traefik/vendor/github.com/docker/libcompose/project/project_containers.go

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package project
import (
"fmt"
"golang.org/x/net/context"
"github.com/docker/libcompose/project/events"
)
// Containers lists the containers for the specified services. Can be filter using
// the Filter struct.
func (p *Project) Containers(ctx context.Context, filter Filter, services ...string) ([]string, error) {
containers := []string{}
err := p.forEach(services, wrapperAction(func(wrapper *serviceWrapper, wrappers map[string]*serviceWrapper) {
wrapper.Do(nil, events.NoEvent, events.NoEvent, func(service Service) error {
serviceContainers, innerErr := service.Containers(ctx)
if innerErr != nil {
return innerErr
}
for _, container := range serviceContainers {
running := container.IsRunning(ctx)
switch filter.State {
case Running:
if !running {
continue
}
case Stopped:
if running {
continue
}
case AnyState:
// Don't do a thing
default:
// Invalid state filter
return fmt.Errorf("Invalid container filter: %s", filter.State)
}
containerID := container.ID()
containers = append(containers, containerID)
}
return nil
})
}), nil)
if err != nil {
return nil, err
}
return containers, nil
}