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httppeer: implement command executor for version 2 peer...
httppeer: implement command executor for version 2 peer Now that we have a new API for issuing commands which is compatible with wire protocol version 2, we can start using it with wire protocol version 2. This commit replaces our hacky implementation of _call() with something a bit more robust based on the new command executor interface. We now have proper support for issuing multiple commands per HTTP request. Each HTTP request maintains its own client reactor. The implementation is similar to the one in the legacy wire protocol. We use a ThreadPoolExecutor for spinning up a thread to read the HTTP response in the background. This allows responses to resolve in any order. While not implemented on the server yet, a client could use concurrent.futures.as_completed() with a collection of futures and handle responses as they arrive from the server. The return value from issued commands is still a simple list of raw or decoded CBOR data. This is still super hacky. We will want a rich data type for representing command responses. But at least this commit gets us one step closer to a proper peer implementation. Differential Revision: https://phab.mercurial-scm.org/D3297
Yuya Nishihara - - Load All Authors

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test-propertycache.py
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/ tests / test-propertycache.py
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"""test behavior of propertycache and unfiltered propertycache
The repoview overlay is quite complex. We test the behavior of
property cache of both localrepo and repoview to prevent
regression."""
from __future__ import absolute_import, print_function
import os
import subprocess
from mercurial import (
hg,
localrepo,
ui as uimod,
util,
)
# create some special property cache that trace they call
calllog = []
@util.propertycache
def testcachedfoobar(repo):
name = repo.filtername
if name is None:
name = ''
val = len(name)
calllog.append(val)
return val
unficalllog = []
@localrepo.unfilteredpropertycache
def testcachedunfifoobar(repo):
name = repo.filtername
if name is None:
name = ''
val = 100 + len(name)
unficalllog.append(val)
return val
#plug them on repo
localrepo.localrepository.testcachedfoobar = testcachedfoobar
localrepo.localrepository.testcachedunfifoobar = testcachedunfifoobar
# Create an empty repo and instantiate it. It is important to run
# these tests on the real object to detect regression.
repopath = os.path.join(os.environ['TESTTMP'], 'repo')
assert subprocess.call(['hg', 'init', repopath]) == 0
ui = uimod.ui.load()
repo = hg.repository(ui, path=repopath).unfiltered()
print('')
print('=== property cache ===')
print('')
print('calllog:', calllog)
print('cached value (unfiltered):',
vars(repo).get('testcachedfoobar', 'NOCACHE'))
print('')
print('= first access on unfiltered, should do a call')
print('access:', repo.testcachedfoobar)
print('calllog:', calllog)
print('cached value (unfiltered):',
vars(repo).get('testcachedfoobar', 'NOCACHE'))
print('')
print('= second access on unfiltered, should not do call')
print('access', repo.testcachedfoobar)
print('calllog:', calllog)
print('cached value (unfiltered):',
vars(repo).get('testcachedfoobar', 'NOCACHE'))
print('')
print('= first access on "visible" view, should do a call')
visibleview = repo.filtered('visible')
print('cached value ("visible" view):',
vars(visibleview).get('testcachedfoobar', 'NOCACHE'))
print('access:', visibleview.testcachedfoobar)
print('calllog:', calllog)
print('cached value (unfiltered):',
vars(repo).get('testcachedfoobar', 'NOCACHE'))
print('cached value ("visible" view):',
vars(visibleview).get('testcachedfoobar', 'NOCACHE'))
print('')
print('= second access on "visible view", should not do call')
print('access:', visibleview.testcachedfoobar)
print('calllog:', calllog)
print('cached value (unfiltered):',
vars(repo).get('testcachedfoobar', 'NOCACHE'))
print('cached value ("visible" view):',
vars(visibleview).get('testcachedfoobar', 'NOCACHE'))
print('')
print('= no effect on other view')
immutableview = repo.filtered('immutable')
print('cached value ("immutable" view):',
vars(immutableview).get('testcachedfoobar', 'NOCACHE'))
print('access:', immutableview.testcachedfoobar)
print('calllog:', calllog)
print('cached value (unfiltered):',
vars(repo).get('testcachedfoobar', 'NOCACHE'))
print('cached value ("visible" view):',
vars(visibleview).get('testcachedfoobar', 'NOCACHE'))
print('cached value ("immutable" view):',
vars(immutableview).get('testcachedfoobar', 'NOCACHE'))
# unfiltered property cache test
print('')
print('')
print('=== unfiltered property cache ===')
print('')
print('unficalllog:', unficalllog)
print('cached value (unfiltered): ',
vars(repo).get('testcachedunfifoobar', 'NOCACHE'))
print('cached value ("visible" view): ',
vars(visibleview).get('testcachedunfifoobar', 'NOCACHE'))
print('cached value ("immutable" view):',
vars(immutableview).get('testcachedunfifoobar', 'NOCACHE'))
print('')
print('= first access on unfiltered, should do a call')
print('access (unfiltered):', repo.testcachedunfifoobar)
print('unficalllog:', unficalllog)
print('cached value (unfiltered): ',
vars(repo).get('testcachedunfifoobar', 'NOCACHE'))
print('')
print('= second access on unfiltered, should not do call')
print('access (unfiltered):', repo.testcachedunfifoobar)
print('unficalllog:', unficalllog)
print('cached value (unfiltered): ',
vars(repo).get('testcachedunfifoobar', 'NOCACHE'))
print('')
print('= access on view should use the unfiltered cache')
print('access (unfiltered): ', repo.testcachedunfifoobar)
print('access ("visible" view): ', visibleview.testcachedunfifoobar)
print('access ("immutable" view):', immutableview.testcachedunfifoobar)
print('unficalllog:', unficalllog)
print('cached value (unfiltered): ',
vars(repo).get('testcachedunfifoobar', 'NOCACHE'))
print('cached value ("visible" view): ',
vars(visibleview).get('testcachedunfifoobar', 'NOCACHE'))
print('cached value ("immutable" view):',
vars(immutableview).get('testcachedunfifoobar', 'NOCACHE'))
print('')
print('= even if we clear the unfiltered cache')
del repo.__dict__['testcachedunfifoobar']
print('cached value (unfiltered): ',
vars(repo).get('testcachedunfifoobar', 'NOCACHE'))
print('cached value ("visible" view): ',
vars(visibleview).get('testcachedunfifoobar', 'NOCACHE'))
print('cached value ("immutable" view):',
vars(immutableview).get('testcachedunfifoobar', 'NOCACHE'))
print('unficalllog:', unficalllog)
print('access ("visible" view): ', visibleview.testcachedunfifoobar)
print('unficalllog:', unficalllog)
print('cached value (unfiltered): ',
vars(repo).get('testcachedunfifoobar', 'NOCACHE'))
print('cached value ("visible" view): ',
vars(visibleview).get('testcachedunfifoobar', 'NOCACHE'))
print('cached value ("immutable" view):',
vars(immutableview).get('testcachedunfifoobar', 'NOCACHE'))
print('access ("immutable" view):', immutableview.testcachedunfifoobar)
print('unficalllog:', unficalllog)
print('cached value (unfiltered): ',
vars(repo).get('testcachedunfifoobar', 'NOCACHE'))
print('cached value ("visible" view): ',
vars(visibleview).get('testcachedunfifoobar', 'NOCACHE'))
print('cached value ("immutable" view):',
vars(immutableview).get('testcachedunfifoobar', 'NOCACHE'))
print('access (unfiltered): ', repo.testcachedunfifoobar)
print('unficalllog:', unficalllog)
print('cached value (unfiltered): ',
vars(repo).get('testcachedunfifoobar', 'NOCACHE'))
print('cached value ("visible" view): ',
vars(visibleview).get('testcachedunfifoobar', 'NOCACHE'))
print('cached value ("immutable" view):',
vars(immutableview).get('testcachedunfifoobar', 'NOCACHE'))