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Add group snapshot controller metrics
this commit adds metrics for volumegroupsnapshot Signed-off-by: yati1998 <[email protected]>
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,88 @@ | ||
| /* | ||
| Copyright 2020 The Kubernetes Authors. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
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| package metrics | ||
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| import ( | ||
| "time" | ||
| ) | ||
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| const ( | ||
| // CreateGroupSnapshotOperationName is the operation that tracks how long the controller takes to create a groupsnapshot. | ||
| // Specifically, the operation metric is emitted based on the following timestamps: | ||
| // - Start_time: controller notices the first time that there is a new VolumeGroupSnapshot CR to dynamically provision a groupsnapshot | ||
| // - End_time: controller notices that the CR has a status with CreationTime field set to be non-nil | ||
| CreateGroupSnapshotOperationName = "CreateGroupSnapshot" | ||
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| // CreateGroupSnapshotAndReadyOperationName is the operation that tracks how long the controller takes to create a groupsnapshot and for it to be ready. | ||
| // Specifically, the operation metric is emitted based on the following timestamps: | ||
| // - Start_time: controller notices the first time that there is a new VolumeGroupSnapshot CR(both dynamic and pre-provisioned cases) | ||
| // - End_time: controller notices that the CR has a status with Ready To Use field set to be true | ||
| CreateGroupSnapshotAndReadyOperationName = "CreateGroupSnapshotAndReady" | ||
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| // DeleteGroupSnapshotOperationName is the operation that tracks how long a groupsnapshot deletion takes. | ||
| // Specifically, the operation metric is emitted based on the following timestamps: | ||
| // - Start_time: controller notices the first time that there is a deletion timestamp placed on the VolumeGroupSnapshot CR and the CR is ready to be deleted. | ||
| // Note that if the CR is being used by a PVC for rehydration, the controller should *NOT* set the start_time. | ||
| // - End_time: controller removed all finalizers on the VolumeGroupSnapshot CR such that the CR is ready to be removed in the API server. | ||
| DeleteGroupSnapshotOperationName = "DeleteGroupSnapshot" | ||
| ) | ||
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| // RecordVolumeGroupMetrics emits operation metrics | ||
| func (opMgr *operationMetricsManager) RecordVolumeGroupMetrics(opKey OperationKey, opStatus OperationStatus, driverName string) { | ||
| opMgr.mu.Lock() | ||
| defer opMgr.mu.Unlock() | ||
| opVal, exists := opMgr.cache[opKey] | ||
| if !exists { | ||
| // the operation has not been cached, return directly | ||
| return | ||
| } | ||
| status := string(SnapshotStatusTypeUnknown) | ||
| if opStatus != nil { | ||
| status = opStatus.String() | ||
| } | ||
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| // if we do not know the driverName while recording metrics, | ||
| // refer to the cached version instead. | ||
| if driverName == "" || driverName == unknownDriverName { | ||
| driverName = opVal.Driver | ||
| } | ||
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| operationDuration := time.Since(opVal.startTime).Seconds() | ||
| opMgr.opLatencyMetrics.WithLabelValues(driverName, opKey.Name, opVal.SnapshotType, status).Observe(operationDuration) | ||
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| // Report cancel metrics if we are deleting an unfinished VolumeGroupSnapshot | ||
| if opKey.Name == DeleteGroupSnapshotOperationName { | ||
| // check if we have a CreateGroupSnapshot operation pending for this | ||
| createKey := NewOperationKey(CreateGroupSnapshotOperationName, opKey.ResourceID) | ||
| obj, exists := opMgr.cache[createKey] | ||
| if exists { | ||
| // record a cancel metric if found | ||
| opMgr.recordCancelMetricLocked(obj, createKey, operationDuration) | ||
| } | ||
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| // check if we have a CreateGroupSnapshotAndReady operation pending for this | ||
| createAndReadyKey := NewOperationKey(CreateGroupSnapshotAndReadyOperationName, opKey.ResourceID) | ||
| obj, exists = opMgr.cache[createAndReadyKey] | ||
| if exists { | ||
| // record a cancel metric if found | ||
| opMgr.recordCancelMetricLocked(obj, createAndReadyKey, operationDuration) | ||
| } | ||
| } | ||
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| delete(opMgr.cache, opKey) | ||
| opMgr.opInFlight.Set(float64(len(opMgr.cache))) | ||
| } |
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