root / pithos / lib / client.py @ d2d5c360
History | View | Annotate | Download (9.5 kB)
1 | ec1b8d3e | Sofia Papagiannaki | from httplib import HTTPConnection, HTTP |
---|---|---|---|
2 | ec1b8d3e | Sofia Papagiannaki | from sys import stdin |
3 | 3f5b02c7 | Sofia Papagiannaki | |
4 | 3f5b02c7 | Sofia Papagiannaki | import json |
5 | ec1b8d3e | Sofia Papagiannaki | import types |
6 | 0ea1dcc4 | Sofia Papagiannaki | import socket |
7 | 3f5b02c7 | Sofia Papagiannaki | |
8 | 3f5b02c7 | Sofia Papagiannaki | class Fault(Exception): |
9 | 3f5b02c7 | Sofia Papagiannaki | def __init__(self, data=''): |
10 | 3f5b02c7 | Sofia Papagiannaki | Exception.__init__(self, data) |
11 | 3f5b02c7 | Sofia Papagiannaki | self.data = data
|
12 | 3f5b02c7 | Sofia Papagiannaki | |
13 | 3f5b02c7 | Sofia Papagiannaki | |
14 | 3f5b02c7 | Sofia Papagiannaki | class Client(object): |
15 | 3f5b02c7 | Sofia Papagiannaki | def __init__(self, host, account, api='v1', verbose=False, debug=False): |
16 | 3f5b02c7 | Sofia Papagiannaki | """`host` can also include a port, e.g '127.0.0.1:8000'."""
|
17 | 3f5b02c7 | Sofia Papagiannaki | |
18 | 3f5b02c7 | Sofia Papagiannaki | self.host = host
|
19 | 3f5b02c7 | Sofia Papagiannaki | self.account = account
|
20 | 3f5b02c7 | Sofia Papagiannaki | self.api = api
|
21 | 3f5b02c7 | Sofia Papagiannaki | self.verbose = verbose or debug |
22 | 3f5b02c7 | Sofia Papagiannaki | self.debug = debug
|
23 | 3f5b02c7 | Sofia Papagiannaki | |
24 | ec1b8d3e | Sofia Papagiannaki | def _chunked_transfer(self, path, method='PUT', f=stdin, headers=None, |
25 | ec1b8d3e | Sofia Papagiannaki | blocksize=1024):
|
26 | ec1b8d3e | Sofia Papagiannaki | http = HTTPConnection(self.host)
|
27 | ec1b8d3e | Sofia Papagiannaki | |
28 | ec1b8d3e | Sofia Papagiannaki | # write header
|
29 | ec1b8d3e | Sofia Papagiannaki | path = '/%s/%s%s' % (self.api, self.account, path) |
30 | ec1b8d3e | Sofia Papagiannaki | http.putrequest(method, path) |
31 | ec1b8d3e | Sofia Papagiannaki | http.putheader('Content-Type', 'application/octet-stream') |
32 | ec1b8d3e | Sofia Papagiannaki | http.putheader('Transfer-Encoding', 'chunked') |
33 | ec1b8d3e | Sofia Papagiannaki | if headers:
|
34 | ec1b8d3e | Sofia Papagiannaki | for header,value in headers.items(): |
35 | ec1b8d3e | Sofia Papagiannaki | http.putheader(header, value) |
36 | ec1b8d3e | Sofia Papagiannaki | http.endheaders() |
37 | ec1b8d3e | Sofia Papagiannaki | |
38 | ec1b8d3e | Sofia Papagiannaki | # write body
|
39 | ec1b8d3e | Sofia Papagiannaki | data = ''
|
40 | ec1b8d3e | Sofia Papagiannaki | while True: |
41 | ec1b8d3e | Sofia Papagiannaki | if f.closed:
|
42 | ec1b8d3e | Sofia Papagiannaki | break
|
43 | ec1b8d3e | Sofia Papagiannaki | block = f.read(blocksize) |
44 | ec1b8d3e | Sofia Papagiannaki | if block == '': |
45 | ec1b8d3e | Sofia Papagiannaki | break
|
46 | ec1b8d3e | Sofia Papagiannaki | data = '%s\r\n%s\r\n' % (hex(len(block)), block) |
47 | ec1b8d3e | Sofia Papagiannaki | try:
|
48 | ec1b8d3e | Sofia Papagiannaki | http.send(data) |
49 | ec1b8d3e | Sofia Papagiannaki | except:
|
50 | ec1b8d3e | Sofia Papagiannaki | #retry
|
51 | ec1b8d3e | Sofia Papagiannaki | http.send(data) |
52 | ec1b8d3e | Sofia Papagiannaki | data = '0x0\r\n'
|
53 | ec1b8d3e | Sofia Papagiannaki | try:
|
54 | ec1b8d3e | Sofia Papagiannaki | http.send(data) |
55 | ec1b8d3e | Sofia Papagiannaki | except:
|
56 | ec1b8d3e | Sofia Papagiannaki | #retry
|
57 | ec1b8d3e | Sofia Papagiannaki | http.send(data) |
58 | ec1b8d3e | Sofia Papagiannaki | |
59 | ec1b8d3e | Sofia Papagiannaki | # get response
|
60 | ec1b8d3e | Sofia Papagiannaki | resp = http.getresponse() |
61 | ec1b8d3e | Sofia Papagiannaki | headers = dict(resp.getheaders())
|
62 | ec1b8d3e | Sofia Papagiannaki | |
63 | ec1b8d3e | Sofia Papagiannaki | if self.verbose: |
64 | ec1b8d3e | Sofia Papagiannaki | print '%d %s' % (resp.status, resp.reason) |
65 | ec1b8d3e | Sofia Papagiannaki | for key, val in headers.items(): |
66 | ec1b8d3e | Sofia Papagiannaki | print '%s: %s' % (key.capitalize(), val) |
67 | ec1b8d3e | Sofia Papagiannaki | print
|
68 | ec1b8d3e | Sofia Papagiannaki | |
69 | ec1b8d3e | Sofia Papagiannaki | data = resp.read() |
70 | ec1b8d3e | Sofia Papagiannaki | if self.debug: |
71 | ec1b8d3e | Sofia Papagiannaki | print data
|
72 | ec1b8d3e | Sofia Papagiannaki | print
|
73 | ec1b8d3e | Sofia Papagiannaki | |
74 | ec1b8d3e | Sofia Papagiannaki | return resp.status, headers, data
|
75 | ec1b8d3e | Sofia Papagiannaki | |
76 | d2d5c360 | Sofia Papagiannaki | def req(self, method, path, body=None, headers=None, format='text', |
77 | d2d5c360 | Sofia Papagiannaki | params=None):
|
78 | d2d5c360 | Sofia Papagiannaki | full_path = '/%s/%s%s?format=%s' % (self.api, self.account, path, |
79 | d2d5c360 | Sofia Papagiannaki | format) |
80 | 3f5b02c7 | Sofia Papagiannaki | if params:
|
81 | 3f5b02c7 | Sofia Papagiannaki | for k,v in params.items(): |
82 | ec1b8d3e | Sofia Papagiannaki | if v:
|
83 | ec1b8d3e | Sofia Papagiannaki | full_path = '%s&%s=%s' %(full_path, k, v)
|
84 | 3f5b02c7 | Sofia Papagiannaki | conn = HTTPConnection(self.host)
|
85 | 3f5b02c7 | Sofia Papagiannaki | |
86 | d2d5c360 | Sofia Papagiannaki | #encode whitespace
|
87 | d2d5c360 | Sofia Papagiannaki | full_path = full_path.replace(' ', '%20') |
88 | ec1b8d3e | Sofia Papagiannaki | |
89 | 3f5b02c7 | Sofia Papagiannaki | kwargs = {} |
90 | 3f5b02c7 | Sofia Papagiannaki | kwargs['headers'] = headers or {} |
91 | ec1b8d3e | Sofia Papagiannaki | if not headers or \ |
92 | ec1b8d3e | Sofia Papagiannaki | 'Transfer-Encoding' not in headers \ |
93 | ec1b8d3e | Sofia Papagiannaki | or headers['Transfer-Encoding'] != 'chunked': |
94 | ec1b8d3e | Sofia Papagiannaki | kwargs['headers']['Content-Length'] = len(body) if body else 0 |
95 | 3f5b02c7 | Sofia Papagiannaki | if body:
|
96 | 3f5b02c7 | Sofia Papagiannaki | kwargs['body'] = body
|
97 | 3f5b02c7 | Sofia Papagiannaki | kwargs['headers']['Content-Type'] = 'application/octet-stream' |
98 | ec1b8d3e | Sofia Papagiannaki | #print '****', method, full_path, kwargs
|
99 | 0ea1dcc4 | Sofia Papagiannaki | #TODO catch socket.error
|
100 | ec1b8d3e | Sofia Papagiannaki | conn.request(method, full_path, **kwargs) |
101 | 3f5b02c7 | Sofia Papagiannaki | resp = conn.getresponse() |
102 | 3f5b02c7 | Sofia Papagiannaki | headers = dict(resp.getheaders())
|
103 | 3f5b02c7 | Sofia Papagiannaki | |
104 | 3f5b02c7 | Sofia Papagiannaki | if self.verbose: |
105 | 3f5b02c7 | Sofia Papagiannaki | print '%d %s' % (resp.status, resp.reason) |
106 | 3f5b02c7 | Sofia Papagiannaki | for key, val in headers.items(): |
107 | 3f5b02c7 | Sofia Papagiannaki | print '%s: %s' % (key.capitalize(), val) |
108 | 3f5b02c7 | Sofia Papagiannaki | print
|
109 | 3f5b02c7 | Sofia Papagiannaki | |
110 | 3f5b02c7 | Sofia Papagiannaki | data = resp.read() |
111 | 3f5b02c7 | Sofia Papagiannaki | if self.debug: |
112 | 3f5b02c7 | Sofia Papagiannaki | print data
|
113 | 3f5b02c7 | Sofia Papagiannaki | print
|
114 | 3f5b02c7 | Sofia Papagiannaki | |
115 | d2d5c360 | Sofia Papagiannaki | if data:
|
116 | d2d5c360 | Sofia Papagiannaki | assert data[-1] == '\n' |
117 | d2d5c360 | Sofia Papagiannaki | #remove trailing enter
|
118 | d2d5c360 | Sofia Papagiannaki | data = data and data[:-1] or data |
119 | d2d5c360 | Sofia Papagiannaki | |
120 | 3f5b02c7 | Sofia Papagiannaki | return resp.status, headers, data
|
121 | ec1b8d3e | Sofia Papagiannaki | |
122 | 3f5b02c7 | Sofia Papagiannaki | def delete(self, path, format='text'): |
123 | 3f5b02c7 | Sofia Papagiannaki | return self.req('DELETE', path, format=format) |
124 | ec1b8d3e | Sofia Papagiannaki | |
125 | 3f5b02c7 | Sofia Papagiannaki | def get(self, path, format='text', headers=None, params=None): |
126 | 3f5b02c7 | Sofia Papagiannaki | return self.req('GET', path, headers=headers, format=format, |
127 | ec1b8d3e | Sofia Papagiannaki | params=params) |
128 | ec1b8d3e | Sofia Papagiannaki | |
129 | d2d5c360 | Sofia Papagiannaki | def head(self, path, format='text', params=None): |
130 | d2d5c360 | Sofia Papagiannaki | return self.req('HEAD', path, format=format, params=params) |
131 | ec1b8d3e | Sofia Papagiannaki | |
132 | 3f5b02c7 | Sofia Papagiannaki | def post(self, path, body=None, format='text', headers=None): |
133 | 3f5b02c7 | Sofia Papagiannaki | return self.req('POST', path, body, headers=headers, format=format) |
134 | ec1b8d3e | Sofia Papagiannaki | |
135 | 3f5b02c7 | Sofia Papagiannaki | def put(self, path, body=None, format='text', headers=None): |
136 | 3f5b02c7 | Sofia Papagiannaki | return self.req('PUT', path, body, headers=headers, format=format) |
137 | ec1b8d3e | Sofia Papagiannaki | |
138 | 3f5b02c7 | Sofia Papagiannaki | def _list(self, path, detail=False, params=None, headers=None): |
139 | 3f5b02c7 | Sofia Papagiannaki | format = 'json' if detail else 'text' |
140 | 3f5b02c7 | Sofia Papagiannaki | status, headers, data = self.get(path, format=format, headers=headers,
|
141 | 3f5b02c7 | Sofia Papagiannaki | params=params) |
142 | ec1b8d3e | Sofia Papagiannaki | if detail:
|
143 | ec1b8d3e | Sofia Papagiannaki | data = json.loads(data) |
144 | ec1b8d3e | Sofia Papagiannaki | else:
|
145 | b41a95a0 | Sofia Papagiannaki | data = data.strip().split('\n')
|
146 | 3f5b02c7 | Sofia Papagiannaki | return data
|
147 | ec1b8d3e | Sofia Papagiannaki | |
148 | d2d5c360 | Sofia Papagiannaki | def _get_metadata(self, path, prefix=None, params=None): |
149 | d2d5c360 | Sofia Papagiannaki | status, headers, data = self.head(path, params=params)
|
150 | ec1b8d3e | Sofia Papagiannaki | if status == '404': |
151 | ec1b8d3e | Sofia Papagiannaki | return None |
152 | 0ea1dcc4 | Sofia Papagiannaki | prefixlen = prefix and len(prefix) or 0 |
153 | 3f5b02c7 | Sofia Papagiannaki | meta = {} |
154 | 3f5b02c7 | Sofia Papagiannaki | for key, val in headers.items(): |
155 | 0ea1dcc4 | Sofia Papagiannaki | if prefix and not key.startswith(prefix): |
156 | 0ea1dcc4 | Sofia Papagiannaki | continue
|
157 | 0ea1dcc4 | Sofia Papagiannaki | elif prefix and key.startswith(prefix): |
158 | 3f5b02c7 | Sofia Papagiannaki | key = key[prefixlen:] |
159 | 0ea1dcc4 | Sofia Papagiannaki | meta[key] = val |
160 | 3f5b02c7 | Sofia Papagiannaki | return meta
|
161 | ec1b8d3e | Sofia Papagiannaki | |
162 | 3f5b02c7 | Sofia Papagiannaki | def _set_metadata(self, path, entity, **meta): |
163 | 3f5b02c7 | Sofia Papagiannaki | headers = {} |
164 | 3f5b02c7 | Sofia Papagiannaki | for key, val in meta.items(): |
165 | 3f5b02c7 | Sofia Papagiannaki | http_key = 'X-%s-Meta-%s' %(entity.capitalize(), key.capitalize())
|
166 | 3f5b02c7 | Sofia Papagiannaki | headers[http_key] = val |
167 | 3f5b02c7 | Sofia Papagiannaki | self.post(path, headers=headers)
|
168 | 3f5b02c7 | Sofia Papagiannaki | |
169 | 3f5b02c7 | Sofia Papagiannaki | # Storage Account Services
|
170 | ec1b8d3e | Sofia Papagiannaki | |
171 | ec1b8d3e | Sofia Papagiannaki | def list_containers(self, detail=False, params=None, headers=None): |
172 | 3f5b02c7 | Sofia Papagiannaki | return self._list('', detail, params, headers) |
173 | ec1b8d3e | Sofia Papagiannaki | |
174 | d2d5c360 | Sofia Papagiannaki | def account_metadata(self, restricted=False, until=None): |
175 | 0ea1dcc4 | Sofia Papagiannaki | prefix = restricted and 'x-account-meta-' or None |
176 | d2d5c360 | Sofia Papagiannaki | params = until and {'until':until} or None |
177 | d2d5c360 | Sofia Papagiannaki | return self._get_metadata('', prefix, params=params) |
178 | 3f5b02c7 | Sofia Papagiannaki | |
179 | 3f5b02c7 | Sofia Papagiannaki | def update_account_metadata(self, **meta): |
180 | 3f5b02c7 | Sofia Papagiannaki | self._set_metadata('', 'account', **meta) |
181 | ec1b8d3e | Sofia Papagiannaki | |
182 | 3f5b02c7 | Sofia Papagiannaki | # Storage Container Services
|
183 | ec1b8d3e | Sofia Papagiannaki | |
184 | ec1b8d3e | Sofia Papagiannaki | def list_objects(self, container, detail=False, params=None, headers=None): |
185 | ec1b8d3e | Sofia Papagiannaki | return self._list('/' + container, detail, params, headers) |
186 | ec1b8d3e | Sofia Papagiannaki | |
187 | ec1b8d3e | Sofia Papagiannaki | def create_container(self, container, headers=None): |
188 | ec1b8d3e | Sofia Papagiannaki | status, header, data = self.put('/' + container, headers=headers) |
189 | 3f5b02c7 | Sofia Papagiannaki | if status == 202: |
190 | 3f5b02c7 | Sofia Papagiannaki | return False |
191 | 3f5b02c7 | Sofia Papagiannaki | elif status != 201: |
192 | 3f5b02c7 | Sofia Papagiannaki | raise Fault(data)
|
193 | 3f5b02c7 | Sofia Papagiannaki | return True |
194 | ec1b8d3e | Sofia Papagiannaki | |
195 | 3f5b02c7 | Sofia Papagiannaki | def delete_container(self, container): |
196 | 3f5b02c7 | Sofia Papagiannaki | self.delete('/' + container) |
197 | ec1b8d3e | Sofia Papagiannaki | |
198 | d2d5c360 | Sofia Papagiannaki | def retrieve_container_metadata(self, container, restricted=False, |
199 | d2d5c360 | Sofia Papagiannaki | until=None):
|
200 | 0ea1dcc4 | Sofia Papagiannaki | prefix = restricted and 'x-container-meta-' or None |
201 | d2d5c360 | Sofia Papagiannaki | params = until and {'until':until} or None |
202 | d2d5c360 | Sofia Papagiannaki | return self._get_metadata('/%s' % container, prefix, params=params) |
203 | 3f5b02c7 | Sofia Papagiannaki | |
204 | 3f5b02c7 | Sofia Papagiannaki | def update_container_metadata(self, container, **meta): |
205 | 3f5b02c7 | Sofia Papagiannaki | self._set_metadata('/' + container, 'container', **meta) |
206 | ec1b8d3e | Sofia Papagiannaki | |
207 | 3f5b02c7 | Sofia Papagiannaki | # Storage Object Services
|
208 | ec1b8d3e | Sofia Papagiannaki | |
209 | ec1b8d3e | Sofia Papagiannaki | def retrieve_object(self, container, object, detail=False, headers=None): |
210 | 3f5b02c7 | Sofia Papagiannaki | path = '/%s/%s' % (container, object) |
211 | ec1b8d3e | Sofia Papagiannaki | format = 'json' if detail else 'text' |
212 | ec1b8d3e | Sofia Papagiannaki | status, headers, data = self.get(path, format, headers)
|
213 | 3f5b02c7 | Sofia Papagiannaki | return data
|
214 | ec1b8d3e | Sofia Papagiannaki | |
215 | ec1b8d3e | Sofia Papagiannaki | def create_object(self, container, object, f=stdin, chunked=False, |
216 | ec1b8d3e | Sofia Papagiannaki | blocksize=1024, headers=None): |
217 | d2d5c360 | Sofia Papagiannaki | """
|
218 | d2d5c360 | Sofia Papagiannaki | creates an object
|
219 | d2d5c360 | Sofia Papagiannaki | if f is None then creates a zero length object
|
220 | d2d5c360 | Sofia Papagiannaki | if f is stdin or chunked is set then performs chunked transfer
|
221 | d2d5c360 | Sofia Papagiannaki | """
|
222 | 3f5b02c7 | Sofia Papagiannaki | path = '/%s/%s' % (container, object) |
223 | ec1b8d3e | Sofia Papagiannaki | if not chunked and f != stdin: |
224 | d2d5c360 | Sofia Papagiannaki | data = f and f.read() or None |
225 | ec1b8d3e | Sofia Papagiannaki | self.put(path, data, headers=headers)
|
226 | ec1b8d3e | Sofia Papagiannaki | else:
|
227 | ec1b8d3e | Sofia Papagiannaki | self._chunked_transfer(path, 'PUT', f, headers=headers, |
228 | ec1b8d3e | Sofia Papagiannaki | blocksize=1024)
|
229 | ec1b8d3e | Sofia Papagiannaki | |
230 | ec1b8d3e | Sofia Papagiannaki | def update_object(self, container, object, f=stdin, chunked=False, |
231 | ec1b8d3e | Sofia Papagiannaki | blocksize=1024, headers=None): |
232 | ec1b8d3e | Sofia Papagiannaki | if not f: |
233 | ec1b8d3e | Sofia Papagiannaki | return
|
234 | ec1b8d3e | Sofia Papagiannaki | path = '/%s/%s' % (container, object) |
235 | ec1b8d3e | Sofia Papagiannaki | if not chunked and f != stdin: |
236 | ec1b8d3e | Sofia Papagiannaki | data = f.read() |
237 | ec1b8d3e | Sofia Papagiannaki | self.post(path, data, headers=headers)
|
238 | ec1b8d3e | Sofia Papagiannaki | else:
|
239 | ec1b8d3e | Sofia Papagiannaki | self._chunked_transfer(path, 'POST', f, headers=headers, |
240 | ec1b8d3e | Sofia Papagiannaki | blocksize=1024)
|
241 | ec1b8d3e | Sofia Papagiannaki | |
242 | ec1b8d3e | Sofia Papagiannaki | def _change_obj_location(self, src_container, src_object, dst_container, |
243 | ec1b8d3e | Sofia Papagiannaki | dst_object, remove=False):
|
244 | 3f5b02c7 | Sofia Papagiannaki | path = '/%s/%s' % (dst_container, dst_object)
|
245 | 3f5b02c7 | Sofia Papagiannaki | headers = {} |
246 | ec1b8d3e | Sofia Papagiannaki | if remove:
|
247 | ec1b8d3e | Sofia Papagiannaki | headers['X-Move-From'] = '/%s/%s' % (src_container, src_object) |
248 | ec1b8d3e | Sofia Papagiannaki | else:
|
249 | ec1b8d3e | Sofia Papagiannaki | headers['X-Copy-From'] = '/%s/%s' % (src_container, src_object) |
250 | 3f5b02c7 | Sofia Papagiannaki | headers['Content-Length'] = 0 |
251 | 3f5b02c7 | Sofia Papagiannaki | self.put(path, headers=headers)
|
252 | ec1b8d3e | Sofia Papagiannaki | |
253 | ec1b8d3e | Sofia Papagiannaki | def copy_object(self, src_container, src_object, dst_container, |
254 | ec1b8d3e | Sofia Papagiannaki | dst_object): |
255 | ec1b8d3e | Sofia Papagiannaki | self._change_obj_location(src_container, src_object,
|
256 | ec1b8d3e | Sofia Papagiannaki | dst_container, dst_object) |
257 | ec1b8d3e | Sofia Papagiannaki | |
258 | ec1b8d3e | Sofia Papagiannaki | def move_object(self, src_container, src_object, dst_container, |
259 | ec1b8d3e | Sofia Papagiannaki | dst_object): |
260 | ec1b8d3e | Sofia Papagiannaki | self._change_obj_location(src_container, src_object,
|
261 | ec1b8d3e | Sofia Papagiannaki | dst_container, dst_object, True)
|
262 | ec1b8d3e | Sofia Papagiannaki | |
263 | 3f5b02c7 | Sofia Papagiannaki | def delete_object(self, container, object): |
264 | 3f5b02c7 | Sofia Papagiannaki | self.delete('/%s/%s' % (container, object)) |
265 | ec1b8d3e | Sofia Papagiannaki | |
266 | 0ea1dcc4 | Sofia Papagiannaki | def retrieve_object_metadata(self, container, object, restricted=False): |
267 | 3f5b02c7 | Sofia Papagiannaki | path = '/%s/%s' % (container, object) |
268 | 0ea1dcc4 | Sofia Papagiannaki | prefix = restricted and 'x-object-meta-' or None |
269 | 0ea1dcc4 | Sofia Papagiannaki | return self._get_metadata(path, prefix) |
270 | ec1b8d3e | Sofia Papagiannaki | |
271 | 3f5b02c7 | Sofia Papagiannaki | def update_object_metadata(self, container, object, **meta): |
272 | 3f5b02c7 | Sofia Papagiannaki | path = '/%s/%s' % (container, object) |
273 | 3f5b02c7 | Sofia Papagiannaki | self._set_metadata(path, 'object', **meta) |