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Return Result struct to caller of Enqueue

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This commit is contained in:
Ken Hibino 2020-07-03 05:49:52 -07:00
parent 8b60e6a268
commit 34b90ecc8a
7 changed files with 201 additions and 48 deletions
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1
CHANGELOG.md
View File

@ -13,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
- Tasks that exceed its deadline are automatically retried.
- Encoding schema for task message has changed. Please install the lastest CLI and run `migrate` command if
you have tasks enqueued by the previous version of asynq.
- API of `(*Client).Enqueue`, `(*Client).EnqueueIn`, and `(*Client).EnqueueAt` has changed to return a `*Result`.
## [0.9.4] - 2020-06-13

12
README.md
View File

@ -157,10 +157,11 @@ func main() {
// ------------------------------------------------------
t := tasks.NewEmailDeliveryTask(42, "some:template:id")
err := c.Enqueue(t)
res, err := c.Enqueue(t)
if err != nil {
log.Fatal("could not enqueue task: %v", err)
}
fmt.Printf("Enqueued Result: %+v\n", res)
// ------------------------------------------------------------
@ -169,10 +170,11 @@ func main() {
// ------------------------------------------------------------
t = tasks.NewEmailDeliveryTask(42, "other:template:id")
err = c.EnqueueIn(24*time.Hour, t)
res, err = c.EnqueueIn(24*time.Hour, t)
if err != nil {
log.Fatal("could not schedule task: %v", err)
}
fmt.Printf("Enqueued Result: %+v\n", res)
// ----------------------------------------------------------------------------
@ -183,10 +185,11 @@ func main() {
c.SetDefaultOptions(tasks.ImageProcessing, asynq.MaxRetry(10), asynq.Timeout(time.Minute))
t = tasks.NewImageProcessingTask("some/blobstore/url", "other/blobstore/url")
err = c.Enqueue(t)
res, err = c.Enqueue(t)
if err != nil {
log.Fatal("could not enqueue task: %v", err)
}
fmt.Printf("Enqueued Result: %+v\n", res)
// ---------------------------------------------------------------------------
// Example 4: Pass options to tune task processing behavior at enqueue time.
@ -194,10 +197,11 @@ func main() {
// ---------------------------------------------------------------------------
t = tasks.NewImageProcessingTask("some/blobstore/url", "other/blobstore/url")
err = c.Enqueue(t, asynq.Queue("critical"), asynq.Timeout(30*time.Second))
res, err = c.Enqueue(t, asynq.Queue("critical"), asynq.Timeout(30*time.Second))
if err != nil {
log.Fatal("could not enqueue task: %v", err)
}
fmt.Printf("Enqueued Result: %+v\n", res)
}
```

18
benchmark_test.go
View File

@ -33,7 +33,7 @@ func BenchmarkEndToEndSimple(b *testing.B) {
// Create a bunch of tasks
for i := 0; i < count; i++ {
t := NewTask(fmt.Sprintf("task%d", i), map[string]interface{}{"data": i})
if err := client.Enqueue(t); err != nil {
if _, err := client.Enqueue(t); err != nil {
b.Fatalf("could not enqueue a task: %v", err)
}
}
@ -76,13 +76,13 @@ func BenchmarkEndToEnd(b *testing.B) {
// Create a bunch of tasks
for i := 0; i < count; i++ {
t := NewTask(fmt.Sprintf("task%d", i), map[string]interface{}{"data": i})
if err := client.Enqueue(t); err != nil {
if _, err := client.Enqueue(t); err != nil {
b.Fatalf("could not enqueue a task: %v", err)
}
}
for i := 0; i < count; i++ {
t := NewTask(fmt.Sprintf("scheduled%d", i), map[string]interface{}{"data": i})
if err := client.EnqueueAt(time.Now().Add(time.Second), t); err != nil {
if _, err := client.EnqueueAt(time.Now().Add(time.Second), t); err != nil {
b.Fatalf("could not enqueue a task: %v", err)
}
}
@ -144,19 +144,19 @@ func BenchmarkEndToEndMultipleQueues(b *testing.B) {
// Create a bunch of tasks
for i := 0; i < highCount; i++ {
t := NewTask(fmt.Sprintf("task%d", i), map[string]interface{}{"data": i})
if err := client.Enqueue(t, Queue("high")); err != nil {
if _, err := client.Enqueue(t, Queue("high")); err != nil {
b.Fatalf("could not enqueue a task: %v", err)
}
}
for i := 0; i < defaultCount; i++ {
t := NewTask(fmt.Sprintf("task%d", i), map[string]interface{}{"data": i})
if err := client.Enqueue(t); err != nil {
if _, err := client.Enqueue(t); err != nil {
b.Fatalf("could not enqueue a task: %v", err)
}
}
for i := 0; i < lowCount; i++ {
t := NewTask(fmt.Sprintf("task%d", i), map[string]interface{}{"data": i})
if err := client.Enqueue(t, Queue("low")); err != nil {
if _, err := client.Enqueue(t, Queue("low")); err != nil {
b.Fatalf("could not enqueue a task: %v", err)
}
}
@ -200,14 +200,14 @@ func BenchmarkClientWhileServerRunning(b *testing.B) {
// Enqueue 10,000 tasks.
for i := 0; i < count; i++ {
t := NewTask(fmt.Sprintf("task%d", i), map[string]interface{}{"data": i})
if err := client.Enqueue(t); err != nil {
if _, err := client.Enqueue(t); err != nil {
b.Fatalf("could not enqueue a task: %v", err)
}
}
// Schedule 10,000 tasks.
for i := 0; i < count; i++ {
t := NewTask(fmt.Sprintf("scheduled%d", i), map[string]interface{}{"data": i})
if err := client.EnqueueAt(time.Now().Add(time.Second), t); err != nil {
if _, err := client.EnqueueAt(time.Now().Add(time.Second), t); err != nil {
b.Fatalf("could not enqueue a task: %v", err)
}
}
@ -223,7 +223,7 @@ func BenchmarkClientWhileServerRunning(b *testing.B) {
enqueued := 0
for enqueued < 100000 {
t := NewTask(fmt.Sprintf("enqueued%d", enqueued), map[string]interface{}{"data": enqueued})
if err := client.Enqueue(t); err != nil {
if _, err := client.Enqueue(t); err != nil {
b.Logf("could not enqueue task %d: %v", enqueued, err)
continue
}

52
client.go
View File

@ -200,6 +200,35 @@ func (c *Client) SetDefaultOptions(taskType string, opts ...Option) {
c.opts[taskType] = opts
}
// A Result holds enqueued task's metadata.
type Result struct {
// ID is a unique identifier for the task.
ID string
// Retry is the maximum number of retry for the task.
Retry int
// Queue is a name of the queue the task is enqueued to.
Queue string
// Timeout is the timeout value for the task.
// Counting for timeout starts when a worker starts processing the task.
// If task processing doesn't complete within the timeout, the task will be retried.
// The value zero means no timeout.
//
// If deadline is set, min(now+timeout, deadline) is used, where the now is the time when
// a worker starts processing the task.
Timeout time.Duration
// Deadline is the deadline value for the task.
// If task processing doesn't complete before the deadline, the task will be retried.
// The value time.Unix(0, 0) means no deadline.
//
// If timeout is set, min(now+timeout, deadline) is used, where the now is the time when
// a worker starts processing the task.
Deadline time.Time
}
// EnqueueAt schedules task to be enqueued at the specified time.
//
// EnqueueAt returns nil if the task is scheduled successfully, otherwise returns a non-nil error.
@ -207,7 +236,7 @@ func (c *Client) SetDefaultOptions(taskType string, opts ...Option) {
// The argument opts specifies the behavior of task processing.
// If there are conflicting Option values the last one overrides others.
// By deafult, max retry is set to 25 and timeout is set to 30 minutes.
func (c *Client) EnqueueAt(t time.Time, task *Task, opts ...Option) error {
func (c *Client) EnqueueAt(t time.Time, task *Task, opts ...Option) (*Result, error) {
return c.enqueueAt(t, task, opts...)
}
@ -218,7 +247,7 @@ func (c *Client) EnqueueAt(t time.Time, task *Task, opts ...Option) error {
// The argument opts specifies the behavior of task processing.
// If there are conflicting Option values the last one overrides others.
// By deafult, max retry is set to 25 and timeout is set to 30 minutes.
func (c *Client) Enqueue(task *Task, opts ...Option) error {
func (c *Client) Enqueue(task *Task, opts ...Option) (*Result, error) {
return c.enqueueAt(time.Now(), task, opts...)
}
@ -229,7 +258,7 @@ func (c *Client) Enqueue(task *Task, opts ...Option) error {
// The argument opts specifies the behavior of task processing.
// If there are conflicting Option values the last one overrides others.
// By deafult, max retry is set to 25 and timeout is set to 30 minutes.
func (c *Client) EnqueueIn(d time.Duration, task *Task, opts ...Option) error {
func (c *Client) EnqueueIn(d time.Duration, task *Task, opts ...Option) (*Result, error) {
return c.enqueueAt(time.Now().Add(d), task, opts...)
}
@ -238,7 +267,7 @@ func (c *Client) Close() error {
return c.rdb.Close()
}
func (c *Client) enqueueAt(t time.Time, task *Task, opts ...Option) error {
func (c *Client) enqueueAt(t time.Time, task *Task, opts ...Option) (*Result, error) {
c.mu.Lock()
defer c.mu.Unlock()
if defaults, ok := c.opts[task.Type]; ok {
@ -274,10 +303,19 @@ func (c *Client) enqueueAt(t time.Time, task *Task, opts ...Option) error {
} else {
err = c.schedule(msg, t, opt.uniqueTTL)
}
if err == rdb.ErrDuplicateTask {
return fmt.Errorf("%w", ErrDuplicateTask)
switch {
case err == rdb.ErrDuplicateTask:
return nil, fmt.Errorf("%w", ErrDuplicateTask)
case err != nil:
return nil, err
}
return err
return &Result{
ID: msg.ID.String(),
Queue: msg.Queue,
Retry: msg.Retry,
Timeout: timeout,
Deadline: deadline,
}, nil
}
func (c *Client) enqueue(msg *base.TaskMessage, uniqueTTL time.Duration) error {

130
client_test.go
View File

@ -34,6 +34,7 @@ func TestClientEnqueueAt(t *testing.T) {
task *Task
processAt time.Time
opts []Option
wantRes *Result
wantEnqueued map[string][]*base.TaskMessage
wantScheduled []h.ZSetEntry
}{
@ -42,6 +43,12 @@ func TestClientEnqueueAt(t *testing.T) {
task: task,
processAt: now,
opts: []Option{},
wantRes: &Result{
Queue: "default",
Retry: defaultMaxRetry,
Timeout: defaultTimeout,
Deadline: noDeadline,
},
wantEnqueued: map[string][]*base.TaskMessage{
"default": {
{
@ -61,6 +68,12 @@ func TestClientEnqueueAt(t *testing.T) {
task: task,
processAt: oneHourLater,
opts: []Option{},
wantRes: &Result{
Queue: "default",
Retry: defaultMaxRetry,
Timeout: defaultTimeout,
Deadline: noDeadline,
},
wantEnqueued: nil, // db is flushed in setup so list does not exist hence nil
wantScheduled: []h.ZSetEntry{
{
@ -81,11 +94,15 @@ func TestClientEnqueueAt(t *testing.T) {
for _, tc := range tests {
h.FlushDB(t, r) // clean up db before each test case.
err := client.EnqueueAt(tc.processAt, tc.task, tc.opts...)
gotRes, err := client.EnqueueAt(tc.processAt, tc.task, tc.opts...)
if err != nil {
t.Error(err)
continue
}
if diff := cmp.Diff(tc.wantRes, gotRes, cmpopts.IgnoreFields(Result{}, "ID")); diff != "" {
t.Errorf("%s;\nEnqueueAt(processAt, task) returned %v, want %v; (-want,+got)\n%s",
tc.desc, gotRes, tc.wantRes, diff)
}
for qname, want := range tc.wantEnqueued {
gotEnqueued := h.GetEnqueuedMessages(t, r, qname)
@ -114,6 +131,7 @@ func TestClientEnqueue(t *testing.T) {
desc string
task *Task
opts []Option
wantRes *Result
wantEnqueued map[string][]*base.TaskMessage
}{
{
@ -122,6 +140,12 @@ func TestClientEnqueue(t *testing.T) {
opts: []Option{
MaxRetry(3),
},
wantRes: &Result{
Queue: "default",
Retry: 3,
Timeout: defaultTimeout,
Deadline: noDeadline,
},
wantEnqueued: map[string][]*base.TaskMessage{
"default": {
{
@ -141,6 +165,12 @@ func TestClientEnqueue(t *testing.T) {
opts: []Option{
MaxRetry(-2),
},
wantRes: &Result{
Queue: "default",
Retry: 0,
Timeout: defaultTimeout,
Deadline: noDeadline,
},
wantEnqueued: map[string][]*base.TaskMessage{
"default": {
{
@ -161,6 +191,12 @@ func TestClientEnqueue(t *testing.T) {
MaxRetry(2),
MaxRetry(10),
},
wantRes: &Result{
Queue: "default",
Retry: 10,
Timeout: defaultTimeout,
Deadline: noDeadline,
},
wantEnqueued: map[string][]*base.TaskMessage{
"default": {
{
@ -180,6 +216,12 @@ func TestClientEnqueue(t *testing.T) {
opts: []Option{
Queue("custom"),
},
wantRes: &Result{
Queue: "custom",
Retry: defaultMaxRetry,
Timeout: defaultTimeout,
Deadline: noDeadline,
},
wantEnqueued: map[string][]*base.TaskMessage{
"custom": {
{
@ -199,6 +241,12 @@ func TestClientEnqueue(t *testing.T) {
opts: []Option{
Queue("HIGH"),
},
wantRes: &Result{
Queue: "high",
Retry: defaultMaxRetry,
Timeout: defaultTimeout,
Deadline: noDeadline,
},
wantEnqueued: map[string][]*base.TaskMessage{
"high": {
{
@ -218,6 +266,12 @@ func TestClientEnqueue(t *testing.T) {
opts: []Option{
Timeout(20 * time.Second),
},
wantRes: &Result{
Queue: "default",
Retry: defaultMaxRetry,
Timeout: 20 * time.Second,
Deadline: noDeadline,
},
wantEnqueued: map[string][]*base.TaskMessage{
"default": {
{
@ -237,6 +291,12 @@ func TestClientEnqueue(t *testing.T) {
opts: []Option{
Deadline(time.Date(2020, time.June, 24, 0, 0, 0, 0, time.UTC)),
},
wantRes: &Result{
Queue: "default",
Retry: defaultMaxRetry,
Timeout: noTimeout,
Deadline: time.Date(2020, time.June, 24, 0, 0, 0, 0, time.UTC),
},
wantEnqueued: map[string][]*base.TaskMessage{
"default": {
{
@ -257,6 +317,12 @@ func TestClientEnqueue(t *testing.T) {
Timeout(20 * time.Second),
Deadline(time.Date(2020, time.June, 24, 0, 0, 0, 0, time.UTC)),
},
wantRes: &Result{
Queue: "default",
Retry: defaultMaxRetry,
Timeout: 20 * time.Second,
Deadline: time.Date(2020, time.June, 24, 0, 0, 0, 0, time.UTC),
},
wantEnqueued: map[string][]*base.TaskMessage{
"default": {
{
@ -275,11 +341,15 @@ func TestClientEnqueue(t *testing.T) {
for _, tc := range tests {
h.FlushDB(t, r) // clean up db before each test case.
err := client.Enqueue(tc.task, tc.opts...)
gotRes, err := client.Enqueue(tc.task, tc.opts...)
if err != nil {
t.Error(err)
continue
}
if diff := cmp.Diff(tc.wantRes, gotRes, cmpopts.IgnoreFields(Result{}, "ID")); diff != "" {
t.Errorf("%s;\nEnqueue(task) returned %v, want %v; (-want,+got)\n%s",
tc.desc, gotRes, tc.wantRes, diff)
}
for qname, want := range tc.wantEnqueued {
got := h.GetEnqueuedMessages(t, r, qname)
@ -304,6 +374,7 @@ func TestClientEnqueueIn(t *testing.T) {
task *Task
delay time.Duration
opts []Option
wantRes *Result
wantEnqueued map[string][]*base.TaskMessage
wantScheduled []h.ZSetEntry
}{
@ -312,6 +383,12 @@ func TestClientEnqueueIn(t *testing.T) {
task: task,
delay: time.Hour,
opts: []Option{},
wantRes: &Result{
Queue: "default",
Retry: defaultMaxRetry,
Timeout: defaultTimeout,
Deadline: noDeadline,
},
wantEnqueued: nil, // db is flushed in setup so list does not exist hence nil
wantScheduled: []h.ZSetEntry{
{
@ -332,6 +409,12 @@ func TestClientEnqueueIn(t *testing.T) {
task: task,
delay: 0,
opts: []Option{},
wantRes: &Result{
Queue: "default",
Retry: defaultMaxRetry,
Timeout: defaultTimeout,
Deadline: noDeadline,
},
wantEnqueued: map[string][]*base.TaskMessage{
"default": {
{
@ -351,11 +434,15 @@ func TestClientEnqueueIn(t *testing.T) {
for _, tc := range tests {
h.FlushDB(t, r) // clean up db before each test case.
err := client.EnqueueIn(tc.delay, tc.task, tc.opts...)
gotRes, err := client.EnqueueIn(tc.delay, tc.task, tc.opts...)
if err != nil {
t.Error(err)
continue
}
if diff := cmp.Diff(tc.wantRes, gotRes, cmpopts.IgnoreFields(Result{}, "ID")); diff != "" {
t.Errorf("%s;\nEnqueueIn(delay, task) returned %v, want %v; (-want,+got)\n%s",
tc.desc, gotRes, tc.wantRes, diff)
}
for qname, want := range tc.wantEnqueued {
gotEnqueued := h.GetEnqueuedMessages(t, r, qname)
@ -379,6 +466,7 @@ func TestClientDefaultOptions(t *testing.T) {
defaultOpts []Option // options set at the client level.
opts []Option // options used at enqueue time.
task *Task
wantRes *Result
queue string // queue that the message should go into.
want *base.TaskMessage
}{
@ -387,6 +475,12 @@ func TestClientDefaultOptions(t *testing.T) {
defaultOpts: []Option{Queue("feed")},
opts: []Option{},
task: NewTask("feed:import", nil),
wantRes: &Result{
Queue: "feed",
Retry: defaultMaxRetry,
Timeout: defaultTimeout,
Deadline: noDeadline,
},
queue: "feed",
want: &base.TaskMessage{
Type: "feed:import",
@ -402,6 +496,12 @@ func TestClientDefaultOptions(t *testing.T) {
defaultOpts: []Option{Queue("feed"), MaxRetry(5)},
opts: []Option{},
task: NewTask("feed:import", nil),
wantRes: &Result{
Queue: "feed",
Retry: 5,
Timeout: defaultTimeout,
Deadline: noDeadline,
},
queue: "feed",
want: &base.TaskMessage{
Type: "feed:import",
@ -417,6 +517,12 @@ func TestClientDefaultOptions(t *testing.T) {
defaultOpts: []Option{Queue("feed"), MaxRetry(5)},
opts: []Option{Queue("critical")},
task: NewTask("feed:import", nil),
wantRes: &Result{
Queue: "critical",
Retry: 5,
Timeout: defaultTimeout,
Deadline: noDeadline,
},
queue: "critical",
want: &base.TaskMessage{
Type: "feed:import",
@ -433,10 +539,14 @@ func TestClientDefaultOptions(t *testing.T) {
h.FlushDB(t, r)
c := NewClient(RedisClientOpt{Addr: redisAddr, DB: redisDB})
c.SetDefaultOptions(tc.task.Type, tc.defaultOpts...)
err := c.Enqueue(tc.task, tc.opts...)
gotRes, err := c.Enqueue(tc.task, tc.opts...)
if err != nil {
t.Fatal(err)
}
if diff := cmp.Diff(tc.wantRes, gotRes, cmpopts.IgnoreFields(Result{}, "ID")); diff != "" {
t.Errorf("%s;\nEnqueue(task, opts...) returned %v, want %v; (-want,+got)\n%s",
tc.desc, gotRes, tc.wantRes, diff)
}
enqueued := h.GetEnqueuedMessages(t, r, tc.queue)
if len(enqueued) != 1 {
t.Errorf("%s;\nexpected queue %q to have one message; got %d messages in the queue.",
@ -538,7 +648,7 @@ func TestEnqueueUnique(t *testing.T) {
h.FlushDB(t, r) // clean up db before each test case.
// Enqueue the task first. It should succeed.
err := c.Enqueue(tc.task, Unique(tc.ttl))
_, err := c.Enqueue(tc.task, Unique(tc.ttl))
if err != nil {
t.Fatal(err)
}
@ -550,7 +660,7 @@ func TestEnqueueUnique(t *testing.T) {
}
// Enqueue the task again. It should fail.
err = c.Enqueue(tc.task, Unique(tc.ttl))
_, err = c.Enqueue(tc.task, Unique(tc.ttl))
if err == nil {
t.Errorf("Enqueueing %+v did not return an error", tc.task)
continue
@ -585,7 +695,7 @@ func TestEnqueueInUnique(t *testing.T) {
h.FlushDB(t, r) // clean up db before each test case.
// Enqueue the task first. It should succeed.
err := c.EnqueueIn(tc.d, tc.task, Unique(tc.ttl))
_, err := c.EnqueueIn(tc.d, tc.task, Unique(tc.ttl))
if err != nil {
t.Fatal(err)
}
@ -598,7 +708,7 @@ func TestEnqueueInUnique(t *testing.T) {
}
// Enqueue the task again. It should fail.
err = c.EnqueueIn(tc.d, tc.task, Unique(tc.ttl))
_, err = c.EnqueueIn(tc.d, tc.task, Unique(tc.ttl))
if err == nil {
t.Errorf("Enqueueing %+v did not return an error", tc.task)
continue
@ -633,7 +743,7 @@ func TestEnqueueAtUnique(t *testing.T) {
h.FlushDB(t, r) // clean up db before each test case.
// Enqueue the task first. It should succeed.
err := c.EnqueueAt(tc.at, tc.task, Unique(tc.ttl))
_, err := c.EnqueueAt(tc.at, tc.task, Unique(tc.ttl))
if err != nil {
t.Fatal(err)
}
@ -646,7 +756,7 @@ func TestEnqueueAtUnique(t *testing.T) {
}
// Enqueue the task again. It should fail.
err = c.EnqueueAt(tc.at, tc.task, Unique(tc.ttl))
_, err = c.EnqueueAt(tc.at, tc.task, Unique(tc.ttl))
if err == nil {
t.Errorf("Enqueueing %+v did not return an error", tc.task)
continue

4
doc.go
View File

@ -25,10 +25,10 @@ Task is created with two parameters: its type and payload.
map[string]interface{}{"user_id": 42})
// Enqueue the task to be processed immediately.
err := client.Enqueue(t)
res, err := client.Enqueue(t)
// Schedule the task to be processed after one minute.
err = client.EnqueueIn(time.Minute, t)
res, err = client.EnqueueIn(time.Minute, t)
The Server is used to run the background task processing with a given
handler.

10
server_test.go
View File

@ -41,12 +41,12 @@ func TestServer(t *testing.T) {
t.Fatal(err)
}
err = c.Enqueue(NewTask("send_email", map[string]interface{}{"recipient_id": 123}))
_, err = c.Enqueue(NewTask("send_email", map[string]interface{}{"recipient_id": 123}))
if err != nil {
t.Errorf("could not enqueue a task: %v", err)
}
err = c.EnqueueAt(time.Now().Add(time.Hour), NewTask("send_email", map[string]interface{}{"recipient_id": 456}))
_, err = c.EnqueueAt(time.Now().Add(time.Hour), NewTask("send_email", map[string]interface{}{"recipient_id": 456}))
if err != nil {
t.Errorf("could not enqueue a task: %v", err)
}
@ -183,15 +183,15 @@ func TestServerWithFlakyBroker(t *testing.T) {
}
for i := 0; i < 10; i++ {
err := c.Enqueue(NewTask("enqueued", nil), MaxRetry(i))
_, err := c.Enqueue(NewTask("enqueued", nil), MaxRetry(i))
if err != nil {
t.Fatal(err)
}
err = c.Enqueue(NewTask("bad_task", nil))
_, err = c.Enqueue(NewTask("bad_task", nil))
if err != nil {
t.Fatal(err)
}
err = c.EnqueueIn(time.Duration(i)*time.Second, NewTask("scheduled", nil))
_, err = c.EnqueueIn(time.Duration(i)*time.Second, NewTask("scheduled", nil))
if err != nil {
t.Fatal(err)
}