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wireprotov2: implement commands as a generator of objects...
wireprotov2: implement commands as a generator of objects Previously, wire protocol version 2 inherited version 1's model of having separate types to represent the results of different wire protocol commands. As I implemented more powerful commands in future commits, I found I was using a common pattern of returning a special type to hold a generator. This meant the command function required a closure to do most of the work. That made logic flow more difficult to follow. I also noticed that many commands were effectively a sequence of objects to be CBOR encoded. I think it makes sense to define version 2 commands as generators. This way, commands can simply emit the data structures they wish to send to the client. This eliminates the need for a closure in command functions and removes encoding from the bodies of commands. As part of this commit, the handling of response objects has been moved into the serverreactor class. This puts the reactor in the driver's seat with regards to CBOR encoding and error handling. Having error handling in the function that emits frames is particularly important because exceptions in that function can lead to things getting in a bad state: I'm fairly certain that uncaught exceptions in the frame generator were causing deadlocks. I also introduced a dedicated error type for explicit error reporting in command handlers. This will be used in subsequent commits. There's still a bit of work to be done here, especially around formalizing the error handling "protocol." I've added yet another TODO to track this so we don't forget. Test output changed because we're using generators and no longer know we are at the end of the data until we hit the end of the generator. This means we can't emit the end-of-stream flag until we've exhausted the generator. Hence the introduction of 0-sized end-of-stream frames. Differential Revision: https://phab.mercurial-scm.org/D4472
Yuya Nishihara - - Load All Authors

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test-ui-config.py
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/ tests / test-ui-config.py
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from __future__ import absolute_import, print_function
from mercurial import (
dispatch,
error,
pycompat,
ui as uimod,
)
from mercurial.utils import (
stringutil,
)
testui = uimod.ui.load()
# disable the configuration registration warning
#
# the purpose of this test is to check the old behavior, not to validate the
# behavior from registered item. so we silent warning related to unregisted
# config.
testui.setconfig(b'devel', b'warn-config-unknown', False, b'test')
testui.setconfig(b'devel', b'all-warnings', False, b'test')
parsed = dispatch._parseconfig(testui, [
b'values.string=string value',
b'values.bool1=true',
b'values.bool2=false',
b'values.boolinvalid=foo',
b'values.int1=42',
b'values.int2=-42',
b'values.intinvalid=foo',
b'lists.list1=foo',
b'lists.list2=foo bar baz',
b'lists.list3=alice, bob',
b'lists.list4=foo bar baz alice, bob',
b'lists.list5=abc d"ef"g "hij def"',
b'lists.list6="hello world", "how are you?"',
b'lists.list7=Do"Not"Separate',
b'lists.list8="Do"Separate',
b'lists.list9="Do\\"NotSeparate"',
b'lists.list10=string "with extraneous" quotation mark"',
b'lists.list11=x, y',
b'lists.list12="x", "y"',
b'lists.list13=""" key = "x", "y" """',
b'lists.list14=,,,, ',
b'lists.list15=" just with starting quotation',
b'lists.list16="longer quotation" with "no ending quotation',
b'lists.list17=this is \\" "not a quotation mark"',
b'lists.list18=\n \n\nding\ndong',
b'date.epoch=0 0',
b'date.birth=2005-04-19T00:00:00',
b'date.invalid=0'
])
def pprint(obj):
return stringutil.pprint(obj).decode('ascii')
print(pprint(testui.configitems(b'values')))
print(pprint(testui.configitems(b'lists')))
print("---")
print(pprint(testui.config(b'values', b'string')))
print(pprint(testui.config(b'values', b'bool1')))
print(pprint(testui.config(b'values', b'bool2')))
print(pprint(testui.config(b'values', b'unknown')))
print("---")
try:
print(pprint(testui.configbool(b'values', b'string')))
except error.ConfigError as inst:
print(pprint(pycompat.bytestr(inst)))
print(pprint(testui.configbool(b'values', b'bool1')))
print(pprint(testui.configbool(b'values', b'bool2')))
print(pprint(testui.configbool(b'values', b'bool2', True)))
print(pprint(testui.configbool(b'values', b'unknown')))
print(pprint(testui.configbool(b'values', b'unknown', True)))
print("---")
print(pprint(testui.configint(b'values', b'int1')))
print(pprint(testui.configint(b'values', b'int2')))
print("---")
print(pprint(testui.configlist(b'lists', b'list1')))
print(pprint(testui.configlist(b'lists', b'list2')))
print(pprint(testui.configlist(b'lists', b'list3')))
print(pprint(testui.configlist(b'lists', b'list4')))
print(pprint(testui.configlist(b'lists', b'list4', [b'foo'])))
print(pprint(testui.configlist(b'lists', b'list5')))
print(pprint(testui.configlist(b'lists', b'list6')))
print(pprint(testui.configlist(b'lists', b'list7')))
print(pprint(testui.configlist(b'lists', b'list8')))
print(pprint(testui.configlist(b'lists', b'list9')))
print(pprint(testui.configlist(b'lists', b'list10')))
print(pprint(testui.configlist(b'lists', b'list11')))
print(pprint(testui.configlist(b'lists', b'list12')))
print(pprint(testui.configlist(b'lists', b'list13')))
print(pprint(testui.configlist(b'lists', b'list14')))
print(pprint(testui.configlist(b'lists', b'list15')))
print(pprint(testui.configlist(b'lists', b'list16')))
print(pprint(testui.configlist(b'lists', b'list17')))
print(pprint(testui.configlist(b'lists', b'list18')))
print(pprint(testui.configlist(b'lists', b'unknown')))
print(pprint(testui.configlist(b'lists', b'unknown', b'')))
print(pprint(testui.configlist(b'lists', b'unknown', b'foo')))
print(pprint(testui.configlist(b'lists', b'unknown', [b'foo'])))
print(pprint(testui.configlist(b'lists', b'unknown', b'foo bar')))
print(pprint(testui.configlist(b'lists', b'unknown', b'foo, bar')))
print(pprint(testui.configlist(b'lists', b'unknown', [b'foo bar'])))
print(pprint(testui.configlist(b'lists', b'unknown', [b'foo', b'bar'])))
print("---")
print(pprint(testui.configdate(b'date', b'epoch')))
print(pprint(testui.configdate(b'date', b'birth')))
print(pprint(testui.config(b'values', b'String')))
def function():
pass
# values that aren't strings should work
testui.setconfig(b'hook', b'commit', function)
print(function == testui.config(b'hook', b'commit'))
# invalid values
try:
testui.configbool(b'values', b'boolinvalid')
except error.ConfigError:
print('boolinvalid')
try:
testui.configint(b'values', b'intinvalid')
except error.ConfigError:
print('intinvalid')
try:
testui.configdate(b'date', b'invalid')
except error.ConfigError:
print('dateinvalid')