1 # Copyright 2011 GRNET S.A. All rights reserved.
3 # Redistribution and use in source and binary forms, with or
4 # without modification, are permitted provided that the following
7 # 1. Redistributions of source code must retain the above
8 # copyright notice, this list of conditions and the following
11 # 2. Redistributions in binary form must reproduce the above
12 # copyright notice, this list of conditions and the following
13 # disclaimer in the documentation and/or other materials
14 # provided with the distribution.
16 # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
17 # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
20 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
23 # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
24 # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
26 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 # POSSIBILITY OF SUCH DAMAGE.
29 # The views and conclusions contained in the software and
30 # documentation are those of the authors and should not be
31 # interpreted as representing official policies, either expressed
32 # or implied, of GRNET S.A.
34 from httplib import HTTPConnection, HTTP
40 import pithos.api.faults
42 ERROR_CODES = {304:'Not Modified',
47 411:'Length Required',
48 412:'Precondition Failed',
49 416:'Range Not Satisfiable',
50 422:'Unprocessable Entity',
51 503:'Service Unavailable'}
53 class Fault(Exception):
54 def __init__(self, data='', status=None):
55 if data == '' and status in ERROR_CODES.keys():
56 data = ERROR_CODES[status]
57 Exception.__init__(self, data)
62 def __init__(self, host, token, account, api='v1', verbose=False, debug=False):
63 """`host` can also include a port, e.g '127.0.0.1:8000'."""
66 self.account = account
68 self.verbose = verbose or debug
72 def _chunked_transfer(self, path, method='PUT', f=stdin, headers=None,
74 http = HTTPConnection(self.host)
77 path = '/%s/%s%s' % (self.api, self.account, path)
78 http.putrequest(method, path)
79 http.putheader('X-Auth-Token', self.token)
80 http.putheader('Content-Type', 'application/octet-stream')
81 http.putheader('Transfer-Encoding', 'chunked')
83 for header,value in headers.items():
84 http.putheader(header, value)
92 block = f.read(blocksize)
95 data = '%s\r\n%s\r\n' % (hex(len(block)), block)
109 resp = http.getresponse()
111 headers = dict(resp.getheaders())
114 print '%d %s' % (resp.status, resp.reason)
115 for key, val in headers.items():
116 print '%s: %s' % (key.capitalize(), val)
119 length = resp.getheader('Content-length', None)
120 data = resp.read(length)
125 if int(resp.status) in ERROR_CODES.keys():
126 raise Fault(data, int(resp.status))
128 #print '*', resp.status, headers, data
129 return resp.status, headers, data
131 def req(self, method, path, body=None, headers=None, format='text',
133 full_path = '/%s/%s%s?format=%s' % (self.api, self.account, path,
136 for k,v in params.items():
138 full_path = '%s&%s=%s' %(full_path, k, v)
139 conn = HTTPConnection(self.host)
142 full_path = full_path.replace(' ', '%20')
145 kwargs['headers'] = headers or {}
146 kwargs['headers']['X-Auth-Token'] = self.token
148 'Transfer-Encoding' not in headers \
149 or headers['Transfer-Encoding'] != 'chunked':
150 kwargs['headers']['Content-Length'] = len(body) if body else 0
152 kwargs['body'] = body
153 kwargs['headers'].setdefault('Content-Type', 'application/octet-stream')
155 conn.request(method, full_path, **kwargs)
156 except socket.error, e:
157 raise Fault(status=503)
159 resp = conn.getresponse()
160 headers = dict(resp.getheaders())
163 print '%d %s' % (resp.status, resp.reason)
164 for key, val in headers.items():
165 print '%s: %s' % (key.capitalize(), val)
168 length = resp.getheader('Content-length', None)
169 data = resp.read(length)
174 if int(resp.status) in ERROR_CODES.keys():
175 raise Fault(data, int(resp.status))
177 #print '*', resp.status, headers, data
178 return resp.status, headers, data
180 def delete(self, path, format='text'):
181 return self.req('DELETE', path, format=format)
183 def get(self, path, format='text', headers=None, params=None):
184 return self.req('GET', path, headers=headers, format=format,
187 def head(self, path, format='text', params=None):
188 return self.req('HEAD', path, format=format, params=params)
190 def post(self, path, body=None, format='text', headers=None):
191 return self.req('POST', path, body, headers=headers, format=format)
193 def put(self, path, body=None, format='text', headers=None):
194 return self.req('PUT', path, body, headers=headers, format=format)
196 def _list(self, path, detail=False, params=None, headers=None):
197 format = 'json' if detail else 'text'
198 status, headers, data = self.get(path, format=format, headers=headers,
201 data = json.loads(data) if data else ''
203 data = data.strip().split('\n')
206 def _get_metadata(self, path, prefix=None, params=None):
207 status, headers, data = self.head(path, params=params)
208 prefixlen = len(prefix) if prefix else 0
210 for key, val in headers.items():
211 if prefix and not key.startswith(prefix):
213 elif prefix and key.startswith(prefix):
214 key = key[prefixlen:]
218 def _update_metadata(self, path, entity, **meta):
220 adds new and updates the values of previously set metadata
222 prefix = 'x-%s-meta-' % entity
223 prev_meta = self._get_metadata(path, prefix)
224 prev_meta.update(meta)
226 for key, val in prev_meta.items():
227 key = '%s%s' % (prefix, key)
228 key = '-'.join(elem.capitalize() for elem in key.split('-'))
230 self.post(path, headers=headers)
232 def _delete_metadata(self, path, entity, meta=[]):
234 delete previously set metadata
236 prefix = 'x-%s-meta-' % entity
237 prev_meta = self._get_metadata(path, prefix)
239 for key, val in prev_meta.items():
242 key = '%s%s' % (prefix, key)
243 key = '-'.join(elem.capitalize() for elem in key.split('-'))
245 self.post(path, headers=headers)
247 # Storage Account Services
249 def list_containers(self, detail=False, params=None, headers=None):
250 return self._list('', detail, params, headers)
252 def account_metadata(self, restricted=False, until=None):
253 prefix = 'x-account-meta-' if restricted else None
254 params = {'until':until} if until else None
255 return self._get_metadata('', prefix, params=params)
257 def update_account_metadata(self, **meta):
258 self._update_metadata('', 'account', **meta)
260 def delete_account_metadata(self, meta=[]):
261 self._delete_metadata('', 'account', meta)
263 def set_account_groups(self, **groups):
265 for key, val in groups.items():
266 headers['X-Account-Group-%s' % key.capitalize()] = val
267 self.post('', headers=headers)
269 # Storage Container Services
271 def _filter(self, l, d):
273 filter out from l elements having the metadata values provided
277 if type(elem) == types.DictionaryType:
279 k = 'x_object_meta_%s' % key
280 if k in elem.keys() and elem[k] == d[key]:
285 def _filter_trashed(self, l):
286 return self._filter(l, {'trash':'true'})
288 def list_objects(self, container, detail=False, headers=None,
289 include_trashed=False, **params):
290 l = self._list('/' + container, detail, params, headers)
291 if not include_trashed:
292 l = self._filter_trashed(l)
295 def create_container(self, container, headers=None, **meta):
296 for k,v in meta.items():
297 headers['X-Container-Meta-%s' %k.strip().upper()] = v.strip()
298 status, header, data = self.put('/' + container, headers=headers)
302 raise Fault(data, int(status))
305 def delete_container(self, container):
306 self.delete('/' + container)
308 def retrieve_container_metadata(self, container, restricted=False,
310 prefix = 'x-container-meta-' if restricted else None
311 params = {'until':until} if until else None
312 return self._get_metadata('/%s' % container, prefix, params=params)
314 def update_container_metadata(self, container, **meta):
315 self._update_metadata('/' + container, 'container', **meta)
317 def delete_container_metadata(self, container, meta=[]):
318 path = '/%s' % (container)
319 self._delete_metadata(path, 'container', meta)
321 def set_container_policies(self, container, **policies):
322 path = '/%s' % (container)
325 for key, val in policies.items():
326 headers['X-Container-Policy-%s' % key.capitalize()] = val
327 self.post(path, headers=headers)
329 # Storage Object Services
331 def retrieve_object(self, container, object, detail=False, headers=None,
333 path = '/%s/%s' % (container, object)
334 format = 'json' if detail else 'text'
335 params = {'version':version} if version else None
336 status, headers, data = self.get(path, format, headers, params)
339 def create_directory_marker(self, container, object):
341 raise Fault('Directory markers have to be nested in a container')
342 h = {'Content-Type':'application/directory'}
343 self.create_object(container, object, f=None, headers=h)
345 def _set_public(self, headers, public=False):
347 sets the public header
352 headers['X-Object-Public'] = public
354 headers['X-Object-Public'] = ''
356 def create_object(self, container, object, f=stdin, chunked=False,
357 blocksize=1024, headers={}, use_hashes=False,
358 public=None, **meta):
361 if f is None then creates a zero length object
362 if f is stdin or chunked is set then performs chunked transfer
364 path = '/%s/%s' % (container, object)
365 for k,v in meta.items():
366 headers['X-Object-Meta-%s' %k.strip().upper()] = v.strip()
367 self._set_public(headers, public)
368 headers = headers if headers else None
370 format = 'json' if use_hashes else 'text'
371 data = f.read() if f else None
375 data = json.dumps(data)
376 return self.put(path, data, headers=headers, format=format)
378 return self._chunked_transfer(path, 'PUT', f, headers=headers,
381 def update_object(self, container, object, f=stdin, chunked=False,
382 blocksize=1024, headers={}, offset=None, public=None,
385 path = '/%s/%s' % (container, object)
386 for k,v in meta.items():
387 headers['X-Object-Meta-%s' %k.strip().upper()] = v.strip()
389 headers['Content-Range'] = 'bytes %s-/*' % offset
391 headers['Content-Range'] = 'bytes */*'
392 self._set_public(headers, public)
393 headers = headers if headers else None
394 if not chunked and f != stdin:
395 data = f.read() if f else None
396 self.post(path, data, headers=headers)
398 self._chunked_transfer(path, 'POST', f, headers=headers,
401 def _change_obj_location(self, src_container, src_object, dst_container,
402 dst_object, remove=False, public=None, headers={}):
403 path = '/%s/%s' % (dst_container, dst_object)
407 headers['X-Move-From'] = '/%s/%s' % (src_container, src_object)
409 headers['X-Copy-From'] = '/%s/%s' % (src_container, src_object)
410 self._set_public(headers, public)
411 self.headers = headers if headers else None
412 headers['Content-Length'] = 0
413 self.put(path, headers=headers)
415 def copy_object(self, src_container, src_object, dst_container,
416 dst_object, public=False, headers=None):
417 self._change_obj_location(src_container, src_object,
418 dst_container, dst_object,
421 def move_object(self, src_container, src_object, dst_container,
422 dst_object, headers=None):
423 self._change_obj_location(src_container, src_object,
424 dst_container, dst_object, True,
427 def delete_object(self, container, object):
428 self.delete('/%s/%s' % (container, object))
430 def retrieve_object_metadata(self, container, object, restricted=False,
432 path = '/%s/%s' % (container, object)
433 prefix = 'x-object-meta-' if restricted else None
434 params = {'version':version} if version else None
435 return self._get_metadata(path, prefix, params=params)
437 def update_object_metadata(self, container, object, **meta):
438 path = '/%s/%s' % (container, object)
439 self._update_metadata(path, 'object', **meta)
441 def delete_object_metadata(self, container, object, meta=[]):
442 path = '/%s/%s' % (container, object)
443 self._delete_metadata(path, 'object', meta)
445 def trash_object(self, container, object):
448 actually resets all object metadata with trash = true
450 path = '/%s/%s' % (container, object)
451 meta = {'trash':'true'}
452 self._update_metadata(path, 'object', **meta)
454 def restore_object(self, container, object):
456 restores a trashed object
457 actualy removes trash object metadata info
459 self.delete_object_metadata(container, object, ['trash'])
461 def publish_object(self, container, object):
463 sets a previously created object publicly accessible
465 path = '/%s/%s' % (container, object)
467 headers['Content-Range'] = 'bytes */*'
468 self._set_public(headers, public=True)
469 self.post(path, headers=headers)
471 def unpublish_object(self, container, object):
475 path = '/%s/%s' % (container, object)
477 headers['Content-Range'] = 'bytes */*'
478 self._set_public(headers, public=False)
479 self.post(path, headers=headers)