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delete_snapshot.go
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delete_snapshot.go
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/**
* Copyright 2020 IBM Corp.
*
* 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.
*/
// Package provider ...
package provider
import (
"time"
"github.com/IBM/ibmcloud-volume-interface/lib/metrics"
"github.com/IBM/ibmcloud-volume-interface/lib/provider"
userError "github.com/IBM/ibmcloud-volume-vpc/common/messages"
"github.com/IBM/ibmcloud-volume-vpc/common/vpcclient/models"
"go.uber.org/zap"
)
// DeleteSnapshot delete snapshot
func (vpcs *VPCSession) DeleteSnapshot(snapshot *provider.Snapshot) error {
vpcs.Logger.Info("Entry DeleteSnapshot", zap.Reflect("snapshotID", snapshot.SnapshotID))
defer vpcs.Logger.Info("Exit DeleteSnapshot", zap.Reflect("snapshotID", snapshot.SnapshotID))
defer metrics.UpdateDurationFromStart(vpcs.Logger, "DeleteSnapshot", time.Now())
var err error
if snapshot == nil {
err = userError.GetUserError("InvalidSnapshotID", nil, nil)
return err
}
vpcs.Logger.Info("Deleting snapshot from VPC provider...")
err = retry(vpcs.Logger, func() error {
err = vpcs.Apiclient.SnapshotService().DeleteSnapshot(snapshot.SnapshotID, vpcs.Logger)
return err
})
if err != nil {
modelError, ok := err.(*models.Error)
if ok && len(modelError.Errors) > 0 && string(modelError.Errors[0].Code) == SnapshotNotFound {
return userError.GetUserError("SnapshotIDNotFound", err)
}
return userError.GetUserError("FailedToDeleteSnapshot", err)
}
err = WaitForSnapshotDeletion(vpcs, snapshot.SnapshotID)
if err != nil {
return userError.GetUserError("FailedToDeleteSnapshot", err, snapshot.SnapshotID)
}
vpcs.Logger.Info("Successfully deleted the snapshot with backend (vpcclient) call)")
return err
}
// WaitForSnapshotDeletion checks the snapshot for valid status
func WaitForSnapshotDeletion(vpcs *VPCSession, snapshotID string) (err error) {
vpcs.Logger.Debug("Entry of WaitForSnapshotDeletion method...")
defer vpcs.Logger.Debug("Exit from WaitForSnapshotDeletion method...")
var skip = false
vpcs.Logger.Info("Getting snapshot details from VPC provider...", zap.Reflect("snapshotID", snapshotID))
err = vpcs.APIRetry.FlexyRetry(vpcs.Logger, func() (error, bool) {
_, err = vpcs.Apiclient.SnapshotService().GetSnapshot(snapshotID, vpcs.Logger)
// Keep retry, until GetSnapshot returns snapshots_not_found
if err != nil {
skip = skipRetry(err.(*models.Error))
return nil, skip
}
return err, false // continue retry as we are not seeing error which means snapshot is available
})
if err == nil && skip {
vpcs.Logger.Info("Snapshot got deleted.", zap.Reflect("snapshotID", snapshotID))
}
return err
}