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@@ -7,7 +7,7 @@ from PyQt5.QtNetwork import QHttpMultiPart, QHttpPart, QNetworkRequest, QNetwork
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from PyQt5.QtCore import pyqtProperty, pyqtSignal, pyqtSlot, QObject, QTimer, pyqtSignal, QUrl
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from time import time
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-from typing import Callable, Any
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+from typing import Callable, Any, Optional
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from enum import IntEnum
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@@ -39,6 +39,8 @@ class NetworkedPrinterOutputDevice(PrinterOutputDevice):
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self._onFinishedCallbacks = {}
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self._authentication_state = AuthState.NotAuthenticated
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+ self._cached_multiparts = {}
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+
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def setAuthenticationState(self, authentication_state):
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if self._authentication_state != authentication_state:
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self._authentication_state = authentication_state
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@@ -79,29 +81,35 @@ class NetworkedPrinterOutputDevice(PrinterOutputDevice):
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request.setHeader(QNetworkRequest.UserAgentHeader, self._user_agent)
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return request
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- def _put(self, target: str, data: str, onFinished: Callable[[Any, QNetworkReply], None]):
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+ def _clearCachedMultiPart(self, reply):
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+ if id(reply) in self._cached_multiparts:
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+ del self._cached_multiparts[id(reply)]
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+
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+ def _put(self, target: str, data: str, onFinished: Optional[Callable[[Any, QNetworkReply], None]]):
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if self._manager is None:
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self._createNetworkManager()
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request = self._createEmptyRequest(target)
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self._last_request_time = time()
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reply = self._manager.put(request, data.encode())
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- self._onFinishedCallbacks[reply.url().toString() + str(reply.operation())] = onFinished
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+ if onFinished is not None:
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+ self._onFinishedCallbacks[reply.url().toString() + str(reply.operation())] = onFinished
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- def _get(self, target: str, onFinished: Callable[[Any, QNetworkReply], None]):
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+ def _get(self, target: str, onFinished: Optional[Callable[[Any, QNetworkReply], None]]):
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if self._manager is None:
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self._createNetworkManager()
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request = self._createEmptyRequest(target)
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self._last_request_time = time()
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reply = self._manager.get(request)
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- self._onFinishedCallbacks[reply.url().toString() + str(reply.operation())] = onFinished
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+ if onFinished is not None:
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+ self._onFinishedCallbacks[reply.url().toString() + str(reply.operation())] = onFinished
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- def _delete(self, target: str, onFinished: Callable[[Any, QNetworkReply], None]):
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+ def _delete(self, target: str, onFinished: Optional[Callable[[Any, QNetworkReply], None]]):
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if self._manager is None:
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self._createNetworkManager()
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self._last_request_time = time()
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pass
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- def _post(self, target: str, data: str, onFinished: Callable[[Any, QNetworkReply], None], onProgress: Callable = None):
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+ def _post(self, target: str, data: str, onFinished: Optional[Callable[[Any, QNetworkReply], None]], onProgress: Callable = None):
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if self._manager is None:
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self._createNetworkManager()
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request = self._createEmptyRequest(target)
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@@ -109,7 +117,31 @@ class NetworkedPrinterOutputDevice(PrinterOutputDevice):
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reply = self._manager.post(request, data)
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if onProgress is not None:
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reply.uploadProgress.connect(onProgress)
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- self._onFinishedCallbacks[reply.url().toString() + str(reply.operation())] = onFinished
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+ if onFinished is not None:
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+ self._onFinishedCallbacks[reply.url().toString() + str(reply.operation())] = onFinished
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+
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+ def _postForm(self, target: str, header_data: str, body_data: bytes, onFinished: Optional[Callable[[Any, QNetworkReply], None]], onProgress: Callable = None):
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+ if self._manager is None:
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+ self._createNetworkManager()
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+ request = self._createEmptyRequest(target)
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+
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+ multi_post_part = QHttpMultiPart()
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+ post_part = QHttpPart()
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+ post_part.setHeader(QNetworkRequest.ContentDispositionHeader, header_data)
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+ post_part.setBody(body_data)
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+ multi_post_part.append(post_part)
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+
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+ self._last_request_time = time()
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+
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+ reply = self._manager.post(request, multi_post_part)
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+
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+ # Due to garbage collection on python doing some weird stuff, we need to keep hold of a reference
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+ self._cached_multiparts[id(reply)] = (post_part, multi_post_part, reply)
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+
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+ if onProgress is not None:
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+ reply.uploadProgress.connect(onProgress)
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+ if onFinished is not None:
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+ self._onFinishedCallbacks[reply.url().toString() + str(reply.operation())] = onFinished
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def _onAuthenticationRequired(self, reply, authenticator):
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Logger.log("w", "Request to {url} required authentication, which was not implemented".format(url = reply.url().toString()))
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@@ -128,6 +160,11 @@ class NetworkedPrinterOutputDevice(PrinterOutputDevice):
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#self._manager.networkAccessibleChanged.connect(self._onNetworkAccesibleChanged) # for debug purposes
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def __handleOnFinished(self, reply: QNetworkReply):
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+ # Due to garbage collection, we need to cache certain bits of post operations.
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+ # As we don't want to keep them around forever, delete them if we get a reply.
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+ if reply.operation() == QNetworkAccessManager.PostOperation:
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+ self._clearCachedMultiPart(reply)
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+
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if reply.attribute(QNetworkRequest.HttpStatusCodeAttribute) is None:
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# No status code means it never even reached remote.
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return
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@@ -137,8 +174,10 @@ class NetworkedPrinterOutputDevice(PrinterOutputDevice):
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if self._connection_state == ConnectionState.connecting:
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self.setConnectionState(ConnectionState.connected)
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+ callback_key = reply.url().toString() + str(reply.operation())
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try:
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- self._onFinishedCallbacks[reply.url().toString() + str(reply.operation())](reply)
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+ if callback_key in self._onFinishedCallbacks:
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+ self._onFinishedCallbacks[callback_key](reply)
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except Exception:
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Logger.logException("w", "something went wrong with callback")
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