mirror of https://github.com/docker/compose.git
62 lines
1.5 KiB
Go
62 lines
1.5 KiB
Go
// +build local
|
|
|
|
/*
|
|
Copyright 2020 Docker Compose CLI 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 local
|
|
|
|
import (
|
|
"context"
|
|
|
|
"github.com/compose-spec/compose-go/types"
|
|
"golang.org/x/sync/errgroup"
|
|
)
|
|
|
|
func inDependencyOrder(ctx context.Context, project *types.Project, fn func(types.ServiceConfig) error) error {
|
|
eg, _ := errgroup.WithContext(ctx)
|
|
var (
|
|
scheduled []string
|
|
ready []string
|
|
)
|
|
results := make(chan string)
|
|
for len(ready) < len(project.Services) {
|
|
for _, service := range project.Services {
|
|
if contains(scheduled, service.Name) {
|
|
continue
|
|
}
|
|
if containsAll(ready, service.GetDependencies()) {
|
|
service := service
|
|
scheduled = append(scheduled, service.Name)
|
|
eg.Go(func() error {
|
|
err := fn(service)
|
|
if err != nil {
|
|
close(results)
|
|
return err
|
|
}
|
|
results <- service.Name
|
|
return nil
|
|
})
|
|
}
|
|
}
|
|
result, ok := <-results
|
|
if !ok {
|
|
break
|
|
}
|
|
ready = append(ready, result)
|
|
}
|
|
return eg.Wait()
|
|
}
|