* Multi Dependency Support - Registration & Enqueue Call
Internal API changes to support multiple dependencies.
* Store all of a job's _dependencies_ in a redis set. Delete that set when a job is deleted.
* Add Job#fetch_dependencies method - which return all jobs a job is dependent upon and optionally _WATCHES_ all dependency ids.
* Use Job#fetch_dependencies in Queue#call_enqueue. `fetch_dependencies` now sets WATCH and raises InvalidJobDependency, rather than call_enqueue.
`Queue` and `Job` public APIs still expect single ids of jobs for `depends_on` but internally register them in a way that could support multiple jobs being passed as dependencies.
Next up: need to update Queue#enqueue_dependents
* Use existing fetch_many method to get dependencies.
Modify fetch_dependencies to use fetch_many.
* Remove default value for fetch_many's connection parameter
* PR review housekeeping
* Remove a duplicate test
* Oneline something
* Fix missing colon in dependencies key
* Delete job key, dependents and dependencies at once
* More Fixes From Code Review
Updates to Job, Queue and associated tests.
* When Checking dependencies Avoid, trip to Redis
* When checking the status of a job, we have a 'clean' status of all dependencies(returned from Job#fetch_dependencies) and the job keys are WATCHed, so there's no reason to go back to Redis to get the status _again_.
* Looks as though, the `_status` set in `Job#restore` was bytes while it was converted to text(`as_text`) in `Job#get_status` - for consistency(and tests) converting to text in `restore` as well.
* In `Queue#enqueue_call`, moved WATCH of dependencies_key to before fetching dependencies. This doesn't really matter but seems more _correct_ - one can imagine some rogue API adding a dependency after they've been fetched but before they've been WATCHEed.
* Update Job#get_status to get _local_ status
* If refresh=False is passed, don't get status from Redis; return the value of _status. This is to avoid a trip to Redis if the caller can guarantee that the value of `_status` is _clean_.
* More Fixups
* Expire dependency keys in Job#cleanup
* Consistency in Job#fetch_dependencies
* Convert `_dependency_id` to `_dependency_ids`
Change `Job`s tracking from a single id of it's dependencies from a single _id_ to a list of _id_s. This change should be private to `Job` - especially leaving `Job#to_dict` and `Job#restore`s treatment of a single 'dependency_id' intact.
This change modifies existing tests.
* Remove reliance upon dependency property in tests
... use dependency.id not `_dependency_id`
* Re-add assertions for Falsey Values
* Add _dependency_id property
For backwards compatibility with other libs such as django-rq and rq-scheduler
* add doc page for job registries
* Use consistent language in registry type descriptions
* Correct usage of 'connection' parameter in Job Registry doc
* Added FailedJobRegistry.
* Added job.failure_ttl.
* queue.enqueue() now supports failure_ttl
* Added registry.get_queue().
* FailedJobRegistry.add() now assigns DEFAULT_FAILURE_TTL.
* StartedJobRegistry.cleanup() now moves expired jobs to FailedJobRegistry.
* Failed jobs are now added to FailedJobRegistry.
* Added FailedJobRegistry.requeue()
* Document the new `FailedJobRegistry` and changes in custom exception handler behavior.
* Added worker.disable_default_exception_handler.
* Document --disable-default-exception-handler option.
* Deleted worker.failed_queue.
* Deleted "move_to_failed_queue" exception handler.
* StartedJobRegistry should no longer move jobs to FailedQueue.
* Deleted requeue_job
* Fixed test error.
* Make requeue cli command work with FailedJobRegistry
* Added .pytest_cache to gitignore.
* Custom exception handlers are no longer run in reverse
* Restored requeue_job function
* Removed get_failed_queue
* Deleted FailedQueue
* Updated changelog.
* Document `failure_ttl`
* Updated docs.
* Remove job.status
* Fixed typo in test_registry.py
* Replaced _pipeline() with pipeline()
* FailedJobRegistry no longer fails on redis-py>=3
* Fixes test_clean_registries
* Worker names are now randomized
* Added a note about random worker names in CHANGES.md
* Worker will now stop working when encountering an unhandled exception.
* Worker should reraise SystemExit on cold shutdowns
* Added anchor.js to docs
* Support for Sentry-SDK (#1045)
* Updated RQ to support sentry-sdk
* Document Sentry integration
* Install sentry-sdk before running tests
* Improved rq info CLI command to be more efficient when displaying lar… (#1046)
* Improved rq info CLI command to be more efficient when displaying large number of workers
* Fixed an rq info --by-queue bug
* Fixed worker.total_working_time bug (#1047)
* queue.enqueue() no longer accepts `timeout` argument (#1055)
* Clean worker registry (#1056)
* queue.enqueue() no longer accepts `timeout` argument
* Added clean_worker_registry()
* Show worker hostname and PID on cli (#1058)
* Show worker hostname and PID on cli
* Improve test coverage
* Remove Redis version check when SSL is used
* Bump version to 1.0
* Removed pytest_cache/README.md
* Changed worker logging to use exc_info=True
* Removed unused queue.dequeue()
* Fixed typo in CHANGES.md
* setup_loghandlers() should always call logger.setLevel() if specified