Add ID field to taskMessage

asynq.go

@@ -1,5 +1,7 @@
 package asynq
 
+import "github.com/google/uuid"
+
 /*
 TODOs:
 - [P0] Write tests
@@ -26,11 +28,16 @@ type Task struct {
 // taskMessage is an internal representation of a task with additional metadata fields.
 // This data gets written in redis.
 type taskMessage struct {
-	// fields from type Task
+	//-------- Task fields --------
+
 	Type    string
 	Payload map[string]interface{}
 
-	//------- metadata fields ----------
+	//-------- metadata fields --------
+
+	// unique identifier for each task
+	ID uuid.UUID
+
 	// queue name this message should be enqueued to
 	Queue string
 

client.go

@@ -4,6 +4,7 @@ import (
 	"time"
 
 	"github.com/go-redis/redis/v7"
+	"github.com/google/uuid"
 )
 
 // Client is an interface for scheduling tasks.
@@ -20,6 +21,7 @@ func NewClient(opt *RedisOpt) *Client {
 // Process enqueues the task to be performed at a given time.
 func (c *Client) Process(task *Task, executeAt time.Time) error {
 	msg := &taskMessage{
+		ID:      uuid.New(),
 		Type:    task.Type,
 		Payload: task.Payload,
 		Queue:   "default",

rdb_test.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/go-redis/redis/v7"
 	"github.com/google/go-cmp/cmp"
+	"github.com/google/uuid"
 )
 
 var client *redis.Client
@@ -28,6 +29,7 @@ func setup() *rdb {
 func TestPush(t *testing.T) {
 	r := setup()
 	msg := &taskMessage{
+		ID:    uuid.New(),
 		Type:  "sendEmail",
 		Queue: "default",
 		Retry: 10,
@@ -54,6 +56,7 @@ func TestPush(t *testing.T) {
 func TestDequeueImmediateReturn(t *testing.T) {
 	r := setup()
 	msg := &taskMessage{
+		ID:    uuid.New(),
 		Type:  "GenerateCSVExport",
 		Queue: "csv",
 		Retry: 10,