Synnefo » snf-ganeti

#!/usr/bin/python

#

# Copyright (C) 2010, 2011, 2012, 2013 Google Inc.

#

# This program 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 2 of the License, or

# (at your option) any later version.

#

# This program 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 this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

# 02110-1301, USA.

"""Script for testing ganeti.rpc"""

import os

import sys

import unittest

import random

import tempfile

from ganeti import constants

from ganeti import compat

from ganeti import rpc

from ganeti import rpc_defs

from ganeti import http

from ganeti import errors

from ganeti import serializer

from ganeti import objects

from ganeti import backend

import testutils

import mocks

class _FakeRequestProcessor:

  def __init__(self, response_fn):

    self._response_fn = response_fn

    self.reqcount = 0

  def __call__(self, reqs, lock_monitor_cb=None):

    assert lock_monitor_cb is None or callable(lock_monitor_cb)

    for req in reqs:

      self.reqcount += 1

      self._response_fn(req)

def GetFakeSimpleStoreClass(fn):

  class FakeSimpleStore:

    GetNodePrimaryIPList = fn

    GetPrimaryIPFamily = lambda _: None

  return FakeSimpleStore

def _RaiseNotImplemented():

  """Simple wrapper to raise NotImplementedError.

  """

  raise NotImplementedError

class TestRpcProcessor(unittest.TestCase):

  def _FakeAddressLookup(self, map):

    return lambda node_list: [map.get(node) for node in node_list]

  def _GetVersionResponse(self, req):

    self.assertEqual(req.host, "127.0.0.1")

    self.assertEqual(req.port, 24094)

    self.assertEqual(req.path, "/version")

    self.assertEqual(req.read_timeout, constants.RPC_TMO_URGENT)

    req.success = True

    req.resp_status_code = http.HTTP_OK

    req.resp_body = serializer.DumpJson((True, 123))

  def testVersionSuccess(self):

    resolver = rpc._StaticResolver(["127.0.0.1"])

    http_proc = _FakeRequestProcessor(self._GetVersionResponse)

    proc = rpc._RpcProcessor(resolver, 24094)

    result = proc(["localhost"], "version", {"localhost": ""}, 60,

                  NotImplemented, _req_process_fn=http_proc)

    self.assertEqual(result.keys(), ["localhost"])

    lhresp = result["localhost"]

    self.assertFalse(lhresp.offline)

    self.assertEqual(lhresp.node, "localhost")

    self.assertFalse(lhresp.fail_msg)

    self.assertEqual(lhresp.payload, 123)

    self.assertEqual(lhresp.call, "version")

    lhresp.Raise("should not raise")

    self.assertEqual(http_proc.reqcount, 1)

  def _ReadTimeoutResponse(self, req):

    self.assertEqual(req.host, "192.0.2.13")

    self.assertEqual(req.port, 19176)

    self.assertEqual(req.path, "/version")

    self.assertEqual(req.read_timeout, 12356)

    req.success = True

    req.resp_status_code = http.HTTP_OK

    req.resp_body = serializer.DumpJson((True, -1))

  def testReadTimeout(self):

    resolver = rpc._StaticResolver(["192.0.2.13"])

    http_proc = _FakeRequestProcessor(self._ReadTimeoutResponse)

    proc = rpc._RpcProcessor(resolver, 19176)

    host = "node31856"

    body = {host: ""}

    result = proc([host], "version", body, 12356, NotImplemented,

                  _req_process_fn=http_proc)

    self.assertEqual(result.keys(), [host])

    lhresp = result[host]

    self.assertFalse(lhresp.offline)

    self.assertEqual(lhresp.node, host)

    self.assertFalse(lhresp.fail_msg)

    self.assertEqual(lhresp.payload, -1)

    self.assertEqual(lhresp.call, "version")

    lhresp.Raise("should not raise")

    self.assertEqual(http_proc.reqcount, 1)

  def testOfflineNode(self):

    resolver = rpc._StaticResolver([rpc._OFFLINE])

    http_proc = _FakeRequestProcessor(NotImplemented)

    proc = rpc._RpcProcessor(resolver, 30668)

    host = "n17296"

    body = {host: ""}

    result = proc([host], "version", body, 60, NotImplemented,

                  _req_process_fn=http_proc)

    self.assertEqual(result.keys(), [host])

    lhresp = result[host]

    self.assertTrue(lhresp.offline)

    self.assertEqual(lhresp.node, host)

    self.assertTrue(lhresp.fail_msg)

    self.assertFalse(lhresp.payload)

    self.assertEqual(lhresp.call, "version")

    # With a message

    self.assertRaises(errors.OpExecError, lhresp.Raise, "should raise")

    # No message

    self.assertRaises(errors.OpExecError, lhresp.Raise, None)

    self.assertEqual(http_proc.reqcount, 0)

  def _GetMultiVersionResponse(self, req):

    self.assert_(req.host.startswith("node"))

    self.assertEqual(req.port, 23245)

    self.assertEqual(req.path, "/version")

    req.success = True

    req.resp_status_code = http.HTTP_OK

    req.resp_body = serializer.DumpJson((True, 987))

  def testMultiVersionSuccess(self):

    nodes = ["node%s" % i for i in range(50)]

    body = dict((n, "") for n in nodes)

    resolver = rpc._StaticResolver(nodes)

    http_proc = _FakeRequestProcessor(self._GetMultiVersionResponse)

    proc = rpc._RpcProcessor(resolver, 23245)

    result = proc(nodes, "version", body, 60, NotImplemented,

                  _req_process_fn=http_proc)

    self.assertEqual(sorted(result.keys()), sorted(nodes))

    for name in nodes:

      lhresp = result[name]

      self.assertFalse(lhresp.offline)

      self.assertEqual(lhresp.node, name)

      self.assertFalse(lhresp.fail_msg)

      self.assertEqual(lhresp.payload, 987)

      self.assertEqual(lhresp.call, "version")

      lhresp.Raise("should not raise")

    self.assertEqual(http_proc.reqcount, len(nodes))

  def _GetVersionResponseFail(self, errinfo, req):

    self.assertEqual(req.path, "/version")

    req.success = True

    req.resp_status_code = http.HTTP_OK

    req.resp_body = serializer.DumpJson((False, errinfo))

  def testVersionFailure(self):

    resolver = rpc._StaticResolver(["aef9ur4i.example.com"])

    proc = rpc._RpcProcessor(resolver, 5903)

    for errinfo in [None, "Unknown error"]:

      http_proc = \

        _FakeRequestProcessor(compat.partial(self._GetVersionResponseFail,

                                             errinfo))

      host = "aef9ur4i.example.com"

      body = {host: ""}

      result = proc(body.keys(), "version", body, 60, NotImplemented,

                    _req_process_fn=http_proc)

      self.assertEqual(result.keys(), [host])

      lhresp = result[host]

      self.assertFalse(lhresp.offline)

      self.assertEqual(lhresp.node, host)

      self.assert_(lhresp.fail_msg)

      self.assertFalse(lhresp.payload)

      self.assertEqual(lhresp.call, "version")

      self.assertRaises(errors.OpExecError, lhresp.Raise, "failed")

      self.assertEqual(http_proc.reqcount, 1)

  def _GetHttpErrorResponse(self, httperrnodes, failnodes, req):

    self.assertEqual(req.path, "/vg_list")

    self.assertEqual(req.port, 15165)

    if req.host in httperrnodes:

      req.success = False

      req.error = "Node set up for HTTP errors"

    elif req.host in failnodes:

      req.success = True

      req.resp_status_code = 404

      req.resp_body = serializer.DumpJson({

        "code": 404,

        "message": "Method not found",

        "explain": "Explanation goes here",

        })

    else:

      req.success = True

      req.resp_status_code = http.HTTP_OK

      req.resp_body = serializer.DumpJson((True, hash(req.host)))

  def testHttpError(self):

    nodes = ["uaf6pbbv%s" % i for i in range(50)]

    body = dict((n, "") for n in nodes)

    resolver = rpc._StaticResolver(nodes)

    httperrnodes = set(nodes[1::7])

    self.assertEqual(len(httperrnodes), 7)

    failnodes = set(nodes[2::3]) - httperrnodes

    self.assertEqual(len(failnodes), 14)

    self.assertEqual(len(set(nodes) - failnodes - httperrnodes), 29)

    proc = rpc._RpcProcessor(resolver, 15165)

    http_proc = \

      _FakeRequestProcessor(compat.partial(self._GetHttpErrorResponse,

                                           httperrnodes, failnodes))

    result = proc(nodes, "vg_list", body,

                  constants.RPC_TMO_URGENT, NotImplemented,

                  _req_process_fn=http_proc)

    self.assertEqual(sorted(result.keys()), sorted(nodes))

    for name in nodes:

      lhresp = result[name]

      self.assertFalse(lhresp.offline)

      self.assertEqual(lhresp.node, name)

      self.assertEqual(lhresp.call, "vg_list")

      if name in httperrnodes:

        self.assert_(lhresp.fail_msg)

        self.assertRaises(errors.OpExecError, lhresp.Raise, "failed")

      elif name in failnodes:

        self.assert_(lhresp.fail_msg)

        self.assertRaises(errors.OpPrereqError, lhresp.Raise, "failed",

                          prereq=True, ecode=errors.ECODE_INVAL)

      else:

        self.assertFalse(lhresp.fail_msg)

        self.assertEqual(lhresp.payload, hash(name))

        lhresp.Raise("should not raise")

    self.assertEqual(http_proc.reqcount, len(nodes))

  def _GetInvalidResponseA(self, req):

    self.assertEqual(req.path, "/version")

    req.success = True

    req.resp_status_code = http.HTTP_OK

    req.resp_body = serializer.DumpJson(("This", "is", "an", "invalid",

                                         "response", "!", 1, 2, 3))

  def _GetInvalidResponseB(self, req):

    self.assertEqual(req.path, "/version")

    req.success = True

    req.resp_status_code = http.HTTP_OK

    req.resp_body = serializer.DumpJson("invalid response")

  def testInvalidResponse(self):

    resolver = rpc._StaticResolver(["oqo7lanhly.example.com"])

    proc = rpc._RpcProcessor(resolver, 19978)

    for fn in [self._GetInvalidResponseA, self._GetInvalidResponseB]:

      http_proc = _FakeRequestProcessor(fn)

      host = "oqo7lanhly.example.com"

      body = {host: ""}

      result = proc([host], "version", body, 60, NotImplemented,

                    _req_process_fn=http_proc)

      self.assertEqual(result.keys(), [host])

      lhresp = result[host]

      self.assertFalse(lhresp.offline)

      self.assertEqual(lhresp.node, host)

      self.assert_(lhresp.fail_msg)

      self.assertFalse(lhresp.payload)

      self.assertEqual(lhresp.call, "version")

      self.assertRaises(errors.OpExecError, lhresp.Raise, "failed")

      self.assertEqual(http_proc.reqcount, 1)

  def _GetBodyTestResponse(self, test_data, req):

    self.assertEqual(req.host, "192.0.2.84")

    self.assertEqual(req.port, 18700)

    self.assertEqual(req.path, "/upload_file")

    self.assertEqual(serializer.LoadJson(req.post_data), test_data)

    req.success = True

    req.resp_status_code = http.HTTP_OK

    req.resp_body = serializer.DumpJson((True, None))

  def testResponseBody(self):

    test_data = {

      "Hello": "World",

      "xyz": range(10),

      }

    resolver = rpc._StaticResolver(["192.0.2.84"])

    http_proc = _FakeRequestProcessor(compat.partial(self._GetBodyTestResponse,

                                                     test_data))

    proc = rpc._RpcProcessor(resolver, 18700)

    host = "node19759"

    body = {host: serializer.DumpJson(test_data)}

    result = proc([host], "upload_file", body, 30, NotImplemented,

                  _req_process_fn=http_proc)

    self.assertEqual(result.keys(), [host])

    lhresp = result[host]

    self.assertFalse(lhresp.offline)

    self.assertEqual(lhresp.node, host)

    self.assertFalse(lhresp.fail_msg)

    self.assertEqual(lhresp.payload, None)

    self.assertEqual(lhresp.call, "upload_file")

    lhresp.Raise("should not raise")

    self.assertEqual(http_proc.reqcount, 1)

class TestSsconfResolver(unittest.TestCase):

  def testSsconfLookup(self):

    addr_list = ["192.0.2.%d" % n for n in range(0, 255, 13)]

    node_list = ["node%d.example.com" % n for n in range(0, 255, 13)]

    node_addr_list = [" ".join(t) for t in zip(node_list, addr_list)]

    ssc = GetFakeSimpleStoreClass(lambda _: node_addr_list)

    result = rpc._SsconfResolver(True, node_list, NotImplemented,

                                 ssc=ssc, nslookup_fn=NotImplemented)

    self.assertEqual(result, zip(node_list, addr_list, node_list))

  def testNsLookup(self):

    addr_list = ["192.0.2.%d" % n for n in range(0, 255, 13)]

    node_list = ["node%d.example.com" % n for n in range(0, 255, 13)]

    ssc = GetFakeSimpleStoreClass(lambda _: [])

    node_addr_map = dict(zip(node_list, addr_list))

    nslookup_fn = lambda name, family=None: node_addr_map.get(name)

    result = rpc._SsconfResolver(True, node_list, NotImplemented,

                                 ssc=ssc, nslookup_fn=nslookup_fn)

    self.assertEqual(result, zip(node_list, addr_list, node_list))

  def testDisabledSsconfIp(self):

    addr_list = ["192.0.2.%d" % n for n in range(0, 255, 13)]

    node_list = ["node%d.example.com" % n for n in range(0, 255, 13)]

    ssc = GetFakeSimpleStoreClass(_RaiseNotImplemented)

    node_addr_map = dict(zip(node_list, addr_list))

    nslookup_fn = lambda name, family=None: node_addr_map.get(name)

    result = rpc._SsconfResolver(False, node_list, NotImplemented,

                                 ssc=ssc, nslookup_fn=nslookup_fn)

    self.assertEqual(result, zip(node_list, addr_list, node_list))

  def testBothLookups(self):

    addr_list = ["192.0.2.%d" % n for n in range(0, 255, 13)]

    node_list = ["node%d.example.com" % n for n in range(0, 255, 13)]

    n = len(addr_list) / 2

    node_addr_list = [" ".join(t) for t in zip(node_list[n:], addr_list[n:])]

    ssc = GetFakeSimpleStoreClass(lambda _: node_addr_list)

    node_addr_map = dict(zip(node_list[:n], addr_list[:n]))

    nslookup_fn = lambda name, family=None: node_addr_map.get(name)

    result = rpc._SsconfResolver(True, node_list, NotImplemented,

                                 ssc=ssc, nslookup_fn=nslookup_fn)

    self.assertEqual(result, zip(node_list, addr_list, node_list))

  def testAddressLookupIPv6(self):

    addr_list = ["2001:db8::%d" % n for n in range(0, 255, 11)]

    node_list = ["node%d.example.com" % n for n in range(0, 255, 11)]

    node_addr_list = [" ".join(t) for t in zip(node_list, addr_list)]

    ssc = GetFakeSimpleStoreClass(lambda _: node_addr_list)

    result = rpc._SsconfResolver(True, node_list, NotImplemented,

                                 ssc=ssc, nslookup_fn=NotImplemented)

    self.assertEqual(result, zip(node_list, addr_list, node_list))

class TestStaticResolver(unittest.TestCase):

  def test(self):

    addresses = ["192.0.2.%d" % n for n in range(0, 123, 7)]

    nodes = ["node%s.example.com" % n for n in range(0, 123, 7)]

    res = rpc._StaticResolver(addresses)

    self.assertEqual(res(nodes, NotImplemented), zip(nodes, addresses, nodes))

  def testWrongLength(self):

    res = rpc._StaticResolver([])

    self.assertRaises(AssertionError, res, ["abc"], NotImplemented)

class TestNodeConfigResolver(unittest.TestCase):

  @staticmethod

  def _GetSingleOnlineNode(uuid):

    assert uuid == "node90-uuid"

    return objects.Node(name="node90.example.com",

                        uuid=uuid,

                        offline=False,

                        primary_ip="192.0.2.90")

  @staticmethod

  def _GetSingleOfflineNode(uuid):

    assert uuid == "node100-uuid"

    return objects.Node(name="node100.example.com",

                        uuid=uuid,

                        offline=True,

                        primary_ip="192.0.2.100")

  def testSingleOnline(self):

    self.assertEqual(rpc._NodeConfigResolver(self._GetSingleOnlineNode,

                                             NotImplemented,

                                             ["node90-uuid"], None),

                     [("node90.example.com", "192.0.2.90", "node90-uuid")])

  def testSingleOffline(self):

    self.assertEqual(rpc._NodeConfigResolver(self._GetSingleOfflineNode,

                                             NotImplemented,

                                             ["node100-uuid"], None),

                     [("node100.example.com", rpc._OFFLINE, "node100-uuid")])

  def testSingleOfflineWithAcceptOffline(self):

    fn = self._GetSingleOfflineNode

    assert fn("node100-uuid").offline

    self.assertEqual(rpc._NodeConfigResolver(fn, NotImplemented,

                                             ["node100-uuid"],

                                             rpc_defs.ACCEPT_OFFLINE_NODE),

                     [("node100.example.com", "192.0.2.100", "node100-uuid")])

    for i in [False, True, "", "Hello", 0, 1]:

      self.assertRaises(AssertionError, rpc._NodeConfigResolver,

                        fn, NotImplemented, ["node100.example.com"], i)

  def testUnknownSingleNode(self):

    self.assertEqual(rpc._NodeConfigResolver(lambda _: None, NotImplemented,

                                             ["node110.example.com"], None),

                     [("node110.example.com", "node110.example.com",

                       "node110.example.com")])

  def testMultiEmpty(self):

    self.assertEqual(rpc._NodeConfigResolver(NotImplemented,

                                             lambda: {},

                                             [], None),

                     [])

  def testMultiSomeOffline(self):

    nodes = dict(("node%s-uuid" % i,

                  objects.Node(name="node%s.example.com" % i,

                               offline=((i % 3) == 0),

                               primary_ip="192.0.2.%s" % i,

                               uuid="node%s-uuid" % i))

                  for i in range(1, 255))

    # Resolve no names

    self.assertEqual(rpc._NodeConfigResolver(NotImplemented,

                                             lambda: nodes,

                                             [], None),

                     [])

    # Offline, online and unknown hosts

    self.assertEqual(rpc._NodeConfigResolver(NotImplemented,

                                             lambda: nodes,

                                             ["node3-uuid",

                                              "node92-uuid",

                                              "node54-uuid",

                                              "unknown.example.com",],

                                             None), [

      ("node3.example.com", rpc._OFFLINE, "node3-uuid"),

      ("node92.example.com", "192.0.2.92", "node92-uuid"),

      ("node54.example.com", rpc._OFFLINE, "node54-uuid"),

      ("unknown.example.com", "unknown.example.com", "unknown.example.com"),

      ])

class TestCompress(unittest.TestCase):

  def test(self):

    for data in ["", "Hello", "Hello World!\nnew\nlines"]:

      self.assertEqual(rpc._Compress(NotImplemented, data),

                       (constants.RPC_ENCODING_NONE, data))

    for data in [512 * " ", 5242 * "Hello World!\n"]:

      compressed = rpc._Compress(NotImplemented, data)

      self.assertEqual(len(compressed), 2)

      self.assertEqual(backend._Decompress(compressed), data)

  def testDecompression(self):

    self.assertRaises(AssertionError, backend._Decompress, "")

    self.assertRaises(AssertionError, backend._Decompress, [""])

    self.assertRaises(AssertionError, backend._Decompress,

                      ("unknown compression", "data"))

    self.assertRaises(Exception, backend._Decompress,

                      (constants.RPC_ENCODING_ZLIB_BASE64, "invalid zlib data"))

class TestRpcClientBase(unittest.TestCase):

  def testNoHosts(self):

    cdef = ("test_call", NotImplemented, None, constants.RPC_TMO_SLOW, [],

            None, None, NotImplemented)

    http_proc = _FakeRequestProcessor(NotImplemented)

    client = rpc._RpcClientBase(rpc._StaticResolver([]), NotImplemented,

                                _req_process_fn=http_proc)

    self.assertEqual(client._Call(cdef, [], []), {})

    # Test wrong number of arguments

    self.assertRaises(errors.ProgrammerError, client._Call,

                      cdef, [], [0, 1, 2])

  def testTimeout(self):

    def _CalcTimeout((arg1, arg2)):

      return arg1 + arg2

    def _VerifyRequest(exp_timeout, req):

      self.assertEqual(req.read_timeout, exp_timeout)

      req.success = True

      req.resp_status_code = http.HTTP_OK

      req.resp_body = serializer.DumpJson((True, hex(req.read_timeout)))

    resolver = rpc._StaticResolver([

      "192.0.2.1",

      "192.0.2.2",

      ])

    nodes = [

      "node1.example.com",

      "node2.example.com",

      ]

    tests = [(100, None, 100), (30, None, 30)]

    tests.extend((_CalcTimeout, i, i + 300)

                 for i in [0, 5, 16485, 30516])

    for timeout, arg1, exp_timeout in tests:

      cdef = ("test_call", NotImplemented, None, timeout, [

        ("arg1", None, NotImplemented),

        ("arg2", None, NotImplemented),

        ], None, None, NotImplemented)

      http_proc = _FakeRequestProcessor(compat.partial(_VerifyRequest,

                                                       exp_timeout))

      client = rpc._RpcClientBase(resolver, NotImplemented,

                                  _req_process_fn=http_proc)

      result = client._Call(cdef, nodes, [arg1, 300])

      self.assertEqual(len(result), len(nodes))

      self.assertTrue(compat.all(not res.fail_msg and

                                 res.payload == hex(exp_timeout)

                                 for res in result.values()))

  def testArgumentEncoder(self):

    (AT1, AT2) = range(1, 3)

    resolver = rpc._StaticResolver([

      "192.0.2.5",

      "192.0.2.6",

      ])

    nodes = [

      "node5.example.com",

      "node6.example.com",

      ]

    encoders = {

      AT1: lambda _, value: hex(value),

      AT2: lambda _, value: hash(value),

      }

    cdef = ("test_call", NotImplemented, None, constants.RPC_TMO_NORMAL, [

      ("arg0", None, NotImplemented),

      ("arg1", AT1, NotImplemented),

      ("arg1", AT2, NotImplemented),

      ], None, None, NotImplemented)

    def _VerifyRequest(req):

      req.success = True

      req.resp_status_code = http.HTTP_OK

      req.resp_body = serializer.DumpJson((True, req.post_data))

    http_proc = _FakeRequestProcessor(_VerifyRequest)

    for num in [0, 3796, 9032119]:

      client = rpc._RpcClientBase(resolver, encoders.get,

                                  _req_process_fn=http_proc)

      result = client._Call(cdef, nodes, ["foo", num, "Hello%s" % num])

      self.assertEqual(len(result), len(nodes))

      for res in result.values():

        self.assertFalse(res.fail_msg)

        self.assertEqual(serializer.LoadJson(res.payload),

                         ["foo", hex(num), hash("Hello%s" % num)])

  def testPostProc(self):

    def _VerifyRequest(nums, req):

      req.success = True

      req.resp_status_code = http.HTTP_OK

      req.resp_body = serializer.DumpJson((True, nums))

    resolver = rpc._StaticResolver([

      "192.0.2.90",

      "192.0.2.95",

      ])

    nodes = [

      "node90.example.com",

      "node95.example.com",

      ]

    def _PostProc(res):

      self.assertFalse(res.fail_msg)

      res.payload = sum(res.payload)

      return res

    cdef = ("test_call", NotImplemented, None, constants.RPC_TMO_NORMAL, [],

            None, _PostProc, NotImplemented)

    # Seeded random generator

    rnd = random.Random(20299)

    for i in [0, 4, 74, 1391]:

      nums = [rnd.randint(0, 1000) for _ in range(i)]

      http_proc = _FakeRequestProcessor(compat.partial(_VerifyRequest, nums))

      client = rpc._RpcClientBase(resolver, NotImplemented,

                                  _req_process_fn=http_proc)

      result = client._Call(cdef, nodes, [])

      self.assertEqual(len(result), len(nodes))

      for res in result.values():

        self.assertFalse(res.fail_msg)

        self.assertEqual(res.payload, sum(nums))

  def testPreProc(self):

    def _VerifyRequest(req):

      req.success = True

      req.resp_status_code = http.HTTP_OK

      req.resp_body = serializer.DumpJson((True, req.post_data))

    resolver = rpc._StaticResolver([

      "192.0.2.30",

      "192.0.2.35",

      ])

    nodes = [

      "node30.example.com",

      "node35.example.com",

      ]

    def _PreProc(node, data):

      self.assertEqual(len(data), 1)

      return data[0] + node

    cdef = ("test_call", NotImplemented, None, constants.RPC_TMO_NORMAL, [

      ("arg0", None, NotImplemented),

      ], _PreProc, None, NotImplemented)

    http_proc = _FakeRequestProcessor(_VerifyRequest)

    client = rpc._RpcClientBase(resolver, NotImplemented,

                                _req_process_fn=http_proc)

    for prefix in ["foo", "bar", "baz"]:

      result = client._Call(cdef, nodes, [prefix])

      self.assertEqual(len(result), len(nodes))

      for (idx, (node, res)) in enumerate(result.items()):

        self.assertFalse(res.fail_msg)

        self.assertEqual(serializer.LoadJson(res.payload), prefix + node)

  def testResolverOptions(self):

    def _VerifyRequest(req):

      req.success = True

      req.resp_status_code = http.HTTP_OK

      req.resp_body = serializer.DumpJson((True, req.post_data))

    nodes = [

      "node30.example.com",

      "node35.example.com",

      ]

    def _Resolver(expected, hosts, options):

      self.assertEqual(hosts, nodes)

      self.assertEqual(options, expected)

      return zip(hosts, nodes, hosts)

    def _DynamicResolverOptions((arg0, )):

      return sum(arg0)

    tests = [

      (None, None, None),

      (rpc_defs.ACCEPT_OFFLINE_NODE, None, rpc_defs.ACCEPT_OFFLINE_NODE),

      (False, None, False),

      (True, None, True),

      (0, None, 0),

      (_DynamicResolverOptions, [1, 2, 3], 6),

      (_DynamicResolverOptions, range(4, 19), 165),

      ]

    for (resolver_opts, arg0, expected) in tests:

      cdef = ("test_call", NotImplemented, resolver_opts,

              constants.RPC_TMO_NORMAL, [

        ("arg0", None, NotImplemented),

        ], None, None, NotImplemented)

      http_proc = _FakeRequestProcessor(_VerifyRequest)

      client = rpc._RpcClientBase(compat.partial(_Resolver, expected),

                                  NotImplemented, _req_process_fn=http_proc)

      result = client._Call(cdef, nodes, [arg0])

      self.assertEqual(len(result), len(nodes))

      for (idx, (node, res)) in enumerate(result.items()):

        self.assertFalse(res.fail_msg)

class _FakeConfigForRpcRunner:

  GetAllNodesInfo = NotImplemented

  def __init__(self, cluster=NotImplemented):

    self._cluster = cluster

  def GetNodeInfo(self, name):

    return objects.Node(name=name)

  def GetMultiNodeInfo(self, names):

    return [(name, self.GetNodeInfo(name)) for name in names]

  def GetClusterInfo(self):

    return self._cluster

  def GetInstanceDiskParams(self, _):

    return constants.DISK_DT_DEFAULTS

class TestRpcRunner(unittest.TestCase):

  def testUploadFile(self):

    data = 1779 * "Hello World\n"

    tmpfile = tempfile.NamedTemporaryFile()

    tmpfile.write(data)

    tmpfile.flush()

    st = os.stat(tmpfile.name)

    nodes = [

      "node1.example.com",

      ]

    def _VerifyRequest(req):

      (uldata, ) = serializer.LoadJson(req.post_data)

      self.assertEqual(len(uldata), 7)

      self.assertEqual(uldata[0], tmpfile.name)

      self.assertEqual(list(uldata[1]), list(rpc._Compress(nodes[0], data)))

      self.assertEqual(uldata[2], st.st_mode)

      self.assertEqual(uldata[3], "user%s" % os.getuid())

      self.assertEqual(uldata[4], "group%s" % os.getgid())