CHANGES

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