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rollback.go
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rollback.go
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// Copyright 2020 The PipeCD 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.
package cloudrun
import (
"context"
provider "github.com/pipe-cd/pipecd/pkg/app/piped/cloudprovider/cloudrun"
"github.com/pipe-cd/pipecd/pkg/app/piped/executor"
"github.com/pipe-cd/pipecd/pkg/model"
)
type rollbackExecutor struct {
executor.Input
client provider.Client
}
func (e *rollbackExecutor) Execute(sig executor.StopSignal) model.StageStatus {
var (
ctx = sig.Context()
originalStatus = e.Stage.Status
status model.StageStatus
)
cpName, cpCfg, found := findCloudProvider(&e.Input)
if !found {
return model.StageStatus_STAGE_FAILURE
}
var err error
e.client, err = provider.DefaultRegistry().Client(ctx, cpName, cpCfg, e.Logger)
if err != nil {
e.LogPersister.Errorf("Unable to create ClourRun client for the provider (%v)", err)
return model.StageStatus_STAGE_FAILURE
}
switch model.Stage(e.Stage.Name) {
case model.StageRollback:
status = e.ensureRollback(ctx)
default:
e.LogPersister.Errorf("Unsupported stage %s for cloudrun application", e.Stage.Name)
return model.StageStatus_STAGE_FAILURE
}
return executor.DetermineStageStatus(sig.Signal(), originalStatus, status)
}
func (e *rollbackExecutor) ensureRollback(ctx context.Context) model.StageStatus {
// There is nothing to do if this is the first deployment.
if e.Deployment.RunningCommitHash == "" {
e.LogPersister.Errorf("Unable to determine the last deployed commit to rollback. It seems this is the first deployment.")
return model.StageStatus_STAGE_FAILURE
}
runningDS, err := e.RunningDSP.GetReadOnly(ctx, e.LogPersister)
if err != nil {
e.LogPersister.Errorf("Failed to prepare running deploy source data (%v)", err)
return model.StageStatus_STAGE_FAILURE
}
appCfg := runningDS.ApplicationConfig.CloudRunApplicationSpec
if appCfg == nil {
e.LogPersister.Error("Malformed application configuration: missing CloudRunApplicationSpec")
return model.StageStatus_STAGE_FAILURE
}
sm, ok := loadServiceManifest(&e.Input, appCfg.Input.ServiceManifestFile, runningDS)
if !ok {
return model.StageStatus_STAGE_FAILURE
}
revision, ok := decideRevisionName(sm, e.Deployment.RunningCommitHash, e.LogPersister)
if !ok {
return model.StageStatus_STAGE_FAILURE
}
traffics := []provider.RevisionTraffic{
{
RevisionName: revision,
Percent: 100,
},
}
if !configureServiceManifest(sm, revision, traffics, e.LogPersister) {
return model.StageStatus_STAGE_FAILURE
}
// Add builtin labels for tracking application live state
commit := e.Deployment.CommitHash()
addBuiltinLabels(sm, commit, e.PipedConfig.PipedID, e.Deployment.ApplicationId)
if !apply(ctx, e.client, sm, e.LogPersister) {
return model.StageStatus_STAGE_FAILURE
}
return model.StageStatus_STAGE_SUCCESS
}