Refactor function command (#1372)

pkg/fission-cli/cmd/function/get.go

@@ -0,0 +1,63 @@
+/*
+Copyright 2019 The Fission Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package function
+
+import (
+	"os"
+
+	"github.com/pkg/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	"github.com/fission/fission/pkg/controller/client"
+	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
+	"github.com/fission/fission/pkg/fission-cli/cmd"
+)
+
+type GetSubCommand struct {
+	client *client.Client
+}
+
+func Get(flags cli.Input) error {
+	opts := GetSubCommand{
+		client: cmd.GetServer(flags),
+	}
+	return opts.do(flags)
+}
+
+func (opts *GetSubCommand) do(flags cli.Input) error {
+	m, err := cmd.GetMetadata("name", "fnNamespace", flags)
+	if err != nil {
+		return err
+	}
+
+	fn, err := opts.client.FunctionGet(m)
+	if err != nil {
+		return errors.Wrap(err, "error getting function")
+	}
+
+	pkg, err := opts.client.PackageGet(&metav1.ObjectMeta{
+		Name:      fn.Spec.Package.PackageRef.Name,
+		Namespace: fn.Spec.Package.PackageRef.Namespace,
+	})
+	if err != nil {
+		return errors.Wrap(err, "error getting package")
+	}
+
+	os.Stdout.Write(pkg.Spec.Deployment.Literal)
+
+	return nil
+}