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)
140 full_path = '%s&%s' %(full_path, k)
141 conn = HTTPConnection(self.host)
144 full_path = full_path.replace(' ', '%20')
147 kwargs['headers'] = headers or {}
148 kwargs['headers']['X-Auth-Token'] = self.token
150 'Transfer-Encoding' not in headers \
151 or headers['Transfer-Encoding'] != 'chunked':
152 kwargs['headers']['Content-Length'] = len(body) if body else 0
154 kwargs['body'] = body
156 kwargs['headers']['Content-Type'] = ''
157 kwargs['headers'].setdefault('Content-Type', 'application/octet-stream')
159 conn.request(method, full_path, **kwargs)
160 except socket.error, e:
161 raise Fault(status=503)
163 resp = conn.getresponse()
164 headers = dict(resp.getheaders())
167 print '%d %s' % (resp.status, resp.reason)
168 for key, val in headers.items():
169 print '%s: %s' % (key.capitalize(), val)
172 length = resp.getheader('Content-length', None)
173 data = resp.read(length)
178 if int(resp.status) in ERROR_CODES.keys():
179 raise Fault(data, int(resp.status))
181 #print '*', resp.status, headers, data
182 return resp.status, headers, data
184 def delete(self, path, format='text'):
185 return self.req('DELETE', path, format=format)
187 def get(self, path, format='text', headers=None, params=None):
188 return self.req('GET', path, headers=headers, format=format,
191 def head(self, path, format='text', params=None):
192 return self.req('HEAD', path, format=format, params=params)
194 def post(self, path, body=None, format='text', headers=None, params=None):
195 return self.req('POST', path, body, headers=headers, format=format,
198 def put(self, path, body=None, format='text', headers=None):
199 return self.req('PUT', path, body, headers=headers, format=format)
201 def _list(self, path, detail=False, params=None, headers=None):
202 format = 'json' if detail else 'text'
203 status, headers, data = self.get(path, format=format, headers=headers,
206 data = json.loads(data) if data else ''
208 data = data.strip().split('\n')
211 def _get_metadata(self, path, prefix=None, params=None):
212 status, headers, data = self.head(path, params=params)
213 prefixlen = len(prefix) if prefix else 0
215 for key, val in headers.items():
216 if prefix and not key.startswith(prefix):
218 elif prefix and key.startswith(prefix):
219 key = key[prefixlen:]
223 def _update_metadata(self, path, entity, **meta):
225 adds new and updates the values of previously set metadata
227 params = {'update':None}
229 prefix = 'x-%s-meta-' % entity
230 for k,v in meta.items():
231 k = '%s%s' % (prefix, k)
232 k = '-'.join(elem.capitalize() for elem in k.split('-'))
234 self.post(path, headers=headers, params=params)
236 def _delete_metadata(self, path, entity, meta=[]):
238 delete previously set metadata
240 prefix = 'x-%s-meta-' % entity
241 prev_meta = self._get_metadata(path, prefix)
243 for key, val in prev_meta.items():
246 key = '%s%s' % (prefix, key)
247 key = '-'.join(elem.capitalize() for elem in key.split('-'))
249 self.post(path, headers=headers)
251 # Storage Account Services
253 def list_containers(self, detail=False, params=None, headers=None):
254 return self._list('', detail, params, headers)
256 def account_metadata(self, restricted=False, until=None):
257 prefix = 'x-account-meta-' if restricted else None
258 params = {'until':until} if until else None
259 return self._get_metadata('', prefix, params=params)
261 def update_account_metadata(self, **meta):
262 self._update_metadata('', 'account', **meta)
264 def delete_account_metadata(self, meta=[]):
265 self._delete_metadata('', 'account', meta)
267 def set_account_groups(self, **groups):
269 for key, val in groups.items():
270 headers['X-Account-Group-%s' % key.capitalize()] = val
271 self.post('', headers=headers)
273 # Storage Container Services
275 def _filter(self, l, d):
277 filter out from l elements having the metadata values provided
281 if type(elem) == types.DictionaryType:
283 k = 'x_object_meta_%s' % key
284 if k in elem.keys() and elem[k] == d[key]:
289 def _filter_trashed(self, l):
290 return self._filter(l, {'trash':'true'})
292 def list_objects(self, container, detail=False, headers=None,
293 include_trashed=False, **params):
294 l = self._list('/' + container, detail, params, headers)
295 if not include_trashed:
296 l = self._filter_trashed(l)
299 def create_container(self, container, headers=None, **meta):
300 for k,v in meta.items():
301 headers['X-Container-Meta-%s' %k.strip().upper()] = v.strip()
302 status, header, data = self.put('/' + container, headers=headers)
306 raise Fault(data, int(status))
309 def delete_container(self, container):
310 self.delete('/' + container)
312 def retrieve_container_metadata(self, container, restricted=False,
314 prefix = 'x-container-meta-' if restricted else None
315 params = {'until':until} if until else None
316 return self._get_metadata('/%s' % container, prefix, params=params)
318 def update_container_metadata(self, container, **meta):
319 self._update_metadata('/' + container, 'container', **meta)
321 def delete_container_metadata(self, container, meta=[]):
322 path = '/%s' % (container)
323 self._delete_metadata(path, 'container', meta)
325 def set_container_policies(self, container, **policies):
326 path = '/%s' % (container)
329 for key, val in policies.items():
330 headers['X-Container-Policy-%s' % key.capitalize()] = val
331 self.post(path, headers=headers)
333 # Storage Object Services
335 def retrieve_object(self, container, object, detail=False, headers=None,
337 path = '/%s/%s' % (container, object)
338 format = 'json' if detail else 'text'
339 params = {'version':version} if version else None
340 status, headers, data = self.get(path, format, headers, params)
343 def create_directory_marker(self, container, object):
345 raise Fault('Directory markers have to be nested in a container')
346 h = {'Content-Type':'application/directory'}
347 self.create_object(container, object, f=None, headers=h)
349 def _set_public(self, headers, public=False):
351 sets the public header
356 headers['X-Object-Public'] = public
358 headers['X-Object-Public'] = ''
360 def create_object(self, container, object, f=stdin, chunked=False,
361 blocksize=1024, headers={}, use_hashes=False,
362 public=None, **meta):
365 if f is None then creates a zero length object
366 if f is stdin or chunked is set then performs chunked transfer
368 path = '/%s/%s' % (container, object)
369 for k,v in meta.items():
370 headers['X-Object-Meta-%s' %k.strip().upper()] = v.strip()
371 self._set_public(headers, public)
372 headers = headers if headers else None
374 format = 'json' if use_hashes else 'text'
375 data = f.read() if f else None
379 data = json.dumps(data)
380 return self.put(path, data, headers=headers, format=format)
382 return self._chunked_transfer(path, 'PUT', f, headers=headers,
385 def update_object(self, container, object, f=stdin, chunked=False,
386 blocksize=1024, headers={}, offset=None, public=None,
389 path = '/%s/%s' % (container, object)
390 for k,v in meta.items():
391 headers['X-Object-Meta-%s' %k.strip().upper()] = v.strip()
393 headers['Content-Range'] = 'bytes %s-/*' % offset
395 headers['Content-Range'] = 'bytes */*'
396 self._set_public(headers, public)
397 headers = headers if headers else None
398 if not chunked and f != stdin:
399 data = f.read() if f else None
400 self.post(path, data, headers=headers)
402 self._chunked_transfer(path, 'POST', f, headers=headers,
405 def _change_obj_location(self, src_container, src_object, dst_container,
406 dst_object, remove=False, public=None, headers={}):
407 path = '/%s/%s' % (dst_container, dst_object)
411 headers['X-Move-From'] = '/%s/%s' % (src_container, src_object)
413 headers['X-Copy-From'] = '/%s/%s' % (src_container, src_object)
414 self._set_public(headers, public)
415 self.headers = headers if headers else None
416 headers['Content-Length'] = 0
417 self.put(path, headers=headers)
419 def copy_object(self, src_container, src_object, dst_container,
420 dst_object, public=False, headers=None):
421 self._change_obj_location(src_container, src_object,
422 dst_container, dst_object,
425 def move_object(self, src_container, src_object, dst_container,
426 dst_object, headers=None):
427 self._change_obj_location(src_container, src_object,
428 dst_container, dst_object, True,
431 def delete_object(self, container, object):
432 self.delete('/%s/%s' % (container, object))
434 def retrieve_object_metadata(self, container, object, restricted=False,
436 path = '/%s/%s' % (container, object)
437 prefix = 'x-object-meta-' if restricted else None
438 params = {'version':version} if version else None
439 return self._get_metadata(path, prefix, params=params)
441 def update_object_metadata(self, container, object, **meta):
442 path = '/%s/%s' % (container, object)
443 self._update_metadata(path, 'object', **meta)
445 def delete_object_metadata(self, container, object, meta=[]):
446 path = '/%s/%s' % (container, object)
447 self._delete_metadata(path, 'object', meta)
449 def trash_object(self, container, object):
452 actually resets all object metadata with trash = true
454 path = '/%s/%s' % (container, object)
455 meta = {'trash':'true'}
456 self._update_metadata(path, 'object', **meta)
458 def restore_object(self, container, object):
460 restores a trashed object
461 actualy removes trash object metadata info
463 self.delete_object_metadata(container, object, ['trash'])
465 def publish_object(self, container, object):
467 sets a previously created object publicly accessible
469 path = '/%s/%s' % (container, object)
471 headers['Content-Range'] = 'bytes */*'
472 self._set_public(headers, public=True)
473 self.post(path, headers=headers)
475 def unpublish_object(self, container, object):
479 path = '/%s/%s' % (container, object)
481 headers['Content-Range'] = 'bytes */*'
482 self._set_public(headers, public=False)
483 self.post(path, headers=headers)