istio.io/istio@v0.0.0-20240520182934-d79c90f27776/pilot/cmd/pilot-agent/metrics/metrics.go (about)

     1  // Copyright Istio 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 metrics
    16  
    17  import (
    18  	"time"
    19  
    20  	"istio.io/istio/pkg/log"
    21  	"istio.io/istio/pkg/monitoring"
    22  )
    23  
    24  var (
    25  	typeTag = monitoring.CreateLabel("type")
    26  
    27  	// StartupTime measures the time it takes for the agent to get ready Note: This
    28  	// is dependent on readiness probes. This means our granularity is correlated to
    29  	// the probing interval.
    30  	startupTime = monitoring.NewGauge(
    31  		"startup_duration_seconds",
    32  		"The time from the process starting to being marked ready.",
    33  	)
    34  
    35  	// scrapeErrors records total number of failed scrapes.
    36  	scrapeErrors = monitoring.NewSum(
    37  		"scrape_failures_total",
    38  		"The total number of failed scrapes.",
    39  	)
    40  	EnvoyScrapeErrors = scrapeErrors.With(typeTag.Value(ScrapeTypeEnvoy))
    41  	AppScrapeErrors   = scrapeErrors.With(typeTag.Value(ScrapeTypeApp))
    42  	AgentScrapeErrors = scrapeErrors.With(typeTag.Value(ScrapeTypeAgent))
    43  
    44  	// ScrapeTotals records total number of scrapes.
    45  	ScrapeTotals = monitoring.NewSum(
    46  		"scrapes_total",
    47  		"The total number of scrapes.",
    48  	)
    49  )
    50  
    51  var (
    52  	ScrapeTypeEnvoy = "envoy"
    53  	ScrapeTypeApp   = "application"
    54  	ScrapeTypeAgent = "agent"
    55  )
    56  
    57  var processStartTime = time.Now()
    58  
    59  func RecordStartupTime() {
    60  	delta := time.Since(processStartTime)
    61  	startupTime.Record(delta.Seconds())
    62  	log.Infof("Readiness succeeded in %v", delta)
    63  }