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102 lines
3.5 KiB
102 lines
3.5 KiB
5 years ago
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# Copyright (c) 2014-present PlatformIO <contact@platformio.org>
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# pylint: disable=import-error
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import click
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import jsonrpc
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from autobahn.twisted.websocket import WebSocketServerFactory, WebSocketServerProtocol
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from jsonrpc.exceptions import JSONRPCDispatchException
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from twisted.internet import defer, reactor
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from platformio.compat import PY2, dump_json_to_unicode, is_bytes
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class JSONRPCServerProtocol(WebSocketServerProtocol):
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def onOpen(self):
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self.factory.connection_nums += 1
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if self.factory.shutdown_timer:
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self.factory.shutdown_timer.cancel()
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self.factory.shutdown_timer = None
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def onClose(self, wasClean, code, reason): # pylint: disable=unused-argument
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self.factory.connection_nums -= 1
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if self.factory.connection_nums == 0:
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self.factory.shutdownByTimeout()
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def onMessage(self, payload, isBinary): # pylint: disable=unused-argument
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# click.echo("> %s" % payload)
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response = jsonrpc.JSONRPCResponseManager.handle(
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payload, self.factory.dispatcher
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).data
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# if error
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if "result" not in response:
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self.sendJSONResponse(response)
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return None
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d = defer.maybeDeferred(lambda: response["result"])
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d.addCallback(self._callback, response)
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d.addErrback(self._errback, response)
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return None
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def _callback(self, result, response):
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response["result"] = result
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self.sendJSONResponse(response)
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def _errback(self, failure, response):
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if isinstance(failure.value, JSONRPCDispatchException):
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e = failure.value
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else:
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e = JSONRPCDispatchException(code=4999, message=failure.getErrorMessage())
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del response["result"]
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response["error"] = e.error._data # pylint: disable=protected-access
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self.sendJSONResponse(response)
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def sendJSONResponse(self, response):
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# click.echo("< %s" % response)
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if "error" in response:
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click.secho("Error: %s" % response["error"], fg="red", err=True)
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response = dump_json_to_unicode(response)
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if not PY2 and not is_bytes(response):
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response = response.encode("utf-8")
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self.sendMessage(response)
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class JSONRPCServerFactory(WebSocketServerFactory):
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protocol = JSONRPCServerProtocol
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connection_nums = 0
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shutdown_timer = 0
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def __init__(self, shutdown_timeout=0):
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super(JSONRPCServerFactory, self).__init__()
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self.shutdown_timeout = shutdown_timeout
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self.dispatcher = jsonrpc.Dispatcher()
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def shutdownByTimeout(self):
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if self.shutdown_timeout < 1:
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return
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def _auto_shutdown_server():
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click.echo("Automatically shutdown server on timeout")
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reactor.stop()
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self.shutdown_timer = reactor.callLater(
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self.shutdown_timeout, _auto_shutdown_server
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)
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def addHandler(self, handler, namespace):
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self.dispatcher.build_method_map(handler, prefix="%s." % namespace)
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