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)
90 assert data[-1] == '\n'
91 #remove trailing enter
92 data = data and data[:-1] or data
94 if int(resp.status) in ERROR_CODES.keys():
95 raise Fault(data, int(resp.status))
97 return resp.status, headers, data
99 def req(self, method, path, body=None, headers=None, format='text',
101 full_path = '/%s/%s%s?format=%s' % (self.api, self.account, path,
104 for k,v in params.items():
106 full_path = '%s&%s=%s' %(full_path, k, v)
107 conn = HTTPConnection(self.host)
110 full_path = full_path.replace(' ', '%20')
113 kwargs['headers'] = headers or {}
115 'Transfer-Encoding' not in headers \
116 or headers['Transfer-Encoding'] != 'chunked':
117 kwargs['headers']['Content-Length'] = len(body) if body else 0
119 kwargs['body'] = body
120 kwargs['headers']['Content-Type'] = 'application/octet-stream'
121 #print '****', method, full_path, kwargs
123 conn.request(method, full_path, **kwargs)
124 except socket.error, e:
125 raise Fault(status=503)
127 resp = conn.getresponse()
128 headers = dict(resp.getheaders())
131 print '%d %s' % (resp.status, resp.reason)
132 for key, val in headers.items():
133 print '%s: %s' % (key.capitalize(), val)
142 assert data[-1] == '\n'
143 #remove trailing enter
144 data = data and data[:-1] or data
146 if int(resp.status) in ERROR_CODES.keys():
147 raise Fault(data, int(resp.status))
149 #print '*', resp.status, headers, data
150 return resp.status, headers, data
152 def delete(self, path, format='text'):
153 return self.req('DELETE', path, format=format)
155 def get(self, path, format='text', headers=None, params=None):
156 return self.req('GET', path, headers=headers, format=format,
159 def head(self, path, format='text', params=None):
160 return self.req('HEAD', path, format=format, params=params)
162 def post(self, path, body=None, format='text', headers=None):
163 return self.req('POST', path, body, headers=headers, format=format)
165 def put(self, path, body=None, format='text', headers=None):
166 return self.req('PUT', path, body, headers=headers, format=format)
168 def _list(self, path, detail=False, params=None, headers=None):
169 format = 'json' if detail else 'text'
170 status, headers, data = self.get(path, format=format, headers=headers,
173 data = json.loads(data)
175 data = data.strip().split('\n')
178 def _get_metadata(self, path, prefix=None, params=None):
179 status, headers, data = self.head(path, params=params)
180 prefixlen = prefix and len(prefix) or 0
182 for key, val in headers.items():
183 if prefix and not key.startswith(prefix):
185 elif prefix and key.startswith(prefix):
186 key = key[prefixlen:]
190 def _set_metadata(self, path, entity, **meta):
192 for key, val in meta.items():
193 http_key = 'X-%s-Meta-%s' %(entity.capitalize(), key.capitalize())
194 headers[http_key] = val
195 self.post(path, headers=headers)
197 # Storage Account Services
199 def list_containers(self, detail=False, params=None, headers=None):
200 return self._list('', detail, params, headers)
202 def account_metadata(self, restricted=False, until=None):
203 prefix = restricted and 'x-account-meta-' or None
204 params = until and {'until':until} or None
205 return self._get_metadata('', prefix, params=params)
207 def update_account_metadata(self, **meta):
208 self._set_metadata('', 'account', **meta)
210 # Storage Container Services
212 def list_objects(self, container, detail=False, params=None, headers=None):
213 return self._list('/' + container, detail, params, headers)
215 def create_container(self, container, headers=None):
216 status, header, data = self.put('/' + container, headers=headers)
220 raise Fault(data, int(status))
223 def delete_container(self, container):
224 self.delete('/' + container)
226 def retrieve_container_metadata(self, container, restricted=False,
228 prefix = restricted and 'x-container-meta-' or None
229 params = until and {'until':until} or None
230 return self._get_metadata('/%s' % container, prefix, params=params)
232 def update_container_metadata(self, container, **meta):
233 self._set_metadata('/' + container, 'container', **meta)
235 # Storage Object Services
237 def retrieve_object(self, container, object, detail=False, headers=None,
239 path = '/%s/%s' % (container, object)
240 format = 'json' if detail else 'text'
241 params = version and {'version':version} or None
242 status, headers, data = self.get(path, format, headers, params)
245 def create_object(self, container, object, f=stdin, chunked=False,
246 blocksize=1024, headers=None):
249 if f is None then creates a zero length object
250 if f is stdin or chunked is set then performs chunked transfer
252 path = '/%s/%s' % (container, object)
253 if not chunked and f != stdin:
254 data = f and f.read() or None
255 return self.put(path, data, headers=headers)
257 return self._chunked_transfer(path, 'PUT', f, headers=headers,
260 def update_object(self, container, object, f=stdin, chunked=False,
261 blocksize=1024, headers=None):
264 path = '/%s/%s' % (container, object)
265 if not chunked and f != stdin:
267 self.post(path, data, headers=headers)
269 self._chunked_transfer(path, 'POST', f, headers=headers,
272 def _change_obj_location(self, src_container, src_object, dst_container,
273 dst_object, remove=False, headers=None):
274 path = '/%s/%s' % (dst_container, dst_object)
278 headers['X-Move-From'] = '/%s/%s' % (src_container, src_object)
280 headers['X-Copy-From'] = '/%s/%s' % (src_container, src_object)
281 headers['Content-Length'] = 0
282 self.put(path, headers=headers)
284 def copy_object(self, src_container, src_object, dst_container,
285 dst_object, headers=None):
286 self._change_obj_location(src_container, src_object,
287 dst_container, dst_object, headers)
289 def move_object(self, src_container, src_object, dst_container,
290 dst_object, headers=None):
291 self._change_obj_location(src_container, src_object,
292 dst_container, dst_object, True, headers)
294 def delete_object(self, container, object):
295 self.delete('/%s/%s' % (container, object))
297 def retrieve_object_metadata(self, container, object, restricted=False,
299 path = '/%s/%s' % (container, object)
300 prefix = restricted and 'x-object-meta-' or None
301 params = version and {'version':version} or None
302 return self._get_metadata(path, prefix, params=params)
304 def update_object_metadata(self, container, object, **meta):
305 path = '/%s/%s' % (container, object)
306 self._set_metadata(path, 'object', **meta)