mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-19 15:06:25 +01:00
1f105dde98
Examples: 1) -metricsAuthKey=file:///abs/path/to/file - reads flag value from the given absolute filepath 2) -metricsAuthKey=file://./relative/path/to/file - reads flag value from the given relative filepath 3) -metricsAuthKey=http://some-host/some/path?query_arg=abc - reads flag value from the given url The flag value is automatically updated when the file contents changes.
720 lines
27 KiB
Go
720 lines
27 KiB
Go
package vmselect
|
|
|
|
import (
|
|
"embed"
|
|
"errors"
|
|
"flag"
|
|
"fmt"
|
|
"net/http"
|
|
"net/http/httputil"
|
|
"net/url"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmselect/graphite"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmselect/netstorage"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmselect/prometheus"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmselect/promql"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmselect/searchutils"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmstorage"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/cgroup"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/flagutil"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/fs"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/httputils"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/promscrape"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/querytracer"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/timerpool"
|
|
"github.com/VictoriaMetrics/metrics"
|
|
)
|
|
|
|
var (
|
|
deleteAuthKey = flagutil.NewPassword("deleteAuthKey", "authKey for metrics' deletion via /api/v1/admin/tsdb/delete_series and /tags/delSeries")
|
|
maxConcurrentRequests = flag.Int("search.maxConcurrentRequests", getDefaultMaxConcurrentRequests(), "The maximum number of concurrent search requests. "+
|
|
"It shouldn't be high, since a single request can saturate all the CPU cores, while many concurrently executed requests may require high amounts of memory. "+
|
|
"See also -search.maxQueueDuration and -search.maxMemoryPerQuery")
|
|
maxQueueDuration = flag.Duration("search.maxQueueDuration", 10*time.Second, "The maximum time the request waits for execution when -search.maxConcurrentRequests "+
|
|
"limit is reached; see also -search.maxQueryDuration")
|
|
resetCacheAuthKey = flagutil.NewPassword("search.resetCacheAuthKey", "Optional authKey for resetting rollup cache via /internal/resetRollupResultCache call")
|
|
logSlowQueryDuration = flag.Duration("search.logSlowQueryDuration", 5*time.Second, "Log queries with execution time exceeding this value. Zero disables slow query logging. "+
|
|
"See also -search.logQueryMemoryUsage")
|
|
vmalertProxyURL = flag.String("vmalert.proxyURL", "", "Optional URL for proxying requests to vmalert. For example, if -vmalert.proxyURL=http://vmalert:8880 , then alerting API requests such as /api/v1/rules from Grafana will be proxied to http://vmalert:8880/api/v1/rules")
|
|
)
|
|
|
|
var slowQueries = metrics.NewCounter(`vm_slow_queries_total`)
|
|
|
|
func getDefaultMaxConcurrentRequests() int {
|
|
n := cgroup.AvailableCPUs()
|
|
if n <= 4 {
|
|
n *= 2
|
|
}
|
|
if n > 16 {
|
|
// A single request can saturate all the CPU cores, so there is no sense
|
|
// in allowing higher number of concurrent requests - they will just contend
|
|
// for unavailable CPU time.
|
|
n = 16
|
|
}
|
|
return n
|
|
}
|
|
|
|
// Init initializes vmselect
|
|
func Init() {
|
|
tmpDirPath := *vmstorage.DataPath + "/tmp"
|
|
fs.RemoveDirContents(tmpDirPath)
|
|
netstorage.InitTmpBlocksDir(tmpDirPath)
|
|
promql.InitRollupResultCache(*vmstorage.DataPath + "/cache/rollupResult")
|
|
|
|
concurrencyLimitCh = make(chan struct{}, *maxConcurrentRequests)
|
|
initVMAlertProxy()
|
|
}
|
|
|
|
// Stop stops vmselect
|
|
func Stop() {
|
|
promql.StopRollupResultCache()
|
|
}
|
|
|
|
var concurrencyLimitCh chan struct{}
|
|
|
|
var (
|
|
concurrencyLimitReached = metrics.NewCounter(`vm_concurrent_select_limit_reached_total`)
|
|
concurrencyLimitTimeout = metrics.NewCounter(`vm_concurrent_select_limit_timeout_total`)
|
|
|
|
_ = metrics.NewGauge(`vm_concurrent_select_capacity`, func() float64 {
|
|
return float64(cap(concurrencyLimitCh))
|
|
})
|
|
_ = metrics.NewGauge(`vm_concurrent_select_current`, func() float64 {
|
|
return float64(len(concurrencyLimitCh))
|
|
})
|
|
)
|
|
|
|
//go:embed vmui
|
|
var vmuiFiles embed.FS
|
|
|
|
var vmuiFileServer = http.FileServer(http.FS(vmuiFiles))
|
|
|
|
// RequestHandler handles remote read API requests
|
|
func RequestHandler(w http.ResponseWriter, r *http.Request) bool {
|
|
path := strings.Replace(r.URL.Path, "//", "/", -1)
|
|
|
|
// Strip /prometheus and /graphite prefixes in order to provide path compatibility with cluster version
|
|
//
|
|
// See https://docs.victoriametrics.com/Cluster-VictoriaMetrics.html#url-format
|
|
switch {
|
|
case strings.HasPrefix(path, "/prometheus/"):
|
|
path = path[len("/prometheus"):]
|
|
case strings.HasPrefix(path, "/graphite/"):
|
|
path = path[len("/graphite"):]
|
|
}
|
|
|
|
if handleStaticAndSimpleRequests(w, r, path) {
|
|
return true
|
|
}
|
|
|
|
// Handle non-trivial dynamic requests, which may take big amounts of time and resources.
|
|
startTime := time.Now()
|
|
defer requestDuration.UpdateDuration(startTime)
|
|
tracerEnabled := httputils.GetBool(r, "trace")
|
|
qt := querytracer.New(tracerEnabled, r.URL.Path)
|
|
|
|
// Limit the number of concurrent queries.
|
|
select {
|
|
case concurrencyLimitCh <- struct{}{}:
|
|
defer func() { <-concurrencyLimitCh }()
|
|
default:
|
|
// Sleep for a while until giving up. This should resolve short bursts in requests.
|
|
concurrencyLimitReached.Inc()
|
|
d := searchutils.GetMaxQueryDuration(r)
|
|
if d > *maxQueueDuration {
|
|
d = *maxQueueDuration
|
|
}
|
|
t := timerpool.Get(d)
|
|
select {
|
|
case concurrencyLimitCh <- struct{}{}:
|
|
timerpool.Put(t)
|
|
qt.Printf("wait in queue because -search.maxConcurrentRequests=%d concurrent requests are executed", *maxConcurrentRequests)
|
|
defer func() { <-concurrencyLimitCh }()
|
|
case <-r.Context().Done():
|
|
timerpool.Put(t)
|
|
remoteAddr := httpserver.GetQuotedRemoteAddr(r)
|
|
requestURI := httpserver.GetRequestURI(r)
|
|
logger.Infof("client has cancelled the request after %.3f seconds: remoteAddr=%s, requestURI: %q",
|
|
time.Since(startTime).Seconds(), remoteAddr, requestURI)
|
|
return true
|
|
case <-t.C:
|
|
timerpool.Put(t)
|
|
concurrencyLimitTimeout.Inc()
|
|
err := &httpserver.ErrorWithStatusCode{
|
|
Err: fmt.Errorf("couldn't start executing the request in %.3f seconds, since -search.maxConcurrentRequests=%d concurrent requests "+
|
|
"are executed. Possible solutions: to reduce query load; to add more compute resources to the server; "+
|
|
"to increase -search.maxQueueDuration=%s; to increase -search.maxQueryDuration; to increase -search.maxConcurrentRequests",
|
|
d.Seconds(), *maxConcurrentRequests, maxQueueDuration),
|
|
StatusCode: http.StatusServiceUnavailable,
|
|
}
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
}
|
|
|
|
if *logSlowQueryDuration > 0 {
|
|
actualStartTime := time.Now()
|
|
defer func() {
|
|
d := time.Since(actualStartTime)
|
|
if d >= *logSlowQueryDuration {
|
|
remoteAddr := httpserver.GetQuotedRemoteAddr(r)
|
|
requestURI := httpserver.GetRequestURI(r)
|
|
logger.Warnf("slow query according to -search.logSlowQueryDuration=%s: remoteAddr=%s, duration=%.3f seconds; requestURI: %q",
|
|
*logSlowQueryDuration, remoteAddr, d.Seconds(), requestURI)
|
|
slowQueries.Inc()
|
|
}
|
|
}()
|
|
}
|
|
|
|
if path == "/internal/resetRollupResultCache" {
|
|
if !httpserver.CheckAuthFlag(w, r, resetCacheAuthKey.Get(), "resetCacheAuthKey") {
|
|
return true
|
|
}
|
|
promql.ResetRollupResultCache()
|
|
return true
|
|
}
|
|
|
|
if strings.HasPrefix(path, "/api/v1/label/") {
|
|
s := path[len("/api/v1/label/"):]
|
|
if strings.HasSuffix(s, "/values") {
|
|
labelValuesRequests.Inc()
|
|
labelName := s[:len(s)-len("/values")]
|
|
httpserver.EnableCORS(w, r)
|
|
if err := prometheus.LabelValuesHandler(qt, startTime, labelName, w, r); err != nil {
|
|
labelValuesErrors.Inc()
|
|
sendPrometheusError(w, r, err)
|
|
return true
|
|
}
|
|
return true
|
|
}
|
|
}
|
|
if strings.HasPrefix(path, "/tags/") && !isGraphiteTagsPath(path) {
|
|
tagName := path[len("/tags/"):]
|
|
graphiteTagValuesRequests.Inc()
|
|
if err := graphite.TagValuesHandler(startTime, tagName, w, r); err != nil {
|
|
graphiteTagValuesErrors.Inc()
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
return true
|
|
}
|
|
|
|
switch path {
|
|
case "/api/v1/query":
|
|
queryRequests.Inc()
|
|
httpserver.EnableCORS(w, r)
|
|
if err := prometheus.QueryHandler(qt, startTime, w, r); err != nil {
|
|
queryErrors.Inc()
|
|
sendPrometheusError(w, r, err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/api/v1/query_range":
|
|
queryRangeRequests.Inc()
|
|
httpserver.EnableCORS(w, r)
|
|
if err := prometheus.QueryRangeHandler(qt, startTime, w, r); err != nil {
|
|
queryRangeErrors.Inc()
|
|
sendPrometheusError(w, r, err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/api/v1/series":
|
|
seriesRequests.Inc()
|
|
httpserver.EnableCORS(w, r)
|
|
if err := prometheus.SeriesHandler(qt, startTime, w, r); err != nil {
|
|
seriesErrors.Inc()
|
|
sendPrometheusError(w, r, err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/api/v1/series/count":
|
|
seriesCountRequests.Inc()
|
|
httpserver.EnableCORS(w, r)
|
|
if err := prometheus.SeriesCountHandler(startTime, w, r); err != nil {
|
|
seriesCountErrors.Inc()
|
|
sendPrometheusError(w, r, err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/api/v1/labels":
|
|
labelsRequests.Inc()
|
|
httpserver.EnableCORS(w, r)
|
|
if err := prometheus.LabelsHandler(qt, startTime, w, r); err != nil {
|
|
labelsErrors.Inc()
|
|
sendPrometheusError(w, r, err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/api/v1/status/tsdb":
|
|
statusTSDBRequests.Inc()
|
|
httpserver.EnableCORS(w, r)
|
|
if err := prometheus.TSDBStatusHandler(qt, startTime, w, r); err != nil {
|
|
statusTSDBErrors.Inc()
|
|
sendPrometheusError(w, r, err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/api/v1/export":
|
|
exportRequests.Inc()
|
|
if err := prometheus.ExportHandler(startTime, w, r); err != nil {
|
|
exportErrors.Inc()
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/api/v1/export/csv":
|
|
exportCSVRequests.Inc()
|
|
if err := prometheus.ExportCSVHandler(startTime, w, r); err != nil {
|
|
exportCSVErrors.Inc()
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/api/v1/export/native":
|
|
exportNativeRequests.Inc()
|
|
if err := prometheus.ExportNativeHandler(startTime, w, r); err != nil {
|
|
exportNativeErrors.Inc()
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/federate":
|
|
federateRequests.Inc()
|
|
if err := prometheus.FederateHandler(startTime, w, r); err != nil {
|
|
federateErrors.Inc()
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/metrics/find", "/metrics/find/":
|
|
graphiteMetricsFindRequests.Inc()
|
|
httpserver.EnableCORS(w, r)
|
|
if err := graphite.MetricsFindHandler(startTime, w, r); err != nil {
|
|
graphiteMetricsFindErrors.Inc()
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/metrics/expand", "/metrics/expand/":
|
|
graphiteMetricsExpandRequests.Inc()
|
|
httpserver.EnableCORS(w, r)
|
|
if err := graphite.MetricsExpandHandler(startTime, w, r); err != nil {
|
|
graphiteMetricsExpandErrors.Inc()
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/metrics/index.json", "/metrics/index.json/":
|
|
graphiteMetricsIndexRequests.Inc()
|
|
httpserver.EnableCORS(w, r)
|
|
if err := graphite.MetricsIndexHandler(startTime, w, r); err != nil {
|
|
graphiteMetricsIndexErrors.Inc()
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/tags/tagSeries":
|
|
graphiteTagsTagSeriesRequests.Inc()
|
|
if err := graphite.TagsTagSeriesHandler(startTime, w, r); err != nil {
|
|
graphiteTagsTagSeriesErrors.Inc()
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/tags/tagMultiSeries":
|
|
graphiteTagsTagMultiSeriesRequests.Inc()
|
|
if err := graphite.TagsTagMultiSeriesHandler(startTime, w, r); err != nil {
|
|
graphiteTagsTagMultiSeriesErrors.Inc()
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/tags":
|
|
graphiteTagsRequests.Inc()
|
|
if err := graphite.TagsHandler(startTime, w, r); err != nil {
|
|
graphiteTagsErrors.Inc()
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/tags/findSeries":
|
|
graphiteTagsFindSeriesRequests.Inc()
|
|
if err := graphite.TagsFindSeriesHandler(startTime, w, r); err != nil {
|
|
graphiteTagsFindSeriesErrors.Inc()
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/tags/autoComplete/tags":
|
|
graphiteTagsAutoCompleteTagsRequests.Inc()
|
|
httpserver.EnableCORS(w, r)
|
|
if err := graphite.TagsAutoCompleteTagsHandler(startTime, w, r); err != nil {
|
|
graphiteTagsAutoCompleteTagsErrors.Inc()
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/tags/autoComplete/values":
|
|
graphiteTagsAutoCompleteValuesRequests.Inc()
|
|
httpserver.EnableCORS(w, r)
|
|
if err := graphite.TagsAutoCompleteValuesHandler(startTime, w, r); err != nil {
|
|
graphiteTagsAutoCompleteValuesErrors.Inc()
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/tags/delSeries":
|
|
if !httpserver.CheckAuthFlag(w, r, deleteAuthKey.Get(), "deleteAuthKey") {
|
|
return true
|
|
}
|
|
graphiteTagsDelSeriesRequests.Inc()
|
|
if err := graphite.TagsDelSeriesHandler(startTime, w, r); err != nil {
|
|
graphiteTagsDelSeriesErrors.Inc()
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/render":
|
|
graphiteRenderRequests.Inc()
|
|
if err := graphite.RenderHandler(startTime, w, r); err != nil {
|
|
graphiteRenderErrors.Inc()
|
|
httpserver.Errorf(w, r, "error in %q: %s", r.URL.Path, err)
|
|
return true
|
|
}
|
|
return true
|
|
case "/api/v1/admin/tsdb/delete_series":
|
|
if !httpserver.CheckAuthFlag(w, r, deleteAuthKey.Get(), "deleteAuthKey") {
|
|
return true
|
|
}
|
|
deleteRequests.Inc()
|
|
if err := prometheus.DeleteHandler(startTime, r); err != nil {
|
|
deleteErrors.Inc()
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
w.WriteHeader(http.StatusNoContent)
|
|
return true
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
func handleStaticAndSimpleRequests(w http.ResponseWriter, r *http.Request, path string) bool {
|
|
// vmui access.
|
|
if path == "/vmui" || path == "/graph" {
|
|
// VMUI access via incomplete url without `/` in the end. Redirect to complete url.
|
|
// Use relative redirect, since the hostname and path prefix may be incorrect if VictoriaMetrics
|
|
// is hidden behind vmauth or similar proxy.
|
|
_ = r.ParseForm()
|
|
path = strings.TrimPrefix(path, "/")
|
|
newURL := path + "/?" + r.Form.Encode()
|
|
httpserver.Redirect(w, newURL)
|
|
return true
|
|
}
|
|
if strings.HasPrefix(path, "/graph/") {
|
|
// This is needed for serving /graph URLs from Prometheus datasource in Grafana.
|
|
path = strings.Replace(path, "/graph/", "/vmui/", 1)
|
|
}
|
|
if path == "/vmui/custom-dashboards" {
|
|
if err := handleVMUICustomDashboards(w); err != nil {
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
return true
|
|
}
|
|
if strings.HasPrefix(path, "/vmui/") {
|
|
if strings.HasPrefix(path, "/vmui/static/") {
|
|
// Allow clients caching static contents for long period of time, since it shouldn't change over time.
|
|
// Path to static contents (such as js and css) must be changed whenever its contents is changed.
|
|
// See https://developer.chrome.com/docs/lighthouse/performance/uses-long-cache-ttl/
|
|
w.Header().Set("Cache-Control", "max-age=31536000")
|
|
}
|
|
r.URL.Path = path
|
|
vmuiFileServer.ServeHTTP(w, r)
|
|
return true
|
|
}
|
|
|
|
if strings.HasPrefix(path, "/functions") {
|
|
funcName := path[len("/functions"):]
|
|
funcName = strings.TrimPrefix(funcName, "/")
|
|
if funcName == "" {
|
|
graphiteFunctionsRequests.Inc()
|
|
if err := graphite.FunctionsHandler(w, r); err != nil {
|
|
graphiteFunctionsErrors.Inc()
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
return true
|
|
}
|
|
graphiteFunctionDetailsRequests.Inc()
|
|
if err := graphite.FunctionDetailsHandler(funcName, w, r); err != nil {
|
|
graphiteFunctionDetailsErrors.Inc()
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
return true
|
|
}
|
|
|
|
if path == "/vmalert" {
|
|
// vmalert access via incomplete url without `/` in the end. Redirect to complete url.
|
|
// Use relative redirect, since the hostname and path prefix may be incorrect if VictoriaMetrics
|
|
// is hidden behind vmauth or similar proxy.
|
|
httpserver.Redirect(w, "vmalert/")
|
|
return true
|
|
}
|
|
if strings.HasPrefix(path, "/vmalert/") {
|
|
vmalertRequests.Inc()
|
|
if len(*vmalertProxyURL) == 0 {
|
|
w.WriteHeader(http.StatusBadRequest)
|
|
w.Header().Set("Content-Type", "application/json")
|
|
fmt.Fprintf(w, "%s", `{"status":"error","msg":"for accessing vmalert flag '-vmalert.proxyURL' must be configured"}`)
|
|
return true
|
|
}
|
|
proxyVMAlertRequests(w, r)
|
|
return true
|
|
}
|
|
|
|
switch path {
|
|
case "/api/v1/status/active_queries":
|
|
statusActiveQueriesRequests.Inc()
|
|
httpserver.EnableCORS(w, r)
|
|
promql.ActiveQueriesHandler(w, r)
|
|
return true
|
|
case "/api/v1/status/top_queries":
|
|
topQueriesRequests.Inc()
|
|
httpserver.EnableCORS(w, r)
|
|
if err := prometheus.QueryStatsHandler(w, r); err != nil {
|
|
topQueriesErrors.Inc()
|
|
sendPrometheusError(w, r, fmt.Errorf("cannot query status endpoint: %w", err))
|
|
return true
|
|
}
|
|
return true
|
|
case "/metric-relabel-debug":
|
|
promscrapeMetricRelabelDebugRequests.Inc()
|
|
promscrape.WriteMetricRelabelDebug(w, r)
|
|
return true
|
|
case "/target-relabel-debug":
|
|
promscrapeTargetRelabelDebugRequests.Inc()
|
|
promscrape.WriteTargetRelabelDebug(w, r)
|
|
return true
|
|
case "/expand-with-exprs":
|
|
expandWithExprsRequests.Inc()
|
|
prometheus.ExpandWithExprs(w, r)
|
|
return true
|
|
case "/prettify-query":
|
|
prettifyQueryRequests.Inc()
|
|
prometheus.PrettifyQuery(w, r)
|
|
return true
|
|
case "/api/v1/rules", "/rules":
|
|
rulesRequests.Inc()
|
|
if len(*vmalertProxyURL) > 0 {
|
|
proxyVMAlertRequests(w, r)
|
|
return true
|
|
}
|
|
// Return dumb placeholder for https://prometheus.io/docs/prometheus/latest/querying/api/#rules
|
|
w.Header().Set("Content-Type", "application/json")
|
|
fmt.Fprint(w, `{"status":"success","data":{"groups":[]}}`)
|
|
return true
|
|
case "/api/v1/alerts", "/alerts":
|
|
alertsRequests.Inc()
|
|
if len(*vmalertProxyURL) > 0 {
|
|
proxyVMAlertRequests(w, r)
|
|
return true
|
|
}
|
|
// Return dumb placeholder for https://prometheus.io/docs/prometheus/latest/querying/api/#alerts
|
|
w.Header().Set("Content-Type", "application/json")
|
|
fmt.Fprint(w, `{"status":"success","data":{"alerts":[]}}`)
|
|
return true
|
|
case "/api/v1/metadata":
|
|
// Return dumb placeholder for https://prometheus.io/docs/prometheus/latest/querying/api/#querying-metric-metadata
|
|
metadataRequests.Inc()
|
|
w.Header().Set("Content-Type", "application/json")
|
|
fmt.Fprintf(w, "%s", `{"status":"success","data":{}}`)
|
|
return true
|
|
case "/api/v1/status/buildinfo":
|
|
buildInfoRequests.Inc()
|
|
w.Header().Set("Content-Type", "application/json")
|
|
// prometheus version is used here, which affects what API Grafana uses when retrieving label values.
|
|
// as new Grafana features are added that are customized for the Prometheus version, maybe the version will need to be increased.
|
|
// see this issue for more info: https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5370
|
|
fmt.Fprintf(w, "%s", `{"status":"success","data":{"version":"2.24.0"}}`)
|
|
return true
|
|
case "/api/v1/query_exemplars":
|
|
// Return dumb placeholder for https://prometheus.io/docs/prometheus/latest/querying/api/#querying-exemplars
|
|
queryExemplarsRequests.Inc()
|
|
w.Header().Set("Content-Type", "application/json")
|
|
fmt.Fprintf(w, "%s", `{"status":"success","data":[]}`)
|
|
return true
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
func isGraphiteTagsPath(path string) bool {
|
|
switch path {
|
|
// See https://graphite.readthedocs.io/en/stable/tags.html for a list of Graphite Tags API paths.
|
|
// Do not include `/tags/<tag_name>` here, since this will fool the caller.
|
|
case "/tags/tagSeries", "/tags/tagMultiSeries", "/tags/findSeries",
|
|
"/tags/autoComplete/tags", "/tags/autoComplete/values", "/tags/delSeries":
|
|
return true
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
func sendPrometheusError(w http.ResponseWriter, r *http.Request, err error) {
|
|
logger.WarnfSkipframes(1, "error in %q: %s", httpserver.GetRequestURI(r), err)
|
|
|
|
w.Header().Set("Content-Type", "application/json")
|
|
statusCode := http.StatusUnprocessableEntity
|
|
var esc *httpserver.ErrorWithStatusCode
|
|
if errors.As(err, &esc) {
|
|
statusCode = esc.StatusCode
|
|
}
|
|
w.WriteHeader(statusCode)
|
|
|
|
var ure *promql.UserReadableError
|
|
if errors.As(err, &ure) {
|
|
err = ure
|
|
}
|
|
prometheus.WriteErrorResponse(w, statusCode, err)
|
|
}
|
|
|
|
var (
|
|
requestDuration = metrics.NewHistogram(`vmselect_request_duration_seconds`)
|
|
|
|
labelValuesRequests = metrics.NewCounter(`vm_http_requests_total{path="/api/v1/label/{}/values"}`)
|
|
labelValuesErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/api/v1/label/{}/values"}`)
|
|
|
|
queryRequests = metrics.NewCounter(`vm_http_requests_total{path="/api/v1/query"}`)
|
|
queryErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/api/v1/query"}`)
|
|
|
|
queryRangeRequests = metrics.NewCounter(`vm_http_requests_total{path="/api/v1/query_range"}`)
|
|
queryRangeErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/api/v1/query_range"}`)
|
|
|
|
seriesRequests = metrics.NewCounter(`vm_http_requests_total{path="/api/v1/series"}`)
|
|
seriesErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/api/v1/series"}`)
|
|
|
|
seriesCountRequests = metrics.NewCounter(`vm_http_requests_total{path="/api/v1/series/count"}`)
|
|
seriesCountErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/api/v1/series/count"}`)
|
|
|
|
labelsRequests = metrics.NewCounter(`vm_http_requests_total{path="/api/v1/labels"}`)
|
|
labelsErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/api/v1/labels"}`)
|
|
|
|
statusTSDBRequests = metrics.NewCounter(`vm_http_requests_total{path="/api/v1/status/tsdb"}`)
|
|
statusTSDBErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/api/v1/status/tsdb"}`)
|
|
|
|
statusActiveQueriesRequests = metrics.NewCounter(`vm_http_requests_total{path="/api/v1/status/active_queries"}`)
|
|
|
|
topQueriesRequests = metrics.NewCounter(`vm_http_requests_total{path="/api/v1/status/top_queries"}`)
|
|
topQueriesErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/api/v1/status/top_queries"}`)
|
|
|
|
deleteRequests = metrics.NewCounter(`vm_http_requests_total{path="/api/v1/admin/tsdb/delete_series"}`)
|
|
deleteErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/api/v1/admin/tsdb/delete_series"}`)
|
|
|
|
exportRequests = metrics.NewCounter(`vm_http_requests_total{path="/api/v1/export"}`)
|
|
exportErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/api/v1/export"}`)
|
|
|
|
exportCSVRequests = metrics.NewCounter(`vm_http_requests_total{path="/api/v1/export/csv"}`)
|
|
exportCSVErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/api/v1/export/csv"}`)
|
|
|
|
exportNativeRequests = metrics.NewCounter(`vm_http_requests_total{path="/api/v1/export/native"}`)
|
|
exportNativeErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/api/v1/export/native"}`)
|
|
|
|
federateRequests = metrics.NewCounter(`vm_http_requests_total{path="/federate"}`)
|
|
federateErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/federate"}`)
|
|
|
|
graphiteMetricsFindRequests = metrics.NewCounter(`vm_http_requests_total{path="/metrics/find"}`)
|
|
graphiteMetricsFindErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/metrics/find"}`)
|
|
|
|
graphiteMetricsExpandRequests = metrics.NewCounter(`vm_http_requests_total{path="/metrics/expand"}`)
|
|
graphiteMetricsExpandErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/metrics/expand"}`)
|
|
|
|
graphiteMetricsIndexRequests = metrics.NewCounter(`vm_http_requests_total{path="/metrics/index.json"}`)
|
|
graphiteMetricsIndexErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/metrics/index.json"}`)
|
|
|
|
graphiteTagsTagSeriesRequests = metrics.NewCounter(`vm_http_requests_total{path="/tags/tagSeries"}`)
|
|
graphiteTagsTagSeriesErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/tags/tagSeries"}`)
|
|
|
|
graphiteTagsTagMultiSeriesRequests = metrics.NewCounter(`vm_http_requests_total{path="/tags/tagMultiSeries"}`)
|
|
graphiteTagsTagMultiSeriesErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/tags/tagMultiSeries"}`)
|
|
|
|
graphiteTagsRequests = metrics.NewCounter(`vm_http_requests_total{path="/tags"}`)
|
|
graphiteTagsErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/tags"}`)
|
|
|
|
graphiteTagValuesRequests = metrics.NewCounter(`vm_http_requests_total{path="/tags/<tag_name>"}`)
|
|
graphiteTagValuesErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/tags/<tag_name>"}`)
|
|
|
|
graphiteTagsFindSeriesRequests = metrics.NewCounter(`vm_http_requests_total{path="/tags/findSeries"}`)
|
|
graphiteTagsFindSeriesErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/tags/findSeries"}`)
|
|
|
|
graphiteTagsAutoCompleteTagsRequests = metrics.NewCounter(`vm_http_requests_total{path="/tags/autoComplete/tags"}`)
|
|
graphiteTagsAutoCompleteTagsErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/tags/autoComplete/tags"}`)
|
|
|
|
graphiteTagsAutoCompleteValuesRequests = metrics.NewCounter(`vm_http_requests_total{path="/tags/autoComplete/values"}`)
|
|
graphiteTagsAutoCompleteValuesErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/tags/autoComplete/values"}`)
|
|
|
|
graphiteTagsDelSeriesRequests = metrics.NewCounter(`vm_http_requests_total{path="/tags/delSeries"}`)
|
|
graphiteTagsDelSeriesErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/tags/delSeries"}`)
|
|
|
|
graphiteRenderRequests = metrics.NewCounter(`vm_http_requests_total{path="/render"}`)
|
|
graphiteRenderErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/render"}`)
|
|
|
|
promscrapeMetricRelabelDebugRequests = metrics.NewCounter(`vm_http_requests_total{path="/metric-relabel-debug"}`)
|
|
promscrapeTargetRelabelDebugRequests = metrics.NewCounter(`vm_http_requests_total{path="/target-relabel-debug"}`)
|
|
|
|
graphiteFunctionsRequests = metrics.NewCounter(`vm_http_requests_total{path="/functions"}`)
|
|
graphiteFunctionsErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/functions"}`)
|
|
|
|
graphiteFunctionDetailsRequests = metrics.NewCounter(`vm_http_requests_total{path="/functions/<func_name>"}`)
|
|
graphiteFunctionDetailsErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/functions/<func_name>"}`)
|
|
|
|
expandWithExprsRequests = metrics.NewCounter(`vm_http_requests_total{path="/expand-with-exprs"}`)
|
|
prettifyQueryRequests = metrics.NewCounter(`vm_http_requests_total{path="/prettify-query"}`)
|
|
|
|
vmalertRequests = metrics.NewCounter(`vm_http_requests_total{path="/vmalert"}`)
|
|
rulesRequests = metrics.NewCounter(`vm_http_requests_total{path="/api/v1/rules"}`)
|
|
alertsRequests = metrics.NewCounter(`vm_http_requests_total{path="/api/v1/alerts"}`)
|
|
|
|
metadataRequests = metrics.NewCounter(`vm_http_requests_total{path="/api/v1/metadata"}`)
|
|
buildInfoRequests = metrics.NewCounter(`vm_http_requests_total{path="/api/v1/buildinfo"}`)
|
|
queryExemplarsRequests = metrics.NewCounter(`vm_http_requests_total{path="/api/v1/query_exemplars"}`)
|
|
)
|
|
|
|
func proxyVMAlertRequests(w http.ResponseWriter, r *http.Request) {
|
|
defer func() {
|
|
err := recover()
|
|
if err == nil || err == http.ErrAbortHandler {
|
|
// Suppress http.ErrAbortHandler panic.
|
|
// See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1353
|
|
return
|
|
}
|
|
// Forward other panics to the caller.
|
|
panic(err)
|
|
}()
|
|
r.Host = vmalertProxyHost
|
|
vmalertProxy.ServeHTTP(w, r)
|
|
}
|
|
|
|
var (
|
|
vmalertProxyHost string
|
|
vmalertProxy *httputil.ReverseProxy
|
|
)
|
|
|
|
// initVMAlertProxy must be called after flag.Parse(), since it uses command-line flags.
|
|
func initVMAlertProxy() {
|
|
if len(*vmalertProxyURL) == 0 {
|
|
return
|
|
}
|
|
proxyURL, err := url.Parse(*vmalertProxyURL)
|
|
if err != nil {
|
|
logger.Fatalf("cannot parse -vmalert.proxyURL=%q: %s", *vmalertProxyURL, err)
|
|
}
|
|
vmalertProxyHost = proxyURL.Host
|
|
vmalertProxy = httputil.NewSingleHostReverseProxy(proxyURL)
|
|
}
|