SEBA-827: Implement OLT Alarms with REST and bbsimctl
          separate onu and olt alarms
          rebase
          address review comments and print alarms table for list

Change-Id: I3bc8aa03908f973c3342ec93c7399895c48639a2
diff --git a/internal/bbsimctl/commands/oltalarms.go b/internal/bbsimctl/commands/oltalarms.go
new file mode 100755
index 0000000..645aade
--- /dev/null
+++ b/internal/bbsimctl/commands/oltalarms.go
@@ -0,0 +1,145 @@
+/*
+ * Portions copyright 2019-present Open Networking Foundation
+ * Original copyright 2019-present Ciena Corporation
+ *
+ * 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 commands
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/jessevdk/go-flags"
+	"github.com/olekukonko/tablewriter"
+	pb "github.com/opencord/bbsim/api/bbsim"
+	"github.com/opencord/bbsim/internal/bbsim/alarmsim"
+	"github.com/opencord/bbsim/internal/bbsimctl/config"
+	log "github.com/sirupsen/logrus"
+)
+
+const (
+	DEFAULT_OLT_ALARM_LIST_FORMAT = "table{{ .Name }}"
+)
+
+type OltInterfaceStatus string
+
+type OltInterfaceID uint32
+
+type OltAlarmNameString string
+
+type OltAlarmListOutput struct {
+	Name string
+}
+
+type OltAlarmRaise struct {
+	Args struct {
+		Name   OltAlarmNameString
+		IntfID OltInterfaceID
+	} `positional-args:"yes" required:"yes"`
+}
+
+type OltAlarmClear struct {
+	Args struct {
+		Name   OltAlarmNameString
+		IntfID OltInterfaceID
+	} `positional-args:"yes" required:"yes"`
+}
+
+type OltAlarmList struct{}
+
+type OltAlarmOptions struct {
+	Raise OltAlarmRaise `command:"raise"`
+	Clear OltAlarmClear `command:"clear"`
+	List  OltAlarmList  `command:"list"`
+}
+
+// Execute alarm raise
+func (o *OltAlarmRaise) Execute(args []string) error {
+	client, conn := connect()
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), config.GlobalConfig.Grpc.Timeout)
+	defer cancel()
+
+	req := pb.OLTAlarmRequest{InterfaceType: string(o.Args.Name),
+		InterfaceID: uint32(o.Args.IntfID),
+		Status:      "on"}
+
+	res, err := client.SetOltAlarmIndication(ctx, &req)
+	if err != nil {
+		log.Fatalf("Cannot raise OLT alarm: %v", err)
+		return err
+	}
+
+	fmt.Println(fmt.Sprintf("[Status: %d] %s", res.StatusCode, res.Message))
+	return nil
+}
+
+// Execute alarm clear
+func (o *OltAlarmClear) Execute(args []string) error {
+	client, conn := connect()
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), config.GlobalConfig.Grpc.Timeout)
+	defer cancel()
+
+	req := pb.OLTAlarmRequest{InterfaceType: string(o.Args.Name),
+		InterfaceID: uint32(o.Args.IntfID),
+		Status:      "off"}
+
+	res, err := client.SetOltAlarmIndication(ctx, &req)
+
+	if err != nil {
+		log.Fatalf("Cannot clear OLT alarm: %v", err)
+		return err
+	}
+
+	fmt.Println(fmt.Sprintf("[Status: %d] %s", res.StatusCode, res.Message))
+	return nil
+}
+
+// Execute OLT alarm list
+func (o *OltAlarmList) Execute(args []string) error {
+	OltAlarmsValue := [][]string{}
+	OltAlarmstable := tablewriter.NewWriter(os.Stdout)
+	fmt.Fprintf(os.Stdout, "OLT Alarms List:\n")
+	OltAlarmstable.SetHeader([]string{"OLT Alarms"})
+
+	alarmNames := make([]AlarmListOutput, len(alarmsim.OltAlarmNameMap))
+	i := 0
+	for k := range alarmsim.OltAlarmNameMap {
+		alarmNames[i] = AlarmListOutput{Name: k}
+		OltAlarmsValue = append(OltAlarmsValue, []string{k})
+		i++
+	}
+	for _, v := range OltAlarmsValue {
+		OltAlarmstable.Append(v)
+	}
+	OltAlarmstable.Render()
+	return nil
+}
+
+func (o *OltAlarmNameString) Complete(match string) []flags.Completion {
+	list := make([]flags.Completion, 0)
+	for k := range alarmsim.OltAlarmNameMap {
+		if strings.HasPrefix(k, match) {
+			list = append(list, flags.Completion{Item: k})
+		}
+	}
+
+	return list
+}