mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-11-21 14:44:00 +00:00
2324 lines
74 KiB
Go
2324 lines
74 KiB
Go
package netstorage
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import (
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"container/heap"
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"errors"
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"flag"
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"fmt"
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"io"
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"net"
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"net/http"
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"regexp"
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"sort"
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"strings"
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"sync"
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"sync/atomic"
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"time"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vmselect/searchutils"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/cgroup"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/encoding"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/fasttime"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/handshake"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/netutil"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/querytracer"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/storage"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/syncwg"
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"github.com/VictoriaMetrics/metrics"
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"github.com/cespare/xxhash/v2"
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"github.com/valyala/fastrand"
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)
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var (
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replicationFactor = flag.Int("replicationFactor", 1, "How many copies of every time series is available on vmstorage nodes. "+
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"See -replicationFactor command-line flag for vminsert nodes")
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maxSamplesPerSeries = flag.Int("search.maxSamplesPerSeries", 30e6, "The maximum number of raw samples a single query can scan per each time series. See also -search.maxSamplesPerQuery")
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maxSamplesPerQuery = flag.Int("search.maxSamplesPerQuery", 1e9, "The maximum number of raw samples a single query can process across all time series. This protects from heavy queries, which select unexpectedly high number of raw samples. See also -search.maxSamplesPerSeries")
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vmstorageDialTimeout = flag.Duration("vmstorageDialTimeout", 5*time.Second, "Timeout for establishing RPC connections from vmselect to vmstorage")
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)
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// Result is a single timeseries result.
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//
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// ProcessSearchQuery returns Result slice.
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type Result struct {
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// The name of the metric.
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MetricName storage.MetricName
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// Values are sorted by Timestamps.
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Values []float64
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Timestamps []int64
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}
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func (r *Result) reset() {
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r.MetricName.Reset()
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r.Values = r.Values[:0]
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r.Timestamps = r.Timestamps[:0]
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}
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// Results holds results returned from ProcessSearchQuery.
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type Results struct {
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tr storage.TimeRange
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deadline searchutils.Deadline
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tbf *tmpBlocksFile
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packedTimeseries []packedTimeseries
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}
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// Len returns the number of results in rss.
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func (rss *Results) Len() int {
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return len(rss.packedTimeseries)
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}
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// Cancel cancels rss work.
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func (rss *Results) Cancel() {
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putTmpBlocksFile(rss.tbf)
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rss.tbf = nil
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}
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type timeseriesWork struct {
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mustStop *uint32
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rss *Results
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pts *packedTimeseries
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f func(rs *Result, workerID uint) error
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doneCh chan error
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rowsProcessed int
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}
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func (tsw *timeseriesWork) reset() {
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tsw.mustStop = nil
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tsw.rss = nil
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tsw.pts = nil
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tsw.f = nil
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if n := len(tsw.doneCh); n > 0 {
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logger.Panicf("BUG: tsw.doneCh must be empty during reset; it contains %d items instead", n)
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}
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tsw.rowsProcessed = 0
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}
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func getTimeseriesWork() *timeseriesWork {
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v := tswPool.Get()
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if v == nil {
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v = ×eriesWork{
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doneCh: make(chan error, 1),
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}
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}
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return v.(*timeseriesWork)
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}
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func putTimeseriesWork(tsw *timeseriesWork) {
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tsw.reset()
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tswPool.Put(tsw)
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}
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var tswPool sync.Pool
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func scheduleTimeseriesWork(workChs []chan *timeseriesWork, tsw *timeseriesWork) {
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if len(workChs) == 1 {
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// Fast path for a single worker
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workChs[0] <- tsw
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return
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}
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attempts := 0
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for {
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idx := fastrand.Uint32n(uint32(len(workChs)))
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select {
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case workChs[idx] <- tsw:
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return
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default:
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attempts++
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if attempts >= len(workChs) {
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workChs[idx] <- tsw
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return
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}
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}
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}
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}
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func (tsw *timeseriesWork) do(r *Result, workerID uint) error {
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if atomic.LoadUint32(tsw.mustStop) != 0 {
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return nil
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}
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rss := tsw.rss
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if rss.deadline.Exceeded() {
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atomic.StoreUint32(tsw.mustStop, 1)
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return fmt.Errorf("timeout exceeded during query execution: %s", rss.deadline.String())
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}
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if err := tsw.pts.Unpack(r, rss.tbf, rss.tr); err != nil {
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atomic.StoreUint32(tsw.mustStop, 1)
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return fmt.Errorf("error during time series unpacking: %w", err)
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}
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if len(r.Timestamps) > 0 {
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if err := tsw.f(r, workerID); err != nil {
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atomic.StoreUint32(tsw.mustStop, 1)
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return err
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}
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}
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tsw.rowsProcessed = len(r.Values)
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return nil
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}
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func timeseriesWorker(ch <-chan *timeseriesWork, workerID uint) {
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v := resultPool.Get()
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if v == nil {
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v = &result{}
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}
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r := v.(*result)
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for tsw := range ch {
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err := tsw.do(&r.rs, workerID)
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tsw.doneCh <- err
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}
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currentTime := fasttime.UnixTimestamp()
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if cap(r.rs.Values) > 1024*1024 && 4*len(r.rs.Values) < cap(r.rs.Values) && currentTime-r.lastResetTime > 10 {
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// Reset r.rs in order to preseve memory usage after processing big time series with millions of rows.
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r.rs = Result{}
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r.lastResetTime = currentTime
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}
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resultPool.Put(r)
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}
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type result struct {
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rs Result
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lastResetTime uint64
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}
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var resultPool sync.Pool
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// RunParallel runs f in parallel for all the results from rss.
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//
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// f shouldn't hold references to rs after returning.
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// workerID is the id of the worker goroutine that calls f.
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// Data processing is immediately stopped if f returns non-nil error.
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//
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// rss becomes unusable after the call to RunParallel.
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func (rss *Results) RunParallel(qt *querytracer.Tracer, f func(rs *Result, workerID uint) error) error {
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qt = qt.NewChild("parallel process of fetched data")
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defer func() {
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putTmpBlocksFile(rss.tbf)
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rss.tbf = nil
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}()
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// Spin up local workers.
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//
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// Do not use a global workChs with a global pool of workers, since it may lead to a deadlock in the following case:
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// - RunParallel is called with f, which blocks without forward progress.
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// - All the workers in the global pool became blocked in f.
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// - workChs is filled up, so it cannot accept new work items from other RunParallel calls.
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workers := len(rss.packedTimeseries)
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if workers > gomaxprocs {
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workers = gomaxprocs
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}
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if workers < 1 {
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workers = 1
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}
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workChs := make([]chan *timeseriesWork, workers)
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var workChsWG sync.WaitGroup
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for i := 0; i < workers; i++ {
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workChs[i] = make(chan *timeseriesWork, 16)
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workChsWG.Add(1)
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go func(workerID int) {
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defer workChsWG.Done()
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timeseriesWorker(workChs[workerID], uint(workerID))
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}(i)
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}
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// Feed workers with work.
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tsws := make([]*timeseriesWork, len(rss.packedTimeseries))
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var mustStop uint32
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for i := range rss.packedTimeseries {
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tsw := getTimeseriesWork()
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tsw.rss = rss
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tsw.pts = &rss.packedTimeseries[i]
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tsw.f = f
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tsw.mustStop = &mustStop
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scheduleTimeseriesWork(workChs, tsw)
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tsws[i] = tsw
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}
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seriesProcessedTotal := len(rss.packedTimeseries)
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rss.packedTimeseries = rss.packedTimeseries[:0]
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// Wait until work is complete.
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var firstErr error
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rowsProcessedTotal := 0
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for _, tsw := range tsws {
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if err := <-tsw.doneCh; err != nil && firstErr == nil {
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// Return just the first error, since other errors are likely duplicate the first error.
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firstErr = err
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}
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rowsReadPerSeries.Update(float64(tsw.rowsProcessed))
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rowsProcessedTotal += tsw.rowsProcessed
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putTimeseriesWork(tsw)
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}
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rowsReadPerQuery.Update(float64(rowsProcessedTotal))
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seriesReadPerQuery.Update(float64(seriesProcessedTotal))
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// Shut down local workers
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for _, workCh := range workChs {
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close(workCh)
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}
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workChsWG.Wait()
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qt.Donef("series=%d, samples=%d", seriesProcessedTotal, rowsProcessedTotal)
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return firstErr
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}
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var (
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rowsReadPerSeries = metrics.NewHistogram(`vm_rows_read_per_series`)
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rowsReadPerQuery = metrics.NewHistogram(`vm_rows_read_per_query`)
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seriesReadPerQuery = metrics.NewHistogram(`vm_series_read_per_query`)
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)
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var gomaxprocs = cgroup.AvailableCPUs()
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type packedTimeseries struct {
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metricName string
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addrs []tmpBlockAddr
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}
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type unpackWorkItem struct {
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addr tmpBlockAddr
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tr storage.TimeRange
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}
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type unpackWork struct {
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ws []unpackWorkItem
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tbf *tmpBlocksFile
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sbs []*sortBlock
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doneCh chan error
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}
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func (upw *unpackWork) reset() {
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ws := upw.ws
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for i := range ws {
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w := &ws[i]
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w.addr = tmpBlockAddr{}
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w.tr = storage.TimeRange{}
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}
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upw.ws = upw.ws[:0]
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upw.tbf = nil
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sbs := upw.sbs
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for i := range sbs {
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sbs[i] = nil
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}
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upw.sbs = upw.sbs[:0]
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if n := len(upw.doneCh); n > 0 {
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logger.Panicf("BUG: upw.doneCh must be empty; it contains %d items now", n)
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}
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}
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func (upw *unpackWork) unpack(tmpBlock *storage.Block) {
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for _, w := range upw.ws {
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sb := getSortBlock()
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if err := sb.unpackFrom(tmpBlock, upw.tbf, w.addr, w.tr); err != nil {
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putSortBlock(sb)
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upw.doneCh <- fmt.Errorf("cannot unpack block: %w", err)
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return
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}
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upw.sbs = append(upw.sbs, sb)
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}
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upw.doneCh <- nil
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}
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func getUnpackWork() *unpackWork {
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v := unpackWorkPool.Get()
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if v != nil {
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return v.(*unpackWork)
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}
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return &unpackWork{
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doneCh: make(chan error, 1),
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}
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}
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func putUnpackWork(upw *unpackWork) {
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upw.reset()
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unpackWorkPool.Put(upw)
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}
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var unpackWorkPool sync.Pool
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func scheduleUnpackWork(workChs []chan *unpackWork, uw *unpackWork) {
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if len(workChs) == 1 {
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// Fast path for a single worker
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workChs[0] <- uw
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return
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}
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attempts := 0
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for {
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idx := fastrand.Uint32n(uint32(len(workChs)))
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select {
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case workChs[idx] <- uw:
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return
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default:
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attempts++
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if attempts >= len(workChs) {
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workChs[idx] <- uw
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return
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}
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}
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}
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}
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func unpackWorker(ch <-chan *unpackWork) {
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v := tmpBlockPool.Get()
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if v == nil {
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v = &storage.Block{}
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}
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tmpBlock := v.(*storage.Block)
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for upw := range ch {
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upw.unpack(tmpBlock)
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}
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tmpBlockPool.Put(v)
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}
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var tmpBlockPool sync.Pool
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// unpackBatchSize is the maximum number of blocks that may be unpacked at once by a single goroutine.
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//
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// It is better to load a single goroutine for up to one second on a system with many CPU cores
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// in order to reduce inter-CPU memory ping-pong.
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// A single goroutine can unpack up to 40 millions of rows per second, while a single block contains up to 8K rows.
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// So the batch size should be 40M / 8K = 5K.
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var unpackBatchSize = 5000
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// Unpack unpacks pts to dst.
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func (pts *packedTimeseries) Unpack(dst *Result, tbf *tmpBlocksFile, tr storage.TimeRange) error {
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dst.reset()
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if err := dst.MetricName.Unmarshal(bytesutil.ToUnsafeBytes(pts.metricName)); err != nil {
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return fmt.Errorf("cannot unmarshal metricName %q: %w", pts.metricName, err)
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}
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// Spin up local workers.
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// Do not use global workers pool, since it increases inter-CPU memory ping-poing,
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// which reduces the scalability on systems with many CPU cores.
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addrsLen := len(pts.addrs)
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workers := addrsLen / unpackBatchSize
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if workers > gomaxprocs {
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workers = gomaxprocs
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}
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if workers < 1 {
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workers = 1
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}
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workChs := make([]chan *unpackWork, workers)
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var workChsWG sync.WaitGroup
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for i := 0; i < workers; i++ {
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// Use unbuffered channel on purpose, since there are high chances
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// that only a single unpackWork is needed to unpack.
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// The unbuffered channel should reduce inter-CPU ping-pong in this case,
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// which should improve the performance in a system with many CPU cores.
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workChs[i] = make(chan *unpackWork)
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workChsWG.Add(1)
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go func(workerID int) {
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defer workChsWG.Done()
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unpackWorker(workChs[workerID])
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}(i)
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}
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// Feed workers with work
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upws := make([]*unpackWork, 0, 1+addrsLen/unpackBatchSize)
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upw := getUnpackWork()
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upw.tbf = tbf
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for _, addr := range pts.addrs {
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if len(upw.ws) >= unpackBatchSize {
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scheduleUnpackWork(workChs, upw)
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upws = append(upws, upw)
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upw = getUnpackWork()
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upw.tbf = tbf
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}
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upw.ws = append(upw.ws, unpackWorkItem{
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addr: addr,
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tr: tr,
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})
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}
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scheduleUnpackWork(workChs, upw)
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upws = append(upws, upw)
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pts.addrs = pts.addrs[:0]
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|
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// Wait until work is complete
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samples := 0
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sbs := make([]*sortBlock, 0, addrsLen)
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var firstErr error
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for _, upw := range upws {
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if err := <-upw.doneCh; err != nil && firstErr == nil {
|
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// Return the first error only, since other errors are likely the same.
|
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firstErr = err
|
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}
|
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if firstErr == nil {
|
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for _, sb := range upw.sbs {
|
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samples += len(sb.Timestamps)
|
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}
|
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if *maxSamplesPerSeries <= 0 || samples < *maxSamplesPerSeries {
|
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sbs = append(sbs, upw.sbs...)
|
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} else {
|
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firstErr = fmt.Errorf("cannot process more than %d samples per series; either increase -search.maxSamplesPerSeries "+
|
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"or reduce time range for the query", *maxSamplesPerSeries)
|
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}
|
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}
|
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if firstErr != nil {
|
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for _, sb := range upw.sbs {
|
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putSortBlock(sb)
|
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}
|
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}
|
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putUnpackWork(upw)
|
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}
|
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|
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// Shut down local workers
|
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for _, workCh := range workChs {
|
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close(workCh)
|
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}
|
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workChsWG.Wait()
|
|
|
|
if firstErr != nil {
|
|
return firstErr
|
|
}
|
|
dedupInterval := storage.GetDedupInterval()
|
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mergeSortBlocks(dst, sbs, dedupInterval)
|
|
return nil
|
|
}
|
|
|
|
func getSortBlock() *sortBlock {
|
|
v := sbPool.Get()
|
|
if v == nil {
|
|
return &sortBlock{}
|
|
}
|
|
return v.(*sortBlock)
|
|
}
|
|
|
|
func putSortBlock(sb *sortBlock) {
|
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sb.reset()
|
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sbPool.Put(sb)
|
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}
|
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|
|
var sbPool sync.Pool
|
|
|
|
var metricRowsSkipped = metrics.NewCounter(`vm_metric_rows_skipped_total{name="vmselect"}`)
|
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|
|
func mergeSortBlocks(dst *Result, sbh sortBlocksHeap, dedupInterval int64) {
|
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// Skip empty sort blocks, since they cannot be passed to heap.Init.
|
|
src := sbh
|
|
sbh = sbh[:0]
|
|
for _, sb := range src {
|
|
if len(sb.Timestamps) == 0 {
|
|
putSortBlock(sb)
|
|
continue
|
|
}
|
|
sbh = append(sbh, sb)
|
|
}
|
|
if len(sbh) == 0 {
|
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return
|
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}
|
|
heap.Init(&sbh)
|
|
for {
|
|
top := sbh[0]
|
|
heap.Pop(&sbh)
|
|
if len(sbh) == 0 {
|
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dst.Timestamps = append(dst.Timestamps, top.Timestamps[top.NextIdx:]...)
|
|
dst.Values = append(dst.Values, top.Values[top.NextIdx:]...)
|
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putSortBlock(top)
|
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break
|
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}
|
|
sbNext := sbh[0]
|
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tsNext := sbNext.Timestamps[sbNext.NextIdx]
|
|
idxNext := len(top.Timestamps)
|
|
if top.Timestamps[idxNext-1] > tsNext {
|
|
idxNext = top.NextIdx
|
|
for top.Timestamps[idxNext] <= tsNext {
|
|
idxNext++
|
|
}
|
|
}
|
|
dst.Timestamps = append(dst.Timestamps, top.Timestamps[top.NextIdx:idxNext]...)
|
|
dst.Values = append(dst.Values, top.Values[top.NextIdx:idxNext]...)
|
|
if idxNext < len(top.Timestamps) {
|
|
top.NextIdx = idxNext
|
|
heap.Push(&sbh, top)
|
|
} else {
|
|
// Return top to the pool.
|
|
putSortBlock(top)
|
|
}
|
|
}
|
|
timestamps, values := storage.DeduplicateSamples(dst.Timestamps, dst.Values, dedupInterval)
|
|
dedups := len(dst.Timestamps) - len(timestamps)
|
|
dedupsDuringSelect.Add(dedups)
|
|
dst.Timestamps = timestamps
|
|
dst.Values = values
|
|
}
|
|
|
|
var dedupsDuringSelect = metrics.NewCounter(`vm_deduplicated_samples_total{type="select"}`)
|
|
|
|
type sortBlock struct {
|
|
Timestamps []int64
|
|
Values []float64
|
|
NextIdx int
|
|
}
|
|
|
|
func (sb *sortBlock) reset() {
|
|
sb.Timestamps = sb.Timestamps[:0]
|
|
sb.Values = sb.Values[:0]
|
|
sb.NextIdx = 0
|
|
}
|
|
|
|
func (sb *sortBlock) unpackFrom(tmpBlock *storage.Block, tbf *tmpBlocksFile, addr tmpBlockAddr, tr storage.TimeRange) error {
|
|
tmpBlock.Reset()
|
|
tbf.MustReadBlockAt(tmpBlock, addr)
|
|
if err := tmpBlock.UnmarshalData(); err != nil {
|
|
return fmt.Errorf("cannot unmarshal block: %w", err)
|
|
}
|
|
sb.Timestamps, sb.Values = tmpBlock.AppendRowsWithTimeRangeFilter(sb.Timestamps[:0], sb.Values[:0], tr)
|
|
skippedRows := tmpBlock.RowsCount() - len(sb.Timestamps)
|
|
metricRowsSkipped.Add(skippedRows)
|
|
return nil
|
|
}
|
|
|
|
type sortBlocksHeap []*sortBlock
|
|
|
|
func (sbh sortBlocksHeap) Len() int {
|
|
return len(sbh)
|
|
}
|
|
|
|
func (sbh sortBlocksHeap) Less(i, j int) bool {
|
|
a := sbh[i]
|
|
b := sbh[j]
|
|
return a.Timestamps[a.NextIdx] < b.Timestamps[b.NextIdx]
|
|
}
|
|
|
|
func (sbh sortBlocksHeap) Swap(i, j int) {
|
|
sbh[i], sbh[j] = sbh[j], sbh[i]
|
|
}
|
|
|
|
func (sbh *sortBlocksHeap) Push(x interface{}) {
|
|
*sbh = append(*sbh, x.(*sortBlock))
|
|
}
|
|
|
|
func (sbh *sortBlocksHeap) Pop() interface{} {
|
|
a := *sbh
|
|
v := a[len(a)-1]
|
|
*sbh = a[:len(a)-1]
|
|
return v
|
|
}
|
|
|
|
// RegisterMetricNames registers metric names from mrs in the storage.
|
|
func RegisterMetricNames(qt *querytracer.Tracer, mrs []storage.MetricRow, deadline searchutils.Deadline) error {
|
|
qt = qt.NewChild("register metric names")
|
|
defer qt.Done()
|
|
// Split mrs among available vmstorage nodes.
|
|
mrsPerNode := make([][]storage.MetricRow, len(storageNodes))
|
|
for _, mr := range mrs {
|
|
idx := 0
|
|
if len(storageNodes) > 1 {
|
|
// There is no need in using the same hash as for time series distribution in vminsert,
|
|
// since RegisterMetricNames is used only in Graphite Tags API.
|
|
h := xxhash.Sum64(mr.MetricNameRaw)
|
|
idx = int(h % uint64(len(storageNodes)))
|
|
}
|
|
mrsPerNode[idx] = append(mrsPerNode[idx], mr)
|
|
}
|
|
|
|
// Push mrs to storage nodes in parallel.
|
|
snr := startStorageNodesRequest(qt, true, func(qt *querytracer.Tracer, idx int, sn *storageNode) interface{} {
|
|
sn.registerMetricNamesRequests.Inc()
|
|
err := sn.registerMetricNames(qt, mrsPerNode[idx], deadline)
|
|
if err != nil {
|
|
sn.registerMetricNamesErrors.Inc()
|
|
}
|
|
return &err
|
|
})
|
|
|
|
// Collect results
|
|
err := snr.collectAllResults(func(result interface{}) error {
|
|
errP := result.(*error)
|
|
return *errP
|
|
})
|
|
if err != nil {
|
|
return fmt.Errorf("cannot register series on all the vmstorage nodes: %w", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// DeleteSeries deletes time series matching the given sq.
|
|
func DeleteSeries(qt *querytracer.Tracer, sq *storage.SearchQuery, deadline searchutils.Deadline) (int, error) {
|
|
qt = qt.NewChild("delete series: %s", sq)
|
|
defer qt.Done()
|
|
requestData := sq.Marshal(nil)
|
|
|
|
// Send the query to all the storage nodes in parallel.
|
|
type nodeResult struct {
|
|
deletedCount int
|
|
err error
|
|
}
|
|
snr := startStorageNodesRequest(qt, true, func(qt *querytracer.Tracer, idx int, sn *storageNode) interface{} {
|
|
sn.deleteSeriesRequests.Inc()
|
|
deletedCount, err := sn.deleteSeries(qt, requestData, deadline)
|
|
if err != nil {
|
|
sn.deleteSeriesErrors.Inc()
|
|
}
|
|
return &nodeResult{
|
|
deletedCount: deletedCount,
|
|
err: err,
|
|
}
|
|
})
|
|
|
|
// Collect results
|
|
deletedTotal := 0
|
|
err := snr.collectAllResults(func(result interface{}) error {
|
|
nr := result.(*nodeResult)
|
|
if nr.err != nil {
|
|
return nr.err
|
|
}
|
|
deletedTotal += nr.deletedCount
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return deletedTotal, fmt.Errorf("cannot delete time series on all the vmstorage nodes: %w", err)
|
|
}
|
|
return deletedTotal, nil
|
|
}
|
|
|
|
// LabelNames returns label names matching the given sq until the given deadline.
|
|
func LabelNames(qt *querytracer.Tracer, denyPartialResponse bool, sq *storage.SearchQuery, maxLabelNames int, deadline searchutils.Deadline) ([]string, bool, error) {
|
|
qt = qt.NewChild("get labels: %s", sq)
|
|
defer qt.Done()
|
|
if deadline.Exceeded() {
|
|
return nil, false, fmt.Errorf("timeout exceeded before starting the query processing: %s", deadline.String())
|
|
}
|
|
requestData := sq.Marshal(nil)
|
|
// Send the query to all the storage nodes in parallel.
|
|
type nodeResult struct {
|
|
labelNames []string
|
|
err error
|
|
}
|
|
snr := startStorageNodesRequest(qt, denyPartialResponse, func(qt *querytracer.Tracer, idx int, sn *storageNode) interface{} {
|
|
sn.labelNamesRequests.Inc()
|
|
labelNames, err := sn.getLabelNames(qt, requestData, maxLabelNames, deadline)
|
|
if err != nil {
|
|
sn.labelNamesErrors.Inc()
|
|
err = fmt.Errorf("cannot get labels from vmstorage %s: %w", sn.connPool.Addr(), err)
|
|
}
|
|
return &nodeResult{
|
|
labelNames: labelNames,
|
|
err: err,
|
|
}
|
|
})
|
|
|
|
// Collect results
|
|
var labelNames []string
|
|
isPartial, err := snr.collectResults(partialLabelNamesResults, func(result interface{}) error {
|
|
nr := result.(*nodeResult)
|
|
if nr.err != nil {
|
|
return nr.err
|
|
}
|
|
labelNames = append(labelNames, nr.labelNames...)
|
|
return nil
|
|
})
|
|
qt.Printf("get %d non-duplicated labels", len(labelNames))
|
|
if err != nil {
|
|
return nil, isPartial, fmt.Errorf("cannot fetch labels from vmstorage nodes: %w", err)
|
|
}
|
|
|
|
// Deduplicate labels
|
|
labelNames = deduplicateStrings(labelNames)
|
|
qt.Printf("get %d unique labels after de-duplication", len(labelNames))
|
|
if maxLabelNames > 0 && maxLabelNames < len(labelNames) {
|
|
labelNames = labelNames[:maxLabelNames]
|
|
}
|
|
// Sort labelNames like Prometheus does
|
|
sort.Strings(labelNames)
|
|
qt.Printf("sort %d labels", len(labelNames))
|
|
return labelNames, isPartial, nil
|
|
}
|
|
|
|
// GraphiteTags returns Graphite tags until the given deadline.
|
|
func GraphiteTags(qt *querytracer.Tracer, accountID, projectID uint32, denyPartialResponse bool, filter string, limit int, deadline searchutils.Deadline) ([]string, bool, error) {
|
|
qt = qt.NewChild("get graphite tags: filter=%s, limit=%d", filter, limit)
|
|
defer qt.Done()
|
|
if deadline.Exceeded() {
|
|
return nil, false, fmt.Errorf("timeout exceeded before starting the query processing: %s", deadline.String())
|
|
}
|
|
sq := storage.NewSearchQuery(accountID, projectID, 0, 0, nil, 0)
|
|
labels, isPartial, err := LabelNames(qt, denyPartialResponse, sq, 0, deadline)
|
|
if err != nil {
|
|
return nil, false, err
|
|
}
|
|
// Substitute "__name__" with "name" for Graphite compatibility
|
|
for i := range labels {
|
|
if labels[i] != "__name__" {
|
|
continue
|
|
}
|
|
// Prevent from duplicate `name` tag.
|
|
// See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/942
|
|
if hasString(labels, "name") {
|
|
labels = append(labels[:i], labels[i+1:]...)
|
|
} else {
|
|
labels[i] = "name"
|
|
sort.Strings(labels)
|
|
}
|
|
break
|
|
}
|
|
if len(filter) > 0 {
|
|
labels, err = applyGraphiteRegexpFilter(filter, labels)
|
|
if err != nil {
|
|
return nil, false, err
|
|
}
|
|
}
|
|
if limit > 0 && limit < len(labels) {
|
|
labels = labels[:limit]
|
|
}
|
|
return labels, isPartial, nil
|
|
}
|
|
|
|
func hasString(a []string, s string) bool {
|
|
for _, x := range a {
|
|
if x == s {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
// LabelValues returns label values matching the given labelName and sq until the given deadline.
|
|
func LabelValues(qt *querytracer.Tracer, denyPartialResponse bool, labelName string, sq *storage.SearchQuery, maxLabelValues int, deadline searchutils.Deadline) ([]string, bool, error) {
|
|
qt = qt.NewChild("get values for label %s: %s", labelName, sq)
|
|
defer qt.Done()
|
|
if deadline.Exceeded() {
|
|
return nil, false, fmt.Errorf("timeout exceeded before starting the query processing: %s", deadline.String())
|
|
}
|
|
requestData := sq.Marshal(nil)
|
|
|
|
// Send the query to all the storage nodes in parallel.
|
|
type nodeResult struct {
|
|
labelValues []string
|
|
err error
|
|
}
|
|
snr := startStorageNodesRequest(qt, denyPartialResponse, func(qt *querytracer.Tracer, idx int, sn *storageNode) interface{} {
|
|
sn.labelValuesRequests.Inc()
|
|
labelValues, err := sn.getLabelValues(qt, labelName, requestData, maxLabelValues, deadline)
|
|
if err != nil {
|
|
sn.labelValuesErrors.Inc()
|
|
err = fmt.Errorf("cannot get label values from vmstorage %s: %w", sn.connPool.Addr(), err)
|
|
}
|
|
return &nodeResult{
|
|
labelValues: labelValues,
|
|
err: err,
|
|
}
|
|
})
|
|
|
|
// Collect results
|
|
var labelValues []string
|
|
isPartial, err := snr.collectResults(partialLabelValuesResults, func(result interface{}) error {
|
|
nr := result.(*nodeResult)
|
|
if nr.err != nil {
|
|
return nr.err
|
|
}
|
|
labelValues = append(labelValues, nr.labelValues...)
|
|
return nil
|
|
})
|
|
qt.Printf("get %d non-duplicated label values", len(labelValues))
|
|
if err != nil {
|
|
return nil, isPartial, fmt.Errorf("cannot fetch label values from vmstorage nodes: %w", err)
|
|
}
|
|
|
|
// Deduplicate label values
|
|
labelValues = deduplicateStrings(labelValues)
|
|
qt.Printf("get %d unique label values after de-duplication", len(labelValues))
|
|
// Sort labelValues like Prometheus does
|
|
if maxLabelValues > 0 && maxLabelValues < len(labelValues) {
|
|
labelValues = labelValues[:maxLabelValues]
|
|
}
|
|
sort.Strings(labelValues)
|
|
qt.Printf("sort %d label values", len(labelValues))
|
|
return labelValues, isPartial, nil
|
|
}
|
|
|
|
// GraphiteTagValues returns tag values for the given tagName until the given deadline.
|
|
func GraphiteTagValues(qt *querytracer.Tracer, accountID, projectID uint32, denyPartialResponse bool, tagName, filter string, limit int, deadline searchutils.Deadline) ([]string, bool, error) {
|
|
qt = qt.NewChild("get graphite tag values for tagName=%s, filter=%s, limit=%d", tagName, filter, limit)
|
|
defer qt.Done()
|
|
if deadline.Exceeded() {
|
|
return nil, false, fmt.Errorf("timeout exceeded before starting the query processing: %s", deadline.String())
|
|
}
|
|
if tagName == "name" {
|
|
tagName = ""
|
|
}
|
|
sq := storage.NewSearchQuery(accountID, projectID, 0, 0, nil, 0)
|
|
tagValues, isPartial, err := LabelValues(qt, denyPartialResponse, tagName, sq, 0, deadline)
|
|
if err != nil {
|
|
return nil, false, err
|
|
}
|
|
if len(filter) > 0 {
|
|
tagValues, err = applyGraphiteRegexpFilter(filter, tagValues)
|
|
if err != nil {
|
|
return nil, false, err
|
|
}
|
|
}
|
|
if limit > 0 && limit < len(tagValues) {
|
|
tagValues = tagValues[:limit]
|
|
}
|
|
return tagValues, isPartial, nil
|
|
}
|
|
|
|
// TagValueSuffixes returns tag value suffixes for the given tagKey and the given tagValuePrefix.
|
|
//
|
|
// It can be used for implementing https://graphite-api.readthedocs.io/en/latest/api.html#metrics-find
|
|
func TagValueSuffixes(qt *querytracer.Tracer, accountID, projectID uint32, denyPartialResponse bool, tr storage.TimeRange, tagKey, tagValuePrefix string,
|
|
delimiter byte, deadline searchutils.Deadline) ([]string, bool, error) {
|
|
qt = qt.NewChild("get tag value suffixes for tagKey=%s, tagValuePrefix=%s, timeRange=%s", tagKey, tagValuePrefix, &tr)
|
|
defer qt.Done()
|
|
if deadline.Exceeded() {
|
|
return nil, false, fmt.Errorf("timeout exceeded before starting the query processing: %s", deadline.String())
|
|
}
|
|
// Send the query to all the storage nodes in parallel.
|
|
type nodeResult struct {
|
|
suffixes []string
|
|
err error
|
|
}
|
|
snr := startStorageNodesRequest(qt, denyPartialResponse, func(qt *querytracer.Tracer, idx int, sn *storageNode) interface{} {
|
|
sn.tagValueSuffixesRequests.Inc()
|
|
suffixes, err := sn.getTagValueSuffixes(qt, accountID, projectID, tr, tagKey, tagValuePrefix, delimiter, deadline)
|
|
if err != nil {
|
|
sn.tagValueSuffixesErrors.Inc()
|
|
err = fmt.Errorf("cannot get tag value suffixes for tr=%s, tagKey=%q, tagValuePrefix=%q, delimiter=%c from vmstorage %s: %w",
|
|
tr.String(), tagKey, tagValuePrefix, delimiter, sn.connPool.Addr(), err)
|
|
}
|
|
return &nodeResult{
|
|
suffixes: suffixes,
|
|
err: err,
|
|
}
|
|
})
|
|
|
|
// Collect results
|
|
m := make(map[string]struct{})
|
|
isPartial, err := snr.collectResults(partialTagValueSuffixesResults, func(result interface{}) error {
|
|
nr := result.(*nodeResult)
|
|
if nr.err != nil {
|
|
return nr.err
|
|
}
|
|
for _, suffix := range nr.suffixes {
|
|
m[suffix] = struct{}{}
|
|
}
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return nil, isPartial, fmt.Errorf("cannot fetch tag value suffixes from vmstorage nodes: %w", err)
|
|
}
|
|
|
|
suffixes := make([]string, 0, len(m))
|
|
for suffix := range m {
|
|
suffixes = append(suffixes, suffix)
|
|
}
|
|
return suffixes, isPartial, nil
|
|
}
|
|
|
|
func deduplicateStrings(a []string) []string {
|
|
m := make(map[string]bool, len(a))
|
|
for _, s := range a {
|
|
m[s] = true
|
|
}
|
|
a = a[:0]
|
|
for s := range m {
|
|
a = append(a, s)
|
|
}
|
|
return a
|
|
}
|
|
|
|
// TSDBStatus returns tsdb status according to https://prometheus.io/docs/prometheus/latest/querying/api/#tsdb-stats
|
|
//
|
|
// It accepts aribtrary filters on time series in sq.
|
|
func TSDBStatus(qt *querytracer.Tracer, denyPartialResponse bool, sq *storage.SearchQuery, focusLabel string, topN int, deadline searchutils.Deadline) (*storage.TSDBStatus, bool, error) {
|
|
qt = qt.NewChild("get tsdb stats: %s, focusLabel=%q, topN=%d", sq, focusLabel, topN)
|
|
defer qt.Done()
|
|
if deadline.Exceeded() {
|
|
return nil, false, fmt.Errorf("timeout exceeded before starting the query processing: %s", deadline.String())
|
|
}
|
|
requestData := sq.Marshal(nil)
|
|
// Send the query to all the storage nodes in parallel.
|
|
type nodeResult struct {
|
|
status *storage.TSDBStatus
|
|
err error
|
|
}
|
|
snr := startStorageNodesRequest(qt, denyPartialResponse, func(qt *querytracer.Tracer, idx int, sn *storageNode) interface{} {
|
|
sn.tsdbStatusRequests.Inc()
|
|
status, err := sn.getTSDBStatus(qt, requestData, focusLabel, topN, deadline)
|
|
if err != nil {
|
|
sn.tsdbStatusErrors.Inc()
|
|
err = fmt.Errorf("cannot obtain tsdb status from vmstorage %s: %w", sn.connPool.Addr(), err)
|
|
}
|
|
return &nodeResult{
|
|
status: status,
|
|
err: err,
|
|
}
|
|
})
|
|
|
|
// Collect results.
|
|
var statuses []*storage.TSDBStatus
|
|
isPartial, err := snr.collectResults(partialTSDBStatusResults, func(result interface{}) error {
|
|
nr := result.(*nodeResult)
|
|
if nr.err != nil {
|
|
return nr.err
|
|
}
|
|
statuses = append(statuses, nr.status)
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return nil, isPartial, fmt.Errorf("cannot fetch tsdb status from vmstorage nodes: %w", err)
|
|
}
|
|
|
|
status := mergeTSDBStatuses(statuses, topN)
|
|
return status, isPartial, nil
|
|
}
|
|
|
|
func mergeTSDBStatuses(statuses []*storage.TSDBStatus, topN int) *storage.TSDBStatus {
|
|
totalSeries := uint64(0)
|
|
totalLabelValuePairs := uint64(0)
|
|
seriesCountByMetricName := make(map[string]uint64)
|
|
seriesCountByLabelName := make(map[string]uint64)
|
|
seriesCountByFocusLabelValue := make(map[string]uint64)
|
|
seriesCountByLabelValuePair := make(map[string]uint64)
|
|
labelValueCountByLabelName := make(map[string]uint64)
|
|
for _, st := range statuses {
|
|
totalSeries += st.TotalSeries
|
|
totalLabelValuePairs += st.TotalLabelValuePairs
|
|
for _, e := range st.SeriesCountByMetricName {
|
|
seriesCountByMetricName[e.Name] += e.Count
|
|
}
|
|
for _, e := range st.SeriesCountByLabelName {
|
|
seriesCountByLabelName[e.Name] += e.Count
|
|
}
|
|
for _, e := range st.SeriesCountByFocusLabelValue {
|
|
seriesCountByFocusLabelValue[e.Name] += e.Count
|
|
}
|
|
for _, e := range st.SeriesCountByLabelValuePair {
|
|
seriesCountByLabelValuePair[e.Name] += e.Count
|
|
}
|
|
for _, e := range st.LabelValueCountByLabelName {
|
|
// The same label values may exist in multiple vmstorage nodes.
|
|
// So select the maximum label values count in order to get the value close to reality.
|
|
if e.Count > labelValueCountByLabelName[e.Name] {
|
|
labelValueCountByLabelName[e.Name] = e.Count
|
|
}
|
|
}
|
|
}
|
|
return &storage.TSDBStatus{
|
|
TotalSeries: totalSeries,
|
|
TotalLabelValuePairs: totalLabelValuePairs,
|
|
SeriesCountByMetricName: toTopHeapEntries(seriesCountByMetricName, topN),
|
|
SeriesCountByLabelName: toTopHeapEntries(seriesCountByLabelName, topN),
|
|
SeriesCountByFocusLabelValue: toTopHeapEntries(seriesCountByFocusLabelValue, topN),
|
|
SeriesCountByLabelValuePair: toTopHeapEntries(seriesCountByLabelValuePair, topN),
|
|
LabelValueCountByLabelName: toTopHeapEntries(labelValueCountByLabelName, topN),
|
|
}
|
|
}
|
|
|
|
func toTopHeapEntries(m map[string]uint64, topN int) []storage.TopHeapEntry {
|
|
a := make([]storage.TopHeapEntry, 0, len(m))
|
|
for name, count := range m {
|
|
a = append(a, storage.TopHeapEntry{
|
|
Name: name,
|
|
Count: count,
|
|
})
|
|
}
|
|
sort.Slice(a, func(i, j int) bool {
|
|
if a[i].Count != a[j].Count {
|
|
return a[i].Count > a[j].Count
|
|
}
|
|
return a[i].Name < a[j].Name
|
|
})
|
|
if len(a) > topN {
|
|
a = a[:topN]
|
|
}
|
|
return a
|
|
}
|
|
|
|
// SeriesCount returns the number of unique series.
|
|
func SeriesCount(qt *querytracer.Tracer, accountID, projectID uint32, denyPartialResponse bool, deadline searchutils.Deadline) (uint64, bool, error) {
|
|
qt = qt.NewChild("get series count")
|
|
defer qt.Done()
|
|
if deadline.Exceeded() {
|
|
return 0, false, fmt.Errorf("timeout exceeded before starting the query processing: %s", deadline.String())
|
|
}
|
|
// Send the query to all the storage nodes in parallel.
|
|
type nodeResult struct {
|
|
n uint64
|
|
err error
|
|
}
|
|
snr := startStorageNodesRequest(qt, denyPartialResponse, func(qt *querytracer.Tracer, idx int, sn *storageNode) interface{} {
|
|
sn.seriesCountRequests.Inc()
|
|
n, err := sn.getSeriesCount(qt, accountID, projectID, deadline)
|
|
if err != nil {
|
|
sn.seriesCountErrors.Inc()
|
|
err = fmt.Errorf("cannot get series count from vmstorage %s: %w", sn.connPool.Addr(), err)
|
|
}
|
|
return &nodeResult{
|
|
n: n,
|
|
err: err,
|
|
}
|
|
})
|
|
|
|
// Collect results
|
|
var n uint64
|
|
isPartial, err := snr.collectResults(partialSeriesCountResults, func(result interface{}) error {
|
|
nr := result.(*nodeResult)
|
|
if nr.err != nil {
|
|
return nr.err
|
|
}
|
|
n += nr.n
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return 0, isPartial, fmt.Errorf("cannot fetch series count from vmstorage nodes: %w", err)
|
|
}
|
|
return n, isPartial, nil
|
|
}
|
|
|
|
type tmpBlocksFileWrapper struct {
|
|
mu sync.Mutex
|
|
tbf *tmpBlocksFile
|
|
m map[string][]tmpBlockAddr
|
|
orderedMetricNames []string
|
|
}
|
|
|
|
func (tbfw *tmpBlocksFileWrapper) RegisterEmptyBlock(mb *storage.MetricBlock) {
|
|
metricName := mb.MetricName
|
|
tbfw.mu.Lock()
|
|
if addrs := tbfw.m[string(metricName)]; addrs == nil {
|
|
// An optimization for big number of time series with long names: store only a single copy of metricNameStr
|
|
// in both tbfw.orderedMetricNames and tbfw.m.
|
|
tbfw.orderedMetricNames = append(tbfw.orderedMetricNames, string(metricName))
|
|
tbfw.m[tbfw.orderedMetricNames[len(tbfw.orderedMetricNames)-1]] = []tmpBlockAddr{{}}
|
|
}
|
|
tbfw.mu.Unlock()
|
|
}
|
|
|
|
func (tbfw *tmpBlocksFileWrapper) RegisterAndWriteBlock(mb *storage.MetricBlock) error {
|
|
bb := tmpBufPool.Get()
|
|
bb.B = storage.MarshalBlock(bb.B[:0], &mb.Block)
|
|
tbfw.mu.Lock()
|
|
addr, err := tbfw.tbf.WriteBlockData(bb.B)
|
|
tmpBufPool.Put(bb)
|
|
if err == nil {
|
|
metricName := mb.MetricName
|
|
addrs := tbfw.m[string(metricName)]
|
|
addrs = append(addrs, addr)
|
|
if len(addrs) > 1 {
|
|
tbfw.m[string(metricName)] = addrs
|
|
} else {
|
|
// An optimization for big number of time series with long names: store only a single copy of metricNameStr
|
|
// in both tbfw.orderedMetricNames and tbfw.m.
|
|
tbfw.orderedMetricNames = append(tbfw.orderedMetricNames, string(metricName))
|
|
tbfw.m[tbfw.orderedMetricNames[len(tbfw.orderedMetricNames)-1]] = addrs
|
|
}
|
|
}
|
|
tbfw.mu.Unlock()
|
|
return err
|
|
}
|
|
|
|
var metricNamePool = &sync.Pool{
|
|
New: func() interface{} {
|
|
return &storage.MetricName{}
|
|
},
|
|
}
|
|
|
|
// ExportBlocks searches for time series matching sq and calls f for each found block.
|
|
//
|
|
// f is called in parallel from multiple goroutines.
|
|
// It is the responsibility of f to call b.UnmarshalData before reading timestamps and values from the block.
|
|
// It is the responsibility of f to filter blocks according to the given tr.
|
|
func ExportBlocks(qt *querytracer.Tracer, sq *storage.SearchQuery, deadline searchutils.Deadline,
|
|
f func(mn *storage.MetricName, b *storage.Block, tr storage.TimeRange) error) error {
|
|
qt = qt.NewChild("export blocks: %s", sq)
|
|
defer qt.Done()
|
|
if deadline.Exceeded() {
|
|
return fmt.Errorf("timeout exceeded before starting data export: %s", deadline.String())
|
|
}
|
|
tr := storage.TimeRange{
|
|
MinTimestamp: sq.MinTimestamp,
|
|
MaxTimestamp: sq.MaxTimestamp,
|
|
}
|
|
var wg syncwg.WaitGroup
|
|
var stopped uint32
|
|
var blocksRead uint64
|
|
var samples uint64
|
|
processBlock := func(mb *storage.MetricBlock) error {
|
|
wg.Add(1)
|
|
defer wg.Done()
|
|
if atomic.LoadUint32(&stopped) != 0 {
|
|
return nil
|
|
}
|
|
mn := metricNamePool.Get().(*storage.MetricName)
|
|
if err := mn.Unmarshal(mb.MetricName); err != nil {
|
|
return fmt.Errorf("cannot unmarshal metricName: %w", err)
|
|
}
|
|
if err := f(mn, &mb.Block, tr); err != nil {
|
|
return err
|
|
}
|
|
mn.Reset()
|
|
metricNamePool.Put(mn)
|
|
atomic.AddUint64(&blocksRead, 1)
|
|
atomic.AddUint64(&samples, uint64(mb.Block.RowsCount()))
|
|
return nil
|
|
}
|
|
_, err := processSearchQuery(qt, true, sq, processBlock, deadline)
|
|
|
|
// Make sure processBlock isn't called anymore in order to prevent from data races.
|
|
atomic.StoreUint32(&stopped, 1)
|
|
wg.Wait()
|
|
qt.Printf("export blocks=%d, samples=%d", blocksRead, samples)
|
|
|
|
if err != nil {
|
|
return fmt.Errorf("error occured during export: %w", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// SearchMetricNames returns all the metric names matching sq until the given deadline.
|
|
//
|
|
// The returned metric names must be unmarshaled via storage.MetricName.UnmarshalString().
|
|
func SearchMetricNames(qt *querytracer.Tracer, denyPartialResponse bool, sq *storage.SearchQuery, deadline searchutils.Deadline) ([]string, bool, error) {
|
|
qt = qt.NewChild("fetch metric names: %s", sq)
|
|
defer qt.Done()
|
|
if deadline.Exceeded() {
|
|
return nil, false, fmt.Errorf("timeout exceeded before starting to search metric names: %s", deadline.String())
|
|
}
|
|
requestData := sq.Marshal(nil)
|
|
|
|
// Send the query to all the storage nodes in parallel.
|
|
type nodeResult struct {
|
|
metricNames []string
|
|
err error
|
|
}
|
|
snr := startStorageNodesRequest(qt, denyPartialResponse, func(qt *querytracer.Tracer, idx int, sn *storageNode) interface{} {
|
|
sn.searchMetricNamesRequests.Inc()
|
|
metricNames, err := sn.processSearchMetricNames(qt, requestData, deadline)
|
|
if err != nil {
|
|
sn.searchMetricNamesErrors.Inc()
|
|
err = fmt.Errorf("cannot search metric names on vmstorage %s: %w", sn.connPool.Addr(), err)
|
|
}
|
|
return &nodeResult{
|
|
metricNames: metricNames,
|
|
err: err,
|
|
}
|
|
})
|
|
|
|
// Collect results.
|
|
metricNamesMap := make(map[string]struct{})
|
|
isPartial, err := snr.collectResults(partialSearchMetricNamesResults, func(result interface{}) error {
|
|
nr := result.(*nodeResult)
|
|
if nr.err != nil {
|
|
return nr.err
|
|
}
|
|
for _, metricName := range nr.metricNames {
|
|
metricNamesMap[metricName] = struct{}{}
|
|
}
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return nil, isPartial, fmt.Errorf("cannot fetch metric names from vmstorage nodes: %w", err)
|
|
}
|
|
|
|
metricNames := make([]string, len(metricNamesMap))
|
|
for metricName := range metricNamesMap {
|
|
metricNames = append(metricNames, metricName)
|
|
}
|
|
sort.Strings(metricNames)
|
|
qt.Printf("sort %d metric names", len(metricNames))
|
|
return metricNames, isPartial, nil
|
|
}
|
|
|
|
// ProcessSearchQuery performs sq until the given deadline.
|
|
//
|
|
// Results.RunParallel or Results.Cancel must be called on the returned Results.
|
|
func ProcessSearchQuery(qt *querytracer.Tracer, denyPartialResponse bool, sq *storage.SearchQuery, deadline searchutils.Deadline) (*Results, bool, error) {
|
|
qt = qt.NewChild("fetch matching series: %s", sq)
|
|
defer qt.Done()
|
|
if deadline.Exceeded() {
|
|
return nil, false, fmt.Errorf("timeout exceeded before starting the query processing: %s", deadline.String())
|
|
}
|
|
|
|
// Setup search.
|
|
tr := storage.TimeRange{
|
|
MinTimestamp: sq.MinTimestamp,
|
|
MaxTimestamp: sq.MaxTimestamp,
|
|
}
|
|
tbfw := &tmpBlocksFileWrapper{
|
|
tbf: getTmpBlocksFile(),
|
|
m: make(map[string][]tmpBlockAddr),
|
|
}
|
|
var wg syncwg.WaitGroup
|
|
var stopped uint32
|
|
var blocksRead uint64
|
|
var samples uint64
|
|
processBlock := func(mb *storage.MetricBlock) error {
|
|
wg.Add(1)
|
|
defer wg.Done()
|
|
if atomic.LoadUint32(&stopped) != 0 {
|
|
return nil
|
|
}
|
|
atomic.AddUint64(&blocksRead, 1)
|
|
n := atomic.AddUint64(&samples, uint64(mb.Block.RowsCount()))
|
|
if *maxSamplesPerQuery > 0 && n > uint64(*maxSamplesPerQuery) {
|
|
return fmt.Errorf("cannot select more than -search.maxSamplesPerQuery=%d samples; possible solutions: to increase the -search.maxSamplesPerQuery; to reduce time range for the query; to use more specific label filters in order to select lower number of series", *maxSamplesPerQuery)
|
|
}
|
|
if err := tbfw.RegisterAndWriteBlock(mb); err != nil {
|
|
return fmt.Errorf("cannot write MetricBlock to temporary blocks file: %w", err)
|
|
}
|
|
return nil
|
|
}
|
|
isPartial, err := processSearchQuery(qt, denyPartialResponse, sq, processBlock, deadline)
|
|
|
|
// Make sure processBlock isn't called anymore in order to protect from data races.
|
|
atomic.StoreUint32(&stopped, 1)
|
|
wg.Wait()
|
|
|
|
if err != nil {
|
|
putTmpBlocksFile(tbfw.tbf)
|
|
return nil, false, fmt.Errorf("error occured during search: %w", err)
|
|
}
|
|
if err := tbfw.tbf.Finalize(); err != nil {
|
|
putTmpBlocksFile(tbfw.tbf)
|
|
return nil, false, fmt.Errorf("cannot finalize temporary blocks file with %d time series: %w", len(tbfw.m), err)
|
|
}
|
|
qt.Printf("fetch unique series=%d, blocks=%d, samples=%d, bytes=%d", len(tbfw.m), blocksRead, samples, tbfw.tbf.Len())
|
|
|
|
var rss Results
|
|
rss.tr = tr
|
|
rss.deadline = deadline
|
|
rss.tbf = tbfw.tbf
|
|
pts := make([]packedTimeseries, len(tbfw.orderedMetricNames))
|
|
for i, metricName := range tbfw.orderedMetricNames {
|
|
pts[i] = packedTimeseries{
|
|
metricName: metricName,
|
|
addrs: tbfw.m[metricName],
|
|
}
|
|
}
|
|
rss.packedTimeseries = pts
|
|
return &rss, isPartial, nil
|
|
}
|
|
|
|
func processSearchQuery(qt *querytracer.Tracer, denyPartialResponse bool, sq *storage.SearchQuery,
|
|
processBlock func(mb *storage.MetricBlock) error, deadline searchutils.Deadline) (bool, error) {
|
|
requestData := sq.Marshal(nil)
|
|
|
|
// Send the query to all the storage nodes in parallel.
|
|
snr := startStorageNodesRequest(qt, denyPartialResponse, func(qt *querytracer.Tracer, idx int, sn *storageNode) interface{} {
|
|
sn.searchRequests.Inc()
|
|
err := sn.processSearchQuery(qt, requestData, processBlock, deadline)
|
|
if err != nil {
|
|
sn.searchErrors.Inc()
|
|
err = fmt.Errorf("cannot perform search on vmstorage %s: %w", sn.connPool.Addr(), err)
|
|
}
|
|
return &err
|
|
})
|
|
|
|
// Collect results.
|
|
isPartial, err := snr.collectResults(partialSearchResults, func(result interface{}) error {
|
|
errP := result.(*error)
|
|
return *errP
|
|
})
|
|
if err != nil {
|
|
return isPartial, fmt.Errorf("cannot fetch query results from vmstorage nodes: %w", err)
|
|
}
|
|
return isPartial, nil
|
|
}
|
|
|
|
type storageNodesRequest struct {
|
|
denyPartialResponse bool
|
|
resultsCh chan interface{}
|
|
}
|
|
|
|
func startStorageNodesRequest(qt *querytracer.Tracer, denyPartialResponse bool, f func(qt *querytracer.Tracer, idx int, sn *storageNode) interface{}) *storageNodesRequest {
|
|
resultsCh := make(chan interface{}, len(storageNodes))
|
|
for idx, sn := range storageNodes {
|
|
qtChild := qt.NewChild("rpc at vmstorage %s", sn.connPool.Addr())
|
|
go func(idx int, sn *storageNode) {
|
|
result := f(qtChild, idx, sn)
|
|
resultsCh <- result
|
|
qtChild.Done()
|
|
}(idx, sn)
|
|
}
|
|
return &storageNodesRequest{
|
|
denyPartialResponse: denyPartialResponse,
|
|
resultsCh: resultsCh,
|
|
}
|
|
}
|
|
|
|
func (snr *storageNodesRequest) collectAllResults(f func(result interface{}) error) error {
|
|
for i := 0; i < len(storageNodes); i++ {
|
|
result := <-snr.resultsCh
|
|
if err := f(result); err != nil {
|
|
// Immediately return the error to the caller without waiting for responses from other vmstorage nodes -
|
|
// they will be processed in brackground.
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (snr *storageNodesRequest) collectResults(partialResultsCounter *metrics.Counter, f func(result interface{}) error) (bool, error) {
|
|
var errsPartial []error
|
|
resultsCollected := 0
|
|
for i := 0; i < len(storageNodes); i++ {
|
|
// There is no need in timer here, since all the goroutines executing the f function
|
|
// passed to startStorageNodesRequest must be finished until the deadline.
|
|
result := <-snr.resultsCh
|
|
if err := f(result); err != nil {
|
|
var er *errRemote
|
|
if errors.As(err, &er) {
|
|
// Immediately return the error reported by vmstorage to the caller,
|
|
// since such errors usually mean misconfiguration at vmstorage.
|
|
// The misconfiguration must be known by the caller, so it is fixed ASAP.
|
|
return false, err
|
|
}
|
|
errsPartial = append(errsPartial, err)
|
|
if snr.denyPartialResponse && len(errsPartial) >= *replicationFactor {
|
|
// Return the error to the caller if partial responses are denied
|
|
// and the number of partial responses reach -replicationFactor,
|
|
// since this means that the response is partial.
|
|
return false, err
|
|
}
|
|
continue
|
|
}
|
|
resultsCollected++
|
|
if resultsCollected > len(storageNodes)-*replicationFactor {
|
|
// There is no need in waiting for the remaining results,
|
|
// because the collected results contain all the data according to the given -replicationFactor.
|
|
// This should speed up responses when a part of vmstorage nodes are slow and/or temporarily unavailable.
|
|
// See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/711
|
|
//
|
|
// It is expected that cap(snr.resultsCh) == len(storageNodes), otherwise goroutine leak is possible.
|
|
return false, nil
|
|
}
|
|
}
|
|
if len(errsPartial) < *replicationFactor {
|
|
// Assume that the result is full if the the number of failing vmstorage nodes
|
|
// is smaller than the -replicationFactor.
|
|
return false, nil
|
|
}
|
|
if len(errsPartial) == len(storageNodes) {
|
|
// All the vmstorage nodes returned error.
|
|
// Return only the first error, since it has no sense in returning all errors.
|
|
return false, errsPartial[0]
|
|
}
|
|
// Return partial results.
|
|
// This allows gracefully degrade vmselect in the case
|
|
// if a part of vmstorage nodes are temporarily unavailable.
|
|
partialResultsCounter.Inc()
|
|
// Do not return the error, since it may spam logs on busy vmselect
|
|
// serving high amounts of requests.
|
|
partialErrorsLogger.Warnf("%d out of %d vmstorage nodes were unavailable during the query; a sample error: %s", len(errsPartial), len(storageNodes), errsPartial[0])
|
|
return true, nil
|
|
}
|
|
|
|
var partialErrorsLogger = logger.WithThrottler("partialErrors", 10*time.Second)
|
|
|
|
type storageNode struct {
|
|
connPool *netutil.ConnPool
|
|
|
|
// The number of concurrent queries to storageNode.
|
|
concurrentQueries *metrics.Counter
|
|
|
|
// The number of RegisterMetricNames requests to storageNode.
|
|
registerMetricNamesRequests *metrics.Counter
|
|
|
|
// The number of RegisterMetricNames request errors to storageNode.
|
|
registerMetricNamesErrors *metrics.Counter
|
|
|
|
// The number of DeleteSeries requests to storageNode.
|
|
deleteSeriesRequests *metrics.Counter
|
|
|
|
// The number of DeleteSeries request errors to storageNode.
|
|
deleteSeriesErrors *metrics.Counter
|
|
|
|
// The number of requests to labelNames.
|
|
labelNamesRequests *metrics.Counter
|
|
|
|
// The number of errors during requests to labelNames.
|
|
labelNamesErrors *metrics.Counter
|
|
|
|
// The number of requests to labelValues.
|
|
labelValuesRequests *metrics.Counter
|
|
|
|
// The number of errors during requests to labelValuesOnTimeRange.
|
|
labelValuesErrors *metrics.Counter
|
|
|
|
// The number of requests to tagValueSuffixes.
|
|
tagValueSuffixesRequests *metrics.Counter
|
|
|
|
// The number of errors during requests to tagValueSuffixes.
|
|
tagValueSuffixesErrors *metrics.Counter
|
|
|
|
// The number of requests to tsdb status.
|
|
tsdbStatusRequests *metrics.Counter
|
|
|
|
// The number of errors during requests to tsdb status.
|
|
tsdbStatusErrors *metrics.Counter
|
|
|
|
// The number of requests to seriesCount.
|
|
seriesCountRequests *metrics.Counter
|
|
|
|
// The number of errors during requests to seriesCount.
|
|
seriesCountErrors *metrics.Counter
|
|
|
|
// The number of searchMetricNames requests to storageNode.
|
|
searchMetricNamesRequests *metrics.Counter
|
|
|
|
// The number of searchMetricNames errors to storageNode.
|
|
searchMetricNamesErrors *metrics.Counter
|
|
|
|
// The number of search requests to storageNode.
|
|
searchRequests *metrics.Counter
|
|
|
|
// The number of search request errors to storageNode.
|
|
searchErrors *metrics.Counter
|
|
|
|
// The number of metric blocks read.
|
|
metricBlocksRead *metrics.Counter
|
|
|
|
// The number of read metric rows.
|
|
metricRowsRead *metrics.Counter
|
|
}
|
|
|
|
func (sn *storageNode) registerMetricNames(qt *querytracer.Tracer, mrs []storage.MetricRow, deadline searchutils.Deadline) error {
|
|
if len(mrs) == 0 {
|
|
return nil
|
|
}
|
|
f := func(bc *handshake.BufferedConn) error {
|
|
return sn.registerMetricNamesOnConn(bc, mrs)
|
|
}
|
|
return sn.execOnConnWithPossibleRetry(qt, "registerMetricNames_v3", f, deadline)
|
|
}
|
|
|
|
func (sn *storageNode) deleteSeries(qt *querytracer.Tracer, requestData []byte, deadline searchutils.Deadline) (int, error) {
|
|
var deletedCount int
|
|
f := func(bc *handshake.BufferedConn) error {
|
|
n, err := sn.deleteSeriesOnConn(bc, requestData)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
deletedCount = n
|
|
return nil
|
|
}
|
|
if err := sn.execOnConnWithPossibleRetry(qt, "deleteSeries_v5", f, deadline); err != nil {
|
|
return 0, err
|
|
}
|
|
return deletedCount, nil
|
|
}
|
|
|
|
func (sn *storageNode) getLabelNames(qt *querytracer.Tracer, requestData []byte, maxLabelNames int, deadline searchutils.Deadline) ([]string, error) {
|
|
var labels []string
|
|
f := func(bc *handshake.BufferedConn) error {
|
|
ls, err := sn.getLabelNamesOnConn(bc, requestData, maxLabelNames)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
labels = ls
|
|
return nil
|
|
}
|
|
if err := sn.execOnConnWithPossibleRetry(qt, "labelNames_v5", f, deadline); err != nil {
|
|
return nil, err
|
|
}
|
|
return labels, nil
|
|
}
|
|
|
|
func (sn *storageNode) getLabelValues(qt *querytracer.Tracer, labelName string, requestData []byte, maxLabelValues int, deadline searchutils.Deadline) ([]string, error) {
|
|
var labelValues []string
|
|
f := func(bc *handshake.BufferedConn) error {
|
|
lvs, err := sn.getLabelValuesOnConn(bc, labelName, requestData, maxLabelValues)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
labelValues = lvs
|
|
return nil
|
|
}
|
|
if err := sn.execOnConnWithPossibleRetry(qt, "labelValues_v5", f, deadline); err != nil {
|
|
return nil, err
|
|
}
|
|
return labelValues, nil
|
|
}
|
|
|
|
func (sn *storageNode) getTagValueSuffixes(qt *querytracer.Tracer, accountID, projectID uint32, tr storage.TimeRange, tagKey, tagValuePrefix string,
|
|
delimiter byte, deadline searchutils.Deadline) ([]string, error) {
|
|
var suffixes []string
|
|
f := func(bc *handshake.BufferedConn) error {
|
|
ss, err := sn.getTagValueSuffixesOnConn(bc, accountID, projectID, tr, tagKey, tagValuePrefix, delimiter)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
suffixes = ss
|
|
return nil
|
|
}
|
|
if err := sn.execOnConnWithPossibleRetry(qt, "tagValueSuffixes_v3", f, deadline); err != nil {
|
|
return nil, err
|
|
}
|
|
return suffixes, nil
|
|
}
|
|
|
|
func (sn *storageNode) getTSDBStatus(qt *querytracer.Tracer, requestData []byte, focusLabel string, topN int, deadline searchutils.Deadline) (*storage.TSDBStatus, error) {
|
|
var status *storage.TSDBStatus
|
|
f := func(bc *handshake.BufferedConn) error {
|
|
st, err := sn.getTSDBStatusOnConn(bc, requestData, focusLabel, topN)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
status = st
|
|
return nil
|
|
}
|
|
if err := sn.execOnConnWithPossibleRetry(qt, "tsdbStatus_v5", f, deadline); err != nil {
|
|
return nil, err
|
|
}
|
|
return status, nil
|
|
}
|
|
|
|
func (sn *storageNode) getSeriesCount(qt *querytracer.Tracer, accountID, projectID uint32, deadline searchutils.Deadline) (uint64, error) {
|
|
var n uint64
|
|
f := func(bc *handshake.BufferedConn) error {
|
|
nn, err := sn.getSeriesCountOnConn(bc, accountID, projectID)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
n = nn
|
|
return nil
|
|
}
|
|
if err := sn.execOnConnWithPossibleRetry(qt, "seriesCount_v4", f, deadline); err != nil {
|
|
return 0, err
|
|
}
|
|
return n, nil
|
|
}
|
|
|
|
func (sn *storageNode) processSearchMetricNames(qt *querytracer.Tracer, requestData []byte, deadline searchutils.Deadline) ([]string, error) {
|
|
var metricNames []string
|
|
f := func(bc *handshake.BufferedConn) error {
|
|
mns, err := sn.processSearchMetricNamesOnConn(bc, requestData)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
metricNames = mns
|
|
return nil
|
|
}
|
|
if err := sn.execOnConnWithPossibleRetry(qt, "searchMetricNames_v3", f, deadline); err != nil {
|
|
return nil, err
|
|
}
|
|
return metricNames, nil
|
|
}
|
|
|
|
func (sn *storageNode) processSearchQuery(qt *querytracer.Tracer, requestData []byte, processBlock func(mb *storage.MetricBlock) error, deadline searchutils.Deadline) error {
|
|
f := func(bc *handshake.BufferedConn) error {
|
|
if err := sn.processSearchQueryOnConn(bc, requestData, processBlock); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
return sn.execOnConnWithPossibleRetry(qt, "search_v7", f, deadline)
|
|
}
|
|
|
|
func (sn *storageNode) execOnConnWithPossibleRetry(qt *querytracer.Tracer, funcName string, f func(bc *handshake.BufferedConn) error, deadline searchutils.Deadline) error {
|
|
qtChild := qt.NewChild("rpc call %s()", funcName)
|
|
err := sn.execOnConn(qtChild, funcName, f, deadline)
|
|
qtChild.Done()
|
|
if err == nil {
|
|
return nil
|
|
}
|
|
var er *errRemote
|
|
var ne net.Error
|
|
if errors.As(err, &er) || errors.As(err, &ne) && ne.Timeout() {
|
|
// There is no sense in repeating the query on errors induced by vmstorage (errRemote) or on network timeout errors.
|
|
return err
|
|
}
|
|
// Repeat the query in the hope the error was temporary.
|
|
qtChild = qt.NewChild("retry rpc call %s() after error", funcName)
|
|
err = sn.execOnConn(qtChild, funcName, f, deadline)
|
|
qtChild.Done()
|
|
return err
|
|
}
|
|
|
|
func (sn *storageNode) execOnConn(qt *querytracer.Tracer, funcName string, f func(bc *handshake.BufferedConn) error, deadline searchutils.Deadline) error {
|
|
sn.concurrentQueries.Inc()
|
|
defer sn.concurrentQueries.Dec()
|
|
|
|
d := time.Unix(int64(deadline.Deadline()), 0)
|
|
nowSecs := fasttime.UnixTimestamp()
|
|
currentTime := time.Unix(int64(nowSecs), 0)
|
|
timeout := d.Sub(currentTime)
|
|
if timeout <= 0 {
|
|
return fmt.Errorf("request timeout reached: %s", deadline.String())
|
|
}
|
|
bc, err := sn.connPool.Get()
|
|
if err != nil {
|
|
return fmt.Errorf("cannot obtain connection from a pool: %w", err)
|
|
}
|
|
// Extend the connection deadline by 2 seconds, so the remote storage could return `timeout` error
|
|
// without the need to break the connection.
|
|
connDeadline := d.Add(2 * time.Second)
|
|
if err := bc.SetDeadline(connDeadline); err != nil {
|
|
_ = bc.Close()
|
|
logger.Panicf("FATAL: cannot set connection deadline: %s", err)
|
|
}
|
|
if err := writeBytes(bc, []byte(funcName)); err != nil {
|
|
// Close the connection instead of returning it to the pool,
|
|
// since it may be broken.
|
|
_ = bc.Close()
|
|
return fmt.Errorf("cannot send funcName=%q to the server: %w", funcName, err)
|
|
}
|
|
|
|
// Send query trace flag
|
|
traceEnabled := qt.Enabled()
|
|
if err := writeBool(bc, traceEnabled); err != nil {
|
|
// Close the connection instead of returning it to the pool,
|
|
// since it may be broken.
|
|
_ = bc.Close()
|
|
return fmt.Errorf("cannot send traceEnabled=%v for funcName=%q to the server: %w", traceEnabled, funcName, err)
|
|
}
|
|
// Send the remaining timeout instead of deadline to remote server, since it may have different time.
|
|
timeoutSecs := uint32(timeout.Seconds() + 1)
|
|
if err := writeUint32(bc, timeoutSecs); err != nil {
|
|
// Close the connection instead of returning it to the pool,
|
|
// since it may be broken.
|
|
_ = bc.Close()
|
|
return fmt.Errorf("cannot send timeout=%d for funcName=%q to the server: %w", timeout, funcName, err)
|
|
}
|
|
// Execute the rpc function.
|
|
if err := f(bc); err != nil {
|
|
remoteAddr := bc.RemoteAddr()
|
|
var er *errRemote
|
|
if errors.As(err, &er) {
|
|
// Remote error. The connection may be re-used. Return it to the pool.
|
|
_ = readTrace(qt, bc)
|
|
sn.connPool.Put(bc)
|
|
} else {
|
|
// Local error.
|
|
// Close the connection instead of returning it to the pool,
|
|
// since it may be broken.
|
|
_ = bc.Close()
|
|
}
|
|
if deadline.Exceeded() {
|
|
return fmt.Errorf("cannot execute funcName=%q on vmstorage %q with timeout %s: %w", funcName, remoteAddr, deadline.String(), err)
|
|
}
|
|
return fmt.Errorf("cannot execute funcName=%q on vmstorage %q: %w", funcName, remoteAddr, err)
|
|
}
|
|
|
|
// Read trace from the response
|
|
if err := readTrace(qt, bc); err != nil {
|
|
// Close the connection instead of returning it to the pool,
|
|
// since it may be broken.
|
|
_ = bc.Close()
|
|
return err
|
|
}
|
|
// Return the connection back to the pool, assuming it is healthy.
|
|
sn.connPool.Put(bc)
|
|
return nil
|
|
}
|
|
|
|
func readTrace(qt *querytracer.Tracer, bc *handshake.BufferedConn) error {
|
|
bb := traceJSONBufPool.Get()
|
|
var err error
|
|
bb.B, err = readBytes(bb.B[:0], bc, maxTraceJSONSize)
|
|
if err != nil {
|
|
return fmt.Errorf("cannot read trace from the server: %w", err)
|
|
}
|
|
if err := qt.AddJSON(bb.B); err != nil {
|
|
return fmt.Errorf("cannot parse trace read from the server: %w", err)
|
|
}
|
|
traceJSONBufPool.Put(bb)
|
|
return nil
|
|
}
|
|
|
|
var traceJSONBufPool bytesutil.ByteBufferPool
|
|
|
|
const maxTraceJSONSize = 1024 * 1024
|
|
|
|
type errRemote struct {
|
|
msg string
|
|
}
|
|
|
|
func (er *errRemote) Error() string {
|
|
return er.msg
|
|
}
|
|
|
|
func newErrRemote(buf []byte) error {
|
|
err := &errRemote{
|
|
msg: string(buf),
|
|
}
|
|
if !strings.Contains(err.msg, "denyQueriesOutsideRetention") {
|
|
return err
|
|
}
|
|
return &httpserver.ErrorWithStatusCode{
|
|
Err: err,
|
|
StatusCode: http.StatusServiceUnavailable,
|
|
}
|
|
}
|
|
|
|
func (sn *storageNode) registerMetricNamesOnConn(bc *handshake.BufferedConn, mrs []storage.MetricRow) error {
|
|
// Send the request to sn.
|
|
if err := writeUint64(bc, uint64(len(mrs))); err != nil {
|
|
return fmt.Errorf("cannot send metricsCount to conn: %w", err)
|
|
}
|
|
for i, mr := range mrs {
|
|
if err := writeBytes(bc, mr.MetricNameRaw); err != nil {
|
|
return fmt.Errorf("cannot send MetricNameRaw #%d to conn: %w", i+1, err)
|
|
}
|
|
if err := writeUint64(bc, uint64(mr.Timestamp)); err != nil {
|
|
return fmt.Errorf("cannot send Timestamp #%d to conn: %w", i+1, err)
|
|
}
|
|
}
|
|
if err := bc.Flush(); err != nil {
|
|
return fmt.Errorf("cannot flush registerMetricNames request to conn: %w", err)
|
|
}
|
|
|
|
// Read response error.
|
|
buf, err := readBytes(nil, bc, maxErrorMessageSize)
|
|
if err != nil {
|
|
return fmt.Errorf("cannot read error message: %w", err)
|
|
}
|
|
if len(buf) > 0 {
|
|
return newErrRemote(buf)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (sn *storageNode) deleteSeriesOnConn(bc *handshake.BufferedConn, requestData []byte) (int, error) {
|
|
// Send the request to sn
|
|
if err := writeBytes(bc, requestData); err != nil {
|
|
return 0, fmt.Errorf("cannot send deleteSeries request to conn: %w", err)
|
|
}
|
|
if err := bc.Flush(); err != nil {
|
|
return 0, fmt.Errorf("cannot flush deleteSeries request to conn: %w", err)
|
|
}
|
|
|
|
// Read response error.
|
|
buf, err := readBytes(nil, bc, maxErrorMessageSize)
|
|
if err != nil {
|
|
return 0, fmt.Errorf("cannot read error message: %w", err)
|
|
}
|
|
if len(buf) > 0 {
|
|
return 0, newErrRemote(buf)
|
|
}
|
|
|
|
// Read deletedCount
|
|
deletedCount, err := readUint64(bc)
|
|
if err != nil {
|
|
return 0, fmt.Errorf("cannot read deletedCount value: %w", err)
|
|
}
|
|
return int(deletedCount), nil
|
|
}
|
|
|
|
const maxLabelNameSize = 16 * 1024 * 1024
|
|
|
|
func (sn *storageNode) getLabelNamesOnConn(bc *handshake.BufferedConn, requestData []byte, maxLabelNames int) ([]string, error) {
|
|
// Send the request to sn.
|
|
if err := writeBytes(bc, requestData); err != nil {
|
|
return nil, fmt.Errorf("cannot write requestData: %w", err)
|
|
}
|
|
if err := writeLimit(bc, maxLabelNames); err != nil {
|
|
return nil, fmt.Errorf("cannot write maxLabelNames=%d: %w", maxLabelNames, err)
|
|
}
|
|
if err := bc.Flush(); err != nil {
|
|
return nil, fmt.Errorf("cannot flush request to conn: %w", err)
|
|
}
|
|
|
|
// Read response error.
|
|
buf, err := readBytes(nil, bc, maxErrorMessageSize)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot read error message: %w", err)
|
|
}
|
|
if len(buf) > 0 {
|
|
return nil, newErrRemote(buf)
|
|
}
|
|
|
|
// Read response
|
|
var labels []string
|
|
for {
|
|
buf, err = readBytes(buf[:0], bc, maxLabelNameSize)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot read labels: %w", err)
|
|
}
|
|
if len(buf) == 0 {
|
|
// Reached the end of the response
|
|
return labels, nil
|
|
}
|
|
labels = append(labels, string(buf))
|
|
}
|
|
}
|
|
|
|
const maxLabelValueSize = 16 * 1024 * 1024
|
|
|
|
func (sn *storageNode) getLabelValuesOnConn(bc *handshake.BufferedConn, labelName string, requestData []byte, maxLabelValues int) ([]string, error) {
|
|
// Send the request to sn.
|
|
if err := writeBytes(bc, []byte(labelName)); err != nil {
|
|
return nil, fmt.Errorf("cannot send labelName=%q to conn: %w", labelName, err)
|
|
}
|
|
if err := writeBytes(bc, requestData); err != nil {
|
|
return nil, fmt.Errorf("cannot write requestData: %w", err)
|
|
}
|
|
if err := writeLimit(bc, maxLabelValues); err != nil {
|
|
return nil, fmt.Errorf("cannot write maxLabelValues=%d: %w", maxLabelValues, err)
|
|
}
|
|
if err := bc.Flush(); err != nil {
|
|
return nil, fmt.Errorf("cannot flush labelName to conn: %w", err)
|
|
}
|
|
|
|
// Read response error.
|
|
buf, err := readBytes(nil, bc, maxErrorMessageSize)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot read error message: %w", err)
|
|
}
|
|
if len(buf) > 0 {
|
|
return nil, newErrRemote(buf)
|
|
}
|
|
|
|
// Read response
|
|
labelValues, _, err := readLabelValues(buf, bc)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return labelValues, nil
|
|
}
|
|
|
|
func readLabelValues(buf []byte, bc *handshake.BufferedConn) ([]string, []byte, error) {
|
|
var labelValues []string
|
|
for {
|
|
var err error
|
|
buf, err = readBytes(buf[:0], bc, maxLabelValueSize)
|
|
if err != nil {
|
|
return nil, buf, fmt.Errorf("cannot read labelValue: %w", err)
|
|
}
|
|
if len(buf) == 0 {
|
|
// Reached the end of the response
|
|
return labelValues, buf, nil
|
|
}
|
|
labelValues = append(labelValues, string(buf))
|
|
}
|
|
}
|
|
|
|
func (sn *storageNode) getTagValueSuffixesOnConn(bc *handshake.BufferedConn, accountID, projectID uint32,
|
|
tr storage.TimeRange, tagKey, tagValuePrefix string, delimiter byte) ([]string, error) {
|
|
// Send the request to sn.
|
|
if err := sendAccountIDProjectID(bc, accountID, projectID); err != nil {
|
|
return nil, err
|
|
}
|
|
if err := writeTimeRange(bc, tr); err != nil {
|
|
return nil, err
|
|
}
|
|
if err := writeBytes(bc, []byte(tagKey)); err != nil {
|
|
return nil, fmt.Errorf("cannot send tagKey=%q to conn: %w", tagKey, err)
|
|
}
|
|
if err := writeBytes(bc, []byte(tagValuePrefix)); err != nil {
|
|
return nil, fmt.Errorf("cannot send tagValuePrefix=%q to conn: %w", tagValuePrefix, err)
|
|
}
|
|
if err := writeByte(bc, delimiter); err != nil {
|
|
return nil, fmt.Errorf("cannot send delimiter=%c to conn: %w", delimiter, err)
|
|
}
|
|
if err := bc.Flush(); err != nil {
|
|
return nil, fmt.Errorf("cannot flush request to conn: %w", err)
|
|
}
|
|
|
|
// Read response error.
|
|
buf, err := readBytes(nil, bc, maxErrorMessageSize)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot read error message: %w", err)
|
|
}
|
|
if len(buf) > 0 {
|
|
return nil, newErrRemote(buf)
|
|
}
|
|
|
|
// Read response.
|
|
// The response may contain empty suffix, so it is prepended with the number of the following suffixes.
|
|
suffixesCount, err := readUint64(bc)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot read the number of tag value suffixes: %w", err)
|
|
}
|
|
suffixes := make([]string, 0, suffixesCount)
|
|
for i := 0; i < int(suffixesCount); i++ {
|
|
buf, err = readBytes(buf[:0], bc, maxLabelValueSize)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot read tag value suffix #%d: %w", i+1, err)
|
|
}
|
|
suffixes = append(suffixes, string(buf))
|
|
}
|
|
return suffixes, nil
|
|
}
|
|
|
|
func (sn *storageNode) getTSDBStatusOnConn(bc *handshake.BufferedConn, requestData []byte, focusLabel string, topN int) (*storage.TSDBStatus, error) {
|
|
// Send the request to sn.
|
|
if err := writeBytes(bc, requestData); err != nil {
|
|
return nil, fmt.Errorf("cannot write requestData: %w", err)
|
|
}
|
|
if err := writeBytes(bc, []byte(focusLabel)); err != nil {
|
|
return nil, fmt.Errorf("cannot write focusLabel=%q: %w", focusLabel, err)
|
|
}
|
|
// topN shouldn't exceed 32 bits, so send it as uint32.
|
|
if err := writeUint32(bc, uint32(topN)); err != nil {
|
|
return nil, fmt.Errorf("cannot send topN=%d to conn: %w", topN, err)
|
|
}
|
|
if err := bc.Flush(); err != nil {
|
|
return nil, fmt.Errorf("cannot flush tsdbStatus args to conn: %w", err)
|
|
}
|
|
|
|
// Read response error.
|
|
buf, err := readBytes(nil, bc, maxErrorMessageSize)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot read error message: %w", err)
|
|
}
|
|
if len(buf) > 0 {
|
|
return nil, newErrRemote(buf)
|
|
}
|
|
|
|
// Read response
|
|
return readTSDBStatus(bc)
|
|
}
|
|
|
|
func readTSDBStatus(bc *handshake.BufferedConn) (*storage.TSDBStatus, error) {
|
|
totalSeries, err := readUint64(bc)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot read totalSeries: %w", err)
|
|
}
|
|
totalLabelValuePairs, err := readUint64(bc)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot read totalLabelValuePairs: %w", err)
|
|
}
|
|
seriesCountByMetricName, err := readTopHeapEntries(bc)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot read seriesCountByMetricName: %w", err)
|
|
}
|
|
seriesCountByLabelName, err := readTopHeapEntries(bc)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot read seriesCountByLabelName: %w", err)
|
|
}
|
|
seriesCountByFocusLabelValue, err := readTopHeapEntries(bc)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot read seriesCountByFocusLabelValue: %w", err)
|
|
}
|
|
seriesCountByLabelValuePair, err := readTopHeapEntries(bc)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot read seriesCountByLabelValuePair: %w", err)
|
|
}
|
|
labelValueCountByLabelName, err := readTopHeapEntries(bc)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot read labelValueCountByLabelName: %w", err)
|
|
}
|
|
status := &storage.TSDBStatus{
|
|
TotalSeries: totalSeries,
|
|
TotalLabelValuePairs: totalLabelValuePairs,
|
|
SeriesCountByMetricName: seriesCountByMetricName,
|
|
SeriesCountByLabelName: seriesCountByLabelName,
|
|
SeriesCountByFocusLabelValue: seriesCountByFocusLabelValue,
|
|
SeriesCountByLabelValuePair: seriesCountByLabelValuePair,
|
|
LabelValueCountByLabelName: labelValueCountByLabelName,
|
|
}
|
|
return status, nil
|
|
}
|
|
|
|
func readTopHeapEntries(bc *handshake.BufferedConn) ([]storage.TopHeapEntry, error) {
|
|
n, err := readUint64(bc)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot read the number of topHeapEntries: %w", err)
|
|
}
|
|
var a []storage.TopHeapEntry
|
|
var buf []byte
|
|
for i := uint64(0); i < n; i++ {
|
|
buf, err = readBytes(buf[:0], bc, maxLabelNameSize)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot read label name: %w", err)
|
|
}
|
|
count, err := readUint64(bc)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot read label count: %w", err)
|
|
}
|
|
a = append(a, storage.TopHeapEntry{
|
|
Name: string(buf),
|
|
Count: count,
|
|
})
|
|
}
|
|
return a, nil
|
|
}
|
|
|
|
func (sn *storageNode) getSeriesCountOnConn(bc *handshake.BufferedConn, accountID, projectID uint32) (uint64, error) {
|
|
// Send the request to sn.
|
|
if err := sendAccountIDProjectID(bc, accountID, projectID); err != nil {
|
|
return 0, err
|
|
}
|
|
if err := bc.Flush(); err != nil {
|
|
return 0, fmt.Errorf("cannot flush seriesCount args to conn: %w", err)
|
|
}
|
|
|
|
// Read response error.
|
|
buf, err := readBytes(nil, bc, maxErrorMessageSize)
|
|
if err != nil {
|
|
return 0, fmt.Errorf("cannot read error message: %w", err)
|
|
}
|
|
if len(buf) > 0 {
|
|
return 0, newErrRemote(buf)
|
|
}
|
|
|
|
// Read response
|
|
n, err := readUint64(bc)
|
|
if err != nil {
|
|
return 0, fmt.Errorf("cannot read series count: %w", err)
|
|
}
|
|
return n, nil
|
|
}
|
|
|
|
// maxMetricBlockSize is the maximum size of serialized MetricBlock.
|
|
const maxMetricBlockSize = 1024 * 1024
|
|
|
|
// maxErrorMessageSize is the maximum size of error message received
|
|
// from vmstorage.
|
|
const maxErrorMessageSize = 64 * 1024
|
|
|
|
func (sn *storageNode) processSearchMetricNamesOnConn(bc *handshake.BufferedConn, requestData []byte) ([]string, error) {
|
|
// Send the requst to sn.
|
|
if err := writeBytes(bc, requestData); err != nil {
|
|
return nil, fmt.Errorf("cannot write requestData: %w", err)
|
|
}
|
|
if err := bc.Flush(); err != nil {
|
|
return nil, fmt.Errorf("cannot flush requestData to conn: %w", err)
|
|
}
|
|
|
|
// Read response error.
|
|
buf, err := readBytes(nil, bc, maxErrorMessageSize)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot read error message: %w", err)
|
|
}
|
|
if len(buf) > 0 {
|
|
return nil, newErrRemote(buf)
|
|
}
|
|
|
|
// Read metricNames from response.
|
|
metricNamesCount, err := readUint64(bc)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot read metricNamesCount: %w", err)
|
|
}
|
|
metricNames := make([]string, metricNamesCount)
|
|
for i := int64(0); i < int64(metricNamesCount); i++ {
|
|
buf, err = readBytes(buf[:0], bc, maxMetricNameSize)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot read metricName #%d: %w", i+1, err)
|
|
}
|
|
metricNames[i] = string(buf)
|
|
}
|
|
return metricNames, nil
|
|
}
|
|
|
|
const maxMetricNameSize = 64 * 1024
|
|
|
|
func (sn *storageNode) processSearchQueryOnConn(bc *handshake.BufferedConn, requestData []byte, processBlock func(mb *storage.MetricBlock) error) error {
|
|
// Send the request to sn.
|
|
if err := writeBytes(bc, requestData); err != nil {
|
|
return fmt.Errorf("cannot write requestData: %w", err)
|
|
}
|
|
if err := bc.Flush(); err != nil {
|
|
return fmt.Errorf("cannot flush requestData to conn: %w", err)
|
|
}
|
|
|
|
// Read response error.
|
|
buf, err := readBytes(nil, bc, maxErrorMessageSize)
|
|
if err != nil {
|
|
return fmt.Errorf("cannot read error message: %w", err)
|
|
}
|
|
if len(buf) > 0 {
|
|
return newErrRemote(buf)
|
|
}
|
|
|
|
// Read response. It may consist of multiple MetricBlocks.
|
|
blocksRead := 0
|
|
var mb storage.MetricBlock
|
|
for {
|
|
buf, err = readBytes(buf[:0], bc, maxMetricBlockSize)
|
|
if err != nil {
|
|
return fmt.Errorf("cannot read MetricBlock #%d: %w", blocksRead, err)
|
|
}
|
|
if len(buf) == 0 {
|
|
// Reached the end of the response
|
|
return nil
|
|
}
|
|
tail, err := mb.Unmarshal(buf)
|
|
if err != nil {
|
|
return fmt.Errorf("cannot unmarshal MetricBlock #%d: %w", blocksRead, err)
|
|
}
|
|
if len(tail) != 0 {
|
|
return fmt.Errorf("non-empty tail after unmarshaling MetricBlock #%d: (len=%d) %q", blocksRead, len(tail), tail)
|
|
}
|
|
blocksRead++
|
|
sn.metricBlocksRead.Inc()
|
|
sn.metricRowsRead.Add(mb.Block.RowsCount())
|
|
if err := processBlock(&mb); err != nil {
|
|
return fmt.Errorf("cannot process MetricBlock #%d: %w", blocksRead, err)
|
|
}
|
|
}
|
|
}
|
|
|
|
func writeTimeRange(bc *handshake.BufferedConn, tr storage.TimeRange) error {
|
|
if err := writeUint64(bc, uint64(tr.MinTimestamp)); err != nil {
|
|
return fmt.Errorf("cannot send minTimestamp=%d to conn: %w", tr.MinTimestamp, err)
|
|
}
|
|
if err := writeUint64(bc, uint64(tr.MaxTimestamp)); err != nil {
|
|
return fmt.Errorf("cannot send maxTimestamp=%d to conn: %w", tr.MaxTimestamp, err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func writeLimit(bc *handshake.BufferedConn, limit int) error {
|
|
if limit < 0 {
|
|
limit = 0
|
|
}
|
|
if limit > 1<<31-1 {
|
|
limit = 1<<31 - 1
|
|
}
|
|
limitU32 := uint32(limit)
|
|
if err := writeUint32(bc, limitU32); err != nil {
|
|
return fmt.Errorf("cannot write limit=%d to conn: %w", limitU32, err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func writeBytes(bc *handshake.BufferedConn, buf []byte) error {
|
|
sizeBuf := encoding.MarshalUint64(nil, uint64(len(buf)))
|
|
if _, err := bc.Write(sizeBuf); err != nil {
|
|
return err
|
|
}
|
|
_, err := bc.Write(buf)
|
|
return err
|
|
}
|
|
|
|
func writeUint32(bc *handshake.BufferedConn, n uint32) error {
|
|
buf := encoding.MarshalUint32(nil, n)
|
|
_, err := bc.Write(buf)
|
|
return err
|
|
}
|
|
|
|
func writeUint64(bc *handshake.BufferedConn, n uint64) error {
|
|
buf := encoding.MarshalUint64(nil, n)
|
|
_, err := bc.Write(buf)
|
|
return err
|
|
}
|
|
|
|
func writeBool(bc *handshake.BufferedConn, b bool) error {
|
|
var buf [1]byte
|
|
if b {
|
|
buf[0] = 1
|
|
}
|
|
_, err := bc.Write(buf[:])
|
|
return err
|
|
}
|
|
|
|
func writeByte(bc *handshake.BufferedConn, b byte) error {
|
|
var buf [1]byte
|
|
buf[0] = b
|
|
_, err := bc.Write(buf[:])
|
|
return err
|
|
}
|
|
|
|
func sendAccountIDProjectID(bc *handshake.BufferedConn, accountID, projectID uint32) error {
|
|
if err := writeUint32(bc, accountID); err != nil {
|
|
return fmt.Errorf("cannot send accountID=%d to conn: %w", accountID, err)
|
|
}
|
|
if err := writeUint32(bc, projectID); err != nil {
|
|
return fmt.Errorf("cannot send projectID=%d to conn: %w", projectID, err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func readBytes(buf []byte, bc *handshake.BufferedConn, maxDataSize int) ([]byte, error) {
|
|
buf = bytesutil.ResizeNoCopyMayOverallocate(buf, 8)
|
|
if n, err := io.ReadFull(bc, buf); err != nil {
|
|
return buf, fmt.Errorf("cannot read %d bytes with data size: %w; read only %d bytes", len(buf), err, n)
|
|
}
|
|
dataSize := encoding.UnmarshalUint64(buf)
|
|
if dataSize > uint64(maxDataSize) {
|
|
return buf, fmt.Errorf("too big data size: %d; it mustn't exceed %d bytes", dataSize, maxDataSize)
|
|
}
|
|
buf = bytesutil.ResizeNoCopyMayOverallocate(buf, int(dataSize))
|
|
if dataSize == 0 {
|
|
return buf, nil
|
|
}
|
|
if n, err := io.ReadFull(bc, buf); err != nil {
|
|
return buf, fmt.Errorf("cannot read data with size %d: %w; read only %d bytes", dataSize, err, n)
|
|
}
|
|
return buf, nil
|
|
}
|
|
|
|
func readUint64(bc *handshake.BufferedConn) (uint64, error) {
|
|
var buf [8]byte
|
|
if _, err := io.ReadFull(bc, buf[:]); err != nil {
|
|
return 0, fmt.Errorf("cannot read uint64: %w", err)
|
|
}
|
|
n := encoding.UnmarshalUint64(buf[:])
|
|
return n, nil
|
|
}
|
|
|
|
var storageNodes []*storageNode
|
|
|
|
// InitStorageNodes initializes storage nodes' connections to the given addrs.
|
|
func InitStorageNodes(addrs []string) {
|
|
if len(addrs) == 0 {
|
|
logger.Panicf("BUG: addrs must be non-empty")
|
|
}
|
|
|
|
for _, addr := range addrs {
|
|
if _, _, err := net.SplitHostPort(addr); err != nil {
|
|
// Automatically add missing port.
|
|
addr += ":8401"
|
|
}
|
|
sn := &storageNode{
|
|
// There is no need in requests compression, since they are usually very small.
|
|
connPool: netutil.NewConnPool("vmselect", addr, handshake.VMSelectClient, 0, *vmstorageDialTimeout),
|
|
|
|
concurrentQueries: metrics.NewCounter(fmt.Sprintf(`vm_concurrent_queries{name="vmselect", addr=%q}`, addr)),
|
|
|
|
registerMetricNamesRequests: metrics.NewCounter(fmt.Sprintf(`vm_requests_total{action="registerMetricNames", type="rpcClient", name="vmselect", addr=%q}`, addr)),
|
|
registerMetricNamesErrors: metrics.NewCounter(fmt.Sprintf(`vm_request_errors_total{action="registerMetricNames", type="rpcClient", name="vmselect", addr=%q}`, addr)),
|
|
deleteSeriesRequests: metrics.NewCounter(fmt.Sprintf(`vm_requests_total{action="deleteSeries", type="rpcClient", name="vmselect", addr=%q}`, addr)),
|
|
deleteSeriesErrors: metrics.NewCounter(fmt.Sprintf(`vm_request_errors_total{action="deleteSeries", type="rpcClient", name="vmselect", addr=%q}`, addr)),
|
|
labelNamesRequests: metrics.NewCounter(fmt.Sprintf(`vm_requests_total{action="labelNames", type="rpcClient", name="vmselect", addr=%q}`, addr)),
|
|
labelNamesErrors: metrics.NewCounter(fmt.Sprintf(`vm_request_errors_total{action="labelNames", type="rpcClient", name="vmselect", addr=%q}`, addr)),
|
|
labelValuesRequests: metrics.NewCounter(fmt.Sprintf(`vm_requests_total{action="labelValues", type="rpcClient", name="vmselect", addr=%q}`, addr)),
|
|
labelValuesErrors: metrics.NewCounter(fmt.Sprintf(`vm_request_errors_total{action="labelValues", type="rpcClient", name="vmselect", addr=%q}`, addr)),
|
|
tagValueSuffixesRequests: metrics.NewCounter(fmt.Sprintf(`vm_requests_total{action="tagValueSuffixes", type="rpcClient", name="vmselect", addr=%q}`, addr)),
|
|
tagValueSuffixesErrors: metrics.NewCounter(fmt.Sprintf(`vm_request_errors_total{action="tagValueSuffixes", type="rpcClient", name="vmselect", addr=%q}`, addr)),
|
|
tsdbStatusRequests: metrics.NewCounter(fmt.Sprintf(`vm_requests_total{action="tsdbStatus", type="rpcClient", name="vmselect", addr=%q}`, addr)),
|
|
tsdbStatusErrors: metrics.NewCounter(fmt.Sprintf(`vm_request_errors_total{action="tsdbStatus", type="rpcClient", name="vmselect", addr=%q}`, addr)),
|
|
seriesCountRequests: metrics.NewCounter(fmt.Sprintf(`vm_requests_total{action="seriesCount", type="rpcClient", name="vmselect", addr=%q}`, addr)),
|
|
seriesCountErrors: metrics.NewCounter(fmt.Sprintf(`vm_request_errors_total{action="seriesCount", type="rpcClient", name="vmselect", addr=%q}`, addr)),
|
|
searchMetricNamesRequests: metrics.NewCounter(fmt.Sprintf(`vm_requests_total{action="searchMetricNames", type="rpcClient", name="vmselect", addr=%q}`, addr)),
|
|
searchMetricNamesErrors: metrics.NewCounter(fmt.Sprintf(`vm_request_errors_total{action="searchMetricNames", type="rpcClient", name="vmselect", addr=%q}`, addr)),
|
|
searchRequests: metrics.NewCounter(fmt.Sprintf(`vm_requests_total{action="search", type="rpcClient", name="vmselect", addr=%q}`, addr)),
|
|
searchErrors: metrics.NewCounter(fmt.Sprintf(`vm_request_errors_total{action="search", type="rpcClient", name="vmselect", addr=%q}`, addr)),
|
|
|
|
metricBlocksRead: metrics.NewCounter(fmt.Sprintf(`vm_metric_blocks_read_total{name="vmselect", addr=%q}`, addr)),
|
|
metricRowsRead: metrics.NewCounter(fmt.Sprintf(`vm_metric_rows_read_total{name="vmselect", addr=%q}`, addr)),
|
|
}
|
|
storageNodes = append(storageNodes, sn)
|
|
}
|
|
}
|
|
|
|
// Stop gracefully stops netstorage.
|
|
func Stop() {
|
|
// Nothing to do at the moment.
|
|
}
|
|
|
|
var (
|
|
partialLabelNamesResults = metrics.NewCounter(`vm_partial_results_total{action="labelNames", name="vmselect"}`)
|
|
partialLabelValuesResults = metrics.NewCounter(`vm_partial_results_total{action="labelValues", name="vmselect"}`)
|
|
partialTagValueSuffixesResults = metrics.NewCounter(`vm_partial_results_total{action="tagValueSuffixes", name="vmselect"}`)
|
|
partialTSDBStatusResults = metrics.NewCounter(`vm_partial_results_total{action="tsdbStatus", name="vmselect"}`)
|
|
partialSeriesCountResults = metrics.NewCounter(`vm_partial_results_total{action="seriesCount", name="vmselect"}`)
|
|
partialSearchMetricNamesResults = metrics.NewCounter(`vm_partial_results_total{action="searchMetricNames", name="vmselect"}`)
|
|
partialSearchResults = metrics.NewCounter(`vm_partial_results_total{action="search", name="vmselect"}`)
|
|
)
|
|
|
|
func applyGraphiteRegexpFilter(filter string, ss []string) ([]string, error) {
|
|
// Anchor filter regexp to the beginning of the string as Graphite does.
|
|
// See https://github.com/graphite-project/graphite-web/blob/3ad279df5cb90b211953e39161df416e54a84948/webapp/graphite/tags/localdatabase.py#L157
|
|
filter = "^(?:" + filter + ")"
|
|
re, err := regexp.Compile(filter)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot parse regexp filter=%q: %w", filter, err)
|
|
}
|
|
dst := ss[:0]
|
|
for _, s := range ss {
|
|
if re.MatchString(s) {
|
|
dst = append(dst, s)
|
|
}
|
|
}
|
|
return dst, nil
|
|
}
|