Add nil check for message encoding helpers

internal/base/base.go

@@ -200,6 +200,9 @@ type TaskMessage struct {
 
 // EncodeMessage marshals the given task message and returns an encoded bytes.
 func EncodeMessage(msg *TaskMessage) ([]byte, error) {
+	if msg == nil {
+		return nil, fmt.Errorf("cannot encode nil message")
+	}
 	payload, err := json.Marshal(msg.Payload)
 	if err != nil {
 		return nil, err
@@ -229,16 +232,16 @@ func DecodeMessage(data []byte) (*TaskMessage, error) {
 		return nil, err
 	}
 	return &TaskMessage{
-		Type:      pbmsg.Type,
+		Type:      pbmsg.GetType(),
 		Payload:   payload,
-		ID:        uuid.MustParse(pbmsg.Id),
+		ID:        uuid.MustParse(pbmsg.GetId()),
-		Queue:     pbmsg.Queue,
+		Queue:     pbmsg.GetQueue(),
-		Retry:     int(pbmsg.Retry),
+		Retry:     int(pbmsg.GetRetry()),
-		Retried:   int(pbmsg.Retried),
+		Retried:   int(pbmsg.GetRetried()),
-		ErrorMsg:  pbmsg.ErrorMsg,
+		ErrorMsg:  pbmsg.GetErrorMsg(),
-		Timeout:   pbmsg.Timeout,
+		Timeout:   pbmsg.GetTimeout(),
-		Deadline:  pbmsg.Deadline,
+		Deadline:  pbmsg.GetDeadline(),
-		UniqueKey: pbmsg.UniqueKey,
+		UniqueKey: pbmsg.GetUniqueKey(),
 	}, nil
 }
 
@@ -322,11 +325,14 @@ type ServerInfo struct {
 
 // EncodeServerInfo marshals the given ServerInfo and returns the encoded bytes.
 func EncodeServerInfo(info *ServerInfo) ([]byte, error) {
+	if info == nil {
+		return nil, fmt.Errorf("cannot encode nil server info")
+	}
 	queues := make(map[string]int32)
 	for q, p := range info.Queues {
 		queues[q] = int32(p)
 	}
-	ts, err := ptypes.TimestampProto(info.Started)
+	started, err := ptypes.TimestampProto(info.Started)
 	if err != nil {
 		return nil, err
 	}
@@ -338,7 +344,7 @@ func EncodeServerInfo(info *ServerInfo) ([]byte, error) {
 		Queues:            queues,
 		StrictPriority:    info.StrictPriority,
 		Status:            info.Status,
-		StartTime:         ts,
+		StartTime:         started,
 		ActiveWorkerCount: int32(info.ActiveWorkerCount),
 	})
 }
@@ -358,15 +364,15 @@ func DecodeServerInfo(b []byte) (*ServerInfo, error) {
 		return nil, err
 	}
 	return &ServerInfo{
-		Host:              pbmsg.Host,
+		Host:              pbmsg.GetHost(),
-		PID:               int(pbmsg.Pid),
+		PID:               int(pbmsg.GetPid()),
-		ServerID:          pbmsg.ServerId,
+		ServerID:          pbmsg.GetServerId(),
-		Concurrency:       int(pbmsg.Concurrency),
+		Concurrency:       int(pbmsg.GetConcurrency()),
 		Queues:            queues,
-		StrictPriority:    pbmsg.StrictPriority,
+		StrictPriority:    pbmsg.GetStrictPriority(),
-		Status:            pbmsg.Status,
+		Status:            pbmsg.GetStatus(),
 		Started:           startTime,
-		ActiveWorkerCount: int(pbmsg.ActiveWorkerCount),
+		ActiveWorkerCount: int(pbmsg.GetActiveWorkerCount()),
 	}, nil
 }
 
@@ -386,6 +392,9 @@ type WorkerInfo struct {
 
 // EncodeWorkerInfo marshals the given WorkerInfo and returns the encoded bytes.
 func EncodeWorkerInfo(info *WorkerInfo) ([]byte, error) {
+	if info == nil {
+		return nil, fmt.Errorf("cannot encode nil worker info")
+	}
 	payload, err := json.Marshal(info.Payload)
 	if err != nil {
 		return nil, err
@@ -440,13 +449,13 @@ func DecodeWorkerInfo(b []byte) (*WorkerInfo, error) {
 		return nil, err
 	}
 	return &WorkerInfo{
-		Host:     pbmsg.Host,
+		Host:     pbmsg.GetHost(),
-		PID:      int(pbmsg.Pid),
+		PID:      int(pbmsg.GetPid()),
-		ServerID: pbmsg.ServerId,
+		ServerID: pbmsg.GetServerId(),
-		ID:       pbmsg.TaskId,
+		ID:       pbmsg.GetTaskId(),
-		Type:     pbmsg.TaskType,
+		Type:     pbmsg.GetTaskType(),
 		Payload:  payload,
-		Queue:    pbmsg.Queue,
+		Queue:    pbmsg.GetQueue(),
 		Started:  startTime,
 		Deadline: deadline,
 	}, nil
@@ -479,6 +488,9 @@ type SchedulerEntry struct {
 
 // EncodeSchedulerEntry marshals the given entry and returns an encoded bytes.
 func EncodeSchedulerEntry(entry *SchedulerEntry) ([]byte, error) {
+	if entry == nil {
+		return nil, fmt.Errorf("cannot encode nil scheduler entry")
+	}
 	payload, err := json.Marshal(entry.Payload)
 	if err != nil {
 		return nil, err
@@ -521,11 +533,11 @@ func DecodeSchedulerEntry(b []byte) (*SchedulerEntry, error) {
 		return nil, err
 	}
 	return &SchedulerEntry{
-		ID:      pbmsg.Id,
+		ID:      pbmsg.GetId(),
-		Spec:    pbmsg.Spec,
+		Spec:    pbmsg.GetSpec(),
-		Type:    pbmsg.TaskType,
+		Type:    pbmsg.GetTaskType(),
 		Payload: payload,
-		Opts:    pbmsg.EnqueueOptions,
+		Opts:    pbmsg.GetEnqueueOptions(),
 		Next:    next,
 		Prev:    prev,
 	}, nil
@@ -543,6 +555,9 @@ type SchedulerEnqueueEvent struct {
 // EncodeSchedulerEnqueueEvent marshals the given event
 // and returns an encoded bytes.
 func EncodeSchedulerEnqueueEvent(event *SchedulerEnqueueEvent) ([]byte, error) {
+	if event == nil {
+		return nil, fmt.Errorf("cannot encode nil enqueue event")
+	}
 	enqueuedAt, err := ptypes.TimestampProto(event.EnqueuedAt)
 	if err != nil {
 		return nil, err
@@ -565,7 +580,7 @@ func DecodeSchedulerEnqueueEvent(b []byte) (*SchedulerEnqueueEvent, error) {
 		return nil, err
 	}
 	return &SchedulerEnqueueEvent{
-		TaskID:     pbmsg.TaskId,
+		TaskID:     pbmsg.GetTaskId(),
 		EnqueuedAt: enqueuedAt,
 	}, nil
 }