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#

# Copyright (C) 2007, 2008 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.

"""Remote API QA tests.

"""

import urllib2

from ganeti import utils

from ganeti import constants

from ganeti import errors

from ganeti import serializer

import qa_config

import qa_utils

import qa_error

from qa_utils import AssertEqual, AssertNotEqual, AssertIn, StartSSH

# Create opener which doesn't try to look for proxies.

NoProxyOpener = urllib2.build_opener(urllib2.ProxyHandler({}))

INSTANCE_FIELDS = ("name", "os", "pnode", "snodes",

                   "admin_state", "admin_ram",

                   "disk_template", "ip", "mac", "bridge",

                   "sda_size", "sdb_size", "vcpus",

                   "oper_state", "status", "tags")

NODE_FIELDS = ("name", "dtotal", "dfree",

               "mtotal", "mnode", "mfree",

               "pinst_cnt", "sinst_cnt", "tags")

LIST_FIELDS = ("name", "uri")

def Enabled():

  """Return whether remote API tests should be run.

  """

  return constants.RAPI_ENABLE and qa_config.TestEnabled('rapi')

def PrintRemoteAPIWarning():

  """Print warning if remote API is not enabled.

  """

  if constants.RAPI_ENABLE or not qa_config.TestEnabled('rapi'):

    return

  msg = ("Remote API is not enabled in this Ganeti build. Please run"

         " `configure [...] --enable-rapi'.")

  print

  print qa_utils.FormatWarning(msg)

def _DoTests(uris):

  master = qa_config.GetMasterNode()

  host = master["primary"]

  port = qa_config.get("rapi-port", default=constants.RAPI_PORT)

  for uri, verify in uris:

    assert uri.startswith("/")

    url = "http://%s:%s%s" % (host, port, uri)

    print "Testing %s ..." % url

    response = NoProxyOpener.open(url)

    AssertEqual(response.info()["Content-type"], "application/json")

    data = serializer.LoadJson(response.read())

    if verify is not None:

      if callable(verify):

        verify(data)

      else:

        AssertEqual(data, verify)

@qa_utils.DefineHook('rapi-version')

def TestVersion():

  """Testing remote API version.

  """

  _DoTests([

    ("/version", constants.RAPI_VERSION),

    ])

@qa_utils.DefineHook('rapi-empty-cluster')

def TestEmptyCluster():

  """Testing remote API on an empty cluster.

  """

  master_name = qa_config.GetMasterNode()["primary"]

  def _VerifyInfo(data):

    AssertIn("name", data)

    AssertIn("master", data)

    AssertEqual(data["master"], master_name)

  def _VerifyNodes(data):

    master_entry = {

      "name": master_name,

      "uri": "/nodes/%s" % master_name,

      }

    AssertIn(master_entry, data)

  def _VerifyNodesBulk(data):

    for node in data:

      for entry in NODE_FIELDS:

        AssertIn(entry, node)

  _DoTests([

    ("/", None),

    ("/info", _VerifyInfo),

    ("/tags", None),

    ("/nodes", _VerifyNodes),

    ("/nodes?bulk=1", _VerifyNodesBulk),

    ("/instances", []),

    ("/instances?bulk=1", []),

    ("/os", None),

    ])

@qa_utils.DefineHook('rapi-instance')

def TestInstance(instance):

  """Testing getting instance(s) info via remote API.

  """

  def _VerifyInstance(data):

    for entry in INSTANCE_FIELDS:

      AssertIn(entry, data)

  def _VerifyInstancesList(data):

    for instance in data:

      for entry in LIST_FIELDS: 

        AssertIn(entry, instance)

  def _VerifyInstancesBulk(data):

    for instance_data in data:

      _VerifyInstance(instance_data)

  _DoTests([

    ("/instances/%s" % instance["name"], _VerifyInstance),

    ("/instances", _VerifyInstancesList),

    ("/instances?bulk=1", _VerifyInstancesBulk),

    ])

@qa_utils.DefineHook('rapi-node')

def TestNode(node):

  """Testing getting node(s) info via remote API.

  """

  def _VerifyNode(data):

    for entry in NODE_FIELDS:

      AssertIn(entry, data)

  def _VerifyNodesList(data):

    for node in data:

      for entry in LIST_FIELDS: 

        AssertIn(entry, node)

  def _VerifyNodesBulk(data):

    for node_data in data:

      _VerifyNode(node_data)

  _DoTests([

    ("/nodes/%s" % node["primary"], _VerifyNode),

    ("/nodes", _VerifyNodesList),

    ("/nodes?bulk=1", _VerifyNodesBulk),

    ])

def TestTags(kind, name, tags):

  """Tests .../tags resources.

  """

  if kind == constants.TAG_CLUSTER:

    uri = "/tags"

  elif kind == constants.TAG_NODE:

    uri = "/nodes/%s/tags" % name

  elif kind == constants.TAG_INSTANCE:

    uri = "/instances/%s/tags" % name

  else:

    raise errors.ProgrammerError("Unknown tag kind")

  def _VerifyTags(data):

    # Create copies to modify

    should = tags[:]

    should.sort()

    returned = data[:]

    returned.sort()

    AssertEqual(should, returned)

  _DoTests([

    (uri, _VerifyTags),

    ])