mirror of
https://github.com/prometheus/prometheus.git
synced 2025-10-31 16:31:03 +01:00
1699 lines
50 KiB
Go
1699 lines
50 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"
|
|
"fmt"
|
|
"math"
|
|
"math/rand"
|
|
"net"
|
|
"net/http"
|
|
"net/url"
|
|
"os"
|
|
"path/filepath"
|
|
"regexp"
|
|
"sort"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
"unsafe"
|
|
|
|
"github.com/go-kit/log"
|
|
"github.com/go-kit/log/level"
|
|
jsoniter "github.com/json-iterator/go"
|
|
"github.com/pkg/errors"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/common/model"
|
|
"github.com/prometheus/common/route"
|
|
|
|
"github.com/prometheus/prometheus/config"
|
|
"github.com/prometheus/prometheus/model/exemplar"
|
|
"github.com/prometheus/prometheus/model/labels"
|
|
"github.com/prometheus/prometheus/model/textparse"
|
|
"github.com/prometheus/prometheus/model/timestamp"
|
|
"github.com/prometheus/prometheus/promql"
|
|
"github.com/prometheus/prometheus/promql/parser"
|
|
"github.com/prometheus/prometheus/rules"
|
|
"github.com/prometheus/prometheus/scrape"
|
|
"github.com/prometheus/prometheus/storage"
|
|
"github.com/prometheus/prometheus/storage/remote"
|
|
"github.com/prometheus/prometheus/tsdb"
|
|
"github.com/prometheus/prometheus/tsdb/index"
|
|
"github.com/prometheus/prometheus/util/httputil"
|
|
"github.com/prometheus/prometheus/util/stats"
|
|
)
|
|
|
|
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"
|
|
errorNotFound errorType = "not_found"
|
|
)
|
|
|
|
var LocalhostRepresentations = []string{"127.0.0.1", "localhost", "::1"}
|
|
|
|
type apiError struct {
|
|
typ errorType
|
|
err error
|
|
}
|
|
|
|
func (e *apiError) Error() string {
|
|
return fmt.Sprintf("%s: %s", e.typ, e.err)
|
|
}
|
|
|
|
// TargetRetriever provides the list of active/dropped targets to scrape or not.
|
|
type TargetRetriever interface {
|
|
TargetsActive() map[string][]*scrape.Target
|
|
TargetsDropped() map[string][]*scrape.Target
|
|
}
|
|
|
|
// AlertmanagerRetriever provides a list of all/dropped AlertManager URLs.
|
|
type AlertmanagerRetriever interface {
|
|
Alertmanagers() []*url.URL
|
|
DroppedAlertmanagers() []*url.URL
|
|
}
|
|
|
|
// RulesRetriever provides a list of active rules and alerts.
|
|
type RulesRetriever interface {
|
|
RuleGroups() []*rules.Group
|
|
AlertingRules() []*rules.AlertingRule
|
|
}
|
|
|
|
// PrometheusVersion contains build information about Prometheus.
|
|
type PrometheusVersion struct {
|
|
Version string `json:"version"`
|
|
Revision string `json:"revision"`
|
|
Branch string `json:"branch"`
|
|
BuildUser string `json:"buildUser"`
|
|
BuildDate string `json:"buildDate"`
|
|
GoVersion string `json:"goVersion"`
|
|
}
|
|
|
|
// RuntimeInfo contains runtime information about Prometheus.
|
|
type RuntimeInfo struct {
|
|
StartTime time.Time `json:"startTime"`
|
|
CWD string `json:"CWD"`
|
|
ReloadConfigSuccess bool `json:"reloadConfigSuccess"`
|
|
LastConfigTime time.Time `json:"lastConfigTime"`
|
|
CorruptionCount int64 `json:"corruptionCount"`
|
|
GoroutineCount int `json:"goroutineCount"`
|
|
GOMAXPROCS int `json:"GOMAXPROCS"`
|
|
GOGC string `json:"GOGC"`
|
|
GODEBUG string `json:"GODEBUG"`
|
|
StorageRetention string `json:"storageRetention"`
|
|
}
|
|
|
|
type response struct {
|
|
Status status `json:"status"`
|
|
Data interface{} `json:"data,omitempty"`
|
|
ErrorType errorType `json:"errorType,omitempty"`
|
|
Error string `json:"error,omitempty"`
|
|
Warnings []string `json:"warnings,omitempty"`
|
|
}
|
|
|
|
type apiFuncResult struct {
|
|
data interface{}
|
|
err *apiError
|
|
warnings storage.Warnings
|
|
finalizer func()
|
|
}
|
|
|
|
type apiFunc func(r *http.Request) apiFuncResult
|
|
|
|
// TSDBAdminStats defines the tsdb interfaces used by the v1 API for admin operations as well as statistics.
|
|
type TSDBAdminStats interface {
|
|
CleanTombstones() error
|
|
Delete(mint, maxt int64, ms ...*labels.Matcher) error
|
|
Snapshot(dir string, withHead bool) error
|
|
|
|
Stats(statsByLabelName string) (*tsdb.Stats, error)
|
|
WALReplayStatus() (tsdb.WALReplayStatus, error)
|
|
}
|
|
|
|
// 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.SampleAndChunkQueryable
|
|
QueryEngine *promql.Engine
|
|
ExemplarQueryable storage.ExemplarQueryable
|
|
|
|
targetRetriever func(context.Context) TargetRetriever
|
|
alertmanagerRetriever func(context.Context) AlertmanagerRetriever
|
|
rulesRetriever func(context.Context) RulesRetriever
|
|
now func() time.Time
|
|
config func() config.Config
|
|
flagsMap map[string]string
|
|
ready func(http.HandlerFunc) http.HandlerFunc
|
|
globalURLOptions GlobalURLOptions
|
|
|
|
db TSDBAdminStats
|
|
dbDir string
|
|
enableAdmin bool
|
|
logger log.Logger
|
|
CORSOrigin *regexp.Regexp
|
|
buildInfo *PrometheusVersion
|
|
runtimeInfo func() (RuntimeInfo, error)
|
|
gatherer prometheus.Gatherer
|
|
isAgent bool
|
|
|
|
remoteWriteHandler http.Handler
|
|
remoteReadHandler http.Handler
|
|
}
|
|
|
|
func init() {
|
|
jsoniter.RegisterTypeEncoderFunc("promql.Point", marshalPointJSON, marshalPointJSONIsEmpty)
|
|
jsoniter.RegisterTypeEncoderFunc("exemplar.Exemplar", marshalExemplarJSON, marshalExemplarJSONEmpty)
|
|
}
|
|
|
|
// NewAPI returns an initialized API type.
|
|
func NewAPI(
|
|
qe *promql.Engine,
|
|
q storage.SampleAndChunkQueryable,
|
|
ap storage.Appendable,
|
|
eq storage.ExemplarQueryable,
|
|
tr func(context.Context) TargetRetriever,
|
|
ar func(context.Context) AlertmanagerRetriever,
|
|
configFunc func() config.Config,
|
|
flagsMap map[string]string,
|
|
globalURLOptions GlobalURLOptions,
|
|
readyFunc func(http.HandlerFunc) http.HandlerFunc,
|
|
db TSDBAdminStats,
|
|
dbDir string,
|
|
enableAdmin bool,
|
|
logger log.Logger,
|
|
rr func(context.Context) RulesRetriever,
|
|
remoteReadSampleLimit int,
|
|
remoteReadConcurrencyLimit int,
|
|
remoteReadMaxBytesInFrame int,
|
|
isAgent bool,
|
|
CORSOrigin *regexp.Regexp,
|
|
runtimeInfo func() (RuntimeInfo, error),
|
|
buildInfo *PrometheusVersion,
|
|
gatherer prometheus.Gatherer,
|
|
registerer prometheus.Registerer,
|
|
) *API {
|
|
a := &API{
|
|
QueryEngine: qe,
|
|
Queryable: q,
|
|
ExemplarQueryable: eq,
|
|
|
|
targetRetriever: tr,
|
|
alertmanagerRetriever: ar,
|
|
|
|
now: time.Now,
|
|
config: configFunc,
|
|
flagsMap: flagsMap,
|
|
ready: readyFunc,
|
|
globalURLOptions: globalURLOptions,
|
|
db: db,
|
|
dbDir: dbDir,
|
|
enableAdmin: enableAdmin,
|
|
rulesRetriever: rr,
|
|
logger: logger,
|
|
CORSOrigin: CORSOrigin,
|
|
runtimeInfo: runtimeInfo,
|
|
buildInfo: buildInfo,
|
|
gatherer: gatherer,
|
|
isAgent: isAgent,
|
|
|
|
remoteReadHandler: remote.NewReadHandler(logger, registerer, q, configFunc, remoteReadSampleLimit, remoteReadConcurrencyLimit, remoteReadMaxBytesInFrame),
|
|
}
|
|
|
|
if ap != nil {
|
|
a.remoteWriteHandler = remote.NewWriteHandler(logger, ap)
|
|
}
|
|
|
|
return a
|
|
}
|
|
|
|
func setUnavailStatusOnTSDBNotReady(r apiFuncResult) apiFuncResult {
|
|
if r.err != nil && errors.Cause(r.err.err) == tsdb.ErrNotReady {
|
|
r.err.typ = errorUnavailable
|
|
}
|
|
return r
|
|
}
|
|
|
|
// Register the API's endpoints in the given router.
|
|
func (api *API) Register(r *route.Router) {
|
|
wrap := func(f apiFunc) http.HandlerFunc {
|
|
hf := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
httputil.SetCORS(w, api.CORSOrigin, r)
|
|
result := setUnavailStatusOnTSDBNotReady(f(r))
|
|
if result.finalizer != nil {
|
|
defer result.finalizer()
|
|
}
|
|
if result.err != nil {
|
|
api.respondError(w, result.err, result.data)
|
|
return
|
|
}
|
|
|
|
if result.data != nil {
|
|
api.respond(w, result.data, result.warnings)
|
|
return
|
|
}
|
|
w.WriteHeader(http.StatusNoContent)
|
|
})
|
|
return api.ready(httputil.CompressionHandler{
|
|
Handler: hf,
|
|
}.ServeHTTP)
|
|
}
|
|
|
|
wrapAgent := func(f apiFunc) http.HandlerFunc {
|
|
return wrap(func(r *http.Request) apiFuncResult {
|
|
if api.isAgent {
|
|
return apiFuncResult{nil, &apiError{errorExec, errors.New("unavailable with Prometheus Agent")}, nil, nil}
|
|
}
|
|
return f(r)
|
|
})
|
|
}
|
|
|
|
r.Options("/*path", wrap(api.options))
|
|
|
|
r.Get("/query", wrapAgent(api.query))
|
|
r.Post("/query", wrapAgent(api.query))
|
|
r.Get("/query_range", wrapAgent(api.queryRange))
|
|
r.Post("/query_range", wrapAgent(api.queryRange))
|
|
r.Get("/query_exemplars", wrapAgent(api.queryExemplars))
|
|
r.Post("/query_exemplars", wrapAgent(api.queryExemplars))
|
|
|
|
r.Get("/labels", wrapAgent(api.labelNames))
|
|
r.Post("/labels", wrapAgent(api.labelNames))
|
|
r.Get("/label/:name/values", wrapAgent(api.labelValues))
|
|
|
|
r.Get("/series", wrapAgent(api.series))
|
|
r.Post("/series", wrapAgent(api.series))
|
|
r.Del("/series", wrapAgent(api.dropSeries))
|
|
|
|
r.Get("/targets", wrap(api.targets))
|
|
r.Get("/targets/metadata", wrap(api.targetMetadata))
|
|
r.Get("/alertmanagers", wrapAgent(api.alertmanagers))
|
|
|
|
r.Get("/metadata", wrap(api.metricMetadata))
|
|
|
|
r.Get("/status/config", wrap(api.serveConfig))
|
|
r.Get("/status/runtimeinfo", wrap(api.serveRuntimeInfo))
|
|
r.Get("/status/buildinfo", wrap(api.serveBuildInfo))
|
|
r.Get("/status/flags", wrap(api.serveFlags))
|
|
r.Get("/status/tsdb", wrapAgent(api.serveTSDBStatus))
|
|
r.Get("/status/walreplay", api.serveWALReplayStatus)
|
|
r.Post("/read", api.ready(api.remoteRead))
|
|
r.Post("/write", api.ready(api.remoteWrite))
|
|
|
|
r.Get("/alerts", wrapAgent(api.alerts))
|
|
r.Get("/rules", wrapAgent(api.rules))
|
|
|
|
// Admin APIs
|
|
r.Post("/admin/tsdb/delete_series", wrapAgent(api.deleteSeries))
|
|
r.Post("/admin/tsdb/clean_tombstones", wrapAgent(api.cleanTombstones))
|
|
r.Post("/admin/tsdb/snapshot", wrapAgent(api.snapshot))
|
|
|
|
r.Put("/admin/tsdb/delete_series", wrapAgent(api.deleteSeries))
|
|
r.Put("/admin/tsdb/clean_tombstones", wrapAgent(api.cleanTombstones))
|
|
r.Put("/admin/tsdb/snapshot", wrapAgent(api.snapshot))
|
|
}
|
|
|
|
type queryData struct {
|
|
ResultType parser.ValueType `json:"resultType"`
|
|
Result parser.Value `json:"result"`
|
|
Stats *stats.QueryStats `json:"stats,omitempty"`
|
|
}
|
|
|
|
func invalidParamError(err error, parameter string) apiFuncResult {
|
|
return apiFuncResult{nil, &apiError{
|
|
errorBadData, errors.Wrapf(err, "invalid parameter %q", parameter),
|
|
}, nil, nil}
|
|
}
|
|
|
|
func (api *API) options(r *http.Request) apiFuncResult {
|
|
return apiFuncResult{nil, nil, nil, nil}
|
|
}
|
|
|
|
func (api *API) query(r *http.Request) (result apiFuncResult) {
|
|
ts, err := parseTimeParam(r, "time", api.now())
|
|
if err != nil {
|
|
return invalidParamError(err, "time")
|
|
}
|
|
ctx := r.Context()
|
|
if to := r.FormValue("timeout"); to != "" {
|
|
var cancel context.CancelFunc
|
|
timeout, err := parseDuration(to)
|
|
if err != nil {
|
|
return invalidParamError(err, "timeout")
|
|
}
|
|
|
|
ctx, cancel = context.WithTimeout(ctx, timeout)
|
|
defer cancel()
|
|
}
|
|
|
|
qry, err := api.QueryEngine.NewInstantQuery(api.Queryable, r.FormValue("query"), ts)
|
|
if err == promql.ErrValidationAtModifierDisabled {
|
|
err = errors.New("@ modifier is disabled, use --enable-feature=promql-at-modifier to enable it")
|
|
} else if err == promql.ErrValidationNegativeOffsetDisabled {
|
|
err = errors.New("negative offset is disabled, use --enable-feature=promql-negative-offset to enable it")
|
|
}
|
|
if err != nil {
|
|
return invalidParamError(err, "query")
|
|
}
|
|
|
|
// From now on, we must only return with a finalizer in the result (to
|
|
// be called by the caller) or call qry.Close ourselves (which is
|
|
// required in the case of a panic).
|
|
defer func() {
|
|
if result.finalizer == nil {
|
|
qry.Close()
|
|
}
|
|
}()
|
|
|
|
ctx = httputil.ContextFromRequest(ctx, r)
|
|
|
|
res := qry.Exec(ctx)
|
|
if res.Err != nil {
|
|
return apiFuncResult{nil, returnAPIError(res.Err), res.Warnings, qry.Close}
|
|
}
|
|
|
|
// 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 apiFuncResult{&queryData{
|
|
ResultType: res.Value.Type(),
|
|
Result: res.Value,
|
|
Stats: qs,
|
|
}, nil, res.Warnings, qry.Close}
|
|
}
|
|
|
|
func (api *API) queryRange(r *http.Request) (result apiFuncResult) {
|
|
start, err := parseTime(r.FormValue("start"))
|
|
if err != nil {
|
|
return invalidParamError(err, "start")
|
|
}
|
|
end, err := parseTime(r.FormValue("end"))
|
|
if err != nil {
|
|
return invalidParamError(err, "end")
|
|
}
|
|
if end.Before(start) {
|
|
return invalidParamError(errors.New("end timestamp must not be before start time"), "end")
|
|
}
|
|
|
|
step, err := parseDuration(r.FormValue("step"))
|
|
if err != nil {
|
|
return invalidParamError(err, "step")
|
|
}
|
|
|
|
if step <= 0 {
|
|
return invalidParamError(errors.New("zero or negative query resolution step widths are not accepted. Try a positive integer"), "step")
|
|
}
|
|
|
|
// 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 apiFuncResult{nil, &apiError{errorBadData, err}, nil, nil}
|
|
}
|
|
|
|
ctx := r.Context()
|
|
if to := r.FormValue("timeout"); to != "" {
|
|
var cancel context.CancelFunc
|
|
timeout, err := parseDuration(to)
|
|
if err != nil {
|
|
return invalidParamError(err, "timeout")
|
|
}
|
|
|
|
ctx, cancel = context.WithTimeout(ctx, timeout)
|
|
defer cancel()
|
|
}
|
|
|
|
qry, err := api.QueryEngine.NewRangeQuery(api.Queryable, r.FormValue("query"), start, end, step)
|
|
if err == promql.ErrValidationAtModifierDisabled {
|
|
err = errors.New("@ modifier is disabled, use --enable-feature=promql-at-modifier to enable it")
|
|
} else if err == promql.ErrValidationNegativeOffsetDisabled {
|
|
err = errors.New("negative offset is disabled, use --enable-feature=promql-negative-offset to enable it")
|
|
}
|
|
if err != nil {
|
|
return apiFuncResult{nil, &apiError{errorBadData, err}, nil, nil}
|
|
}
|
|
// From now on, we must only return with a finalizer in the result (to
|
|
// be called by the caller) or call qry.Close ourselves (which is
|
|
// required in the case of a panic).
|
|
defer func() {
|
|
if result.finalizer == nil {
|
|
qry.Close()
|
|
}
|
|
}()
|
|
|
|
ctx = httputil.ContextFromRequest(ctx, r)
|
|
|
|
res := qry.Exec(ctx)
|
|
if res.Err != nil {
|
|
return apiFuncResult{nil, returnAPIError(res.Err), res.Warnings, qry.Close}
|
|
}
|
|
|
|
// 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 apiFuncResult{&queryData{
|
|
ResultType: res.Value.Type(),
|
|
Result: res.Value,
|
|
Stats: qs,
|
|
}, nil, res.Warnings, qry.Close}
|
|
}
|
|
|
|
func (api *API) queryExemplars(r *http.Request) apiFuncResult {
|
|
start, err := parseTimeParam(r, "start", minTime)
|
|
if err != nil {
|
|
return invalidParamError(err, "start")
|
|
}
|
|
end, err := parseTimeParam(r, "end", maxTime)
|
|
if err != nil {
|
|
return invalidParamError(err, "end")
|
|
}
|
|
if end.Before(start) {
|
|
err := errors.New("end timestamp must not be before start timestamp")
|
|
return apiFuncResult{nil, &apiError{errorBadData, err}, nil, nil}
|
|
}
|
|
|
|
expr, err := parser.ParseExpr(r.FormValue("query"))
|
|
if err != nil {
|
|
return apiFuncResult{nil, &apiError{errorBadData, err}, nil, nil}
|
|
}
|
|
|
|
selectors := parser.ExtractSelectors(expr)
|
|
if len(selectors) < 1 {
|
|
return apiFuncResult{nil, nil, nil, nil}
|
|
}
|
|
|
|
ctx := r.Context()
|
|
eq, err := api.ExemplarQueryable.ExemplarQuerier(ctx)
|
|
if err != nil {
|
|
return apiFuncResult{nil, &apiError{errorExec, err}, nil, nil}
|
|
}
|
|
|
|
res, err := eq.Select(timestamp.FromTime(start), timestamp.FromTime(end), selectors...)
|
|
if err != nil {
|
|
return apiFuncResult{nil, &apiError{errorExec, err}, nil, nil}
|
|
}
|
|
|
|
return apiFuncResult{res, nil, nil, nil}
|
|
}
|
|
|
|
func returnAPIError(err error) *apiError {
|
|
if err == nil {
|
|
return nil
|
|
}
|
|
|
|
switch errors.Cause(err).(type) {
|
|
case promql.ErrQueryCanceled:
|
|
return &apiError{errorCanceled, err}
|
|
case promql.ErrQueryTimeout:
|
|
return &apiError{errorTimeout, err}
|
|
case promql.ErrStorage:
|
|
return &apiError{errorInternal, err}
|
|
}
|
|
|
|
return &apiError{errorExec, err}
|
|
}
|
|
|
|
func (api *API) labelNames(r *http.Request) apiFuncResult {
|
|
start, err := parseTimeParam(r, "start", minTime)
|
|
if err != nil {
|
|
return invalidParamError(err, "start")
|
|
}
|
|
end, err := parseTimeParam(r, "end", maxTime)
|
|
if err != nil {
|
|
return invalidParamError(err, "end")
|
|
}
|
|
|
|
matcherSets, err := parseMatchersParam(r.Form["match[]"])
|
|
if err != nil {
|
|
return apiFuncResult{nil, &apiError{errorBadData, err}, nil, nil}
|
|
}
|
|
|
|
q, err := api.Queryable.Querier(r.Context(), timestamp.FromTime(start), timestamp.FromTime(end))
|
|
if err != nil {
|
|
return apiFuncResult{nil, &apiError{errorExec, err}, nil, nil}
|
|
}
|
|
defer q.Close()
|
|
|
|
var (
|
|
names []string
|
|
warnings storage.Warnings
|
|
)
|
|
if len(matcherSets) > 0 {
|
|
labelNamesSet := make(map[string]struct{})
|
|
|
|
for _, matchers := range matcherSets {
|
|
vals, callWarnings, err := q.LabelNames(matchers...)
|
|
if err != nil {
|
|
return apiFuncResult{nil, &apiError{errorExec, err}, warnings, nil}
|
|
}
|
|
|
|
warnings = append(warnings, callWarnings...)
|
|
for _, val := range vals {
|
|
labelNamesSet[val] = struct{}{}
|
|
}
|
|
}
|
|
|
|
// Convert the map to an array.
|
|
names = make([]string, 0, len(labelNamesSet))
|
|
for key := range labelNamesSet {
|
|
names = append(names, key)
|
|
}
|
|
sort.Strings(names)
|
|
} else {
|
|
names, warnings, err = q.LabelNames()
|
|
if err != nil {
|
|
return apiFuncResult{nil, &apiError{errorExec, err}, warnings, nil}
|
|
}
|
|
}
|
|
|
|
if names == nil {
|
|
names = []string{}
|
|
}
|
|
return apiFuncResult{names, nil, warnings, nil}
|
|
}
|
|
|
|
func (api *API) labelValues(r *http.Request) (result apiFuncResult) {
|
|
ctx := r.Context()
|
|
name := route.Param(ctx, "name")
|
|
|
|
if !model.LabelNameRE.MatchString(name) {
|
|
return apiFuncResult{nil, &apiError{errorBadData, errors.Errorf("invalid label name: %q", name)}, nil, nil}
|
|
}
|
|
|
|
start, err := parseTimeParam(r, "start", minTime)
|
|
if err != nil {
|
|
return invalidParamError(err, "start")
|
|
}
|
|
end, err := parseTimeParam(r, "end", maxTime)
|
|
if err != nil {
|
|
return invalidParamError(err, "end")
|
|
}
|
|
|
|
matcherSets, err := parseMatchersParam(r.Form["match[]"])
|
|
if err != nil {
|
|
return apiFuncResult{nil, &apiError{errorBadData, err}, nil, nil}
|
|
}
|
|
|
|
q, err := api.Queryable.Querier(r.Context(), timestamp.FromTime(start), timestamp.FromTime(end))
|
|
if err != nil {
|
|
return apiFuncResult{nil, &apiError{errorExec, err}, nil, nil}
|
|
}
|
|
// From now on, we must only return with a finalizer in the result (to
|
|
// be called by the caller) or call q.Close ourselves (which is required
|
|
// in the case of a panic).
|
|
defer func() {
|
|
if result.finalizer == nil {
|
|
q.Close()
|
|
}
|
|
}()
|
|
closer := func() {
|
|
q.Close()
|
|
}
|
|
|
|
var (
|
|
vals []string
|
|
warnings storage.Warnings
|
|
)
|
|
if len(matcherSets) > 0 {
|
|
var callWarnings storage.Warnings
|
|
labelValuesSet := make(map[string]struct{})
|
|
for _, matchers := range matcherSets {
|
|
vals, callWarnings, err = q.LabelValues(name, matchers...)
|
|
if err != nil {
|
|
return apiFuncResult{nil, &apiError{errorExec, err}, warnings, closer}
|
|
}
|
|
warnings = append(warnings, callWarnings...)
|
|
for _, val := range vals {
|
|
labelValuesSet[val] = struct{}{}
|
|
}
|
|
}
|
|
|
|
vals = make([]string, 0, len(labelValuesSet))
|
|
for val := range labelValuesSet {
|
|
vals = append(vals, val)
|
|
}
|
|
} else {
|
|
vals, warnings, err = q.LabelValues(name)
|
|
if err != nil {
|
|
return apiFuncResult{nil, &apiError{errorExec, err}, warnings, closer}
|
|
}
|
|
|
|
if vals == nil {
|
|
vals = []string{}
|
|
}
|
|
}
|
|
|
|
sort.Strings(vals)
|
|
|
|
return apiFuncResult{vals, nil, warnings, closer}
|
|
}
|
|
|
|
var (
|
|
minTime = time.Unix(math.MinInt64/1000+62135596801, 0).UTC()
|
|
maxTime = time.Unix(math.MaxInt64/1000-62135596801, 999999999).UTC()
|
|
|
|
minTimeFormatted = minTime.Format(time.RFC3339Nano)
|
|
maxTimeFormatted = maxTime.Format(time.RFC3339Nano)
|
|
)
|
|
|
|
func (api *API) series(r *http.Request) (result apiFuncResult) {
|
|
if err := r.ParseForm(); err != nil {
|
|
return apiFuncResult{nil, &apiError{errorBadData, errors.Wrapf(err, "error parsing form values")}, nil, nil}
|
|
}
|
|
if len(r.Form["match[]"]) == 0 {
|
|
return apiFuncResult{nil, &apiError{errorBadData, errors.New("no match[] parameter provided")}, nil, nil}
|
|
}
|
|
|
|
start, err := parseTimeParam(r, "start", minTime)
|
|
if err != nil {
|
|
return invalidParamError(err, "start")
|
|
}
|
|
end, err := parseTimeParam(r, "end", maxTime)
|
|
if err != nil {
|
|
return invalidParamError(err, "end")
|
|
}
|
|
|
|
matcherSets, err := parseMatchersParam(r.Form["match[]"])
|
|
if err != nil {
|
|
return invalidParamError(err, "match[]")
|
|
}
|
|
|
|
q, err := api.Queryable.Querier(r.Context(), timestamp.FromTime(start), timestamp.FromTime(end))
|
|
if err != nil {
|
|
return apiFuncResult{nil, &apiError{errorExec, err}, nil, nil}
|
|
}
|
|
// From now on, we must only return with a finalizer in the result (to
|
|
// be called by the caller) or call q.Close ourselves (which is required
|
|
// in the case of a panic).
|
|
defer func() {
|
|
if result.finalizer == nil {
|
|
q.Close()
|
|
}
|
|
}()
|
|
closer := func() {
|
|
q.Close()
|
|
}
|
|
|
|
hints := &storage.SelectHints{
|
|
Start: timestamp.FromTime(start),
|
|
End: timestamp.FromTime(end),
|
|
Func: "series", // There is no series function, this token is used for lookups that don't need samples.
|
|
}
|
|
|
|
var sets []storage.SeriesSet
|
|
for _, mset := range matcherSets {
|
|
// We need to sort this select results to merge (deduplicate) the series sets later.
|
|
s := q.Select(true, hints, mset...)
|
|
sets = append(sets, s)
|
|
}
|
|
|
|
set := storage.NewMergeSeriesSet(sets, storage.ChainedSeriesMerge)
|
|
metrics := []labels.Labels{}
|
|
for set.Next() {
|
|
metrics = append(metrics, set.At().Labels())
|
|
}
|
|
|
|
warnings := set.Warnings()
|
|
if set.Err() != nil {
|
|
return apiFuncResult{nil, &apiError{errorExec, set.Err()}, warnings, closer}
|
|
}
|
|
|
|
return apiFuncResult{metrics, nil, warnings, closer}
|
|
}
|
|
|
|
func (api *API) dropSeries(_ *http.Request) apiFuncResult {
|
|
return apiFuncResult{nil, &apiError{errorInternal, errors.New("not implemented")}, nil, nil}
|
|
}
|
|
|
|
// 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"`
|
|
|
|
ScrapePool string `json:"scrapePool"`
|
|
ScrapeURL string `json:"scrapeUrl"`
|
|
GlobalURL string `json:"globalUrl"`
|
|
|
|
LastError string `json:"lastError"`
|
|
LastScrape time.Time `json:"lastScrape"`
|
|
LastScrapeDuration float64 `json:"lastScrapeDuration"`
|
|
Health scrape.TargetHealth `json:"health"`
|
|
|
|
ScrapeInterval string `json:"scrapeInterval"`
|
|
ScrapeTimeout string `json:"scrapeTimeout"`
|
|
}
|
|
|
|
// DroppedTarget has the information for one target that was dropped during relabelling.
|
|
type DroppedTarget struct {
|
|
// Labels before any processing.
|
|
DiscoveredLabels map[string]string `json:"discoveredLabels"`
|
|
}
|
|
|
|
// TargetDiscovery has all the active targets.
|
|
type TargetDiscovery struct {
|
|
ActiveTargets []*Target `json:"activeTargets"`
|
|
DroppedTargets []*DroppedTarget `json:"droppedTargets"`
|
|
}
|
|
|
|
// GlobalURLOptions contains fields used for deriving the global URL for local targets.
|
|
type GlobalURLOptions struct {
|
|
ListenAddress string
|
|
Host string
|
|
Scheme string
|
|
}
|
|
|
|
// sanitizeSplitHostPort acts like net.SplitHostPort.
|
|
// Additionally, if there is no port in the host passed as input, we return the
|
|
// original host, making sure that IPv6 addresses are not surrounded by square
|
|
// brackets.
|
|
func sanitizeSplitHostPort(input string) (string, string, error) {
|
|
host, port, err := net.SplitHostPort(input)
|
|
if err != nil && strings.HasSuffix(err.Error(), "missing port in address") {
|
|
var errWithPort error
|
|
host, _, errWithPort = net.SplitHostPort(input + ":80")
|
|
if errWithPort == nil {
|
|
err = nil
|
|
}
|
|
}
|
|
return host, port, err
|
|
}
|
|
|
|
func getGlobalURL(u *url.URL, opts GlobalURLOptions) (*url.URL, error) {
|
|
host, port, err := sanitizeSplitHostPort(u.Host)
|
|
if err != nil {
|
|
return u, err
|
|
}
|
|
|
|
for _, lhr := range LocalhostRepresentations {
|
|
if host == lhr {
|
|
_, ownPort, err := net.SplitHostPort(opts.ListenAddress)
|
|
if err != nil {
|
|
return u, err
|
|
}
|
|
|
|
if port == ownPort {
|
|
// Only in the case where the target is on localhost and its port is
|
|
// the same as the one we're listening on, we know for sure that
|
|
// we're monitoring our own process and that we need to change the
|
|
// scheme, hostname, and port to the externally reachable ones as
|
|
// well. We shouldn't need to touch the path at all, since if a
|
|
// path prefix is defined, the path under which we scrape ourselves
|
|
// should already contain the prefix.
|
|
u.Scheme = opts.Scheme
|
|
u.Host = opts.Host
|
|
} else {
|
|
// Otherwise, we only know that localhost is not reachable
|
|
// externally, so we replace only the hostname by the one in the
|
|
// external URL. It could be the wrong hostname for the service on
|
|
// this port, but it's still the best possible guess.
|
|
host, _, err := sanitizeSplitHostPort(opts.Host)
|
|
if err != nil {
|
|
return u, err
|
|
}
|
|
u.Host = host
|
|
if port != "" {
|
|
u.Host = net.JoinHostPort(u.Host, port)
|
|
}
|
|
}
|
|
break
|
|
}
|
|
}
|
|
|
|
return u, nil
|
|
}
|
|
|
|
func (api *API) targets(r *http.Request) apiFuncResult {
|
|
sortKeys := func(targets map[string][]*scrape.Target) ([]string, int) {
|
|
var n int
|
|
keys := make([]string, 0, len(targets))
|
|
for k := range targets {
|
|
keys = append(keys, k)
|
|
n += len(targets[k])
|
|
}
|
|
sort.Strings(keys)
|
|
return keys, n
|
|
}
|
|
|
|
flatten := func(targets map[string][]*scrape.Target) []*scrape.Target {
|
|
keys, n := sortKeys(targets)
|
|
res := make([]*scrape.Target, 0, n)
|
|
for _, k := range keys {
|
|
res = append(res, targets[k]...)
|
|
}
|
|
return res
|
|
}
|
|
|
|
state := strings.ToLower(r.URL.Query().Get("state"))
|
|
showActive := state == "" || state == "any" || state == "active"
|
|
showDropped := state == "" || state == "any" || state == "dropped"
|
|
res := &TargetDiscovery{}
|
|
|
|
if showActive {
|
|
targetsActive := api.targetRetriever(r.Context()).TargetsActive()
|
|
activeKeys, numTargets := sortKeys(targetsActive)
|
|
res.ActiveTargets = make([]*Target, 0, numTargets)
|
|
|
|
for _, key := range activeKeys {
|
|
for _, target := range targetsActive[key] {
|
|
lastErrStr := ""
|
|
lastErr := target.LastError()
|
|
if lastErr != nil {
|
|
lastErrStr = lastErr.Error()
|
|
}
|
|
|
|
globalURL, err := getGlobalURL(target.URL(), api.globalURLOptions)
|
|
|
|
res.ActiveTargets = append(res.ActiveTargets, &Target{
|
|
DiscoveredLabels: target.DiscoveredLabels().Map(),
|
|
Labels: target.Labels().Map(),
|
|
ScrapePool: key,
|
|
ScrapeURL: target.URL().String(),
|
|
GlobalURL: globalURL.String(),
|
|
LastError: func() string {
|
|
if err == nil && lastErrStr == "" {
|
|
return ""
|
|
} else if err != nil {
|
|
return errors.Wrapf(err, lastErrStr).Error()
|
|
}
|
|
return lastErrStr
|
|
}(),
|
|
LastScrape: target.LastScrape(),
|
|
LastScrapeDuration: target.LastScrapeDuration().Seconds(),
|
|
Health: target.Health(),
|
|
ScrapeInterval: target.GetValue(model.ScrapeIntervalLabel),
|
|
ScrapeTimeout: target.GetValue(model.ScrapeTimeoutLabel),
|
|
})
|
|
}
|
|
}
|
|
} else {
|
|
res.ActiveTargets = []*Target{}
|
|
}
|
|
if showDropped {
|
|
tDropped := flatten(api.targetRetriever(r.Context()).TargetsDropped())
|
|
res.DroppedTargets = make([]*DroppedTarget, 0, len(tDropped))
|
|
for _, t := range tDropped {
|
|
res.DroppedTargets = append(res.DroppedTargets, &DroppedTarget{
|
|
DiscoveredLabels: t.DiscoveredLabels().Map(),
|
|
})
|
|
}
|
|
} else {
|
|
res.DroppedTargets = []*DroppedTarget{}
|
|
}
|
|
return apiFuncResult{res, nil, nil, nil}
|
|
}
|
|
|
|
func matchLabels(lset labels.Labels, matchers []*labels.Matcher) bool {
|
|
for _, m := range matchers {
|
|
if !m.Matches(lset.Get(m.Name)) {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
func (api *API) targetMetadata(r *http.Request) apiFuncResult {
|
|
limit := -1
|
|
if s := r.FormValue("limit"); s != "" {
|
|
var err error
|
|
if limit, err = strconv.Atoi(s); err != nil {
|
|
return apiFuncResult{nil, &apiError{errorBadData, errors.New("limit must be a number")}, nil, nil}
|
|
}
|
|
}
|
|
|
|
matchTarget := r.FormValue("match_target")
|
|
var matchers []*labels.Matcher
|
|
var err error
|
|
if matchTarget != "" {
|
|
matchers, err = parser.ParseMetricSelector(matchTarget)
|
|
if err != nil {
|
|
return invalidParamError(err, "match_target")
|
|
}
|
|
}
|
|
|
|
metric := r.FormValue("metric")
|
|
res := []metricMetadata{}
|
|
for _, tt := range api.targetRetriever(r.Context()).TargetsActive() {
|
|
for _, t := range tt {
|
|
if limit >= 0 && len(res) >= limit {
|
|
break
|
|
}
|
|
// Filter targets that don't satisfy the label matchers.
|
|
if matchTarget != "" && !matchLabels(t.Labels(), matchers) {
|
|
continue
|
|
}
|
|
// If no metric is specified, get the full list for the target.
|
|
if metric == "" {
|
|
for _, md := range t.MetadataList() {
|
|
res = append(res, metricMetadata{
|
|
Target: t.Labels(),
|
|
Metric: md.Metric,
|
|
Type: md.Type,
|
|
Help: md.Help,
|
|
Unit: md.Unit,
|
|
})
|
|
}
|
|
continue
|
|
}
|
|
// Get metadata for the specified metric.
|
|
if md, ok := t.Metadata(metric); ok {
|
|
res = append(res, metricMetadata{
|
|
Target: t.Labels(),
|
|
Type: md.Type,
|
|
Help: md.Help,
|
|
Unit: md.Unit,
|
|
})
|
|
}
|
|
}
|
|
}
|
|
|
|
return apiFuncResult{res, nil, nil, nil}
|
|
}
|
|
|
|
type metricMetadata struct {
|
|
Target labels.Labels `json:"target"`
|
|
Metric string `json:"metric,omitempty"`
|
|
Type textparse.MetricType `json:"type"`
|
|
Help string `json:"help"`
|
|
Unit string `json:"unit"`
|
|
}
|
|
|
|
// 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) apiFuncResult {
|
|
urls := api.alertmanagerRetriever(r.Context()).Alertmanagers()
|
|
droppedURLS := api.alertmanagerRetriever(r.Context()).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 apiFuncResult{ams, nil, nil, nil}
|
|
}
|
|
|
|
// AlertDiscovery has info for all active alerts.
|
|
type AlertDiscovery struct {
|
|
Alerts []*Alert `json:"alerts"`
|
|
}
|
|
|
|
// Alert has info for an alert.
|
|
type Alert struct {
|
|
Labels labels.Labels `json:"labels"`
|
|
Annotations labels.Labels `json:"annotations"`
|
|
State string `json:"state"`
|
|
ActiveAt *time.Time `json:"activeAt,omitempty"`
|
|
Value string `json:"value"`
|
|
}
|
|
|
|
func (api *API) alerts(r *http.Request) apiFuncResult {
|
|
alertingRules := api.rulesRetriever(r.Context()).AlertingRules()
|
|
alerts := []*Alert{}
|
|
|
|
for _, alertingRule := range alertingRules {
|
|
alerts = append(
|
|
alerts,
|
|
rulesAlertsToAPIAlerts(alertingRule.ActiveAlerts())...,
|
|
)
|
|
}
|
|
|
|
res := &AlertDiscovery{Alerts: alerts}
|
|
|
|
return apiFuncResult{res, nil, nil, nil}
|
|
}
|
|
|
|
func rulesAlertsToAPIAlerts(rulesAlerts []*rules.Alert) []*Alert {
|
|
apiAlerts := make([]*Alert, len(rulesAlerts))
|
|
for i, ruleAlert := range rulesAlerts {
|
|
apiAlerts[i] = &Alert{
|
|
Labels: ruleAlert.Labels,
|
|
Annotations: ruleAlert.Annotations,
|
|
State: ruleAlert.State.String(),
|
|
ActiveAt: &ruleAlert.ActiveAt,
|
|
Value: strconv.FormatFloat(ruleAlert.Value, 'e', -1, 64),
|
|
}
|
|
}
|
|
|
|
return apiAlerts
|
|
}
|
|
|
|
type metadata struct {
|
|
Type textparse.MetricType `json:"type"`
|
|
Help string `json:"help"`
|
|
Unit string `json:"unit"`
|
|
}
|
|
|
|
func (api *API) metricMetadata(r *http.Request) apiFuncResult {
|
|
metrics := map[string]map[metadata]struct{}{}
|
|
|
|
limit := -1
|
|
if s := r.FormValue("limit"); s != "" {
|
|
var err error
|
|
if limit, err = strconv.Atoi(s); err != nil {
|
|
return apiFuncResult{nil, &apiError{errorBadData, errors.New("limit must be a number")}, nil, nil}
|
|
}
|
|
}
|
|
|
|
metric := r.FormValue("metric")
|
|
for _, tt := range api.targetRetriever(r.Context()).TargetsActive() {
|
|
for _, t := range tt {
|
|
|
|
if metric == "" {
|
|
for _, mm := range t.MetadataList() {
|
|
m := metadata{Type: mm.Type, Help: mm.Help, Unit: mm.Unit}
|
|
ms, ok := metrics[mm.Metric]
|
|
|
|
if !ok {
|
|
ms = map[metadata]struct{}{}
|
|
metrics[mm.Metric] = ms
|
|
}
|
|
ms[m] = struct{}{}
|
|
}
|
|
continue
|
|
}
|
|
|
|
if md, ok := t.Metadata(metric); ok {
|
|
m := metadata{Type: md.Type, Help: md.Help, Unit: md.Unit}
|
|
ms, ok := metrics[md.Metric]
|
|
|
|
if !ok {
|
|
ms = map[metadata]struct{}{}
|
|
metrics[md.Metric] = ms
|
|
}
|
|
ms[m] = struct{}{}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Put the elements from the pseudo-set into a slice for marshaling.
|
|
res := map[string][]metadata{}
|
|
for name, set := range metrics {
|
|
if limit >= 0 && len(res) >= limit {
|
|
break
|
|
}
|
|
|
|
s := []metadata{}
|
|
for metadata := range set {
|
|
s = append(s, metadata)
|
|
}
|
|
res[name] = s
|
|
}
|
|
|
|
return apiFuncResult{res, nil, nil, nil}
|
|
}
|
|
|
|
// RuleDiscovery has info for all rules
|
|
type RuleDiscovery struct {
|
|
RuleGroups []*RuleGroup `json:"groups"`
|
|
}
|
|
|
|
// RuleGroup has info for rules which are part of a group
|
|
type RuleGroup struct {
|
|
Name string `json:"name"`
|
|
File string `json:"file"`
|
|
// In order to preserve rule ordering, while exposing type (alerting or recording)
|
|
// specific properties, both alerting and recording rules are exposed in the
|
|
// same array.
|
|
Rules []Rule `json:"rules"`
|
|
Interval float64 `json:"interval"`
|
|
EvaluationTime float64 `json:"evaluationTime"`
|
|
LastEvaluation time.Time `json:"lastEvaluation"`
|
|
}
|
|
|
|
type Rule interface{}
|
|
|
|
type AlertingRule struct {
|
|
// State can be "pending", "firing", "inactive".
|
|
State string `json:"state"`
|
|
Name string `json:"name"`
|
|
Query string `json:"query"`
|
|
Duration float64 `json:"duration"`
|
|
Labels labels.Labels `json:"labels"`
|
|
Annotations labels.Labels `json:"annotations"`
|
|
Alerts []*Alert `json:"alerts"`
|
|
Health rules.RuleHealth `json:"health"`
|
|
LastError string `json:"lastError,omitempty"`
|
|
EvaluationTime float64 `json:"evaluationTime"`
|
|
LastEvaluation time.Time `json:"lastEvaluation"`
|
|
// Type of an alertingRule is always "alerting".
|
|
Type string `json:"type"`
|
|
}
|
|
|
|
type RecordingRule struct {
|
|
Name string `json:"name"`
|
|
Query string `json:"query"`
|
|
Labels labels.Labels `json:"labels,omitempty"`
|
|
Health rules.RuleHealth `json:"health"`
|
|
LastError string `json:"lastError,omitempty"`
|
|
EvaluationTime float64 `json:"evaluationTime"`
|
|
LastEvaluation time.Time `json:"lastEvaluation"`
|
|
// Type of a recordingRule is always "recording".
|
|
Type string `json:"type"`
|
|
}
|
|
|
|
func (api *API) rules(r *http.Request) apiFuncResult {
|
|
ruleGroups := api.rulesRetriever(r.Context()).RuleGroups()
|
|
res := &RuleDiscovery{RuleGroups: make([]*RuleGroup, len(ruleGroups))}
|
|
typ := strings.ToLower(r.URL.Query().Get("type"))
|
|
|
|
if typ != "" && typ != "alert" && typ != "record" {
|
|
return invalidParamError(errors.Errorf("not supported value %q", typ), "type")
|
|
}
|
|
|
|
returnAlerts := typ == "" || typ == "alert"
|
|
returnRecording := typ == "" || typ == "record"
|
|
|
|
for i, grp := range ruleGroups {
|
|
apiRuleGroup := &RuleGroup{
|
|
Name: grp.Name(),
|
|
File: grp.File(),
|
|
Interval: grp.Interval().Seconds(),
|
|
Rules: []Rule{},
|
|
EvaluationTime: grp.GetEvaluationTime().Seconds(),
|
|
LastEvaluation: grp.GetLastEvaluation(),
|
|
}
|
|
for _, r := range grp.Rules() {
|
|
var enrichedRule Rule
|
|
|
|
lastError := ""
|
|
if r.LastError() != nil {
|
|
lastError = r.LastError().Error()
|
|
}
|
|
switch rule := r.(type) {
|
|
case *rules.AlertingRule:
|
|
if !returnAlerts {
|
|
break
|
|
}
|
|
enrichedRule = AlertingRule{
|
|
State: rule.State().String(),
|
|
Name: rule.Name(),
|
|
Query: rule.Query().String(),
|
|
Duration: rule.HoldDuration().Seconds(),
|
|
Labels: rule.Labels(),
|
|
Annotations: rule.Annotations(),
|
|
Alerts: rulesAlertsToAPIAlerts(rule.ActiveAlerts()),
|
|
Health: rule.Health(),
|
|
LastError: lastError,
|
|
EvaluationTime: rule.GetEvaluationDuration().Seconds(),
|
|
LastEvaluation: rule.GetEvaluationTimestamp(),
|
|
Type: "alerting",
|
|
}
|
|
case *rules.RecordingRule:
|
|
if !returnRecording {
|
|
break
|
|
}
|
|
enrichedRule = RecordingRule{
|
|
Name: rule.Name(),
|
|
Query: rule.Query().String(),
|
|
Labels: rule.Labels(),
|
|
Health: rule.Health(),
|
|
LastError: lastError,
|
|
EvaluationTime: rule.GetEvaluationDuration().Seconds(),
|
|
LastEvaluation: rule.GetEvaluationTimestamp(),
|
|
Type: "recording",
|
|
}
|
|
default:
|
|
err := errors.Errorf("failed to assert type of rule '%v'", rule.Name())
|
|
return apiFuncResult{nil, &apiError{errorInternal, err}, nil, nil}
|
|
}
|
|
if enrichedRule != nil {
|
|
apiRuleGroup.Rules = append(apiRuleGroup.Rules, enrichedRule)
|
|
}
|
|
}
|
|
res.RuleGroups[i] = apiRuleGroup
|
|
}
|
|
return apiFuncResult{res, nil, nil, nil}
|
|
}
|
|
|
|
type prometheusConfig struct {
|
|
YAML string `json:"yaml"`
|
|
}
|
|
|
|
func (api *API) serveRuntimeInfo(_ *http.Request) apiFuncResult {
|
|
status, err := api.runtimeInfo()
|
|
if err != nil {
|
|
return apiFuncResult{status, &apiError{errorInternal, err}, nil, nil}
|
|
}
|
|
return apiFuncResult{status, nil, nil, nil}
|
|
}
|
|
|
|
func (api *API) serveBuildInfo(_ *http.Request) apiFuncResult {
|
|
return apiFuncResult{api.buildInfo, nil, nil, nil}
|
|
}
|
|
|
|
func (api *API) serveConfig(_ *http.Request) apiFuncResult {
|
|
cfg := &prometheusConfig{
|
|
YAML: api.config().String(),
|
|
}
|
|
return apiFuncResult{cfg, nil, nil, nil}
|
|
}
|
|
|
|
func (api *API) serveFlags(_ *http.Request) apiFuncResult {
|
|
return apiFuncResult{api.flagsMap, nil, nil, nil}
|
|
}
|
|
|
|
// stat holds the information about individual cardinality.
|
|
type stat struct {
|
|
Name string `json:"name"`
|
|
Value uint64 `json:"value"`
|
|
}
|
|
|
|
// HeadStats has information about the TSDB head.
|
|
type HeadStats struct {
|
|
NumSeries uint64 `json:"numSeries"`
|
|
NumLabelPairs int `json:"numLabelPairs"`
|
|
ChunkCount int64 `json:"chunkCount"`
|
|
MinTime int64 `json:"minTime"`
|
|
MaxTime int64 `json:"maxTime"`
|
|
}
|
|
|
|
// tsdbStatus has information of cardinality statistics from postings.
|
|
type tsdbStatus struct {
|
|
HeadStats HeadStats `json:"headStats"`
|
|
SeriesCountByMetricName []stat `json:"seriesCountByMetricName"`
|
|
LabelValueCountByLabelName []stat `json:"labelValueCountByLabelName"`
|
|
MemoryInBytesByLabelName []stat `json:"memoryInBytesByLabelName"`
|
|
SeriesCountByLabelValuePair []stat `json:"seriesCountByLabelValuePair"`
|
|
}
|
|
|
|
func convertStats(stats []index.Stat) []stat {
|
|
result := make([]stat, 0, len(stats))
|
|
for _, item := range stats {
|
|
item := stat{Name: item.Name, Value: item.Count}
|
|
result = append(result, item)
|
|
}
|
|
return result
|
|
}
|
|
|
|
func (api *API) serveTSDBStatus(*http.Request) apiFuncResult {
|
|
s, err := api.db.Stats("__name__")
|
|
if err != nil {
|
|
return apiFuncResult{nil, &apiError{errorInternal, err}, nil, nil}
|
|
}
|
|
metrics, err := api.gatherer.Gather()
|
|
if err != nil {
|
|
return apiFuncResult{nil, &apiError{errorInternal, fmt.Errorf("error gathering runtime status: %s", err)}, nil, nil}
|
|
}
|
|
chunkCount := int64(math.NaN())
|
|
for _, mF := range metrics {
|
|
if *mF.Name == "prometheus_tsdb_head_chunks" {
|
|
m := *mF.Metric[0]
|
|
if m.Gauge != nil {
|
|
chunkCount = int64(m.Gauge.GetValue())
|
|
break
|
|
}
|
|
}
|
|
}
|
|
return apiFuncResult{tsdbStatus{
|
|
HeadStats: HeadStats{
|
|
NumSeries: s.NumSeries,
|
|
ChunkCount: chunkCount,
|
|
MinTime: s.MinTime,
|
|
MaxTime: s.MaxTime,
|
|
NumLabelPairs: s.IndexPostingStats.NumLabelPairs,
|
|
},
|
|
SeriesCountByMetricName: convertStats(s.IndexPostingStats.CardinalityMetricsStats),
|
|
LabelValueCountByLabelName: convertStats(s.IndexPostingStats.CardinalityLabelStats),
|
|
MemoryInBytesByLabelName: convertStats(s.IndexPostingStats.LabelValueStats),
|
|
SeriesCountByLabelValuePair: convertStats(s.IndexPostingStats.LabelValuePairsStats),
|
|
}, nil, nil, nil}
|
|
}
|
|
|
|
type walReplayStatus struct {
|
|
Min int `json:"min"`
|
|
Max int `json:"max"`
|
|
Current int `json:"current"`
|
|
}
|
|
|
|
func (api *API) serveWALReplayStatus(w http.ResponseWriter, r *http.Request) {
|
|
httputil.SetCORS(w, api.CORSOrigin, r)
|
|
status, err := api.db.WALReplayStatus()
|
|
if err != nil {
|
|
api.respondError(w, &apiError{errorInternal, err}, nil)
|
|
}
|
|
api.respond(w, walReplayStatus{
|
|
Min: status.Min,
|
|
Max: status.Max,
|
|
Current: status.Current,
|
|
}, nil)
|
|
}
|
|
|
|
func (api *API) remoteRead(w http.ResponseWriter, r *http.Request) {
|
|
// This is only really for tests - this will never be nil IRL.
|
|
if api.remoteReadHandler != nil {
|
|
api.remoteReadHandler.ServeHTTP(w, r)
|
|
} else {
|
|
http.Error(w, "not found", http.StatusNotFound)
|
|
}
|
|
}
|
|
|
|
func (api *API) remoteWrite(w http.ResponseWriter, r *http.Request) {
|
|
if api.remoteWriteHandler != nil {
|
|
api.remoteWriteHandler.ServeHTTP(w, r)
|
|
} else {
|
|
http.Error(w, "remote write receiver needs to be enabled with --enable-feature=remote-write-receiver", http.StatusNotFound)
|
|
}
|
|
}
|
|
|
|
func (api *API) deleteSeries(r *http.Request) apiFuncResult {
|
|
if !api.enableAdmin {
|
|
return apiFuncResult{nil, &apiError{errorUnavailable, errors.New("admin APIs disabled")}, nil, nil}
|
|
}
|
|
if err := r.ParseForm(); err != nil {
|
|
return apiFuncResult{nil, &apiError{errorBadData, errors.Wrap(err, "error parsing form values")}, nil, nil}
|
|
}
|
|
if len(r.Form["match[]"]) == 0 {
|
|
return apiFuncResult{nil, &apiError{errorBadData, errors.New("no match[] parameter provided")}, nil, nil}
|
|
}
|
|
|
|
start, err := parseTimeParam(r, "start", minTime)
|
|
if err != nil {
|
|
return invalidParamError(err, "start")
|
|
}
|
|
end, err := parseTimeParam(r, "end", maxTime)
|
|
if err != nil {
|
|
return invalidParamError(err, "end")
|
|
}
|
|
|
|
for _, s := range r.Form["match[]"] {
|
|
matchers, err := parser.ParseMetricSelector(s)
|
|
if err != nil {
|
|
return invalidParamError(err, "match[]")
|
|
}
|
|
if err := api.db.Delete(timestamp.FromTime(start), timestamp.FromTime(end), matchers...); err != nil {
|
|
return apiFuncResult{nil, &apiError{errorInternal, err}, nil, nil}
|
|
}
|
|
}
|
|
|
|
return apiFuncResult{nil, nil, nil, nil}
|
|
}
|
|
|
|
func (api *API) snapshot(r *http.Request) apiFuncResult {
|
|
if !api.enableAdmin {
|
|
return apiFuncResult{nil, &apiError{errorUnavailable, errors.New("admin APIs disabled")}, nil, nil}
|
|
}
|
|
var (
|
|
skipHead bool
|
|
err error
|
|
)
|
|
if r.FormValue("skip_head") != "" {
|
|
skipHead, err = strconv.ParseBool(r.FormValue("skip_head"))
|
|
if err != nil {
|
|
return invalidParamError(errors.Wrapf(err, "unable to parse boolean"), "skip_head")
|
|
}
|
|
}
|
|
|
|
var (
|
|
snapdir = filepath.Join(api.dbDir, "snapshots")
|
|
name = fmt.Sprintf("%s-%016x",
|
|
time.Now().UTC().Format("20060102T150405Z0700"),
|
|
rand.Int63())
|
|
dir = filepath.Join(snapdir, name)
|
|
)
|
|
if err := os.MkdirAll(dir, 0o777); err != nil {
|
|
return apiFuncResult{nil, &apiError{errorInternal, errors.Wrap(err, "create snapshot directory")}, nil, nil}
|
|
}
|
|
if err := api.db.Snapshot(dir, !skipHead); err != nil {
|
|
return apiFuncResult{nil, &apiError{errorInternal, errors.Wrap(err, "create snapshot")}, nil, nil}
|
|
}
|
|
|
|
return apiFuncResult{struct {
|
|
Name string `json:"name"`
|
|
}{name}, nil, nil, nil}
|
|
}
|
|
|
|
func (api *API) cleanTombstones(r *http.Request) apiFuncResult {
|
|
if !api.enableAdmin {
|
|
return apiFuncResult{nil, &apiError{errorUnavailable, errors.New("admin APIs disabled")}, nil, nil}
|
|
}
|
|
if err := api.db.CleanTombstones(); err != nil {
|
|
return apiFuncResult{nil, &apiError{errorInternal, err}, nil, nil}
|
|
}
|
|
|
|
return apiFuncResult{nil, nil, nil, nil}
|
|
}
|
|
|
|
func (api *API) respond(w http.ResponseWriter, data interface{}, warnings storage.Warnings) {
|
|
statusMessage := statusSuccess
|
|
var warningStrings []string
|
|
for _, warning := range warnings {
|
|
warningStrings = append(warningStrings, warning.Error())
|
|
}
|
|
json := jsoniter.ConfigCompatibleWithStandardLibrary
|
|
b, err := json.Marshal(&response{
|
|
Status: statusMessage,
|
|
Data: data,
|
|
Warnings: warningStrings,
|
|
})
|
|
if err != nil {
|
|
level.Error(api.logger).Log("msg", "error marshaling json response", "err", err)
|
|
http.Error(w, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
w.Header().Set("Content-Type", "application/json")
|
|
w.WriteHeader(http.StatusOK)
|
|
if n, err := w.Write(b); err != nil {
|
|
level.Error(api.logger).Log("msg", "error writing response", "bytesWritten", n, "err", err)
|
|
}
|
|
}
|
|
|
|
func (api *API) respondError(w http.ResponseWriter, apiErr *apiError, data interface{}) {
|
|
json := jsoniter.ConfigCompatibleWithStandardLibrary
|
|
b, err := json.Marshal(&response{
|
|
Status: statusError,
|
|
ErrorType: apiErr.typ,
|
|
Error: apiErr.err.Error(),
|
|
Data: data,
|
|
})
|
|
if err != nil {
|
|
level.Error(api.logger).Log("msg", "error marshaling json response", "err", err)
|
|
http.Error(w, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
var code int
|
|
switch apiErr.typ {
|
|
case errorBadData:
|
|
code = http.StatusBadRequest
|
|
case errorExec:
|
|
code = http.StatusUnprocessableEntity
|
|
case errorCanceled, errorTimeout:
|
|
code = http.StatusServiceUnavailable
|
|
case errorInternal:
|
|
code = http.StatusInternalServerError
|
|
case errorNotFound:
|
|
code = http.StatusNotFound
|
|
default:
|
|
code = http.StatusInternalServerError
|
|
}
|
|
|
|
w.Header().Set("Content-Type", "application/json")
|
|
w.WriteHeader(code)
|
|
if n, err := w.Write(b); err != nil {
|
|
level.Error(api.logger).Log("msg", "error writing response", "bytesWritten", n, "err", err)
|
|
}
|
|
}
|
|
|
|
func parseTimeParam(r *http.Request, paramName string, defaultValue time.Time) (time.Time, error) {
|
|
val := r.FormValue(paramName)
|
|
if val == "" {
|
|
return defaultValue, nil
|
|
}
|
|
result, err := parseTime(val)
|
|
if err != nil {
|
|
return time.Time{}, errors.Wrapf(err, "Invalid time value for '%s'", paramName)
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func parseTime(s string) (time.Time, error) {
|
|
if t, err := strconv.ParseFloat(s, 64); err == nil {
|
|
s, ns := math.Modf(t)
|
|
ns = math.Round(ns*1000) / 1000
|
|
return time.Unix(int64(s), int64(ns*float64(time.Second))).UTC(), nil
|
|
}
|
|
if t, err := time.Parse(time.RFC3339Nano, s); err == nil {
|
|
return t, nil
|
|
}
|
|
|
|
// Stdlib's time parser can only handle 4 digit years. As a workaround until
|
|
// that is fixed we want to at least support our own boundary times.
|
|
// Context: https://github.com/prometheus/client_golang/issues/614
|
|
// Upstream issue: https://github.com/golang/go/issues/20555
|
|
switch s {
|
|
case minTimeFormatted:
|
|
return minTime, nil
|
|
case maxTimeFormatted:
|
|
return maxTime, nil
|
|
}
|
|
return time.Time{}, errors.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, errors.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, errors.Errorf("cannot parse %q to a valid duration", s)
|
|
}
|
|
|
|
func parseMatchersParam(matchers []string) ([][]*labels.Matcher, error) {
|
|
var matcherSets [][]*labels.Matcher
|
|
for _, s := range matchers {
|
|
matchers, err := parser.ParseMetricSelector(s)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
matcherSets = append(matcherSets, matchers)
|
|
}
|
|
|
|
OUTER:
|
|
for _, ms := range matcherSets {
|
|
for _, lm := range ms {
|
|
if lm != nil && !lm.Matches("") {
|
|
continue OUTER
|
|
}
|
|
}
|
|
return nil, errors.New("match[] must contain at least one non-empty matcher")
|
|
}
|
|
return matcherSets, nil
|
|
}
|
|
|
|
// marshalPointJSON writes `[ts, "val"]`.
|
|
func marshalPointJSON(ptr unsafe.Pointer, stream *jsoniter.Stream) {
|
|
p := *((*promql.Point)(ptr))
|
|
stream.WriteArrayStart()
|
|
marshalTimestamp(p.T, stream)
|
|
stream.WriteMore()
|
|
marshalValue(p.V, stream)
|
|
stream.WriteArrayEnd()
|
|
}
|
|
|
|
func marshalPointJSONIsEmpty(ptr unsafe.Pointer) bool {
|
|
return false
|
|
}
|
|
|
|
// marshalExemplarJSON writes.
|
|
// {
|
|
// labels: <labels>,
|
|
// value: "<string>",
|
|
// timestamp: <float>
|
|
// }
|
|
func marshalExemplarJSON(ptr unsafe.Pointer, stream *jsoniter.Stream) {
|
|
p := *((*exemplar.Exemplar)(ptr))
|
|
stream.WriteObjectStart()
|
|
|
|
// "labels" key.
|
|
stream.WriteObjectField(`labels`)
|
|
lbls, err := p.Labels.MarshalJSON()
|
|
if err != nil {
|
|
stream.Error = err
|
|
return
|
|
}
|
|
stream.SetBuffer(append(stream.Buffer(), lbls...))
|
|
|
|
// "value" key.
|
|
stream.WriteMore()
|
|
stream.WriteObjectField(`value`)
|
|
marshalValue(p.Value, stream)
|
|
|
|
// "timestamp" key.
|
|
stream.WriteMore()
|
|
stream.WriteObjectField(`timestamp`)
|
|
marshalTimestamp(p.Ts, stream)
|
|
// marshalTimestamp(p.Ts, stream)
|
|
|
|
stream.WriteObjectEnd()
|
|
}
|
|
|
|
func marshalExemplarJSONEmpty(ptr unsafe.Pointer) bool {
|
|
return false
|
|
}
|
|
|
|
func marshalTimestamp(t int64, stream *jsoniter.Stream) {
|
|
// Write out the timestamp as a float divided by 1000.
|
|
// This is ~3x faster than converting to a float.
|
|
if t < 0 {
|
|
stream.WriteRaw(`-`)
|
|
t = -t
|
|
}
|
|
stream.WriteInt64(t / 1000)
|
|
fraction := t % 1000
|
|
if fraction != 0 {
|
|
stream.WriteRaw(`.`)
|
|
if fraction < 100 {
|
|
stream.WriteRaw(`0`)
|
|
}
|
|
if fraction < 10 {
|
|
stream.WriteRaw(`0`)
|
|
}
|
|
stream.WriteInt64(fraction)
|
|
}
|
|
}
|
|
|
|
func marshalValue(v float64, stream *jsoniter.Stream) {
|
|
stream.WriteRaw(`"`)
|
|
// Taken from https://github.com/json-iterator/go/blob/master/stream_float.go#L71 as a workaround
|
|
// to https://github.com/json-iterator/go/issues/365 (jsoniter, to follow json standard, doesn't allow inf/nan).
|
|
buf := stream.Buffer()
|
|
abs := math.Abs(v)
|
|
fmt := byte('f')
|
|
// Note: Must use float32 comparisons for underlying float32 value to get precise cutoffs right.
|
|
if abs != 0 {
|
|
if abs < 1e-6 || abs >= 1e21 {
|
|
fmt = 'e'
|
|
}
|
|
}
|
|
buf = strconv.AppendFloat(buf, v, fmt, -1, 64)
|
|
stream.SetBuffer(buf)
|
|
stream.WriteRaw(`"`)
|
|
}
|