func (s *Server) getPluginConfigItem(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
var err error
styp := p.ByName("type")
if styp == "" {
cdn := s.mc.GetPluginConfigDataNodeAll()
item := &rbody.PluginConfigItem{ConfigDataNode: cdn}
respond(200, item, w)
return
}
typ, err := getPluginType(styp)
if err != nil {
respond(400, rbody.FromError(err), w)
return
}
name := p.ByName("name")
sver := p.ByName("version")
var iver int
if sver != "" {
if iver, err = strconv.Atoi(sver); err != nil {
respond(400, rbody.FromError(err), w)
return
}
} else {
iver = -2
}
cdn := s.mc.GetPluginConfigDataNode(typ, name, iver)
item := &rbody.PluginConfigItem{ConfigDataNode: cdn}
respond(200, item, w)
}
func (s *Server) getMetricsFromTree(w http.ResponseWriter, r *http.Request, params httprouter.Params) {
ns := parseNamespace(params.ByName("namespace"))
var (
ver int
err error
)
q := r.URL.Query()
v := q.Get("ver")
if v == "" {
ver = -1
} else {
ver, err = strconv.Atoi(v)
if err != nil {
respond(400, rbody.FromError(err), w)
return
}
}
if ns[len(ns)-1] == "*" {
mets, err := s.mm.FetchMetrics(ns[:len(ns)-1], ver)
if err != nil {
respond(404, rbody.FromError(err), w)
return
}
respondWithMetrics(r.Host, mets, w)
return
}
mt, err := s.mm.GetMetric(ns, ver)
if err != nil {
respond(404, rbody.FromError(err), w)
return
}
b := &rbody.MetricReturned{}
mb := &rbody.Metric{
Namespace: core.JoinNamespace(mt.Namespace()),
Version: mt.Version(),
LastAdvertisedTimestamp: mt.LastAdvertisedTime().Unix(),
Href: catalogedMetricURI(r.Host, mt),
}
rt := mt.Policy().RulesAsTable()
policies := make([]rbody.PolicyTable, 0, len(rt))
for _, r := range rt {
policies = append(policies, rbody.PolicyTable{
Name: r.Name,
Type: r.Type,
Default: r.Default,
Required: r.Required,
Minimum: r.Minimum,
Maximum: r.Maximum,
})
}
mb.Policy = policies
b.Metric = mb
respond(200, b, w)
}
func (s *Server) removeTask(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
id := p.ByName("id")
err := s.mt.RemoveTask(id)
if err != nil {
if strings.Contains(err.Error(), ErrTaskNotFound.Error()) {
respond(404, rbody.FromError(err), w)
return
}
respond(500, rbody.FromError(err), w)
return
}
respond(200, &rbody.ScheduledTaskRemoved{ID: id}, w)
}
//enableTask changes the task state from Disabled to Stopped
func (s *Server) enableTask(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
id := p.ByName("id")
tsk, err := s.mt.EnableTask(id)
if err != nil {
if strings.Contains(err.Error(), ErrTaskNotFound.Error()) {
respond(404, rbody.FromError(err), w)
return
}
respond(500, rbody.FromError(err), w)
return
}
task := &rbody.ScheduledTaskEnabled{}
task.AddScheduledTask = *rbody.AddSchedulerTaskFromTask(tsk)
respond(200, task, w)
}
func (s *Server) getMetrics(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
mets, err := s.mm.MetricCatalog()
if err != nil {
respond(500, rbody.FromError(err), w)
return
}
respondWithMetrics(r.Host, mets, w)
}
func (s *Server) addAgreement(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
tribeLogger = tribeLogger.WithField("_block", "addAgreement")
b, err := ioutil.ReadAll(r.Body)
if err != nil {
tribeLogger.Error(err)
respond(500, rbody.FromError(err), w)
return
}
a := struct{ Name string }{}
err = json.Unmarshal(b, &a)
if err != nil {
fields := map[string]interface{}{
"error": err,
"hint": `The body of the request should be of the form '{"name": "agreement_name"}'`,
}
se := serror.New(ErrInvalidJSON, fields)
tribeLogger.WithFields(fields).Error(ErrInvalidJSON)
respond(400, rbody.FromSnapError(se), w)
return
}
if a.Name == "" {
fields := map[string]interface{}{
"hint": `The body of the request should be of the form '{"name": "agreement_name"}'`,
}
se := serror.New(ErrInvalidJSON, fields)
tribeLogger.WithFields(fields).Error(ErrInvalidJSON)
respond(400, rbody.FromSnapError(se), w)
return
}
err = s.tr.AddAgreement(a.Name)
if err != nil {
tribeLogger.WithField("agreement-name", a.Name).Error(err)
respond(400, rbody.FromError(err), w)
return
}
res := &rbody.TribeAddAgreement{}
res.Agreements = s.tr.GetAgreements()
respond(200, res, w)
}
func (s *Server) addTask(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
tr, err := marshalTask(r.Body)
if err != nil {
respond(500, rbody.FromError(err), w)
return
}
sch, err := makeSchedule(tr.Schedule)
if err != nil {
respond(500, rbody.FromError(err), w)
return
}
var opts []core.TaskOption
if tr.Deadline != "" {
dl, err := time.ParseDuration(tr.Deadline)
if err != nil {
respond(500, rbody.FromError(err), w)
return
}
opts = append(opts, core.TaskDeadlineDuration(dl))
}
if tr.Name != "" {
opts = append(opts, core.SetTaskName(tr.Name))
}
opts = append(opts, core.OptionStopOnFailure(10))
task, errs := s.mt.CreateTask(sch, tr.Workflow, tr.Start, opts...)
if errs != nil && len(errs.Errors()) != 0 {
var errMsg string
for _, e := range errs.Errors() {
errMsg = errMsg + e.Error() + " -- "
}
respond(500, rbody.FromError(errors.New(errMsg[:len(errMsg)-4])), w)
return
}
taskB := rbody.AddSchedulerTaskFromTask(task)
taskB.Href = taskURI(r.Host, task)
respond(201, taskB, w)
}
func (s *Server) addTask(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
task, err := core.CreateTaskFromContent(r.Body, nil, s.mt.CreateTask)
if err != nil {
respond(500, rbody.FromError(err), w)
return
}
taskB := rbody.AddSchedulerTaskFromTask(task)
taskB.Href = taskURI(r.Host, task)
respond(201, taskB, w)
}
func (s *Server) deletePluginConfigItem(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
var err error
var typ core.PluginType
styp := p.ByName("type")
if styp != "" {
typ, err = getPluginType(styp)
if err != nil {
respond(400, rbody.FromError(err), w)
return
}
}
name := p.ByName("name")
sver := p.ByName("version")
var iver int
if sver != "" {
if iver, err = strconv.Atoi(sver); err != nil {
respond(400, rbody.FromError(err), w)
return
}
} else {
iver = -2
}
src := []string{}
errCode, err := core.UnmarshalBody(&src, r.Body)
if errCode != 0 && err != nil {
respond(400, rbody.FromError(err), w)
return
}
var res cdata.ConfigDataNode
if styp == "" {
res = s.mc.DeletePluginConfigDataNodeFieldAll(src...)
} else {
res = s.mc.DeletePluginConfigDataNodeField(typ, name, iver, src...)
}
item := &rbody.DeletePluginConfigItem{ConfigDataNode: res}
respond(200, item, w)
}
func (s *Server) getMetrics(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
ver := 0 // 0: get all metrics
// If we are provided a parameter with the name 'ns' we need to
// perform a query
q := r.URL.Query()
v := q.Get("ver")
ns_query := q.Get("ns")
if ns_query != "" {
ver = 0 // 0: get all versions
if v != "" {
var err error
ver, err = strconv.Atoi(v)
if err != nil {
respond(400, rbody.FromError(err), w)
return
}
}
// strip the leading char and split on the remaining.
fc := stringutils.GetFirstChar(ns_query)
ns := strings.Split(strings.TrimLeft(ns_query, fc), fc)
if ns[len(ns)-1] == "*" {
ns = ns[:len(ns)-1]
}
mets, err := s.mm.FetchMetrics(core.NewNamespace(ns...), ver)
if err != nil {
respond(404, rbody.FromError(err), w)
return
}
respondWithMetrics(r.Host, mets, w)
return
}
mets, err := s.mm.MetricCatalog()
if err != nil {
respond(500, rbody.FromError(err), w)
return
}
respondWithMetrics(r.Host, mets, w)
}
func (s *Server) getTask(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
id := p.ByName("id")
t, err1 := s.mt.GetTask(id)
if err1 != nil {
respond(404, rbody.FromError(err1), w)
return
}
task := &rbody.ScheduledTaskReturned{}
task.AddScheduledTask = *rbody.AddSchedulerTaskFromTask(t)
task.Href = taskURI(r.Host, t)
respond(200, task, w)
}
func (s *Server) joinAgreement(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
tribeLogger = tribeLogger.WithField("_block", "joinAgreement")
name := p.ByName("name")
if _, ok := s.tr.GetAgreements()[name]; !ok {
fields := map[string]interface{}{
"agreement_name": name,
}
tribeLogger.WithFields(fields).Error(ErrAgreementDoesNotExist)
respond(400, rbody.FromSnapError(serror.New(ErrAgreementDoesNotExist, fields)), w)
return
}
b, err := ioutil.ReadAll(r.Body)
if err != nil {
tribeLogger.Error(err)
respond(500, rbody.FromError(err), w)
return
}
m := struct {
MemberName string `json:"member_name"`
}{}
err = json.Unmarshal(b, &m)
if err != nil {
fields := map[string]interface{}{
"error": err,
"hint": `The body of the request should be of the form '{"member_name": "some_value"}'`,
}
se := serror.New(ErrInvalidJSON, fields)
tribeLogger.WithFields(fields).Error(ErrInvalidJSON)
respond(400, rbody.FromSnapError(se), w)
return
}
serr := s.tr.JoinAgreement(name, m.MemberName)
if serr != nil {
tribeLogger.Error(serr)
respond(400, rbody.FromSnapError(serr), w)
return
}
agreement, _ := s.tr.GetAgreement(name)
respond(200, &rbody.TribeJoinAgreement{Agreement: agreement}, w)
}
func (s *Server) watchTask(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
s.wg.Add(1)
defer s.wg.Done()
logger := log.WithFields(log.Fields{
"_module": "api",
"_block": "watch-task",
"client": r.RemoteAddr,
})
id := p.ByName("id")
logger.WithFields(log.Fields{
"task-id": id,
}).Debug("request to watch task")
tw := &TaskWatchHandler{
alive: true,
mChan: make(chan rbody.StreamedTaskEvent),
}
tc, err1 := s.mt.WatchTask(id, tw)
if err1 != nil {
if strings.Contains(err1.Error(), ErrTaskNotFound.Error()) {
respond(404, rbody.FromError(err1), w)
return
}
respond(500, rbody.FromError(err1), w)
return
}
// Make this Server Sent Events compatible
w.Header().Set("Content-Type", "text/event-stream")
w.Header().Set("Cache-Control", "no-cache")
w.Header().Set("Connection", "keep-alive")
w.Header().Set("Access-Control-Allow-Origin", "*")
// get a flusher type
flusher, ok := w.(http.Flusher)
if !ok {
// This only works on ResponseWriters that support streaming
respond(500, rbody.FromError(ErrStreamingUnsupported), w)
return
}
// send initial stream open event
so := rbody.StreamedTaskEvent{
EventType: rbody.TaskWatchStreamOpen,
Message: "Stream opened",
}
fmt.Fprintf(w, "data: %s\n\n", so.ToJSON())
flusher.Flush()
// Get a channel for if the client notifies us it is closing the connection
n := w.(http.CloseNotifier).CloseNotify()
t := time.Now()
for {
// Write to the ResponseWriter
select {
case e := <-tw.mChan:
logger.WithFields(log.Fields{
"task-id": id,
"task-watcher-event": e.EventType,
}).Debug("new event")
switch e.EventType {
case rbody.TaskWatchMetricEvent, rbody.TaskWatchTaskStarted:
// The client can decide to stop receiving on the stream on Task Stopped.
// We write the event to the buffer
fmt.Fprintf(w, "data: %s\n\n", e.ToJSON())
case rbody.TaskWatchTaskDisabled, rbody.TaskWatchTaskStopped:
// A disabled task should end the streaming and close the connection
fmt.Fprintf(w, "data: %s\n\n", e.ToJSON())
// Flush since we are sending nothing new
flusher.Flush()
// Close out watcher removing it from the scheduler
tc.Close()
// exit since this client is no longer listening
respond(200, &rbody.ScheduledTaskWatchingEnded{}, w)
}
// If we are at least above our minimum buffer time we flush to send
if time.Now().Sub(t).Seconds() > StreamingBufferWindow {
flusher.Flush()
t = time.Now()
}
case <-n:
logger.WithFields(log.Fields{
"task-id": id,
}).Debug("client disconnecting")
// Flush since we are sending nothing new
flusher.Flush()
// Close out watcher removing it from the scheduler
tc.Close()
// exit since this client is no longer listening
respond(200, &rbody.ScheduledTaskWatchingEnded{}, w)
return
case <-s.killChan:
logger.WithFields(log.Fields{
"task-id": id,
}).Debug("snapd exiting; disconnecting client")
// Flush since we are sending nothing new
flusher.Flush()
// Close out watcher removing it from the scheduler
tc.Close()
// exit since this client is no longer listening
respond(200, &rbody.ScheduledTaskWatchingEnded{}, w)
return
}
}
}
func (s *Server) getMetricsFromTree(w http.ResponseWriter, r *http.Request, params httprouter.Params) {
namespace := params.ByName("namespace")
// we land here if the request contains a trailing slash, because it matches the tree
// lookup URL: /v1/metrics/*namespace. If the length of the namespace param is 1, we
// redirect the request to getMetrics. This results in GET /v1/metrics and
// GET /v1/metrics/ behaving the same way.
if len(namespace) <= 1 {
s.getMetrics(w, r, params)
return
}
ns := parseNamespace(namespace)
var (
ver int
err error
)
q := r.URL.Query()
v := q.Get("ver")
if ns[len(ns)-1] == "*" {
if v == "" {
ver = -1
} else {
ver, err = strconv.Atoi(v)
if err != nil {
respond(400, rbody.FromError(err), w)
return
}
}
mets, err := s.mm.FetchMetrics(ns[:len(ns)-1], ver)
if err != nil {
respond(404, rbody.FromError(err), w)
return
}
respondWithMetrics(r.Host, mets, w)
return
}
// If no version was given, get all that fall at this namespace.
if v == "" {
mts, err := s.mm.GetMetricVersions(ns)
if err != nil {
respond(404, rbody.FromError(err), w)
return
}
respondWithMetrics(r.Host, mts, w)
return
}
// if an explicit version is given, get that single one.
ver, err = strconv.Atoi(v)
if err != nil {
respond(400, rbody.FromError(err), w)
return
}
mt, err := s.mm.GetMetric(ns, ver)
if err != nil {
respond(404, rbody.FromError(err), w)
return
}
b := &rbody.MetricReturned{}
mb := &rbody.Metric{
Namespace: core.JoinNamespace(mt.Namespace()),
Version: mt.Version(),
LastAdvertisedTimestamp: mt.LastAdvertisedTime().Unix(),
Href: catalogedMetricURI(r.Host, mt),
}
rt := mt.Policy().RulesAsTable()
policies := make([]rbody.PolicyTable, 0, len(rt))
for _, r := range rt {
policies = append(policies, rbody.PolicyTable{
Name: r.Name,
Type: r.Type,
Default: r.Default,
Required: r.Required,
Minimum: r.Minimum,
Maximum: r.Maximum,
})
}
mb.Policy = policies
b.Metric = mb
respond(200, b, w)
}
func (s *Server) loadPlugin(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
mediaType, params, err := mime.ParseMediaType(r.Header.Get("Content-Type"))
if err != nil {
respond(500, rbody.FromError(err), w)
return
}
if strings.HasPrefix(mediaType, "multipart/") {
var pluginPath string
var signature []byte
var checkSum [sha256.Size]byte
lp := &rbody.PluginsLoaded{}
lp.LoadedPlugins = make([]rbody.LoadedPlugin, 0)
mr := multipart.NewReader(r.Body, params["boundary"])
var i int
for {
var b []byte
p, err := mr.NextPart()
if err == io.EOF {
break
}
if err != nil {
respond(500, rbody.FromError(err), w)
return
}
if r.Header.Get("Plugin-Compression") == "gzip" {
g, err := gzip.NewReader(p)
defer g.Close()
if err != nil {
respond(500, rbody.FromError(err), w)
return
}
b, err = ioutil.ReadAll(g)
if err != nil {
respond(500, rbody.FromError(err), w)
return
}
} else {
b, err = ioutil.ReadAll(p)
if err != nil {
respond(500, rbody.FromError(err), w)
return
}
}
// A little sanity checking for files being passed into the API server.
// First file passed in should be the plugin. If the first file is a signature
// file, an error is returned. The signature file should be the second
// file passed to the API server. If the second file does not have the ".asc"
// extension, an error is returned.
// If we loop around more than twice before receiving io.EOF, then
// an error is returned.
switch {
case i == 0:
if filepath.Ext(p.FileName()) == ".asc" {
e := errors.New("Error: first file passed to load plugin api can not be signature file")
respond(500, rbody.FromError(e), w)
return
}
if pluginPath, err = writeFile(p.FileName(), b); err != nil {
respond(500, rbody.FromError(err), w)
return
}
checkSum = sha256.Sum256(b)
case i == 1:
if filepath.Ext(p.FileName()) == ".asc" {
signature = b
} else {
e := errors.New("Error: second file passed was not a signature file")
respond(500, rbody.FromError(e), w)
return
}
case i == 2:
e := errors.New("Error: More than two files passed to the load plugin api")
respond(500, rbody.FromError(e), w)
return
}
i++
}
rp, err := core.NewRequestedPlugin(pluginPath)
if err != nil {
respond(500, rbody.FromError(err), w)
return
}
// Sanity check, verify the checkSum on the file sent is the same
// as after it is written to disk.
if rp.CheckSum() != checkSum {
e := errors.New("Error: CheckSum mismatch on requested plugin to load")
respond(500, rbody.FromError(e), w)
return
}
rp.SetSignature(signature)
restLogger.Info("Loading plugin: ", rp.Path())
pl, err := s.mm.Load(rp)
if err != nil {
var ec int
restLogger.Error(err)
restLogger.Debugf("Removing file (%s)", rp.Path())
err2 := os.RemoveAll(filepath.Dir(rp.Path()))
if err2 != nil {
restLogger.Error(err2)
}
rb := rbody.FromError(err)
switch rb.ResponseBodyMessage() {
case PluginAlreadyLoaded:
ec = 409
default:
ec = 500
}
respond(ec, rb, w)
return
}
lp.LoadedPlugins = append(lp.LoadedPlugins, *catalogedPluginToLoaded(r.Host, pl))
respond(201, lp, w)
}
}
