mirror of
https://github.com/prometheus/prometheus.git
synced 2024-11-10 07:34:04 -08:00
805 lines
21 KiB
Go
805 lines
21 KiB
Go
// Copyright 2016 The Prometheus Authors
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package v1
|
|
|
|
import (
|
|
"context"
|
|
"encoding/json"
|
|
"errors"
|
|
"fmt"
|
|
"math"
|
|
"math/rand"
|
|
"net/http"
|
|
"net/url"
|
|
"os"
|
|
"path/filepath"
|
|
"sort"
|
|
"strconv"
|
|
"time"
|
|
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/common/model"
|
|
"github.com/prometheus/common/route"
|
|
"github.com/prometheus/tsdb"
|
|
|
|
"github.com/prometheus/prometheus/config"
|
|
"github.com/prometheus/prometheus/pkg/labels"
|
|
"github.com/prometheus/prometheus/pkg/timestamp"
|
|
"github.com/prometheus/prometheus/prompb"
|
|
"github.com/prometheus/prometheus/promql"
|
|
"github.com/prometheus/prometheus/scrape"
|
|
"github.com/prometheus/prometheus/storage"
|
|
"github.com/prometheus/prometheus/storage/remote"
|
|
"github.com/prometheus/prometheus/util/httputil"
|
|
"github.com/prometheus/prometheus/util/stats"
|
|
tsdbLabels "github.com/prometheus/tsdb/labels"
|
|
)
|
|
|
|
type status string
|
|
|
|
const (
|
|
statusSuccess status = "success"
|
|
statusError status = "error"
|
|
)
|
|
|
|
type errorType string
|
|
|
|
const (
|
|
errorNone errorType = ""
|
|
errorTimeout errorType = "timeout"
|
|
errorCanceled errorType = "canceled"
|
|
errorExec errorType = "execution"
|
|
errorBadData errorType = "bad_data"
|
|
errorInternal errorType = "internal"
|
|
errorUnavailable errorType = "unavailable"
|
|
)
|
|
|
|
var corsHeaders = map[string]string{
|
|
"Access-Control-Allow-Headers": "Accept, Authorization, Content-Type, Origin",
|
|
"Access-Control-Allow-Methods": "GET, OPTIONS",
|
|
"Access-Control-Allow-Origin": "*",
|
|
"Access-Control-Expose-Headers": "Date",
|
|
}
|
|
|
|
type apiError struct {
|
|
typ errorType
|
|
err error
|
|
}
|
|
|
|
func (e *apiError) Error() string {
|
|
return fmt.Sprintf("%s: %s", e.typ, e.err)
|
|
}
|
|
|
|
type targetRetriever interface {
|
|
Targets() []*scrape.Target
|
|
}
|
|
|
|
type alertmanagerRetriever interface {
|
|
Alertmanagers() []*url.URL
|
|
DroppedAlertmanagers() []*url.URL
|
|
}
|
|
|
|
type response struct {
|
|
Status status `json:"status"`
|
|
Data interface{} `json:"data,omitempty"`
|
|
ErrorType errorType `json:"errorType,omitempty"`
|
|
Error string `json:"error,omitempty"`
|
|
}
|
|
|
|
// Enables cross-site script calls.
|
|
func setCORS(w http.ResponseWriter) {
|
|
for h, v := range corsHeaders {
|
|
w.Header().Set(h, v)
|
|
}
|
|
}
|
|
|
|
type apiFunc func(r *http.Request) (interface{}, *apiError)
|
|
|
|
// API can register a set of endpoints in a router and handle
|
|
// them using the provided storage and query engine.
|
|
type API struct {
|
|
Queryable storage.Queryable
|
|
QueryEngine *promql.Engine
|
|
|
|
targetRetriever targetRetriever
|
|
alertmanagerRetriever alertmanagerRetriever
|
|
|
|
now func() time.Time
|
|
config func() config.Config
|
|
flagsMap map[string]string
|
|
ready func(http.HandlerFunc) http.HandlerFunc
|
|
|
|
db func() *tsdb.DB
|
|
enableAdmin bool
|
|
}
|
|
|
|
// NewAPI returns an initialized API type.
|
|
func NewAPI(
|
|
qe *promql.Engine,
|
|
q storage.Queryable,
|
|
tr targetRetriever,
|
|
ar alertmanagerRetriever,
|
|
configFunc func() config.Config,
|
|
flagsMap map[string]string,
|
|
readyFunc func(http.HandlerFunc) http.HandlerFunc,
|
|
db func() *tsdb.DB,
|
|
enableAdmin bool,
|
|
) *API {
|
|
return &API{
|
|
QueryEngine: qe,
|
|
Queryable: q,
|
|
targetRetriever: tr,
|
|
alertmanagerRetriever: ar,
|
|
now: time.Now,
|
|
config: configFunc,
|
|
flagsMap: flagsMap,
|
|
ready: readyFunc,
|
|
db: db,
|
|
enableAdmin: enableAdmin,
|
|
}
|
|
}
|
|
|
|
// Register the API's endpoints in the given router.
|
|
func (api *API) Register(r *route.Router) {
|
|
instr := func(name string, f apiFunc) http.HandlerFunc {
|
|
hf := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
setCORS(w)
|
|
if data, err := f(r); err != nil {
|
|
respondError(w, err, data)
|
|
} else if data != nil {
|
|
respond(w, data)
|
|
} else {
|
|
w.WriteHeader(http.StatusNoContent)
|
|
}
|
|
})
|
|
return api.ready(prometheus.InstrumentHandler(name, httputil.CompressionHandler{
|
|
Handler: hf,
|
|
}))
|
|
}
|
|
|
|
r.Options("/*path", instr("options", api.options))
|
|
|
|
r.Get("/query", instr("query", api.query))
|
|
r.Post("/query", instr("query", api.query))
|
|
r.Get("/query_range", instr("query_range", api.queryRange))
|
|
r.Post("/query_range", instr("query_range", api.queryRange))
|
|
|
|
r.Get("/label/:name/values", instr("label_values", api.labelValues))
|
|
|
|
r.Get("/series", instr("series", api.series))
|
|
r.Del("/series", instr("drop_series", api.dropSeries))
|
|
|
|
r.Get("/targets", instr("targets", api.targets))
|
|
r.Get("/alertmanagers", instr("alertmanagers", api.alertmanagers))
|
|
|
|
r.Get("/status/config", instr("config", api.serveConfig))
|
|
r.Get("/status/flags", instr("flags", api.serveFlags))
|
|
r.Post("/read", api.ready(prometheus.InstrumentHandler("read", http.HandlerFunc(api.remoteRead))))
|
|
|
|
// Admin APIs
|
|
r.Post("/admin/tsdb/delete_series", instr("delete_series", api.deleteSeries))
|
|
r.Post("/admin/tsdb/clean_tombstones", instr("clean_tombstones", api.cleanTombstones))
|
|
r.Post("/admin/tsdb/snapshot", instr("snapshot", api.snapshot))
|
|
}
|
|
|
|
type queryData struct {
|
|
ResultType promql.ValueType `json:"resultType"`
|
|
Result promql.Value `json:"result"`
|
|
Stats *stats.QueryStats `json:"stats,omitempty"`
|
|
}
|
|
|
|
func (api *API) options(r *http.Request) (interface{}, *apiError) {
|
|
return nil, nil
|
|
}
|
|
|
|
func (api *API) query(r *http.Request) (interface{}, *apiError) {
|
|
var ts time.Time
|
|
if t := r.FormValue("time"); t != "" {
|
|
var err error
|
|
ts, err = parseTime(t)
|
|
if err != nil {
|
|
return nil, &apiError{errorBadData, err}
|
|
}
|
|
} else {
|
|
ts = api.now()
|
|
}
|
|
|
|
ctx := r.Context()
|
|
if to := r.FormValue("timeout"); to != "" {
|
|
var cancel context.CancelFunc
|
|
timeout, err := parseDuration(to)
|
|
if err != nil {
|
|
return nil, &apiError{errorBadData, err}
|
|
}
|
|
|
|
ctx, cancel = context.WithTimeout(ctx, timeout)
|
|
defer cancel()
|
|
}
|
|
|
|
qry, err := api.QueryEngine.NewInstantQuery(api.Queryable, r.FormValue("query"), ts)
|
|
if err != nil {
|
|
return nil, &apiError{errorBadData, err}
|
|
}
|
|
|
|
res := qry.Exec(ctx)
|
|
if res.Err != nil {
|
|
switch res.Err.(type) {
|
|
case promql.ErrQueryCanceled:
|
|
return nil, &apiError{errorCanceled, res.Err}
|
|
case promql.ErrQueryTimeout:
|
|
return nil, &apiError{errorTimeout, res.Err}
|
|
case promql.ErrStorage:
|
|
return nil, &apiError{errorInternal, res.Err}
|
|
}
|
|
return nil, &apiError{errorExec, res.Err}
|
|
}
|
|
|
|
// Optional stats field in response if parameter "stats" is not empty.
|
|
var qs *stats.QueryStats
|
|
if r.FormValue("stats") != "" {
|
|
qs = stats.NewQueryStats(qry.Stats())
|
|
}
|
|
|
|
return &queryData{
|
|
ResultType: res.Value.Type(),
|
|
Result: res.Value,
|
|
Stats: qs,
|
|
}, nil
|
|
}
|
|
|
|
func (api *API) queryRange(r *http.Request) (interface{}, *apiError) {
|
|
start, err := parseTime(r.FormValue("start"))
|
|
if err != nil {
|
|
return nil, &apiError{errorBadData, err}
|
|
}
|
|
end, err := parseTime(r.FormValue("end"))
|
|
if err != nil {
|
|
return nil, &apiError{errorBadData, err}
|
|
}
|
|
if end.Before(start) {
|
|
err := errors.New("end timestamp must not be before start time")
|
|
return nil, &apiError{errorBadData, err}
|
|
}
|
|
|
|
step, err := parseDuration(r.FormValue("step"))
|
|
if err != nil {
|
|
return nil, &apiError{errorBadData, err}
|
|
}
|
|
|
|
if step <= 0 {
|
|
err := errors.New("zero or negative query resolution step widths are not accepted. Try a positive integer")
|
|
return nil, &apiError{errorBadData, err}
|
|
}
|
|
|
|
// For safety, limit the number of returned points per timeseries.
|
|
// This is sufficient for 60s resolution for a week or 1h resolution for a year.
|
|
if end.Sub(start)/step > 11000 {
|
|
err := errors.New("exceeded maximum resolution of 11,000 points per timeseries. Try decreasing the query resolution (?step=XX)")
|
|
return nil, &apiError{errorBadData, err}
|
|
}
|
|
|
|
ctx := r.Context()
|
|
if to := r.FormValue("timeout"); to != "" {
|
|
var cancel context.CancelFunc
|
|
timeout, err := parseDuration(to)
|
|
if err != nil {
|
|
return nil, &apiError{errorBadData, err}
|
|
}
|
|
|
|
ctx, cancel = context.WithTimeout(ctx, timeout)
|
|
defer cancel()
|
|
}
|
|
|
|
qry, err := api.QueryEngine.NewRangeQuery(api.Queryable, r.FormValue("query"), start, end, step)
|
|
if err != nil {
|
|
return nil, &apiError{errorBadData, err}
|
|
}
|
|
|
|
res := qry.Exec(ctx)
|
|
if res.Err != nil {
|
|
switch res.Err.(type) {
|
|
case promql.ErrQueryCanceled:
|
|
return nil, &apiError{errorCanceled, res.Err}
|
|
case promql.ErrQueryTimeout:
|
|
return nil, &apiError{errorTimeout, res.Err}
|
|
}
|
|
return nil, &apiError{errorExec, res.Err}
|
|
}
|
|
|
|
// Optional stats field in response if parameter "stats" is not empty.
|
|
var qs *stats.QueryStats
|
|
if r.FormValue("stats") != "" {
|
|
qs = stats.NewQueryStats(qry.Stats())
|
|
}
|
|
|
|
return &queryData{
|
|
ResultType: res.Value.Type(),
|
|
Result: res.Value,
|
|
Stats: qs,
|
|
}, nil
|
|
}
|
|
|
|
func (api *API) labelValues(r *http.Request) (interface{}, *apiError) {
|
|
ctx := r.Context()
|
|
name := route.Param(ctx, "name")
|
|
|
|
if !model.LabelNameRE.MatchString(name) {
|
|
return nil, &apiError{errorBadData, fmt.Errorf("invalid label name: %q", name)}
|
|
}
|
|
q, err := api.Queryable.Querier(ctx, math.MinInt64, math.MaxInt64)
|
|
if err != nil {
|
|
return nil, &apiError{errorExec, err}
|
|
}
|
|
defer q.Close()
|
|
|
|
vals, err := q.LabelValues(name)
|
|
if err != nil {
|
|
return nil, &apiError{errorExec, err}
|
|
}
|
|
|
|
return vals, nil
|
|
}
|
|
|
|
var (
|
|
minTime = time.Unix(math.MinInt64/1000+62135596801, 0)
|
|
maxTime = time.Unix(math.MaxInt64/1000-62135596801, 999999999)
|
|
)
|
|
|
|
func (api *API) series(r *http.Request) (interface{}, *apiError) {
|
|
r.ParseForm()
|
|
if len(r.Form["match[]"]) == 0 {
|
|
return nil, &apiError{errorBadData, fmt.Errorf("no match[] parameter provided")}
|
|
}
|
|
|
|
var start time.Time
|
|
if t := r.FormValue("start"); t != "" {
|
|
var err error
|
|
start, err = parseTime(t)
|
|
if err != nil {
|
|
return nil, &apiError{errorBadData, err}
|
|
}
|
|
} else {
|
|
start = minTime
|
|
}
|
|
|
|
var end time.Time
|
|
if t := r.FormValue("end"); t != "" {
|
|
var err error
|
|
end, err = parseTime(t)
|
|
if err != nil {
|
|
return nil, &apiError{errorBadData, err}
|
|
}
|
|
} else {
|
|
end = maxTime
|
|
}
|
|
|
|
var matcherSets [][]*labels.Matcher
|
|
for _, s := range r.Form["match[]"] {
|
|
matchers, err := promql.ParseMetricSelector(s)
|
|
if err != nil {
|
|
return nil, &apiError{errorBadData, err}
|
|
}
|
|
matcherSets = append(matcherSets, matchers)
|
|
}
|
|
|
|
q, err := api.Queryable.Querier(r.Context(), timestamp.FromTime(start), timestamp.FromTime(end))
|
|
if err != nil {
|
|
return nil, &apiError{errorExec, err}
|
|
}
|
|
defer q.Close()
|
|
|
|
var sets []storage.SeriesSet
|
|
for _, mset := range matcherSets {
|
|
s, err := q.Select(nil, mset...)
|
|
if err != nil {
|
|
return nil, &apiError{errorExec, err}
|
|
}
|
|
sets = append(sets, s)
|
|
}
|
|
|
|
set := storage.NewMergeSeriesSet(sets)
|
|
metrics := []labels.Labels{}
|
|
for set.Next() {
|
|
metrics = append(metrics, set.At().Labels())
|
|
}
|
|
if set.Err() != nil {
|
|
return nil, &apiError{errorExec, set.Err()}
|
|
}
|
|
|
|
return metrics, nil
|
|
}
|
|
|
|
func (api *API) dropSeries(r *http.Request) (interface{}, *apiError) {
|
|
return nil, &apiError{errorInternal, fmt.Errorf("not implemented")}
|
|
}
|
|
|
|
// Target has the information for one target.
|
|
type Target struct {
|
|
// Labels before any processing.
|
|
DiscoveredLabels map[string]string `json:"discoveredLabels"`
|
|
// Any labels that are added to this target and its metrics.
|
|
Labels map[string]string `json:"labels"`
|
|
|
|
ScrapeURL string `json:"scrapeUrl"`
|
|
|
|
LastError string `json:"lastError"`
|
|
LastScrape time.Time `json:"lastScrape"`
|
|
Health scrape.TargetHealth `json:"health"`
|
|
}
|
|
|
|
// TargetDiscovery has all the active targets.
|
|
type TargetDiscovery struct {
|
|
ActiveTargets []*Target `json:"activeTargets"`
|
|
}
|
|
|
|
func (api *API) targets(r *http.Request) (interface{}, *apiError) {
|
|
targets := api.targetRetriever.Targets()
|
|
res := &TargetDiscovery{ActiveTargets: make([]*Target, len(targets))}
|
|
|
|
for i, t := range targets {
|
|
lastErrStr := ""
|
|
lastErr := t.LastError()
|
|
if lastErr != nil {
|
|
lastErrStr = lastErr.Error()
|
|
}
|
|
|
|
res.ActiveTargets[i] = &Target{
|
|
DiscoveredLabels: t.DiscoveredLabels().Map(),
|
|
Labels: t.Labels().Map(),
|
|
ScrapeURL: t.URL().String(),
|
|
LastError: lastErrStr,
|
|
LastScrape: t.LastScrape(),
|
|
Health: t.Health(),
|
|
}
|
|
}
|
|
|
|
return res, nil
|
|
}
|
|
|
|
// AlertmanagerDiscovery has all the active Alertmanagers.
|
|
type AlertmanagerDiscovery struct {
|
|
ActiveAlertmanagers []*AlertmanagerTarget `json:"activeAlertmanagers"`
|
|
DroppedAlertmanagers []*AlertmanagerTarget `json:"droppedAlertmanagers"`
|
|
}
|
|
|
|
// AlertmanagerTarget has info on one AM.
|
|
type AlertmanagerTarget struct {
|
|
URL string `json:"url"`
|
|
}
|
|
|
|
func (api *API) alertmanagers(r *http.Request) (interface{}, *apiError) {
|
|
urls := api.alertmanagerRetriever.Alertmanagers()
|
|
droppedURLS := api.alertmanagerRetriever.DroppedAlertmanagers()
|
|
ams := &AlertmanagerDiscovery{ActiveAlertmanagers: make([]*AlertmanagerTarget, len(urls)), DroppedAlertmanagers: make([]*AlertmanagerTarget, len(droppedURLS))}
|
|
for i, url := range urls {
|
|
ams.ActiveAlertmanagers[i] = &AlertmanagerTarget{URL: url.String()}
|
|
}
|
|
for i, url := range droppedURLS {
|
|
ams.DroppedAlertmanagers[i] = &AlertmanagerTarget{URL: url.String()}
|
|
}
|
|
return ams, nil
|
|
}
|
|
|
|
type prometheusConfig struct {
|
|
YAML string `json:"yaml"`
|
|
}
|
|
|
|
func (api *API) serveConfig(r *http.Request) (interface{}, *apiError) {
|
|
cfg := &prometheusConfig{
|
|
YAML: api.config().String(),
|
|
}
|
|
return cfg, nil
|
|
}
|
|
|
|
func (api *API) serveFlags(r *http.Request) (interface{}, *apiError) {
|
|
return api.flagsMap, nil
|
|
}
|
|
|
|
func (api *API) remoteRead(w http.ResponseWriter, r *http.Request) {
|
|
req, err := remote.DecodeReadRequest(r)
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
resp := prompb.ReadResponse{
|
|
Results: make([]*prompb.QueryResult, len(req.Queries)),
|
|
}
|
|
for i, query := range req.Queries {
|
|
from, through, matchers, err := remote.FromQuery(query)
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
querier, err := api.Queryable.Querier(r.Context(), from, through)
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
defer querier.Close()
|
|
|
|
// Change equality matchers which match external labels
|
|
// to a matcher that looks for an empty label,
|
|
// as that label should not be present in the storage.
|
|
externalLabels := api.config().GlobalConfig.ExternalLabels.Clone()
|
|
filteredMatchers := make([]*labels.Matcher, 0, len(matchers))
|
|
for _, m := range matchers {
|
|
value := externalLabels[model.LabelName(m.Name)]
|
|
if m.Type == labels.MatchEqual && value == model.LabelValue(m.Value) {
|
|
matcher, err := labels.NewMatcher(labels.MatchEqual, m.Name, "")
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
filteredMatchers = append(filteredMatchers, matcher)
|
|
} else {
|
|
filteredMatchers = append(filteredMatchers, m)
|
|
}
|
|
}
|
|
|
|
set, err := querier.Select(nil, filteredMatchers...)
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
resp.Results[i], err = remote.ToQueryResult(set)
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
// Add external labels back in, in sorted order.
|
|
sortedExternalLabels := make([]*prompb.Label, 0, len(externalLabels))
|
|
for name, value := range externalLabels {
|
|
sortedExternalLabels = append(sortedExternalLabels, &prompb.Label{
|
|
Name: string(name),
|
|
Value: string(value),
|
|
})
|
|
}
|
|
sort.Slice(sortedExternalLabels, func(i, j int) bool {
|
|
return sortedExternalLabels[i].Name < sortedExternalLabels[j].Name
|
|
})
|
|
|
|
for _, ts := range resp.Results[i].Timeseries {
|
|
ts.Labels = mergeLabels(ts.Labels, sortedExternalLabels)
|
|
}
|
|
}
|
|
|
|
if err := remote.EncodeReadResponse(&resp, w); err != nil {
|
|
http.Error(w, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
}
|
|
|
|
func (api *API) deleteSeries(r *http.Request) (interface{}, *apiError) {
|
|
if !api.enableAdmin {
|
|
return nil, &apiError{errorUnavailable, errors.New("Admin APIs disabled")}
|
|
}
|
|
db := api.db()
|
|
if db == nil {
|
|
return nil, &apiError{errorUnavailable, errors.New("TSDB not ready")}
|
|
}
|
|
|
|
r.ParseForm()
|
|
if len(r.Form["match[]"]) == 0 {
|
|
return nil, &apiError{errorBadData, fmt.Errorf("no match[] parameter provided")}
|
|
}
|
|
|
|
var start time.Time
|
|
if t := r.FormValue("start"); t != "" {
|
|
var err error
|
|
start, err = parseTime(t)
|
|
if err != nil {
|
|
return nil, &apiError{errorBadData, err}
|
|
}
|
|
} else {
|
|
start = minTime
|
|
}
|
|
|
|
var end time.Time
|
|
if t := r.FormValue("end"); t != "" {
|
|
var err error
|
|
end, err = parseTime(t)
|
|
if err != nil {
|
|
return nil, &apiError{errorBadData, err}
|
|
}
|
|
} else {
|
|
end = maxTime
|
|
}
|
|
|
|
for _, s := range r.Form["match[]"] {
|
|
matchers, err := promql.ParseMetricSelector(s)
|
|
if err != nil {
|
|
return nil, &apiError{errorBadData, err}
|
|
}
|
|
|
|
var selector tsdbLabels.Selector
|
|
for _, m := range matchers {
|
|
selector = append(selector, convertMatcher(m))
|
|
}
|
|
|
|
if err := db.Delete(timestamp.FromTime(start), timestamp.FromTime(end), selector...); err != nil {
|
|
return nil, &apiError{errorInternal, err}
|
|
}
|
|
}
|
|
|
|
return nil, nil
|
|
}
|
|
|
|
func (api *API) snapshot(r *http.Request) (interface{}, *apiError) {
|
|
if !api.enableAdmin {
|
|
return nil, &apiError{errorUnavailable, errors.New("Admin APIs disabled")}
|
|
}
|
|
db := api.db()
|
|
if db == nil {
|
|
return nil, &apiError{errorUnavailable, errors.New("TSDB not ready")}
|
|
}
|
|
|
|
var (
|
|
snapdir = filepath.Join(db.Dir(), "snapshots")
|
|
name = fmt.Sprintf("%s-%x",
|
|
time.Now().UTC().Format("20060102T150405Z0700"),
|
|
rand.Int())
|
|
dir = filepath.Join(snapdir, name)
|
|
)
|
|
if err := os.MkdirAll(dir, 0777); err != nil {
|
|
return nil, &apiError{errorInternal, fmt.Errorf("create snapshot directory: %s", err)}
|
|
}
|
|
if err := db.Snapshot(dir); err != nil {
|
|
return nil, &apiError{errorInternal, fmt.Errorf("create snapshot: %s", err)}
|
|
}
|
|
|
|
return struct {
|
|
Name string `json:"name"`
|
|
}{name}, nil
|
|
}
|
|
|
|
func (api *API) cleanTombstones(r *http.Request) (interface{}, *apiError) {
|
|
if !api.enableAdmin {
|
|
return nil, &apiError{errorUnavailable, errors.New("Admin APIs disabled")}
|
|
}
|
|
db := api.db()
|
|
if db == nil {
|
|
return nil, &apiError{errorUnavailable, errors.New("TSDB not ready")}
|
|
}
|
|
|
|
if err := db.CleanTombstones(); err != nil {
|
|
return nil, &apiError{errorInternal, err}
|
|
}
|
|
|
|
return nil, nil
|
|
}
|
|
|
|
func convertMatcher(m *labels.Matcher) tsdbLabels.Matcher {
|
|
switch m.Type {
|
|
case labels.MatchEqual:
|
|
return tsdbLabels.NewEqualMatcher(m.Name, m.Value)
|
|
|
|
case labels.MatchNotEqual:
|
|
return tsdbLabels.Not(tsdbLabels.NewEqualMatcher(m.Name, m.Value))
|
|
|
|
case labels.MatchRegexp:
|
|
res, err := tsdbLabels.NewRegexpMatcher(m.Name, "^(?:"+m.Value+")$")
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return res
|
|
|
|
case labels.MatchNotRegexp:
|
|
res, err := tsdbLabels.NewRegexpMatcher(m.Name, "^(?:"+m.Value+")$")
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return tsdbLabels.Not(res)
|
|
}
|
|
panic("storage.convertMatcher: invalid matcher type")
|
|
}
|
|
|
|
// mergeLabels merges two sets of sorted proto labels, preferring those in
|
|
// primary to those in secondary when there is an overlap.
|
|
func mergeLabels(primary, secondary []*prompb.Label) []*prompb.Label {
|
|
result := make([]*prompb.Label, 0, len(primary)+len(secondary))
|
|
i, j := 0, 0
|
|
for i < len(primary) && j < len(secondary) {
|
|
if primary[i].Name < secondary[j].Name {
|
|
result = append(result, primary[i])
|
|
i++
|
|
} else if primary[i].Name > secondary[j].Name {
|
|
result = append(result, secondary[j])
|
|
j++
|
|
} else {
|
|
result = append(result, primary[i])
|
|
i++
|
|
j++
|
|
}
|
|
}
|
|
for ; i < len(primary); i++ {
|
|
result = append(result, primary[i])
|
|
}
|
|
for ; j < len(secondary); j++ {
|
|
result = append(result, secondary[j])
|
|
}
|
|
return result
|
|
}
|
|
|
|
func respond(w http.ResponseWriter, data interface{}) {
|
|
w.Header().Set("Content-Type", "application/json")
|
|
w.WriteHeader(http.StatusOK)
|
|
|
|
b, err := json.Marshal(&response{
|
|
Status: statusSuccess,
|
|
Data: data,
|
|
})
|
|
if err != nil {
|
|
return
|
|
}
|
|
w.Write(b)
|
|
}
|
|
|
|
func respondError(w http.ResponseWriter, apiErr *apiError, data interface{}) {
|
|
w.Header().Set("Content-Type", "application/json")
|
|
|
|
var code int
|
|
switch apiErr.typ {
|
|
case errorBadData:
|
|
code = http.StatusBadRequest
|
|
case errorExec:
|
|
code = 422
|
|
case errorCanceled, errorTimeout:
|
|
code = http.StatusServiceUnavailable
|
|
case errorInternal:
|
|
code = http.StatusInternalServerError
|
|
default:
|
|
code = http.StatusInternalServerError
|
|
}
|
|
w.WriteHeader(code)
|
|
|
|
b, err := json.Marshal(&response{
|
|
Status: statusError,
|
|
ErrorType: apiErr.typ,
|
|
Error: apiErr.err.Error(),
|
|
Data: data,
|
|
})
|
|
if err != nil {
|
|
return
|
|
}
|
|
w.Write(b)
|
|
}
|
|
|
|
func parseTime(s string) (time.Time, error) {
|
|
if t, err := strconv.ParseFloat(s, 64); err == nil {
|
|
s, ns := math.Modf(t)
|
|
return time.Unix(int64(s), int64(ns*float64(time.Second))), nil
|
|
}
|
|
if t, err := time.Parse(time.RFC3339Nano, s); err == nil {
|
|
return t, nil
|
|
}
|
|
return time.Time{}, fmt.Errorf("cannot parse %q to a valid timestamp", s)
|
|
}
|
|
|
|
func parseDuration(s string) (time.Duration, error) {
|
|
if d, err := strconv.ParseFloat(s, 64); err == nil {
|
|
ts := d * float64(time.Second)
|
|
if ts > float64(math.MaxInt64) || ts < float64(math.MinInt64) {
|
|
return 0, fmt.Errorf("cannot parse %q to a valid duration. It overflows int64", s)
|
|
}
|
|
return time.Duration(ts), nil
|
|
}
|
|
if d, err := model.ParseDuration(s); err == nil {
|
|
return time.Duration(d), nil
|
|
}
|
|
return 0, fmt.Errorf("cannot parse %q to a valid duration", s)
|
|
}
|