go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/cv/internal/common/eventbox/monitoring.go (about)

     1  // Copyright 2021 The LUCI Authors.
     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  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package eventbox
    16  
    17  import (
    18  	"context"
    19  	"math"
    20  
    21  	"go.chromium.org/luci/common/tsmon/distribution"
    22  	"go.chromium.org/luci/common/tsmon/field"
    23  	"go.chromium.org/luci/common/tsmon/metric"
    24  	"go.chromium.org/luci/common/tsmon/types"
    25  )
    26  
    27  var (
    28  	metricListDurationsS = metric.NewCumulativeDistribution(
    29  		"cv/internal/eventbox/list/duration",
    30  		"Distribution of duration of list ops.",
    31  		&types.MetricMetadata{Units: types.Milliseconds},
    32  		// Bucketer for 1ms..10m range since anything above 10m is bad.
    33  		//
    34  		// $ python3 -c "print(((10**0.058)**100)/1e3/60.0)"
    35  		// 10.515955741336601
    36  		distribution.GeometricBucketer(math.Pow(10, 0.058), 100),
    37  		field.String("recipient"),
    38  		field.String("result"),
    39  	)
    40  
    41  	metricSent = metric.NewCounter(
    42  		"cv/internal/eventbox/sent",
    43  		"Number of events sent.",
    44  		nil,
    45  		field.String("recipient"),
    46  	)
    47  
    48  	metricRemoved = metric.NewCounter(
    49  		"cv/internal/eventbox/removed",
    50  		"Approximate, likely exaggerated, number of events removed.",
    51  		nil,
    52  		field.String("recipient"),
    53  	)
    54  
    55  	metricSize = metric.NewInt(
    56  		"cv/internal/eventbox/size",
    57  		"Number of the events. Updated from successful list ops only.",
    58  		nil,
    59  		field.String("recipient"),
    60  	)
    61  
    62  	metricOldestAgeS = metric.NewFloat(
    63  		"cv/internal/eventbox/oldest_age",
    64  		"Age of the oldest event. Updated from successful list ops only.",
    65  		&types.MetricMetadata{Units: types.Seconds},
    66  		field.String("recipient"),
    67  	)
    68  )
    69  
    70  func monitoringResult(err error) string {
    71  	switch {
    72  	case err == nil:
    73  		return "OK"
    74  	case err == context.DeadlineExceeded:
    75  		return "TIMEOUT"
    76  	default:
    77  		return "FAILURE"
    78  	}
    79  }