istio.io/istio@v0.0.0-20240520182934-d79c90f27776/pkg/istio-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  	"istio.io/istio/pkg/monitoring"
    19  )
    20  
    21  const (
    22  	Cancel = "cancelled"
    23  	Error  = "error"
    24  )
    25  
    26  var (
    27  	disconnectionTypeTag = monitoring.CreateLabel("type")
    28  
    29  	// IstiodConnectionFailures records total number of connection failures to Istiod.
    30  	IstiodConnectionFailures = monitoring.NewSum(
    31  		"istiod_connection_failures",
    32  		"The total number of connection failures to Istiod",
    33  	)
    34  
    35  	// istiodDisconnections records total number of unexpected disconnections by Istiod.
    36  	istiodDisconnections = monitoring.NewSum(
    37  		"istiod_connection_terminations",
    38  		"The total number of connection errors to Istiod",
    39  	)
    40  
    41  	// envoyDisconnections records total number of unexpected disconnections by Envoy.
    42  	envoyDisconnections = monitoring.NewSum(
    43  		"envoy_connection_terminations",
    44  		"The total number of connection errors from envoy",
    45  	)
    46  
    47  	// TODO: Add type url as type for requeasts and responses if needed.
    48  
    49  	// XdsProxyRequests records total number of downstream requests.
    50  	XdsProxyRequests = monitoring.NewSum(
    51  		"xds_proxy_requests",
    52  		"The total number of Xds Proxy Requests",
    53  	)
    54  
    55  	// XdsProxyResponses records total number of upstream responses.
    56  	XdsProxyResponses = monitoring.NewSum(
    57  		"xds_proxy_responses",
    58  		"The total number of Xds Proxy Responses",
    59  	)
    60  
    61  	IstiodConnectionCancellations = istiodDisconnections.With(disconnectionTypeTag.Value(Cancel))
    62  	IstiodConnectionErrors        = istiodDisconnections.With(disconnectionTypeTag.Value(Error))
    63  	EnvoyConnectionCancellations  = envoyDisconnections.With(disconnectionTypeTag.Value(Cancel))
    64  	EnvoyConnectionErrors         = envoyDisconnections.With(disconnectionTypeTag.Value(Error))
    65  )