openstack/deb-python-taskflow
Code Issues Proposed changes

Merge "Fix entrypoints being updated/created by update.py"

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Jenkins
2013-10-07 22:19:44 +00:00
committed by Gerrit Code Review
parent 98d40324d3 9417307d09
commit 8750840ac8
1 changed files with 278 additions and 61 deletions
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335
update.py
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@@ -62,13 +62,21 @@ Obviously, the first way is the easiest!
from __future__ import print_function
import ConfigParser
import collections
import functools
import logging
import os
import os.path
import re
import shutil
import sys
import textwrap
import six
LOG = logging.getLogger(__name__)
from oslo.config import cfg
@@ -87,21 +95,96 @@ OPTS = [
default=None,
help='A config file or destination project directory',
positional=True),
cfg.BoolOpt('verbose', default=False,
short='v',
help='Verbosely show what this program is doing'),
]
ALLOWED_PRIMITIVES = (
'flow',
'task',
'decorators',
'storage',
'engines',
'exceptions',
'flow',
'persistence',
'storage',
'task',
)
IMPORT_FROM = re.compile(r"^\s*from\s+" + BASE_MOD + r"\s*(.*)$")
BASE_CONF = '%s.conf' % (BASE_MOD)
MACHINE_GENERATED = ('# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE '
'OVERWRITTEN', '')
BLACK_LISTED = ()
ENTRY_FOOTER = [
'',
"Please make sure you have these installed.",
'',
]
ENTRY_WARN = """
Please install stevedore [https://pypi.python.org/pypi/stevedore] to make
sure that entrypoints can be loaded successfully. A setup.cfg file which is
required for discovery of these entrypoints was %(updated_or_created)s at
'%(location)s' which requires either pbr [https://pypi.python.org/pypi/pbr/]
or distutils2 (which is provided by default in python 3.3+)
[https://pypi.python.org/pypi/Distutils2].
"""
# These module names require entrypoint adjustments to work correctly in the
# target projects namespace (they also require stevedore and a setup.cfg file
# that includes references to there module location).
REQUIRES_ENTRYPOINTS = {
'engines.helpers': {
'target_mod': 'engines.helpers',
'replace': 'ENGINES_NAMESPACE',
'replacement': '%s.taskflow.engines',
'entrypoint': 'taskflow.engines',
},
'persistence.backends': {
'target_mod': 'persistence.backends',
'replace': 'BACKEND_NAMESPACE',
'replacement': '%s.taskflow.persistence',
'entrypoint': 'taskflow.persistence',
},
}
REQUIRES_ENTRYPOINTS['engines'] = REQUIRES_ENTRYPOINTS['engines.helpers']
def _warn_entrypoint(cfg_file, there_existed):
base_dir = os.path.basename(os.path.dirname(cfg_file))
cfg_file = os.path.join(base_dir, os.path.basename(cfg_file))
replacements = {
'location': cfg_file,
}
if there_existed:
replacements['updated_or_created'] = 'updated'
else:
replacements['updated_or_created'] = 'created'
text = ENTRY_WARN.strip()
text = text % replacements
lines = ['']
lines.extend(textwrap.wrap(text, width=79))
lines.extend(ENTRY_FOOTER)
for line in lines:
LOG.warn(line)
def _configure_logging(cfg):
if cfg.verbose:
level = logging.DEBUG
else:
level = logging.INFO
logging.basicConfig(level=level, format='%(levelname)s: %(message)s')
def _take_entrypoint_line(line, mod_list):
line = line.strip()
if not line or line.find("=") == -1 or line.startswith("#"):
return True
_name, module = line.split("=", 1)
base_module = module.split(":")[0].strip()
if base_module.startswith("%s." % (BASE_MOD)):
base_module = _join_mod(*base_module.split(".")[1:])
if not base_module:
return False
return _is_prefix_of(base_module, mod_list)
def _parse_args(argv):
@@ -168,13 +251,13 @@ def _make_dirs(path):
if not os.path.isdir(d):
dirs_needed.append(d)
if dirs_needed:
print("Creating directories for '%s'" % (dir_name))
LOG.debug("Creating directories for '%s'", dir_name)
for d in dirs_needed:
print(" '%s'" % (d))
LOG.debug(" '%s'", d)
os.mkdir(d)
init_path = os.path.join(d, '__init__.py')
if not os.path.exists(init_path):
print(" '%s'" % (init_path))
LOG.debug(" '%s'", init_path)
_drop_init(init_path)
@@ -200,8 +283,8 @@ def _copy_file(path, dest, base, root_mods=None, common_already=None):
def _copy_it():
_make_dirs(dest)
print("Copying '%s'" % (path))
print(" '%s' -> '%s'" % (path, dest))
LOG.debug("Copying '%s'", path)
LOG.debug(" '%s' -> '%s'", path, dest)
shutil.copy2(path, dest)
def _form_mod(prefix, postfix):
@@ -235,14 +318,14 @@ def _copy_file(path, dest, base, root_mods=None, common_already=None):
line = "%s\n" % _reform_import(_form_mod(prefix, postfix),
postfix, alias, comment)
if original_line != line:
print(" '%s' -> '%s'; line %s"
% (original_line.strip(), line.strip(), i + 1))
LOG.debug(" '%s' -> '%s'; line %s",
original_line.strip(), line.strip(), i + 1)
f.write(line)
# Only bother making it if we already didn't make it...
if not os.path.exists(dest):
_copy_it()
print("Fixing up '%s'" % (dest))
LOG.debug("Fixing up '%s'", dest)
_import_replace(dest)
_bulk_replace(dest,
'possible_topdir, "%s",$' % (BASE_MOD),
@@ -285,12 +368,14 @@ def _copy_mod(mod, base, dest_dir, common_already=None, root_mods=None):
copy_pyfile(root_mods[mod])
exists, mod_file = _get_mod_path([mod], base=BASE_MOD)
if exists:
print("Creating module '%s'" % (_join_mod(base, BASE_MOD, mod)))
LOG.debug("Creating module '%s'", _join_mod(base, BASE_MOD, mod))
copy_pyfile(mod_file)
return mod_file
else:
if not root_existed:
raise IOError("Can not find module: %s" % (_join_mod(BASE_MOD,
mod)))
return root_mods[mod]
def _parse_import_line(line, linenum=-1, filename=None):
@@ -396,6 +481,7 @@ def _build_dependency_tree():
mod_name = _join_mod(*segments)
root_mods[mod_name] = os.path.join(dirpath, filename)
filepath = os.path.join(dirpath, filename)
if mod_name:
file_paths.append((filepath, mod_name))
# Analyze the individual files dependencies after we know exactly what the
# modules are so that we can find those modules if a individual file
@@ -415,13 +501,16 @@ def _dfs_dependency_tree(dep_tree, mod_name, mod_list=[]):
return mod_list
def _complete_engine_list(engines):
if not engines:
def _complete_engines(engine_types):
if not engine_types:
return []
engine_mods = []
for engine_type in engines:
engine_mods = [
'engines',
'engines.base',
]
for engine_type in engine_types:
engine_type = engine_type.strip()
if not engine_type:
if not engine_type or engine_type in engine_mods:
continue
engine_mods.append(_join_mod('engines', engine_type))
mod = _join_mod('engines', engine_type, 'engine')
@@ -433,23 +522,43 @@ def _complete_engine_list(engines):
return engine_mods
def _complete_flow_list(flows):
if not flows:
def _complete_flows(patterns):
if not patterns:
return []
flow_mods = []
for flow in flows:
flow = flow.strip()
if not flow:
pattern_mods = [
'patterns',
]
for p in patterns:
p = p.strip()
if not p or p in pattern_mods:
continue
mod = _join_mod('patterns', flow)
mod = _join_mod('patterns', p)
exists, mod_path = _get_mod_path([mod], base=BASE_MOD)
if not exists:
raise IOError("Flow %s file not found at: %s" % (flow, mod_path))
if flow in BLACK_LISTED:
raise IOError("Flow %s is currently disallowed until further"
" notice" % (flow))
flow_mods.append(mod)
return flow_mods
raise IOError("Flow pattern %s file not found at: %s"
% (p, mod_path))
pattern_mods.append(mod)
return pattern_mods
def _complete_persistence(backends):
if not backends:
return []
backend_mods = [
'persistence',
'persistence.logbook',
]
for b in backends:
b = b.strip()
if not b or b in backend_mods:
continue
mod = _join_mod("persistence", "backends", b)
exists, mod_path = _get_mod_path([mod], base=BASE_MOD)
if not exists:
raise IOError("Persistence backend %s file not found at: %s"
% (b, mod_path))
backend_mods.append(mod)
return backend_mods
def _is_prefix_of(prefix_text, haystack):
@@ -485,21 +594,21 @@ def _find_existing(mod, base, dest_dir):
def _uniq_itr(itr):
seen = []
seen = set()
for i in itr:
if i in seen:
continue
seen.append(i)
seen.add(i)
yield i
def _rm_tree(base):
dirpaths = []
for dirpath, _tmp, filenames in os.walk(base):
print(" '%s' (X)" % (dirpath))
LOG.debug(" '%s' (X)", dirpath)
for filename in filenames:
filepath = os.path.join(dirpath, filename)
print(" '%s' (X)" % (filepath))
LOG.debug(" '%s' (X)", filepath)
os.unlink(filepath)
dirpaths.append(dirpath)
for d in reversed(dirpaths):
@@ -508,6 +617,8 @@ def _rm_tree(base):
def main(argv):
conf = _parse_args(argv)
script_base = os.path.abspath(os.path.dirname(__file__))
_configure_logging(conf)
dest_dir = conf.dest_dir
if not dest_dir and conf.config_file:
@@ -527,19 +638,13 @@ def main(argv):
p = ''
p_type = p_type.strip()
p = p.strip()
if not p_type:
continue
if p not in primitive_types[p_type]:
primitive_types[p_type].append(p)
# TODO(harlowja): for now these are the only primitives we are allowing to
# be copied over. Later add more as needed.
prims = 0
for k in ALLOWED_PRIMITIVES:
prims += len(primitive_types.get(k, []))
if prims <= 0:
allowed = ", ".join(sorted(ALLOWED_PRIMITIVES))
print("A list of primitives to copy is required "
"(%s is allowed)" % (allowed), file=sys.stderr)
sys.exit(1)
unknown_prims = []
for k in primitive_types.keys():
if k not in ALLOWED_PRIMITIVES:
@@ -555,10 +660,15 @@ def main(argv):
print("A destination base module is required", file=sys.stderr)
sys.exit(1)
base_dir = os.path.join(dest_dir, conf.base)
def copy_mods(mod_list, root_mods):
common_already = {}
missing_common = set()
for mod in list(sorted(mod_list)):
# Take out the openstack.common modules that exist already in the
# containing project.
mod_list = list(mod_list)
for mod in list(mod_list):
# NOTE(harlowja): attempt to use the modules being copied to common
# folder as much as possible for modules that are needed for
# taskflow as this avoids duplicating openstack.common in the
@@ -570,39 +680,146 @@ def main(argv):
mod_list.remove(mod)
else:
missing_common.add(mod)
there_common_mod = _join_mod(conf.base, 'openstack', 'common')
LOG.info("Copying %s modules into '%s'", len(mod_list), base_dir)
for m in mod_list:
LOG.info(" - %s", m)
if common_already:
print("The following modules will be used from the containing"
" projects '%s'" % (there_common_mod))
LOG.info("The following modules will be used from the containing"
" projects 'openstack.common'")
for mod in sorted(common_already.keys()):
target_mod = common_already[mod]
print(" '%s' -> '%s'" % (mod, target_mod))
LOG.info(" '%s' -> '%s'", mod, target_mod)
if missing_common:
print("The following modules will *not* be used from the"
" containing projects '%s'" % (there_common_mod))
LOG.info("The following modules will *not* be used from the"
" containing projects 'openstack.common'")
for mod in sorted(missing_common):
print(" '%s'" % (mod))
for mod in _uniq_itr(sorted(mod_list)):
_copy_mod(mod, conf.base, dest_dir,
LOG.info(" - %s", mod)
copied = set()
for mod in mod_list:
copied.add(_copy_mod(mod, conf.base, dest_dir,
common_already=common_already,
root_mods=root_mods)
root_mods=root_mods))
LOG.debug("Copied %s modules", len(copied))
for m in sorted(copied):
LOG.debug(" - %s", m)
def clean_old():
old_base = os.path.join(dest_dir, conf.base, BASE_MOD)
if os.path.isdir(old_base):
print("Removing old %s tree found at '%s'" % (BASE_MOD, old_base))
LOG.info("Removing old %s tree found at '%s'", BASE_MOD, old_base)
_rm_tree(old_base)
find_what = _complete_flow_list(primitive_types.pop('flow', []))
find_what.extend(_complete_engine_list(primitive_types.get('engines', [])))
def create_entrypoints(mod_list, root_mods):
needed_entrypoints = set()
for k in REQUIRES_ENTRYPOINTS.keys():
for m in mod_list:
if m.startswith(k):
needed_entrypoints.add(k)
if not needed_entrypoints:
return
# Alter the source code locations that have the entry point name.
LOG.info("Altering %s entrypoint referencing modules:",
len(needed_entrypoints))
for m in sorted(needed_entrypoints):
LOG.info(" - %s", m)
entrypoints_adjusted = set()
for k in sorted(needed_entrypoints):
entrypoint_details = REQUIRES_ENTRYPOINTS[k]
entrypoint_target = entrypoint_details['target_mod']
there_entrypoint = (entrypoint_details['replacement'] % conf.base)
if entrypoint_target in entrypoints_adjusted:
continue
base_mod_path = root_mods.get(entrypoint_target)
if not base_mod_path:
existing_mod = _find_existing(entrypoint_target,
BASE_MOD, base_dir)
if existing_mod:
base_mod_path = _mod_to_path(existing_mod) + ".py"
if not base_mod_path:
raise IOError("Could not find entrypoint target %s" %
entrypoint_target)
dest_path = os.path.join(base_dir, base_mod_path)
if not os.path.isfile(dest_path):
raise IOError("Could not find entrypoint file %s" %
dest_path)
LOG.debug("Adjusting '%s' in '%s'", entrypoint_details['replace'],
dest_path)
pattern = r"%s\s*=.*" % (entrypoint_details['replace'])
replacement = entrypoint_details['replace']
replacement += " = '%s'" % (there_entrypoint)
LOG.debug("Replacing '%s' -> '%s'", pattern, replacement)
_bulk_replace(dest_path, pattern, replacement)
entrypoints_adjusted.add(entrypoint_target)
if not entrypoints_adjusted:
return
# Adjust there entrypoint configuration file (if it exists).
cfg_filename = os.path.join(dest_dir, "setup.cfg")
my_cfg_filename = os.path.join(script_base, 'setup.cfg')
LOG.debug("Adjusting entrypoint configuration in '%s' with entrypoints"
" from '%s'", cfg_filename, my_cfg_filename)
# Clear out there old entry points for taskflow
there_cfg = ConfigParser.RawConfigParser()
there_cfg.read([cfg_filename])
there_exists = os.path.isfile(cfg_filename)
for k in entrypoints_adjusted:
entrypoint_details = REQUIRES_ENTRYPOINTS[k]
entrypoint = entrypoint_details['entrypoint']
there_entrypoint = (entrypoint_details['replacement'] % conf.base)
try:
there_cfg.remove_option('entry_points', there_entrypoint)
except (ConfigParser.NoSectionError, ConfigParser.NoOptionError):
pass
# Copy and modify my entry points into there entrypoints.
my_cfg = ConfigParser.RawConfigParser()
my_cfg.read([my_cfg_filename])
for k in sorted(entrypoints_adjusted):
entrypoint_details = REQUIRES_ENTRYPOINTS[k]
entrypoint = entrypoint_details['entrypoint']
there_entrypoint = (entrypoint_details['replacement'] % conf.base)
my_entries = my_cfg.get('entry_points', entrypoint)
there_entries = []
for line in my_entries.splitlines():
# NOTE(harlowja): only take the entrypoints that are relevant
# for the desired module list, skip the ones that are not.
if _take_entrypoint_line(line, mod_list):
new_line = re.sub(entrypoint, there_entrypoint, line)
there_entries.append(new_line)
try:
there_cfg.add_section('entry_points')
except ConfigParser.DuplicateSectionError:
pass
entry_value = os.linesep.join(there_entries)
there_cfg.set('entry_points', there_entrypoint, entry_value)
LOG.debug("Added entrypoint '%s'", there_entrypoint)
for line in there_entries:
line = line.strip()
if line:
LOG.debug(">> %s", line)
# ConfigParser seems to use tabs, instead of spaces, why!
buf = six.StringIO()
there_cfg.write(buf)
contents = buf.getvalue()
if contents.find("\t") != -1:
contents = contents.replace("\t", " " * 4)
if contents.find(" \n") != -1:
contents = contents.replace(' \n', '\n')
with open(cfg_filename, "wb") as fh:
fh.write(contents)
_warn_entrypoint(cfg_filename, there_exists)
find_what = _complete_flows(primitive_types.pop('flow', []))
find_what.extend(_complete_engines(primitive_types.get('engines')))
find_what.extend(_complete_persistence(primitive_types.get('persistence')))
find_what.extend(primitive_types.keys())
find_what = [f for f in _uniq_itr(find_what)]
copy_what, root_mods = _complete_module_list(find_what)
copy_what = sorted([m for m in _uniq_itr(copy_what)])
if copy_what:
clean_old()
copy_mods([m for m in _uniq_itr(copy_what)], root_mods)
copy_mods(copy_what, root_mods)
create_entrypoints(copy_what, root_mods)
else:
print("Nothing to copy.")
print("Nothing to copy.", file=sys.stderr)
if __name__ == "__main__":