Support get IPs for both guestagent and plain mode

Signed-off-by: Songpon Srisawai <[email protected]>

Author: songponssw

pkg/guestagent/api/guestservice.pb.desc

@@ -1,14 +1,16 @@
 
-�
+�
 guestservice.protogoogle/protobuf/empty.protogoogle/protobuf/timestamp.proto"0
 Info(
 local_ports
 (2.IPPortR
-localPorts"�

+localPorts"�

 Event.
 time
 
(2.google.protobuf.TimestampRtime3
 local_ports_added (2.IPPortRlocalPortsAdded7
 local_ports_removed (2.IPPortRlocalPortsRemoved
-errors (	Rerrors"H
+errors (	Rerrors
+
+json_bytes 
(R	jsonBytes"H
 IPPort
 protocol
 
(	Rprotocol
 ip 
(	Rip

pkg/guestagent/api/guestservice.pb.go

@@ -21,6 +21,7 @@ message Event {
   repeated IPPort local_ports_added = 2;
   repeated IPPort local_ports_removed = 3;
   repeated string errors = 4;
+  bytes json_bytes = 5;
 }
 
 message IPPort {

pkg/guestagent/api/guestservice.proto

@@ -5,8 +5,10 @@ package guestagent
 
 import (
 	"context"
+	"encoding/json"
 	"errors"
 	"os"
+	"os/exec"
 	"reflect"
 	"sync"
 	"syscall"
@@ -186,6 +188,24 @@ func (a *agent) collectEvent(ctx context.Context, st eventState) (*api.Event, ev
 	}
 	ev.LocalPortsAdded, ev.LocalPortsRemoved = comparePorts(st.ports, newSt.ports)
 	ev.Time = timestamppb.Now()
+
+	// Get network interfaces info
+	cmd := exec.Command("ip", "-j", "a")
+	output, err := cmd.Output()
+	if err != nil {
+		logrus.Errorf("Cannot execute command `ip -j a`")
+	}
+
+	// Wrap the output with a label key
+	// Since multiple outputs will be sent to the hostagent via this jsonBytes,
+	// this label acts as the key to identify each output separately.
+	var data any
+	if err := json.Unmarshal(output, &data); err != nil {
+		logrus.Errorf("Cannot parsing output")
+	}
+	b, _ := json.Marshal(map[string]any{"ip": data})
+	ev.JsonBytes = b
+
 	return ev, newSt
 }