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app/vmselect: add -search.maxStatusRequestDuration command-line flag for limiting the duration of requests to /api/v1/status/* and /api/v1/series/count

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This commit is contained in:
Aliaksandr Valialkin 2021-03-30 21:38:59 +03:00
parent 2af39a96c5
commit e7fdea5953
2 changed files with 12 additions and 5 deletions
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6
app/vmselect/prometheus/prometheus.go
View File

@ -610,7 +610,7 @@ var labelValuesDuration = metrics.NewSummary(`vm_request_duration_seconds{path="
// LabelsCountHandler processes /api/v1/labels/count request.
func LabelsCountHandler(startTime time.Time, w http.ResponseWriter, r *http.Request) error {
deadline := searchutils.GetDeadlineForQuery(r, startTime)
deadline := searchutils.GetDeadlineForStatusRequest(r, startTime)
labelEntries, err := netstorage.GetLabelEntries(deadline)
if err != nil {
return fmt.Errorf(`cannot obtain label entries: %w`, err)
@ -634,7 +634,7 @@ const secsPerDay = 3600 * 24
//
// See https://prometheus.io/docs/prometheus/latest/querying/api/#tsdb-stats
func TSDBStatusHandler(startTime time.Time, w http.ResponseWriter, r *http.Request) error {
deadline := searchutils.GetDeadlineForQuery(r, startTime)
deadline := searchutils.GetDeadlineForStatusRequest(r, startTime)
if err := r.ParseForm(); err != nil {
return fmt.Errorf("cannot parse form values: %w", err)
}
@ -810,7 +810,7 @@ var labelsDuration = metrics.NewSummary(`vm_request_duration_seconds{path="/api/
// SeriesCountHandler processes /api/v1/series/count request.
func SeriesCountHandler(startTime time.Time, w http.ResponseWriter, r *http.Request) error {
deadline := searchutils.GetDeadlineForQuery(r, startTime)
deadline := searchutils.GetDeadlineForStatusRequest(r, startTime)
n, err := netstorage.GetSeriesCount(deadline)
if err != nil {
return fmt.Errorf("cannot obtain series count: %w", err)

11
app/vmselect/searchutils/searchutils.go
View File

@ -16,8 +16,9 @@ import (
)
var (
maxExportDuration = flag.Duration("search.maxExportDuration", time.Hour*24*30, "The maximum duration for /api/v1/export call")
maxQueryDuration = flag.Duration("search.maxQueryDuration", time.Second*30, "The maximum duration for query execution")
maxExportDuration = flag.Duration("search.maxExportDuration", time.Hour*24*30, "The maximum duration for /api/v1/export call")
maxQueryDuration = flag.Duration("search.maxQueryDuration", time.Second*30, "The maximum duration for query execution")
maxStatusRequestDuration = flag.Duration("search.maxStatusRequestDuration", time.Minute*5, "The maximum duration for /api/v1/status/* requests")
)
func roundToSeconds(ms int64) int64 {
@ -125,6 +126,12 @@ func GetDeadlineForQuery(r *http.Request, startTime time.Time) Deadline {
return getDeadlineWithMaxDuration(r, startTime, dMax, "-search.maxQueryDuration")
}
// GetDeadlineForStatusRequest returns deadline for the given request to /api/v1/status/*.
func GetDeadlineForStatusRequest(r *http.Request, startTime time.Time) Deadline {
dMax := maxStatusRequestDuration.Milliseconds()
return getDeadlineWithMaxDuration(r, startTime, dMax, "-search.maxStatusRequestDuration")
}
// GetDeadlineForExport returns deadline for the given request to /api/v1/export.
func GetDeadlineForExport(r *http.Request, startTime time.Time) Deadline {
dMax := maxExportDuration.Milliseconds()