python-jenkins/jenkins/__init__.py

#!/usr/bin/env python
# Software License Agreement (BSD License)
#
# Copyright (c) 2010, Willow Garage, Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
#  * Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#  * Redistributions in binary form must reproduce the above
#    copyright notice, this list of conditions and the following
#    disclaimer in the documentation and/or other materials provided
#    with the distribution.
#  * Neither the name of Willow Garage, Inc. nor the names of its
#    contributors may be used to endorse or promote products derived
#    from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# 'AS IS' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# Authors:
# Ken Conley <kwc@willowgarage.com>
# James Page <james.page@canonical.com>
# Tully Foote <tfoote@willowgarage.com>
# Matthew Gertner <matthew.gertner@gmail.com>

'''
.. module:: jenkins
    :platform: Unix, Windows
    :synopsis: Python API to interact with Jenkins
    :noindex:

See examples at :doc:`examples`
'''

import base64
import json
import re
import socket
import sys
import time
import warnings

import multi_key_dict
import six
from six.moves.http_client import BadStatusLine
from six.moves.urllib.error import HTTPError
from six.moves.urllib.error import URLError
from six.moves.urllib.parse import quote, urlencode, urljoin, urlparse
from six.moves.urllib.request import Request, install_opener, build_opener, urlopen

from jenkins import plugins

try:
    import kerberos
    assert kerberos  # pyflakes
    import urllib_kerb
    opener = build_opener()
    opener.add_handler(urllib_kerb.HTTPNegotiateHandler())
    install_opener(opener)
except ImportError:
    pass

warnings.simplefilter("default", DeprecationWarning)

if sys.version_info < (2, 7, 0):
    warnings.warn("Support for python 2.6 is deprecated and will be removed.")


LAUNCHER_SSH = 'hudson.plugins.sshslaves.SSHLauncher'
LAUNCHER_COMMAND = 'hudson.slaves.CommandLauncher'
LAUNCHER_JNLP = 'hudson.slaves.JNLPLauncher'
LAUNCHER_WINDOWS_SERVICE = 'hudson.os.windows.ManagedWindowsServiceLauncher'
DEFAULT_HEADERS = {'Content-Type': 'text/xml; charset=utf-8'}

# REST Endpoints
INFO = 'api/json'
PLUGIN_INFO = 'pluginManager/api/json?depth=%(depth)s'
CRUMB_URL = 'crumbIssuer/api/json'
WHOAMI_URL = 'me/api/json'
JOBS_QUERY = '?tree=jobs[url,color,name,jobs]'
JOB_INFO = '%(folder_url)sjob/%(short_name)s/api/json?depth=%(depth)s'
JOB_NAME = '%(folder_url)sjob/%(short_name)s/api/json?tree=name'
Q_INFO = 'queue/api/json?depth=0'
CANCEL_QUEUE = 'queue/cancelItem?id=%(id)s'
CREATE_JOB = '%(folder_url)screateItem?name=%(short_name)s'  # also post config.xml
CONFIG_JOB = '%(folder_url)sjob/%(short_name)s/config.xml'
DELETE_JOB = '%(folder_url)sjob/%(short_name)s/doDelete'
ENABLE_JOB = '%(folder_url)sjob/%(short_name)s/enable'
DISABLE_JOB = '%(folder_url)sjob/%(short_name)s/disable'
SET_JOB_BUILD_NUMBER = '%(folder_url)sjob/%(short_name)s/nextbuildnumber/submit'
COPY_JOB = '%(from_folder_url)screateItem?name=%(to_short_name)s&mode=copy&from=%(from_short_name)s'
RENAME_JOB = '%(from_folder_url)sjob/%(from_short_name)s/doRename?newName=%(to_short_name)s'
BUILD_JOB = '%(folder_url)sjob/%(short_name)s/build'
STOP_BUILD = '%(folder_url)sjob/%(short_name)s/%(number)s/stop'
BUILD_WITH_PARAMS_JOB = '%(folder_url)sjob/%(short_name)s/buildWithParameters'
BUILD_INFO = '%(folder_url)sjob/%(short_name)s/%(number)d/api/json?depth=%(depth)s'
BUILD_CONSOLE_OUTPUT = '%(folder_url)sjob/%(short_name)s/%(number)d/consoleText'
NODE_LIST = 'computer/api/json'
CREATE_NODE = 'computer/doCreateItem?%s'
DELETE_NODE = 'computer/%(name)s/doDelete'
NODE_INFO = 'computer/%(name)s/api/json?depth=%(depth)s'
NODE_TYPE = 'hudson.slaves.DumbSlave$DescriptorImpl'
TOGGLE_OFFLINE = 'computer/%(name)s/toggleOffline?offlineMessage=%(msg)s'
CONFIG_NODE = 'computer/%(name)s/config.xml'
VIEW_NAME = 'view/%(name)s/api/json?tree=name'
VIEW_JOBS = 'view/%(name)s/api/json?tree=jobs[url,color,name]'
CREATE_VIEW = 'createView?name=%(name)s'
CONFIG_VIEW = 'view/%(name)s/config.xml'
DELETE_VIEW = 'view/%(name)s/doDelete'
SCRIPT_TEXT = 'scriptText'
PROMOTION_NAME = '%(folder_url)sjob/%(short_name)s/promotion/process/%(name)s/api/json?tree=name'
PROMOTION_INFO = '%(folder_url)sjob/%(short_name)s/promotion/api/json?depth=%(depth)s'
DELETE_PROMOTION = '%(folder_url)sjob/%(short_name)s/promotion/process/%(name)s/doDelete'
CREATE_PROMOTION = '%(folder_url)sjob/%(short_name)s/promotion/createProcess?name=%(name)s'
CONFIG_PROMOTION = '%(folder_url)sjob/%(short_name)s/promotion/process/%(name)s/config.xml'
QUIET_DOWN = 'quietDown'

# for testing only
EMPTY_CONFIG_XML = '''<?xml version='1.0' encoding='UTF-8'?>
<project>
  <keepDependencies>false</keepDependencies>
  <properties/>
  <scm class='jenkins.scm.NullSCM'/>
  <canRoam>true</canRoam>
  <disabled>false</disabled>
  <blockBuildWhenUpstreamBuilding>false</blockBuildWhenUpstreamBuilding>
  <triggers class='vector'/>
  <concurrentBuild>false</concurrentBuild>
  <builders/>
  <publishers/>
  <buildWrappers/>
</project>'''

# for testing only
RECONFIG_XML = '''<?xml version='1.0' encoding='UTF-8'?>
<project>
  <keepDependencies>false</keepDependencies>
  <properties/>
  <scm class='jenkins.scm.NullSCM'/>
  <canRoam>true</canRoam>
  <disabled>false</disabled>
  <blockBuildWhenUpstreamBuilding>false</blockBuildWhenUpstreamBuilding>
  <triggers class='vector'/>
  <concurrentBuild>false</concurrentBuild>
  <builders>
    <jenkins.tasks.Shell>
      <command>export FOO=bar</command>
    </jenkins.tasks.Shell>
  </builders>
  <publishers/>
  <buildWrappers/>
</project>'''

# for testing only
EMPTY_VIEW_CONFIG_XML = '''<?xml version="1.0" encoding="UTF-8"?>
<hudson.model.ListView>
  <name>EMPTY</name>
  <filterExecutors>false</filterExecutors>
  <filterQueue>false</filterQueue>
  <properties class="hudson.model.View$PropertyList"/>
  <jobNames>
    <comparator class="hudson.util.CaseInsensitiveComparator"/>
  </jobNames>
  <jobFilters/>
  <columns>
    <hudson.views.StatusColumn/>
    <hudson.views.WeatherColumn/>
    <hudson.views.JobColumn/>
    <hudson.views.LastSuccessColumn/>
    <hudson.views.LastFailureColumn/>
    <hudson.views.LastDurationColumn/>
    <hudson.views.BuildButtonColumn/>
  </columns>
</hudson.model.ListView>'''

# for testing only
EMPTY_PROMO_CONFIG_XML = '''<?xml version='1.0' encoding='UTF-8'?>
<hudson.plugins.promoted__builds.PromotionProcess>
  <properties/>
  <scm class="hudson.scm.NullSCM"/>
  <canRoam>false</canRoam>
  <triggers/>
  <conditions/>
  <icon>star-gold</icon>
  <buildSteps/>
</hudson.plugins.promoted__builds.PromotionProcess>'''

# for testing only
PROMO_RECONFIG_XML = '''<?xml version='1.0' encoding='UTF-8'?>
<hudson.plugins.promoted__builds.PromotionProcess>
  <keepDependencies>false</keepDependencies>
  <properties/>
  <scm class="hudson.scm.NullSCM"/>
  <triggers/>
  <icon>star-green</icon>
  <buildSteps>
    <hudson.tasks.Shell>
      <command>ls -l</command>
    </hudson.tasks.Shell>
  </buildSteps>
</hudson.plugins.promoted__builds.PromotionProcess>
'''


class JenkinsException(Exception):
    '''General exception type for jenkins-API-related failures.'''
    pass


class NotFoundException(JenkinsException):
    '''A special exception to call out the case of receiving a 404.'''
    pass


class EmptyResponseException(JenkinsException):
    '''A special exception to call out the case receiving an empty response.'''
    pass


class BadHTTPException(JenkinsException):
    '''A special exception to call out the case of a broken HTTP response.'''
    pass


class TimeoutException(JenkinsException):
    '''A special exception to call out in the case of a socket timeout.'''


def auth_headers(username, password):
    '''Simple implementation of HTTP Basic Authentication.

    Returns the 'Authentication' header value.
    '''
    auth = '%s:%s' % (username, password)
    if isinstance(auth, six.text_type):
        auth = auth.encode('utf-8')
    return b'Basic ' + base64.b64encode(auth)


class Jenkins(object):

    def __init__(self, url, username=None, password=None,
                 timeout=socket._GLOBAL_DEFAULT_TIMEOUT):
        '''Create handle to Jenkins instance.

        All methods will raise :class:`JenkinsException` on failure.

        :param username: Server username, ``str``
        :param password: Server password, ``str``
        :param url: URL of Jenkins server, ``str``
        :param timeout: Server connection timeout in secs (default: not set), ``int``
        '''
        if url[-1] == '/':
            self.server = url
        else:
            self.server = url + '/'
        if username is not None and password is not None:
            self.auth = auth_headers(username, password)
        else:
            self.auth = None
        self.crumb = None
        self.timeout = timeout

    def _get_encoded_params(self, params):
        for k, v in params.items():
            if k in ["name", "msg", "short_name", "from_short_name",
                     "to_short_name", "folder_url", "from_folder_url", "to_folder_url"]:
                params[k] = quote(v)
        return params

    def _build_url(self, format_spec, variables=None):

        if variables:
            if format_spec == CREATE_NODE:
                url_path = format_spec % urlencode(self._get_encoded_params(variables))
            else:
                url_path = format_spec % self._get_encoded_params(variables)
        else:
            url_path = format_spec

        return urljoin(self.server, url_path)

    def maybe_add_crumb(self, req):
        # We don't know yet whether we need a crumb
        if self.crumb is None:
            try:
                response = self.jenkins_open(Request(
                    self._build_url(CRUMB_URL)), add_crumb=False)
            except (NotFoundException, EmptyResponseException):
                self.crumb = False
            else:
                self.crumb = json.loads(response)
        if self.crumb:
            req.add_header(self.crumb['crumbRequestField'], self.crumb['crumb'])

    def get_job_info(self, name, depth=0):
        '''Get job information dictionary.

        :param name: Job name, ``str``
        :param depth: JSON depth, ``int``
        :returns: dictionary of job information
        '''
        folder_url, short_name = self._get_job_folder(name)
        try:
            response = self.jenkins_open(Request(
                self._build_url(JOB_INFO, locals())
            ))
            if response:
                return json.loads(response)
            else:
                raise JenkinsException('job[%s] does not exist' % name)
        except HTTPError:
            raise JenkinsException('job[%s] does not exist' % name)
        except ValueError:
            raise JenkinsException(
                "Could not parse JSON info for job[%s]" % name)

    def get_job_info_regex(self, pattern, depth=0, folder_depth=0):
        '''Get a list of jobs information that contain names which match the
           regex pattern.

        :param pattern: regex pattern, ``str``
        :param depth: JSON depth, ``int``
        :param folder_depth: folder level depth to search ``int``
        :returns: List of jobs info, ``list``
        '''
        result = []
        jobs = self.get_all_jobs(folder_depth)
        for job in jobs:
            if re.search(pattern, job['name']):
                result.append(self.get_job_info(job['name'], depth=depth))

        return result

    def get_job_name(self, name):
        '''Return the name of a job using the API.

        That is roughly an identity method which can be used to quickly verify
        a job exist or is accessible without causing too much stress on the
        server side.

        :param name: Job name, ``str``
        :returns: Name of job or None
        '''
        folder_url, short_name = self._get_job_folder(name)
        try:
            response = self.jenkins_open(Request(
                self._build_url(JOB_NAME, locals())
            ))
        except NotFoundException:
            return None
        else:
            actual = json.loads(response)['name']
            if actual != short_name:
                raise JenkinsException(
                    'Jenkins returned an unexpected job name %s '
                    '(expected: %s)' % (actual, name))
            return actual

    def debug_job_info(self, job_name):
        '''Print out job info in more readable format.'''
        for k, v in self.get_job_info(job_name).items():
            print(k, v)

    def jenkins_open(self, req, add_crumb=True):
        '''Utility routine for opening an HTTP request to a Jenkins server.

        This should only be used to extends the :class:`Jenkins` API.
        '''
        try:
            if self.auth:
                req.add_header('Authorization', self.auth)
            if add_crumb:
                self.maybe_add_crumb(req)
            response = urlopen(req, timeout=self.timeout).read()
            if response is None:
                raise EmptyResponseException(
                    "Error communicating with server[%s]: "
                    "empty response" % self.server)
            return response.decode('utf-8')
        except HTTPError as e:
            # Jenkins's funky authentication means its nigh impossible to
            # distinguish errors.
            if e.code in [401, 403, 500]:
                # six.moves.urllib.error.HTTPError provides a 'reason'
                # attribute for all python version except for ver 2.6
                # Falling back to HTTPError.msg since it contains the
                # same info as reason
                raise JenkinsException(
                    'Error in request. ' +
                    'Possibly authentication failed [%s]: %s' % (
                        e.code, e.msg)
                )
            elif e.code == 404:
                raise NotFoundException('Requested item could not be found')
            else:
                raise
        except socket.timeout as e:
            raise TimeoutException('Error in request: %s' % (e))
        except URLError as e:
            # python 2.6 compatibility to ensure same exception raised
            # since URLError wraps a socket timeout on python 2.6.
            if str(e.reason) == "timed out":
                raise TimeoutException('Error in request: %s' % (e.reason))
            raise JenkinsException('Error in request: %s' % (e.reason))

    def get_build_info(self, name, number, depth=0):
        '''Get build information dictionary.

        :param name: Job name, ``str``
        :param name: Build number, ``int``
        :param depth: JSON depth, ``int``
        :returns: dictionary of build information, ``dict``

        Example::

            >>> next_build_number = server.get_job_info('build_name')['nextBuildNumber']
            >>> output = server.build_job('build_name')
            >>> from time import sleep; sleep(10)
            >>> build_info = server.get_build_info('build_name', next_build_number)
            >>> print(build_info)
            {u'building': False, u'changeSet': {u'items': [{u'date': u'2011-12-19T18:01:52.540557Z', u'msg': u'test', u'revision': 66, u'user': u'unknown', u'paths': [{u'editType': u'edit', u'file': u'/branches/demo/index.html'}]}], u'kind': u'svn', u'revisions': [{u'module': u'http://eaas-svn01.i3.level3.com/eaas', u'revision': 66}]}, u'builtOn': u'', u'description': None, u'artifacts': [{u'relativePath': u'dist/eaas-87-2011-12-19_18-01-57.war', u'displayPath': u'eaas-87-2011-12-19_18-01-57.war', u'fileName': u'eaas-87-2011-12-19_18-01-57.war'}, {u'relativePath': u'dist/eaas-87-2011-12-19_18-01-57.war.zip', u'displayPath': u'eaas-87-2011-12-19_18-01-57.war.zip', u'fileName': u'eaas-87-2011-12-19_18-01-57.war.zip'}], u'timestamp': 1324317717000, u'number': 87, u'actions': [{u'parameters': [{u'name': u'SERVICE_NAME', u'value': u'eaas'}, {u'name': u'PROJECT_NAME', u'value': u'demo'}]}, {u'causes': [{u'userName': u'anonymous', u'shortDescription': u'Started by user anonymous'}]}, {}, {}, {}], u'id': u'2011-12-19_18-01-57', u'keepLog': False, u'url': u'http://eaas-jenkins01.i3.level3.com:9080/job/build_war/87/', u'culprits': [{u'absoluteUrl': u'http://eaas-jenkins01.i3.level3.com:9080/user/unknown', u'fullName': u'unknown'}], u'result': u'SUCCESS', u'duration': 8826, u'fullDisplayName': u'build_war #87'}
        '''
        folder_url, short_name = self._get_job_folder(name)
        try:
            response = self.jenkins_open(Request(
                self._build_url(BUILD_INFO, locals())
            ))
            if response:
                return json.loads(response)
            else:
                raise JenkinsException('job[%s] number[%d] does not exist'
                                       % (name, number))
        except HTTPError:
            raise JenkinsException('job[%s] number[%d] does not exist'
                                   % (name, number))
        except ValueError:
            raise JenkinsException(
                'Could not parse JSON info for job[%s] number[%d]'
                % (name, number)
            )

    def get_queue_info(self):
        ''':returns: list of job dictionaries, ``[dict]``

        Example::
            >>> queue_info = server.get_queue_info()
            >>> print(queue_info[0])
            {u'task': {u'url': u'http://your_url/job/my_job/', u'color': u'aborted_anime', u'name': u'my_job'}, u'stuck': False, u'actions': [{u'causes': [{u'shortDescription': u'Started by timer'}]}], u'buildable': False, u'params': u'', u'buildableStartMilliseconds': 1315087293316, u'why': u'Build #2,532 is already in progress (ETA:10 min)', u'blocked': True}
        '''
        return json.loads(self.jenkins_open(
            Request(self._build_url(Q_INFO))
        ))['items']

    def cancel_queue(self, id):
        '''Cancel a queued build.

        :param id: Jenkins job id number for the build, ``int``
        '''
        # Jenkins seems to always return a 404 when using this REST endpoint
        # https://issues.jenkins-ci.org/browse/JENKINS-21311
        try:
            self.jenkins_open(
                Request(self._build_url(CANCEL_QUEUE, locals()), b'',
                        headers={'Referer': self.server}))
        except NotFoundException:
            # Exception is expected; cancel_queue() is a best-effort
            # mechanism, so ignore it
            pass

    def get_info(self, item="", query=None):
        """Get information on this Master or item on Master.

        This information includes job list and view information and can be
        used to retreive information on items such as job folders.

        :param item: item to get information about on this Master
        :param query: xpath to extract information about on this Master
        :returns: dictionary of information about Master or item, ``dict``

        Example::

            >>> info = server.get_info()
            >>> jobs = info['jobs']
            >>> print(jobs[0])
            {u'url': u'http://your_url_here/job/my_job/', u'color': u'blue',
            u'name': u'my_job'}

        """
        url = '/'.join((item, INFO)).lstrip('/')
        if query:
            url += query
        try:
            return json.loads(self.jenkins_open(
                Request(self._build_url(url))
            ))
        except (HTTPError, BadStatusLine):
            raise BadHTTPException("Error communicating with server[%s]"
                                   % self.server)
        except ValueError:
            raise JenkinsException("Could not parse JSON info for server[%s]"
                                   % self.server)

    def get_whoami(self):
        """Get information about the user account that authenticated to
        Jenkins. This is a simple way to verify that your credentials are
        correct.

        :returns: Information about the current user ``dict``

        Example::

            >>> me = server.get_whoami()
            >>> print me['fullName']
            >>> 'John'

        """
        try:
            response = self.jenkins_open(Request(self._build_url(WHOAMI_URL)))
            if response is None:
                raise EmptyResponseException(
                    "Error communicating with server[%s]: "
                    "empty response" % self.server)

            return json.loads(response)

        except (HTTPError, BadStatusLine):
            raise BadHTTPException("Error communicating with server[%s]"
                                   % self.server)

    def get_version(self):
        """Get the version of this Master.

        :returns: This master's version number ``str``

        Example::

            >>> info = server.get_version()
            >>> print info
            >>> 1.541

        """
        try:
            request = Request(self._build_url(''))
            request.add_header('X-Jenkins', '0.0')
            response = urlopen(request, timeout=self.timeout)
            if response is None:
                raise EmptyResponseException(
                    "Error communicating with server[%s]: "
                    "empty response" % self.server)

            if six.PY2:
                return response.info().getheader('X-Jenkins')

            if six.PY3:
                return response.getheader('X-Jenkins')

        except (HTTPError, BadStatusLine):
            raise BadHTTPException("Error communicating with server[%s]"
                                   % self.server)

    def get_plugins_info(self, depth=2):
        """Get all installed plugins information on this Master.

        This method retrieves information about each plugin that is installed
        on master returning the raw plugin data in a JSON format.

        .. deprecated:: 0.4.9
           Use :func:`get_plugins` instead.

        :param depth: JSON depth, ``int``
        :returns: info on all plugins ``[dict]``

        Example::

            >>> info = server.get_plugins_info()
            >>> print(info)
            [{u'backupVersion': None, u'version': u'0.0.4', u'deleted': False,
            u'supportsDynamicLoad': u'MAYBE', u'hasUpdate': True,
            u'enabled': True, u'pinned': False, u'downgradable': False,
            u'dependencies': [], u'url':
            u'http://wiki.jenkins-ci.org/display/JENKINS/Gearman+Plugin',
            u'longName': u'Gearman Plugin', u'active': True, u'shortName':
            u'gearman-plugin', u'bundled': False}, ..]

        """
        warnings.warn("get_plugins_info() is deprecated, use get_plugins()",
                      DeprecationWarning)
        return [plugin_data for plugin_data in self.get_plugins(depth).values()]

    def get_plugin_info(self, name, depth=2):
        """Get an installed plugin information on this Master.

        This method retrieves information about a specific plugin and returns
        the raw plugin data in a JSON format.
        The passed in plugin name (short or long) must be an exact match.

        .. note:: Calling this method will query Jenkins fresh for the
            information for all plugins on each call. If you need to retrieve
            information for multiple plugins it's recommended to use
            :func:`get_plugins` instead, which will return a multi key
            dictionary that can be accessed via either the short or long name
            of the plugin.

        :param name: Name (short or long) of plugin, ``str``
        :param depth: JSON depth, ``int``
        :returns: a specific plugin ``dict``

        Example::

            >>> info = server.get_plugin_info("Gearman Plugin")
            >>> print(info)
            {u'backupVersion': None, u'version': u'0.0.4', u'deleted': False,
            u'supportsDynamicLoad': u'MAYBE', u'hasUpdate': True,
            u'enabled': True, u'pinned': False, u'downgradable': False,
            u'dependencies': [], u'url':
            u'http://wiki.jenkins-ci.org/display/JENKINS/Gearman+Plugin',
            u'longName': u'Gearman Plugin', u'active': True, u'shortName':
            u'gearman-plugin', u'bundled': False}

        """
        plugins_info = self.get_plugins(depth)
        try:
            return plugins_info[name]
        except KeyError:
            pass

    def get_plugins(self, depth=2):
        """Return plugins info using helper class for version comparison

        This method retrieves information about all the installed plugins and
        uses a Plugin helper class to simplify version comparison. Also uses
        a multi key dict to allow retrieval via either short or long names.

        When printing/dumping the data, the version will transparently return
        a unicode string, which is exactly what was previously returned by the
        API.

        :param depth: JSON depth, ``int``
        :returns: info on all plugins ``[dict]``

        Example::

            >>> j = Jenkins()
            >>> info = j.get_plugins()
            >>> print(info)
            {('gearman-plugin', 'Gearman Plugin'):
              {u'backupVersion': None, u'version': u'0.0.4',
               u'deleted': False, u'supportsDynamicLoad': u'MAYBE',
               u'hasUpdate': True, u'enabled': True, u'pinned': False,
               u'downgradable': False, u'dependencies': [], u'url':
               u'http://wiki.jenkins-ci.org/display/JENKINS/Gearman+Plugin',
               u'longName': u'Gearman Plugin', u'active': True, u'shortName':
               u'gearman-plugin', u'bundled': False}, ...}

        """

        try:
            plugins_info_json = json.loads(self.jenkins_open(
                Request(self._build_url(PLUGIN_INFO, locals()))))
        except (HTTPError, BadStatusLine):
            raise BadHTTPException("Error communicating with server[%s]"
                                   % self.server)
        except ValueError:
            raise JenkinsException("Could not parse JSON info for server[%s]"
                                   % self.server)

        plugins_data = multi_key_dict.multi_key_dict()
        for plugin_data in plugins_info_json['plugins']:
            keys = (str(plugin_data['shortName']), str(plugin_data['longName']))
            plugins_data[keys] = plugins.Plugin(**plugin_data)

        return plugins_data

    def get_jobs(self, folder_depth=0, view_name=None):
        """Get list of jobs.

        Each job is a dictionary with 'name', 'url', 'color' and 'fullname'
        keys.

        If the ``view_name`` parameter is present, the list of
        jobs will be limited to only those configured in the
        specified view. In this case, the job dictionary 'fullname' key
        would be equal to the job name.

        :param folder_depth: Number of levels to search, ``int``. By default
            0, which will limit search to toplevel. None disables the limit.
        :param view_name: Name of a Jenkins view for which to
            retrieve jobs, ``str``. By default, the job list is
            not limited to a specific view.
        :returns: list of jobs, ``[{str: str, str: str, str: str, str: str}]``

        Example::

            >>> jobs = server.get_jobs()
            >>> print(jobs)
            [{
                u'name': u'all_tests',
                u'url': u'http://your_url.here/job/all_tests/',
                u'color': u'blue',
                u'fullname': u'all_tests'
            }]

        """

        if view_name:
            return self._get_view_jobs(view_name=view_name)
        else:
            return self.get_all_jobs(folder_depth=folder_depth)

    def get_all_jobs(self, folder_depth=None):
        """Get list of all jobs recursively to the given folder depth.

        Each job is a dictionary with 'name', 'url', 'color' and 'fullname'
        keys.

        :param folder_depth: Number of levels to search, ``int``. By default
            None, which will search all levels. 0 limits to toplevel.
        :returns: list of jobs, ``[ { str: str} ]``

        .. note::

            On instances with many folders it may be more efficient to use the
            run_script method to retrieve all jobs instead.

            Example::

                server.run_script(\"\"\"
                    import groovy.json.JsonBuilder;

                    // get all projects excluding matrix configuration
                    // as they are simply part of a matrix project.
                    // there may be better ways to get just jobs
                    items = Jenkins.instance.getAllItems(AbstractProject);
                    items.removeAll {
                      it instanceof hudson.matrix.MatrixConfiguration
                    };

                    def json = new JsonBuilder()
                    def root = json {
                      jobs items.collect {
                        [
                          name: it.name,
                          url: Jenkins.instance.getRootUrl() + it.getUrl(),
                          color: it.getIconColor().toString(),
                          fullname: it.getFullName()
                        ]
                      }
                    }

                    // use json.toPrettyString() if viewing
                    println json.toString()
                    \"\"\")

        """
        jobs_list = []

        jobs = [(0, "", self.get_info(query=JOBS_QUERY)['jobs'])]
        for lvl, root, lvl_jobs in jobs:
            if not isinstance(lvl_jobs, list):
                lvl_jobs = [lvl_jobs]
            for job in lvl_jobs:
                if 'jobs' in job:  # folder
                    if folder_depth is None or lvl < folder_depth:
                        path = '/job/'.join((root, job[u'name']))
                        jobs.append(
                            (lvl + 1, path,
                             self.get_info(path,
                                           query=JOBS_QUERY)['jobs']))
                else:
                    # insert fullname info if it doesn't exist to
                    # allow callers to easily reference unambiguously
                    if u'fullname' not in job:
                        job[u'fullname'] = '/'.join(
                            [p for p in root.split('/')
                             if p and p != 'job'] +
                            [job[u'name']])
                    jobs_list.append(job)
        return jobs_list

    def copy_job(self, from_name, to_name):
        '''Copy a Jenkins job.

        Will raise an exception whenever the source and destination folder
        for this jobs won't be the same.

        :param from_name: Name of Jenkins job to copy from, ``str``
        :param to_name: Name of Jenkins job to copy to, ``str``
        :throws: :class:`JenkinsException` whenever the source and destination
            folder are not the same
        '''
        from_folder_url, from_short_name = self._get_job_folder(from_name)
        to_folder_url, to_short_name = self._get_job_folder(to_name)
        if from_folder_url != to_folder_url:
            raise JenkinsException('copy[%s to %s] failed, source and destination '
                                   'folder must be the same' % (from_name, to_name))

        self.jenkins_open(Request(
            self._build_url(COPY_JOB, locals()), b''))
        self.assert_job_exists(to_name, 'create[%s] failed')

    def rename_job(self, from_name, to_name):
        '''Rename an existing Jenkins job

        Will raise an exception whenever the source and destination folder
        for this jobs won't be the same.

        :param from_name: Name of Jenkins job to rename, ``str``
        :param to_name: New Jenkins job name, ``str``
        :throws: :class:`JenkinsException` whenever the source and destination
            folder are not the same
        '''
        from_folder_url, from_short_name = self._get_job_folder(from_name)
        to_folder_url, to_short_name = self._get_job_folder(to_name)
        if from_folder_url != to_folder_url:
            raise JenkinsException('rename[%s to %s] failed, source and destination folder '
                                   'must be the same' % (from_name, to_name))
        self.jenkins_open(Request(
            self._build_url(RENAME_JOB, locals()), b''))
        self.assert_job_exists(to_name, 'rename[%s] failed')

    def delete_job(self, name):
        '''Delete Jenkins job permanently.

        :param name: Name of Jenkins job, ``str``
        '''
        folder_url, short_name = self._get_job_folder(name)
        self.jenkins_open(Request(
            self._build_url(DELETE_JOB, locals()), b''))
        if self.job_exists(name):
            raise JenkinsException('delete[%s] failed' % (name))

    def enable_job(self, name):
        '''Enable Jenkins job.

        :param name: Name of Jenkins job, ``str``
        '''
        folder_url, short_name = self._get_job_folder(name)
        self.jenkins_open(Request(
            self._build_url(ENABLE_JOB, locals()), b''))

    def disable_job(self, name):
        '''Disable Jenkins job.

        To re-enable, call :meth:`Jenkins.enable_job`.

        :param name: Name of Jenkins job, ``str``
        '''
        folder_url, short_name = self._get_job_folder(name)
        self.jenkins_open(Request(
            self._build_url(DISABLE_JOB, locals()), b''))

    def set_next_build_number(self, name, number):
        '''Set a job's next build number.

        The current next build number is contained within the job
        information retrieved using :meth:`Jenkins.get_job_info`.  If
        the specified next build number is less than the last build
        number, Jenkins will ignore the request.

        Note that the `Next Build Number Plugin
        <https://wiki.jenkins-ci.org/display/JENKINS/Next+Build+Number+Plugin>`_
        must be installed to enable this functionality.

        :param name: Name of Jenkins job, ``str``
        :param number: Next build number to set, ``int``

        Example::

            >>> next_bn = server.get_job_info('job_name')['nextBuildNumber']
            >>> server.set_next_build_number('job_name', next_bn + 50)
        '''
        folder_url, short_name = self._get_job_folder(name)
        self.jenkins_open(
            Request(self._build_url(SET_JOB_BUILD_NUMBER, locals()),
                    ("nextBuildNumber=%d" % number).encode('utf-8')))

    def job_exists(self, name):
        '''Check whether a job exists

        :param name: Name of Jenkins job, ``str``
        :returns: ``True`` if Jenkins job exists
        '''
        folder_url, short_name = self._get_job_folder(name)
        if self.get_job_name(name) == short_name:
            return True

    def jobs_count(self):
        '''Get the number of jobs on the Jenkins server

        :returns: Total number of jobs, ``int``

        .. note::

            On instances with many folders it may be more efficient to use the
            run_script method to retrieve the total number of jobs instead.

            Example::

                # get all projects excluding matrix configuration
                # as they are simply part of a matrix project.
                server.run_script(
                    "print(Hudson.instance.getAllItems("
                    "    hudson.model.AbstractProject).count{"
                    "        !(it instanceof hudson.matrix.MatrixConfiguration)"
                    "    })")

        '''
        return len(self.get_all_jobs())

    def assert_job_exists(self, name,
                          exception_message='job[%s] does not exist'):
        '''Raise an exception if a job does not exist

        :param name: Name of Jenkins job, ``str``
        :param exception_message: Message to use for the exception. Formatted
                                  with ``name``
        :throws: :class:`JenkinsException` whenever the job does not exist
        '''
        if not self.job_exists(name):
            raise JenkinsException(exception_message % name)

    def create_job(self, name, config_xml):
        '''Create a new Jenkins job

        :param name: Name of Jenkins job, ``str``
        :param config_xml: config file text, ``str``
        '''
        folder_url, short_name = self._get_job_folder(name)
        if self.job_exists(name):
            raise JenkinsException('job[%s] already exists' % (name))

        try:
            self.jenkins_open(Request(
                self._build_url(CREATE_JOB, locals()),
                config_xml.encode('utf-8'), DEFAULT_HEADERS))
        except NotFoundException:
            raise JenkinsException('Cannot create job[%s] because folder '
                                   'for the job does not exist' % (name))
        self.assert_job_exists(name, 'create[%s] failed')

    def get_job_config(self, name):
        '''Get configuration of existing Jenkins job.

        :param name: Name of Jenkins job, ``str``
        :returns: job configuration (XML format)
        '''
        folder_url, short_name = self._get_job_folder(name)
        request = Request(self._build_url(CONFIG_JOB, locals()))
        return self.jenkins_open(request)

    def reconfig_job(self, name, config_xml):
        '''Change configuration of existing Jenkins job.

        To create a new job, see :meth:`Jenkins.create_job`.

        :param name: Name of Jenkins job, ``str``
        :param config_xml: New XML configuration, ``str``
        '''
        folder_url, short_name = self._get_job_folder(name)
        reconfig_url = self._build_url(CONFIG_JOB, locals())
        self.jenkins_open(Request(reconfig_url, config_xml.encode('utf-8'),
                                  DEFAULT_HEADERS))

    def build_job_url(self, name, parameters=None, token=None):
        '''Get URL to trigger build job.

        Authenticated setups may require configuring a token on the server
        side.

        :param parameters: parameters for job, or None., ``dict``
        :param token: (optional) token for building job, ``str``
        :returns: URL for building job
        '''
        folder_url, short_name = self._get_job_folder(name)
        if parameters:
            if token:
                parameters['token'] = token
            return (self._build_url(BUILD_WITH_PARAMS_JOB, locals()) +
                    '?' + urlencode(parameters))
        elif token:
            return (self._build_url(BUILD_JOB, locals()) +
                    '?' + urlencode({'token': token}))
        else:
            return self._build_url(BUILD_JOB, locals())

    def build_job(self, name, parameters=None, token=None):
        '''Trigger build job.

        :param name: name of job
        :param parameters: parameters for job, or ``None``, ``dict``
        :param token: Jenkins API token
        '''
        return self.jenkins_open(Request(
            self.build_job_url(name, parameters, token), b''))

    def run_script(self, script):
        '''Execute a groovy script on the jenkins master.

        :param script: The groovy script, ``string``
        :returns: The result of the script run.

        Example::
            >>> info = server.run_script("println(Jenkins.instance.pluginManager.plugins)")
            >>> print(info)
            u'[Plugin:windows-slaves, Plugin:ssh-slaves, Plugin:translation,
            Plugin:cvs, Plugin:nodelabelparameter, Plugin:external-monitor-job,
            Plugin:mailer, Plugin:jquery, Plugin:antisamy-markup-formatter,
            Plugin:maven-plugin, Plugin:pam-auth]'
        '''
        return self.jenkins_open(Request(self._build_url(SCRIPT_TEXT),
                                         "script=".encode('utf-8') + script.encode('utf-8')))

    def install_plugin(self, name, include_dependencies=True):
        '''Install a plugin and its dependencies from the Jenkins public
        repository at http://repo.jenkins-ci.org/repo/org/jenkins-ci/plugins

        :param name: The plugin short name, ``string``
        :param include_dependencies: Install the plugin's dependencies, ``bool``
        :returns: Whether a Jenkins restart is required, ``bool``

        Example::
            >>> info = server.install_plugin("jabber")
            >>> print(info)
            True
        '''
        # using a groovy script because Jenkins does not provide a REST endpoint
        # for installing plugins.
        install = ('Jenkins.instance.updateCenter.getPlugin(\"' + name + '\")'
                   '.deploy();')
        if include_dependencies:
            install = ('Jenkins.instance.updateCenter.getPlugin(\"' + name + '\")'
                       '.getNeededDependencies().each{it.deploy()};') + install

        self.run_script(install)
        # run_script is an async call to run groovy. we need to wait a little
        # before we can get a reliable response on whether a restart is needed
        time.sleep(2)
        is_restart_required = ('Jenkins.instance.updateCenter'
                               '.isRestartRequiredForCompletion()')

        # response is a string (i.e. u'Result: true\n'), return a bool instead
        response_str = self.run_script(is_restart_required)
        response = response_str.split(':')[1].strip().lower() == 'true'
        return response

    def stop_build(self, name, number):
        '''Stop a running Jenkins build.

        :param name: Name of Jenkins job, ``str``
        :param number: Jenkins build number for the job, ``int``
        '''
        folder_url, short_name = self._get_job_folder(name)
        self.jenkins_open(Request(
            self._build_url(STOP_BUILD, locals()), b''))

    def get_running_builds(self):
        '''Return list of running builds.

        Each build is a dict with keys 'name', 'number', 'url', 'node',
        and 'executor'.

        :returns: List of builds,
          ``[ { str: str, str: int, str:str, str: str, str: int} ]``

        Example::
            >>> builds = server.get_running_builds()
            >>> print(builds)
            [{'node': 'foo-slave', 'url': 'https://localhost/job/test/15/',
              'executor': 0, 'name': 'test', 'number': 15}]
        '''
        builds = []
        nodes = self.get_nodes()
        for node in nodes:
            # the name returned is not the name to lookup when
            # dealing with master :/
            if node['name'] == 'master':
                node_name = '(master)'
            else:
                node_name = node['name']
            try:
                info = self.get_node_info(node_name, depth=2)
            except JenkinsException as e:
                # Jenkins may 500 on depth >0. If the node info comes back
                # at depth 0 treat it as a node not running any jobs.
                if ('[500]' in str(e) and
                        self.get_node_info(node_name, depth=0)):
                    continue
                else:
                    raise
            for executor in info['executors']:
                executable = executor['currentExecutable']
                if executable:
                    executor_number = executor['number']
                    build_number = executable['number']
                    url = executable['url']
                    m = re.match(r'/job/([^/]+)/.*', urlparse(url).path)
                    job_name = m.group(1)
                    builds.append({'name': job_name,
                                   'number': build_number,
                                   'url': url,
                                   'node': node_name,
                                   'executor': executor_number})
        return builds

    def get_nodes(self):
        '''Get a list of nodes connected to the Master

        Each node is a dict with keys 'name' and 'offline'

        :returns: List of nodes, ``[ { str: str, str: bool} ]``
        '''
        try:
            nodes_data = json.loads(self.jenkins_open(Request(self._build_url(NODE_LIST))))
            return [{'name': c["displayName"], 'offline': c["offline"]}
                    for c in nodes_data["computer"]]
        except (HTTPError, BadStatusLine):
            raise BadHTTPException("Error communicating with server[%s]"
                                   % self.server)
        except ValueError:
            raise JenkinsException("Could not parse JSON info for server[%s]"
                                   % self.server)

    def get_node_info(self, name, depth=0):
        '''Get node information dictionary

        :param name: Node name, ``str``
        :param depth: JSON depth, ``int``
        :returns: Dictionary of node info, ``dict``
        '''
        try:
            response = self.jenkins_open(Request(
                self._build_url(NODE_INFO, locals())))
            if response:
                return json.loads(response)
            else:
                raise JenkinsException('node[%s] does not exist' % name)
        except HTTPError:
            raise JenkinsException('node[%s] does not exist' % name)
        except ValueError:
            raise JenkinsException("Could not parse JSON info for node[%s]"
                                   % name)

    def node_exists(self, name):
        '''Check whether a node exists

        :param name: Name of Jenkins node, ``str``
        :returns: ``True`` if Jenkins node exists
        '''
        try:
            self.get_node_info(name)
            return True
        except JenkinsException:
            return False

    def assert_node_exists(self, name,
                           exception_message='node[%s] does not exist'):
        '''Raise an exception if a node does not exist

        :param name: Name of Jenkins node, ``str``
        :param exception_message: Message to use for the exception. Formatted
                                  with ``name``
        :throws: :class:`JenkinsException` whenever the node does not exist
        '''
        if not self.node_exists(name):
            raise JenkinsException(exception_message % name)

    def delete_node(self, name):
        '''Delete Jenkins node permanently.

        :param name: Name of Jenkins node, ``str``
        '''
        self.get_node_info(name)
        self.jenkins_open(Request(
            self._build_url(DELETE_NODE, locals()), b''))
        if self.node_exists(name):
            raise JenkinsException('delete[%s] failed' % (name))

    def disable_node(self, name, msg=''):
        '''Disable a node

        :param name: Jenkins node name, ``str``
        :param msg: Offline message, ``str``
        '''
        info = self.get_node_info(name)
        if info['offline']:
            return
        self.jenkins_open(Request(
            self._build_url(TOGGLE_OFFLINE, locals()), b''))

    def enable_node(self, name):
        '''Enable a node

        :param name: Jenkins node name, ``str``
        '''
        info = self.get_node_info(name)
        if not info['offline']:
            return
        msg = ''
        self.jenkins_open(Request(
            self._build_url(TOGGLE_OFFLINE, locals()), b''))

    def create_node(self, name, numExecutors=2, nodeDescription=None,
                    remoteFS='/var/lib/jenkins', labels=None, exclusive=False,
                    launcher=LAUNCHER_COMMAND, launcher_params={}):
        '''Create a node

        :param name: name of node to create, ``str``
        :param numExecutors: number of executors for node, ``int``
        :param nodeDescription: Description of node, ``str``
        :param remoteFS: Remote filesystem location to use, ``str``
        :param labels: Labels to associate with node, ``str``
        :param exclusive: Use this node for tied jobs only, ``bool``
        :param launcher: The launch method for the slave, ``jenkins.LAUNCHER_COMMAND``, ``jenkins.LAUNCHER_SSH``, ``jenkins.LAUNCHER_JNLP``, ``jenkins.LAUNCHER_WINDOWS_SERVICE``
        :param launcher_params: Additional parameters for the launcher, ``dict``
        '''
        if self.node_exists(name):
            raise JenkinsException('node[%s] already exists' % (name))

        mode = 'NORMAL'
        if exclusive:
            mode = 'EXCLUSIVE'

        launcher_params['stapler-class'] = launcher

        inner_params = {
            'name': name,
            'nodeDescription': nodeDescription,
            'numExecutors': numExecutors,
            'remoteFS': remoteFS,
            'labelString': labels,
            'mode': mode,
            'type': NODE_TYPE,
            'retentionStrategy': {
                'stapler-class':
                'hudson.slaves.RetentionStrategy$Always'
            },
            'nodeProperties': {'stapler-class-bag': 'true'},
            'launcher': launcher_params
        }

        params = {
            'name': name,
            'type': NODE_TYPE,
            'json': json.dumps(inner_params)
        }

        self.jenkins_open(Request(
            self._build_url(CREATE_NODE, params), b''))

        self.assert_node_exists(name, 'create[%s] failed')

    def get_node_config(self, name):
        '''Get the configuration for a node.

        :param name: Jenkins node name, ``str``
        '''
        get_config_url = self._build_url(CONFIG_NODE, locals())
        return self.jenkins_open(Request(get_config_url))

    def reconfig_node(self, name, config_xml):
        '''Change the configuration for an existing node.

        :param name: Jenkins node name, ``str``
        :param config_xml: New XML configuration, ``str``
        '''
        reconfig_url = self._build_url(CONFIG_NODE, locals())
        self.jenkins_open(Request(reconfig_url, config_xml.encode('utf-8'), DEFAULT_HEADERS))

    def get_build_console_output(self, name, number):
        '''Get build console text.

        :param name: Job name, ``str``
        :param name: Build number, ``int``
        :returns: Build console output,  ``str``
        '''
        folder_url, short_name = self._get_job_folder(name)
        try:
            response = self.jenkins_open(Request(
                self._build_url(BUILD_CONSOLE_OUTPUT, locals())
            ))
            if response:
                return response
            else:
                raise JenkinsException('job[%s] number[%d] does not exist'
                                       % (name, number))
        except HTTPError:
            raise JenkinsException('job[%s] number[%d] does not exist'
                                   % (name, number))

    def _get_job_folder(self, name):
        '''Return the name and folder (see cloudbees plugin).

        This is a method to support cloudbees folder plugin.
        Url request should take into account folder path when the job name specify it
        (ex.: 'folder/job')

        :param name: Job name, ``str``
        :returns: Tuple [ 'folder path for Request', 'Name of job without folder path' ]
        '''

        a_path = name.split('/')
        short_name = a_path[-1]
        folder_url = (('job/' + '/job/'.join(a_path[:-1]) + '/')
                      if len(a_path) > 1 else '')

        return folder_url, short_name

    def _get_view_jobs(self, view_name):
        '''Get list of jobs on the view specified.

        Each job is a dictionary with 'name', 'url', 'color' and 'fullname'
        keys.

        The list of jobs is limited to only those configured in the
        specified view. Each job dictionary 'fullname' key
        is equal to the job name.

        :param view_name: Name of a Jenkins view for which to
            retrieve jobs, ``str``.
        :returns: list of jobs, ``[{str: str, str: str, str: str, str: str}]``
        '''

        try:
            response = self.jenkins_open(Request(
                self._build_url(VIEW_JOBS, {u'name': view_name})
            ))
            if response:
                jobs = json.loads(response)['jobs']
            else:
                raise JenkinsException('view[%s] does not exist' % view_name)
        except HTTPError:
            raise JenkinsException('view[%s] does not exist' % view_name)
        except ValueError:
            raise JenkinsException(
                'Could not parse JSON info for view[%s]' % view_name)

        for job_dict in jobs:
            job_dict.update({u'fullname': job_dict[u'name']})

        return jobs

    def get_view_name(self, name):
        '''Return the name of a view using the API.

        That is roughly an identity method which can be used to quickly verify
        a view exists or is accessible without causing too much stress on the
        server side.

        :param name: View name, ``str``
        :returns: Name of view or None
        '''
        try:
            response = self.jenkins_open(Request(
                self._build_url(VIEW_NAME, locals())))
        except NotFoundException:
            return None
        else:
            actual = json.loads(response)['name']
            if actual != name:
                raise JenkinsException(
                    'Jenkins returned an unexpected view name %s '
                    '(expected: %s)' % (actual, name))
            return actual

    def assert_view_exists(self, name,
                           exception_message='view[%s] does not exist'):
        '''Raise an exception if a view does not exist

        :param name: Name of Jenkins view, ``str``
        :param exception_message: Message to use for the exception. Formatted
                                  with ``name``
        :throws: :class:`JenkinsException` whenever the view does not exist
        '''
        if not self.view_exists(name):
            raise JenkinsException(exception_message % name)

    def view_exists(self, name):
        '''Check whether a view exists

        :param name: Name of Jenkins view, ``str``
        :returns: ``True`` if Jenkins view exists
        '''
        if self.get_view_name(name) == name:
            return True

    def get_views(self):
        """Get list of views running.

        Each view is a dictionary with 'name' and 'url' keys.

        :returns: list of views, ``[ { str: str} ]``
        """
        return self.get_info()['views']

    def delete_view(self, name):
        '''Delete Jenkins view permanently.

        :param name: Name of Jenkins view, ``str``
        '''
        self.jenkins_open(Request(
            self._build_url(DELETE_VIEW, locals()), b''
        ))
        if self.view_exists(name):
            raise JenkinsException('delete[%s] failed' % (name))

    def create_view(self, name, config_xml):
        '''Create a new Jenkins view

        :param name: Name of Jenkins view, ``str``
        :param config_xml: config file text, ``str``
        '''
        if self.view_exists(name):
            raise JenkinsException('view[%s] already exists' % (name))

        self.jenkins_open(Request(
            self._build_url(CREATE_VIEW, locals()),
            config_xml.encode('utf-8'), DEFAULT_HEADERS))
        self.assert_view_exists(name, 'create[%s] failed')

    def reconfig_view(self, name, config_xml):
        '''Change configuration of existing Jenkins view.

        To create a new view, see :meth:`Jenkins.create_view`.

        :param name: Name of Jenkins view, ``str``
        :param config_xml: New XML configuration, ``str``
        '''
        reconfig_url = self._build_url(CONFIG_VIEW, locals())
        self.jenkins_open(Request(reconfig_url, config_xml.encode('utf-8'),
                                  DEFAULT_HEADERS))

    def get_view_config(self, name):
        '''Get configuration of existing Jenkins view.

        :param name: Name of Jenkins view, ``str``
        :returns: view configuration (XML format)
        '''
        request = Request(self._build_url(CONFIG_VIEW, locals()))
        return self.jenkins_open(request)

    def get_promotion_name(self, name, job_name):
        '''Return the name of a promotion using the API.

        That is roughly an identity method which can be used to
        quickly verify a promotion exists for a job or is accessible
        without causing too much stress on the server side.

        :param job_name: Job name, ``str``
        :param name: Promotion name, ``str``
        :returns: Name of promotion or None
        '''
        folder_url, short_name = self._get_job_folder(job_name)
        try:
            response = self.jenkins_open(Request(
                self._build_url(PROMOTION_NAME, locals())))
        except NotFoundException:
            return None
        else:
            actual = json.loads(response)['name']
            if actual != name:
                raise JenkinsException(
                    'Jenkins returned an unexpected promotion name %s '
                    '(expected: %s)' % (actual, name))
            return actual

    def assert_promotion_exists(self, name, job_name,
                                exception_message='promotion[%s] does not '
                                'exist for job[%s]'):
        '''Raise an exception if a job lacks a promotion

        :param job_name: Job name, ``str``
        :param name: Name of Jenkins promotion, ``str``
        :param exception_message: Message to use for the exception. Formatted
                                  with ``name`` and ``job_name``
        :throws: :class:`JenkinsException` whenever the promotion
            does not exist on a job
        '''
        if not self.promotion_exists(name, job_name):
            raise JenkinsException(exception_message % (name, job_name))

    def promotion_exists(self, name, job_name):
        '''Check whether a job has a certain promotion

        :param job_name: Job name, ``str``
        :param name: Name of Jenkins promotion, ``str``
        :returns: ``True`` if Jenkins promotion exists
        '''
        return self.get_promotion_name(name, job_name) == name

    def get_promotions_info(self, job_name, depth=0):
        '''Get promotion information dictionary of a job

        :param name: job_name, ``str``
        :param depth: JSON depth, ``int``
        :returns: Dictionary of promotion info, ``dict``
        '''
        folder_url, short_name = self._get_job_folder(job_name)
        try:
            response = self.jenkins_open(Request(
                self._build_url(PROMOTION_INFO, locals())))
            if response:
                return json.loads(response)
            else:
                raise JenkinsException('job[%s] does not exist' % job_name)
        except HTTPError:
            raise JenkinsException('job[%s] does not exist' % job_name)
        except ValueError:
            raise JenkinsException("Could not parse JSON info for "
                                   "promotions of job[%s]" % job_name)

    def get_promotions(self, job_name):
        """Get list of promotions running.

        Each promotion is a dictionary with 'name' and 'url' keys.

        :param job_name: Job name, ``str``
        :returns: list of promotions, ``[ { str: str} ]``
        """
        return self.get_promotions_info(job_name)['processes']

    def delete_promotion(self, name, job_name):
        '''Delete Jenkins promotion permanently.

        :param job_name: Job name, ``str``
        :param name: Name of Jenkins promotion, ``str``
        '''
        folder_url, short_name = self._get_job_folder(job_name)
        self.jenkins_open(Request(
            self._build_url(DELETE_PROMOTION, locals()), b''
        ))
        if self.promotion_exists(name, job_name):
            raise JenkinsException('delete[%s] from job[%s] failed' %
                                   (name, job_name))

    def create_promotion(self, name, job_name, config_xml):
        '''Create a new Jenkins promotion

        :param name: Name of Jenkins promotion, ``str``
        :param job_name: Job name, ``str``
        :param config_xml: config file text, ``str``
        '''
        if self.promotion_exists(name, job_name):
            raise JenkinsException('promotion[%s] already exists at job[%s]'
                                   % (name, job_name))

        folder_url, short_name = self._get_job_folder(job_name)
        self.jenkins_open(Request(
            self._build_url(CREATE_PROMOTION, locals()),
            config_xml.encode('utf-8'), DEFAULT_HEADERS))
        self.assert_promotion_exists(name, job_name, 'create[%s] at '
                                     'job[%s] failed')

    def reconfig_promotion(self, name, job_name, config_xml):
        '''Change configuration of existing Jenkins promotion.

        To create a new promotion, see :meth:`Jenkins.create_promotion`.

        :param name: Name of Jenkins promotion, ``str``
        :param job_name: Job name, ``str``
        :param config_xml: New XML configuration, ``str``
        '''
        folder_url, short_name = self._get_job_folder(job_name)
        reconfig_url = self._build_url(CONFIG_PROMOTION, locals())
        self.jenkins_open(Request(reconfig_url, config_xml.encode('utf-8'),
                                  DEFAULT_HEADERS))

    def get_promotion_config(self, name, job_name):
        '''Get configuration of existing Jenkins promotion.

        :param name: Name of Jenkins promotion, ``str``
        :param job_name: Job name, ``str``
        :returns: promotion configuration (XML format)
        '''
        folder_url, short_name = self._get_job_folder(job_name)
        request = Request(self._build_url(CONFIG_PROMOTION, locals()))
        return self.jenkins_open(request)

    def quiet_down(self):
        '''Prepare Jenkins for shutdown.

        No new builds will be started allowing running builds to complete
        prior to shutdown of the server.
        '''
        request = Request(self._build_url(QUIET_DOWN))
        self.jenkins_open(request)
        info = self.get_info()
        if not info['quietingDown']:
            raise JenkinsException('quiet down failed')