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#!/usr/bin/env python
#
# Copyright (C) 2013 Google Inc.
#
# This file is part of YouCompleteMe.
#
# YouCompleteMe 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.
#
# YouCompleteMe 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 YouCompleteMe. If not, see <http://www.gnu.org/licenses/>.
import vim
import json
import requests
import urlparse
from retries import retries
from requests_futures.sessions import FuturesSession
from ycm.unsafe_thread_pool_executor import UnsafeThreadPoolExecutor
from ycm import vimsupport
from ycm.server.responses import ServerError, UnknownExtraConf
HEADERS = {'content-type': 'application/json'}
EXECUTOR = UnsafeThreadPoolExecutor( max_workers = 30 )
# Setting this to None seems to screw up the Requests/urllib3 libs.
DEFAULT_TIMEOUT_SEC = 30
class BaseRequest( object ):
def __init__( self ):
pass
def Start( self ):
pass
def Done( self ):
return True
def Response( self ):
return {}
# This method blocks
# |timeout| is num seconds to tolerate no response from server before giving
# up; see Requests docs for details (we just pass the param along).
@staticmethod
def GetDataFromHandler( handler, timeout = DEFAULT_TIMEOUT_SEC ):
return JsonFromFuture( BaseRequest._TalkToHandlerAsync( '',
handler,
'GET',
timeout ) )
# This is the blocking version of the method. See below for async.
# |timeout| is num seconds to tolerate no response from server before giving
# up; see Requests docs for details (we just pass the param along).
@staticmethod
def PostDataToHandler( data, handler, timeout = DEFAULT_TIMEOUT_SEC ):
return JsonFromFuture( BaseRequest.PostDataToHandlerAsync( data,
handler,
timeout ) )
# This returns a future! Use JsonFromFuture to get the value.
# |timeout| is num seconds to tolerate no response from server before giving
# up; see Requests docs for details (we just pass the param along).
@staticmethod
def PostDataToHandlerAsync( data, handler, timeout = DEFAULT_TIMEOUT_SEC ):
return BaseRequest._TalkToHandlerAsync( data, handler, 'POST', timeout )
# This returns a future! Use JsonFromFuture to get the value.
# |method| is either 'POST' or 'GET'.
# |timeout| is num seconds to tolerate no response from server before giving
# up; see Requests docs for details (we just pass the param along).
@staticmethod
def _TalkToHandlerAsync( data,
handler,
method,
timeout = DEFAULT_TIMEOUT_SEC ):
def SendRequest( data, handler, method, timeout ):
if method == 'POST':
return BaseRequest.session.post( _BuildUri( handler ),
data = json.dumps( data ),
headers = HEADERS,
timeout = timeout )
if method == 'GET':
return BaseRequest.session.get( _BuildUri( handler ),
headers = HEADERS,
timeout = timeout )
@retries( 5, delay = 0.5, backoff = 1.5 )
def DelayedSendRequest( data, handler, method ):
if method == 'POST':
return requests.post( _BuildUri( handler ),
data = json.dumps( data ),
headers = HEADERS )
if method == 'GET':
return requests.get( _BuildUri( handler ),
headers = HEADERS )
if not _CheckServerIsHealthyWithCache():
return EXECUTOR.submit( DelayedSendRequest, data, handler, method )
return SendRequest( data, handler, method, timeout )
session = FuturesSession( executor = EXECUTOR )
server_location = 'http://localhost:6666'
def BuildRequestData( start_column = None,
query = None,
include_buffer_data = True ):
line, column = vimsupport.CurrentLineAndColumn()
filepath = vimsupport.GetCurrentBufferFilepath()
request_data = {
'filetypes': vimsupport.CurrentFiletypes(),
'line_num': line,
'column_num': column,
'start_column': start_column,
'line_value': vim.current.line,
'filepath': filepath
}
if include_buffer_data:
request_data[ 'file_data' ] = vimsupport.GetUnsavedAndCurrentBufferData()
if query:
request_data[ 'query' ] = query
return request_data
def JsonFromFuture( future ):
response = future.result()
if response.status_code == requests.codes.server_error:
_RaiseExceptionForData( response.json() )
# We let Requests handle the other status types, we only handle the 500
# error code.
response.raise_for_status()
if response.text:
return response.json()
return None
def _BuildUri( handler ):
return urlparse.urljoin( BaseRequest.server_location, handler )
SERVER_HEALTHY = False
def _CheckServerIsHealthyWithCache():
global SERVER_HEALTHY
def _ServerIsHealthy():
response = requests.get( _BuildUri( 'healthy' ) )
response.raise_for_status()
return response.json()
if SERVER_HEALTHY:
return True
try:
SERVER_HEALTHY = _ServerIsHealthy()
return SERVER_HEALTHY
except:
return False
def _RaiseExceptionForData( data ):
if data[ 'exception' ][ 'TYPE' ] == UnknownExtraConf.__name__:
raise UnknownExtraConf( data[ 'exception' ][ 'extra_conf_file' ] )
raise ServerError( '{0}: {1}'.format( data[ 'exception' ][ 'TYPE' ],
data[ 'message' ] ) )
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