istio.io/istio@v0.0.0-20240520182934-d79c90f27776/pkg/dns/client/monitoring.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 client
    16  
    17  import (
    18  	"istio.io/istio/pkg/monitoring"
    19  )
    20  
    21  var (
    22  	requests = monitoring.NewSum(
    23  		"dns_requests_total",
    24  		"Total number of DNS requests.",
    25  	)
    26  
    27  	upstreamRequests = monitoring.NewSum(
    28  		"dns_upstream_requests_total",
    29  		"Total number of DNS requests forwarded to upstream.",
    30  	)
    31  
    32  	failures = monitoring.NewSum(
    33  		"dns_upstream_failures_total",
    34  		"Total number of DNS failures.",
    35  	)
    36  
    37  	requestDuration = monitoring.NewDistribution(
    38  		"dns_upstream_request_duration_seconds",
    39  		"Total time in seconds Istio takes to get DNS response from upstream.",
    40  		[]float64{.001, .005, 0.01, 0.1, 1, 5},
    41  	)
    42  )