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registry.go
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registry.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 registry
import (
"fmt"
"sync"
"github.com/pipe-cd/pipecd/pkg/app/piped/executor"
"github.com/pipe-cd/pipecd/pkg/app/piped/executor/analysis"
"github.com/pipe-cd/pipecd/pkg/app/piped/executor/cloudrun"
"github.com/pipe-cd/pipecd/pkg/app/piped/executor/ecs"
"github.com/pipe-cd/pipecd/pkg/app/piped/executor/kubernetes"
"github.com/pipe-cd/pipecd/pkg/app/piped/executor/lambda"
"github.com/pipe-cd/pipecd/pkg/app/piped/executor/terraform"
"github.com/pipe-cd/pipecd/pkg/app/piped/executor/wait"
"github.com/pipe-cd/pipecd/pkg/app/piped/executor/waitapproval"
"github.com/pipe-cd/pipecd/pkg/model"
)
type Registry interface {
Executor(stage model.Stage, in executor.Input) (executor.Executor, bool)
RollbackExecutor(kind model.ApplicationKind, in executor.Input) (executor.Executor, bool)
}
type registry struct {
factories map[model.Stage]executor.Factory
rollbackFactories map[model.ApplicationKind]executor.Factory
mu sync.RWMutex
}
func (r *registry) Register(stage model.Stage, f executor.Factory) error {
r.mu.Lock()
defer r.mu.Unlock()
if _, ok := r.factories[stage]; ok {
return fmt.Errorf("executor for %s stage has already been registered", stage)
}
r.factories[stage] = f
return nil
}
func (r *registry) RegisterRollback(kind model.ApplicationKind, f executor.Factory) error {
r.mu.Lock()
defer r.mu.Unlock()
if _, ok := r.rollbackFactories[kind]; ok {
return fmt.Errorf("rollback executor for %s application kind has already been registered", kind.String())
}
r.rollbackFactories[kind] = f
return nil
}
func (r *registry) Executor(stage model.Stage, in executor.Input) (executor.Executor, bool) {
r.mu.RLock()
defer r.mu.RUnlock()
f, ok := r.factories[stage]
if !ok {
return nil, false
}
return f(in), true
}
func (r *registry) RollbackExecutor(kind model.ApplicationKind, in executor.Input) (executor.Executor, bool) {
r.mu.RLock()
defer r.mu.RUnlock()
f, ok := r.rollbackFactories[kind]
if !ok {
return nil, false
}
return f(in), true
}
var defaultRegistry = ®istry{
factories: make(map[model.Stage]executor.Factory),
rollbackFactories: make(map[model.ApplicationKind]executor.Factory),
}
func DefaultRegistry() Registry {
return defaultRegistry
}
// init registers all built-in executors to the default registry.
func init() {
analysis.Register(defaultRegistry)
cloudrun.Register(defaultRegistry)
kubernetes.Register(defaultRegistry)
lambda.Register(defaultRegistry)
terraform.Register(defaultRegistry)
ecs.Register(defaultRegistry)
wait.Register(defaultRegistry)
waitapproval.Register(defaultRegistry)
}