1 from httplib import HTTPConnection, HTTP
7 import pithos.api.faults
9 ERROR_CODES = {304:'Not Modified',
14 411:'Length Required',
15 412:'Precondition Failed',
16 416:'Range Not Satisfiable',
17 422:'Unprocessable Entity',
18 503:'Service Unavailable'}
20 class Fault(Exception):
21 def __init__(self, data='', status=None):
22 if data == '' and status in ERROR_CODES.keys():
23 data = ERROR_CODES[status]
24 Exception.__init__(self, data)
29 def __init__(self, host, account, api='v1', verbose=False, debug=False):
30 """`host` can also include a port, e.g '127.0.0.1:8000'."""
33 self.account = account
35 self.verbose = verbose or debug
38 def _chunked_transfer(self, path, method='PUT', f=stdin, headers=None,
40 http = HTTPConnection(self.host)
43 path = '/%s/%s%s' % (self.api, self.account, path)
44 http.putrequest(method, path)
45 http.putheader('Content-Type', 'application/octet-stream')
46 http.putheader('Transfer-Encoding', 'chunked')
48 for header,value in headers.items():
49 http.putheader(header, value)
57 block = f.read(blocksize)
60 data = '%s\r\n%s\r\n' % (hex(len(block)), block)
74 resp = http.getresponse()
76 headers = dict(resp.getheaders())
79 print '%d %s' % (resp.status, resp.reason)
80 for key, val in headers.items():
81 print '%s: %s' % (key.capitalize(), val)
84 length = hasattr(headers, 'Content-length') \
85 and headers['Content-length'] or None
87 data = resp.read(length)
92 if int(resp.status) in ERROR_CODES.keys():
93 raise Fault(data, int(resp.status))
95 return resp.status, headers, data
97 def req(self, method, path, body=None, headers=None, format='text',
99 full_path = '/%s/%s%s?format=%s' % (self.api, self.account, path,
102 for k,v in params.items():
104 full_path = '%s&%s=%s' %(full_path, k, v)
105 conn = HTTPConnection(self.host)
108 full_path = full_path.replace(' ', '%20')
111 kwargs['headers'] = headers or {}
113 'Transfer-Encoding' not in headers \
114 or headers['Transfer-Encoding'] != 'chunked':
115 kwargs['headers']['Content-Length'] = len(body) if body else 0
117 kwargs['body'] = body
118 kwargs['headers']['Content-Type'] = 'application/octet-stream'
119 #print '****', method, full_path, kwargs
121 conn.request(method, full_path, **kwargs)
122 except socket.error, e:
123 raise Fault(status=503)
125 resp = conn.getresponse()
126 headers = dict(resp.getheaders())
129 print '%d %s' % (resp.status, resp.reason)
130 for key, val in headers.items():
131 print '%s: %s' % (key.capitalize(), val)
134 length = hasattr(headers, 'Content-length') \
135 and headers['Content-length'] or None
137 data = resp.read(length)
142 if int(resp.status) in ERROR_CODES.keys():
143 raise Fault(data, int(resp.status))
145 #print '*', resp.status, headers, data
146 return resp.status, headers, data
148 def delete(self, path, format='text'):
149 return self.req('DELETE', path, format=format)
151 def get(self, path, format='text', headers=None, params=None):
152 return self.req('GET', path, headers=headers, format=format,
155 def head(self, path, format='text', params=None):
156 return self.req('HEAD', path, format=format, params=params)
158 def post(self, path, body=None, format='text', headers=None):
159 return self.req('POST', path, body, headers=headers, format=format)
161 def put(self, path, body=None, format='text', headers=None):
162 return self.req('PUT', path, body, headers=headers, format=format)
164 def _list(self, path, detail=False, params=None, headers=None):
165 format = 'json' if detail else 'text'
166 status, headers, data = self.get(path, format=format, headers=headers,
169 data = json.loads(data)
171 data = data.strip().split('\n')
174 def _get_metadata(self, path, prefix=None, params=None):
175 status, headers, data = self.head(path, params=params)
176 prefixlen = prefix and len(prefix) or 0
178 for key, val in headers.items():
179 if prefix and not key.startswith(prefix):
181 elif prefix and key.startswith(prefix):
182 key = key[prefixlen:]
186 def _set_metadata(self, path, entity, **meta):
188 for key, val in meta.items():
189 http_key = 'X-%s-Meta-%s' %(entity.capitalize(), key.capitalize())
190 headers[http_key] = val
191 self.post(path, headers=headers)
193 # Storage Account Services
195 def list_containers(self, detail=False, params=None, headers=None):
196 return self._list('', detail, params, headers)
198 def account_metadata(self, restricted=False, until=None):
199 prefix = restricted and 'x-account-meta-' or None
200 params = until and {'until':until} or None
201 return self._get_metadata('', prefix, params=params)
203 def update_account_metadata(self, **meta):
204 self._set_metadata('', 'account', **meta)
206 # Storage Container Services
208 def list_objects(self, container, detail=False, params=None, headers=None):
209 return self._list('/' + container, detail, params, headers)
211 def create_container(self, container, headers=None):
212 status, header, data = self.put('/' + container, headers=headers)
216 raise Fault(data, int(status))
219 def delete_container(self, container):
220 self.delete('/' + container)
222 def retrieve_container_metadata(self, container, restricted=False,
224 prefix = restricted and 'x-container-meta-' or None
225 params = until and {'until':until} or None
226 return self._get_metadata('/%s' % container, prefix, params=params)
228 def update_container_metadata(self, container, **meta):
229 self._set_metadata('/' + container, 'container', **meta)
231 # Storage Object Services
233 def retrieve_object(self, container, object, detail=False, headers=None,
235 path = '/%s/%s' % (container, object)
236 format = 'json' if detail else 'text'
237 params = version and {'version':version} or None
238 status, headers, data = self.get(path, format, headers, params)
241 def create_object(self, container, object, f=stdin, chunked=False,
242 blocksize=1024, headers=None):
245 if f is None then creates a zero length object
246 if f is stdin or chunked is set then performs chunked transfer
248 path = '/%s/%s' % (container, object)
249 if not chunked and f != stdin:
250 data = f and f.read() or None
251 return self.put(path, data, headers=headers)
253 return self._chunked_transfer(path, 'PUT', f, headers=headers,
256 def update_object(self, container, object, f=stdin, chunked=False,
257 blocksize=1024, headers=None):
260 path = '/%s/%s' % (container, object)
261 if not chunked and f != stdin:
263 self.post(path, data, headers=headers)
265 self._chunked_transfer(path, 'POST', f, headers=headers,
268 def _change_obj_location(self, src_container, src_object, dst_container,
269 dst_object, remove=False, headers=None):
270 path = '/%s/%s' % (dst_container, dst_object)
274 headers['X-Move-From'] = '/%s/%s' % (src_container, src_object)
276 headers['X-Copy-From'] = '/%s/%s' % (src_container, src_object)
277 headers['Content-Length'] = 0
278 self.put(path, headers=headers)
280 def copy_object(self, src_container, src_object, dst_container,
281 dst_object, headers=None):
282 self._change_obj_location(src_container, src_object,
283 dst_container, dst_object,
286 def move_object(self, src_container, src_object, dst_container,
287 dst_object, headers=None):
288 self._change_obj_location(src_container, src_object,
289 dst_container, dst_object, True, headers)
291 def delete_object(self, container, object):
292 self.delete('/%s/%s' % (container, object))
294 def retrieve_object_metadata(self, container, object, restricted=False,
296 path = '/%s/%s' % (container, object)
297 prefix = restricted and 'x-object-meta-' or None
298 params = version and {'version':version} or None
299 return self._get_metadata(path, prefix, params=params)
301 def update_object_metadata(self, container, object, **meta):
302 path = '/%s/%s' % (container, object)
303 self._set_metadata(path, 'object', **meta)