CommandableCloudFunctionController

Description

The CommandableCloudFunctionController class allows you to create abstract controllers that receive commands via the Google Function protocols to operations automatically generated for commnads defined in ICommandable components.

Important points

• Each command is exposed as an invoke method that receives a command’s name and parameters.

• Commandable controllers require only 3 lines of code to implement a robust external Google Function-based remote interface.

• This controller is intended to work inside an Google Function container that exploses registered actions externally.

Configuration parameters

• dependencies:
  • controller: override for Controller dependency

References

• *:logger:*:*:1.0: (optional) ILogger components to pass log messages.
• *:counters:*:*:1.0: (optional) ICounters components to pass collected measurements.

Constructors

NewCommandableCloudFunctionController

Creates a new instance of the controller.

NewCommandableCloudFunctionService(name string) *CommandableCloudFunctionController

• name: string - service’s name.

Instance methods

GetParameters

Returns body from Google Function request. This method can be overloaded in child classes

(c *CommandableCloudFunctionService) GetParameters(req *http.Request) *Parameters

• req: *http.Request - Google Function request.
• returns: *Parameters - Returns Parameters from request

Register

Registers all actions in Google Function.

(c *CommandableCloudFunctionService) Register()

Examples

type MyCommandableCloudFunctionController struct {
	*gcpsrv.CommandableCloudFunctionController
}

func NewMyCommandableCloudFunctionController() *MyCommandableCloudFunctionController {
	c := MyCommandableCloudFunctionController{}
	c.CommandableCloudFunctionController = gcpsrv.NewCommandableCloudFunctionController("mydata")
	c.DependencyResolver.Put(context.Background(), "controller", crefer.NewDescriptor("mygroup", "controller", "default", "*", "*"))
	return &c
}

...

service := NewMyCommandableCloudFunctionService()
service.SetReferences(crefer.NewReferencesFromTuples(
	crefer.NewDescriptor("mygroup","controller","default","default","1.0"), controller,
))
service.Open(ctx, "123")
fmt.Println("The Google Function service is running")