RAHHH

backend/lib/python3.12/site-packages/autobahn/twisted/xbr/__init__.py

@@ -0,0 +1,107 @@
+###############################################################################
+#
+# The MIT License (MIT)
+#
+# Copyright (c) typedef int GmbH
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+#
+###############################################################################
+
+import sys
+
+try:
+    from autobahn import xbr  # noqa
+    HAS_XBR = True
+except ImportError as e:
+    sys.stderr.write('WARNING: could not import autobahn.xbr - {}\n'.format(e))
+    HAS_XBR = False
+
+
+if HAS_XBR:
+    import txaio
+    txaio.use_twisted()
+    from twisted.internet.threads import deferToThread
+    from twisted.internet.task import LoopingCall
+    from twisted.internet.defer import ensureDeferred
+
+    import uuid
+
+    from autobahn.util import hl
+    from autobahn.xbr._interfaces import IProvider, ISeller, IConsumer, IBuyer, IDelegate
+    from autobahn.xbr import _seller, _buyer, _blockchain
+
+    class SimpleBlockchain(_blockchain.SimpleBlockchain):
+        log = txaio.make_logger()
+        backgroundCaller = deferToThread
+
+    class KeySeries(_seller.KeySeries):
+        log = txaio.make_logger()
+
+        def __init__(self, api_id, price, interval=None, count=None, on_rotate=None):
+            super().__init__(api_id, price, interval, count, on_rotate)
+            self.running = False
+            self._run_loop = None
+            self._started = None
+
+        async def start(self):
+            """
+            Start offering and selling data encryption keys in the background.
+            """
+            assert self._run_loop is None
+
+            self.log.info('Starting key rotation every {interval} seconds for api_id="{api_id}" ..',
+                          interval=hl(self._interval), api_id=hl(uuid.UUID(bytes=self._api_id)))
+
+            self.running = True
+
+            self._run_loop = LoopingCall(lambda: ensureDeferred(self._rotate()))
+            self._started = self._run_loop.start(self._interval)
+
+            return self._started
+
+        def stop(self):
+            """
+            Stop offering/selling data encryption keys.
+            """
+            if not self._run_loop:
+                raise RuntimeError('cannot stop {} - not currently running'.format(self.__class__.__name__))
+
+            self._run_loop.stop()
+            self._run_loop = None
+
+            return self._started
+
+    class SimpleSeller(_seller.SimpleSeller):
+        """
+        Simple XBR seller component. This component can be used by a XBR seller delegate to
+        handle the automated selling of data encryption keys to the XBR market maker.
+        """
+        log = txaio.make_logger()
+        KeySeries = KeySeries
+
+    class SimpleBuyer(_buyer.SimpleBuyer):
+        log = txaio.make_logger()
+
+    ISeller.register(SimpleSeller)
+    IProvider.register(SimpleSeller)
+    IDelegate.register(SimpleSeller)
+    IBuyer.register(SimpleBuyer)
+    IConsumer.register(SimpleBuyer)
+    IDelegate.register(SimpleBuyer)