github.com/loggregator/cli@v6.33.1-0.20180224010324-82334f081791+incompatible/actor/v3action/application.go

package v3action

import (
	"time"

	"code.cloudfoundry.org/cli/actor/actionerror"
	"code.cloudfoundry.org/cli/api/cloudcontroller/ccerror"
	"code.cloudfoundry.org/cli/api/cloudcontroller/ccv3"
	"code.cloudfoundry.org/cli/api/cloudcontroller/ccv3/constant"
)

// Application represents a V3 actor application.
type Application struct {
	Name                string
	GUID                string
	State               constant.ApplicationState
	LifecycleType       constant.AppLifecycleType
	LifecycleBuildpacks []string
}

func (app Application) Started() bool {
	return app.State == constant.ApplicationStarted
}

func (actor Actor) DeleteApplicationByNameAndSpace(name string, spaceGUID string) (Warnings, error) {
	var allWarnings Warnings

	app, getAppWarnings, err := actor.GetApplicationByNameAndSpace(name, spaceGUID)
	allWarnings = append(allWarnings, getAppWarnings...)
	if err != nil {
		return allWarnings, err
	}

	jobURL, deleteAppWarnings, err := actor.CloudControllerClient.DeleteApplication(app.GUID)
	allWarnings = append(allWarnings, deleteAppWarnings...)
	if err != nil {
		return allWarnings, err
	}

	pollWarnings, err := actor.CloudControllerClient.PollJob(jobURL)
	allWarnings = append(allWarnings, pollWarnings...)
	return allWarnings, err
}

// GetApplicationByNameAndSpace returns the application with the given
// name in the given space.
func (actor Actor) GetApplicationByNameAndSpace(appName string, spaceGUID string) (Application, Warnings, error) {
	apps, warnings, err := actor.CloudControllerClient.GetApplications(
		ccv3.Query{Key: ccv3.NameFilter, Values: []string{appName}},
		ccv3.Query{Key: ccv3.SpaceGUIDFilter, Values: []string{spaceGUID}},
	)
	if err != nil {
		return Application{}, Warnings(warnings), err
	}

	if len(apps) == 0 {
		return Application{}, Warnings(warnings), actionerror.ApplicationNotFoundError{Name: appName}
	}

	return actor.convertCCToActorApplication(apps[0]), Warnings(warnings), nil
}

// GetApplicationsBySpace returns all applications in a space.
func (actor Actor) GetApplicationsBySpace(spaceGUID string) ([]Application, Warnings, error) {
	ccApps, warnings, err := actor.CloudControllerClient.GetApplications(
		ccv3.Query{Key: ccv3.SpaceGUIDFilter, Values: []string{spaceGUID}},
	)

	if err != nil {
		return []Application{}, Warnings(warnings), err
	}

	var apps []Application
	for _, ccApp := range ccApps {
		apps = append(apps, actor.convertCCToActorApplication(ccApp))
	}
	return apps, Warnings(warnings), nil
}

// CreateApplicationInSpace creates and returns the application with the given
// name in the given space.
func (actor Actor) CreateApplicationInSpace(app Application, spaceGUID string) (Application, Warnings, error) {
	createdApp, warnings, err := actor.CloudControllerClient.CreateApplication(
		ccv3.Application{
			LifecycleType:       app.LifecycleType,
			LifecycleBuildpacks: app.LifecycleBuildpacks,
			Name:                app.Name,
			Relationships: ccv3.Relationships{
				constant.SpaceRelationship: ccv3.Relationship{GUID: spaceGUID},
			},
		})

	if err != nil {
		if _, ok := err.(ccerror.NameNotUniqueInSpaceError); ok {
			return Application{}, Warnings(warnings), actionerror.ApplicationAlreadyExistsError{Name: app.Name}
		}
		return Application{}, Warnings(warnings), err
	}

	return actor.convertCCToActorApplication(createdApp), Warnings(warnings), nil
}

// StopApplication stops an application.
func (actor Actor) StopApplication(appGUID string) (Warnings, error) {
	_, warnings, err := actor.CloudControllerClient.StopApplication(appGUID)

	return Warnings(warnings), err
}

// StartApplication starts an application.
func (actor Actor) StartApplication(appGUID string) (Application, Warnings, error) {
	updatedApp, warnings, err := actor.CloudControllerClient.StartApplication(appGUID)
	if err != nil {
		return Application{}, Warnings(warnings), err
	}

	return actor.convertCCToActorApplication(updatedApp), Warnings(warnings), nil
}

func (actor Actor) PollStart(appGUID string, warningsChannel chan<- Warnings) error {
	processes, warnings, err := actor.CloudControllerClient.GetApplicationProcesses(appGUID)
	warningsChannel <- Warnings(warnings)
	if err != nil {
		return err
	}

	timeout := time.Now().Add(actor.Config.StartupTimeout())
	for time.Now().Before(timeout) {
		readyProcs := 0
		for _, process := range processes {
			ready, err := actor.processStatus(process, warningsChannel)
			if err != nil {
				return err
			}

			if ready {
				readyProcs++
			}
		}

		if readyProcs == len(processes) {
			return nil
		}
		time.Sleep(actor.Config.PollingInterval())
	}

	return actionerror.StartupTimeoutError{}
}

// UpdateApplication updates the buildpacks on an application
func (actor Actor) UpdateApplication(app Application) (Application, Warnings, error) {
	ccApp := ccv3.Application{
		GUID:                app.GUID,
		LifecycleType:       app.LifecycleType,
		LifecycleBuildpacks: app.LifecycleBuildpacks,
	}

	updatedApp, warnings, err := actor.CloudControllerClient.UpdateApplication(ccApp)
	if err != nil {
		return Application{}, Warnings(warnings), err
	}

	return actor.convertCCToActorApplication(updatedApp), Warnings(warnings), nil
}

func (Actor) convertCCToActorApplication(app ccv3.Application) Application {
	return Application{
		GUID:                app.GUID,
		LifecycleType:       app.LifecycleType,
		LifecycleBuildpacks: app.LifecycleBuildpacks,
		Name:                app.Name,
		State:               app.State,
	}
}

func (actor Actor) processStatus(process ccv3.Process, warningsChannel chan<- Warnings) (bool, error) {
	instances, warnings, err := actor.CloudControllerClient.GetProcessInstances(process.GUID)
	warningsChannel <- Warnings(warnings)
	if err != nil {
		return false, err
	}
	if len(instances) == 0 {
		return true, nil
	}

	for _, instance := range instances {
		if instance.State == constant.ProcessInstanceRunning {
			return true, nil
		}
	}

	for _, instance := range instances {
		if instance.State != constant.ProcessInstanceCrashed {
			return false, nil
		}
	}

	// all of the instances are crashed at this point
	return true, nil
}