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cache.go
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cache.go
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// Copyright 2024 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 trigger
import (
"context"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"github.com/pipe-cd/pipecd/pkg/app/server/service/pipedservice"
"github.com/pipe-cd/pipecd/pkg/cache"
"github.com/pipe-cd/pipecd/pkg/model"
)
type lastTriggeredCommitStore struct {
apiClient apiClient
cache cache.Cache
}
func (s *lastTriggeredCommitStore) Get(ctx context.Context, applicationID string) (string, error) {
// Firstly, find from memory cache.
commit, err := s.cache.Get(applicationID)
if err == nil {
return commit.(string), nil
}
// No data in memorycache so we have to cost a RPC call to get from control-plane.
deploy, err := s.getLastTriggeredDeployment(ctx, applicationID)
switch {
case err == nil:
return deploy.Trigger.Commit.Hash, nil
case status.Code(err) == codes.NotFound:
// It seems this application has not been deployed anytime.
return "", nil
default:
return "", err
}
}
func (s *lastTriggeredCommitStore) Put(applicationID, commit string) error {
return s.cache.Put(applicationID, commit)
}
func (s *lastTriggeredCommitStore) getLastTriggeredDeployment(ctx context.Context, applicationID string) (*model.ApplicationDeploymentReference, error) {
var (
err error
resp *pipedservice.GetApplicationMostRecentDeploymentResponse
retry = pipedservice.NewRetry(3)
req = &pipedservice.GetApplicationMostRecentDeploymentRequest{
ApplicationId: applicationID,
Status: model.DeploymentStatus_DEPLOYMENT_PENDING,
}
)
for retry.WaitNext(ctx) {
if resp, err = s.apiClient.GetApplicationMostRecentDeployment(ctx, req); err == nil {
return resp.Deployment, nil
}
if !pipedservice.Retriable(err) {
return nil, err
}
}
return nil, err
}