func (s *Service) handleTest(w http.ResponseWriter, r *http.Request) {
name := s.nameFromPath(r.URL.Path)
if name == "" {
httpd.HttpError(w, "must provide service name", true, http.StatusBadRequest)
return
}
test, ok := s.testers[name]
if !ok {
httpd.HttpError(w, fmt.Sprintf("service %q not found", name), true, http.StatusNotFound)
return
}
options := test.TestOptions()
if options != nil {
if err := json.NewDecoder(r.Body).Decode(options); err != nil {
httpd.HttpError(w, fmt.Sprint("failed to decode JSON body:", err), true, http.StatusBadRequest)
return
}
}
result := ServiceTestResult{}
err := test.Test(options)
if err != nil {
result.Message = err.Error()
} else {
result.Success = true
}
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(result)
}
func (ts *Service) handleTemplate(w http.ResponseWriter, r *http.Request) {
id, err := ts.templateIDFromPath(r.URL.Path)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
raw, err := ts.templates.Get(id)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusNotFound)
return
}
scriptFormat := r.URL.Query().Get("script-format")
switch scriptFormat {
case "":
scriptFormat = "formatted"
case "formatted", "raw":
default:
httpd.HttpError(w, fmt.Sprintf("invalid script-format parameter %q", scriptFormat), true, http.StatusBadRequest)
return
}
t, err := ts.convertTemplate(raw, scriptFormat)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusOK)
w.Write(httpd.MarshalJSON(t, true))
}
func (s *Service) handleDeleteRecording(w http.ResponseWriter, r *http.Request) {
rid, err := s.recordingIDFromPath(r.URL.Path)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
recording, err := s.recordings.Get(rid)
if err == ErrNoRecordingExists {
w.WriteHeader(http.StatusNoContent)
return
}
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
err = s.recordings.Delete(rid)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
ds, err := parseDataSourceURL(recording.DataURL)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
err = ds.Remove()
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusNoContent)
}
func (s *Service) handleRecordBatch(w http.ResponseWriter, req *http.Request) {
var opt kclient.RecordBatchOptions
dec := json.NewDecoder(req.Body)
err := dec.Decode(&opt)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
if opt.ID == "" {
opt.ID = uuid.NewV4().String()
}
if !validID.MatchString(opt.ID) {
httpd.HttpError(w, fmt.Sprintf("recording ID must contain only letters, numbers, '-', '.' and '_'. %q", opt.ID), true, http.StatusBadRequest)
return
}
if opt.Start.IsZero() {
httpd.HttpError(w, "must provide start time", true, http.StatusBadRequest)
return
}
if opt.Stop.IsZero() {
opt.Stop = time.Now()
}
t, err := s.TaskStore.Load(opt.Task)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusNotFound)
return
}
dataUrl := s.dataURLFromID(opt.ID, batchEXT)
recording := Recording{
ID: opt.ID,
DataURL: dataUrl.String(),
Type: BatchRecording,
Date: time.Now(),
Status: Running,
}
err = s.recordings.Create(recording)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
go func(recording Recording) {
ds, _ := parseDataSourceURL(dataUrl.String())
err := s.doRecordBatch(ds, t, opt.Start, opt.Stop)
s.updateRecordingResult(recording, ds, err)
}(recording)
w.WriteHeader(http.StatusCreated)
w.Write(httpd.MarshalJSON(convertRecording(recording), true))
}
func (s *Service) handleRecordQuery(w http.ResponseWriter, req *http.Request) {
var opt kclient.RecordQueryOptions
dec := json.NewDecoder(req.Body)
err := dec.Decode(&opt)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
if opt.ID == "" {
opt.ID = uuid.NewV4().String()
}
if !validID.MatchString(opt.ID) {
httpd.HttpError(w, fmt.Sprintf("recording ID must contain only letters, numbers, '-', '.' and '_'. %q", opt.ID), true, http.StatusBadRequest)
return
}
if opt.Query == "" {
httpd.HttpError(w, "must provide query", true, http.StatusBadRequest)
return
}
var dataUrl url.URL
var typ RecordingType
switch opt.Type {
case kclient.StreamTask:
dataUrl = s.dataURLFromID(opt.ID, streamEXT)
typ = StreamRecording
case kclient.BatchTask:
dataUrl = s.dataURLFromID(opt.ID, batchEXT)
typ = BatchRecording
}
recording := Recording{
ID: opt.ID,
DataURL: dataUrl.String(),
Type: typ,
Date: time.Now(),
Status: Running,
}
err = s.recordings.Create(recording)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
go func(recording Recording) {
ds, _ := parseDataSourceURL(dataUrl.String())
err := s.doRecordQuery(ds, opt.Query, typ, opt.Cluster)
s.updateRecordingResult(recording, ds, err)
}(recording)
w.WriteHeader(http.StatusCreated)
w.Write(httpd.MarshalJSON(convertRecording(recording), true))
}
func (ts *Service) handleDeleteTemplate(w http.ResponseWriter, r *http.Request) {
id, err := ts.templateIDFromPath(r.URL.Path)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
err = ts.templates.Delete(id)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusNoContent)
}
func (ts *Service) handleTask(w http.ResponseWriter, r *http.Request) {
name := r.URL.Query().Get("name")
if name == "" {
httpd.HttpError(w, "must pass task name", true, http.StatusBadRequest)
return
}
labels := false
labelsStr := r.URL.Query().Get("labels")
if labelsStr != "" {
var err error
labels, err = strconv.ParseBool(labelsStr)
if err != nil {
httpd.HttpError(w, "invalid labels value:", true, http.StatusBadRequest)
return
}
}
raw, err := ts.LoadRaw(name)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusNotFound)
return
}
executing := ts.TaskMaster.IsExecuting(name)
errMsg := raw.Error
dot := ""
task, err := ts.Load(name)
if err == nil {
if executing {
dot = ts.TaskMaster.ExecutingDot(name, labels)
} else {
dot = string(task.Dot())
}
} else {
errMsg = err.Error()
}
info := TaskInfo{
Name: name,
Type: raw.Type,
DBRPs: raw.DBRPs,
TICKscript: raw.TICKscript,
Dot: dot,
Enabled: ts.IsEnabled(name),
Executing: executing,
Error: errMsg,
}
w.Write(httpd.MarshalJSON(info, true))
}
func (s *Service) handleGetConfig(w http.ResponseWriter, r *http.Request) {
if !s.enabled {
httpd.HttpError(w, "config override service is not enabled", true, http.StatusForbidden)
return
}
section, element, hasSection, hasElement := sectionAndElementFromPath(r.URL.Path, configBasePath)
config, err := s.getConfig(section)
if err != nil {
httpd.HttpError(w, fmt.Sprint("failed to resolve current config:", err), true, http.StatusInternalServerError)
return
}
if hasSection && section == "" {
httpd.HttpError(w, "section not specified, do you have an extra trailing '/'?", true, http.StatusBadRequest)
return
}
if !hasSection {
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(config)
} else if section != "" {
sec, ok := config.Sections[section]
if !ok {
httpd.HttpError(w, fmt.Sprint("unknown section: ", section), true, http.StatusNotFound)
return
}
if hasElement {
var elementEntry client.ConfigElement
// Find specified element
elementKey := s.elementKeys[section]
found := false
for _, e := range sec.Elements {
if (element == "" && elementKey == "") || e.Options[elementKey] == element {
elementEntry = e
found = true
break
}
}
if found {
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(elementEntry)
} else {
httpd.HttpError(w, fmt.Sprintf("unknown section/element: %s/%s", section, element), true, http.StatusNotFound)
return
}
} else {
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(sec)
}
}
}
func (s *Service) handleListTests(w http.ResponseWriter, r *http.Request) {
tests := ServiceTests{
Link: serviceTestsLink,
}
pattern := r.URL.Query().Get("pattern")
if pattern == "" {
pattern = "*"
}
for name, test := range s.testers {
if ok, err := filepath.Match(pattern, name); err != nil {
httpd.HttpError(w, fmt.Sprintf("bad pattern: %v", err), true, http.StatusBadRequest)
return
} else if ok {
options := test.TestOptions()
tests.Services = append(tests.Services, ServiceTest{
Link: s.serviceTestLink(name),
Name: name,
Options: options,
})
}
}
sort.Sort(tests.Services)
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(tests)
}
// Refresh the subscriptions linking for all clusters.
func (s *Service) handleSubscriptions(w http.ResponseWriter, r *http.Request) {
err := s.LinkSubscriptions()
if err != nil {
httpd.HttpError(w, fmt.Sprintf("failed to link subscriptions: %s", err.Error()), true, http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusNoContent)
}
func (ts *Service) handleDisable(w http.ResponseWriter, r *http.Request) {
name := r.URL.Query().Get("name")
err := ts.Disable(name)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
}
func (s *Service) handleRecordStream(w http.ResponseWriter, r *http.Request) {
var opt kclient.RecordStreamOptions
dec := json.NewDecoder(r.Body)
err := dec.Decode(&opt)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
if opt.ID == "" {
opt.ID = uuid.NewV4().String()
}
if !validID.MatchString(opt.ID) {
httpd.HttpError(w, fmt.Sprintf("recording ID must contain only letters, numbers, '-', '.' and '_'. %q", opt.ID), true, http.StatusBadRequest)
return
}
t, err := s.TaskStore.Load(opt.Task)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusNotFound)
return
}
dataUrl := s.dataURLFromID(opt.ID, streamEXT)
recording := Recording{
ID: opt.ID,
DataURL: dataUrl.String(),
Type: StreamRecording,
Date: time.Now(),
Status: Running,
}
err = s.recordings.Create(recording)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
// Spawn routine to perform actual recording.
go func(recording Recording) {
ds, _ := parseDataSourceURL(dataUrl.String())
err := s.doRecordStream(opt.ID, ds, opt.Stop, t.DBRPs, t.Measurements())
s.updateRecordingResult(recording, ds, err)
}(recording)
w.WriteHeader(http.StatusCreated)
w.Write(httpd.MarshalJSON(convertRecording(recording), true))
}
func (h *HTTPOutNode) runOut([]byte) error {
hndl := func(w http.ResponseWriter, req *http.Request) {
h.mu.RLock()
defer h.mu.RUnlock()
if b, err := json.Marshal(h.result); err != nil {
httpd.HttpError(
w,
err.Error(),
true,
http.StatusInternalServerError,
)
} else {
w.Write(b)
}
}
p := path.Join("/task", h.et.Task.Name, h.c.Endpoint)
r := []httpd.Route{{
Name: h.Name(),
Method: "GET",
Pattern: p,
HandlerFunc: hndl,
}}
h.endpoint = h.et.tm.HTTPDService.URL() + p
func() {
h.mu.Lock()
defer h.mu.Unlock()
h.routes = r
}()
err := h.et.tm.HTTPDService.AddRoutes(r)
if err != nil {
return err
}
switch h.Wants() {
case pipeline.StreamEdge:
for p, ok := h.ins[0].NextPoint(); ok; p, ok = h.ins[0].NextPoint() {
h.timer.Start()
row := models.PointToRow(p)
h.updateResultWithRow(p.Group, row)
h.timer.Stop()
}
case pipeline.BatchEdge:
for b, ok := h.ins[0].NextBatch(); ok; b, ok = h.ins[0].NextBatch() {
h.timer.Start()
row := models.BatchToRow(b)
h.updateResultWithRow(b.Group, row)
h.timer.Stop()
}
}
return nil
}
func (s *Service) handleReplay(w http.ResponseWriter, req *http.Request) {
id, err := s.replayIDFromPath(req.URL.Path)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
replay, err := s.replays.Get(id)
if err != nil {
httpd.HttpError(w, "could not find replay: "+err.Error(), true, http.StatusNotFound)
return
}
if replay.Status == Running {
w.WriteHeader(http.StatusAccepted)
} else {
w.WriteHeader(http.StatusOK)
}
w.Write(httpd.MarshalJSON(convertReplay(replay), true))
}
func (s *Service) handleDeleteReplay(w http.ResponseWriter, req *http.Request) {
id, err := s.replayIDFromPath(req.URL.Path)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
//TODO: Cancel running replays
s.replays.Delete(id)
w.WriteHeader(http.StatusNoContent)
}
func (s *Service) handleRecording(w http.ResponseWriter, r *http.Request) {
rid, err := s.recordingIDFromPath(r.URL.Path)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
recording, err := s.recordings.Get(rid)
if err != nil {
httpd.HttpError(w, "error finding recording: "+err.Error(), true, http.StatusInternalServerError)
return
}
if recording.Status == Running {
w.WriteHeader(http.StatusAccepted)
} else {
w.WriteHeader(http.StatusOK)
}
w.Write(httpd.MarshalJSON(convertRecording(recording), true))
}
func (ts *Service) handleTask(w http.ResponseWriter, r *http.Request) {
id, err := ts.taskIDFromPath(r.URL.Path)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
raw, err := ts.tasks.Get(id)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusNotFound)
return
}
scriptFormat := r.URL.Query().Get("script-format")
switch scriptFormat {
case "", "formatted":
scriptFormat = "formatted"
case "raw":
default:
httpd.HttpError(w, fmt.Sprintf("invalid script-format parameter %q", scriptFormat), true, http.StatusBadRequest)
return
}
dotView := r.URL.Query().Get("dot-view")
switch dotView {
case "":
dotView = "attributes"
case "attributes":
case "labels":
default:
httpd.HttpError(w, fmt.Sprintf("invalid dot-view parameter %q", dotView), true, http.StatusBadRequest)
return
}
tmID := r.URL.Query().Get("replay-id")
if tmID == "" {
tmID = kapacitor.MainTaskMaster
}
tm := ts.TaskMasterLookup.Get(tmID)
if tm == nil {
httpd.HttpError(w, fmt.Sprintf("no running replay with ID: %s", tmID), true, http.StatusBadRequest)
return
}
if tmID != kapacitor.MainTaskMaster && !tm.IsExecuting(raw.ID) {
httpd.HttpError(w, fmt.Sprintf("replay %s is not for task: %s", tmID, raw.ID), true, http.StatusBadRequest)
return
}
t, err := ts.convertTask(raw, scriptFormat, dotView, tm)
if err != nil {
httpd.HttpError(w, fmt.Sprintf("invalid task stored in db: %s", err.Error()), true, http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusOK)
w.Write(httpd.MarshalJSON(t, true))
}
func (s *Service) handleTestOptions(w http.ResponseWriter, r *http.Request) {
name := s.nameFromPath(r.URL.Path)
if name == "" {
httpd.HttpError(w, "must provide service name", true, http.StatusBadRequest)
return
}
test, ok := s.testers[name]
if !ok {
httpd.HttpError(w, fmt.Sprintf("service %q not found", name), true, http.StatusNotFound)
return
}
options := test.TestOptions()
serviceTest := ServiceTest{
Link: s.serviceTestLink(name),
Name: name,
Options: options,
}
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(serviceTest)
}
func (r *Service) handleGetRecording(w http.ResponseWriter, req *http.Request) {
rid := req.URL.Query().Get("id")
// First check if its still running
var errC <-chan error
var running bool
func() {
r.recordingsMu.RLock()
defer r.recordingsMu.RUnlock()
errC, running = r.runningRecordings[rid]
}()
if running {
// It is still running wait for it to finish
err := <-errC
if err != nil {
info := RecordingInfo{
ID: rid,
Error: err.Error(),
}
w.Write(httpd.MarshalJSON(info, true))
return
}
}
// It already finished, return its info
info, err := r.GetRecordings([]string{rid})
if err != nil {
httpd.HttpError(w, "error finding recording: "+err.Error(), true, http.StatusInternalServerError)
return
}
if len(info) != 1 {
httpd.HttpError(w, "recording not found", true, http.StatusNotFound)
return
}
w.Write(httpd.MarshalJSON(info[0], true))
}
func (ts *Service) handleTasks(w http.ResponseWriter, r *http.Request) {
tasksStr := r.URL.Query().Get("tasks")
var tasks []string
if tasksStr != "" {
tasks = strings.Split(tasksStr, ",")
}
infos, err := ts.GetTaskInfo(tasks)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusNotFound)
return
}
type response struct {
Tasks []taskInfo `json:"Tasks"`
}
w.Write(httpd.MarshalJSON(response{infos}, true))
}
func (s *Service) handleList(w http.ResponseWriter, req *http.Request) {
ridsStr := req.URL.Query().Get("rids")
var rids []string
if ridsStr != "" {
rids = strings.Split(ridsStr, ",")
}
infos, err := s.GetRecordings(rids)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusNotFound)
return
}
type response struct {
Recordings []RecordingInfo `json:"Recordings"`
}
w.Write(httpd.MarshalJSON(response{infos}, true))
}
func (ts *Service) handleListTemplates(w http.ResponseWriter, r *http.Request) {
pattern := r.URL.Query().Get("pattern")
fields := r.URL.Query()["fields"]
if len(fields) == 0 {
fields = allTemplateFields
} else {
// Always return ID field
fields = append(fields, "id", "link")
}
scriptFormat := r.URL.Query().Get("script-format")
switch scriptFormat {
case "":
scriptFormat = "formatted"
case "formatted":
case "raw":
default:
httpd.HttpError(w, fmt.Sprintf("invalid script-format parameter %q", scriptFormat), true, http.StatusBadRequest)
return
}
var err error
offset := int64(0)
offsetStr := r.URL.Query().Get("offset")
if offsetStr != "" {
offset, err = strconv.ParseInt(offsetStr, 10, 64)
if err != nil {
httpd.HttpError(w, fmt.Sprintf("invalid offset parameter %q must be an integer: %s", offsetStr, err), true, http.StatusBadRequest)
}
}
limit := int64(100)
limitStr := r.URL.Query().Get("limit")
if limitStr != "" {
limit, err = strconv.ParseInt(limitStr, 10, 64)
if err != nil {
httpd.HttpError(w, fmt.Sprintf("invalid limit parameter %q must be an integer: %s", limitStr, err), true, http.StatusBadRequest)
}
}
rawTemplates, err := ts.templates.List(pattern, int(offset), int(limit))
templates := make([]map[string]interface{}, len(rawTemplates))
for i, template := range rawTemplates {
templates[i] = make(map[string]interface{}, len(fields))
task, err := ts.templateTask(template)
if err != nil {
continue
}
for _, field := range fields {
var value interface{}
switch field {
case "id":
value = template.ID
case "link":
value = ts.templateLink(template.ID)
case "type":
switch template.Type {
case StreamTask:
value = client.StreamTask
case BatchTask:
value = client.BatchTask
}
case "script":
value = template.TICKscript
if scriptFormat == "formatted" {
formatted, err := tick.Format(template.TICKscript)
if err == nil {
// Only format if it succeeded.
// Otherwise a change in syntax may prevent template retrieval.
value = formatted
}
}
case "dot":
value = string(task.Dot())
case "vars":
vars, err := ts.convertToClientVarsFromTick(task.Vars())
if err != nil {
ts.logger.Printf("E! failed to get vars for template %s: %s", template.ID, err)
break
}
value = vars
case "error":
value = template.Error
case "created":
value = template.Created
case "modified":
value = template.Modified
default:
httpd.HttpError(w, fmt.Sprintf("unsupported field %q", field), true, http.StatusBadRequest)
return
}
templates[i][field] = value
}
}
type response struct {
Templates []map[string]interface{} `json:"templates"`
}
w.Write(httpd.MarshalJSON(response{templates}, true))
}
func (ts *Service) handleSave(w http.ResponseWriter, r *http.Request) {
name := r.URL.Query().Get("name")
newTask := &rawTask{
Name: name,
SnapshotInterval: ts.snapshotInterval,
}
// Check for existing task
raw, err := ts.LoadRaw(name)
exists := err == nil
if exists {
newTask = raw
}
// Get task type
ttStr := r.URL.Query().Get("type")
switch ttStr {
case "stream":
newTask.Type = kapacitor.StreamTask
case "batch":
newTask.Type = kapacitor.BatchTask
default:
if !exists {
if ttStr == "" {
httpd.HttpError(w, fmt.Sprintf("no task with name %q exists cannot infer type.", name), true, http.StatusBadRequest)
} else {
httpd.HttpError(w, fmt.Sprintf("unknown type %q", ttStr), true, http.StatusBadRequest)
}
return
}
}
// Get tick script
tick, err := ioutil.ReadAll(r.Body)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
if len(tick) > 0 {
newTask.TICKscript = string(tick)
} else if !exists {
httpd.HttpError(w, fmt.Sprintf("must provide TICKscript via POST data."), true, http.StatusBadRequest)
return
}
// Get dbrps
dbrpsStr := r.URL.Query().Get("dbrps")
if dbrpsStr != "" {
dbrps := make([]kapacitor.DBRP, 0)
err = json.Unmarshal([]byte(dbrpsStr), &dbrps)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
newTask.DBRPs = dbrps
} else if !exists {
httpd.HttpError(w, fmt.Sprintf("must provide at least one database and retention policy."), true, http.StatusBadRequest)
return
}
// Get snapshot interval
snapshotIntervalStr := r.URL.Query().Get("snapshot")
if snapshotIntervalStr != "" {
snapshotInterval, err := influxql.ParseDuration(snapshotIntervalStr)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
newTask.SnapshotInterval = snapshotInterval
}
err = ts.Save(newTask)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
}
func (r *Service) handleRecord(w http.ResponseWriter, req *http.Request) {
type doFunc func() error
var doF doFunc
started := make(chan struct{})
rid := uuid.NewV4()
typ := req.URL.Query().Get("type")
switch typ {
case "stream":
task := req.URL.Query().Get("name")
if task == "" {
httpd.HttpError(w, "no task specified", true, http.StatusBadRequest)
return
}
t, err := r.TaskStore.Load(task)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusNotFound)
return
}
durStr := req.URL.Query().Get("duration")
dur, err := influxql.ParseDuration(durStr)
if err != nil {
httpd.HttpError(w, "invalid duration string: "+err.Error(), true, http.StatusBadRequest)
return
}
doF = func() error {
err := r.doRecordStream(rid, dur, t.DBRPs, started)
if err != nil {
close(started)
}
return err
}
case "batch":
var err error
// Determine start time.
var start time.Time
startStr := req.URL.Query().Get("start")
pastStr := req.URL.Query().Get("past")
if startStr != "" && pastStr != "" {
httpd.HttpError(w, "must not pass both 'start' and 'past' parameters", true, http.StatusBadRequest)
return
}
now := time.Now()
switch {
case startStr != "":
start, err = time.Parse(time.RFC3339, startStr)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
case pastStr != "":
diff, err := influxql.ParseDuration(pastStr)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
start = now.Add(-1 * diff)
}
// Get stop time, if present
stop := now
stopStr := req.URL.Query().Get("stop")
if stopStr != "" {
stop, err = time.Parse(time.RFC3339, stopStr)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
}
// Get task
task := req.URL.Query().Get("name")
if task == "" {
httpd.HttpError(w, "no task specified", true, http.StatusBadRequest)
return
}
t, err := r.TaskStore.Load(task)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusNotFound)
return
}
doF = func() error {
close(started)
return r.doRecordBatch(rid, t, start, stop)
}
case "query":
query := req.URL.Query().Get("query")
if query == "" {
httpd.HttpError(w, "must pass query parameter", true, http.StatusBadRequest)
return
}
typeStr := req.URL.Query().Get("ttype")
var tt kapacitor.TaskType
switch typeStr {
case "stream":
tt = kapacitor.StreamTask
case "batch":
tt = kapacitor.BatchTask
default:
httpd.HttpError(w, fmt.Sprintf("invalid type %q", typeStr), true, http.StatusBadRequest)
return
}
doF = func() error {
close(started)
return r.doRecordQuery(rid, query, tt)
}
default:
httpd.HttpError(w, "invalid recording type", true, http.StatusBadRequest)
return
}
// Store recording in running recordings.
errC := make(chan error, 1)
func() {
r.recordingsMu.Lock()
defer r.recordingsMu.Unlock()
r.runningRecordings[rid.String()] = errC
}()
// Spawn routine to perform actual recording.
go func() {
err := doF()
if err != nil {
// Always log an error since the user may not have requested the error.
r.logger.Printf("E! recording %s failed: %v", rid.String(), err)
}
errC <- err
// We have finished delete from running map
r.recordingsMu.Lock()
defer r.recordingsMu.Unlock()
delete(r.runningRecordings, rid.String())
}()
// Wait till the goroutine for doing the recording has actually started
<-started
// Respond with the recording ID
type response struct {
RecordingID string `json:"RecordingID"`
}
w.Write(httpd.MarshalJSON(response{rid.String()}, true))
}
func (r *Service) handleReplay(w http.ResponseWriter, req *http.Request) {
name := req.URL.Query().Get("name")
id := req.URL.Query().Get("id")
clockTyp := req.URL.Query().Get("clock")
recTimeStr := req.URL.Query().Get("rec-time")
var recTime bool
if recTimeStr != "" {
var err error
recTime, err = strconv.ParseBool(recTimeStr)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
}
t, err := r.TaskStore.Load(name)
if err != nil {
httpd.HttpError(w, "task load: "+err.Error(), true, http.StatusNotFound)
return
}
var clk clock.Clock
switch clockTyp {
case "", "wall":
clk = clock.Wall()
case "fast":
clk = clock.Fast()
}
// Create new isolated task master
tm := r.TaskMaster.New()
tm.Open()
defer tm.Close()
et, err := tm.StartTask(t)
if err != nil {
httpd.HttpError(w, "task start: "+err.Error(), true, http.StatusBadRequest)
return
}
replay := kapacitor.NewReplay(clk)
var replayC <-chan error
switch t.Type {
case kapacitor.StreamTask:
f, err := r.FindStreamRecording(id)
if err != nil {
httpd.HttpError(w, "replay find: "+err.Error(), true, http.StatusNotFound)
return
}
stream, err := tm.Stream(id)
if err != nil {
httpd.HttpError(w, "stream start: "+err.Error(), true, http.StatusInternalServerError)
return
}
replayC = replay.ReplayStream(f, stream, recTime, precision)
case kapacitor.BatchTask:
fs, err := r.FindBatchRecording(id)
if err != nil {
httpd.HttpError(w, "replay find: "+err.Error(), true, http.StatusNotFound)
return
}
batches := tm.BatchCollectors(name)
replayC = replay.ReplayBatch(fs, batches, recTime)
}
// Check for error on replay
err = <-replayC
if err != nil {
httpd.HttpError(w, "replay: "+err.Error(), true, http.StatusInternalServerError)
return
}
// Drain tm so the task can finish
tm.Drain()
// Check for error on task
err = et.Err()
if err != nil {
httpd.HttpError(w, "task run: "+err.Error(), true, http.StatusInternalServerError)
return
}
// Call close explicity to check for error
err = tm.Close()
if err != nil {
httpd.HttpError(w, "closing: "+err.Error(), true, http.StatusInternalServerError)
return
}
}
func (ts *Service) handleUpdateTask(w http.ResponseWriter, r *http.Request) {
id, err := ts.taskIDFromPath(r.URL.Path)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
task := client.UpdateTaskOptions{}
dec := json.NewDecoder(r.Body)
err = dec.Decode(&task)
if err != nil {
httpd.HttpError(w, "invalid JSON", true, http.StatusBadRequest)
return
}
// Check for existing task
original, err := ts.tasks.Get(id)
if err != nil {
httpd.HttpError(w, "task does not exist, cannot update", true, http.StatusNotFound)
return
}
updated := original
// Set ID if changing
if task.ID != "" {
updated.ID = task.ID
}
if task.TemplateID != "" || updated.TemplateID != "" {
templateID := task.TemplateID
if templateID == "" {
templateID = updated.TemplateID
}
template, err := ts.templates.Get(templateID)
if err != nil {
httpd.HttpError(w, fmt.Sprintf("unknown template %s: err: %s", task.TemplateID, err), true, http.StatusBadRequest)
return
}
if original.ID != updated.ID || original.TemplateID != updated.TemplateID {
if original.TemplateID != "" {
if err := ts.templates.DisassociateTask(original.TemplateID, original.ID); err != nil {
httpd.HttpError(w, fmt.Sprintf("failed to disassociate task with template: %s", err), true, http.StatusBadRequest)
return
}
}
if err := ts.templates.AssociateTask(templateID, updated.ID); err != nil {
httpd.HttpError(w, fmt.Sprintf("failed to associate task with template: %s", err), true, http.StatusBadRequest)
return
}
}
updated.Type = template.Type
updated.TICKscript = template.TICKscript
updated.TemplateID = templateID
} else {
// Only set type and script if not a templated task
// Set task type
switch task.Type {
case client.StreamTask:
updated.Type = StreamTask
case client.BatchTask:
updated.Type = BatchTask
}
// Set tick script
if task.TICKscript != "" {
updated.TICKscript = task.TICKscript
}
}
// Set dbrps
if len(task.DBRPs) > 0 {
updated.DBRPs = make([]DBRP, len(task.DBRPs))
for i, dbrp := range task.DBRPs {
updated.DBRPs[i] = DBRP{
Database: dbrp.Database,
RetentionPolicy: dbrp.RetentionPolicy,
}
}
}
// Set status
previousStatus := updated.Status
switch task.Status {
case client.Enabled:
updated.Status = Enabled
case client.Disabled:
updated.Status = Disabled
}
statusChanged := previousStatus != updated.Status
// Set vars
if len(task.Vars) > 0 {
updated.Vars, err = ts.convertToServiceVars(task.Vars)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
}
// Validate task
_, err = ts.newKapacitorTask(updated)
if err != nil {
httpd.HttpError(w, "invalid TICKscript: "+err.Error(), true, http.StatusBadRequest)
return
}
now := time.Now()
updated.Modified = now
if statusChanged && updated.Status == Enabled {
updated.LastEnabled = now
}
if original.ID != updated.ID {
// Task ID changed delete and re-create.
if err := ts.tasks.Create(updated); err != nil {
httpd.HttpError(w, fmt.Sprintf("failed to create new task during ID change: %s", err.Error()), true, http.StatusInternalServerError)
return
}
if err := ts.tasks.Delete(original.ID); err != nil {
ts.logger.Printf("E! failed to delete old task definition during ID change: old ID: %s new ID: %s, %s", original.ID, updated.ID, err.Error())
}
if original.Status == Enabled && updated.Status == Enabled {
// Stop task and start it under new name
ts.stopTask(original.ID)
if err := ts.startTask(updated); err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
}
} else {
if err := ts.tasks.Replace(updated); err != nil {
httpd.HttpError(w, fmt.Sprintf("failed to replace task definition: %s", err.Error()), true, http.StatusInternalServerError)
return
}
}
if statusChanged {
// Enable/Disable task
switch updated.Status {
case Enabled:
kapacitor.NumEnabledTasksVar.Add(1)
err = ts.startTask(updated)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
case Disabled:
kapacitor.NumEnabledTasksVar.Add(-1)
ts.stopTask(original.ID)
}
}
t, err := ts.convertTask(updated, "formatted", "attributes", ts.TaskMasterLookup.Main())
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusOK)
w.Write(httpd.MarshalJSON(t, true))
}
func (ts *Service) handleCreateTask(w http.ResponseWriter, r *http.Request) {
task := client.CreateTaskOptions{}
dec := json.NewDecoder(r.Body)
err := dec.Decode(&task)
if err != nil {
httpd.HttpError(w, "invalid JSON", true, http.StatusBadRequest)
return
}
if task.ID == "" {
task.ID = uuid.NewV4().String()
}
if !validTaskID.MatchString(task.ID) {
httpd.HttpError(w, fmt.Sprintf("task ID must contain only letters, numbers, '-', '.' and '_'. %q", task.ID), true, http.StatusBadRequest)
return
}
newTask := Task{
ID: task.ID,
}
// Check for existing task
_, err = ts.tasks.Get(task.ID)
if err == nil {
httpd.HttpError(w, fmt.Sprintf("task %s already exists", task.ID), true, http.StatusBadRequest)
return
}
// Check for template ID
if task.TemplateID != "" {
template, err := ts.templates.Get(task.TemplateID)
if err != nil {
httpd.HttpError(w, fmt.Sprintf("unknown template %s: err: %s", task.TemplateID, err), true, http.StatusBadRequest)
return
}
newTask.Type = template.Type
newTask.TICKscript = template.TICKscript
newTask.TemplateID = task.TemplateID
switch template.Type {
case StreamTask:
task.Type = client.StreamTask
case BatchTask:
task.Type = client.BatchTask
}
task.TICKscript = template.TICKscript
if err := ts.templates.AssociateTask(task.TemplateID, newTask.ID); err != nil {
httpd.HttpError(w, fmt.Sprintf("failed to associate task with template: %s", err), true, http.StatusBadRequest)
return
}
} else {
// Set task type
switch task.Type {
case client.StreamTask:
newTask.Type = StreamTask
case client.BatchTask:
newTask.Type = BatchTask
default:
httpd.HttpError(w, fmt.Sprintf("unknown type %q", task.Type), true, http.StatusBadRequest)
return
}
// Set tick script
newTask.TICKscript = task.TICKscript
if newTask.TICKscript == "" {
httpd.HttpError(w, fmt.Sprintf("must provide TICKscript"), true, http.StatusBadRequest)
return
}
}
// Set dbrps
newTask.DBRPs = make([]DBRP, len(task.DBRPs))
for i, dbrp := range task.DBRPs {
newTask.DBRPs[i] = DBRP{
Database: dbrp.Database,
RetentionPolicy: dbrp.RetentionPolicy,
}
}
if len(newTask.DBRPs) == 0 {
httpd.HttpError(w, fmt.Sprintf("must provide at least one database and retention policy."), true, http.StatusBadRequest)
return
}
// Set status
switch task.Status {
case client.Enabled:
newTask.Status = Enabled
case client.Disabled:
newTask.Status = Disabled
default:
newTask.Status = Disabled
}
// Set vars
newTask.Vars, err = ts.convertToServiceVars(task.Vars)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
// Validate task
_, err = ts.newKapacitorTask(newTask)
if err != nil {
httpd.HttpError(w, "invalid TICKscript: "+err.Error(), true, http.StatusBadRequest)
return
}
now := time.Now()
newTask.Created = now
newTask.Modified = now
if newTask.Status == Enabled {
newTask.LastEnabled = now
}
// Save task
err = ts.tasks.Create(newTask)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
// Count new task
kapacitor.NumTasksVar.Add(1)
if newTask.Status == Enabled {
//Count new enabled task
kapacitor.NumEnabledTasksVar.Add(1)
// Start task
err = ts.startTask(newTask)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
}
// Return task info
t, err := ts.convertTask(newTask, "formatted", "attributes", ts.TaskMasterLookup.Main())
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusOK)
w.Write(httpd.MarshalJSON(t, true))
}
func (ts *Service) handleListTasks(w http.ResponseWriter, r *http.Request) {
pattern := r.URL.Query().Get("pattern")
fields := r.URL.Query()["fields"]
if len(fields) == 0 {
fields = allTaskFields
} else {
// Always return ID field
fields = append(fields, "id", "link")
}
scriptFormat := r.URL.Query().Get("script-format")
switch scriptFormat {
case "":
scriptFormat = "formatted"
case "formatted":
case "raw":
default:
httpd.HttpError(w, fmt.Sprintf("invalid script-format parameter %q", scriptFormat), true, http.StatusBadRequest)
return
}
dotView := r.URL.Query().Get("dot-view")
switch dotView {
case "":
dotView = "attributes"
case "attributes":
case "labels":
default:
httpd.HttpError(w, fmt.Sprintf("invalid dot-view parameter %q", dotView), true, http.StatusBadRequest)
return
}
var err error
offset := int64(0)
offsetStr := r.URL.Query().Get("offset")
if offsetStr != "" {
offset, err = strconv.ParseInt(offsetStr, 10, 64)
if err != nil {
httpd.HttpError(w, fmt.Sprintf("invalid offset parameter %q must be an integer: %s", offsetStr, err), true, http.StatusBadRequest)
}
}
limit := int64(100)
limitStr := r.URL.Query().Get("limit")
if limitStr != "" {
limit, err = strconv.ParseInt(limitStr, 10, 64)
if err != nil {
httpd.HttpError(w, fmt.Sprintf("invalid limit parameter %q must be an integer: %s", limitStr, err), true, http.StatusBadRequest)
}
}
rawTasks, err := ts.tasks.List(pattern, int(offset), int(limit))
tasks := make([]map[string]interface{}, len(rawTasks))
tm := ts.TaskMasterLookup.Main()
for i, task := range rawTasks {
tasks[i] = make(map[string]interface{}, len(fields))
executing := tm.IsExecuting(task.ID)
for _, field := range fields {
var value interface{}
switch field {
case "id":
value = task.ID
case "link":
value = ts.taskLink(task.ID)
case "type":
switch task.Type {
case StreamTask:
value = client.StreamTask
case BatchTask:
value = client.BatchTask
}
case "dbrps":
dbrps := make([]client.DBRP, len(task.DBRPs))
for i, dbrp := range task.DBRPs {
dbrps[i] = client.DBRP{
Database: dbrp.Database,
RetentionPolicy: dbrp.RetentionPolicy,
}
}
value = dbrps
case "script":
value = task.TICKscript
if scriptFormat == "formatted" {
formatted, err := tick.Format(task.TICKscript)
if err == nil {
// Only format if it succeeded.
// Otherwise a change in syntax may prevent task retrieval.
value = formatted
}
}
case "executing":
value = executing
case "dot":
if executing {
value = tm.ExecutingDot(task.ID, dotView == "labels")
} else {
kt, err := ts.newKapacitorTask(task)
if err != nil {
break
}
value = string(kt.Dot())
}
case "stats":
if executing {
s, err := tm.ExecutionStats(task.ID)
if err != nil {
ts.logger.Printf("E! failed to retrieve stats for task %s: %v", task.ID, err)
} else {
value = client.ExecutionStats{
TaskStats: s.TaskStats,
NodeStats: s.NodeStats,
}
}
}
case "error":
value = task.Error
case "status":
switch task.Status {
case Disabled:
value = client.Disabled
case Enabled:
value = client.Enabled
}
case "created":
value = task.Created
case "modified":
value = task.Modified
case "last-enabled":
value = task.LastEnabled
default:
httpd.HttpError(w, fmt.Sprintf("unsupported field %q", field), true, http.StatusBadRequest)
return
}
tasks[i][field] = value
}
}
type response struct {
Tasks []map[string]interface{} `json:"tasks"`
}
w.Write(httpd.MarshalJSON(response{tasks}, true))
}
func (ts *Service) handleUpdateTemplate(w http.ResponseWriter, r *http.Request) {
id, err := ts.templateIDFromPath(r.URL.Path)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusBadRequest)
return
}
template := client.UpdateTemplateOptions{}
dec := json.NewDecoder(r.Body)
err = dec.Decode(&template)
if err != nil {
httpd.HttpError(w, "invalid JSON", true, http.StatusBadRequest)
return
}
// Check for existing template
original, err := ts.templates.Get(id)
if err != nil {
httpd.HttpError(w, "template does not exist, cannot update", true, http.StatusNotFound)
return
}
updated := original
// Set ID
if template.ID != "" {
updated.ID = template.ID
}
// Set template type
switch template.Type {
case client.StreamTask:
updated.Type = StreamTask
case client.BatchTask:
updated.Type = BatchTask
}
// Set tick script
if template.TICKscript != "" {
updated.TICKscript = template.TICKscript
}
// Validate template
_, err = ts.templateTask(updated)
if err != nil {
httpd.HttpError(w, "invalid TICKscript: "+err.Error(), true, http.StatusBadRequest)
return
}
// Get associated tasks
taskIds, err := ts.templates.ListAssociatedTasks(original.ID)
if err != nil {
httpd.HttpError(w, fmt.Sprintf("error getting associated tasks for template %s: %s", original.ID, err.Error()), true, http.StatusInternalServerError)
return
}
// Save updated template
now := time.Now()
updated.Modified = now
if original.ID != updated.ID {
if err := ts.templates.Create(updated); err != nil {
httpd.HttpError(w, fmt.Sprintf("failed to create new template for ID change: %s", err.Error()), true, http.StatusInternalServerError)
return
}
if err := ts.templates.Delete(original.ID); err != nil {
ts.logger.Printf("E! failed to delete old template during ID change, old ID: %s new ID: %s, %s", original.ID, updated.ID, err.Error())
}
} else {
if err := ts.templates.Replace(updated); err != nil {
httpd.HttpError(w, fmt.Sprintf("failed to replace template definition: %s", err.Error()), true, http.StatusInternalServerError)
return
}
}
// Update all associated tasks
err = ts.updateAllAssociatedTasks(original, updated, taskIds)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
// Return template definition
t, err := ts.convertTemplate(updated, "formatted")
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusOK)
w.Write(httpd.MarshalJSON(t, true))
}
func (ts *Service) handleCreateTemplate(w http.ResponseWriter, r *http.Request) {
template := client.CreateTemplateOptions{}
dec := json.NewDecoder(r.Body)
err := dec.Decode(&template)
if err != nil {
httpd.HttpError(w, "invalid JSON", true, http.StatusBadRequest)
return
}
if template.ID == "" {
template.ID = uuid.NewV4().String()
}
if !validTemplateID.MatchString(template.ID) {
httpd.HttpError(w, fmt.Sprintf("template ID must contain only letters, numbers, '-', '.' and '_'. %q", template.ID), true, http.StatusBadRequest)
return
}
newTemplate := Template{
ID: template.ID,
}
// Check for existing template
_, err = ts.templates.Get(template.ID)
if err == nil {
httpd.HttpError(w, fmt.Sprintf("template %s already exists", template.ID), true, http.StatusBadRequest)
return
}
// Set template type
switch template.Type {
case client.StreamTask:
newTemplate.Type = StreamTask
case client.BatchTask:
newTemplate.Type = BatchTask
default:
httpd.HttpError(w, fmt.Sprintf("unknown type %q", template.Type), true, http.StatusBadRequest)
return
}
// Set tick script
newTemplate.TICKscript = template.TICKscript
if newTemplate.TICKscript == "" {
httpd.HttpError(w, fmt.Sprintf("must provide TICKscript"), true, http.StatusBadRequest)
return
}
// Validate template
_, err = ts.templateTask(newTemplate)
if err != nil {
httpd.HttpError(w, "invalid TICKscript: "+err.Error(), true, http.StatusBadRequest)
return
}
now := time.Now()
newTemplate.Created = now
newTemplate.Modified = now
// Save template
err = ts.templates.Create(newTemplate)
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
// Return template definition
t, err := ts.convertTemplate(newTemplate, "formatted")
if err != nil {
httpd.HttpError(w, err.Error(), true, http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusOK)
w.Write(httpd.MarshalJSON(t, true))
}