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Adding new metric type to track in-flight remote read queries. (#4677)

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Signed-off-by: tariqibrahim <tariq.ibrahim@microsoft.com>
This commit is contained in:
Tariq Ibrahim 2018-10-10 14:48:32 -07:00 committed by Goutham Veeramachaneni
parent 468e49417c
commit 3f7ed7de49
1 changed files with 20 additions and 0 deletions
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20
storage/remote/read.go
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@ -16,14 +16,30 @@ package remote
import ( import (
"context" "context"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/common/model" "github.com/prometheus/common/model"
"github.com/prometheus/prometheus/pkg/labels" "github.com/prometheus/prometheus/pkg/labels"
"github.com/prometheus/prometheus/storage" "github.com/prometheus/prometheus/storage"
) )
var remoteReadQueries = prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: namespace,
Subsystem: subsystem,
Name: "remote_read_queries",
Help: "The number of in-flight remote read queries.",
},
[]string{"client"},
)
func init() {
prometheus.MustRegister(remoteReadQueries)
}
// QueryableClient returns a storage.Queryable which queries the given // QueryableClient returns a storage.Queryable which queries the given
// Client to select series sets. // Client to select series sets.
func QueryableClient(c *Client) storage.Queryable { func QueryableClient(c *Client) storage.Queryable {
remoteReadQueries.WithLabelValues(c.Name())
return storage.QueryableFunc(func(ctx context.Context, mint, maxt int64) (storage.Querier, error) { return storage.QueryableFunc(func(ctx context.Context, mint, maxt int64) (storage.Querier, error) {
return &querier{ return &querier{
ctx: ctx, ctx: ctx,
@ -49,6 +65,10 @@ func (q *querier) Select(p *storage.SelectParams, matchers ...*labels.Matcher) (
return nil, err return nil, err
} }
remoteReadGauge := remoteReadQueries.WithLabelValues(q.client.Name())
remoteReadGauge.Inc()
defer remoteReadGauge.Dec()
res, err := q.client.Read(q.ctx, query) res, err := q.client.Read(q.ctx, query)
if err != nil { if err != nil {
return nil, err return nil, err