Add Create and DeleteWorker methods

tools/mothership/admin/rpc/worker.go

@@ -20,8 +20,11 @@ import (
 	base "go.resf.org/peridot/base/go"
 	mshipadminpb "go.resf.org/peridot/tools/mothership/admin/pb"
 	mothership_db "go.resf.org/peridot/tools/mothership/db"
+	"google.golang.org/genproto/googleapis/rpc/errdetails"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
+	"google.golang.org/protobuf/types/known/emptypb"
+	"strings"
 )
 
 func (s *Server) GetWorker(_ context.Context, req *mshipadminpb.GetWorkerRequest) (*mshipadminpb.Worker, error) {
@@ -52,3 +55,60 @@ func (s *Server) ListWorkers(_ context.Context, req *mshipadminpb.ListWorkersReq
 		NextPageToken: nt,
 	}, nil
 }
+
+func (s *Server) CreateWorker(_ context.Context, req *mshipadminpb.CreateWorkerRequest) (*mshipadminpb.Worker, error) {
+	// Verify that the id is at least 4 characters long.
+	if len(req.WorkerId) < 4 {
+		return nil, status.Error(codes.InvalidArgument, "worker id must be at least 4 characters long")
+	}
+
+	// Create the worker.
+	name := base.NameGen("workers")
+	worker := &mothership_db.Worker{
+		Name:      name,
+		WorkerID:  req.WorkerId,
+		ApiSecret: base.NameGen(name),
+	}
+
+	err := base.Q[mothership_db.Worker](s.db).Create(worker)
+	if err != nil {
+		// if the error is a duplicate key error, return an already exists error.
+		if strings.Contains(err.Error(), "duplicate key") {
+			st, _ := status.
+				New(codes.AlreadyExists, "worker already exists").
+				WithDetails(&errdetails.LocalizedMessage{
+					Locale:  "en-US",
+					Message: "Worker with given ID already exists.",
+				})
+
+			return nil, st.Err()
+		}
+
+		base.LogErrorf("failed to create worker: %v", err)
+		return nil, status.Error(codes.Internal, "failed to create worker")
+	}
+	pb := worker.ToPB()
+	pb.ApiSecret = worker.ApiSecret
+
+	return pb, nil
+}
+
+func (s *Server) DeleteWorker(_ context.Context, req *mshipadminpb.DeleteWorkerRequest) (*emptypb.Empty, error) {
+	worker, err := base.Q[mothership_db.Worker](s.db).F("name", req.Name).GetOrNil()
+	if err != nil {
+		base.LogErrorf("failed to get worker: %v", err)
+		return nil, status.Error(codes.Internal, "failed to get worker")
+	}
+
+	if worker == nil {
+		return nil, status.Error(codes.NotFound, "worker not found")
+	}
+
+	err = base.Q[mothership_db.Worker](s.db).D(worker)
+	if err != nil {
+		base.LogErrorf("failed to delete worker: %v", err)
+		return nil, status.Error(codes.Internal, "failed to delete worker")
+	}
+
+	return &emptypb.Empty{}, nil
+}