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60 lines
2.0 KiB
60 lines
2.0 KiB
#
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# Copyright (C) 2015 GNS3 Technologies Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import asyncio
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import aiohttp
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from ...web.route import Route
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from ...schemas.file import FILE_STREAM_SCHEMA
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class FileHandler:
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@classmethod
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@Route.get(
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r"/files/stream",
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description="Stream a file from the server",
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status_codes={
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200: "File retrieved",
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404: "File doesn't exist",
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409: "Can't access to file"
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},
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input=FILE_STREAM_SCHEMA
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)
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def read(request, response):
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response.enable_chunked_encoding()
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try:
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with open(request.json.get("location"), "rb") as f:
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loop = asyncio.get_event_loop()
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response.content_type = "application/octet-stream"
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response.set_status(200)
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# Very important: do not send a content lenght otherwise QT close the connection but curl can consume the Feed
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response.content_length = None
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response.start(request)
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while True:
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data = yield from loop.run_in_executor(None, f.read, 16)
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if len(data) == 0:
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yield from asyncio.sleep(0.1)
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else:
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response.write(data)
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except FileNotFoundError:
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raise aiohttp.web.HTTPNotFound()
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except OSError as e:
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raise aiohttp.web.HTTPConflict(text=str(e))
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