func main() {
client, err := controller.NewClient("", os.Getenv("CONTROLLER_AUTH_KEY"))
if err != nil {
log.Fatalln("Unable to connect to controller:", err)
}
appName := os.Args[1]
app, err := client.GetApp(appName)
if err == controller.ErrNotFound {
log.Fatalf("Unknown app %q", appName)
} else if err != nil {
log.Fatalln("Error retrieving app:", err)
}
prevRelease, err := client.GetAppRelease(app.Name)
if err == controller.ErrNotFound {
prevRelease = &ct.Release{}
} else if err != nil {
log.Fatalln("Error getting current app release:", err)
}
fmt.Printf("-----> Building %s...\n", app.Name)
var output bytes.Buffer
slugURL := fmt.Sprintf("%s/%s.tgz", blobstoreURL, random.UUID())
cmd := exec.Command(exec.DockerImage(os.Getenv("SLUGBUILDER_IMAGE_URI")), slugURL)
cmd.Stdout = io.MultiWriter(os.Stdout, &output)
cmd.Stderr = os.Stderr
if len(prevRelease.Env) > 0 {
stdin, err := cmd.StdinPipe()
if err != nil {
log.Fatalln(err)
}
go appendEnvDir(os.Stdin, stdin, prevRelease.Env)
} else {
cmd.Stdin = os.Stdin
}
cmd.Env = make(map[string]string)
cmd.Env["BUILD_CACHE_URL"] = fmt.Sprintf("%s/%s-cache.tgz", blobstoreURL, app.ID)
if buildpackURL, ok := prevRelease.Env["BUILDPACK_URL"]; ok {
cmd.Env["BUILDPACK_URL"] = buildpackURL
}
if err := cmd.Run(); err != nil {
log.Fatalln("Build failed:", err)
}
var types []string
if match := typesPattern.FindSubmatch(output.Bytes()); match != nil {
types = strings.Split(string(match[1]), ", ")
}
fmt.Printf("-----> Creating release...\n")
artifact := &ct.Artifact{Type: "docker", URI: os.Getenv("SLUGRUNNER_IMAGE_URI")}
if err := client.CreateArtifact(artifact); err != nil {
log.Fatalln("Error creating artifact:", err)
}
release := &ct.Release{
ArtifactID: artifact.ID,
Env: prevRelease.Env,
}
procs := make(map[string]ct.ProcessType)
for _, t := range types {
proc := prevRelease.Processes[t]
proc.Cmd = []string{"start", t}
if t == "web" {
proc.Ports = []ct.Port{{
Port: 8080,
Proto: "tcp",
Service: &host.Service{
Name: app.Name + "-web",
Create: true,
Check: &host.HealthCheck{Type: "tcp"},
},
}}
}
procs[t] = proc
}
release.Processes = procs
if release.Env == nil {
release.Env = make(map[string]string)
}
release.Env["SLUG_URL"] = slugURL
if err := client.CreateRelease(release); err != nil {
log.Fatalln("Error creating release:", err)
}
if err := client.DeployAppRelease(app.Name, release.ID); err != nil {
log.Fatalln("Error deploying app release:", err)
}
fmt.Println("=====> Application deployed")
// If the app is new and the web process type exists,
// it should scale to one process after the release is created.
if _, ok := procs["web"]; ok && prevRelease.ID == "" {
formation := &ct.Formation{
AppID: app.ID,
ReleaseID: release.ID,
Processes: map[string]int{"web": 1},
}
if err := client.PutFormation(formation); err != nil {
log.Fatalln("Error putting formation:", err)
}
fmt.Println("=====> Added default web=1 formation")
}
}
func (s *CLISuite) TestSlugReleaseGarbageCollection(t *c.C) {
client := s.controllerClient(t)
// create app with gc.max_inactive_slug_releases=3
maxInactiveSlugReleases := 3
app := &ct.App{Meta: map[string]string{"gc.max_inactive_slug_releases": strconv.Itoa(maxInactiveSlugReleases)}}
t.Assert(client.CreateApp(app), c.IsNil)
// create an image artifact
imageArtifact := s.createArtifact(t, "test-apps")
// create 5 slug artifacts
tmp, err := ioutil.TempFile("", "squashfs-")
t.Assert(err, c.IsNil)
defer os.Remove(tmp.Name())
defer tmp.Close()
t.Assert(exec.Command("mksquashfs", t.MkDir(), tmp.Name(), "-noappend").Run(), c.IsNil)
slug, err := ioutil.ReadAll(tmp)
t.Assert(err, c.IsNil)
slugHash := sha512.Sum512(slug)
slugs := []string{
"http://blobstore.discoverd/layer/1.squashfs",
"http://blobstore.discoverd/layer/2.squashfs",
"http://blobstore.discoverd/layer/3.squashfs",
"http://blobstore.discoverd/layer/4.squashfs",
"http://blobstore.discoverd/layer/5.squashfs",
}
slugArtifacts := make([]*ct.Artifact, len(slugs))
put := func(url string, data []byte) {
req, err := http.NewRequest("PUT", url, bytes.NewReader(data))
t.Assert(err, c.IsNil)
res, err := http.DefaultClient.Do(req)
t.Assert(err, c.IsNil)
res.Body.Close()
t.Assert(res.StatusCode, c.Equals, http.StatusOK)
}
for i, layerURL := range slugs {
manifest := &ct.ImageManifest{
Type: ct.ImageManifestTypeV1,
Rootfs: []*ct.ImageRootfs{{
Layers: []*ct.ImageLayer{{
ID: strconv.Itoa(i + 1),
Type: ct.ImageLayerTypeSquashfs,
Length: int64(len(slug)),
Hashes: map[string]string{"sha512": hex.EncodeToString(slugHash[:])},
}},
}},
}
data := manifest.RawManifest()
url := fmt.Sprintf("http://blobstore.discoverd/image/%s.json", manifest.ID())
put(url, data)
put(layerURL, slug)
artifact := &ct.Artifact{
Type: ct.ArtifactTypeFlynn,
URI: url,
Meta: map[string]string{"blobstore": "true"},
RawManifest: data,
Hashes: manifest.Hashes(),
Size: int64(len(data)),
LayerURLTemplate: "http://blobstore.discoverd/layer/{id}.squashfs",
}
t.Assert(client.CreateArtifact(artifact), c.IsNil)
slugArtifacts[i] = artifact
}
// create 6 releases, the second being scaled up and having the
// same slug as the third (so prevents the slug being deleted)
releases := make([]*ct.Release, 6)
for i, r := range []struct {
slug *ct.Artifact
active bool
}{
{slugArtifacts[0], false},
{slugArtifacts[1], true},
{slugArtifacts[1], false},
{slugArtifacts[2], false},
{slugArtifacts[3], false},
{slugArtifacts[4], false},
} {
release := &ct.Release{
ArtifactIDs: []string{imageArtifact.ID, r.slug.ID},
Processes: map[string]ct.ProcessType{
"app": {Args: []string{"/bin/pingserv"}, Ports: []ct.Port{{Proto: "tcp"}}},
},
Meta: map[string]string{"git": "true"},
}
t.Assert(client.CreateRelease(release), c.IsNil)
procs := map[string]int{"app": 0}
if r.active {
procs["app"] = 1
}
t.Assert(client.PutFormation(&ct.Formation{
AppID: app.ID,
ReleaseID: release.ID,
Processes: procs,
}), c.IsNil)
releases[i] = release
}
// scale the last release so we can deploy it
lastRelease := releases[len(releases)-1]
watcher, err := client.WatchJobEvents(app.ID, lastRelease.ID)
t.Assert(err, c.IsNil)
defer watcher.Close()
t.Assert(client.PutFormation(&ct.Formation{
AppID: app.ID,
ReleaseID: lastRelease.ID,
Processes: map[string]int{"app": 1},
}), c.IsNil)
t.Assert(watcher.WaitFor(ct.JobEvents{"app": ct.JobUpEvents(1)}, scaleTimeout, nil), c.IsNil)
t.Assert(client.SetAppRelease(app.ID, lastRelease.ID), c.IsNil)
// subscribe to garbage collection events
gcEvents := make(chan *ct.Event)
stream, err := client.StreamEvents(ct.StreamEventsOptions{
AppID: app.ID,
ObjectTypes: []ct.EventType{ct.EventTypeAppGarbageCollection},
}, gcEvents)
t.Assert(err, c.IsNil)
defer stream.Close()
// deploy a new release with the same slug as the last release
timeoutCh := make(chan struct{})
time.AfterFunc(5*time.Minute, func() { close(timeoutCh) })
newRelease := *lastRelease
newRelease.ID = ""
t.Assert(client.CreateRelease(&newRelease), c.IsNil)
t.Assert(client.DeployAppRelease(app.ID, newRelease.ID, timeoutCh), c.IsNil)
// wait for garbage collection
select {
case event, ok := <-gcEvents:
if !ok {
t.Fatalf("event stream closed unexpectedly: %s", stream.Err())
}
var e ct.AppGarbageCollectionEvent
t.Assert(json.Unmarshal(event.Data, &e), c.IsNil)
if e.Error != "" {
t.Fatalf("garbage collection failed: %s", e.Error)
}
case <-time.After(60 * time.Second):
t.Fatal("timed out waiting for garbage collection")
}
// check we have 4 distinct slug releases (so 5 in total, only 3 are
// inactive)
list, err := client.AppReleaseList(app.ID)
t.Assert(err, c.IsNil)
t.Assert(list, c.HasLen, maxInactiveSlugReleases+2)
distinctSlugs := make(map[string]struct{}, len(list))
for _, release := range list {
t.Assert(release.ArtifactIDs, c.HasLen, 2)
distinctSlugs[release.ArtifactIDs[1]] = struct{}{}
}
t.Assert(distinctSlugs, c.HasLen, maxInactiveSlugReleases+1)
// check the first and third releases got deleted, but the rest remain
assertDeleted := func(release *ct.Release, deleted bool) {
_, err := client.GetRelease(release.ID)
if deleted {
t.Assert(err, c.Equals, controller.ErrNotFound)
} else {
t.Assert(err, c.IsNil)
}
}
assertDeleted(releases[0], true)
assertDeleted(releases[1], false)
assertDeleted(releases[2], true)
assertDeleted(releases[3], false)
assertDeleted(releases[4], false)
assertDeleted(releases[5], false)
assertDeleted(&newRelease, false)
// check the first slug got deleted, but the rest remain
s.assertURI(t, slugs[0], http.StatusNotFound)
for i := 1; i < len(slugs); i++ {
s.assertURI(t, slugs[i], http.StatusOK)
}
}
func main() {
client, err := controller.NewClient("", os.Getenv("CONTROLLER_KEY"))
if err != nil {
log.Fatalln("Unable to connect to controller:", err)
}
appName := os.Args[1]
app, err := client.GetApp(appName)
if err == controller.ErrNotFound {
log.Fatalf("Unknown app %q", appName)
} else if err != nil {
log.Fatalln("Error retrieving app:", err)
}
prevRelease, err := client.GetAppRelease(app.Name)
if err == controller.ErrNotFound {
prevRelease = &ct.Release{}
} else if err != nil {
log.Fatalln("Error getting current app release:", err)
}
fmt.Printf("-----> Building %s...\n", app.Name)
var output bytes.Buffer
slugURL := fmt.Sprintf("%s/%s.tgz", blobstoreURL, random.UUID())
cmd := exec.Command(exec.DockerImage(os.Getenv("SLUGBUILDER_IMAGE_URI")), slugURL)
cmd.Stdout = io.MultiWriter(os.Stdout, &output)
cmd.Stderr = os.Stderr
cmd.Meta = map[string]string{
"flynn-controller.app": app.ID,
"flynn-controller.app_name": app.Name,
"flynn-controller.release": prevRelease.ID,
"flynn-controller.type": "slugbuilder",
}
if len(prevRelease.Env) > 0 {
stdin, err := cmd.StdinPipe()
if err != nil {
log.Fatalln(err)
}
go appendEnvDir(os.Stdin, stdin, prevRelease.Env)
} else {
cmd.Stdin = os.Stdin
}
cmd.Env = make(map[string]string)
cmd.Env["BUILD_CACHE_URL"] = fmt.Sprintf("%s/%s-cache.tgz", blobstoreURL, app.ID)
if buildpackURL, ok := prevRelease.Env["BUILDPACK_URL"]; ok {
cmd.Env["BUILDPACK_URL"] = buildpackURL
}
for _, k := range []string{"SSH_CLIENT_KEY", "SSH_CLIENT_HOSTS"} {
if v := os.Getenv(k); v != "" {
cmd.Env[k] = v
}
}
if err := cmd.Run(); err != nil {
log.Fatalln("Build failed:", err)
}
var types []string
if match := typesPattern.FindSubmatch(output.Bytes()); match != nil {
types = strings.Split(string(match[1]), ", ")
}
fmt.Printf("-----> Creating release...\n")
artifact := &ct.Artifact{Type: "docker", URI: os.Getenv("SLUGRUNNER_IMAGE_URI")}
if err := client.CreateArtifact(artifact); err != nil {
log.Fatalln("Error creating artifact:", err)
}
release := &ct.Release{
ArtifactID: artifact.ID,
Env: prevRelease.Env,
}
procs := make(map[string]ct.ProcessType)
for _, t := range types {
proc := prevRelease.Processes[t]
proc.Cmd = []string{"start", t}
if t == "web" {
proc.Ports = []ct.Port{{
Port: 8080,
Proto: "tcp",
Service: &host.Service{
Name: app.Name + "-web",
Create: true,
Check: &host.HealthCheck{Type: "tcp"},
},
}}
}
procs[t] = proc
}
release.Processes = procs
if release.Env == nil {
release.Env = make(map[string]string)
}
release.Env["SLUG_URL"] = slugURL
if err := client.CreateRelease(release); err != nil {
log.Fatalln("Error creating release:", err)
}
if err := client.DeployAppRelease(app.Name, release.ID); err != nil {
log.Fatalln("Error deploying app release:", err)
}
fmt.Println("=====> Application deployed")
if needsDefaultScale(app.ID, prevRelease.ID, procs, client) {
formation := &ct.Formation{
AppID: app.ID,
ReleaseID: release.ID,
Processes: map[string]int{"web": 1},
}
watcher, err := client.WatchJobEvents(app.ID, release.ID)
if err != nil {
log.Fatalln("Error streaming job events", err)
return
}
defer watcher.Close()
if err := client.PutFormation(formation); err != nil {
log.Fatalln("Error putting formation:", err)
}
fmt.Println("=====> Waiting for web job to start...")
err = watcher.WaitFor(ct.JobEvents{"web": {"up": 1}}, scaleTimeout, func(e *ct.Job) error {
switch e.State {
case "up":
fmt.Println("=====> Default web formation scaled to 1")
case "down", "crashed":
return fmt.Errorf("Failed to scale web process type")
}
return nil
})
if err != nil {
log.Fatalln(err.Error())
}
}
}
func (s *CLISuite) TestSlugReleaseGarbageCollection(t *c.C) {
client := s.controllerClient(t)
// create app with gc.max_inactive_slug_releases=3
maxInactiveSlugReleases := 3
app := &ct.App{Meta: map[string]string{"gc.max_inactive_slug_releases": strconv.Itoa(maxInactiveSlugReleases)}}
t.Assert(client.CreateApp(app), c.IsNil)
// create an image artifact
imageArtifact := &ct.Artifact{Type: host.ArtifactTypeDocker, URI: imageURIs["test-apps"]}
t.Assert(client.CreateArtifact(imageArtifact), c.IsNil)
// create 5 slug artifacts
var slug bytes.Buffer
gz := gzip.NewWriter(&slug)
t.Assert(tar.NewWriter(gz).Close(), c.IsNil)
t.Assert(gz.Close(), c.IsNil)
slugs := []string{
"http://blobstore.discoverd/1/slug.tgz",
"http://blobstore.discoverd/2/slug.tgz",
"http://blobstore.discoverd/3/slug.tgz",
"http://blobstore.discoverd/4/slug.tgz",
"http://blobstore.discoverd/5/slug.tgz",
}
slugArtifacts := make([]*ct.Artifact, len(slugs))
for i, uri := range slugs {
req, err := http.NewRequest("PUT", uri, bytes.NewReader(slug.Bytes()))
t.Assert(err, c.IsNil)
res, err := http.DefaultClient.Do(req)
t.Assert(err, c.IsNil)
res.Body.Close()
t.Assert(res.StatusCode, c.Equals, http.StatusOK)
artifact := &ct.Artifact{
Type: host.ArtifactTypeFile,
URI: uri,
Meta: map[string]string{"blobstore": "true"},
}
t.Assert(client.CreateArtifact(artifact), c.IsNil)
slugArtifacts[i] = artifact
}
// create 6 releases, the second being scaled up and having the
// same slug as the third (so prevents the slug being deleted)
releases := make([]*ct.Release, 6)
for i, r := range []struct {
slug *ct.Artifact
active bool
}{
{slugArtifacts[0], false},
{slugArtifacts[1], true},
{slugArtifacts[1], false},
{slugArtifacts[2], false},
{slugArtifacts[3], false},
{slugArtifacts[4], false},
} {
release := &ct.Release{
ArtifactIDs: []string{imageArtifact.ID, r.slug.ID},
Processes: map[string]ct.ProcessType{
"app": {Args: []string{"/bin/pingserv"}, Ports: []ct.Port{{Proto: "tcp"}}},
},
}
t.Assert(client.CreateRelease(release), c.IsNil)
procs := map[string]int{"app": 0}
if r.active {
procs["app"] = 1
}
t.Assert(client.PutFormation(&ct.Formation{
AppID: app.ID,
ReleaseID: release.ID,
Processes: procs,
}), c.IsNil)
releases[i] = release
}
// scale the last release so we can deploy it
lastRelease := releases[len(releases)-1]
watcher, err := client.WatchJobEvents(app.ID, lastRelease.ID)
t.Assert(err, c.IsNil)
defer watcher.Close()
t.Assert(client.PutFormation(&ct.Formation{
AppID: app.ID,
ReleaseID: lastRelease.ID,
Processes: map[string]int{"app": 1},
}), c.IsNil)
t.Assert(watcher.WaitFor(ct.JobEvents{"app": ct.JobUpEvents(1)}, scaleTimeout, nil), c.IsNil)
t.Assert(client.SetAppRelease(app.ID, lastRelease.ID), c.IsNil)
// subscribe to garbage collection events
gcEvents := make(chan *ct.Event)
stream, err := client.StreamEvents(ct.StreamEventsOptions{
AppID: app.ID,
ObjectTypes: []ct.EventType{ct.EventTypeAppGarbageCollection},
}, gcEvents)
t.Assert(err, c.IsNil)
defer stream.Close()
// deploy a new release with the same slug as the last release
timeoutCh := make(chan struct{})
time.AfterFunc(5*time.Minute, func() { close(timeoutCh) })
newRelease := *lastRelease
newRelease.ID = ""
t.Assert(client.CreateRelease(&newRelease), c.IsNil)
t.Assert(client.DeployAppRelease(app.ID, newRelease.ID, timeoutCh), c.IsNil)
// wait for garbage collection
select {
case event, ok := <-gcEvents:
if !ok {
t.Fatalf("event stream closed unexpectedly: %s", stream.Err())
}
var e ct.AppGarbageCollectionEvent
t.Assert(json.Unmarshal(event.Data, &e), c.IsNil)
if e.Error != "" {
t.Fatalf("garbage collection failed: %s", e.Error)
}
case <-time.After(60 * time.Second):
t.Fatal("timed out waiting for garbage collection")
}
// check we have 4 distinct slug releases (so 5 in total, only 3 are
// inactive)
list, err := client.AppReleaseList(app.ID)
t.Assert(err, c.IsNil)
t.Assert(list, c.HasLen, maxInactiveSlugReleases+2)
distinctSlugs := make(map[string]struct{}, len(list))
for _, release := range list {
files := release.FileArtifactIDs()
t.Assert(files, c.HasLen, 1)
distinctSlugs[files[0]] = struct{}{}
}
t.Assert(distinctSlugs, c.HasLen, maxInactiveSlugReleases+1)
// check the first and third releases got deleted, but the rest remain
assertDeleted := func(release *ct.Release, deleted bool) {
_, err := client.GetRelease(release.ID)
if deleted {
t.Assert(err, c.Equals, controller.ErrNotFound)
} else {
t.Assert(err, c.IsNil)
}
}
assertDeleted(releases[0], true)
assertDeleted(releases[1], false)
assertDeleted(releases[2], true)
assertDeleted(releases[3], false)
assertDeleted(releases[4], false)
assertDeleted(releases[5], false)
assertDeleted(&newRelease, false)
// check the first slug got deleted, but the rest remain
s.assertURI(t, slugs[0], http.StatusNotFound)
for i := 1; i < len(slugs); i++ {
s.assertURI(t, slugs[i], http.StatusOK)
}
}
func main() {
client, err := controller.NewClient("", os.Getenv("CONTROLLER_KEY"))
if err != nil {
log.Fatalln("Unable to connect to controller:", err)
}
usage := `
Usage: flynn-receiver <app> <rev> [-e <var>=<val>]... [-m <key>=<val>]...
Options:
-e,--env <var>=<val>
-m,--meta <key>=<val>
`[1:]
args, _ := docopt.Parse(usage, nil, true, version.String(), false)
appName := args.String["<app>"]
env, err := parsePairs(args, "--env")
if err != nil {
log.Fatal(err)
}
meta, err := parsePairs(args, "--meta")
if err != nil {
log.Fatal(err)
}
app, err := client.GetApp(appName)
if err == controller.ErrNotFound {
log.Fatalf("Unknown app %q", appName)
} else if err != nil {
log.Fatalln("Error retrieving app:", err)
}
prevRelease, err := client.GetAppRelease(app.Name)
if err == controller.ErrNotFound {
prevRelease = &ct.Release{}
} else if err != nil {
log.Fatalln("Error getting current app release:", err)
}
fmt.Printf("-----> Building %s...\n", app.Name)
jobEnv := make(map[string]string)
jobEnv["BUILD_CACHE_URL"] = fmt.Sprintf("%s/%s-cache.tgz", blobstoreURL, app.ID)
if buildpackURL, ok := env["BUILDPACK_URL"]; ok {
jobEnv["BUILDPACK_URL"] = buildpackURL
} else if buildpackURL, ok := prevRelease.Env["BUILDPACK_URL"]; ok {
jobEnv["BUILDPACK_URL"] = buildpackURL
}
for _, k := range []string{"SSH_CLIENT_KEY", "SSH_CLIENT_HOSTS"} {
if v := os.Getenv(k); v != "" {
jobEnv[k] = v
}
}
slugURL := fmt.Sprintf("%s/%s.tgz", blobstoreURL, random.UUID())
cmd := exec.Job(exec.DockerImage(os.Getenv("SLUGBUILDER_IMAGE_URI")), &host.Job{
Config: host.ContainerConfig{
Cmd: []string{slugURL},
Env: jobEnv,
Stdin: true,
DisableLog: true,
},
Partition: "background",
Metadata: map[string]string{
"flynn-controller.app": app.ID,
"flynn-controller.app_name": app.Name,
"flynn-controller.release": prevRelease.ID,
"flynn-controller.type": "slugbuilder",
},
})
var output bytes.Buffer
cmd.Stdout = io.MultiWriter(os.Stdout, &output)
cmd.Stderr = os.Stderr
if len(prevRelease.Env) > 0 {
stdin, err := cmd.StdinPipe()
if err != nil {
log.Fatalln(err)
}
go appendEnvDir(os.Stdin, stdin, prevRelease.Env)
} else {
cmd.Stdin = os.Stdin
}
if err := cmd.Run(); err != nil {
log.Fatalln("Build failed:", err)
}
var types []string
if match := typesPattern.FindSubmatch(output.Bytes()); match != nil {
types = strings.Split(string(match[1]), ", ")
}
fmt.Printf("-----> Creating release...\n")
artifact := &ct.Artifact{Type: "docker", URI: os.Getenv("SLUGRUNNER_IMAGE_URI")}
if err := client.CreateArtifact(artifact); err != nil {
log.Fatalln("Error creating artifact:", err)
}
release := &ct.Release{
ArtifactID: artifact.ID,
Env: prevRelease.Env,
Meta: prevRelease.Meta,
}
if release.Meta == nil {
release.Meta = make(map[string]string, len(meta))
}
if release.Env == nil {
release.Env = make(map[string]string, len(env))
}
for k, v := range env {
release.Env[k] = v
}
for k, v := range meta {
release.Meta[k] = v
}
procs := make(map[string]ct.ProcessType)
for _, t := range types {
proc := prevRelease.Processes[t]
proc.Cmd = []string{"start", t}
if t == "web" || strings.HasSuffix(t, "-web") {
proc.Service = app.Name + "-" + t
proc.Ports = []ct.Port{{
Port: 8080,
Proto: "tcp",
Service: &host.Service{
Name: proc.Service,
Create: true,
Check: &host.HealthCheck{Type: "tcp"},
},
}}
}
procs[t] = proc
}
release.Processes = procs
if release.Env == nil {
release.Env = make(map[string]string)
}
release.Env["SLUG_URL"] = slugURL
if err := client.CreateRelease(release); err != nil {
log.Fatalln("Error creating release:", err)
}
if err := client.DeployAppRelease(app.Name, release.ID); err != nil {
log.Fatalln("Error deploying app release:", err)
}
fmt.Println("=====> Application deployed")
if needsDefaultScale(app.ID, prevRelease.ID, procs, client) {
formation := &ct.Formation{
AppID: app.ID,
ReleaseID: release.ID,
Processes: map[string]int{"web": 1},
}
watcher, err := client.WatchJobEvents(app.ID, release.ID)
if err != nil {
log.Fatalln("Error streaming job events", err)
return
}
defer watcher.Close()
if err := client.PutFormation(formation); err != nil {
log.Fatalln("Error putting formation:", err)
}
fmt.Println("=====> Waiting for web job to start...")
err = watcher.WaitFor(ct.JobEvents{"web": ct.JobUpEvents(1)}, scaleTimeout, func(e *ct.Job) error {
switch e.State {
case ct.JobStateUp:
fmt.Println("=====> Default web formation scaled to 1")
case ct.JobStateDown:
return fmt.Errorf("Failed to scale web process type")
}
return nil
})
if err != nil {
log.Fatalln(err.Error())
}
}
}
func run() error {
client, err := controller.NewClient("", os.Getenv("CONTROLLER_KEY"))
if err != nil {
return fmt.Errorf("Unable to connect to controller: %s", err)
}
usage := `
Usage: flynn-receiver <app> <rev> [-e <var>=<val>]... [-m <key>=<val>]...
Options:
-e,--env <var>=<val>
-m,--meta <key>=<val>
`[1:]
args, _ := docopt.Parse(usage, nil, true, version.String(), false)
appName := args.String["<app>"]
env, err := parsePairs(args, "--env")
if err != nil {
return err
}
meta, err := parsePairs(args, "--meta")
if err != nil {
return err
}
slugBuilder, err := client.GetArtifact(os.Getenv("SLUGBUILDER_IMAGE_ID"))
if err != nil {
return fmt.Errorf("Error getting slugbuilder image: %s", err)
}
slugRunnerID := os.Getenv("SLUGRUNNER_IMAGE_ID")
if _, err := client.GetArtifact(slugRunnerID); err != nil {
return fmt.Errorf("Error getting slugrunner image: %s", err)
}
app, err := client.GetApp(appName)
if err == controller.ErrNotFound {
return fmt.Errorf("Unknown app %q", appName)
} else if err != nil {
return fmt.Errorf("Error retrieving app: %s", err)
}
prevRelease, err := client.GetAppRelease(app.Name)
if err == controller.ErrNotFound {
prevRelease = &ct.Release{}
} else if err != nil {
return fmt.Errorf("Error getting current app release: %s", err)
}
fmt.Printf("-----> Building %s...\n", app.Name)
slugImageID := random.UUID()
jobEnv := map[string]string{
"BUILD_CACHE_URL": fmt.Sprintf("%s/%s-cache.tgz", blobstoreURL, app.ID),
"CONTROLLER_KEY": os.Getenv("CONTROLLER_KEY"),
"SLUG_IMAGE_ID": slugImageID,
}
if buildpackURL, ok := env["BUILDPACK_URL"]; ok {
jobEnv["BUILDPACK_URL"] = buildpackURL
} else if buildpackURL, ok := prevRelease.Env["BUILDPACK_URL"]; ok {
jobEnv["BUILDPACK_URL"] = buildpackURL
}
for _, k := range []string{"SSH_CLIENT_KEY", "SSH_CLIENT_HOSTS"} {
if v := os.Getenv(k); v != "" {
jobEnv[k] = v
}
}
job := &host.Job{
Config: host.ContainerConfig{
Args: []string{"/builder/build.sh"},
Env: jobEnv,
Stdin: true,
DisableLog: true,
},
Partition: "background",
Metadata: map[string]string{
"flynn-controller.app": app.ID,
"flynn-controller.app_name": app.Name,
"flynn-controller.release": prevRelease.ID,
"flynn-controller.type": "slugbuilder",
},
Resources: resource.Defaults(),
}
if sb, ok := prevRelease.Processes["slugbuilder"]; ok {
job.Resources = sb.Resources
} else if rawLimit := os.Getenv("SLUGBUILDER_DEFAULT_MEMORY_LIMIT"); rawLimit != "" {
if limit, err := resource.ParseLimit(resource.TypeMemory, rawLimit); err == nil {
job.Resources[resource.TypeMemory] = resource.Spec{Limit: &limit, Request: &limit}
}
}
cmd := exec.Job(slugBuilder, job)
cmd.Volumes = []*ct.VolumeReq{{Path: "/tmp", DeleteOnStop: true}}
var output bytes.Buffer
cmd.Stdout = io.MultiWriter(os.Stdout, &output)
cmd.Stderr = os.Stderr
releaseEnv := make(map[string]string, len(env))
if prevRelease.Env != nil {
for k, v := range prevRelease.Env {
releaseEnv[k] = v
}
}
for k, v := range env {
releaseEnv[k] = v
}
if len(releaseEnv) > 0 {
stdin, err := cmd.StdinPipe()
if err != nil {
return err
}
go func() {
if err := appendEnvDir(os.Stdin, stdin, releaseEnv); err != nil {
log.Fatalln("ERROR:", err)
}
}()
} else {
cmd.Stdin = os.Stdin
}
shutdown.BeforeExit(func() { cmd.Kill() })
if err := cmd.Run(); err != nil {
return fmt.Errorf("Build failed: %s", err)
}
var types []string
if match := typesPattern.FindSubmatch(output.Bytes()); match != nil {
types = strings.Split(string(match[1]), ", ")
}
fmt.Printf("-----> Creating release...\n")
release := &ct.Release{
ArtifactIDs: []string{slugRunnerID, slugImageID},
Env: releaseEnv,
Meta: prevRelease.Meta,
}
if release.Meta == nil {
release.Meta = make(map[string]string, len(meta))
}
for k, v := range meta {
release.Meta[k] = v
}
procs := make(map[string]ct.ProcessType)
for _, t := range types {
proc := prevRelease.Processes[t]
proc.Args = []string{"/runner/init", "start", t}
if (t == "web" || strings.HasSuffix(t, "-web")) && proc.Service == "" {
proc.Service = app.Name + "-" + t
proc.Ports = []ct.Port{{
Port: 8080,
Proto: "tcp",
Service: &host.Service{
Name: proc.Service,
Create: true,
Check: &host.HealthCheck{Type: "tcp"},
},
}}
}
procs[t] = proc
}
if sb, ok := prevRelease.Processes["slugbuilder"]; ok {
procs["slugbuilder"] = sb
}
release.Processes = procs
if err := client.CreateRelease(release); err != nil {
return fmt.Errorf("Error creating release: %s", err)
}
if err := client.DeployAppRelease(app.Name, release.ID, nil); err != nil {
return fmt.Errorf("Error deploying app release: %s", err)
}
// if the app has a web job and has not been scaled before, create a
// web=1 formation and wait for the "APPNAME-web" service to start
// (whilst also watching job events so the deploy fails if the job
// crashes)
if needsDefaultScale(app.ID, prevRelease.ID, procs, client) {
fmt.Println("=====> Scaling initial release to web=1")
formation := &ct.Formation{
AppID: app.ID,
ReleaseID: release.ID,
Processes: map[string]int{"web": 1},
}
jobEvents := make(chan *ct.Job)
jobStream, err := client.StreamJobEvents(app.ID, jobEvents)
if err != nil {
return fmt.Errorf("Error streaming job events: %s", err)
}
defer jobStream.Close()
serviceEvents := make(chan *discoverd.Event)
serviceStream, err := discoverd.NewService(app.Name + "-web").Watch(serviceEvents)
if err != nil {
return fmt.Errorf("Error streaming service events: %s", err)
}
defer serviceStream.Close()
if err := client.PutFormation(formation); err != nil {
return fmt.Errorf("Error putting formation: %s", err)
}
fmt.Println("-----> Waiting for initial web job to start...")
err = func() error {
for {
select {
case e, ok := <-serviceEvents:
if !ok {
return fmt.Errorf("Service stream closed unexpectedly: %s", serviceStream.Err())
}
if e.Kind == discoverd.EventKindUp && e.Instance.Meta["FLYNN_RELEASE_ID"] == release.ID {
fmt.Println("=====> Initial web job started")
return nil
}
case e, ok := <-jobEvents:
if !ok {
return fmt.Errorf("Job stream closed unexpectedly: %s", jobStream.Err())
}
if e.State == ct.JobStateDown {
return errors.New("Initial web job failed to start")
}
case <-time.After(time.Duration(app.DeployTimeout) * time.Second):
return errors.New("Timed out waiting for initial web job to start")
}
}
}()
if err != nil {
fmt.Println("-----> WARN: scaling initial release down to web=0 due to error")
formation.Processes["web"] = 0
if err := client.PutFormation(formation); err != nil {
// just print this error and return the original error
fmt.Println("-----> WARN: could not scale the initial release down (it may continue to run):", err)
}
return err
}
}
fmt.Println("=====> Application deployed")
return nil
}
