root / lib / rpc.py @ fe4f6dca
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#
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# Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Google Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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"""Inter-node RPC library.
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"""
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# pylint: disable=C0103,R0201,R0904
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# C0103: Invalid name, since call_ are not valid
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# R0201: Method could be a function, we keep all rpcs instance methods
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# as not to change them back and forth between static/instance methods
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# if they need to start using instance attributes
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# R0904: Too many public methods
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import logging |
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import zlib |
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import base64 |
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import pycurl |
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import threading |
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from ganeti import utils |
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from ganeti import objects |
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from ganeti import http |
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from ganeti import serializer |
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from ganeti import constants |
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from ganeti import errors |
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from ganeti import netutils |
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from ganeti import ssconf |
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from ganeti import runtime |
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from ganeti import compat |
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from ganeti import rpc_defs |
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from ganeti import pathutils |
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from ganeti import vcluster |
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# Special module generated at build time
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from ganeti import _generated_rpc |
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# pylint has a bug here, doesn't see this import
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import ganeti.http.client # pylint: disable=W0611 |
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_RPC_CLIENT_HEADERS = [ |
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"Content-type: %s" % http.HTTP_APP_JSON,
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"Expect:",
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] |
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#: Special value to describe an offline host
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_OFFLINE = object()
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def Init(): |
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"""Initializes the module-global HTTP client manager.
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Must be called before using any RPC function and while exactly one thread is
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running.
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"""
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# curl_global_init(3) and curl_global_cleanup(3) must be called with only
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# one thread running. This check is just a safety measure -- it doesn't
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# cover all cases.
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assert threading.activeCount() == 1, \ |
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"Found more than one active thread when initializing pycURL"
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logging.info("Using PycURL %s", pycurl.version)
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pycurl.global_init(pycurl.GLOBAL_ALL) |
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def Shutdown(): |
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"""Stops the module-global HTTP client manager.
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Must be called before quitting the program and while exactly one thread is
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running.
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"""
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pycurl.global_cleanup() |
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def _ConfigRpcCurl(curl): |
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noded_cert = str(pathutils.NODED_CERT_FILE)
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curl.setopt(pycurl.FOLLOWLOCATION, False)
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curl.setopt(pycurl.CAINFO, noded_cert) |
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curl.setopt(pycurl.SSL_VERIFYHOST, 0)
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curl.setopt(pycurl.SSL_VERIFYPEER, True)
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curl.setopt(pycurl.SSLCERTTYPE, "PEM")
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curl.setopt(pycurl.SSLCERT, noded_cert) |
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curl.setopt(pycurl.SSLKEYTYPE, "PEM")
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curl.setopt(pycurl.SSLKEY, noded_cert) |
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curl.setopt(pycurl.CONNECTTIMEOUT, constants.RPC_CONNECT_TIMEOUT) |
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def RunWithRPC(fn): |
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"""RPC-wrapper decorator.
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When applied to a function, it runs it with the RPC system
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initialized, and it shutsdown the system afterwards. This means the
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function must be called without RPC being initialized.
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"""
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def wrapper(*args, **kwargs): |
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Init() |
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try:
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return fn(*args, **kwargs)
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finally:
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Shutdown() |
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return wrapper
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def _Compress(data): |
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"""Compresses a string for transport over RPC.
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Small amounts of data are not compressed.
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@type data: str
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@param data: Data
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@rtype: tuple
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@return: Encoded data to send
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"""
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# Small amounts of data are not compressed
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if len(data) < 512: |
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return (constants.RPC_ENCODING_NONE, data)
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# Compress with zlib and encode in base64
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return (constants.RPC_ENCODING_ZLIB_BASE64,
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base64.b64encode(zlib.compress(data, 3)))
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class RpcResult(object): |
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"""RPC Result class.
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This class holds an RPC result. It is needed since in multi-node
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calls we can't raise an exception just because one one out of many
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failed, and therefore we use this class to encapsulate the result.
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@ivar data: the data payload, for successful results, or None
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@ivar call: the name of the RPC call
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@ivar node: the name of the node to which we made the call
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@ivar offline: whether the operation failed because the node was
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offline, as opposed to actual failure; offline=True will always
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imply failed=True, in order to allow simpler checking if
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the user doesn't care about the exact failure mode
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@ivar fail_msg: the error message if the call failed
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"""
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def __init__(self, data=None, failed=False, offline=False, |
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call=None, node=None): |
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self.offline = offline
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self.call = call
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self.node = node
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if offline:
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self.fail_msg = "Node is marked offline" |
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self.data = self.payload = None |
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elif failed:
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self.fail_msg = self._EnsureErr(data) |
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self.data = self.payload = None |
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else:
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self.data = data
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if not isinstance(self.data, (tuple, list)): |
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self.fail_msg = ("RPC layer error: invalid result type (%s)" % |
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type(self.data)) |
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self.payload = None |
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elif len(data) != 2: |
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self.fail_msg = ("RPC layer error: invalid result length (%d), " |
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"expected 2" % len(self.data)) |
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self.payload = None |
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elif not self.data[0]: |
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self.fail_msg = self._EnsureErr(self.data[1]) |
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self.payload = None |
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else:
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# finally success
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self.fail_msg = None |
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self.payload = data[1] |
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for attr_name in ["call", "data", "fail_msg", |
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"node", "offline", "payload"]: |
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assert hasattr(self, attr_name), "Missing attribute %s" % attr_name |
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@staticmethod
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def _EnsureErr(val): |
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"""Helper to ensure we return a 'True' value for error."""
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if val:
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return val
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else:
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return "No error information" |
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def Raise(self, msg, prereq=False, ecode=None): |
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"""If the result has failed, raise an OpExecError.
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This is used so that LU code doesn't have to check for each
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result, but instead can call this function.
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"""
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if not self.fail_msg: |
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return
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if not msg: # one could pass None for default message |
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msg = ("Call '%s' to node '%s' has failed: %s" %
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(self.call, self.node, self.fail_msg)) |
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else:
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msg = "%s: %s" % (msg, self.fail_msg) |
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if prereq:
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ec = errors.OpPrereqError |
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else:
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ec = errors.OpExecError |
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if ecode is not None: |
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args = (msg, ecode) |
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else:
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args = (msg, ) |
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raise ec(*args) # pylint: disable=W0142 |
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def _SsconfResolver(ssconf_ips, node_list, _, |
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ssc=ssconf.SimpleStore, |
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nslookup_fn=netutils.Hostname.GetIP): |
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"""Return addresses for given node names.
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@type ssconf_ips: bool
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@param ssconf_ips: Use the ssconf IPs
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@type node_list: list
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@param node_list: List of node names
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@type ssc: class
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@param ssc: SimpleStore class that is used to obtain node->ip mappings
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@type nslookup_fn: callable
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@param nslookup_fn: function use to do NS lookup
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@rtype: list of tuple; (string, string)
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@return: List of tuples containing node name and IP address
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"""
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ss = ssc() |
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family = ss.GetPrimaryIPFamily() |
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if ssconf_ips:
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iplist = ss.GetNodePrimaryIPList() |
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ipmap = dict(entry.split() for entry in iplist) |
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else:
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ipmap = {} |
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result = [] |
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for node in node_list: |
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ip = ipmap.get(node) |
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if ip is None: |
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ip = nslookup_fn(node, family=family) |
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result.append((node, ip)) |
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return result
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class _StaticResolver: |
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def __init__(self, addresses): |
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"""Initializes this class.
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"""
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self._addresses = addresses
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def __call__(self, hosts, _): |
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"""Returns static addresses for hosts.
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"""
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assert len(hosts) == len(self._addresses) |
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return zip(hosts, self._addresses) |
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def _CheckConfigNode(name, node, accept_offline_node): |
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"""Checks if a node is online.
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@type name: string
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@param name: Node name
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@type node: L{objects.Node} or None
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@param node: Node object
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"""
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if node is None: |
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# Depend on DNS for name resolution
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ip = name |
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elif node.offline and not accept_offline_node: |
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ip = _OFFLINE |
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else:
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ip = node.primary_ip |
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return (name, ip)
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def _NodeConfigResolver(single_node_fn, all_nodes_fn, hosts, opts): |
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"""Calculate node addresses using configuration.
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"""
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accept_offline_node = (opts is rpc_defs.ACCEPT_OFFLINE_NODE)
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assert accept_offline_node or opts is None, "Unknown option" |
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# Special case for single-host lookups
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if len(hosts) == 1: |
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(name, ) = hosts |
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return [_CheckConfigNode(name, single_node_fn(name), accept_offline_node)]
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else:
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all_nodes = all_nodes_fn() |
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return [_CheckConfigNode(name, all_nodes.get(name, None), |
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accept_offline_node) |
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for name in hosts] |
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class _RpcProcessor: |
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def __init__(self, resolver, port, lock_monitor_cb=None): |
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"""Initializes this class.
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@param resolver: callable accepting a list of hostnames, returning a list
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of tuples containing name and IP address (IP address can be the name or
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the special value L{_OFFLINE} to mark offline machines)
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@type port: int
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@param port: TCP port
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@param lock_monitor_cb: Callable for registering with lock monitor
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"""
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self._resolver = resolver
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self._port = port
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self._lock_monitor_cb = lock_monitor_cb
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@staticmethod
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def _PrepareRequests(hosts, port, procedure, body, read_timeout): |
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"""Prepares requests by sorting offline hosts into separate list.
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@type body: dict
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@param body: a dictionary with per-host body data
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"""
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results = {} |
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requests = {} |
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assert isinstance(body, dict) |
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assert len(body) == len(hosts) |
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assert compat.all(isinstance(v, str) for v in body.values()) |
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assert frozenset(map(compat.fst, hosts)) == frozenset(body.keys()), \ |
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"%s != %s" % (hosts, body.keys())
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for (name, ip) in hosts: |
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if ip is _OFFLINE: |
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# Node is marked as offline
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results[name] = RpcResult(node=name, offline=True, call=procedure)
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else:
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requests[name] = \ |
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http.client.HttpClientRequest(str(ip), port,
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http.HTTP_POST, str("/%s" % procedure), |
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headers=_RPC_CLIENT_HEADERS, |
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post_data=body[name], |
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read_timeout=read_timeout, |
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nicename="%s/%s" % (name, procedure),
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curl_config_fn=_ConfigRpcCurl) |
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return (results, requests)
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@staticmethod
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def _CombineResults(results, requests, procedure): |
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"""Combines pre-computed results for offline hosts with actual call results.
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"""
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for name, req in requests.items(): |
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if req.success and req.resp_status_code == http.HTTP_OK: |
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host_result = RpcResult(data=serializer.LoadJson(req.resp_body), |
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node=name, call=procedure) |
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else:
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# TODO: Better error reporting
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if req.error:
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msg = req.error |
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else:
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msg = req.resp_body |
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logging.error("RPC error in %s on node %s: %s", procedure, name, msg)
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host_result = RpcResult(data=msg, failed=True, node=name,
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call=procedure) |
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results[name] = host_result |
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return results
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def __call__(self, hosts, procedure, body, read_timeout, resolver_opts, |
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_req_process_fn=None):
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"""Makes an RPC request to a number of nodes.
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@type hosts: sequence
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@param hosts: Hostnames
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@type procedure: string
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@param procedure: Request path
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@type body: dictionary
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@param body: dictionary with request bodies per host
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@type read_timeout: int or None
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@param read_timeout: Read timeout for request
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"""
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assert read_timeout is not None, \ |
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"Missing RPC read timeout for procedure '%s'" % procedure
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if _req_process_fn is None: |
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_req_process_fn = http.client.ProcessRequests |
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(results, requests) = \ |
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self._PrepareRequests(self._resolver(hosts, resolver_opts), self._port, |
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procedure, body, read_timeout) |
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_req_process_fn(requests.values(), lock_monitor_cb=self._lock_monitor_cb)
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assert not frozenset(results).intersection(requests) |
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return self._CombineResults(results, requests, procedure) |
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class _RpcClientBase: |
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def __init__(self, resolver, encoder_fn, lock_monitor_cb=None, |
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_req_process_fn=None):
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"""Initializes this class.
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"""
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proc = _RpcProcessor(resolver, |
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netutils.GetDaemonPort(constants.NODED), |
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lock_monitor_cb=lock_monitor_cb) |
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self._proc = compat.partial(proc, _req_process_fn=_req_process_fn)
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self._encoder = compat.partial(self._EncodeArg, encoder_fn) |
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@staticmethod
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def _EncodeArg(encoder_fn, (argkind, value)): |
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"""Encode argument.
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"""
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if argkind is None: |
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return value
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else:
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return encoder_fn(argkind)(value)
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def _Call(self, cdef, node_list, args): |
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"""Entry point for automatically generated RPC wrappers.
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"""
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(procedure, _, resolver_opts, timeout, argdefs, |
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prep_fn, postproc_fn, _) = cdef |
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if callable(timeout): |
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read_timeout = timeout(args) |
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else:
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read_timeout = timeout |
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if callable(resolver_opts): |
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req_resolver_opts = resolver_opts(args) |
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else:
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req_resolver_opts = resolver_opts |
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if len(args) != len(argdefs): |
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raise errors.ProgrammerError("Number of passed arguments doesn't match") |
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enc_args = map(self._encoder, zip(map(compat.snd, argdefs), args)) |
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if prep_fn is None: |
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# for a no-op prep_fn, we serialise the body once, and then we
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# reuse it in the dictionary values
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body = serializer.DumpJson(enc_args) |
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pnbody = dict((n, body) for n in node_list) |
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else:
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# for a custom prep_fn, we pass the encoded arguments and the
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# node name to the prep_fn, and we serialise its return value
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assert callable(prep_fn) |
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pnbody = dict((n, serializer.DumpJson(prep_fn(n, enc_args)))
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for n in node_list) |
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result = self._proc(node_list, procedure, pnbody, read_timeout,
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req_resolver_opts) |
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if postproc_fn:
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return dict(map(lambda (key, value): (key, postproc_fn(value)), |
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result.items())) |
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else:
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return result
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def _ObjectToDict(value): |
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"""Converts an object to a dictionary.
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@note: See L{objects}.
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"""
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return value.ToDict()
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def _ObjectListToDict(value): |
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"""Converts a list of L{objects} to dictionaries.
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"""
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return map(_ObjectToDict, value) |
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def _EncodeNodeToDiskDict(value): |
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"""Encodes a dictionary with node name as key and disk objects as values.
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"""
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return dict((name, _ObjectListToDict(disks)) |
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for name, disks in value.items()) |
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|
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def _PrepareFileUpload(getents_fn, filename): |
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"""Loads a file and prepares it for an upload to nodes.
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|
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"""
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statcb = utils.FileStatHelper() |
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data = _Compress(utils.ReadFile(filename, preread=statcb)) |
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st = statcb.st |
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|
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if getents_fn is None: |
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getents_fn = runtime.GetEnts |
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getents = getents_fn() |
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virt_filename = vcluster.MakeVirtualPath(filename) |
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return [virt_filename, data, st.st_mode, getents.LookupUid(st.st_uid),
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getents.LookupGid(st.st_gid), st.st_atime, st.st_mtime] |
532 |
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|
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def _PrepareFinalizeExportDisks(snap_disks): |
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"""Encodes disks for finalizing export.
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"""
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flat_disks = [] |
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540 |
for disk in snap_disks: |
541 |
if isinstance(disk, bool): |
542 |
flat_disks.append(disk) |
543 |
else:
|
544 |
flat_disks.append(disk.ToDict()) |
545 |
|
546 |
return flat_disks
|
547 |
|
548 |
|
549 |
def _EncodeImportExportIO((ieio, ieioargs)): |
550 |
"""Encodes import/export I/O information.
|
551 |
|
552 |
"""
|
553 |
if ieio == constants.IEIO_RAW_DISK:
|
554 |
assert len(ieioargs) == 1 |
555 |
return (ieio, (ieioargs[0].ToDict(), )) |
556 |
|
557 |
if ieio == constants.IEIO_SCRIPT:
|
558 |
assert len(ieioargs) == 2 |
559 |
return (ieio, (ieioargs[0].ToDict(), ieioargs[1])) |
560 |
|
561 |
return (ieio, ieioargs)
|
562 |
|
563 |
|
564 |
def _EncodeBlockdevRename(value): |
565 |
"""Encodes information for renaming block devices.
|
566 |
|
567 |
"""
|
568 |
return [(d.ToDict(), uid) for d, uid in value] |
569 |
|
570 |
|
571 |
def MakeLegacyNodeInfo(data): |
572 |
"""Formats the data returned by L{rpc.RpcRunner.call_node_info}.
|
573 |
|
574 |
Converts the data into a single dictionary. This is fine for most use cases,
|
575 |
but some require information from more than one volume group or hypervisor.
|
576 |
|
577 |
"""
|
578 |
(bootid, (vg_info, ), (hv_info, )) = data |
579 |
|
580 |
return utils.JoinDisjointDicts(utils.JoinDisjointDicts(vg_info, hv_info), {
|
581 |
"bootid": bootid,
|
582 |
}) |
583 |
|
584 |
|
585 |
def _AnnotateDParamsDRBD(disk, (drbd_params, data_params, meta_params)): |
586 |
"""Annotates just DRBD disks layouts.
|
587 |
|
588 |
"""
|
589 |
assert disk.dev_type == constants.LD_DRBD8
|
590 |
|
591 |
disk.params = objects.FillDict(drbd_params, disk.params) |
592 |
(dev_data, dev_meta) = disk.children |
593 |
dev_data.params = objects.FillDict(data_params, dev_data.params) |
594 |
dev_meta.params = objects.FillDict(meta_params, dev_meta.params) |
595 |
|
596 |
return disk
|
597 |
|
598 |
|
599 |
def _AnnotateDParamsGeneric(disk, (params, )): |
600 |
"""Generic disk parameter annotation routine.
|
601 |
|
602 |
"""
|
603 |
assert disk.dev_type != constants.LD_DRBD8
|
604 |
|
605 |
disk.params = objects.FillDict(params, disk.params) |
606 |
|
607 |
return disk
|
608 |
|
609 |
|
610 |
def AnnotateDiskParams(template, disks, disk_params): |
611 |
"""Annotates the disk objects with the disk parameters.
|
612 |
|
613 |
@param template: The disk template used
|
614 |
@param disks: The list of disks objects to annotate
|
615 |
@param disk_params: The disk paramaters for annotation
|
616 |
@returns: A list of disk objects annotated
|
617 |
|
618 |
"""
|
619 |
ld_params = objects.Disk.ComputeLDParams(template, disk_params) |
620 |
|
621 |
if template == constants.DT_DRBD8:
|
622 |
annotation_fn = _AnnotateDParamsDRBD |
623 |
elif template == constants.DT_DISKLESS:
|
624 |
annotation_fn = lambda disk, _: disk
|
625 |
else:
|
626 |
annotation_fn = _AnnotateDParamsGeneric |
627 |
|
628 |
return [annotation_fn(disk.Copy(), ld_params) for disk in disks] |
629 |
|
630 |
|
631 |
#: Generic encoders
|
632 |
_ENCODERS = { |
633 |
rpc_defs.ED_OBJECT_DICT: _ObjectToDict, |
634 |
rpc_defs.ED_OBJECT_DICT_LIST: _ObjectListToDict, |
635 |
rpc_defs.ED_NODE_TO_DISK_DICT: _EncodeNodeToDiskDict, |
636 |
rpc_defs.ED_COMPRESS: _Compress, |
637 |
rpc_defs.ED_FINALIZE_EXPORT_DISKS: _PrepareFinalizeExportDisks, |
638 |
rpc_defs.ED_IMPEXP_IO: _EncodeImportExportIO, |
639 |
rpc_defs.ED_BLOCKDEV_RENAME: _EncodeBlockdevRename, |
640 |
} |
641 |
|
642 |
|
643 |
class RpcRunner(_RpcClientBase, |
644 |
_generated_rpc.RpcClientDefault, |
645 |
_generated_rpc.RpcClientBootstrap, |
646 |
_generated_rpc.RpcClientDnsOnly, |
647 |
_generated_rpc.RpcClientConfig): |
648 |
"""RPC runner class.
|
649 |
|
650 |
"""
|
651 |
def __init__(self, cfg, lock_monitor_cb, _req_process_fn=None, _getents=None): |
652 |
"""Initialized the RPC runner.
|
653 |
|
654 |
@type cfg: L{config.ConfigWriter}
|
655 |
@param cfg: Configuration
|
656 |
@type lock_monitor_cb: callable
|
657 |
@param lock_monitor_cb: Lock monitor callback
|
658 |
|
659 |
"""
|
660 |
self._cfg = cfg
|
661 |
|
662 |
encoders = _ENCODERS.copy() |
663 |
|
664 |
encoders.update({ |
665 |
# Encoders requiring configuration object
|
666 |
rpc_defs.ED_INST_DICT: self._InstDict,
|
667 |
rpc_defs.ED_INST_DICT_HVP_BEP_DP: self._InstDictHvpBepDp,
|
668 |
rpc_defs.ED_INST_DICT_OSP_DP: self._InstDictOspDp,
|
669 |
|
670 |
# Encoders annotating disk parameters
|
671 |
rpc_defs.ED_DISKS_DICT_DP: self._DisksDictDP,
|
672 |
rpc_defs.ED_SINGLE_DISK_DICT_DP: self._SingleDiskDictDP,
|
673 |
|
674 |
# Encoders with special requirements
|
675 |
rpc_defs.ED_FILE_DETAILS: compat.partial(_PrepareFileUpload, _getents), |
676 |
}) |
677 |
|
678 |
# Resolver using configuration
|
679 |
resolver = compat.partial(_NodeConfigResolver, cfg.GetNodeInfo, |
680 |
cfg.GetAllNodesInfo) |
681 |
|
682 |
# Pylint doesn't recognize multiple inheritance properly, see
|
683 |
# <http://www.logilab.org/ticket/36586> and
|
684 |
# <http://www.logilab.org/ticket/35642>
|
685 |
# pylint: disable=W0233
|
686 |
_RpcClientBase.__init__(self, resolver, encoders.get,
|
687 |
lock_monitor_cb=lock_monitor_cb, |
688 |
_req_process_fn=_req_process_fn) |
689 |
_generated_rpc.RpcClientConfig.__init__(self)
|
690 |
_generated_rpc.RpcClientBootstrap.__init__(self)
|
691 |
_generated_rpc.RpcClientDnsOnly.__init__(self)
|
692 |
_generated_rpc.RpcClientDefault.__init__(self)
|
693 |
|
694 |
def _InstDict(self, instance, hvp=None, bep=None, osp=None): |
695 |
"""Convert the given instance to a dict.
|
696 |
|
697 |
This is done via the instance's ToDict() method and additionally
|
698 |
we fill the hvparams with the cluster defaults.
|
699 |
|
700 |
@type instance: L{objects.Instance}
|
701 |
@param instance: an Instance object
|
702 |
@type hvp: dict or None
|
703 |
@param hvp: a dictionary with overridden hypervisor parameters
|
704 |
@type bep: dict or None
|
705 |
@param bep: a dictionary with overridden backend parameters
|
706 |
@type osp: dict or None
|
707 |
@param osp: a dictionary with overridden os parameters
|
708 |
@rtype: dict
|
709 |
@return: the instance dict, with the hvparams filled with the
|
710 |
cluster defaults
|
711 |
|
712 |
"""
|
713 |
idict = instance.ToDict() |
714 |
cluster = self._cfg.GetClusterInfo()
|
715 |
idict["hvparams"] = cluster.FillHV(instance)
|
716 |
if hvp is not None: |
717 |
idict["hvparams"].update(hvp)
|
718 |
idict["beparams"] = cluster.FillBE(instance)
|
719 |
if bep is not None: |
720 |
idict["beparams"].update(bep)
|
721 |
idict["osparams"] = cluster.SimpleFillOS(instance.os, instance.osparams)
|
722 |
if osp is not None: |
723 |
idict["osparams"].update(osp)
|
724 |
for nic in idict["nics"]: |
725 |
nic["nicparams"] = objects.FillDict(
|
726 |
cluster.nicparams[constants.PP_DEFAULT], |
727 |
nic["nicparams"])
|
728 |
idict["disks"] = self._DisksDictDP((instance.disks, instance)) |
729 |
return idict
|
730 |
|
731 |
def _InstDictHvpBepDp(self, (instance, hvp, bep)): |
732 |
"""Wrapper for L{_InstDict}.
|
733 |
|
734 |
"""
|
735 |
return self._InstDict(instance, hvp=hvp, bep=bep) |
736 |
|
737 |
def _InstDictOspDp(self, (instance, osparams)): |
738 |
"""Wrapper for L{_InstDict}.
|
739 |
|
740 |
"""
|
741 |
return self._InstDict(instance, osp=osparams) |
742 |
|
743 |
def _DisksDictDP(self, (disks, instance)): |
744 |
"""Wrapper for L{AnnotateDiskParams}.
|
745 |
|
746 |
"""
|
747 |
diskparams = self._cfg.GetInstanceDiskParams(instance)
|
748 |
return [disk.ToDict()
|
749 |
for disk in AnnotateDiskParams(instance.disk_template, |
750 |
disks, diskparams)] |
751 |
|
752 |
def _SingleDiskDictDP(self, (disk, instance)): |
753 |
"""Wrapper for L{AnnotateDiskParams}.
|
754 |
|
755 |
"""
|
756 |
(anno_disk,) = self._DisksDictDP(([disk], instance))
|
757 |
return anno_disk
|
758 |
|
759 |
|
760 |
class JobQueueRunner(_RpcClientBase, _generated_rpc.RpcClientJobQueue): |
761 |
"""RPC wrappers for job queue.
|
762 |
|
763 |
"""
|
764 |
def __init__(self, context, address_list): |
765 |
"""Initializes this class.
|
766 |
|
767 |
"""
|
768 |
if address_list is None: |
769 |
resolver = compat.partial(_SsconfResolver, True)
|
770 |
else:
|
771 |
# Caller provided an address list
|
772 |
resolver = _StaticResolver(address_list) |
773 |
|
774 |
_RpcClientBase.__init__(self, resolver, _ENCODERS.get,
|
775 |
lock_monitor_cb=context.glm.AddToLockMonitor) |
776 |
_generated_rpc.RpcClientJobQueue.__init__(self)
|
777 |
|
778 |
|
779 |
class BootstrapRunner(_RpcClientBase, |
780 |
_generated_rpc.RpcClientBootstrap, |
781 |
_generated_rpc.RpcClientDnsOnly): |
782 |
"""RPC wrappers for bootstrapping.
|
783 |
|
784 |
"""
|
785 |
def __init__(self): |
786 |
"""Initializes this class.
|
787 |
|
788 |
"""
|
789 |
# Pylint doesn't recognize multiple inheritance properly, see
|
790 |
# <http://www.logilab.org/ticket/36586> and
|
791 |
# <http://www.logilab.org/ticket/35642>
|
792 |
# pylint: disable=W0233
|
793 |
_RpcClientBase.__init__(self, compat.partial(_SsconfResolver, True), |
794 |
_ENCODERS.get) |
795 |
_generated_rpc.RpcClientBootstrap.__init__(self)
|
796 |
_generated_rpc.RpcClientDnsOnly.__init__(self)
|
797 |
|
798 |
|
799 |
class DnsOnlyRunner(_RpcClientBase, _generated_rpc.RpcClientDnsOnly): |
800 |
"""RPC wrappers for calls using only DNS.
|
801 |
|
802 |
"""
|
803 |
def __init__(self): |
804 |
"""Initialize this class.
|
805 |
|
806 |
"""
|
807 |
_RpcClientBase.__init__(self, compat.partial(_SsconfResolver, False), |
808 |
_ENCODERS.get) |
809 |
_generated_rpc.RpcClientDnsOnly.__init__(self)
|
810 |
|
811 |
|
812 |
class ConfigRunner(_RpcClientBase, _generated_rpc.RpcClientConfig): |
813 |
"""RPC wrappers for L{config}.
|
814 |
|
815 |
"""
|
816 |
def __init__(self, context, address_list, _req_process_fn=None, |
817 |
_getents=None):
|
818 |
"""Initializes this class.
|
819 |
|
820 |
"""
|
821 |
if context:
|
822 |
lock_monitor_cb = context.glm.AddToLockMonitor |
823 |
else:
|
824 |
lock_monitor_cb = None
|
825 |
|
826 |
if address_list is None: |
827 |
resolver = compat.partial(_SsconfResolver, True)
|
828 |
else:
|
829 |
# Caller provided an address list
|
830 |
resolver = _StaticResolver(address_list) |
831 |
|
832 |
encoders = _ENCODERS.copy() |
833 |
|
834 |
encoders.update({ |
835 |
rpc_defs.ED_FILE_DETAILS: compat.partial(_PrepareFileUpload, _getents), |
836 |
}) |
837 |
|
838 |
_RpcClientBase.__init__(self, resolver, encoders.get,
|
839 |
lock_monitor_cb=lock_monitor_cb, |
840 |
_req_process_fn=_req_process_fn) |
841 |
_generated_rpc.RpcClientConfig.__init__(self)
|