github.com/pingcap/tiflow@v0.0.0-20240520035814-5bf52d54e205/cdc/puller/metrics.go (about)

     1  // Copyright 2020 PingCAP, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package puller
    15  
    16  import (
    17  	"github.com/prometheus/client_golang/prometheus"
    18  )
    19  
    20  // PullerEventCounter is the counter of puller's received events
    21  // There are two types of events: kv (row changed event), resolved (resolved ts event).
    22  var PullerEventCounter = prometheus.NewCounterVec(
    23  	prometheus.CounterOpts{
    24  		Namespace: "ticdc",
    25  		Subsystem: "puller",
    26  		Name:      "txn_collect_event_count", // keep the old name for compatibility
    27  		Help:      "The number of events received by a puller",
    28  	}, []string{"namespace", "changefeed", "type"})
    29  
    30  var pullerQueueDuration = prometheus.NewHistogramVec(
    31  	prometheus.HistogramOpts{
    32  		Namespace: "ticdc",
    33  		Subsystem: "puller",
    34  		Name:      "queue_duration",
    35  		Help:      "time of queue in puller",
    36  		Buckets:   prometheus.ExponentialBuckets(1, 2, 20),
    37  	},
    38  	// types : kv, resolved.
    39  	[]string{"namespace", "changefeed", "type"})
    40  
    41  // InitMetrics registers all metrics in this file
    42  func InitMetrics(registry *prometheus.Registry) {
    43  	registry.MustRegister(PullerEventCounter)
    44  	registry.MustRegister(pullerQueueDuration)
    45  }