CHANGES¶

3.2.0¶

• Remove unused link target
• Fix code to support networkx > 1.0
• add release notes to README.rst
• replace http with https
• Update links in README
• fix tox python3 overrides
• Drop py34 target in tox.ini
• Uncap networkx
• give pep8 and docs environments all of the dependencies they need
• Trivial: update pypi url to new url
• Fix doc build
• Trivial: Update pypi url to new url
• stop using tox_install.sh
• only run doc8 as part of pep8 test job
• standardize indentation in tox.ini
• set default python to python3
• don’t let tox_install.sh error if there is nothing to do
• Updated from global requirements
• add lower-constraints job
• Updated from global requirements
• Fix invalid json unit test
• Update reno for stable/queens
• Updated from global requirements
• Updated from global requirements
• Updated from global requirements
• Updated from global requirements

3.1.0¶

• Updated from global requirements
• Add doc8 to pep8 environment
• Use doc/requirements.txt

3.0.1¶

3.0.0¶

• Remove setting of version/release from releasenotes
• Updated from global requirements
• Updated from global requirements
• Updated from global requirements
• Remove class StopWatch from timing

2.17.0¶

2.16.0¶

• Updated from global requirements
• Updated from global requirements
• Update “indentify” to “identify” in comments

2.15.0¶

• Updated from global requirements
• Remove method blather in log adapter
• Remove kwarg timeout in executor conductor
• Updated from global requirements
• Avoid log warning when closing is underway (on purpose)
• Update reno for stable/pike
• Updated from global requirements

2.14.0¶

• Updated from global requirements
• Update URLs in documents according to document migration
• Updated from global requirements
• Fix process based executor task proxying-back events
• turn on warning-is-error in doc build
• switch from oslosphinx to openstackdocstheme
• rearrange existing documentation into the new standard layout
• Updated from global requirements

2.13.0¶

• Updated from global requirements
• Fix html_last_updated_fmt for Python3
• Replace assertRaisesRegexp with assertRaisesRegex

2.12.0¶

• Updated from global requirements
• Updated from global requirements
• do not allow redis job reclaim by same owner

2.11.0¶

• Fix py35 test failure
• Stop using oslotest.mockpatch
• Updated from global requirements
• python3.0 has deprecated LOG.warn

2.10.0¶

• Updated from global requirements
• Updated from global requirements
• Updated from global requirements
• Prepare for using standard python tests
• Use https instead of http for git.openstack.org
• Updated from global requirements
• Update reno for stable/ocata
• Protect storage better against external concurrent access

2.9.0¶

• Remove dep on monotonic
• Rename engine analyzer to be named selector
• Update author and author-email
• Updated from global requirements
• Updated from global requirements
• Add Constraints support
• Show team and repo badges on README

2.8.0¶

• Replaces uuid.uuid4 with uuidutils.generate_uuid()
• Updated from global requirements
• Remove vim header from source files
• Fix release notes gate job failure
• Updated from global requirements
• Use assertIs(Not)None to check for None
• Fix typo in tox.ini
• Fix broken link
• Replace retrying with tenacity
• Updated from global requirements
• Add reno for release notes management
• Updated from global requirements

2.7.0¶

• Changed the home-page link
• Using assertIsNone() instead of assertIs(None, ..)
• Updated from global requirements
• Fix a typo in documentation
• Fix typo: remove redundant ‘that’
• Updated from global requirements
• Fix a typo in logging.py
• Use method ensure_tree from oslo.utils
• Make failure formatter configurable for DynamicLoggingListener
• Updated from global requirements
• Some classes not define __ne__() built-in function

2.6.0¶

2.5.0¶

• Updated from global requirements
• Add logging around metadata, ignore tallying + history

2.4.0¶

• Updated from global requirements
• Start to add a location for contributed useful tasks/flows/more
• Change dependency to use flavors
• Updated from global requirements
• Remove white space between print and ()
• Updated from global requirements
• Add Python 3.5 classifier and venv
• Replace assertEqual(None, *) with assertIsNone in tests

2.3.0¶

• Updated from global requirements
• remove unused LOG
• Fixes: typo error in comments
• Updated from global requirements
• Fix some misspellings in the function name and descriptions
• Updated from global requirements

2.2.0¶

• Don’t use deprecated method timeutils.isotime
• Add tests to verify kwargs behavior on revert validation
• Make tests less dependent on transient state

2.1.0¶

• Updated from global requirements
• Ensure the fetching jobs does not fetch anything when in bad state
• Updated from global requirements
• Use the full ‘get_execute_failures’ vs the shortname
• Split revert/execute missing args messages
• Updated from global requirements
• Instead of a multiprocessing queue use sockets via asyncore
• Add a simple sanity test for pydot outputting

2.0.0¶

• Updated from global requirements
• Fix documentation related to missing BaseTask class
• Remove deprecated things for 2.0 release
• Always used the library packaged mock

1.32.0¶

• Attempt to cancel active futures when suspending is underway
• Allow for specifying green threaded to parallel engine
• Make conductor.stop stop the running engine gracefully

1.31.0¶

• Updated from global requirements
• Don’t set html_last_updated_fmt without git
• Updated from global requirements
• Add the ability to skip resolving from activating
• Fix export_to_dot for networkx package changes
• Ensure upgrade for sqlalchemy is protected by a lock
• Add periodic jobboard refreshing (incase of sync issues)
• Fallback if git is absent
• Allow for revert to have a different argument list from execute

1.30.0¶

• Updated from global requirements
• Use a automaton machine for WBE request state machine
• Sqlalchemy-utils double entry (already in test-requirements.txt)

1.29.0¶

• Updated from global requirements
• Refactor Atom/BaseTask/Task/Retry class hierarchy
• Add missing direct dependency for sqlalchemy-utils

1.28.0¶

• Add WBE worker expiry
• Some WBE protocol/executor cleanups
• Remove need for separate notify thread
• Updated from global requirements
• Don’t bother scanning for workers if no new messages arrived
• Updated from global requirements
• Updated from global requirements
• Updated from global requirements
• Allow cachedproperty to avoid locking
• Spice up WBE banner and add simple worker __main__ entrypoint

1.27.0¶

• Updated from global requirements
• Fix for WBE sporadic timeout of tasks
• Add some basic/initial engine statistics
• Handle cases where exc_args can’t be serialized as JSON in the WBE
• Enable OS_LOG_CAPTURE so that logs can be seen (on error)
• Retrieve the store from flowdetails as well, if it exists
• Disable oslotest LOG capturing
• Updated from global requirements
• Updated from global requirements
• Use helper function for post-atom-completion work
• Ensure that the engine finishes up even under sent-in failures
• 99 bottles example trace logging was not being output
• Add useful/helpful comment to retry scheduler
• Updated from global requirements
• Updated from global requirements
• Replace clear zookeeper python with clear zookeeper bash
• Remove stray LOG.blather

1.26.0¶

• Some additional engine logging
• Replace deprecated library function os.popen() with subprocess
• Add comment as to why we continue when tallying edge decider nay voters
• Add rundimentary and/or non-optimized job priorities
• Allow for alterations in decider ‘area of influence’
• Fix wrong usage of iter_utils.unique_seen
• Updated from global requirements
• Updated from global requirements
• Updated from global requirements
• Use the retrying lib. to do basic sqlalchemy engine validation
• For taskflow patterns don’t show taskflow.patterns prefix
• Rename ‘_emit’ -> ‘_try_emit’ since it is best-effort (not ensured)
• Cache atom name -> actions and provide accessor function
• Quote/standardize atom name output
• Use shared util helper for driver name + config extraction
• Fix currently broken and inactive mysql tests
• Trap and expose exception any ‘args’
• Revert “Remove failure version number”
• Move all internal blather usage/calls to trace usage/calls
• Start rename of BLATHER -> TRACE
• Add ability of job poster/job iterator to wait for jobs to complete
• Updated from global requirements
• Use ‘match_type’ utility function instead of staticmethod
• Remove failure version number
• Translate kazoo exceptions into job equivalents if register_entity fails
• Change name of misc.ensure_dict to misc.safe_copy_dict
• Avoid recreating notify details for each dispatch iteration
• fix doc change caused by the change of tooz
• Deprecated tox -downloadcache option removed
• Updated from global requirements
• Add some useful commentary on rebinding processes
• Use small helper routine to fetch atom metadata entries
• Remove ‘MANIFEST.in’
• Pass through run timeout in engine run()
• Change engine ‘self._check’ into a decorator

1.25.0¶

• Move validation of compiled unit out of compiler
• Allow provided flow to be empty
• Move engine options extraction to __init__ methods
• Updated from global requirements
• Updated from global requirements
• Convert executor proxied engine options into their correct type
• Enable conversion of the tree nodes into a digraph
• Use the misc.ensure_dict helper in conductor engine options saving
• Add optional ‘defer_reverts’ behavior
• Add public property from storage to flowdetail.meta
• Adding notification points for job completion
• Remove python 2.6 and cleanup tox.ini
• Correctly apply deciders across flow boundaries
• Move ‘convert_to_timeout’ to timing type as a helper function
• Use conductor entity class constant instead of raw string
• Add a executor backed conductor and have existing impl. use it
• Add flow durations to DurationListener
• Update docstrings on entity type
• Move ‘fill_iter’ to ‘iter_utils.fill’

1.24.0¶

• Updated from global requirements
• Updated from global requirements
• Register conductor information on jobboard
• Add atom priority ability
• Add validation of base exception type(s) in failure type
• Fix order of assertEqual for unit.test_*
• Fix order of assertEqual for unit.worker_based
• Fix order of assertEqual for unit.persistence
• Fix order of assertEqual for unit.patterns
• Fix order of assertEqual for unit.jobs
• Fix order of assertEqual for unit.action_engine

1.23.0¶

• Updated from global requirements
• feat: add max_dispatches arg to conductor’s run
• Ensure node ‘remove’ and ‘disassociate’ can not be called when frozen
• Add in-memory backend delete() in recursive/non-recursive modes
• Use batch ‘get_atoms_states’ where we can
• Use automaton’s converters/pydot
• Make more of the WBE logging and ‘__repr__’ message more useful
• Fix bad sphinx module reference
• Relabel internal engine ‘event’ -> ‘outcome’
• No need for Oslo Incubator Sync
• Use the node built-in ‘dfs_iter’ instead of recursion

1.22.0¶

• Simplify flow action engine compilation
• Fix ‘dependened upon’ spelling error
• docs - Set pbr warnerrors option for doc build
• Rename ‘history’ -> ‘Release notes’
• Remove dummy/placeholder ‘ChangeLog’ as its not needed
• Remove ./taskflow/openstack/common as it no longer exists
• Remove quotes from subshell call in bash script
• Refactor common parts of ‘get_maybe_ready_for’ methods
• Fix the sphinx build path in .gitignore file
• Change ignore-errors to ignore_errors
• Use graphs as the underlying structure of patterns
• Updated from global requirements
• Fix ‘_cache_get’ multiple keyword argument name overlap
• Use the sqlalchemy-utils json type instead of our own

1.21.0¶

• Updated from global requirements
• Fix how the dir persistence backend was not listing logbooks
• Explain that jobs arch. diagram is only for zookeeper

1.20.0¶

• Updated from global requirements
• iter_nodes method added to flows
• Updated from global requirements
• Use ‘iter_utils.count’ to determine how many unfinished nodes left
• Fix flow states link
• Avoid running this example if zookeeper is not found
• Updated from global requirements
• Have the storage class provide a ‘change_flow_state’ method

1.19.0¶

• Updated from global requirements
• Updated from global requirements
• Add nicely made task structural diagram
• Updated from global requirements
• Remove some temporary variables not needed
• Only remove all ‘next_nodes’ that were done
• Fix busted stevedore doc(s) link
• Extend and improve failure logging
• Improve docstrings in graph flow to denote exceptions raised
• Enable testr OS_DEBUG to be TRACE(blather) by default
• Updated from global requirements
• Show intermediary compilation(s) when BLATHER is enabled

1.18.0¶

• Give the GC more of a break with regard to cycles
• Base class for deciders
• Remove extra runner layer and just use use machine in engine
• Updated from global requirements
• .gitignore update
• Avoid adding 1 to a failure (if it gets triggered)
• Replace the tree ‘pformat()’ recursion with non-recursive variant
• Fix seven typos and one readability on taskflow documentation

1.17.0¶

• Bump futurist and remove waiting code in taskflow
• Use the action engine ‘_check’ helper method
• Modify listeners to handle the results now possible from revert()
• Remove no longer used ‘_was_failure’ static method
• Remove legacy py2.6 backwards logging compat. code
• Updated from global requirements
• Fix lack of space between functions
• Create and use a serial retry executor
• Just link to the worker engine docs instead of including a TOC inline
• Link to run() method in engines doc
• Add ability to reset an engine via a `reset` method

1.16.0¶

• Updated from global requirements
• Use ‘addCleanup’ instead of ‘tearDown’ in engine(s) test
• Update ‘make_client’ kazoo docs and link to them
• Remove **most** usage of taskflow.utils in examples
• Move doc8 to being a normal test requirement in test-requirements.txt
• Updated from global requirements
• Found another removal_version=? that should be removal_version=2.0
• Add deprecated module(s) for prior FSM/table code-base
• Replace internal fsm + table with automaton library
• Remove direct usage of timeutils overrides and use fixture

1.15.0¶

• Provide a deprecated alias for the now removed stop watch class
• Update all removal_version from being ? to being 2.0
• Add deprecated and only alias modules for the moved types
• Unify the zookeeper/redis jobboard iterators
• Updated from global requirements
• Run the ‘99_bottles.py’ demo at a fast rate when activated
• Use io.open vs raw open
• Retain atom ‘revert’ result (or failure)
• Update the version on the old/deprecated logbook module
• Add docs for u, v, decider on graph flow link method
• Fix mock calls
• Remove setup.cfg ‘requires-python’ incorrect entry
• Compile lists of retry/task atoms at runtime compile time
• Integrate futurist (and **remove** taskflow originating code)
• Allow the 99_bottles.py demo to run in BLATHER mode
• Make currently implemented jobs use @functools.total_ordering
• Add more useful `__str__` to redis job
• Show job posted and goodbye in 99_bottles.py example
• Rename logbook module -> models module
• Notify on the individual engine steps

1.14.0¶

• Expose strategies so doc generation can easily pick them up
• Denote mail subject should be ‘[Oslo][TaskFlow]’
• Add support for conditional execution
• Use encodeutils for exception -> string function
• Updated from global requirements
• Build-out + test a redis backed jobboard

0.13.0¶

• Just make the compiler object at __init__ time
• Remove kazoo hack/fix for issue no longer needed
• Add history.rst that uses generated ‘ChangeLog’ file
• Add docstrings on runtime objects methods and link to them in docs

0.12.0¶

• Updated from global requirements
• Update states comment to refer to task section
• Updated from global requirements
• Remove 2.6 classifier + 2.6 compatibility code
• Remove reference to ‘requirements-pyN.txt’ files
• Add smarter/better/faster impl. of `ensure_atoms`
• Add bulk `ensure_atoms` method to storage
• Make it possible to see the queries executed (in BLATHER mode)
• Add doc warning to engine components
• Perform a few optimizations to decrease persistence interactions
• Handle conductor ctrl-c more appropriately
• Cache the individual atom schedulers at compile time
• Split-off the additional retry states from the task states
• Use the `excutils.raise_with_cause` after doing our type check
• Updated from global requirements
• Use monotonic lib. to avoid finding monotonic time function
• Document more of the retry subclasses special keyword arguments

0.11.0¶

• Address concurrent mutation of sqlalchemy backend
• Add indestructible 99 bottles of beer example
• Use alembic upgrade function/command directly
• Updated from global requirements
• Remove usage of deprecated ‘task_notifier’ property in build_car example
• Add `simple_linear_listening` example to generated docs
• Handy access to INFO level
• Switch badges from ‘pypip.in’ to ‘shields.io’
• Adding a revert_all option to retry controllers
• A few jobboard documentation tweaks
• Use sphinx deprecated docstring markup
• Use a class constant for the default path based backend path
• Updated from global requirements
• Remove example not tested
• Make the default file encoding a class constant with a docstring
• Use a lru cache to limit the size of the internal file cache
• Updated from global requirements
• Use hash path lookup vs path finding
• Remove all ‘lock_utils’ now that fasteners provides equivalents
• Add a new `ls_r` method
• Updated from global requirements
• Refactor machine builder + runner into single unit
• Replace lock_utils lock(s) with fasteners package
• Updated from global requirements
• Use shared ‘_check’ function to check engine stages
• Remove a couple more useless ‘pass’ keywords found
• Add a test that checks for task result visibility
• Remove testing using persistence sqlalchemy backend with ‘mysqldb’
• Remove customized pyX.Y tox requirements
• Updated from global requirements
• Allow same deps for requires and provides in task
• Remove ‘pass’ usage not needed
• Only show state transitions to logging when in BLATHER mode
• Fix updated_at column of sqlalchemy tables
• Remove script already nuked from oslo-incubator
• Ensure path_based abstract base class is included in docs
• Beef up docs on the logbook/flow detail/atom details models
• Remove custom py26/py27 tox venvs no longer used
• Executors come in via options config, not keyword arguments
• Use newer versions of futures that adds exception tracebacks
• Ensure empty paths raise a value error
• Remove listener stack and replace with exit stack
• Expose action engine no reraising states constants
• Chain a few more exception raises that were previously missed
• Expose in memory backend split staticmethod
• Updated from global requirements
• Remove tox py33 environment no longer used
• Avoid creating temporary removal lists

0.10.1¶

• Avoid trying to copy tasks results when cloning/copying
• Avoid re-normalizing paths when following links
• Add a profiling context manager that can be easily enabled
• Updated from global requirements

0.10.0¶

• Remove validation of state on state read property access
• Make the default path a constant and tweak class docstring
• Avoid duplicating exception message
• Add speed-test tools script
• Speed up memory backend via a path -> node reverse mapping
• Updated from global requirements
• Fix a typo in taskflow docs
• Small refactoring of ‘merge_uri’ utility function
• Fix post coverage job option not recognized
• Refactor/reduce shared ‘ensure(task/retry)’ code
• Move implementations into there own sub-sections
• Remove run_cross_tests.sh
• Move zookeeper jobboard constants to class level
• Retain chain of missing dependencies
• Expose fake filesystem ‘join’ and ‘normpath’
• Add + use diagram explaining retry controller area of influence
• Add openclipart.org conductor image to conductor docs
• Use oslo_utils eventletutils to warn about eventlet patching
• Test more engine types in argument passing unit test
• Add a conductor running example
• Replace more instance(s) of exception chaining with helper
• Avoid attribute error by checking executor for being non-none

0.9.0¶

• Validate correct exception subclass in ‘raise_with_cause’
• Remove link to kazoo eventlet handler
• Add states generating venv and use pydot2
• Add strict job state transition checking
• Uncap library requirements for liberty
• Have reset state handlers go through a shared list
• Add job states in docs + states in python
• Expose r/o listener callback + details filter callback
• Expose listener notification type + docs
• Ensure listener args are always a tuple/immutable
• Include the ‘dump_memory_backend’ example in the docs
• Make resolution/retry strategies more clear and better
• Rename notifier ‘listeners’ to ‘topics’
• Mention link to states doc in notify state transitions
• Ensure we don’t get stuck in formatting loops
• Add note about thread safety of fake filesystem
• Have the notification/listener docs match other sections
• Put semantics preservation section into note block
• Note that the traditional mode also avoids this truncation issue
• Avoid going into causes of non-taskflow exceptions
• Use the ability to chain exceptions correctly
• Add a example showing how to share an executor
• Shrink the bookshelf description
• Remove link about implementing job garbage binning
• Make the storage layer more resilent to failures
• Put the examples/misc/considerations under a new section
• Add a suspension engine section

0.8.1¶

• Switch back to maxdepth 2
• Allow ls() to list recursively (using breadth-first)
• Make an attempt at having taskflow exceptions print causes better
• fix renamed class to call super correctly
• Turn ‘check_who’ into a decorator
• Use ‘node’ terminology instead of ‘item’ terminology
• Remove 11635 bug reference
• Allow providing a node stringify function to tree pformat
• Add in memory filesystem clearing
• Just unify having a single requirements.txt file
• Fix a couple of spelling and grammar errors
• Add memory backend get() support
• Make the graph ‘_unsatisfied_requires’ be a staticmethod
• Add more comments to fake in-memory filesystem
• Add a set of tests to the in memory fake filesystem

0.8.0¶

• Adding test to improve CaptureListener coverage
• Prefer posixpath to os.path
• By default use a in memory backend (when none is provided)
• Allow using shallow copy instead of deep copy
• Move to the newer debtcollector provided functions
• Move to using the oslo.utils stop watch
• Updated from global requirements
• Ensure thread-safety of persistence dir backend
• Ensure we are really setup before being connected
• Ensure docstring on storage properties
• Expose the storage backend being used
• Use iteration instead of list(s) when extracting scopes
• Use binary/encode decode helper routines in dir backend
• Rename memory backend filesystem -> fake filesystem
• Just let the future executors handle the max workers
• Always return scope walker instances from `fetch_scopes_for`
• Give the GC a break
• Use the class name instead of the TYPE property in __str__
• Just use the class name instead of TYPE constant
• Ensure we have a ‘coverage-package-name’
• Attempt to extract traceback from exception
• Use compatible map and update map/reduce task docs
• Update engine docs with new validation stage
• Ensure we register & deregister conductor listeners
• Rename attribute ‘_graph’ to ‘_execution_graph’
• Add a log statement pre-validation that dumps graph info
• Have this example exit non-zero if incorrect results
• Use a collections.namedtuple for the request work unit
• Some small wbe engine doc tweaks
• Add newline to avoid sphinx warning
• Allow passing ‘many_handler’ to fetch_all function
• Ensure event time listener is in listeners docs
• Add a in-memory backend dumping example
• Added a map and a reduce task
• Restructure the in-memory node usage
• Switch to non-namespaced module imports
• Allow the storage unit to use the right scoping strategy
• Just use the local conf variable
• Put underscore in-front of alchemist helper
• lazy loading for logbooks and flowdetails
• Allow backend connection config (via fetch) to be a string
• Add + use failure json schema validation
• Use ordered[set/dict] to retain ordering
• Allow injected atom args to be persisted
• add _listeners_from_job method to Conductor base
• update uses of TimingListener to DurationListener
• Added EventTimeListner to record when events occur
• added update_flow_metadata method to Storage class
• Retain nested causes where/when we can
• Denote issue 17911 has been merged/accepted
• Persistence backend refactor
• Remove support for 3.3
• Writers can now claim a read lock in ReaderWriterLock
• Add another probabilistic rw-lock test
• Add + use read/write lock decorators
• Add no double writers thread test
• Use condition context manager instead of acquire/release
• Remove condition acquiring for read-only ops
• Set a no-op functor when none is provided
• Ensure needed locks is used when reading/setting intention
• Specialize checking for overlaps
• Use links instead of raw block quotes
• Rename the timing listeners to duration listeners
• Add a bookshelf developer section
• Ensure the thread bundle stops in last to first order
• Add warning about transient arguments and worker-based-engines
• Ensure ordered set is pickleable
• Add node removal/disassociate functions
• Add a fully functional orderedset
• Make the worker banner template part of the worker class
• Use compilation helper objects
• Allow node finding to not do a deep search
• Add a frozen checking decorator
• Tweak functor used to find flatteners/storage routines
• Add specific scoping documentation
• add jobboard trash method
• Provide more contextual information about invalid periodics
• Fix lookup scoping multi-match ordering
• Stick to one space after a period
• Refactor parts of the periodic worker
• Use oslo.utils encodeutils for encode/decode functions
• Bring over pretty_tox.sh from nova/heat/others
• Tweak some of the types thread safety docstrings
• Add pypi link badges
• Switch the note about process pool executor to warning
• Chain exceptions correctly on py3.x
• Updated from global requirements
• Remove WBE experimental documentation note
• Use the enum library for the retry strategy enumerations
• Use debtcollector library to replace internal utility
• add get_flow_details and get_atom_details to all backends
• Tweaks to atom documentation
• Update Flow::__str__
• Add todo note for kombu pull request
• Move ‘provides’ and ‘name’ to instance attributes
• Allow loading conductors via entrypoints

0.7.1¶

• Revert “Add retries to fetching the zookeeper server version”
• Allow turning off the version check
• adding check for str/unicode type in requires
• Make the dispatcher handler be an actual type
• Add retries to fetching the zookeeper server version
• Remove duplicate ‘the’ and link to worker engine section
• Remove delayed decorator and replace with nicer method
• Fix log statement
• Make the atom class an abstract class
• Improve multilock class and its associated unit test
• Mark conductor ‘stop’ method deprecation kwarg with versions
• Move to hacking 0.10
• catch NotFound errors when consuming or abandoning
• Use the new table length constants
• Improve upon/adjust/move around new optional example
• Clarify documentation related to inputs
• Docstrings should document parameters return values
• Let the multi-lock convert the provided value to a tuple
• Map optional arguments as well as required arguments
• Add a BFS tree iterator
• DFS in right order when not starting at the provided node
• Rework the sqlalchemy backend
• Modify stop and add wait on conductor to prevent lockups
• Default to using a thread-safe storage unit
• Add warning to sqlalchemy backend size limit docs
• Updated from global requirements
• Use a thread-identifier that can’t easily be recycled
• Use a notifier instead of a direct property assignment
• Tweak the WBE diagram (and present it as an svg)
• Remove duplicate code
• Improved diagram for Taskflow
• Bump up the env_builder.sh to 2.7.9
• Add a capturing listener (for test or other usage)
• Add + use a staticmethod to fetch the immediate callables
• Just directly access the callback attributes
• Use class constants during pformatting a tree node

0.7.0¶

• Abstract out the worker finding from the WBE engine
• Add and use a nicer kombu message formatter
• Remove duplicated ‘do’ in types documentation
• Use the class defined constant instead of raw strings
• Use kombu socket.timeout alias instead of socket.timeout
• Stopwatch usage cleanup/tweak
• Add note about publicly consumable types
• Add docstring to wbe proxy to denote not for public use
• Use monotonic time when/if available
• Updated from global requirements
• Link WBE docs together better (especially around arguments)
• Emit a warning when no routing keys provided on publish()
• Center SVG state diagrams
• Use importutils.try_import for optional eventlet imports
• Shrink the WBE request transition SVG image size
• Add a thread bundle helper utility + tests
• Make all/most usage of type errors follow a similar pattern
• Leave use-cases out of WBE developer documentation
• Allow just specifying ‘workers’ for WBE entrypoint
• Add comments to runner state machine reaction functions
• Fix coverage environment
• Use explicit WBE worker object arguments (instead of kwargs)
• WBE documentation tweaks/adjustments
• Add a WBE request state diagram + explanation
• Tidy up the WBE cache (now WBE types) module
• Fix leftover/remaining ‘oslo.utils’ usage
• Show the failure discarded (and the future intention)
• Use a class provided logger before falling back to module
• Use explicit WBE object arguments (instead of kwargs)
• Fix persistence doc inheritance hierarchy
• The gathered runtime is for failures/not failures
• add clarification re parallel engine
• Increase robustness of WBE producer/consumers
• Move implementation(s) to there own sections
• Move the jobboard/job bases to a jobboard/base module
• Have the serial task executor shutdown/restart its executor
• Mirror the task executor methods in the retry action
• Add back a ‘eventlet_utils’ helper utility module
• Use constants for runner state machine event names
• Remove ‘SaveOrderTask’ and test state in class variables
• Provide the stopwatch elapsed method a maximum
• Fix unused and conflicting variables
• Switch to using ‘oslo_serialization’ vs ‘oslo.serialization’
• Switch to using ‘oslo_utils’ vs ‘oslo.utils’
• Add executor statistics
• Use oslo.utils reflection for class name
• Add split time capturing to the stop watch
• Use platform neutral line separator(s)
• Create and use a multiprocessing sync manager subclass
• Use a single sender
• Updated from global requirements
• Include the ‘old_state’ in all currently provided listeners
• Update the README.rst with accurate requirements
• Include docstrings for parallel engine types/strings supported
• The taskflow logger module does not provide a logging adapter
• Send in the prior atom state on notification of a state change
• Pass a string as executor in the example instead of an executor
• Updated from global requirements
• Fix for job consumption example using wrong object

0.6.1¶

• Remove need to inherit/adjust netutils split
• Allow specifying the engine ‘executor’ as a string
• Disallowing starting the executor when worker running
• Use a single shared queue for an executors lifecycle
• Avoid creating a temporary list(s) for tree type
• Update statement around stopwatch thread safety
• Register with ‘ANY’ in the cloned process
• Add edge labels for engine states
• Remove less than useful action_engine __str__
• Ensure manager started/shutdown/joined and reset
• Return the same namedtuple that the future module returns
• Add a simplistic hello world example
• Get event/notification sending working correctly
• Move the engine scoping test to its engines test folder
• Get the basics of a process executor working
• Move the persistence base to the parent directory
• Correctly trigger ‘on_exit’ of starting/initial state

0.6.0¶

• Add an example which shows how to send events out from tasks
• Move over to using oslo.utils [reflection, uuidutils]
• Rework the in-memory backend
• Updated from global requirements
• Add a basic map/reduce example to show how this can be done
• Add a parallel table mutation example
• Add a ‘can_be_registered’ method that checks before notifying
• Base task executor should provide ‘wait_for_any’
• Replace autobind with a notifier module helper function
• Cleanup some doc warnings/bad/broken links
• Use the notifier type in the task class/module directly
• Use a tiny clamp helper to clamp the ‘on_progress’ value
• Retain the existence of a ‘EngineBase’ until 0.7 or later
• Remove the base postfix from the internal task executor
• Remove usage of listener base postfix
• Add a moved_inheritable_class deprecation helper
• Avoid holding the lock while scanning for existing jobs
• Remove the base postfix for engine abstract base class
• Avoid popping while another entity is iterating
• Updated from global requirements
• Use explict ‘attr_dict’ when adding provider->consumer edge
• Properly handle and skip empty intermediary flows
• Ensure message gets processed correctly
• Just assign a empty collection instead of copy/clear
• Remove rtype from task clone() doc
• Add and use a new simple helper logging module
• Have the sphinx copyright date be dynamic
• Add appropriate links into README.rst
• Use condition variables using ‘with’
• Use an appropriate ``extract_traceback`` limit
• Allow all deprecation helpers to take a stacklevel
• Correctly identify stack level in ``_extract_engine``
• Stop returning atoms from execute/revert methods
• Have tasks be able to provide copy() methods
• Allow stopwatches to be restarted
• Ensure that failures can be pickled
• Rework pieces of the task callback capability
• Just use 4 spaces for classifier indents
• Move atom action handlers to there own subfolder/submodule
• Workflow documentation is now in infra-manual
• Ensure frozen attribute is set in fsm clones/copies
• Fix split on “+” for connection strings that specify dialects
• Update listeners to ensure they correctly handle all atoms
• Allow for the notifier to provide a ‘details_filter’
• Be explicit about publish keyword arguments
• Some package additions and adjustments to the env_builder.sh
• Cache immutable visible scopes in the runtime component
• Raise value errors instead of asserts
• Add a claims listener that connects job claims to engines
• Split the scheduler into sub-schedulers
• Use a module level constant to provide the DEFAULT_LISTEN_FOR
• Move the _pformat() method to be a classmethod
• Add link to issue 17911
• Avoid deepcopying exception values
• Include documentation of the utility modules
• Use a metaclass to dynamically add testcases to example runner
• Remove default setting of ‘mysql_traditional_mode’
• Move scheduler and completer classes to there own modules
• Ensure that the zookeeper backend creates missing atoms
• Use the deprecation utility module instead of warnings
• Tweaks to setup.cfg
• Add a jobboard high level architecture diagram
• Mark ‘task_notifier’ as renamed to ‘atom_notifier’
• Revert wrapt usage until further notice
• Updated from global requirements
• Add a history retry object, makes retry histories easier to use
• Format failures via a static method
• When creating daemon threads use the bundled threading_utils
• Ensure failure types contain only immutable items
• Mark ‘task_notifier’ as renamed to ‘atom_notifier’
• Use wrapt to provide the deprecated class proxy
• Updated from global requirements
• Updated from global requirements
• Updated from global requirements
• Reduce the worker-engine joint testing time
• Link bug in requirements so people understand why pbr is listed
• Updated from global requirements
• Use standard threading locks in the cache types
• Handle the case where ‘_exc_type_names’ is empty
• Add pbr to installation requirements
• Updated from global requirements
• Remove direct usage of the deprecated failure location
• Fix the example ‘default_provides’
• Use constants for retry automatically provided kwargs
• Remove direct usage of the deprecated notifier location
• Remove attrdict and just use existing types
• Use the mock that finds a working implementation
• Add a futures type that can unify our future functionality
• Bump the deprecation version number
• Use and verify event and latch wait() return using timeouts
• Deprecate `engine_conf` and prefer `engine` instead
• Use constants for link metadata keys
• Bump up the sqlalchemy version for py26
• Hoist the notifier to its own module
• Move failure to its own type specific module
• Use constants for revert automatically provided kwargs
• Improve some of the task docstrings
• We can now use PyMySQL in py3.x tests
• Updated from global requirements
• Add the database schema to the sqlalchemy docs
• Change messaging from handler connection timeouts -> operation timeouts
• Switch to a custom NotImplementedError derivative
• Allow the worker banner to be written to an arbitrary location
• Update engine class names to better reflect there usage

0.5.0¶

• Avoid usage of six.moves in local functions
• Refactor parts of the job lock/job condition zookeeper usage
• Make it so that the import works for older versions of kombu
• Rework the state documentation
• Updated from global requirements
• Add a more dynamic/useful logging listener
• Use timeutils functions instead of misc.wallclock
• Expose only `ensure_atom` from storage
• Adjust docs+venv tox environments requirements/dependencies
• Increase robustness of WBE message and request processing
• Adjust the WBE log levels
• Use the features that the oslotest mock base class provides
• Use oslotest to provide our base test case class
• Jobboard example that show jobs + workers + producers
• Adjust on_job_posting to not hold the lock while investigating
• Bring in a newer optional eventlet
• Move some of the custom requirements out of tox.ini
• Document more function/class/method params
• Stop using intersphinx
• Expand toctree to three levels
• Documentation cleanups and tweaks
• Fix multilock concurrency when shared by > 1 threads
• Increase/adjust the logging of the WBE response/send activities
• Color some of the states depending on there meaning
• Switch to using oslo.utils and oslo.serialization
• Typos “searchs”
• Update the requirements-py2.txt file
• Remove no longer needed r/w lock interface base class
• Updated from global requirements
• Better handle the tree freeze method
• Ensure state machine can be frozen
• Link a few of the classes to implemented features/bugs in python
• Add a timing listener that also prints the results
• Remove useless __exit__ return
• Example which shows how to move values from one task to another
• Mention issue with more than one thread and reduce workers
• Add a mandelbrot parallel calculation WBE example
• Add existing types to generated documentation
• Remove the dependency on prettytable
• Work toward Python 3.4 support and testing
• Add a state machine copy() method
• Update the state graph builder to use state machine type
• Add a docs virtualenv
• Reduce unused tox environments

0.4.0¶

• Add a couple of scope shadowing test cases
• Relax the graph flow symbol constraints
• Relax the unordered flow symbol constraints
• Relax the linear flow symbol constraints
• Revamp the symbol lookup mechanism
• Be smarter about required flow symbols
• Update oslo-incubator to 32e7f0b56f52742754
• Translate the engine runner into a well defined state-machine
• Raise a runtime error when mixed green/non-green futures
• Ensure the cachedproperty creation/setting is thread-safe
• warn against sorting requirements
• Updated from global requirements
• Update transitioning function name to be more understandable
• Move parts of action engine tests to a subdirectory
• Tweak engine iteration ‘close-up shop’ runtime path
• Use explicit WBE request state transitions
• Reject WBE messages if they can’t be put in an ack state
• Make version.py handle pbr not being installed
• Cleanup WBE example to be simpler to understand
• Use __qualname__ where appropriate
• Updated from global requirements
• Updated from global requirements
• Make the WBE worker banner information more meaningful
• Have the dispatch_job function return a future
• Expand documention on failures and wrapped failures types
• Allow worker count to be specified when no executor provided
• Remove sphinx examples emphasize-lines
• Split requirements into py2 and py3 files
• Update oslo-incubator to 037dee004c3e2239
• Remove db locks and use random db names for tests
• Allow WBE request transition timeout to be dynamic
• Avoid naming time type module the same as a builtin
• LOG which requeue filter callback failed
• Add a pformat() failure method and use it in the conductor
• add pre/post execute/retry callbacks to tasks
• Use checked_commit() around consume() and abandon()
• Use a check + create transaction when claiming a job
• Improve WBE testing coverage
• Add basic WBE validation sanity tests
• WBE request message validation
• WBE response message validation
• WBE notification message validation
• Allow handlers to provide validation callables
• Use a common message dispatcher
• Use checked commit when committing kazoo transactions
• Enable hacking checks H305 and H307 in tox.ini template
• Fixes unsorted dicts and sets in doctests
• README.rst: Avoid using non-ascii character
• Updated from global requirements
• Add a sample script that can be used to build a test environment
• Enabled hacking checks H305 and H307
• Bump hacking to version 0.9.2
• Allow a jobs posted book to be none by default
• Cleanup some of the example code & docs
• Make greenexecutor not keep greenthreads active
• Add the arch/big picture omnigraffle diagram
• Remove pbr as a runtime dependency
• Use the `state_graph.py` for all states diagrams
• Make the examples documentation more relevant
• Raise NotImplementedError instead of NotImplemented
• Move the stopwatch tests to test_types
• Remove need to do special exception catching in parse_uri
• Update oslo incubator code to commit 0b02fc0f36814968
• Fix the section name in CONTRIBUTING.rst
• Add a conductor considerations section
• Make the expiring cache a top level cache type
• Use `flow_uuid` and `flow_name` from storage
• Fix traces left in zookeeper
• Clarify locked decorator is for instance methods
• Extract the state changes from the ensure storage method
• Create a top level time type
• Simplify identity transition handling for tasks and retries
• Remove check_doc.py and use doc8
• Remove functions created for pre-six 1.7.0
• Add a tree type
• Make intentions a tuple (to denote immutability)
• Updated from global requirements
• Add example for pseudo-scoping
• Fix E265 hacking warnings
• Fix doc which should state fetch() usage
• Adjust sphinx requirement
• Upgrade hacking version and fix some of the issues
• Denote that other projects can use this library
• Remove misc.as_bool as oslo provides an equivalent
• Update zake to requirements version

0.3.21¶

• Rename additional to general/higher-level
• Sync our version of the interprocess lock
• Increase usefulness of the retry component compile errors
• Switch to a restructuredtext README file
• Create a considerations section
• Include the function name on internal errors
• Add in default transaction isolation levels
• Allow the mysql mode to be more than just TRADITIONAL
• Make the runner a runtime provided property
• Rename inject_task_args to inject_atom_args
• Rename the graph analyzer to analyzer
• Provide the compilation object instead of just a part of it
• Ensure cachedproperty descriptor picks up docstrings

0.3¶

• Warn about internal helper/utility usage
• Rename to atom from task
• Invert the conductor stop() returned result
• Move flattening to the action engine compiler
• Increase the level of usefulness of the dispatching logging
• Avoid forcing engine_conf to a dict
• Allow for two ways to find a flow detail in a job for a conductor
• Add docs related to the new conductor feature
• Add docstring describing the inject instance variable
• Finish factoring apart the graph_action module
• Update sphinx pin from global requirements
• Fix docstring list format
• Allow indent text to be passed in
• Factor out the on_failure to a mixin type
• Use a name property setter instead of a set_name method
• Adds a single threaded flow conductor
• add the ability to inject arguments into tasks at task creation
• Synced jsonutils from oslo-incubator
• Remove wording issue (track does not make sense here)
• Fix case of taskflow in docs
• Put the job external wiki link in a note section
• Rework atom documentation
• Add doc link to examples
• Rework the overview of the notification mechanism
• Standardize on the same capitalization pattern
• Regenerate engine-state sequence diagram
• Add source of engine-state sequence diagram
• Add kwarg check_pending argument to fake lock
• Add a example which uses the run_iter function in a for loop
• Fix error string interpolation
• Rename t_storage to atom_storage
• Create and use a new compilation module
• Add engine state diagram
• Add tests for the misc.cachedproperty descriptor
• Complete the cachedproperty descriptor protocol
• Don’t create fake LogBook when we can not fetch one
• Use futures wait() when possible
• Use /taskflow/flush-test in the flush function
• Add a reset nodes function
• Default the impl_memory conf to none
• Fix spelling mistake
• Add a helper tool which clears zookeeper test dirs
• Add a zookeeper jobboard integration test
• Cleanup zookeeper integration testing
• Use a more stable flush method
• Remove the _clear method and do not reset the job_watcher
• Allow command and connection retry configuration
• Check documentation for simple style requirements
• Add an example which uses the run iteration functionality
• Implement run iterations
• Put provides and requires code to basic Flow
• Allow the watcher to re-register if the session is lost
• Add a new wait() method that waits for jobs to arrive
• Add a cachedproperty descriptor
• Add an example for the job board feature
• Engine _cls postfix is not correct
• Pass executor via kwargs instead of config
• Allow the WBE to use a preexisting executor
• Tweaks to object hiearchy diagrams
• Adjust doc linking
• Medium-level docs on engines
• Add docs for the worker based engine (WBE)
• Updated from global requirements
• Move from generator to iterator for iterjobs
• Add a jobboard fetching context manager
• Wrap the failure to load in the not found exception
• Update jobboard docs
• Synced jsonutils from oslo-incubator
• Remove persistence wiki page link
• Load engines with defined args and provided kwargs
• Integrate urlparse for configuration augmentation
• Fix “occured” -> “occurred”
• Documentation tune-ups
• Fix spelling error
• Add a resumption strategy doc
• Docs and cleanups for test_examples runner
• Skip loading (and failing to load) lock files
• Add a persistence backend fetching context manager
• Add a example that activates a future when a result is ready
• Fix documentation spelling errors
• Add a job consideration doc
• Add last_modified & created_on attributes to jobs
• Allow jobboard event notification
• Use sequencing when posting jobs
• Add a directed graph type (new types module)
• Add persistence docs + adjustments
• Updated from global requirements
• Stings -> Strings
• Be better at failure tolerance
• Ensure example abandons job when it fails
• Add docs for jobs and jobboards
• Get persistence backend via kwargs instead of conf
• Allow fetching jobboard implementations
• Reuse already defined variable
• More keywords & classifier topics
• Allow transient values to be stored in storage
• Doc adjustments
• Move the daemon thread helper function
• Create a periodic worker helper class
• Fix not found being raised when iterating
• Allow for only iterating over the most ‘fresh’ jobs
• Updated from global requirements
• Update oslo-incubator to 46f2b697b6aacc67
• import run_cross_tests.sh from incubator
• Exception in worker queue thread
• Avoid holding the state lock while notifying

0.2¶

• Allow atoms to save their own state/result
• Use correct exception in the timing listener
• Add a engine preparation stage
• Decrease extraneous logging
• Handle retry last_results/last_failure better
• Improve documentation for engines
• Worker executor adjustments
• Revert “Move taskflow.utils.misc.Failure to its own module”
• Move taskflow.utils.misc.Failure to its own module
• Leave the execution_graph as none until compiled
• Move state link to developer docs
• Raise error if atom asked to schedule with unknown intention
• Removed unused TIMED_OUT state
• Rework documentation of notifications
• Test retry fails on revert
• Exception when scheduling task with invalid state
• Fix race in worker-based executor result processing
• Set logbook/flowdetail/atomdetail meta to empty dict
• Move ‘inputs and outputs’ to developers docs
• tests: Discover absence of zookeeper faster
• Fix spelling mistake
• Should be greater or equal to zero and not greater than
• Persistence cleanup part one
• Run worker-based engine tests faster
• SQLAlchemy requirements put in order
• Add timeout to WaitForOneFromTask
• Use same code to reset flow and parts of it
• Optimize dependency links in flattening
• Adjust the exception hierachy
• docs: Links to methods on arguments and results page
• Add __repr__ method to Atom
• Flattening improvements
• tests: Fix WaitForOneFromTask constructor parameter introspection
• Rework graph flow unit tests
• Rewrite assertion for same elements in sequences
• Unit tests for unordered flow
• Linear flow: mark links and rework unit tests
• Drop indexing operator from linear flow
• Drop obsolete test_unordered_flow
• Iteration over links in flow interface
• Add a timeout object that can be interrupted
• Avoid shutting down of a passed executor
• Add more tests for resumption with retry
• Improve logging for proxy publish
• Small documentation fix
• Improve proxy publish method
• Add Retry to developers documentation
• Move flow states to developers documentation
• Remove extraneous vim configuration comments
• Make schedule a proper method of GraphAction
• Simplify graph analyzer interface
• Test storage with memory and sqlite backends
• Fix few minor spelling errors
• Fix executor requests publishing bug
• Flow smart revert with retry controller
• Add atom intentions for tasks and retries
• [WBE] Collect information from workers
• Add tox environment for pypy
• docs: Add inheritance diagram to exceptions documentation
• Adjust logging levels and usage to follow standards
• Introduce message types for WBE protocol
• Add retry action to execute retries
• Extend logbook and storage to work with retry
• Add retry to execution graph
• Add retry to Flow patterns
• Add base class for Retry
• Update request `expired` property docsting
• docs: Add page describing atom arguments and results
• docs: Improve BaseTask method docstrings
• Remove extra quote symbol
• docs: Relative links improvements
• docs: Ingore ‘taskflow.’ prefix when sorting module index
• Update comment + six.text_type instead of str for name
• Avoid calling callbacks while holding locks
• Rename remote task to request
• Rework proxy publish functionality
• Updated from global requirements
• Use message.requeue instead of message.reject
• Lock test tweaks
• Move endpoint subclass finding to reflection util
• Correct LOG.warning in persistence utils
• Introduce remote tasks cache for worker-executor
• Worker-based engine clean-ups
• A few worker-engine cleanups
• Add a delay before releasing the lock
• Allow connection string to be just backend name
• Get rid of openstack.common.py3kcompat
• Clean-up several comments in reflection.py
• Fix try_clean not getting the job_path
• Updated from global requirements
• Rename uuid to topic
• Fixups for threads_count usage and logging
• Use the stop watch utility instead of custom timing
• Unify usage of storage error exception type
• Add zookeeper job/jobboard impl
• Updated from global requirements
• Removed copyright from empty files
• Remove extraneous vim configuration comments
• Use six.text_type() instead of str() in sqlalchemy backend
• Fix dummy lock missing pending_writers method
• Move some common/to be shared kazoo utils to kazoo_utils
• Switch to using the type checking decode_json
• Fix few spelling and grammar errors
• Fixed spelling error
• Run action-engine tests with worker-based engine
• Message-oriented worker-based flow with kombu
• Check atom doesn’t provide and return same values
• Fix command for pylint tox env
• Remove locale overrides form tox template
• Reduce test and optional requirements to global requirements
• Rework sphinx documentation
• Remove extraneous vim configuration comments
• Sync with global requirements
• Instead of doing set diffing just partition when state checking
• Add ZooKeeper backend to examples
• Storage protects lower level backend against thread safety
• Remove tox locale overrides
• Update .gitreview after repo rename
• Small storage tests clean-up
• Support building wheels (PEP-427)

0.1.3¶

• Add validate() base method
• Fix deadlock on waiting for pending_writers to be empty
• Rename self._zk to self._client
• Use listener instead of AutoSuspendTask in test_suspend_flow
• Use test utils in test_suspend_flow
• Use reader/writer locks in storage
• Allow the usage of a passed in sqlalchemy engine
• Be really careful with non-ascii data in exceptions/failures
• Run zookeeper tests if localhost has a compat. zookeeper server
• Add optional-requirements.txt
• Move kazoo to testenv requirements
• Unpin testtools version and bump subunit to >=0.0.18
• Remove use of str() in utils.misc.Failure
• Be more resilent around import/detection/setup errors
• Some zookeeper persistence improvements/adjustments
• Add a validate method to dir and memory backends
• Update oslo copy to oslo commit 39e1c5c5f39204
• Update oslo.lock from incubator commit 3c125e66d183
• Refactor task/flow flattening
• Engine tests refactoring
• Tests: don’t pass ‘values’ to task constructor
• Test fetching backends via entry points
• Pin testtools to 0.9.34 in test requirements
• Ensure we register the new zookeeper backend as an entrypoint
• Implement ZooKeeper as persistence storage backend
• Use addCleanup instead of tearDown in test_sql_persistence
• Retain the same api for all helpers
• Update execute/revert comments
• Added more unit tests for Task and FunctorTask
• Doc strings and comments clean-up
• List examples function doesn’t accept arguments
• Tests: Persistence test mixin fix
• Test using mysql + postgres if available
• Clean-up and improve async-utils tests
• Use already defined PENDING variable
• Add utilities for working with binary data
• Cleanup engine base class
• Engine cleanups
• Update atom comments
• Put full set of requirements to py26, py27 and py33 envs
• Add base class Atom for all flow units
• Add more requirements to cover tox environment
• Put SQLAlchemy requirements on single line
• Proper exception raised from check_task_transition
• Fix function name typo in persistence utils
• Use the same way of assert isinstance in all tests
• Minor cleanup in test_examples
• Add possibility to create Failure from exception
• Exceptions cleanup
• Alter is_locked() helper comment
• Add a setup.cfg keywords to describe taskflow
• Use the released toxgen tool instead of our copy

0.1.2¶

• Move autobinding to task base class
• Assert functor task revert/execute are callable
• Use the six callback checker
• Add envs for different sqlalchemy versions
• Refactor task handler binding
• Move six to the right location
• Use constants for the execution event strings
• Added htmlcov folder to .gitignore
• Reduce visibility of task_action
• Change internal data store of LogBook from list to dict
• Misc minor fixes to taskflow/examples
• Add connection_proxy param
• Ignore doc build files
• Fix spelling errors
• Switch to just using tox
• Enable H202 warning for flake8
• Check tasks should not provide same values
• Allow max_backoff and use count instead of attempts
• Skip invariant checking and adding when nothing provided
• Avoid not_done naming conflict
• Add stronger checking of backend configuration
• Raise type error instead of silencing it
• Move the container fetcher function to utils
• Explicitly list the valid transitions to RESUMING state
• Name the graph property the same as in engine
• Bind outside of the try block
• Graph action refactoring
• Add make_completed_future to async_utils
• Update oslo-incubator copy to oslo-incubator commit 8b2b0b743
• Ensure that mysql traditional mode is enabled
• Move async utils to own file
• Update requirements from opentack/requirements
• Code cleanup for eventlet_utils.wait_fo_any
• Refactor engine internals
• Add wait_for_any method to eventlet utils
• Introduce TaskExecutor
• Run some engine tests with eventlet if it’s available
• Do not create TaskAction for each task
• Storage: use names instead of uuids in interface
• Add tests for metadata updates
• Fix sqlalchemy 0.8 issues
• Fix minor python3 incompatibility
• Speed up FlowDetail.find
• Fix misspellings
• Raise exception when trying to run empty flow
• Use update_task_metadata in set_task_progress
• Capture task duration
• Fix another instance of callback comparison
• Don’t forget to return self
• Fixes how instances methods are not deregistered
• Targeted graph flow pattern
• All classes should explicitly inherit object class
• Initial commit of sphinx related files
• Improve is_valid_attribute_name utility function
• Coverage calculation improvements
• Fix up python 3.3 incompatabilities

0.1.1¶

• Pass flow failures to task’s revert method
• Storage: add methods to get all flow failures
• Pbr requirement went missing
• Update code to comply with hacking 0.8.0
• Don’t reset tasks to PENDING state while reverting
• Let pbr determine version automatically
• Be more careful when passing result to revert()

0.1¶

• Support for optional task arguments
• Do not erase task progress details
• Storage: restore injected data on resumption
• Inherit the greenpool default size
• Add debug logging showing what is flattened
• Remove incorrect comment
• Unit tests refactoring
• Use py3kcompat.urlutils from oslo instead of six.urllib_parse
• Update oslo and bring py3kcompat in
• Support several output formats in state_graph tool
• Remove task_action state checks
• Wrapped exception doc/intro comment updates
• Doc/intro updates for simple_linear_listening
• Add docs/intro to simple_linear example
• Update intro/comments for reverting_linear example
• Add docs explaining what/how resume_volume_create works
• A few resuming from backend comment adjustments
• Add an introduction to explain resume_many example
• Increase persistence example comments
• Boost graph flow example comments
• Also allow “_” to be valid identifier
• Remove uuid from taskflow.flow.Flow
• A few additional example boot_vm comments + tweaks
• Add a resuming booting vm example
• Add task state verification
• Beef up storage comments
• Removed unused utilities
• Helpers to save flow factory in metadata
• Storage: add flow name and uuid properties
• Create logbook if not provided for create_flow_details
• Prepare for 0.1 release
• Comment additions for exponential backoff
• Beef up the action engine comments
• Pattern comment additions/adjustments
• Add more comments to flow/task
• Save with the same connection
• Add a persistence util logbook formatting function
• Rename get_graph() -> execution_graph
• Continue adding docs to examples
• Add more comments that explain example & usage
• Add more comments that explain example & usage
• Add more comments that explain example & usage
• Add more comments that explain example & usage
• Fix several python3 incompatibilities
• Python3 compatibility for utils.reflection
• No module name for builtin type and exception names
• Fix python3 compatibility issues in examples
• Fix print statements for python 2/3
• Add a mini-cinder volume create with resumption
• Update oslo copy and bring over versionutils
• Move toward python 3/2 compatible metaclass
• Add a secondary booting vm example
• Resumption from backend for action engine
• A few wording/spelling adjustments
• Create a green executor & green future
• Add a simple mini-billing stack example
• Add a example which uses a sqlite persistence layer
• Add state to dot->svg tool
• Add a set of useful listeners
• Remove decorators and move to utils
• Add reasons as to why the edges were created
• Fix entrypoints being updated/created by update.py
• Validate each flow state change
• Update state sequence for failed flows
• Flow utils and adding comments
• Bump requirements to the latest
• Add a inspect sanity check and note about bound methods
• Some small exception cleanups
• Check for duplicate task names on flattening
• Correctly save task versions
• Allow access by index
• Fix importing of module files
• Wrapping and serializing failures
• Simpler API to load flows into engines
• Avoid setting object variables
• A few adjustments to the progress code
• Cleanup unused states
• Remove d2to dependency
• Warn if multiple providers found
• Memory persistence backend improvements
• Create database from models for SQLite
• Don’t allow mutating operations on the underlying graph
• Add graph density
• Suspend single and multi threaded engines
• Remove old tests for unexisted flow types
• Boot fake vm example fixed
• Export graph to dot util
• Remove unused utility classes
• Remove black list of graph flow
• Task decorator was removed and examples updated
• Remove weakref usage
• Add basic sanity tests for unordered flow
• Clean up job/jobboard code
• Add a directory/filesystem based persistence layer
• Remove the older (not used) resumption mechanism
• Reintegrate parallel action
• Add a flow flattening util
• Allow to specify default provides at task definition
• Graph flow, sequential graph action
• Task progress
• Verify provides and requires
• Remap the emails of the committers
• Use executors instead of pools
• Fix linked exception forming
• Remove threaded and distributed flows
• Add check that task provides all results it should
• Use six string types instead of basestring
• Remove usage of oslo.db and oslo.config
• Move toward using a backend+connection model
• Add provides and requires properties to Flow
• Fixed crash when running the engine
• Remove the common config since its not needed
• Allow the lock decorator to take a list
• Allow provides to be a set and results to be a dictionary
• Allow engines to be copied + blacklist broken flows
• Add link to why we have to make this factory due to late binding
• Use the lock decorator and close/join the thread pool
• Engine, task, linear_flow unification
• Combine multiple exceptions into a linked one
• Converted some examples to use patterns/engines
• MultiThreaded engine and parallel action
• State management for engines
• Action engine: save task results
• Initial implementation of action-based engine
• Further updates to update.py
• Split utils module
• Rename Task.__call__ to Task.execute
• Reader/writer no longer used
• Rename “revert_with” => “revert” and “execute_with” to “execute”
• Notify on task reversion
• Have runner keep the exception
• Use distutil version classes
• Add features to task.Task
• Add get_required_callable_args utility function
• Add get_callable_name utility function
• Require uuid + move functor_task to task.py
• Check examples when running tests
• Use the same root test class
• LazyPluggable is no longer used
• Add a locally running threaded flow
• Change namings in functor_task and add docs to its __init__
• Rework the persistence layer
• Do not have the runner modify the uuid
• Refactor decorators
• Nicer way to make task out of any callable
• Use oslo’s sqlalchemy layer
• File movements
• Added Backend API Database Implementation
• Added Memory Persistence API and Generic Datatypes
• Resync the latest oslo code
• Remove openstack.common.exception usage
• Forgot to move this one to the right folder
• Add a new simple calculator example
• Quiet the provider linking
• Deep-copy not always possible
• Add a example which simulates booting a vm
• Add a more complicated graph example
• Move examples under the source tree
• Adjust a bunch of hacking violations
• Fix typos in test_linear_flow.py and simple_linear_listening.py
• Fix minor code style
• Fix two minor bugs in docs/examples
• Show file modifications and fix dirpath based on config file
• Add a way to use taskflow until library stabilized
• Provide the length of the flows
• Parents should be frozen after creation
• Allow graph dependencies to be manually provided
• Add helper reset internals function
• Move to using pbr
• Unify creation/usage of uuids
• Use the runner interface as the best task lookup
• Ensure we document and complete correct removal
• Pass runners instead of task objects/uuids
• Move how resuming is done to be disconnected from jobs/flows
• Clear out before connecting
• Make connection/validation of tasks be after they are added
• Add helper to do notification
• Store results by add() uuid instead of in array format
• Integrate better locking and a runner helper class
• Cleaning up various components
• Move some of the ordered flow helper classes to utils
• Allow instance methods to be wrapped and unwrapped correctly
• Add a start of a few simple examples
• Update readme to point to links
• Fix most of the hacking rules
• Fix all flake8 E* and F* errors
• Fix the current flake8 errors
• Don’t keep the state/version in the task name
• Dinky change to trigger jenkins so I can cleanup
• Add the task to the accumulator before running
• Add .settings and .venv into .gitignore
• Fix tests for python 2.6
• Add the ability to soft_reset a workflow
• Add a .gitreview file so that git-review works
• Ensure we have an exception and capture the exc_info
• Update how graph results are fetched when they are optional
• Allow for optional task requirements
• We were not notifying when errors occured so fix that
• Bring over the nova get_wrapped_function helper and use it
• Allow for passing in the metadata when creating a task detail entry
• Update how the version task functor attribute is found
• Remove more tabs incidents
• Removed test noise and formatted for pep8
• Continue work on decorator usage
• Ensure we pickup the packages
• Fixed pep8 formatting… Finally
• Add flow disassociation and adjust the assocate path
• Add a setup.cfg and populate it with a default set of nosetests options
• Fix spacing
• Add a better task name algorithm
• Add a major/minor version
• Add a get many attr/s and join helper functions
• Reduce test noise
• Fix a few unit tests due to changes
• Ensure we handle functor names and resetting correctly
• Remove safe_attr
• Modifying db tests
• Removing .pyc
• Fixing .py in .gitignore
• Update db api test
• DB api test cases and revisions
• Allow for turning off auto-extract and add a test
• Use a function to filter args and add comments
• Use update instead of overwrite
• Move decorators to new file and update to use better wraps()
• Continue work with decorator usage
• Update with adding a provides and requires decorator for standalone function usage
• Instead of apply use __call__
• Add comment to why we accumulate before notifying task listeners
• Use a default sqlite backing using a taskflow file
• Add a basic rollback accumlator test
• Use rollback accumulator and remove requires()/provides() from being functions
• Allow (or disallow) multiple providers of items
• Clean the lines in a seperate function
• Resync with oslo-incubator
• Remove uuid since we are now using uuidutils
• Remove error code not found in strict version of pylint
• Include more dev testing packages + matching versions
• Update dependencies for new db/distributed backends
• Move some of the functions to use there openstack/common counterparts
• More import fixups
• Patch up the imports
• Fix syntax error
• Rename cause -> exception and make exception optional
• Allow any of the previous tasks to satisfy requirements
• Ensure we change the self and parents states correctly
• Always have a name provided
• Cleaning up files/extraneous files/fixing relations
• More pylint cleanups
• Make more tests for linear and shuffle test utils to common file
• Only do differences on set objects
• Ensure we fetch the appropriate inputs for the running task
• Have the linear workflow verify the tasks inputs
• Specify that task provides/requires must be an immutable set
• Clean Up for DB changes
• db api defined
• Fleshing out sqlalchemy api
• Almost done with sqlalchemy api
• Fix state check
• Fix flow exception wording
• Ensure job is pending before we associate and run
• More pylint cleanups
• Ensure we associate with parent flows as well
• Add a nice run() method to the job class that will run a flow
• Massive pylint cleanup
• deleting .swp files
• deleting .swp files
• cleaning for initial pull request
• Add a few more graph ordering test cases
• Update automatic naming and arg checks
• Update order calls and connect call
• Move flow failure to flow file and correctly catch ordering failure
• Just kidding - really fixing relations this time
• Fixing table relations
• Allow job id to be passed in
• Check who is being connected to and ensure > 0 connectors
• Move the await function to utils
• Graph tests and adjustments releated to
• Add graph flow tests
• Fix name changes missed
• Enable extraction of what a functor requires from its args
• Called flow now, not workflow
• Second pass at models
• More tests
• Simplify existence checks
• More pythonic functions and workflow -> flow renaming
• Added more utils, added model for workflow
• Spelling errors and stuff
• adding parentheses to read method
• Implemented basic sqlalchemy session class
• Setting up Configs and SQLAlchemy/DB backend
• Fix the import
• Use a different logger method if tolerant vs not tolerant
• More function comments
• Add a bunch of linear workflow tests
• Allow resuming stage to be interrupted
• Fix the missing context variable
• Moving over celery/distributed workflows
• Update description wording
• Pep fix
• Instead of using notify member functions, just use functors
• More wording fixes
• Add the ability to alter the task failure reconcilation
• Correctly run the tasks after partial resumption
• Another wording fix
• Spelling fix
• Allow the functor task to take a name and provide it a default
• Updated functor task comments
• Move some of the useful helpers and functions to other files
• Add the ability to associate a workflow with a job
• Move the useful functor wrapping task from test to wrappers file
• Add a thread posting/claiming example and rework tests to use it
• After adding reposting/unclaiming reflect those changes here
• Add a nicer string name that shows what the class name is
• Adjust some of the states jobs and workflows could be in
• Add a more useful name that shows this is a task
• Remove impl of erasing which doesn’t do much and allow for job reposting
• Various reworkings
• Rename logbook contents
• Get a memory test example working
• Add a pylintrc file to be used with pylint
• Rework the logbook to be chapter/page based
• Move ordered workflow to its own file
• Increase the number of comments
• Start adding in a more generic DAG based workflow
• Remove dict_provider dependency
• Rework due to code comments
• Begin adding testing functionality
• Fill in the majority of the memory job
• Rework how we should be using lists instead of ordereddicts for optimal usage
• Add a context manager to the useful read/writer lock
• Ensure that the task has a name
• Add a running state which can be used to know when a workflow is running
• Rename the date created field
• Add some search functionality and adjust the await() function params
• Remove and add a few new exceptions
• Shrink down the exposed methods
• Remove the promise object for now
• Add RESUMING
• Fix spelling
• Continue on getting ready for the memory impl. to be useful
• On python <= 2.6 we need to import ordereddict
• Remove a few other references to nova
• Add in openstack common and remove patch references
• Move simplification over
• Continue moving here
• Update README.md
• Update readme
• Move the code over for now
• Initial commit