func (p *dockerProvisioner) Destroy(app provision.App) error {
containers, _ := listAppContainers(app.GetName())
go func(c []container) {
var containersGroup sync.WaitGroup
containersGroup.Add(len(containers))
for _, c := range containers {
go func(c container) {
defer containersGroup.Done()
err := removeContainer(&c)
if err != nil {
log.Error(err.Error())
}
}(c)
}
containersGroup.Wait()
err := removeImage(assembleImageName(app.GetName()))
if err != nil {
log.Error(err.Error())
}
}(containers)
r, err := getRouter()
if err != nil {
log.Errorf("Failed to get router: %s", err)
return err
}
return r.RemoveBackend(app.GetName())
}
// handle is the function called by the queue handler on each message.
func handle(msg *queue.Message) {
switch msg.Action {
case RegenerateApprcAndStart:
fallthrough
case regenerateApprc:
if len(msg.Args) < 1 {
log.Errorf("Error handling %q: this action requires at least 1 argument.", msg.Action)
msg.Delete()
return
}
app, err := ensureAppIsStarted(msg)
if err != nil {
log.Error(err.Error())
return
}
msg.Delete()
app.SerializeEnvVars()
fallthrough
case startApp:
if msg.Action == regenerateApprc {
break
}
if len(msg.Args) < 1 {
log.Errorf("Error handling %q: this action requires at least 1 argument.", msg.Action)
}
app, err := ensureAppIsStarted(msg)
if err != nil {
log.Error(err.Error())
return
}
err = app.Restart(ioutil.Discard)
if err != nil {
log.Errorf("Error handling %q. App failed to start:\n%s.", msg.Action, err)
return
}
msg.Delete()
case BindService:
err := bindUnit(msg)
if err != nil {
log.Error(err.Error())
return
}
msg.Delete()
default:
log.Errorf("Error handling %q: invalid action.", msg.Action)
msg.Delete()
}
}
// RemoveUnit removes a unit by its InstanceId or Name.
//
// Will search first by InstanceId, if no instance is found, then tries to
// search using the unit name, then calls the removal function from provisioner
//
// Returns an error in case of failure.
func (app *App) RemoveUnit(id string) error {
var (
unit Unit
i int
u Unit
)
for i, u = range app.Units {
if u.InstanceId == id || u.Name == id {
unit = u
break
}
}
if unit.GetName() == "" {
return stderr.New("Unit not found.")
}
if err := Provisioner.RemoveUnit(app, unit.GetName()); err != nil {
log.Error(err.Error())
}
app.removeUnits([]int{i})
app.unbindUnit(&unit)
conn, err := db.Conn()
if err != nil {
return err
}
defer conn.Close()
return conn.Apps().Update(
bson.M{"name": app.Name},
bson.M{"$set": bson.M{"units": app.Units}},
)
}
func (fn AdminRequiredHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
setVersionHeaders(w)
defer func() {
if r.Body != nil {
r.Body.Close()
}
}()
fw := io.FlushingWriter{ResponseWriter: w}
header := r.Header.Get("Authorization")
if header == "" {
http.Error(&fw, "You must provide the Authorization header", http.StatusUnauthorized)
} else if t, err := auth.GetToken(header); err != nil {
http.Error(&fw, "Invalid token", http.StatusUnauthorized)
} else if user, err := t.User(); err != nil || !user.IsAdmin() {
http.Error(&fw, "Forbidden", http.StatusForbidden)
} else if err = fn(&fw, r, t); err != nil {
code := http.StatusInternalServerError
if e, ok := err.(*errors.HTTP); ok {
code = e.Code
}
if fw.Wrote() {
fmt.Fprintln(&fw, err)
} else {
http.Error(&fw, err.Error(), code)
}
log.Error(err.Error())
}
}
func (c *Client) Bind(instance *ServiceInstance, app bind.App, unit bind.Unit) (map[string]string, error) {
log.Debugf("Calling bind of instance %q and unit %q at %q API",
instance.Name, unit.GetIp(), instance.ServiceName)
var resp *http.Response
params := map[string][]string{
"unit-host": {unit.GetIp()},
"app-host": {app.GetIp()},
}
resp, err := c.issueRequest("/resources/"+instance.Name, "POST", params)
if err != nil {
if m, _ := regexp.MatchString("", err.Error()); m {
return nil, fmt.Errorf("%s api is down.", instance.Name)
}
return nil, err
}
if err == nil && resp.StatusCode < 300 {
var result map[string]string
err = c.jsonFromResponse(resp, &result)
if err != nil {
return nil, err
}
return result, nil
}
if resp.StatusCode == http.StatusPreconditionFailed {
return nil, &errors.HTTP{Code: resp.StatusCode, Message: "You cannot bind any app to this service instance because it is not ready yet."}
}
msg := "Failed to bind instance " + instance.Name + " to the unit " + unit.GetIp() + ": " + c.buildErrorMessage(err, resp)
log.Error(msg)
return nil, &errors.HTTP{Code: http.StatusInternalServerError, Message: msg}
}
// ServerURL returns the URL to Gandalf API.
func ServerURL() string {
server, err := config.GetString("git:api-server")
if err != nil {
log.Error("git:api-server config not found")
panic(err)
}
return server
}
func getELBEndpoint() *elb.ELB {
access, err := config.GetString("aws:access-key-id")
if err != nil {
log.Error(err.Error())
}
secret, err := config.GetString("aws:secret-access-key")
if err != nil {
log.Error(err.Error())
}
endpoint, err := config.GetString("juju:elb-endpoint")
if err != nil {
log.Error(err.Error())
}
auth := aws.Auth{AccessKey: access, SecretKey: secret}
region := aws.Region{ELBEndpoint: endpoint}
return elb.New(auth, region)
}
// ReadWriteURL returns the SSH URL, for writing and reading operations.
func ReadWriteURL(app string) string {
publicHost, err := config.GetString("git:rw-host")
if err != nil {
log.Error("git:rw-host config not found")
panic(err)
}
return fmt.Sprintf("git@%s:%s.git", publicHost, app)
}
// ReadOnlyURL returns the url for communication with git-daemon.
func ReadOnlyURL(app string) string {
roHost, err := config.GetString("git:ro-host")
if err != nil {
log.Error("git:ro-host config not found")
panic(err)
}
return fmt.Sprintf("git://%s/%s.git", roHost, app)
}
func (c *Client) Destroy(instance *ServiceInstance) error {
log.Debug("Attempting to call destroy of service instance " + instance.Name + " at " + instance.ServiceName + " api")
resp, err := c.issueRequest("/resources/"+instance.Name, "DELETE", nil)
if err == nil && resp.StatusCode > 299 {
msg := "Failed to destroy the instance " + instance.Name + ": " + c.buildErrorMessage(err, resp)
log.Error(msg)
return &errors.HTTP{Code: http.StatusInternalServerError, Message: msg}
}
return err
}
// getPrivateDns returns the private dns for an instance.
func (h *instanceAgentsConfigHealer) getPrivateDns(instanceId string) (string, error) {
log.Debugf("getting dns for %s", instanceId)
resp, err := h.ec2().Instances([]string{instanceId}, nil)
if err != nil {
log.Errorf("error in gettings dns for %s", instanceId)
log.Error(err.Error())
return "", err
}
dns := resp.Reservations[0].Instances[0].PrivateDNSName
return dns, nil
}
func (c *Client) Unbind(instance *ServiceInstance, unit bind.Unit) error {
log.Debug("Attempting to call unbind of service instance " + instance.Name + " and unit " + unit.GetIp() + " at " + instance.ServiceName + " api")
var resp *http.Response
url := "/resources/" + instance.Name + "/hostname/" + unit.GetIp()
resp, err := c.issueRequest(url, "DELETE", nil)
if err == nil && resp.StatusCode > 299 {
msg := fmt.Sprintf("Failed to unbind (%q): %s", url, c.buildErrorMessage(err, resp))
log.Error(msg)
return &errors.HTTP{Code: http.StatusInternalServerError, Message: msg}
}
return err
}
func (c *Client) Create(instance *ServiceInstance) error {
var err error
log.Debug("Attempting to call creation of service instance " + instance.Name + " at " + instance.ServiceName + " api")
var resp *http.Response
params := map[string][]string{
"name": {instance.Name},
}
if resp, err = c.issueRequest("/resources", "POST", params); err == nil && resp.StatusCode < 300 {
return nil
}
msg := "Failed to create the instance " + instance.Name + ": " + c.buildErrorMessage(err, resp)
log.Error(msg)
return &errors.HTTP{Code: http.StatusInternalServerError, Message: msg}
}
func (fn Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
setVersionHeaders(w)
defer func() {
if r.Body != nil {
r.Body.Close()
}
}()
fw := io.FlushingWriter{ResponseWriter: w}
if err := fn(&fw, r); err != nil {
if fw.Wrote() {
fmt.Fprintln(&fw, err)
} else {
http.Error(&fw, err.Error(), http.StatusInternalServerError)
}
log.Error(err.Error())
}
}
// getImage returns the image name or id from an app.
func getImage(app provision.App) string {
var c container
coll := collection()
defer coll.Close()
coll.Find(bson.M{"appname": app.GetName()}).One(&c)
if c.Image == "" {
return assembleImageName(app.GetPlatform())
}
if usePlatformImage(app) {
err := removeImage(c.Image)
if err != nil {
log.Error(err.Error())
}
return assembleImageName(app.GetPlatform())
}
return c.Image
}
// BindApp makes the bind between the service instance and an app.
func (si *ServiceInstance) BindApp(app bind.App) error {
err := si.AddApp(app.GetName())
if err != nil {
return &errors.HTTP{Code: http.StatusConflict, Message: "This app is already bound to this service instance."}
}
err = si.update()
if err != nil {
return err
}
if len(app.GetUnits()) == 0 {
return &errors.HTTP{Code: http.StatusPreconditionFailed, Message: "This app does not have an IP yet."}
}
envsChan := make(chan map[string]string, len(app.GetUnits())+1)
errChan := make(chan error, len(app.GetUnits())+1)
for _, unit := range app.GetUnits() {
go func(unit bind.Unit) {
vars, err := si.BindUnit(app, unit)
if err != nil {
errChan <- err
return
}
envsChan <- vars
}(unit)
}
var envVars []bind.EnvVar
select {
case envs := <-envsChan:
envVars = make([]bind.EnvVar, 0, len(envs))
for k, v := range envs {
envVars = append(envVars, bind.EnvVar{
Name: k,
Value: v,
Public: false,
InstanceName: si.Name,
})
}
return app.SetEnvs(envVars, false)
case err = <-errChan:
log.Error(err.Error())
}
return err
}
// Connects into service's api
// The api should be prepared to receive the request,
// like below:
// GET /resources/<name>/status/
// The service host here is the private ip of the service instance
// 204 means the service is up, 500 means the service is down
func (c *Client) Status(instance *ServiceInstance) (string, error) {
log.Debug("Attempting to call status of service instance " + instance.Name + " at " + instance.ServiceName + " api")
var (
resp *http.Response
err error
)
url := "/resources/" + instance.Name + "/status"
if resp, err = c.issueRequest(url, "GET", nil); err == nil {
switch resp.StatusCode {
case 202:
return "pending", nil
case 204:
return "up", nil
case 500:
return "down", nil
}
}
msg := "Failed to get status of instance " + instance.Name + ": " + c.buildErrorMessage(err, resp)
log.Error(msg)
err = &errors.HTTP{Code: http.StatusInternalServerError, Message: msg}
return "", err
}
func (fn authorizationRequiredHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
setVersionHeaders(w)
defer func() {
if r.Body != nil {
r.Body.Close()
}
}()
fw := io.FlushingWriter{ResponseWriter: w}
token := r.Header.Get("Authorization")
if t, err := validate(token, r); err != nil {
http.Error(&fw, err.Error(), http.StatusUnauthorized)
} else if err = fn(&fw, r, t); err != nil {
code := http.StatusInternalServerError
if e, ok := err.(*errors.HTTP); ok {
code = e.Code
}
if fw.Wrote() {
fmt.Fprintln(&fw, err)
} else {
http.Error(&fw, err.Error(), code)
}
log.Error(err.Error())
}
}
a, ok := ctx.Params[0].(bind.App)
if !ok {
return nil, stderrors.New("First parameter must be a bind.App.")
}
if err := si.AddApp(a.GetName()); err != nil {
return nil, &errors.HTTP{Code: http.StatusConflict, Message: "This app is already bound to this service instance."}
}
if err := si.update(); err != nil {
return nil, err
}
return nil, nil
},
Backward: func(ctx action.BWContext) {
si, ok := ctx.Params[1].(ServiceInstance)
if !ok {
log.Error("Second parameter must be a ServiceInstance.")
}
a, ok := ctx.Params[0].(bind.App)
if !ok {
log.Error("First parameter must be a bind.App.")
}
si.RemoveApp(a.GetName())
if err := si.update(); err != nil {
log.Errorf("Could not remove app from service instance: %s", err.Error())
}
},
MinParams: 2,
}
var setEnvironVariablesToApp = action.Action{
Name: "set-environ-variables-to-app",