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Changelog

All notable changes to this project will be documented in this file.

The format is based on "Keep a Changelog", and this project adheres to Semantic Versioning.

[Unreleased]

Added

  • EnqueueContext method is added to Client.

Fixed

  • Fixed an error when user pass a duration less than 1s to Unique option

[0.19.0] - 2021-11-06

Changed

  • NewTask takes Option as variadic argument
  • Bumped minimum supported go version to 1.14 (i.e. go1.14 or higher is required).

Added

  • Retention option is added to allow user to specify task retention duration after completion.
  • TaskID option is added to allow user to specify task ID.
  • ErrTaskIDConflict sentinel error value is added.
  • ResultWriter type is added and provided through Task.ResultWriter method.
  • TaskInfo has new fields CompletedAt, Result and Retention.

Removed

  • Client.SetDefaultOptions is removed. Use NewTask instead to pass default options for tasks.

[0.18.6] - 2021-10-03

Changed

  • Updated github.com/go-redis/redis package to v8

[0.18.5] - 2021-09-01

Added

  • IsFailure config option is added to determine whether error returned from Handler counts as a failure.

[0.18.4] - 2021-08-17

Fixed

  • Scheduler methods are now thread-safe. It's now safe to call Register and Unregister concurrently.

[0.18.3] - 2021-08-09

Changed

  • Client.Enqueue no longer enqueues tasks with empty typename; Error message is returned.

[0.18.2] - 2021-07-15

Changed

  • Changed Queue function to not to convert the provided queue name to lowercase. Queue names are now case-sensitive.
  • QueueInfo.MemoryUsage is now an approximate usage value.

Fixed

  • Fixed latency issue around memory usage (see hibiken#309).

[0.18.1] - 2021-07-04

Changed

  • Changed to execute task recovering logic when server starts up; Previously it needed to wait for a minute for task recovering logic to exeucte.

Fixed

  • Fixed task recovering logic to execute every minute

[0.18.0] - 2021-06-29

Changed

  • NewTask function now takes array of bytes as payload.
  • Task Type and Payload should be accessed by a method call.
  • Server API has changed. Renamed Quiet to Stop. Renamed Stop to Shutdown. Note: As a result of this renaming, the behavior of Stop has changed. Please update the exising code to call Shutdown where it used to call Stop.
  • Scheduler API has changed. Renamed Stop to Shutdown.
  • Requires redis v4.0+ for multiple field/value pair support
  • Client.Enqueue now returns TaskInfo
  • Inspector.RunTaskByKey is replaced with Inspector.RunTask
  • Inspector.DeleteTaskByKey is replaced with Inspector.DeleteTask
  • Inspector.ArchiveTaskByKey is replaced with Inspector.ArchiveTask
  • inspeq package is removed. All types and functions from the package is moved to asynq package.
  • WorkerInfo field names have changed.
  • Inspector.CancelActiveTask is renamed to Inspector.CancelProcessing

[0.17.2] - 2021-06-06

Fixed

[0.17.1] - 2021-04-04

Fixed

  • Fix bug in internal RDB.memoryUsage method.

[0.17.0] - 2021-03-24

Added

  • DialTimeout, ReadTimeout, and WriteTimeout options are added to RedisConnOpt.

[0.16.1] - 2021-03-20

Fixed

  • Replace KEYS command with SCAN as recommended by redis doc.

[0.16.0] - 2021-03-10

Added

  • Unregister method is added to Scheduler to remove a registered entry.

[0.15.0] - 2021-01-31

IMPORTATNT: All Inspector related code are moved to subpackage "github.com/hibiken/asynq/inspeq"

Changed

  • Inspector related code are moved to subpackage "github.com/hibken/asynq/inspeq".
  • RedisConnOpt interface has changed slightly. If you have been passing RedisClientOpt, RedisFailoverClientOpt, or RedisClusterClientOpt as a pointer, update your code to pass as a value.
  • ErrorMsg field in RetryTask and ArchivedTask was renamed to LastError.

Added

  • MaxRetry, Retried, LastError fields were added to all task types returned from Inspector.
  • MemoryUsage field was added to QueueStats.
  • DeleteAllPendingTasks, ArchiveAllPendingTasks were added to Inspector
  • DeleteTaskByKey and ArchiveTaskByKey now supports deleting/archiving PendingTask.
  • asynq CLI now supports deleting/archiving pending tasks.

[0.14.1] - 2021-01-19

Fixed

  • go.mod file for CLI

[0.14.0] - 2021-01-14

IMPORTATNT: Please run asynq migrate command to migrate from the previous versions.

Changed

  • Renamed DeadTask to ArchivedTask.
  • Renamed the operation Kill to Archive in Inpsector.
  • Print stack trace when Handler panics.
  • Include a file name and a line number in the error message when recovering from a panic.

Added

  • DefaultRetryDelayFunc is now a public API, which can be used in the custom RetryDelayFunc.
  • SkipRetry error is added to be used as a return value from Handler.
  • Servers method is added to Inspector
  • CancelActiveTask method is added to Inspector.
  • ListSchedulerEnqueueEvents method is added to Inspector.
  • SchedulerEntries method is added to Inspector.
  • DeleteQueue method is added to Inspector.

[0.13.1] - 2020-11-22

Fixed

  • Fixed processor to wait for specified time duration before forcefully shutdown workers.

[0.13.0] - 2020-10-13

Added

  • Scheduler type is added to enable periodic tasks. See the godoc for its APIs and wiki for the getting-started guide.

Changed

  • interface Option has changed. See the godoc for the new interface. This change would have no impact as long as you are using exported functions (e.g. MaxRetry, Queue, etc) to create Options.

Added

  • Payload.String() string method is added
  • Payload.MarshalJSON() ([]byte, error) method is added

[0.12.0] - 2020-09-12

IMPORTANT: If you are upgrading from a previous version, please install the latest version of the CLI go get -u github.com/hibiken/asynq/tools/asynq and run asynq migrate command. No process should be writing to Redis while you run the migration command.

The semantics of queue have changed

Previously, we called tasks that are ready to be processed "Enqueued tasks", and other tasks that are scheduled to be processed in the future "Scheduled tasks", etc. We changed the semantics of "Enqueue" slightly; All tasks that client pushes to Redis are Enqueued to a queue. Within a queue, tasks will transition from one state to another. Possible task states are:

  • Pending: task is ready to be processed (previously called "Enqueued")
  • Active: tasks is currently being processed (previously called "InProgress")
  • Scheduled: task is scheduled to be processed in the future
  • Retry: task failed to be processed and will be retried again in the future
  • Dead: task has exhausted all of its retries and stored for manual inspection purpose

These semantics change is reflected in the new Inspector API and CLI commands.

Changed

Client

Use ProcessIn or ProcessAt option to schedule a task instead of EnqueueIn or EnqueueAt.

Previously v0.12.0
client.EnqueueAt(t, task) client.Enqueue(task, asynq.ProcessAt(t))
client.EnqueueIn(d, task) client.Enqueue(task, asynq.ProcessIn(d))

Inspector

All Inspector methods are scoped to a queue, and the methods take qname (string) as the first argument.
EnqueuedTask is renamed to PendingTask and its corresponding methods.
InProgressTask is renamed to ActiveTask and its corresponding methods.
Command "Enqueue" is replaced by the verb "Run" (e.g. EnqueueAllScheduledTasks --> RunAllScheduledTasks)

CLI

CLI commands are restructured to use subcommands. Commands are organized into a few management commands: To view details on any command, use asynq help <command> <subcommand>.

  • asynq stats
  • asynq queue [ls inspect history rm pause unpause]
  • asynq task [ls cancel delete kill run delete-all kill-all run-all]
  • asynq server [ls]

Added

RedisConnOpt

  • RedisClusterClientOpt is added to connect to Redis Cluster.
  • Username field is added to all RedisConnOpt types in order to authenticate connection when Redis ACLs are used.

Client

  • ProcessIn(d time.Duration) Option and ProcessAt(t time.Time) Option are added to replace EnqueueIn and EnqueueAt functionality.

Inspector

  • Queues() ([]string, error) method is added to get all queue names.
  • ClusterKeySlot(qname string) (int64, error) method is added to get queue's hash slot in Redis cluster.
  • ClusterNodes(qname string) ([]ClusterNode, error) method is added to get a list of Redis cluster nodes for the given queue.
  • Close() error method is added to close connection with redis.

Handler

  • GetQueueName(ctx context.Context) (string, bool) helper is added to extract queue name from a context.

[0.11.0] - 2020-07-28

Added

  • Inspector type was added to monitor and mutate state of queues and tasks.
  • HealthCheckFunc and HealthCheckInterval fields were added to Config to allow user to specify a callback function to check for broker connection.

[0.10.0] - 2020-07-06

Changed

  • All tasks now requires timeout or deadline. By default, timeout is set to 30 mins.
  • Tasks that exceed its deadline are automatically retried.
  • Encoding schema for task message has changed. Please install the latest CLI and run migrate command if you have tasks enqueued with the previous version of asynq.
  • API of (*Client).Enqueue, (*Client).EnqueueIn, and (*Client).EnqueueAt has changed to return a *Result.
  • API of ErrorHandler has changed. It now takes context as the first argument and removed retried, maxRetry from the argument list. Use GetRetryCount and/or GetMaxRetry to get the count values.

[0.9.4] - 2020-06-13

Fixed

  • Fixes issue of same tasks processed by more than one worker (hibiken#90).

[0.9.3] - 2020-06-12

Fixed

[0.9.2] - 2020-06-08

Added

  • The pause and unpause commands were added to the CLI. See README for the CLI for details.

[0.9.1] - 2020-05-29

Added

  • GetTaskID, GetRetryCount, and GetMaxRetry functions were added to extract task metadata from context.

[0.9.0] - 2020-05-16

Changed

  • Logger interface has changed. Please see the godoc for the new interface.

Added

  • LogLevel type is added. Server's log level can be specified through LogLevel field in Config.

[0.8.3] - 2020-05-08

Added

  • Close method is added to Client.

[0.8.2] - 2020-05-03

Fixed

[0.8.1] - 2020-04-27

Added

  • ParseRedisURI helper function is added to create a RedisConnOpt from a URI string.
  • SetDefaultOptions method is added to Client.

[0.8.0] - 2020-04-19

Changed

  • Background type is renamed to Server.
  • To upgrade from the previous version, Update NewBackground to NewServer and pass Config by value.
  • CLI is renamed to asynq.
  • To upgrade the CLI to the latest version run go get -u github.com/hibiken/tools/asynq
  • The ps command in CLI is renamed to servers
  • Concurrency defaults to the number of CPUs when unset or set to a negative value.

Added

  • ShutdownTimeout field is added to Config to speicfy timeout duration used during graceful shutdown.
  • New Server type exposes Start, Stop, and Quiet as well as Run.

[0.7.1] - 2020-04-05

Fixed

  • Fixed signal handling for windows.

[0.7.0] - 2020-03-22

Changed

  • Support Go v1.13+, dropped support for go v1.12

Added

  • Unique option was added to allow client to enqueue a task only if it's unique within a certain time period.

[0.6.2] - 2020-03-15

Added

  • Use method was added to ServeMux to apply middlewares to all handlers.

[0.6.1] - 2020-03-12

Added

  • Client can optionally schedule task with asynq.Deadline(time) to specify deadline for task's context. Default is no deadline.
  • Logger option was added to config, which allows user to specify the logger used by the background instance.

[0.6.0] - 2020-03-01

Added

  • Added ServeMux type to make it easy for users to implement Handler interface.
  • ErrorHandler type was added. Allow users to specify error handling function (e.g. Report error to error reporting service such as Honeybadger, Bugsnag, etc)

[0.5.0] - 2020-02-23

Changed

  • Client API has changed. Use Enqueue, EnqueueAt and EnqueueIn to enqueue and schedule tasks.

Added

  • asynqmon workers was added to list all running workers information

[0.4.0] - 2020-02-13

Changed

  • Handler interface has changed. ProcessTask method takes two arguments context.Context and *asynq.Task
  • Queues field in Config has change from map[string]uint to map[string]int

Added

  • Client can optionally schedule task with asynq.Timeout(duration) to specify timeout duration for task. Default is no timeout.
  • asynqmon cancel [task id] will send a cancelation signal to the goroutine processing the speicified task.

[0.3.0] - 2020-02-04

Added

  • asynqmon ps was added to list all background worker processes

[0.2.2] - 2020-01-26

Fixed

  • Fixed restoring unfinished tasks back to correct queues.

Changed

  • asynqmon ls command is now paginated (default 30 tasks from first page)
  • asynqmon ls enqueued:[queue name] requires queue name to be specified

[0.2.1] - 2020-01-22

Fixed

  • More structured log messages
  • Prevent spamming logs with a bunch of errors when Redis connection is lost
  • Fixed and updated README doc

[0.2.0] - 2020-01-19

Added

  • NewTask constructor
  • Queues option in Config to specify mutiple queues with priority level
  • Client can schedule a task with asynq.Queue(name) to specify which queue to use
  • StrictPriority option in Config to specify whether the priority should be followed strictly
  • RedisConnOpt to abstract away redis client implementation
  • [CLI] asynqmon rmq command to remove queue

Changed

  • Client and Background constructors take RedisConnOpt as their first argument.
  • asynqmon stats now shows the total of all enqueued tasks under "Enqueued"
  • asynqmon stats now shows each queue's task count
  • asynqmon history now doesn't take any arguments and shows data from the last 10 days by default (use --days flag to change the number of days)
  • Task type is now immutable (i.e., Payload is read-only)

[0.1.0] - 2020-01-04

Added

  • Initial version of asynq package
  • Initial version of asynqmon CLI