Store SchedulerEntry and SchedulerEnqueueEvent in protobuf format

internal/base/base.go

@@ -224,10 +224,8 @@ func DecodeMessage(data []byte) (*TaskMessage, error) {
 	if err := proto.Unmarshal(data, &pbmsg); err != nil {
 		return nil, err
 	}
-	d := json.NewDecoder(bytes.NewReader(pbmsg.Payload))
+	payload, err := decodePayload(pbmsg.GetPayload())
-	d.UseNumber()
+	if err != nil {
-	payload := make(map[string]interface{})
-	if err := d.Decode(&payload); err != nil {
 		return nil, err
 	}
 	return &TaskMessage{
@@ -413,16 +411,24 @@ func EncodeWorkerInfo(info *WorkerInfo) ([]byte, error) {
 	})
 }
 
+func decodePayload(b []byte) (map[string]interface{}, error) {
+	d := json.NewDecoder(bytes.NewReader(b))
+	d.UseNumber()
+	payload := make(map[string]interface{})
+	if err := d.Decode(&payload); err != nil {
+		return nil, err
+	}
+	return payload, nil
+}
+
 // DecodeWorkerInfo decodes the given bytes into WorkerInfo.
 func DecodeWorkerInfo(b []byte) (*WorkerInfo, error) {
 	var pbmsg pb.WorkerInfo
 	if err := proto.Unmarshal(b, &pbmsg); err != nil {
 		return nil, err
 	}
-	d := json.NewDecoder(bytes.NewReader(pbmsg.GetTaskPayload()))
+	payload, err := decodePayload(pbmsg.GetTaskPayload())
-	d.UseNumber()
+	if err != nil {
-	payload := make(map[string]interface{})
-	if err := d.Decode(&payload); err != nil {
 		return nil, err
 	}
 	startTime, err := ptypes.Timestamp(pbmsg.GetStartTime())
@@ -471,6 +477,60 @@ type SchedulerEntry struct {
 	Prev time.Time
 }
 
+// EncodeSchedulerEntry marshals the given entry and returns an encoded bytes.
+func EncodeSchedulerEntry(entry *SchedulerEntry) ([]byte, error) {
+	payload, err := json.Marshal(entry.Payload)
+	if err != nil {
+		return nil, err
+	}
+	next, err := ptypes.TimestampProto(entry.Next)
+	if err != nil {
+		return nil, err
+	}
+	prev, err := ptypes.TimestampProto(entry.Prev)
+	if err != nil {
+		return nil, err
+	}
+	return proto.Marshal(&pb.SchedulerEntry{
+		Id:              entry.ID,
+		Spec:            entry.Spec,
+		TaskType:        entry.Type,
+		TaskPayload:     payload,
+		EnqueueOptions:  entry.Opts,
+		NextEnqueueTime: next,
+		PrevEnqueueTime: prev,
+	})
+}
+
+// DecodeSchedulerEntry unmarshals the given bytes and returns a decoded SchedulerEntry.
+func DecodeSchedulerEntry(b []byte) (*SchedulerEntry, error) {
+	var pbmsg pb.SchedulerEntry
+	if err := proto.Unmarshal(b, &pbmsg); err != nil {
+		return nil, err
+	}
+	payload, err := decodePayload(pbmsg.GetTaskPayload())
+	if err != nil {
+		return nil, err
+	}
+	next, err := ptypes.Timestamp(pbmsg.GetNextEnqueueTime())
+	if err != nil {
+		return nil, err
+	}
+	prev, err := ptypes.Timestamp(pbmsg.GetPrevEnqueueTime())
+	if err != nil {
+		return nil, err
+	}
+	return &SchedulerEntry{
+		ID:      pbmsg.Id,
+		Spec:    pbmsg.Spec,
+		Type:    pbmsg.TaskType,
+		Payload: payload,
+		Opts:    pbmsg.EnqueueOptions,
+		Next:    next,
+		Prev:    prev,
+	}, nil
+}
+
 // SchedulerEnqueueEvent holds information about an enqueue event by a scheduler.
 type SchedulerEnqueueEvent struct {
 	// ID of the task that was enqueued.
@@ -480,6 +540,36 @@ type SchedulerEnqueueEvent struct {
 	EnqueuedAt time.Time
 }
 
+// EncodeSchedulerEnqueueEvent marshals the given event
+// and returns an encoded bytes.
+func EncodeSchedulerEnqueueEvent(event *SchedulerEnqueueEvent) ([]byte, error) {
+	enqueuedAt, err := ptypes.TimestampProto(event.EnqueuedAt)
+	if err != nil {
+		return nil, err
+	}
+	return proto.Marshal(&pb.SchedulerEnqueueEvent{
+		TaskId:      event.TaskID,
+		EnqueueTime: enqueuedAt,
+	})
+}
+
+// DecodeSchedulerEnqueueEvent unmarshals the given bytes
+// and returns a decoded SchedulerEnqueueEvent.
+func DecodeSchedulerEnqueueEvent(b []byte) (*SchedulerEnqueueEvent, error) {
+	var pbmsg pb.SchedulerEnqueueEvent
+	if err := proto.Unmarshal(b, &pbmsg); err != nil {
+		return nil, err
+	}
+	enqueuedAt, err := ptypes.Timestamp(pbmsg.GetEnqueueTime())
+	if err != nil {
+		return nil, err
+	}
+	return &SchedulerEnqueueEvent{
+		TaskID:     pbmsg.TaskId,
+		EnqueuedAt: enqueuedAt,
+	}, nil
+}
+
 // Cancelations is a collection that holds cancel functions for all active tasks.
 //
 // Cancelations are safe for concurrent use by multipel goroutines.

internal/base/base_test.go

@@ -446,6 +446,71 @@ func TestWorkerInfoEncoding(t *testing.T) {
 	}
 }
 
+func TestSchedulerEntryEncoding(t *testing.T) {
+	tests := []struct {
+		entry SchedulerEntry
+	}{
+		{
+			entry: SchedulerEntry{
+				ID:      uuid.NewString(),
+				Spec:    "* * * * *",
+				Type:    "task_A",
+				Payload: map[string]interface{}{"foo": "bar"},
+				Opts:    []string{"Queue('email')"},
+				Next:    time.Now().Add(30 * time.Second).UTC(),
+				Prev:    time.Now().Add(-2 * time.Minute).UTC(),
+			},
+		},
+	}
+
+	for _, tc := range tests {
+		encoded, err := EncodeSchedulerEntry(&tc.entry)
+		if err != nil {
+			t.Errorf("EncodeSchedulerEntry(entry) returned error: %v", err)
+			continue
+		}
+		decoded, err := DecodeSchedulerEntry(encoded)
+		if err != nil {
+			t.Errorf("DecodeSchedulerEntry(encoded) returned error: %v", err)
+			continue
+		}
+		if diff := cmp.Diff(&tc.entry, decoded); diff != "" {
+			t.Errorf("Decoded SchedulerEntry == %+v, want %+v;(-want,+got)\n%s",
+				decoded, tc.entry, diff)
+		}
+	}
+}
+
+func TestSchedulerEnqueueEventEncoding(t *testing.T) {
+	tests := []struct {
+		event SchedulerEnqueueEvent
+	}{
+		{
+			event: SchedulerEnqueueEvent{
+				TaskID:     uuid.NewString(),
+				EnqueuedAt: time.Now().Add(-30 * time.Second).UTC(),
+			},
+		},
+	}
+
+	for _, tc := range tests {
+		encoded, err := EncodeSchedulerEnqueueEvent(&tc.event)
+		if err != nil {
+			t.Errorf("EncodeSchedulerEnqueueEvent(event) returned error: %v", err)
+			continue
+		}
+		decoded, err := DecodeSchedulerEnqueueEvent(encoded)
+		if err != nil {
+			t.Errorf("DecodeSchedulerEnqueueEvent(encoded) returned error: %v", err)
+			continue
+		}
+		if diff := cmp.Diff(&tc.event, decoded); diff != "" {
+			t.Errorf("Decoded SchedulerEnqueueEvent == %+v, want %+v;(-want,+got)\n%s",
+				decoded, tc.event, diff)
+		}
+	}
+}
+
 // Test for status being accessed by multiple goroutines.
 // Run with -race flag to check for data race.
 func TestStatusConcurrentAccess(t *testing.T) {

internal/proto/asynq.pb.go

@@ -369,6 +369,168 @@ func (x *WorkerInfo) GetDeadline() *timestamppb.Timestamp {
 	return nil
 }
 
+// SchedulerEntry holds information about a periodic task registered with a scheduler.
+type SchedulerEntry struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Identifier of the scheduler entry.
+	Id string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	// Periodic schedule spec of the entry.
+	Spec string `protobuf:"bytes,2,opt,name=spec,proto3" json:"spec,omitempty"`
+	// Task type of the periodic task.
+	TaskType string `protobuf:"bytes,3,opt,name=task_type,json=taskType,proto3" json:"task_type,omitempty"`
+	// Task payload of the periodic task.
+	TaskPayload []byte `protobuf:"bytes,4,opt,name=task_payload,json=taskPayload,proto3" json:"task_payload,omitempty"`
+	// Options used to enqueue the periodic task.
+	EnqueueOptions []string `protobuf:"bytes,5,rep,name=enqueue_options,json=enqueueOptions,proto3" json:"enqueue_options,omitempty"`
+	// Next time the task will be enqueued.
+	NextEnqueueTime *timestamppb.Timestamp `protobuf:"bytes,6,opt,name=next_enqueue_time,json=nextEnqueueTime,proto3" json:"next_enqueue_time,omitempty"`
+	// Last time the task was enqueued.
+	// Zero time if task was never enqueued.
+	PrevEnqueueTime *timestamppb.Timestamp `protobuf:"bytes,7,opt,name=prev_enqueue_time,json=prevEnqueueTime,proto3" json:"prev_enqueue_time,omitempty"`
+}
+
+func (x *SchedulerEntry) Reset() {
+	*x = SchedulerEntry{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_asynq_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SchedulerEntry) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SchedulerEntry) ProtoMessage() {}
+
+func (x *SchedulerEntry) ProtoReflect() protoreflect.Message {
+	mi := &file_asynq_proto_msgTypes[3]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SchedulerEntry.ProtoReflect.Descriptor instead.
+func (*SchedulerEntry) Descriptor() ([]byte, []int) {
+	return file_asynq_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *SchedulerEntry) GetId() string {
+	if x != nil {
+		return x.Id
+	}
+	return ""
+}
+
+func (x *SchedulerEntry) GetSpec() string {
+	if x != nil {
+		return x.Spec
+	}
+	return ""
+}
+
+func (x *SchedulerEntry) GetTaskType() string {
+	if x != nil {
+		return x.TaskType
+	}
+	return ""
+}
+
+func (x *SchedulerEntry) GetTaskPayload() []byte {
+	if x != nil {
+		return x.TaskPayload
+	}
+	return nil
+}
+
+func (x *SchedulerEntry) GetEnqueueOptions() []string {
+	if x != nil {
+		return x.EnqueueOptions
+	}
+	return nil
+}
+
+func (x *SchedulerEntry) GetNextEnqueueTime() *timestamppb.Timestamp {
+	if x != nil {
+		return x.NextEnqueueTime
+	}
+	return nil
+}
+
+func (x *SchedulerEntry) GetPrevEnqueueTime() *timestamppb.Timestamp {
+	if x != nil {
+		return x.PrevEnqueueTime
+	}
+	return nil
+}
+
+// SchedulerEnqueueEvent holds information about an enqueue event by a scheduler.
+type SchedulerEnqueueEvent struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// ID of the task that was enqueued.
+	TaskId string `protobuf:"bytes,1,opt,name=task_id,json=taskId,proto3" json:"task_id,omitempty"`
+	// Time the task was enqueued.
+	EnqueueTime *timestamppb.Timestamp `protobuf:"bytes,2,opt,name=enqueue_time,json=enqueueTime,proto3" json:"enqueue_time,omitempty"`
+}
+
+func (x *SchedulerEnqueueEvent) Reset() {
+	*x = SchedulerEnqueueEvent{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_asynq_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SchedulerEnqueueEvent) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SchedulerEnqueueEvent) ProtoMessage() {}
+
+func (x *SchedulerEnqueueEvent) ProtoReflect() protoreflect.Message {
+	mi := &file_asynq_proto_msgTypes[4]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SchedulerEnqueueEvent.ProtoReflect.Descriptor instead.
+func (*SchedulerEnqueueEvent) Descriptor() ([]byte, []int) {
+	return file_asynq_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *SchedulerEnqueueEvent) GetTaskId() string {
+	if x != nil {
+		return x.TaskId
+	}
+	return ""
+}
+
+func (x *SchedulerEnqueueEvent) GetEnqueueTime() *timestamppb.Timestamp {
+	if x != nil {
+		return x.EnqueueTime
+	}
+	return nil
+}
+
 var File_asynq_proto protoreflect.FileDescriptor
 
 var file_asynq_proto_rawDesc = []byte{
@@ -436,10 +598,36 @@ var file_asynq_proto_rawDesc = []byte{
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+	0x6f, 0x74, 0x6f, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -454,24 +642,29 @@ func file_asynq_proto_rawDescGZIP() []byte {
 	return file_asynq_proto_rawDescData
 }
 
-var file_asynq_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
+var file_asynq_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
 var file_asynq_proto_goTypes = []interface{}{
 	(*TaskMessage)(nil),           // 0: tutorial.TaskMessage
 	(*ServerInfo)(nil),            // 1: tutorial.ServerInfo
 	(*WorkerInfo)(nil),            // 2: tutorial.WorkerInfo
-	nil,                           // 3: tutorial.ServerInfo.QueuesEntry
+	(*SchedulerEntry)(nil),        // 3: tutorial.SchedulerEntry
-	(*timestamppb.Timestamp)(nil), // 4: google.protobuf.Timestamp
+	(*SchedulerEnqueueEvent)(nil), // 4: tutorial.SchedulerEnqueueEvent
+	nil,                           // 5: tutorial.ServerInfo.QueuesEntry
+	(*timestamppb.Timestamp)(nil), // 6: google.protobuf.Timestamp
 }
 var file_asynq_proto_depIdxs = []int32{
-	3, // 0: tutorial.ServerInfo.queues:type_name -> tutorial.ServerInfo.QueuesEntry
+	5, // 0: tutorial.ServerInfo.queues:type_name -> tutorial.ServerInfo.QueuesEntry
-	4, // 1: tutorial.ServerInfo.start_time:type_name -> google.protobuf.Timestamp
+	6, // 1: tutorial.ServerInfo.start_time:type_name -> google.protobuf.Timestamp
-	4, // 2: tutorial.WorkerInfo.start_time:type_name -> google.protobuf.Timestamp
+	6, // 2: tutorial.WorkerInfo.start_time:type_name -> google.protobuf.Timestamp
-	4, // 3: tutorial.WorkerInfo.deadline:type_name -> google.protobuf.Timestamp
+	6, // 3: tutorial.WorkerInfo.deadline:type_name -> google.protobuf.Timestamp
-	4, // [4:4] is the sub-list for method output_type
+	6, // 4: tutorial.SchedulerEntry.next_enqueue_time:type_name -> google.protobuf.Timestamp
-	4, // [4:4] is the sub-list for method input_type
+	6, // 5: tutorial.SchedulerEntry.prev_enqueue_time:type_name -> google.protobuf.Timestamp
-	4, // [4:4] is the sub-list for extension type_name
+	6, // 6: tutorial.SchedulerEnqueueEvent.enqueue_time:type_name -> google.protobuf.Timestamp
-	4, // [4:4] is the sub-list for extension extendee
+	7, // [7:7] is the sub-list for method output_type
-	0, // [0:4] is the sub-list for field type_name
+	7, // [7:7] is the sub-list for method input_type
+	7, // [7:7] is the sub-list for extension type_name
+	7, // [7:7] is the sub-list for extension extendee
+	0, // [0:7] is the sub-list for field type_name
 }
 
 func init() { file_asynq_proto_init() }
@@ -516,6 +709,30 @@ func file_asynq_proto_init() {
 				return nil
 			}
 		}
+		file_asynq_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SchedulerEntry); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_asynq_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SchedulerEnqueueEvent); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
@@ -523,7 +740,7 @@ func file_asynq_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_asynq_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   4,
+			NumMessages:   6,
 			NumExtensions: 0,
 			NumServices:   0,
 		},

internal/proto/asynq.proto

@@ -1,10 +1,12 @@
 syntax = "proto3";
-package tutorial;
+package asynq;
 
 import "google/protobuf/timestamp.proto";
 
 option go_package = "github.com/hibiken/asynq/internal/proto";
 
+// TaskMessage is the internal representation of a task with additional metadata fields.
+// See base.TaskMessage for details of each field.
 message TaskMessage {
   string type = 1;
 
@@ -51,4 +53,38 @@ message WorkerInfo {
   string queue = 7;
   google.protobuf.Timestamp start_time = 8;
   google.protobuf.Timestamp deadline = 9;
+};
+
+// SchedulerEntry holds information about a periodic task registered with a scheduler.
+message SchedulerEntry {
+	// Identifier of the scheduler entry.
+	string id = 1;
+
+	// Periodic schedule spec of the entry.
+	string spec = 2;
+
+	// Task type of the periodic task.
+	string task_type = 3;
+
+	// Task payload of the periodic task.
+	bytes task_payload = 4;
+
+	// Options used to enqueue the periodic task.
+	repeated string enqueue_options = 5;
+
+	// Next time the task will be enqueued.
+  google.protobuf.Timestamp next_enqueue_time = 6;
+
+	// Last time the task was enqueued.
+	// Zero time if task was never enqueued.
+  google.protobuf.Timestamp prev_enqueue_time = 7;
+};
+
+// SchedulerEnqueueEvent holds information about an enqueue event by a scheduler.
+message SchedulerEnqueueEvent {
+	// ID of the task that was enqueued.
+  string task_id = 1;
+
+	// Time the task was enqueued.
+  google.protobuf.Timestamp enqueue_time = 2;
 };

internal/rdb/inspect.go

@@ -5,7 +5,6 @@
 package rdb
 
 import (
-	"encoding/json"
 	"fmt"
 	"strings"
 	"time"
@@ -1082,11 +1081,11 @@ func (r *RDB) ListSchedulerEntries() ([]*base.SchedulerEntry, error) {
 			continue // skip bad data
 		}
 		for _, s := range data {
-			var e base.SchedulerEntry
+			e, err := base.DecodeSchedulerEntry([]byte(s))
-			if err := json.Unmarshal([]byte(s), &e); err != nil {
+			if err != nil {
 				continue // skip bad data
 			}
-			entries = append(entries, &e)
+			entries = append(entries, e)
 		}
 	}
 	return entries, nil
@@ -1105,11 +1104,11 @@ func (r *RDB) ListSchedulerEnqueueEvents(entryID string, pgn Pagination) ([]*bas
 		if err != nil {
 			return nil, err
 		}
-		var e base.SchedulerEnqueueEvent
+		e, err := base.DecodeSchedulerEnqueueEvent([]byte(data))
-		if err := json.Unmarshal([]byte(data), &e); err != nil {
+		if err != nil {
 			return nil, err
 		}
-		events = append(events, &e)
+		events = append(events, e)
 	}
 	return events, nil
 }

internal/rdb/rdb.go

@@ -6,7 +6,6 @@
 package rdb
 
 import (
-	"encoding/json"
 	"errors"
 	"fmt"
 	"time"
@@ -706,7 +705,7 @@ return redis.status_reply("OK")`)
 func (r *RDB) WriteSchedulerEntries(schedulerID string, entries []*base.SchedulerEntry, ttl time.Duration) error {
 	args := []interface{}{ttl.Seconds()}
 	for _, e := range entries {
-		bytes, err := json.Marshal(e)
+		bytes, err := base.EncodeSchedulerEntry(e)
 		if err != nil {
 			continue // skip bad data
 		}
@@ -761,7 +760,7 @@ const maxEvents = 1000
 // RecordSchedulerEnqueueEvent records the time when the given task was enqueued.
 func (r *RDB) RecordSchedulerEnqueueEvent(entryID string, event *base.SchedulerEnqueueEvent) error {
 	key := base.SchedulerHistoryKey(entryID)
-	data, err := json.Marshal(event)
+	data, err := base.EncodeSchedulerEnqueueEvent(event)
 	if err != nil {
 		return err
 	}