rdudyala | b086cf3 | 2016-08-11 00:07:45 -0400 | [diff] [blame] | 1 | # |
| 2 | # Copyright 2013 NEC Corporation. All rights reserved. |
| 3 | # |
| 4 | # Licensed under the Apache License, Version 2.0 (the "License"); you may |
| 5 | # not use this file except in compliance with the License. You may obtain |
| 6 | # a copy of the License at |
| 7 | # |
| 8 | # http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | # |
| 10 | # Unless required by applicable law or agreed to in writing, software |
| 11 | # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 12 | # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 13 | # License for the specific language governing permissions and limitations |
| 14 | # under the License. |
| 15 | |
| 16 | import abc |
| 17 | |
| 18 | from oslo_config import cfg |
| 19 | import requests |
| 20 | from requests import auth |
| 21 | import six |
| 22 | import json |
| 23 | |
| 24 | from ceilometer.i18n import _ |
| 25 | from ceilometer.openstack.common import log |
| 26 | |
| 27 | |
| 28 | CONF = cfg.CONF |
| 29 | CONF.import_opt('http_timeout', 'ceilometer.service') |
| 30 | |
| 31 | |
| 32 | LOG = log.getLogger(__name__) |
| 33 | |
| 34 | |
| 35 | @six.add_metaclass(abc.ABCMeta) |
| 36 | class _Base(object): |
| 37 | """Base class of ONOS REST APIs Clients.""" |
| 38 | |
| 39 | @abc.abstractproperty |
| 40 | def base_url(self): |
| 41 | """Returns base url for each REST API.""" |
| 42 | |
| 43 | def __init__(self, client): |
| 44 | self.client = client |
| 45 | |
| 46 | def request(self, path, container_name): |
| 47 | return self.client.request(self.base_url + path, container_name) |
| 48 | |
| 49 | |
| 50 | class ONOSRESTAPIFailed(Exception): |
| 51 | pass |
| 52 | |
| 53 | |
| 54 | class ONOSRESTAPIClient(_Base): |
| 55 | """ONOS Statistics REST API Client |
| 56 | |
| 57 | Base URL: |
| 58 | {endpoint}/onos/v1 |
| 59 | """ |
| 60 | |
| 61 | base_url = '/onos/v1' |
| 62 | |
| 63 | def get_devices(self, container_name): |
| 64 | """Get device informations |
| 65 | |
| 66 | URL: |
| 67 | {Base URL}/devices |
| 68 | """ |
| 69 | output = '{ "devices":[ \ |
| 70 | { \ |
| 71 | "id":"of:0000000000000001", \ |
| 72 | "type":"SWITCH", \ |
| 73 | "available":true, \ |
| 74 | "role":"MASTER", \ |
| 75 | "mfr":"Stanford University, Ericsson Research and CPqD Research", \ |
| 76 | "hw":"OpenFlow 1.3 Reference Userspace Switch", \ |
| 77 | "sw":"Apr 6 2015 16:10:53", \ |
| 78 | "serial":"1", \ |
| 79 | "chassisId":"1", \ |
| 80 | "annotations":{"protocol":"OF_13","channelId":"192.168.10.50:39306"} \ |
| 81 | }]}' |
| 82 | |
| 83 | return self.request('/devices', container_name) |
| 84 | #LOG.info("SRIKANTH: Returning dummy ONOS devices output") |
| 85 | #outputJson = json.loads(output) |
| 86 | #return outputJson |
| 87 | |
| 88 | def get_flow_statistics(self, container_name): |
| 89 | """Get flow statistics |
| 90 | |
| 91 | URL: |
| 92 | {Base URL}/flows |
| 93 | """ |
| 94 | output = '{"flows":[ \ |
| 95 | { \ |
| 96 | "deviceId":"of:0000000000000001", \ |
| 97 | "id":"3377699721451393", \ |
| 98 | "tableId":2, \ |
| 99 | "appId":12, \ |
| 100 | "groupId":0, \ |
| 101 | "priority":100, \ |
| 102 | "timeout":0, \ |
| 103 | "isPermanent":true, \ |
| 104 | "state":"PENDING_ADD", \ |
| 105 | "life":0, \ |
| 106 | "packets":0, \ |
| 107 | "bytes":0, \ |
| 108 | "lastSeen":1439355470576, \ |
| 109 | "treatment":{"instructions":[],"deferred":[]}, \ |
| 110 | "selector":{"criteria":[]} \ |
| 111 | }]}' |
| 112 | return self.request('/flows', container_name) |
| 113 | #LOG.info("SRIKANTH: Returning dummy ONOS flow statistics output") |
| 114 | #outputJson = json.loads(output) |
| 115 | #return outputJson |
| 116 | |
| 117 | def get_port_statistics(self, container_name): |
| 118 | """Get port statistics |
| 119 | |
| 120 | URL: |
| 121 | {Base URL}/portstats |
| 122 | """ |
| 123 | output = '{ "portstats": [ \ |
| 124 | { \ |
| 125 | "deviceId":"of:0000000000000001", \ |
| 126 | "id":"3", \ |
| 127 | "receivePackets": "182", \ |
| 128 | "sentPackets": "173", \ |
| 129 | "receiveBytes": "12740", \ |
| 130 | "sentBytes": "12110", \ |
| 131 | "receiveDrops": "740", \ |
| 132 | "sentDrops": "110", \ |
| 133 | "receiveErrors": "740", \ |
| 134 | "sentErrors": "110", \ |
| 135 | "receiveFrameError": "740", \ |
| 136 | "receiveOverRunError": "740", \ |
| 137 | "receiveCrcError": "740", \ |
| 138 | "collisionCount": "110" \ |
| 139 | }]}' |
| 140 | #TODO Add Portstats REST API to ONOS |
| 141 | return self.request('/statistics/ports', container_name) |
| 142 | #LOG.info("SRIKANTH: Returning dummy ONOS port statistics output") |
| 143 | #outputJson = json.loads(output) |
| 144 | #return outputJson |
| 145 | |
| 146 | def get_table_statistics(self, container_name): |
| 147 | """Get table statistics |
| 148 | |
| 149 | URL: |
| 150 | {Base URL}/table |
| 151 | """ |
| 152 | output = '{ \ |
| 153 | "tableStatistics": [ \ |
| 154 | { \ |
| 155 | "deviceId":"of:0000000000000001", \ |
| 156 | "id":"4", \ |
| 157 | "activeCount": "11", \ |
| 158 | "lookupCount": "816", \ |
| 159 | "matchedCount": "220", \ |
| 160 | "maximumEntries": "1000" \ |
| 161 | } \ |
| 162 | ] \ |
| 163 | }' |
| 164 | #TODO Add table statistics REST API to ONOS |
| 165 | return self.request('/statistics/flows/tables', container_name) |
| 166 | #LOG.info("SRIKANTH: Returning dummy ONOS table statistics output") |
| 167 | #outputJson = json.loads(output) |
| 168 | #return outputJson |
| 169 | |
| 170 | class Client(object): |
| 171 | |
| 172 | def __init__(self, endpoint, params): |
| 173 | self.rest_client = ONOSRESTAPIClient(self) |
| 174 | |
| 175 | self._endpoint = endpoint |
| 176 | |
| 177 | self._req_params = self._get_req_params(params) |
| 178 | |
| 179 | @staticmethod |
| 180 | def _get_req_params(params): |
| 181 | req_params = { |
| 182 | 'headers': { |
| 183 | 'Accept': 'application/json' |
| 184 | }, |
| 185 | 'timeout': CONF.http_timeout, |
| 186 | } |
| 187 | |
| 188 | auth_way = params.get('auth') |
| 189 | if auth_way in ['basic', 'digest']: |
| 190 | user = params.get('user') |
| 191 | password = params.get('password') |
| 192 | |
| 193 | if auth_way == 'basic': |
| 194 | auth_class = auth.HTTPBasicAuth |
| 195 | else: |
| 196 | auth_class = auth.HTTPDigestAuth |
| 197 | |
| 198 | req_params['auth'] = auth_class(user, password) |
| 199 | return req_params |
| 200 | |
| 201 | def _log_req(self, url): |
| 202 | |
| 203 | curl_command = ['REQ: curl -i -X GET ', '"%s" ' % (url)] |
| 204 | |
| 205 | if 'auth' in self._req_params: |
| 206 | auth_class = self._req_params['auth'] |
| 207 | if isinstance(auth_class, auth.HTTPBasicAuth): |
| 208 | curl_command.append('--basic ') |
| 209 | else: |
| 210 | curl_command.append('--digest ') |
| 211 | |
| 212 | curl_command.append('--user "%s":"%s" ' % (auth_class.username, |
| 213 | auth_class.password)) |
| 214 | |
| 215 | for name, value in six.iteritems(self._req_params['headers']): |
| 216 | curl_command.append('-H "%s: %s" ' % (name, value)) |
| 217 | |
| 218 | LOG.debug(''.join(curl_command)) |
| 219 | |
| 220 | @staticmethod |
| 221 | def _log_res(resp): |
| 222 | |
| 223 | dump = ['RES: \n', 'HTTP %.1f %s %s\n' % (resp.raw.version, |
| 224 | resp.status_code, |
| 225 | resp.reason)] |
| 226 | dump.extend('%s: %s\n' % (k, v) |
| 227 | for k, v in six.iteritems(resp.headers)) |
| 228 | dump.append('\n') |
| 229 | if resp.content: |
| 230 | dump.extend([resp.content, '\n']) |
| 231 | |
| 232 | LOG.debug(''.join(dump)) |
| 233 | |
| 234 | def _http_request(self, url): |
| 235 | if CONF.debug: |
| 236 | self._log_req(url) |
| 237 | resp = requests.get(url, **self._req_params) |
| 238 | if CONF.debug: |
| 239 | self._log_res(resp) |
| 240 | if resp.status_code / 100 != 2: |
| 241 | raise ONOSRESTAPIFailed( |
| 242 | _('ONOS API returned %(status)s %(reason)s') % |
| 243 | {'status': resp.status_code, 'reason': resp.reason}) |
| 244 | |
| 245 | return resp.json() |
| 246 | |
| 247 | def request(self, path, container_name): |
| 248 | |
| 249 | url = self._endpoint + path % {'container_name': container_name} |
| 250 | return self._http_request(url) |