From dddb50c00f09722e835f7d1bee8d125d2e67eb30 Mon Sep 17 00:00:00 2001
From: Soam Vasani <soamvasani@platform9.com>
Date: Fri, 16 Dec 2016 00:54:06 -0800
Subject: [PATCH] cli watch impl

---
 fission/watch.go | 120 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 120 insertions(+)
 create mode 100644 fission/watch.go

diff --git a/fission/watch.go b/fission/watch.go
new file mode 100644
index 00000000..da08f861
--- /dev/null
+++ b/fission/watch.go
@@ -0,0 +1,120 @@
+/*
+Copyright 2016 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 main
+
+import (
+	"fmt"
+	"os"
+	"text/tabwriter"
+
+	"github.com/satori/go.uuid"
+	"github.com/urfave/cli"
+
+	"github.com/platform9/fission"
+)
+
+func wCreate(c *cli.Context) error {
+	client := getClient(c.GlobalString("server"))
+
+	fnName := c.String("function")
+	if len(fnName) == 0 {
+		fatal("Need a function name to create a watch, use --function")
+	}
+	fnUid := c.String("uid")
+
+	namespace := c.String("ns")
+	if len(namespace) == 0 {
+		fmt.Println("Watch 'default' namespace. Use --ns <namespace> to override.")
+		namespace = "default"
+	}
+
+	objType := c.String("type")
+	if len(objType) == 0 {
+		fmt.Println("Object type unspecified, will watch pods.  Use --type <type> to override.")
+		objType = "pod"
+	}
+
+	labels := c.String("labels")
+	// empty 'labels' selects everything
+	if len(labels) == 0 {
+		fmt.Printf("Watching all objects of type '%v', use --labels to refine selection.\n", objType)
+	}
+
+	// automatically name watches
+	watchName := uuid.NewV4().String()
+
+	w := &fission.Watch{
+		Metadata: fission.Metadata{
+			Name: watchName,
+		},
+		Function: fission.Metadata{
+			Name: fnName,
+			Uid:  fnUid,
+		},
+		Namespace:     namespace,
+		ObjType:       objType,
+		LabelSelector: labels,
+		FieldSelector: "", // TODO
+	}
+
+	_, err := client.WatchCreate(w)
+	checkErr(err, "create watch")
+
+	fmt.Printf("watch '%v' created\n", w.Metadata.Name)
+	return err
+}
+
+func wGet(c *cli.Context) error {
+	return nil
+}
+
+func wUpdate(c *cli.Context) error {
+	return nil
+}
+
+func wDelete(c *cli.Context) error {
+	client := getClient(c.GlobalString("server"))
+
+	wName := c.String("name")
+	if len(wName) == 0 {
+		fatal("Need name of watch to delete, use --name")
+	}
+
+	err := client.WatchDelete(&fission.Metadata{Name: wName})
+	checkErr(err, "delete watch")
+
+	fmt.Printf("watch '%v' deleted\n", wName)
+	return nil
+}
+
+func wList(c *cli.Context) error {
+	client := getClient(c.GlobalString("server"))
+
+	ws, err := client.WatchList()
+	checkErr(err, "list watches")
+
+	w := tabwriter.NewWriter(os.Stdout, 0, 0, 1, ' ', 0)
+
+	fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\t%v\n", "NAME", "NAMESPACE", "OBJTYPE", "LABELS", "FUNCTION_NAME", "FUNCTION_UID")
+	for _, wa := range ws {
+		fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\t%v\n",
+			wa.Metadata.Name, wa.Namespace, wa.ObjType, wa.LabelSelector, wa.Function.Name, wa.Function.Uid)
+	}
+	w.Flush()
+
+	return nil
+}