pax_global_header00006660000000000000000000000064123363477070014526gustar00rootroot0000000000000052 comment=44b2d0239679e8d86cefd9ed7f2424aa4e29a34e django-housekeeping-1.0/000077500000000000000000000000001233634770700153145ustar00rootroot00000000000000django-housekeeping-1.0/.gitignore000066400000000000000000000000141233634770700172770ustar00rootroot00000000000000*.swp *.pyc django-housekeeping-1.0/COPYING000066400000000000000000001045131233634770700163530ustar00rootroot00000000000000 GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007 Copyright (C) 2007 Free Software Foundation, Inc. Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The GNU General Public License is a free, copyleft license for software and other kinds of works. The licenses for most software and other practical works are designed to take away your freedom to share and change the works. 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If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot convey a covered work so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not convey it at all. For example, if you agree to terms that obligate you to collect a royalty for further conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License would be to refrain entirely from conveying the Program. 13. Use with the GNU Affero General Public License. Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work licensed under version 3 of the GNU Affero General Public License into a single combined work, and to convey the resulting work. 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If the Program does not specify a version number of the GNU General Public License, you may choose any version ever published by the Free Software Foundation. If the Program specifies that a proxy can decide which future versions of the GNU General Public License can be used, that proxy's public statement of acceptance of a version permanently authorizes you to choose that version for the Program. Later license versions may give you additional or different permissions. However, no additional obligations are imposed on any author or copyright holder as a result of your choosing to follow a later version. 15. Disclaimer of Warranty. THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. 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If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee. END OF TERMS AND CONDITIONS How to Apply These Terms to Your New Programs If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms. To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. Copyright (C) This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . Also add information on how to contact you by electronic and paper mail. If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode: Copyright (C) This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an "about box". You should also get your employer (if you work as a programmer) or school, if any, to sign a "copyright disclaimer" for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see . The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read . django-housekeeping-1.0/COPYING.LESSER000066400000000000000000000167431233634770700173560ustar00rootroot00000000000000 GNU LESSER GENERAL PUBLIC LICENSE Version 3, 29 June 2007 Copyright (C) 2007 Free Software Foundation, Inc. Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. This version of the GNU Lesser General Public License incorporates the terms and conditions of version 3 of the GNU General Public License, supplemented by the additional permissions listed below. 0. Additional Definitions. As used herein, "this License" refers to version 3 of the GNU Lesser General Public License, and the "GNU GPL" refers to version 3 of the GNU General Public License. "The Library" refers to a covered work governed by this License, other than an Application or a Combined Work as defined below. An "Application" is any work that makes use of an interface provided by the Library, but which is not otherwise based on the Library. Defining a subclass of a class defined by the Library is deemed a mode of using an interface provided by the Library. A "Combined Work" is a work produced by combining or linking an Application with the Library. The particular version of the Library with which the Combined Work was made is also called the "Linked Version". The "Minimal Corresponding Source" for a Combined Work means the Corresponding Source for the Combined Work, excluding any source code for portions of the Combined Work that, considered in isolation, are based on the Application, and not on the Linked Version. 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If you modify a copy of the Library, and, in your modifications, a facility refers to a function or data to be supplied by an Application that uses the facility (other than as an argument passed when the facility is invoked), then you may convey a copy of the modified version: a) under this License, provided that you make a good faith effort to ensure that, in the event an Application does not supply the function or data, the facility still operates, and performs whatever part of its purpose remains meaningful, or b) under the GNU GPL, with none of the additional permissions of this License applicable to that copy. 3. Object Code Incorporating Material from Library Header Files. The object code form of an Application may incorporate material from a header file that is part of the Library. You may convey such object code under terms of your choice, provided that, if the incorporated material is not limited to numerical parameters, data structure layouts and accessors, or small macros, inline functions and templates (ten or fewer lines in length), you do both of the following: a) Give prominent notice with each copy of the object code that the Library is used in it and that the Library and its use are covered by this License. b) Accompany the object code with a copy of the GNU GPL and this license document. 4. Combined Works. 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If the Library as you received it specifies that a proxy can decide whether future versions of the GNU Lesser General Public License shall apply, that proxy's public statement of acceptance of any version is permanent authorization for you to choose that version for the Library. django-housekeeping-1.0/README.md000066400000000000000000000034721233634770700166010ustar00rootroot00000000000000# django-housekeeping Pluggable housekeeping framework for Django sites. django\_housekeeping provides a management command that finds and run tasks defined by your Django apps. Tasks can declare dependencies on each other, run in multiple stages and provide infrastructure that other tasks can use. ## Example ### Code # myapp/housekeeping.py: import django_housekeeping as hk # Order of execution of the housekeeping stages defined in this module STAGES = ["backup", "main"] class BackupDB(hk.Task): """ Backup of the whole database """ def run_backup(self, stage): # ...backup the database... class DailyAggregates(hk.Task): """ Compute daily aggregates """ def run_main(self, stage): # ...compute... class MonthlyAggregates(hk.Task): """ Compute monthly aggregates """ DEPENDS = [DailyAggregates] def run_main(self, stage): # ...compute monthly averages from daily averages... ### Execution django\_housekeeping adds a `housekeeping` management command that runs all tasks. You can schedule `./manage.py housekeeping` to run once a day to automate the site maintenance. To run the housekeeping tasks, just run: $ ./manage.py housekeeping To see the order in which the tasks would be run, use: $ ./manage.py housekeeping --list You can use `--logfile` to write a verbose log file, or run only some tasks using `--include` and `--exclude`. See `./manage.py housekeeping --help` for details. ## Configuration There is currently only one configuration key for `settings.py`: `HOUSEKEEPING_ROOT`. Set it to a string with a directory pathname, and it is the same as if `--outdir=OUTDIR` is set. Example: HOUSEKEEPING_ROOT = "/srv/mysite/housekeeping/" django-housekeeping-1.0/debian/000077500000000000000000000000001233634770700165365ustar00rootroot00000000000000django-housekeeping-1.0/debian/changelog000066400000000000000000000004721233634770700204130ustar00rootroot00000000000000django-housekeeping (0.1-1) UNRELEASED; urgency=low * source package automatically created by stdeb 0.6.0+git * fixed packages param in setup and avoid unicode_literals in setup.py * prepared patch to support python3 using six -- Marco Bardelli Mon, 05 May 2014 21:43:35 +0200 django-housekeeping-1.0/debian/compat000066400000000000000000000000021233634770700177340ustar00rootroot000000000000009 django-housekeeping-1.0/debian/control000066400000000000000000000015211233634770700201400ustar00rootroot00000000000000Source: django-housekeeping Maintainer: Marco Bardelli Section: python Priority: optional Build-Depends: debhelper (>= 9), dh-python, quilt, python-all (>= 2.6.6-3), python3-all, python3-six, python-six Standards-Version: 3.9.5 Homepage: https://github.com/spanezz/django-housekeeping X-Python-Version: >= 2.6 X-Python3-Version: >= 3.2 Package: python-django-housekeeping Architecture: all Depends: ${misc:Depends}, ${python:Depends}, python-six Description: Pluggable housekeeping framework for Django sites Extensible framework to manage inter-dependents tasks execution. Package: python3-django-housekeeping Architecture: all Depends: ${misc:Depends}, ${python3:Depends}, python3-six Description: Pluggable housekeeping framework for Django sites Extensible framework to manage inter-dependents tasks execution. django-housekeeping-1.0/debian/copyright000066400000000000000000000006501233634770700204720ustar00rootroot00000000000000Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/ Upstream-Name: django-housekeeping Upstream-Contact: Enrico Zini Source: https://github.com/spanezz/django-housekeeping Files: * Copyright: 2013 Enrico Zini License: LGPL-3+ License: LGPL-3+ The full text of the LGPL version 3 is distributed in /usr/share/common-licenses/LGPL-3 on Debian systems. django-housekeeping-1.0/debian/patches/000077500000000000000000000000001233634770700201655ustar00rootroot00000000000000django-housekeeping-1.0/debian/patches/series000066400000000000000000000000471233634770700214030ustar00rootroot00000000000000fix_setup_py.diff support_2_and_3.diff django-housekeeping-1.0/debian/rules000077500000000000000000000011661233634770700176220ustar00rootroot00000000000000#!/usr/bin/make -f export DH_VERBOSE=1 export PYBUILD_NAME=django-housekeeping %: dh $@ --with python2,python3 --buildsystem=pybuild # dh $@ --with python2 --buildsystem=pybuild pn = $(shell dpkg-parsechangelog | grep ^Source | cut -d\ -f2) ov = $(shell dpkg-parsechangelog | grep ^Version | cut -d\ -f2 | cut -d- -f1) git-orig-source: dh_testdir test -d .git && \ git archive --prefix=$(pn)-$(ov)/ upstream-gh/master | \ xz -9c > ../$(pn)_$(ov).orig.tar.xz || true # waiting for upstream release ... use git get-orig-source: dh_testdir test -e ../$(pn)_$(ov).orig.tar.xz || \ make -f debian/rules git-orig-source django-housekeeping-1.0/debian/source/000077500000000000000000000000001233634770700200365ustar00rootroot00000000000000django-housekeeping-1.0/debian/source/format000066400000000000000000000000141233634770700212440ustar00rootroot000000000000003.0 (quilt) django-housekeeping-1.0/debian/source/options000066400000000000000000000000371233634770700214540ustar00rootroot00000000000000extend-diff-ignore="\.egg-info"django-housekeeping-1.0/debian/watch000066400000000000000000000001271233634770700175670ustar00rootroot00000000000000version=3 https://github.com/spanezz/django-housekeeping/tags .*/v(\d[\d\.]*)\.tar\.gz django-housekeeping-1.0/django_housekeeping/000077500000000000000000000000001233634770700213245ustar00rootroot00000000000000django-housekeeping-1.0/django_housekeeping/__init__.py000066400000000000000000000016501233634770700234370ustar00rootroot00000000000000# Pluggable housekeeping framework for Django sites # # Copyright (C) 2013--2014 Enrico Zini # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 3.0 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library. from __future__ import print_function from __future__ import absolute_import from __future__ import division from __future__ import unicode_literals from .task import Task from .run import Housekeeping django-housekeeping-1.0/django_housekeeping/management/000077500000000000000000000000001233634770700234405ustar00rootroot00000000000000django-housekeeping-1.0/django_housekeeping/management/__init__.py000066400000000000000000000000001233634770700255370ustar00rootroot00000000000000django-housekeeping-1.0/django_housekeeping/management/commands/000077500000000000000000000000001233634770700252415ustar00rootroot00000000000000django-housekeeping-1.0/django_housekeeping/management/commands/__init__.py000066400000000000000000000000001233634770700273400ustar00rootroot00000000000000django-housekeeping-1.0/django_housekeeping/management/commands/housekeeping.py000066400000000000000000000122141233634770700303010ustar00rootroot00000000000000# Pluggable housekeeping framework for Django sites # # Copyright (C) 2013--2014 Enrico Zini # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 3.0 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library. from __future__ import print_function from __future__ import absolute_import from __future__ import division from __future__ import unicode_literals from django.core.management.base import BaseCommand, CommandError from django_housekeeping import Housekeeping import optparse import datetime import sys import logging log = logging.getLogger(__name__) class IncludeExcludeFilter(object): def __init__(self, include, exclude): self.include = include self.exclude = exclude def __call__(self, name): import fnmatch if self.include is not None: for pattern in self.include: if not fnmatch.fnmatch(name, pattern): return False if self.exclude is not None: for pattern in self.exclude: if fnmatch.fnmatch(name, pattern): return False return True class Command(BaseCommand): help = 'Run site housekeeping' option_list = BaseCommand.option_list + ( optparse.make_option("--dry-run", action="store_true", dest="dry_run", default=None, help="Go through all the motions without making any changes"), optparse.make_option("--include", action="append", dest="include", default=None, help="Include stages/tasks matching this shell-like pattern. Can be used multiple times."), optparse.make_option("--exclude", action="append", dest="exclude", default=None, help="Exclude stages/tasks matching this shell-like pattern. Can be used multiple times."), optparse.make_option("--list", action="store_true", dest="do_list", default=False, help="List all available tasks"), optparse.make_option("--outdir", action="store", dest="outdir", default=None, help="Store housekeeping output in a subdirectory of this directory. Default is not to write any output."), optparse.make_option("--logfile", action="store", dest="logfile", default=None, help="Also log all messages to the given file. You can use strftime escape sequences."), optparse.make_option("--logfile-debug", action="store_true", dest="logfile_debug", default=False, help="Also log debug messages to the log file"), optparse.make_option("--graph", action="store_true", dest="do_graph", default=False, help="Output all dependency graphs"), ) def handle(self, dry_run=False, include=None, exclude=None, logfile=None, logfile_debug=False, do_list=False, do_graph=False, outdir=None, *args, **opts): FORMAT = "%(asctime)-15s %(levelname)s %(message)s" handlers = [] verbosity = int(opts.get('verbosity')) # If create a file logger, if requested if logfile: fname = datetime.datetime.utcnow().strftime(logfile) file_handler = logging.FileHandler(fname, encoding="utf8") file_handler.setFormatter(logging.Formatter(FORMAT)) if logfile_debug: file_handler.setLevel(logging.DEBUG) else: file_handler.setLevel(logging.INFO) handlers.append(file_handler) # And a stderr logger stderr_handler = logging.StreamHandler(stream=sys.stderr) stderr_handler.setFormatter(logging.Formatter(FORMAT)) if verbosity == 0: stderr_handler.setLevel(logging.ERROR) elif verbosity == 1: stderr_handler.setLevel(logging.WARNING) elif verbosity == 2: stderr_handler.setLevel(logging.INFO) elif verbosity == 3: stderr_handler.setLevel(logging.DEBUG) else: stderr_handler.setLevel(logging.WARNING) handlers.append(stderr_handler) root_logger = logging.getLogger("") for h in handlers: root_logger.addHandler(h) root_logger.setLevel(min(x.level for x in handlers)) run_filter = None if include is not None or exclude is not None: run_filter = IncludeExcludeFilter(include, exclude) hk = Housekeeping(dry_run=dry_run, outdir=outdir) hk.autodiscover() hk.init() if do_list: for name in hk.list_run(run_filter=run_filter): print(name) elif do_graph: hk.make_dot(sys.stdout) else: hk.run(run_filter=run_filter) django-housekeeping-1.0/django_housekeeping/models.py000066400000000000000000000015621233634770700231650ustar00rootroot00000000000000# Pluggable housekeeping framework for Django sites # # Copyright (C) 2013--2014 Enrico Zini # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 3.0 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library. from __future__ import print_function from __future__ import absolute_import from __future__ import division from __future__ import unicode_literals django-housekeeping-1.0/django_housekeeping/report.py000066400000000000000000000125161233634770700232160ustar00rootroot00000000000000# coding: utf8 # Pluggable housekeeping framework for Django sites # # Copyright (C) 2013--2014 Enrico Zini # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 3.0 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library. from __future__ import print_function from __future__ import absolute_import from __future__ import division from __future__ import unicode_literals import io import os, os.path import sys import six class Report(object): def __init__(self, hk): self.hk = hk self.dotfiles = [] self.root = None def make_dotfile(self, name): self.dotfiles.append(name) return io.open(os.path.join(self.root, name), "wt", encoding="utf8") def print_title(self, title, underline_char, file=sys.stdout): print(title, file=file) print(underline_char * len(title), file=file) def print_depgraph_legend(self, file=sys.stdout): print(" +------------+---------------------------------------+", file=file) print(" | Arrow type | Meaning |", file=file) print(" +============+=======================================+", file=file) print(" | Solid | Dependency |", file=file) print(" +------------+---------------------------------------+", file=file) print(" | Bold | Dependency and chosen execution order |", file=file) print(" +------------+---------------------------------------+", file=file) print(" | Dashed | Chosen execution order |", file=file) print(" +------------+---------------------------------------+", file=file) def generate(self): if not self.hk.outdir: return # Main report dir self.root = self.hk.outdir.path("report") self.generate_dotfiles() with io.open(os.path.join(self.root, "report.rst"), "wt", encoding="utf8") as out: self.generate_report(file=out) # Makefile to build the HTML report with io.open(os.path.join(self.root, "Makefile"), "wt", encoding="utf8") as out: print("DOTFILES =", *self.dotfiles, file=out) print("", file=out) print("%.png: %.dot", file=out) print("\tdot -T png $< -o $@", file=out) print("", file=out) print("report.html: report.rst $(DOTFILES:.dot=.png)", file=out) print("\trst2html $< $@", file=out) def generate_report(self, file=sys.stdout): self.print_title("Housekeeping report", "=", file=file) print(".. figure:: tasks.png", file=file) print(" :alt: task dependency graph", file=file) print("", file=file) print(" Dependencies and order of instantiation of tasks", file=file) print("", file=file) self.print_depgraph_legend(file=file) print("", file=file) # TODO: add task instantiation log extract print(".. figure:: stages.png", file=file) print(" :alt: stages dependency graph", file=file) print("", file=file) print(" Dependencies and order of execution of stages", file=file) print("", file=file) self.print_depgraph_legend(file=file) print("", file=file) for idx, stage in enumerate(self.hk.stage_schedule.sequence, start=1): stage = self.hk.stages[stage] self.print_title("Stage {}: {}".format(idx, stage.name), "-", file=file) print(".. figure:: stage-{}.png".format(stage.name), file=file) print(" :alt: task execution dependency graph", file=file) print("", file=file) print(" Dependencies and order of execution of tasks", file=file) print("", file=file) self.print_depgraph_legend(file=file) print("", file=file) # TODO: add task docstring # TODO: add task run info # TODO: add task log def generate_dotfiles(self): """ Generate .dot files with dependency graphs """ with self.make_dotfile("tasks.dot") as out: print("digraph TASKS {", file=out) print(' label="Tasks"', file=out) self.hk.task_schedule.make_dot(out, formatter=lambda x:x.IDENTIFIER) print("}", file=out) with self.make_dotfile("stages.dot") as out: print("digraph STAGES {", file=out) print(' label="Stages"', file=out) self.hk.stage_schedule.make_dot(out) print("}", file=out) for stage in six.itervalues(self.hk.stages): with self.make_dotfile("stage-{}.dot".format(stage.name)) as out: print("digraph {} {{".format(stage.name), file=out) print(' label="Stage {}"'.format(stage.name), file=out) stage.task_schedule.make_dot(out) print("}", file=out) django-housekeeping-1.0/django_housekeeping/run.py000066400000000000000000000402551233634770700225100ustar00rootroot00000000000000# coding: utf8 # Pluggable housekeeping framework for Django sites # # Copyright (C) 2013--2014 Enrico Zini # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 3.0 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library. from __future__ import print_function from __future__ import absolute_import from __future__ import division from __future__ import unicode_literals from .task import Task from . import toposort from .report import Report from collections import defaultdict import os import os.path import datetime import sys import time import inspect import logging import six if sys.version_info[0] >= 3: # Python 3 global unicode unicode = str global xrange xrange = range log = logging.getLogger(__name__) class RunInfo(object): """ Run a task and store info about its execution """ def __init__(self, stage, task, mock=False): self.stage = stage self.task = task self.mock = mock self.executed = False self.skipped_reason = None self.exception = None self.success = False self.elapsed = None self.clock_start = time.clock() def set_success(self): self.elapsed = datetime.timedelta(seconds=time.clock() - self.clock_start) self.exception = None self.skipped_reason = None self.success = True self.executed = True log.info("%s:%s:run_%s: ran successfully, %s", self.stage.name, self.task.IDENTIFIER, self.stage.name, self.elapsed) def set_exception(self, type, value, traceback): self.elapsed = datetime.timedelta(seconds=time.clock() - self.clock_start) self.exception = (type, value, traceback) self.skipped_reason = None self.success = False self.executed = True log.info("%s:%s:run_%s: failed, %s", self.stage.name, self.task.IDENTIFIER, self.stage.name, self.elapsed) def set_skipped(self, reason): self.elapsed = datetime.timedelta(seconds=0.0) self.exception = None self.skipped_reason = reason self.success = False self.executed = False log.info("%s:%s:run_%s: skipped: %s", self.stage.name, self.task.IDENTIFIER, self.stage.name, self.skipped_reason) class Schedule(object): def __init__(self): self.graph = defaultdict(set) self.sequence = None def add_node(self, node): self.graph.setdefault(node, set()) def add_edge(self, node_prev, node_next): self.graph[node_prev].add(node_next) def schedule(self): self.sequence = toposort.sort(self.graph) def make_dot(self, out, formatter=unicode): for node in self.sequence: print(' "{}"'.format(formatter(node)), file=out) # Arcs that have been selected as the final sequence selected = set() for i in xrange(len(self.sequence) - 1): selected.add((self.sequence[i], self.sequence[i+1])) for prev, arcs in six.iteritems(self.graph): for next in arcs: if (prev, next) in selected: selected.discard((prev, next)) style = " [color=red,penwidth=3.0]" else: style = "" print(' "{}" -> "{}"{};'.format(formatter(prev), formatter(next), style), file=out) for prev, next in selected: print(' "{}" -> "{}" [color=red, style=dashed];'.format(formatter(prev), formatter(next)), file=out) class Stage(object): def __init__(self, hk, name): self.hk = hk self.name = name self.tasks = {} self.task_schedule = Schedule() # Task execution results self.results = {} def add_task(self, task): self.tasks[task.IDENTIFIER] = task def schedule(self): """ Compute the order of execution of tasks objects in this stage, and set self.task_sequence to the sorted list of Task objects """ # Create nodes for all tasks for task in six.itervalues(self.tasks): self.task_schedule.add_node(task.IDENTIFIER) for task in six.itervalues(self.tasks): next = task.IDENTIFIER for prev in (x.IDENTIFIER for x in task.DEPENDS): if prev not in self.task_schedule.graph: log.debug("%s: skipping dependency %s -> %s that does not seem to be relevant for this stage", self.name, prev, next) continue self.task_schedule.add_edge(prev, next) self.task_schedule.schedule() def get_schedule(self): """ Generate the list of tasks as they would be executed """ for identifier in self.task_schedule.sequence: yield self.tasks[identifier] def get_results(self, task): """ Return TaskExecution results for a task, or None if it has not been run """ return self.results.get(task.IDENTIFIER, None) def reason_task_should_not_run(self, task, run_filter=None): """ If the task can run, it returns None. Else it returns a string describing why the task should not run. """ # Check if the task already ran if self.get_results(task) is not None: return "it has already been run" name = "{}:{}".format(self.name, task.IDENTIFIER) if run_filter and not run_filter(name): return "does to match current stage/task filter" # There is no need of checking dependencies recursively, since we don't # run a task unless all its dependencies have already been run # correctly for t in task.DEPENDS: # Ignore dependencies that do not want to run in this stage if t.IDENTIFIER not in self.tasks: continue exinfo = self.get_results(t) if exinfo is None: return "its dependency {} has not been run".format(t.IDENTIFIER) if not exinfo.executed: return "its dependency {} has not been run".format(t.IDENTIFIER) if not exinfo.success: return "its dependency {} has not run successfully".format(t.IDENTIFIER) return None def run_task(self, task, mock): run_info = RunInfo(self, task, mock=mock) # TODO: also store and log execution time meth_name = "run_{}".format(self.name) method = getattr(task, meth_name, None) if method is None: run_info.set_skipped("%s has no method %s", self.task.IDENTIFIER, meth_name) return run_info if mock: run_info.set_success() else: try: if not mock: method(self) except KeyboardInterrupt: raise except: log.exception("%s: %s failed", task.IDENTIFIER, meth_name) run_info.set_exception(*sys.exc_info()) else: run_info.set_success() return run_info def run(self, run_filter=None): for identifier in self.task_schedule.sequence: task = self.tasks[identifier] should_not_run = self.reason_task_should_not_run(task, run_filter=run_filter) if should_not_run is not None: run_info = RunInfo(self, task) run_info.set_skipped(should_not_run) self.results[identifier] = run_info continue mock = self.hk.test_mock and isinstance(task, self.hk.test_mock) self.results[identifier] = self.run_task(task, mock) class Outdir(object): def __init__(self, root): self.root = root self.outdir = None def init(self, hk): # Ensure the root dir exists if not os.path.exists(self.root): log.warning("output directory %s does not exist: creating it", self.root) os.makedirs(self.root, 0o777) # Create a new directory for this maintenance run candidate = None while True: if candidate is None: candidate = os.path.join(self.root, datetime.datetime.utcnow().strftime("%Y%m%d")) else: time.sleep(0.5) candidate = os.path.join(self.root, datetime.datetime.utcnow().strftime("%Y%m%d-%H%M%S")) try: os.mkdir(candidate, 0o777) break except OSError as e: import errno if e.errno != errno.EEXIST: raise self.outdir = candidate def path(self, relpath=None): """ Make sure the given subpath exists inside the output directory, and return the full path to it """ if relpath is None: return self.outdir res = os.path.join(self.outdir, relpath) if not os.path.exists(res): os.makedirs(res, 0o777) return res def cleanup(self): pass # TODO: optionally tar everything and remove the directory class Housekeeping(object): """ Housekeeping runner, that runs all Tasks from all installed apps """ def __init__(self, outdir=None, dry_run=False, test_mock=None): """ dry_run: if true, everything will be done except permanent changes outdir: root directory where we can create one directory for each housekeeping run, where the run output will be stored task_filter: set to a function to filter what tasks will be run. Note that the dependencies of a task are run even if task_filter refused them. test_mock: class or list of classes whose objects won't be run even if they are dependencies of tasks that will be run. Used during tests when you know what you are doing, for example to skip a database backup phase. """ self.dry_run = dry_run self.test_mock = test_mock if outdir is not None: self.outdir = Outdir(outdir) else: self.outdir = None self.report = None # All registered task classes self.task_classes = set() # Schedule for task instantiation self.task_schedule = Schedule() # Stage objects by name self.stages = {} # Stage run schedule self.stage_schedule = Schedule() def autodiscover(self): """ Autodiscover tasks from django apps """ from django.conf import settings from django.utils.importlib import import_module # Try to use the HOUSEKEEPING_ROOT Django setting to instantiate a # outdir, if we do not have one yet if self.outdir is None: outdir = getattr(settings, "HOUSEKEEPING_ROOT", None) if outdir is not None: self.outdir = Outdir(outdir) seen = set() for app_name in settings.INSTALLED_APPS: mod_name = "{}.housekeeping".format(app_name) try: mod = import_module(mod_name) except ImportError: continue log.debug("autodiscover: found module %s", mod_name) for cls_name, cls in inspect.getmembers(mod, inspect.isclass): if issubclass(cls, Task) and cls != Task: if cls in seen: continue seen.add(cls) cls.IDENTIFIER = "{}.{}".format(app_name, cls_name) log.debug("autodiscover: found task %s", cls.IDENTIFIER) self.register_task(cls) def _register_stage_dependencies(self, stages): """ Add stage information to the stage graph """ # Add a node to the graph for each stage for s in stages: self.stage_schedule.add_node(s) # Add arches for each couple in the dependency chain for i in range(0, len(stages) - 1): self.stage_schedule.add_edge(stages[i], stages[i+1]) def register_task(self, task_cls): """ Instantiate a task and add it as an attribute of this object """ if task_cls in self.task_classes: return # Make sure this class has an identifier if not task_cls.IDENTIFIER: task_cls.IDENTIFIER = "{}.{}".format(task_cls.__module__, task_cls.__name__) self.task_classes.add(task_cls) self.task_schedule.add_node(task_cls) for cls in task_cls.DEPENDS: self.register_task(cls) self.task_schedule.add_edge(cls, task_cls) def get_schedule(self): """ Generate the list of tasks as they would be executed """ for stage in self.stage_schedule.sequence: stage = self.stages[stage] for task in stage.get_schedule(): yield stage, task def init(self): """ Instantiate all Task objects, and schedule their execution """ # Schedule task instantiation self.task_schedule.schedule() # Create output directory if self.outdir: self.outdir.init(self) self.report = Report(self) # Instantiate all tasks for task_cls in self.task_schedule.sequence: # Instantiate the task task = task_cls(self) # If the task has a name, add it as an attribute of the Housekeeping # object if task_cls.NAME is not None: if hasattr(self, task_cls.NAME): raise Exception("Task {} instantiated twice".format(task_cls.NAME)) log.debug("sharing task %s as %s", task.IDENTIFIER, task.NAME) setattr(self, task.NAME, task) # Add stage information to the stage graph self._register_stage_dependencies(task.get_stages()) # Add the task to all its stages for name in task.get_stages(): stage = self.stages.get(name, None) if stage is None: self.stages[name] = stage = Stage(self, name) if hasattr(task, "run_{}".format(name)): stage.add_task(task) # Schedule execution of stages and tasks self.stage_schedule.schedule() for stage in six.itervalues(self.stages): stage.schedule() def run(self, run_filter=None): """ Run all tasks, collecting run statistics. If some dependency of a task did not run correctly, the task is skipped. """ for stage in self.stage_schedule.sequence: self.stages[stage].run(run_filter=run_filter) if self.outdir: self.report.generate() self.outdir.cleanup() def list_run(self, run_filter=None): for stage, task in self.get_schedule(): name = "{}:{}".format(stage.name, task.IDENTIFIER) if run_filter and not run_filter(name): continue yield(name) #def log_stats(self): # for task in self.tasks: # ex = self.get_results(task) # if ex is None: # log.info("%s: not run", task.IDENTIFIER) # else: # ex.log_stats() def make_dot(self, out): print("digraph TASKS {", file=out) print(' label="Tasks"', file=out) self.task_schedule.make_dot(out, formatter=lambda x:x.IDENTIFIER) print("}", file=out) print("digraph STAGES {", file=out) print(' label="Stages"', file=out) self.stage_schedule.make_dot(out) print("}", file=out) for stage in six.itervalues(self.stages): print("digraph {} {{".format(stage.name), file=out) print(' label="Stage {}"'.format(stage.name), file=out) stage.task_schedule.make_dot(out) print("}", file=out) django-housekeeping-1.0/django_housekeeping/task.py000066400000000000000000000044571233634770700226520ustar00rootroot00000000000000# Pluggable housekeeping framework for Django sites # # Copyright (C) 2013--2014 Enrico Zini # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 3.0 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library. from __future__ import print_function from __future__ import absolute_import from __future__ import division from __future__ import unicode_literals import inspect # Order of stages. # # For any string listed here, a run_$STRING method will be called, in the # same order as the STAGES list. # # In each stage, tasks are run in dependency order. STAGES = ["main"] class Task(object): """ A housekeeping task. Any subclass of this in an appname.housekeeping module will be automatically found and run during housekeeping """ # Define NAME to have this task made available to other tasks as a member # of Housekeeping NAME = None # Unique, human and machine readable identifier for this task, # automatically filled by Housekeeping during task discovery IDENTIFIER = None # Task classes that should be run before this one DEPENDS = [] def __init__(self, hk, **kw): """ Constructor hk: the Housekeeping object """ self.hk = hk #def run_main(self, stage): # """ # Run this housekeeping task # """ # pass def get_stages(self): """ Get the ordered list of stages for this task. """ # First look in the object or its class res = getattr(self, "STAGES", None) if res is not None: return res module = inspect.getmodule(self.__class__) # If that fails, look in the module res = getattr(module, "STAGES", None) if res is not None: return res # If that fails, return a default return ("main", ) django-housekeeping-1.0/django_housekeeping/tests.py000066400000000000000000000116151233634770700230440ustar00rootroot00000000000000# coding: utf8 # # Copyright (C) 2014 Enrico Zini # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 3.0 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library. from __future__ import print_function from __future__ import absolute_import from __future__ import division from __future__ import unicode_literals from . import Task, Housekeeping from . import toposort import unittest import os.path class TestHousekeeping(unittest.TestCase): def test_run(self): class TestTask(Task): run_count = 0 def run_main(self, stage): TestTask.run_count += 1 h = Housekeeping() h.register_task(TestTask) h.init() h.run() self.assertEqual(TestTask.run_count, 1) class TestToposort(unittest.TestCase): def test_simple(self): self.assertEqual(toposort.sort({ 0 : [2], 1: [2], 2: [3], 3: [] }), [1, 0, 2, 3]) self.assertRaises(ValueError, toposort.sort, { 0: [1], 1: [2], 2: [3], 3: [1] }) self.assertRaises(ValueError, toposort.sort, { 0: [1], 1: [0], 2: [3], 3: [2] }) def test_real(self): class Backup1(Task): STAGES = [ "backup", "main" ] def run_backup(self): pass class Backup2(Task): DEPENDS = [Backup1] STAGES = [ "backup", "main" ] def run_backup(self): pass class LoadData(Task): NAME = "data" STAGES = [ "main", "stats" ] def run_main(self): pass def run_stats(self): pass class Consistency(Task): DEPENDS = [LoadData] STAGES = [ "main", "stats" ] def run_main(self): pass def run_stats(self): pass h = Housekeeping() h.register_task(Backup2) h.register_task(Consistency) h.register_task(Backup1) h.register_task(LoadData) h.init() order = [(stage.name, task.IDENTIFIER) for stage, task in h.get_schedule()] self.assertEqual(order, [ ('backup', 'django_housekeeping.tests.Backup1'), ('backup', 'django_housekeeping.tests.Backup2'), ('main', 'django_housekeeping.tests.LoadData'), ('main', 'django_housekeeping.tests.Consistency'), ('stats', 'django_housekeeping.tests.LoadData'), ('stats', 'django_housekeeping.tests.Consistency'), ]) def test_stage_without_tasks(self): class Backup(Task): STAGES = [ "backup", "main" ] def run_backup(self): pass h = Housekeeping() h.register_task(Backup) h.init() order = [(stage.name, task.IDENTIFIER) for stage, task in h.get_schedule()] self.assertEqual(order, [ (u'backup', u'django_housekeeping.tests.Backup'), ]) class TestDependencies(unittest.TestCase): def test_skipstage(self): class Associator(Task): run_count = 0 call_history = [] NAME = "associate" STAGES = ["main", "stats"] def run_stats(self, stage): Associator.run_count += 1 def __call__(self, name): self.call_history.append(name) class AssociateFoo(Task): DEPENDS = [Associator] def run_main(self, stage): self.hk.associate("foo") h = Housekeeping() h.register_task(Associator) h.register_task(AssociateFoo) h.init() h.run() self.assertEqual(Associator.run_count, 1) self.assertEqual(Associator.call_history, ["foo"]) class TestReport(unittest.TestCase): def setUp(self): import tempfile self.root = tempfile.mkdtemp() def tearDown(self): import shutil shutil.rmtree(self.root) def test_report(self): class TestTask(Task): STAGES = ["main", "stats"] def run_main(self, stage): pass def run_stats(self, stage): pass h = Housekeeping(outdir=self.root) h.register_task(TestTask) h.init() h.run() self.assertTrue(os.path.isfile(os.path.join(h.outdir.outdir, "report/tasks.dot"))) self.assertTrue(os.path.isfile(os.path.join(h.outdir.outdir, "report/stages.dot"))) self.assertTrue(os.path.isfile(os.path.join(h.outdir.outdir, "report/stage-main.dot"))) self.assertTrue(os.path.isfile(os.path.join(h.outdir.outdir, "report/stage-stats.dot"))) django-housekeeping-1.0/django_housekeeping/toposort.py000066400000000000000000000100531233634770700235660ustar00rootroot00000000000000# coding: utf8 # Pluggable housekeeping framework for Django sites # # Copyright (C) 2014 Enrico Zini # Based on code by Paul Harrison and Dries Verdegem released under the Public # Domain. # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 3.0 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library. from __future__ import print_function from __future__ import absolute_import from __future__ import division from __future__ import unicode_literals import sys if sys.version_info[0] >= 3: # Python 3 global unicode unicode = str # From: http://www.logarithmic.net/pfh/blog/01208083168 # and: http://www.logarithmic.net/pfh-files/blog/01208083168/tarjan.py def strongly_connected_components(graph): """ Tarjan's Algorithm (named for its discoverer, Robert Tarjan) is a graph theory algorithm for finding the strongly connected components of a graph. Based on: http://en.wikipedia.org/wiki/Tarjan%27s_strongly_connected_components_algorithm """ index_counter = [0] stack = [] lowlinks = {} index = {} result = [] def strongconnect(node): # set the depth index for this node to the smallest unused index index[node] = index_counter[0] lowlinks[node] = index_counter[0] index_counter[0] += 1 stack.append(node) # Consider successors of `node` successors = graph.get(node, ()) for successor in successors: if successor not in lowlinks: # Successor has not yet been visited; recurse on it strongconnect(successor) lowlinks[node] = min(lowlinks[node], lowlinks[successor]) elif successor in stack: # the successor is in the stack and hence in the current strongly connected component (SCC) lowlinks[node] = min(lowlinks[node], index[successor]) # If `node` is a root node, pop the stack and generate an SCC if lowlinks[node] == index[node]: connected_component = [] while True: successor = stack.pop() connected_component.append(successor) if successor == node: break # storing the result result.append(connected_component) for node in graph: if node not in lowlinks: strongconnect(node) return result def topological_sort(graph): count = {} for node in graph: count[node] = 0 for node in graph: for successor in graph[node]: count[successor] += 1 ready = [node for node in graph if count[node] == 0] result = [] while ready: node = ready.pop(-1) result.append(node) for successor in graph[node]: count[successor] -= 1 if count[successor] == 0: ready.append(successor) return result def sort(graph): """ Linearize a dependency graph, throwing an exception if a cycle is detected """ # Compute the strongly connected components, throwing an exception if we # see cycles cycles = [] for items in strongly_connected_components(graph): if len(items) > 1: cycles.append("({})".format(", ".join(unicode(x) for x in items))) if cycles: if len(cycles) > 1: raise ValueError("{} cycles detected: {}".format(len(cycles), ", ".join(cycles))) else: raise ValueError("cycle detected: {}".format(cycles[0])) # We know that the graph does not have cycles, so we can run # topological_sort on it return topological_sort(graph) django-housekeeping-1.0/setup.py000066400000000000000000000024431233634770700170310ustar00rootroot00000000000000#!/usr/bin/env/python # coding: utf8 """ Copyright (C) 2013--2014 Enrico Zini This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3.0 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library. """ from __future__ import print_function from __future__ import absolute_import from __future__ import division from distutils.core import setup setup( name = "django_housekeeping", version = "1.0", description = "Pluggable housekeeping framework for Django sites", author = ["Enrico Zini"], author_email = ["enrico@enricozini.org"], url = "https://github.com/spanezz/django-housekeeping", license = "https://www.gnu.org/licenses/lgpl.html", packages = ["django_housekeeping", "django_housekeeping.management", "django_housekeeping.management.commands"] )