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37 from . import ClientError
38 from .storage import StorageClient
41 class PithosClient(StorageClient):
42 """GRNet Pithos API client"""
44 def put_block(self, data):
45 path = '/%s/%s?update' % (self.account, self.container)
46 headers = {'Content-Type': 'application/octet-stream'}
47 self.raw_http_cmd('POST', path, data, headers, success=202)
49 def create_object(self, object, f):
50 meta = self.get_container_meta()
51 blocksize = int(meta['block-size'])
52 blockhash = meta['block-hash']
56 data = f.read(blocksize)
59 h = hashlib.new(blockhash)
61 hashes.append(h.hexdigest())
62 data = f.read(blocksize)
64 path = '/%s/%s/%s?hashmap&format=json' % (self.account, self.container,
66 hashmap = dict(bytes=size, hashes=hashes)
67 req = json.dumps(hashmap)
68 resp, reply = self.raw_http_cmd('PUT', path, req, success=None)
70 if resp.status not in (201, 409):
71 raise ClientError('Invalid response from the server')
73 if resp.status == 201:
76 hashes = set(reply.split())
79 data = f.read(blocksize)
81 h = hashlib.new(blockhash)
87 data = f.read(blocksize)
89 self.http_put(path, req, success=201)