mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-12 12:46:23 +01:00
112 lines
2.9 KiB
Go
112 lines
2.9 KiB
Go
package prometheus
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import (
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"fmt"
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"net/http"
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"runtime"
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"sync"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vminsert/concurrencylimiter"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vminsert/netstorage"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/auth"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/storage"
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"github.com/VictoriaMetrics/metrics"
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)
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var rowsInserted = metrics.NewCounter(`vm_rows_inserted_total{type="prometheus"}`)
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// InsertHandler processes remote write for prometheus.
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func InsertHandler(at *auth.Token, r *http.Request, maxSize int64) error {
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return concurrencylimiter.Do(func() error {
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return insertHandlerInternal(at, r, maxSize)
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})
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}
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func insertHandlerInternal(at *auth.Token, r *http.Request, maxSize int64) error {
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ctx := getPushCtx()
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defer putPushCtx(ctx)
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if err := ctx.Read(r, maxSize); err != nil {
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return err
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}
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ic := &ctx.Common
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ic.Reset()
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timeseries := ctx.req.Timeseries
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for i := range timeseries {
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ts := ×eries[i]
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storageNodeIdx := ic.GetStorageNodeIdx(at, ts.Labels)
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ic.MetricNameBuf = ic.MetricNameBuf[:0]
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for i := range ts.Samples {
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r := &ts.Samples[i]
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if len(ic.MetricNameBuf) == 0 {
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ic.MetricNameBuf = storage.MarshalMetricNameRaw(ic.MetricNameBuf[:0], at.AccountID, at.ProjectID, ts.Labels)
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}
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if err := ic.WriteDataPointExt(at, storageNodeIdx, ic.MetricNameBuf, r.Timestamp, r.Value); err != nil {
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return err
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}
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}
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rowsInserted.Add(len(ts.Samples))
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}
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return ic.FlushBufs()
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}
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type pushCtx struct {
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Common netstorage.InsertCtx
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req prompb.WriteRequest
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reqBuf []byte
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}
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func (ctx *pushCtx) reset() {
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ctx.Common.Reset()
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ctx.req.Reset()
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ctx.reqBuf = ctx.reqBuf[:0]
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}
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func (ctx *pushCtx) Read(r *http.Request, maxSize int64) error {
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prometheusReadCalls.Inc()
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var err error
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ctx.reqBuf, err = prompb.ReadSnappy(ctx.reqBuf[:0], r.Body, maxSize)
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if err != nil {
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prometheusReadErrors.Inc()
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return fmt.Errorf("cannot read prompb.WriteRequest: %s", err)
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}
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if err = ctx.req.Unmarshal(ctx.reqBuf); err != nil {
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prometheusUnmarshalErrors.Inc()
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return fmt.Errorf("cannot unmarshal prompb.WriteRequest with size %d bytes: %s", len(ctx.reqBuf), err)
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}
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return nil
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}
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var (
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prometheusReadCalls = metrics.NewCounter(`vm_read_calls_total{name="prometheus"}`)
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prometheusReadErrors = metrics.NewCounter(`vm_read_errors_total{name="prometheus"}`)
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prometheusUnmarshalErrors = metrics.NewCounter(`vm_unmarshal_errors_total{name="prometheus"}`)
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)
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func getPushCtx() *pushCtx {
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select {
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case ctx := <-pushCtxPoolCh:
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return ctx
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default:
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if v := pushCtxPool.Get(); v != nil {
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return v.(*pushCtx)
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}
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return &pushCtx{}
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}
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}
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func putPushCtx(ctx *pushCtx) {
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ctx.reset()
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select {
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case pushCtxPoolCh <- ctx:
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default:
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pushCtxPool.Put(ctx)
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}
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}
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var pushCtxPool sync.Pool
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var pushCtxPoolCh = make(chan *pushCtx, runtime.GOMAXPROCS(-1))
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