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Diffstat (limited to 'u1db/remote/http_target.py')
| -rw-r--r-- | u1db/remote/http_target.py | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/u1db/remote/http_target.py b/u1db/remote/http_target.py deleted file mode 100644 index 1028963e..00000000 --- a/u1db/remote/http_target.py +++ /dev/null @@ -1,135 +0,0 @@ -# Copyright 2011-2012 Canonical Ltd. -# -# This file is part of u1db. -# -# u1db is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 -# as published by the Free Software Foundation. -# -# u1db is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with u1db. If not, see <http://www.gnu.org/licenses/>. - -"""SyncTarget API implementation to a remote HTTP server.""" - -try: - import simplejson as json -except ImportError: - import json # noqa - -from u1db import ( - Document, - SyncTarget, - ) -from u1db.errors import ( - BrokenSyncStream, - ) -from u1db.remote import ( - http_client, - utils, - ) - - -class HTTPSyncTarget(http_client.HTTPClientBase, SyncTarget): - """Implement the SyncTarget api to a remote HTTP server.""" - - @staticmethod - def connect(url): - return HTTPSyncTarget(url) - - def get_sync_info(self, source_replica_uid): - self._ensure_connection() - res, _ = self._request_json('GET', ['sync-from', source_replica_uid]) - return (res['target_replica_uid'], res['target_replica_generation'], - res['target_replica_transaction_id'], - res['source_replica_generation'], res['source_transaction_id']) - - def record_sync_info(self, source_replica_uid, source_replica_generation, - source_transaction_id): - self._ensure_connection() - if self._trace_hook: # for tests - self._trace_hook('record_sync_info') - self._request_json('PUT', ['sync-from', source_replica_uid], {}, - {'generation': source_replica_generation, - 'transaction_id': source_transaction_id}) - - def _parse_sync_stream(self, data, return_doc_cb, ensure_callback=None): - parts = data.splitlines() # one at a time - if not parts or parts[0] != '[': - raise BrokenSyncStream - data = parts[1:-1] - comma = False - if data: - line, comma = utils.check_and_strip_comma(data[0]) - res = json.loads(line) - if ensure_callback and 'replica_uid' in res: - ensure_callback(res['replica_uid']) - for entry in data[1:]: - if not comma: # missing in between comma - raise BrokenSyncStream - line, comma = utils.check_and_strip_comma(entry) - entry = json.loads(line) - doc = Document(entry['id'], entry['rev'], entry['content']) - return_doc_cb(doc, entry['gen'], entry['trans_id']) - if parts[-1] != ']': - try: - partdic = json.loads(parts[-1]) - except ValueError: - pass - else: - if isinstance(partdic, dict): - self._error(partdic) - raise BrokenSyncStream - if not data or comma: # no entries or bad extra comma - raise BrokenSyncStream - return res - - def sync_exchange(self, docs_by_generations, source_replica_uid, - last_known_generation, last_known_trans_id, - return_doc_cb, ensure_callback=None): - self._ensure_connection() - if self._trace_hook: # for tests - self._trace_hook('sync_exchange') - url = '%s/sync-from/%s' % (self._url.path, source_replica_uid) - self._conn.putrequest('POST', url) - self._conn.putheader('content-type', 'application/x-u1db-sync-stream') - for header_name, header_value in self._sign_request('POST', url, {}): - self._conn.putheader(header_name, header_value) - entries = ['['] - size = 1 - - def prepare(**dic): - entry = comma + '\r\n' + json.dumps(dic) - entries.append(entry) - return len(entry) - - comma = '' - size += prepare( - last_known_generation=last_known_generation, - last_known_trans_id=last_known_trans_id, - ensure=ensure_callback is not None) - comma = ',' - for doc, gen, trans_id in docs_by_generations: - size += prepare(id=doc.doc_id, rev=doc.rev, content=doc.get_json(), - gen=gen, trans_id=trans_id) - entries.append('\r\n]') - size += len(entries[-1]) - self._conn.putheader('content-length', str(size)) - self._conn.endheaders() - for entry in entries: - self._conn.send(entry) - entries = None - data, _ = self._response() - res = self._parse_sync_stream(data, return_doc_cb, ensure_callback) - data = None - return res['new_generation'], res['new_transaction_id'] - - # for tests - _trace_hook = None - - def _set_trace_hook_shallow(self, cb): - self._trace_hook = cb |