logStreamer.Process(fmt.Sprintf("%s", err))
} else {
// Add the final output to the streamer
r.logStreamer.Process(r.process.Output())
}
// Store the finished at time
finishedAt := time.Now()
// Stop the header time streamer. This will block until all the chunks
// have been uploaded
r.headerTimesStreamer.Stop()
// Stop the log streamer. This will block until all the chunks have
// been uploaded
r.logStreamer.Stop()
// Warn about failed chunks
if r.logStreamer.ChunksFailedCount > 0 {
logger.Warn("%d chunks failed to upload for this job", r.logStreamer.ChunksFailedCount)
}
// Finish the build in the Buildkite Agent API
r.finishJob(finishedAt, r.process.ExitStatus, int(r.logStreamer.ChunksFailedCount))
// Wait for the routines that we spun up to finish
logger.Debug("[JobRunner] Waiting for all other routines to finish")
r.routineWaitGroup.Wait()
logger.Info("Finished job %s", r.Job.ID)
return nil
}
func (a *ArtifactSearcher) Search(query string, scope string) ([]*api.Artifact, error) {
if scope == "" {
logger.Info("Searching for artifacts: \"%s\"", query)
} else {
logger.Info("Searching for artifacts: \"%s\" within step: \"%s\"", query, scope)
}
options := &api.ArtifactSearchOptions{Query: query, Scope: scope}
artifacts, _, err := a.APIClient.Artifacts.Search(a.BuildID, options)
return artifacts, err
}
// Stops the agent from accepting new work and cancels any current work it's
// running
func (a *AgentWorker) Stop(graceful bool) {
// Only allow one stop to run at a time (because we're playing with
// channels)
a.stopMutex.Lock()
defer a.stopMutex.Unlock()
if graceful {
if a.stopping {
logger.Warn("Agent is already gracefully stopping...")
} else {
// If we have a job, tell the user that we'll wait for
// it to finish before disconnecting
if a.jobRunner != nil {
logger.Info("Gracefully stopping agent. Waiting for current job to finish before disconnecting...")
} else {
logger.Info("Gracefully stopping agent. Since there is no job running, the agent will disconnect immediately")
}
}
} else {
// If there's a job running, kill it, then disconnect
if a.jobRunner != nil {
logger.Info("Forefully stopping agent. The current job will be canceled before disconnecting...")
// Kill the current job. Doesn't do anything if the job
// is already being killed, so it's safe to call
// multiple times.
a.jobRunner.Kill()
} else {
logger.Info("Forefully stopping agent. Since there is no job running, the agent will disconnect immediately")
}
}
// We don't need to do the below operations again since we've already
// done them before
if a.stopping {
return
}
// Update the proc title
a.UpdateProcTitle("stopping")
// If we have a ticker, stop it, and send a signal to the stop channel,
// which will cause the agent worker to stop looping immediatly.
if a.ticker != nil {
close(a.stop)
}
// Mark the agent as stopping
a.stopping = true
}
func (a *ArtifactBatchCreator) Create() ([]*api.Artifact, error) {
length := len(a.Artifacts)
chunks := 30
// Split into the artifacts into chunks so we're not uploading a ton of
// files at once.
for i := 0; i < length; i += chunks {
j := i + chunks
if length < j {
j = length
}
// The artifacts that will be uploaded in this chunk
theseArtiacts := a.Artifacts[i:j]
// An ID is required so Buildkite can ensure this create
// operation is idompotent (if we try and upload the same ID
// twice, it'll just return the previous data and skip the
// upload)
batch := &api.ArtifactBatch{api.NewUUID(), theseArtiacts, a.UploadDestination}
logger.Info("Creating (%d-%d)/%d artifacts", i, j, length)
var creation *api.ArtifactBatchCreateResponse
var resp *api.Response
var err error
// Retry the batch upload a couple of times
err = retry.Do(func(s *retry.Stats) error {
creation, resp, err = a.APIClient.Artifacts.Create(a.JobID, batch)
if resp != nil && (resp.StatusCode == 401 || resp.StatusCode == 404 || resp.StatusCode == 500) {
s.Break()
}
if err != nil {
logger.Warn("%s (%s)", err, s)
}
return err
}, &retry.Config{Maximum: 10, Interval: 1 * time.Second})
// Did the batch creation eventually fail?
if err != nil {
return nil, err
}
// Save the id and instructions to each artifact
index := 0
for _, id := range creation.ArtifactIDs {
theseArtiacts[index].ID = id
theseArtiacts[index].UploadInstructions = creation.UploadInstructions
index += 1
}
}
return a.Artifacts, nil
}
func (a *ArtifactUploader) Upload() error {
// Create artifact structs for all the files we need to upload
artifacts, err := a.Collect()
if err != nil {
return err
}
if len(artifacts) == 0 {
logger.Info("No files matched paths: %s", a.Paths)
} else {
logger.Info("Found %d files that match \"%s\"", len(artifacts), a.Paths)
err := a.upload(artifacts)
if err != nil {
return err
}
}
return nil
}
func (r *JobRunner) Kill() error {
if !r.cancelled {
logger.Info("Canceling job %s", r.Job.ID)
r.cancelled = true
if r.process != nil {
r.process.Kill()
} else {
logger.Error("No process to kill")
}
}
return nil
}
// Shows the welcome banner and the configuration options used when starting
// this agent.
func (r *AgentPool) ShowBanner() {
welcomeMessage :=
"\n" +
"%s _ _ _ _ _ _ _ _\n" +
" | | (_) | | | | (_) | | |\n" +
" | |__ _ _ _| | __| | | ___| |_ ___ __ _ __ _ ___ _ __ | |_\n" +
" | '_ \\| | | | | |/ _` | |/ / | __/ _ \\ / _` |/ _` |/ _ \\ '_ \\| __|\n" +
" | |_) | |_| | | | (_| | <| | || __/ | (_| | (_| | __/ | | | |_\n" +
" |_.__/ \\__,_|_|_|\\__,_|_|\\_\\_|\\__\\___| \\__,_|\\__, |\\___|_| |_|\\__|\n" +
" __/ |\n" +
" http://buildkite.com/agent |___/\n%s\n"
if logger.ColorsEnabled() {
fmt.Fprintf(logger.OutputPipe(), welcomeMessage, "\x1b[32m", "\x1b[0m")
} else {
fmt.Fprintf(logger.OutputPipe(), welcomeMessage, "", "")
}
logger.Notice("Starting buildkite-agent v%s with PID: %s", Version(), fmt.Sprintf("%d", os.Getpid()))
logger.Notice("The agent source code can be found here: https://github.com/buildkite/agent")
logger.Notice("For questions and support, email us at: [email protected]")
if r.ConfigFilePath != "" {
logger.Info("Configuration loaded from: %s", r.ConfigFilePath)
}
logger.Debug("Bootstrap command: %s", r.AgentConfiguration.BootstrapScript)
logger.Debug("Build path: %s", r.AgentConfiguration.BuildPath)
logger.Debug("Hooks directory: %s", r.AgentConfiguration.HooksPath)
logger.Debug("Plugins directory: %s", r.AgentConfiguration.PluginsPath)
if !r.AgentConfiguration.SSHFingerprintVerification {
logger.Debug("Automatic SSH fingerprint verification has been disabled")
}
if !r.AgentConfiguration.CommandEval {
logger.Debug("Evaluating console commands has been disabled")
}
if !r.AgentConfiguration.RunInPty {
logger.Debug("Running builds within a pseudoterminal (PTY) has been disabled")
}
}
func (a *ArtifactBatchCreator) Create() ([]*api.Artifact, error) {
length := len(a.Artifacts)
chunks := 10
uploaded := []*api.Artifact{}
// Split into the artifacts into chunks so we're not uploading a ton of
// files at once.
for i := 0; i < length; i += chunks {
j := i + chunks
if length < j {
j = length
}
artifacts := a.Artifacts[i:j]
logger.Info("Creating (%d-%d)/%d artifacts", i, j, length)
var u []*api.Artifact
var err error
// Retry the batch upload a couple of times
err = retry.Do(func(s *retry.Stats) error {
u, _, err = a.APIClient.Artifacts.Create(a.JobID, artifacts)
if err != nil {
logger.Warn("%s (%s)", err, s)
}
return err
}, &retry.Config{Maximum: 10, Interval: 1 * time.Second})
if err != nil {
return nil, err
}
uploaded = append(uploaded, u...)
}
return uploaded, nil
}
// Performs a ping, which returns what action the agent should take next.
func (a *AgentWorker) Ping() {
// Update the proc title
a.UpdateProcTitle("pinging")
ping, _, err := a.APIClient.Pings.Get()
if err != nil {
// If a ping fails, we don't really care, because it'll
// ping again after the interval.
logger.Warn("Failed to ping: %s", err)
return
}
// Should we switch endpoints?
if ping.Endpoint != "" && ping.Endpoint != a.Agent.Endpoint {
// Before switching to the new one, do a ping test to make sure it's
// valid. If it is, switch and carry on, otherwise ignore the switch
// for now.
newAPIClient := APIClient{Endpoint: ping.Endpoint, Token: a.Agent.AccessToken}.Create()
newPing, _, err := newAPIClient.Pings.Get()
if err != nil {
logger.Warn("Failed to ping the new endpoint %s - ignoring switch for now (%s)", ping.Endpoint, err)
} else {
// Replace the APIClient and process the new ping
a.APIClient = newAPIClient
a.Agent.Endpoint = ping.Endpoint
ping = newPing
}
}
// Is there a message that should be shown in the logs?
if ping.Message != "" {
logger.Info(ping.Message)
}
// Should the agent disconnect?
if ping.Action == "disconnect" {
a.Stop(false)
return
}
// If we don't have a job, there's nothing to do!
if ping.Job == nil {
// Update the proc title
a.UpdateProcTitle("idle")
return
}
// Update the proc title
a.UpdateProcTitle(fmt.Sprintf("job %s", strings.Split(ping.Job.ID, "-")[0]))
logger.Info("Assigned job %s. Accepting...", ping.Job.ID)
// Accept the job. We'll retry on connection related issues, but if
// Buildkite returns a 422 or 500 for example, we'll just bail out,
// re-ping, and try the whole process again.
var accepted *api.Job
retry.Do(func(s *retry.Stats) error {
accepted, _, err = a.APIClient.Jobs.Accept(ping.Job)
if err != nil {
if api.IsRetryableError(err) {
logger.Warn("%s (%s)", err, s)
} else {
logger.Warn("Buildkite rejected the call to accept the job (%s)", err)
s.Break()
}
}
return err
}, &retry.Config{Maximum: 30, Interval: 1 * time.Second})
// If `accepted` is nil, then the job was never accepted
if accepted == nil {
logger.Error("Failed to accept job")
return
}
// Now that the job has been accepted, we can start it.
a.jobRunner, err = JobRunner{
Endpoint: accepted.Endpoint,
Agent: a.Agent,
AgentConfiguration: a.AgentConfiguration,
Job: accepted,
}.Create()
// Was there an error creating the job runner?
if err != nil {
logger.Error("Failed to initialize job: %s", err)
return
}
// Start running the job
if err = a.jobRunner.Run(); err != nil {
logger.Error("Failed to run job: %s", err)
}
// No more job, no more runner.
a.jobRunner = nil
}
}
}
// Create the API client
client := agent.APIClient{
Endpoint: cfg.Endpoint,
Token: cfg.AgentAccessToken,
}.Create()
// Generate a UUID that will identifiy this pipeline change. We
// do this outside of the retry loop because we want this UUID
// to be the same for each attempt at updating the pipeline.
uuid := api.NewUUID()
// Retry the pipeline upload a few times before giving up
err = retry.Do(func(s *retry.Stats) error {
_, err = client.Pipelines.Upload(cfg.Job, &api.Pipeline{UUID: uuid, Data: input, FileName: filename, Replace: cfg.Replace})
if err != nil {
logger.Warn("%s (%s)", err, s)
}
return err
}, &retry.Config{Maximum: 5, Interval: 1 * time.Second})
if err != nil {
logger.Fatal("Failed to upload and process pipeline: %s", err)
}
logger.Info("Successfully uploaded and parsed pipeline config")
},
}
func (d Download) try() error {
// If we're downloading a file with a path of "pkg/foo.txt" to a folder
// called "pkg", we should merge the two paths together. So, instead of it
// downloading to: destination/pkg/pkg/foo.txt, it will just download to
// destination/pkg/foo.txt
destinationPaths := strings.Split(d.Destination, string(os.PathSeparator))
downloadPaths := strings.Split(d.Path, string(os.PathSeparator))
for i := 0; i < len(downloadPaths); i += 100 {
// If the last part of the destination path matches
// this path in the download, then cut it out.
lastIndex := len(destinationPaths) - 1
// Break if we've gone too far.
if lastIndex == -1 {
break
}
lastPathInDestination := destinationPaths[lastIndex]
if lastPathInDestination == downloadPaths[i] {
destinationPaths = destinationPaths[:lastIndex]
}
}
finalizedDestination := strings.Join(destinationPaths, string(os.PathSeparator))
targetFile := filepath.Join(finalizedDestination, d.Path)
targetDirectory, _ := filepath.Split(targetFile)
// Show a nice message that we're starting to download the file
logger.Debug("Downloading %s to %s", d.URL, targetFile)
// Start by downloading the file
response, err := d.Client.Get(d.URL)
if err != nil {
return fmt.Errorf("Error while downloading %s (%T: %v)", d.URL, err, err)
}
defer response.Body.Close()
// Double check the status
if response.StatusCode/100 != 2 && response.StatusCode/100 != 3 {
if d.DebugHTTP {
responseDump, err := httputil.DumpResponse(response, true)
logger.Debug("\nERR: %s\n%s", err, string(responseDump))
}
return &downloadError{response.Status}
}
// Now make the folder for our file
err = os.MkdirAll(targetDirectory, 0777)
if err != nil {
return fmt.Errorf("Failed to create folder for %s (%T: %v)", targetFile, err, err)
}
// Create a file to handle the file
fileBuffer, err := os.Create(targetFile)
if err != nil {
return fmt.Errorf("Failed to create file %s (%T: %v)", targetFile, err, err)
}
defer fileBuffer.Close()
// Copy the data to the file
bytes, err := io.Copy(fileBuffer, response.Body)
if err != nil {
return fmt.Errorf("Error when copying data %s (%T: %v)", d.URL, err, err)
}
logger.Info("Successfully downloaded \"%s\" %d bytes", d.Path, bytes)
return nil
}
func (p *Process) Start() error {
c, err := shell.CommandFromString(p.Script)
if err != nil {
return err
}
p.command = exec.Command(c.Command, c.Args...)
// Copy the current processes ENV and merge in the new ones. We do this
// so the sub process gets PATH and stuff. We merge our path in over
// the top of the current one so the ENV from Buildkite and the agent
// take precedence over the agent
currentEnv := os.Environ()
p.command.Env = append(currentEnv, p.Env...)
var waitGroup sync.WaitGroup
lineReaderPipe, lineWriterPipe := io.Pipe()
multiWriter := io.MultiWriter(&p.buffer, lineWriterPipe)
logger.Info("Starting to run: %s", c.String())
// Toggle between running in a pty
if p.PTY {
pty, err := StartPTY(p.command)
if err != nil {
p.ExitStatus = "1"
return err
}
p.Pid = p.command.Process.Pid
p.setRunning(true)
waitGroup.Add(1)
go func() {
logger.Debug("[Process] Starting to copy PTY to the buffer")
// Copy the pty to our buffer. This will block until it
// EOF's or something breaks.
_, err = io.Copy(multiWriter, pty)
if e, ok := err.(*os.PathError); ok && e.Err == syscall.EIO {
// We can safely ignore this error, because
// it's just the PTY telling us that it closed
// successfully. See:
// https://github.com/buildkite/agent/pull/34#issuecomment-46080419
err = nil
}
if err != nil {
logger.Error("[Process] PTY output copy failed with error: %T: %v", err, err)
} else {
logger.Debug("[Process] PTY has finished being copied to the buffer")
}
waitGroup.Done()
}()
} else {
p.command.Stdout = multiWriter
p.command.Stderr = multiWriter
p.command.Stdin = nil
err := p.command.Start()
if err != nil {
p.ExitStatus = "1"
return err
}
p.Pid = p.command.Process.Pid
p.setRunning(true)
}
logger.Info("[Process] Process is running with PID: %d", p.Pid)
// Add the line callback routine to the waitGroup
waitGroup.Add(1)
go func() {
logger.Debug("[LineScanner] Starting to read lines")
reader := bufio.NewReader(lineReaderPipe)
var appending []byte
for {
line, isPrefix, err := reader.ReadLine()
if err != nil {
if err == io.EOF {
logger.Debug("[LineScanner] Encountered EOF")
break
}
logger.Error("[LineScanner] Failed to read: (%T: %v)", err, err)
}
// If isPrefix is true, that means we've got a really
// long line incoming, and we'll keep appending to it
// until isPrefix is false (which means the long line
// has ended.
if isPrefix && appending == nil {
logger.Debug("[LineScanner] Line is too long to read, going to buffer it until it finishes")
appending = line
continue
}
// Should we be appending?
if appending != nil {
appending = append(appending, line...)
// No more isPrefix! Line is finished!
if !isPrefix {
logger.Debug("[LineScanner] Finished buffering long line")
line = appending
// Reset appending back to nil
appending = nil
} else {
continue
}
}
go p.LineCallback(string(line))
}
logger.Debug("[LineScanner] Finished")
waitGroup.Done()
}()
// Call the StartCallback
go p.StartCallback()
// Wait until the process has finished. The returned error is nil if the command runs,
// has no problems copying stdin, stdout, and stderr, and exits with a zero exit status.
waitResult := p.command.Wait()
// Close the line writer pipe
lineWriterPipe.Close()
// The process is no longer running at this point
p.setRunning(false)
// Find the exit status of the script
p.ExitStatus = getExitStatus(waitResult)
logger.Info("Process with PID: %d finished with Exit Status: %s", p.Pid, p.ExitStatus)
// Sometimes (in docker containers) io.Copy never seems to finish. This is a mega
// hack around it. If it doesn't finish after 1 second, just continue.
logger.Debug("[Process] Waiting for routines to finish")
err = timeoutWait(&waitGroup)
if err != nil {
logger.Debug("[Process] Timed out waiting for wait group: (%T: %v)", err, err)
}
// No error occurred so we can return nil
return nil
}
func (r *AgentPool) Start() error {
// Show the welcome banner and config options used
r.ShowBanner()
// Create the agent registration API Client
r.APIClient = APIClient{Endpoint: r.Endpoint, Token: r.Token}.Create()
// Create the agent template. We use pass this template to the register
// call, at which point we get back a real agent.
template := r.CreateAgentTemplate()
logger.Info("Registering agent with Buildkite...")
// Register the agent
registered, err := r.RegisterAgent(template)
if err != nil {
logger.Fatal("%s", err)
}
logger.Info("Successfully registered agent \"%s\" with meta-data %s", registered.Name, registered.MetaData)
logger.Debug("Ping interval: %ds", registered.PingInterval)
logger.Debug("Heartbeat interval: %ds", registered.HearbeatInterval)
// Now that we have a registereted agent, we can connect it to the API,
// and start running jobs.
worker := AgentWorker{Agent: registered, AgentConfiguration: r.AgentConfiguration, Endpoint: r.Endpoint}.Create()
logger.Info("Connecting to Buildkite...")
if err := worker.Connect(); err != nil {
logger.Fatal("%s", err)
}
logger.Info("Agent successfully connected")
logger.Info("You can press Ctrl-C to stop the agent")
logger.Info("Waiting for work...")
// Start a signalwatcher so we can monitor signals and handle shutdowns
signalwatcher.Watch(func(sig signalwatcher.Signal) {
if sig == signalwatcher.QUIT {
logger.Debug("Received signal `%s`", sig.String())
worker.Stop(false)
} else if sig == signalwatcher.TERM || sig == signalwatcher.INT {
logger.Debug("Received signal `%s`", sig.String())
worker.Stop(true)
} else {
logger.Debug("Ignoring signal `%s`", sig.String())
}
})
// Starts the agent worker. This will block until the agent has
// finished or is stopped.
if err := worker.Start(); err != nil {
logger.Fatal("%s", err)
}
// Now that the agent has stopped, we can disconnect it
logger.Info("Disconnecting %s...", worker.Agent.Name)
worker.Disconnect()
return nil
}
loader := cliconfig.Loader{CLI: c, Config: &cfg}
if err := loader.Load(); err != nil {
logger.Fatal("%s", err)
}
// Setup the any global configuration options
HandleGlobalFlags(cfg)
// Find the pipeline file either from STDIN or the first
// argument
var input []byte
var err error
var filename string
if cfg.FilePath != "" {
logger.Info("Reading pipeine config from \"%s\"", cfg.FilePath)
filename = filepath.Base(cfg.FilePath)
input, err = ioutil.ReadFile(cfg.FilePath)
if err != nil {
logger.Fatal("Failed to read file: %s", err)
}
} else if stdin.IsPipe() {
logger.Info("Reading pipeine config from STDIN")
input, err = ioutil.ReadAll(os.Stdin)
if err != nil {
logger.Fatal("Failed to read from STDIN: %s", err)
}
} else {
logger.Info("Searching for pipeline config...")
func (a *ArtifactUploader) upload(artifacts []*api.Artifact) error {
var uploader Uploader
// Determine what uploader to use
if a.Destination != "" {
if strings.HasPrefix(a.Destination, "s3://") {
uploader = new(S3Uploader)
} else {
return errors.New("Unknown upload destination: " + a.Destination)
}
} else {
uploader = new(FormUploader)
}
// Setup the uploader
err := uploader.Setup(a.Destination)
if err != nil {
return err
}
// Set the URL's of the artifacts based on the uploader
for _, artifact := range artifacts {
artifact.URL = uploader.URL(artifact)
}
// Create the artifacts on Buildkite
batchCreator := ArtifactBatchCreator{
APIClient: a.APIClient,
JobID: a.JobID,
Artifacts: artifacts,
}
artifacts, err = batchCreator.Create()
if err != nil {
return err
}
p := pool.New(pool.MaxConcurrencyLimit)
errors := []error{}
for _, artifact := range artifacts {
// Create new instance of the artifact for the goroutine
// See: http://golang.org/doc/effective_go.html#channels
artifact := artifact
p.Spawn(func() {
// Show a nice message that we're starting to upload the file
logger.Info("Uploading \"%s\" %d bytes", artifact.Path, artifact.FileSize)
// Upload the artifact and then set the state depending
// on whether or not it passed. We'll retry the upload
// a couple of times before giving up.
err = retry.Do(func(s *retry.Stats) error {
err := uploader.Upload(artifact)
if err != nil {
logger.Warn("%s (%s)", err, s)
}
return err
}, &retry.Config{Maximum: 10, Interval: 1 * time.Second})
if err != nil {
artifact.State = "error"
logger.Error("Error uploading artifact \"%s\": %s", artifact.Path, err)
// Track the error that was raised
p.Lock()
errors = append(errors, err)
p.Unlock()
} else {
artifact.State = "finished"
}
// Update the state of the artifact on Buildkite, we
// retry this as well.
err = retry.Do(func(s *retry.Stats) error {
_, _, err = a.APIClient.Artifacts.Update(a.JobID, artifact)
if err != nil {
logger.Warn("%s (%s)", err, s)
}
return err
}, &retry.Config{Maximum: 10, Interval: 1 * time.Second})
if err != nil {
logger.Error("Error marking artifact %s as uploaded: %s", artifact.Path, err)
// Track the error that was raised
p.Lock()
errors = append(errors, err)
p.Unlock()
}
})
}
p.Wait()
if len(errors) > 0 {
logger.Fatal("There were errors with uploading some of the artifacts")
}
return nil
}
func (a *ArtifactUploader) upload(artifacts []*api.Artifact) error {
var uploader Uploader
// Determine what uploader to use
if a.Destination != "" {
if strings.HasPrefix(a.Destination, "s3://") {
uploader = new(S3Uploader)
} else {
return errors.New("Unknown upload destination: " + a.Destination)
}
} else {
uploader = new(FormUploader)
}
// Setup the uploader
err := uploader.Setup(a.Destination, a.APIClient.DebugHTTP)
if err != nil {
return err
}
// Set the URL's of the artifacts based on the uploader
for _, artifact := range artifacts {
artifact.URL = uploader.URL(artifact)
}
// Create the artifacts on Buildkite
batchCreator := ArtifactBatchCreator{
APIClient: a.APIClient,
JobID: a.JobID,
Artifacts: artifacts,
UploadDestination: a.Destination,
}
artifacts, err = batchCreator.Create()
if err != nil {
return err
}
// Prepare a concurrency pool to upload the artifacts
p := pool.New(pool.MaxConcurrencyLimit)
errors := []error{}
// Create a wait group so we can make sure the uploader waits for all
// the artifact states to upload before finishing
var stateUploaderWaitGroup sync.WaitGroup
stateUploaderWaitGroup.Add(1)
// A map to keep track of artifact states and how many we've uploaded
artifactsStates := make(map[string]string)
artifactStatesUploaded := 0
// Spin up a gourtine that'll uploading artifact statuses every few
// seconds in batches
go func() {
for artifactStatesUploaded < len(artifacts) {
statesToUpload := make(map[string]string)
// Grab all the states we need to upload, and remove
// them from the tracking map
for id, state := range artifactsStates {
statesToUpload[id] = state
delete(artifactsStates, id)
}
if len(statesToUpload) > 0 {
artifactStatesUploaded += len(statesToUpload)
for id, state := range statesToUpload {
logger.Debug("Artifact `%s` has state `%s`", id, state)
}
// Update the states of the artifacts in bulk.
err = retry.Do(func(s *retry.Stats) error {
_, err = a.APIClient.Artifacts.Update(a.JobID, statesToUpload)
if err != nil {
logger.Warn("%s (%s)", err, s)
}
return err
}, &retry.Config{Maximum: 10, Interval: 1 * time.Second})
if err != nil {
logger.Error("Error uploading artifact states: %s", err)
// Track the error that was raised
p.Lock()
errors = append(errors, err)
p.Unlock()
}
logger.Debug("Uploaded %d artfact states (%d/%d)", len(statesToUpload), artifactStatesUploaded, len(artifacts))
}
// Check again for states to upload in a few seconds
time.Sleep(1 * time.Second)
}
stateUploaderWaitGroup.Done()
}()
for _, artifact := range artifacts {
// Create new instance of the artifact for the goroutine
// See: http://golang.org/doc/effective_go.html#channels
artifact := artifact
p.Spawn(func() {
// Show a nice message that we're starting to upload the file
logger.Info("Uploading \"%s\" %d bytes", artifact.Path, artifact.FileSize)
// Upload the artifact and then set the state depending
// on whether or not it passed. We'll retry the upload
// a couple of times before giving up.
err = retry.Do(func(s *retry.Stats) error {
err := uploader.Upload(artifact)
if err != nil {
logger.Warn("%s (%s)", err, s)
}
return err
}, &retry.Config{Maximum: 10, Interval: 1 * time.Second})
var state string
// Did the upload eventually fail?
if err != nil {
logger.Error("Error uploading artifact \"%s\": %s", artifact.Path, err)
// Track the error that was raised
p.Lock()
errors = append(errors, err)
p.Unlock()
state = "error"
} else {
state = "finished"
}
artifactsStates[artifact.ID] = state
})
}
// Wait for the pool to finish
p.Wait()
// Wait for the statuses to finish uploading
stateUploaderWaitGroup.Wait()
if len(errors) > 0 {
logger.Fatal("There were errors with uploading some of the artifacts")
}
return nil
}
func (a *ArtifactDownloader) Download() error {
// Turn the download destination into an absolute path and confirm it exists
downloadDestination, _ := filepath.Abs(a.Destination)
fileInfo, err := os.Stat(downloadDestination)
if err != nil {
logger.Fatal("Could not find information about destination: %s", downloadDestination)
}
if !fileInfo.IsDir() {
logger.Fatal("%s is not a directory", downloadDestination)
}
// Find the artifacts that we want to download
searcher := ArtifactSearcher{BuildID: a.BuildID, APIClient: a.APIClient}
artifacts, err := searcher.Search(a.Query, a.Step)
if err != nil {
return err
}
artifactCount := len(artifacts)
if artifactCount == 0 {
logger.Info("No artifacts found for downloading")
} else {
logger.Info("Found %d artifacts. Starting to download to: %s", artifactCount, downloadDestination)
p := pool.New(pool.MaxConcurrencyLimit)
errors := []error{}
for _, artifact := range artifacts {
// Create new instance of the artifact for the goroutine
// See: http://golang.org/doc/effective_go.html#channels
artifact := artifact
p.Spawn(func() {
var err error
// Handle downloading from S3 and GS
if strings.HasPrefix(artifact.UploadDestination, "s3://") {
err = S3Downloader{
Path: artifact.Path,
Bucket: artifact.UploadDestination,
Destination: downloadDestination,
Retries: 5,
DebugHTTP: a.APIClient.DebugHTTP,
}.Start()
} else if strings.HasPrefix(artifact.UploadDestination, "gs://") {
err = GSDownloader{
Path: artifact.Path,
Bucket: artifact.UploadDestination,
Destination: downloadDestination,
Retries: 5,
DebugHTTP: a.APIClient.DebugHTTP,
}.Start()
} else {
err = Download{
URL: artifact.URL,
Path: artifact.Path,
Destination: downloadDestination,
Retries: 5,
DebugHTTP: a.APIClient.DebugHTTP,
}.Start()
}
// If the downloaded encountered an error, lock
// the pool, collect it, then unlock the pool
// again.
if err != nil {
logger.Error("Failed to download artifact: %s", err)
p.Lock()
errors = append(errors, err)
p.Unlock()
}
})
}
p.Wait()
if len(errors) > 0 {
logger.Fatal("There were errors with downloading some of the artifacts")
}
}
return nil
}