.. _module-pw_target_runner-go:

--
Go
--
.. pigweed-module-subpage::
   :name: pw_target_runner

Server
------

.. TODO(frolv): Build and host documentation using godoc and link to it.

Full API documentation for the server library can be found here.

Example program
^^^^^^^^^^^^^^^

The code below implements a very basic test server with two test workers which
print out the path of the tests they are scheduled to run.

.. code-block:: go

   package main

   import (
   	"flag"
   	"log"

   	pb "pigweed/proto/pw_target_runner/target_runner_pb"
   	"pigweed/pw_target_runner"
   )

   // Custom test worker that implements the interface server.UnitTestRunner.
   type MyWorker struct {
   	id int
   }

   func (w *MyWorker) WorkerStart() error {
   	log.Printf("Starting test worker %d\n", w.id)
   	return nil
   }

   func (w *MyWorker) WorkerExit() {
   	log.Printf("Exiting test worker %d\n", w.id)
   }

   func (w *MyWorker) HandleRunRequest(req *server.UnitTestRunRequest) *server.UnitTestRunResponse {
   	log.Printf("Worker %d running unit test %s\n", w.id, req.Path)
   	return &server.UnitTestRunResponse{
   		Output: []byte("Success!"),
   		Status: pb.TestStatus_SUCCESS,
   	}
   }

   // To run:
   //
   //   $ go build -o server
   //   $ ./server -port 80
   //
   func main() {
   	port := flag.Int("port", 8080, "Port on which to run server")
         flag.Parse()

   	s := server.New()

   	// Create and register as many unit test workers as you need.
   	s.RegisterWorker(&MyWorker{id: 0})
   	s.RegisterWorker(&MyWorker{id: 1})

   	if err := s.Bind(*port); err != nil {
   		log.Fatalf("Failed to bind to port %d: %v", *port, err)
   	}

   	if err := s.Serve(); err != nil {
   		log.Fatalf("Failed to start server: %v", err)
   	}
   }