root / lib / rapi / connector.py @ d1908b41
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# Copyright (C) 2006, 2007, 2008 Google Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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"""Remote API connection map.
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"""
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import cgi |
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import re |
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from ganeti import constants |
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from ganeti import http |
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from ganeti.rapi import baserlib |
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from ganeti.rapi import rlib2 |
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# the connection map is created at the end of this file
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CONNECTOR = {} |
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class Mapper: |
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"""Map resource to method.
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"""
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def __init__(self, connector=CONNECTOR): |
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"""Resource mapper constructor.
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@param connector: a dictionary, mapping method name with URL path regexp
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"""
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self._connector = connector
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def getController(self, uri): |
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"""Find method for a given URI.
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@param uri: string with URI
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@return: None if no method is found or a tuple containing
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the following fields:
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- method: name of method mapped to URI
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- items: a list of variable intems in the path
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- args: a dictionary with additional parameters from URL
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"""
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if '?' in uri: |
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(path, query) = uri.split('?', 1) |
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args = cgi.parse_qs(query) |
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else:
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path = uri |
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query = None
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args = {} |
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result = None
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for key, handler in self._connector.iteritems(): |
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# Regex objects
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if hasattr(key, "match"): |
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m = key.match(path) |
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if m:
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result = (handler, list(m.groups()), args)
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break
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# String objects
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elif key == path:
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result = (handler, [], args) |
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break
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if result:
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return result
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else:
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raise http.HttpNotFound()
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class R_root(baserlib.R_Generic): |
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"""/ resource.
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"""
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DOC_URI = "/"
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def GET(self): |
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"""Show the list of mapped resources.
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@return: a dictionary with 'name' and 'uri' keys for each of them.
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"""
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root_pattern = re.compile('^R_([a-zA-Z0-9]+)$')
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rootlist = [] |
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for handler in CONNECTOR.values(): |
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m = root_pattern.match(handler.__name__) |
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if m:
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name = m.group(1)
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if name != 'root': |
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rootlist.append(name) |
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return baserlib.BuildUriList(rootlist, "/%s") |
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def _getResources(id): |
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"""Return a list of resources underneath given id.
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This is to generalize querying of version resources lists.
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@return: a list of resources names.
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"""
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r_pattern = re.compile('^R_%s_([a-zA-Z0-9]+)$' % id) |
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rlist = [] |
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for handler in CONNECTOR.values(): |
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m = r_pattern.match(handler.__name__) |
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if m:
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name = m.group(1)
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rlist.append(name) |
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return rlist
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class R_2(baserlib.R_Generic): |
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""" /2 resource, the root of the version 2 API.
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"""
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DOC_URI = "/2"
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def GET(self): |
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"""Show the list of mapped resources.
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@return: a dictionary with 'name' and 'uri' keys for each of them.
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"""
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return baserlib.BuildUriList(_getResources("2"), "/2/%s") |
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CONNECTOR.update({ |
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"/": R_root,
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"/version": rlib2.R_version,
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"/2": R_2,
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"/2/jobs": rlib2.R_2_jobs,
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"/2/nodes": rlib2.R_2_nodes,
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re.compile(r'^/2/nodes/([\w\._-]+)$'): rlib2.R_2_nodes_name,
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re.compile(r'^/2/nodes/([\w\._-]+)/tags$'): rlib2.R_2_nodes_name_tags,
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"/2/instances": rlib2.R_2_instances,
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re.compile(r'^/2/instances/([\w\._-]+)$'): rlib2.R_2_instances_name,
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re.compile(r'^/2/instances/([\w\._-]+)/tags$'): rlib2.R_2_instances_name_tags,
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re.compile(r'^/2/instances/([\w\._-]+)/reboot$'):
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rlib2.R_2_instances_name_reboot, |
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re.compile(r'^/2/instances/([\w\._-]+)/shutdown$'):
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rlib2.R_2_instances_name_shutdown, |
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re.compile(r'^/2/instances/([\w\._-]+)/startup$'):
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rlib2.R_2_instances_name_startup, |
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re.compile(r'/2/jobs/(%s)$' % constants.JOB_ID_TEMPLATE): rlib2.R_2_jobs_id,
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"/2/tags": rlib2.R_2_tags,
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"/2/info": rlib2.R_2_info,
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"/2/os": rlib2.R_2_os,
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}) |