gns3-server/gns3server/handlers/api/controller/symbol_handler.py
2021-04-08 21:27:05 +02:00

154 lines
5.1 KiB
Python

#!/usr/bin/env python
#
# Copyright (C) 2016 GNS3 Technologies Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
import aiohttp
import asyncio
import urllib.parse
import xml.etree.ElementTree as ET
from gns3server.web.route import Route
from gns3server.controller import Controller
import logging
log = logging.getLogger(__name__)
class SymbolHandler:
"""
API entry points for symbols management.
"""
@Route.get(
r"/symbols",
description="List of symbols",
status_codes={
200: "Symbols list returned"
})
def list(request, response):
controller = Controller.instance()
response.json(controller.symbols.list())
@Route.get(
r"/symbols/{symbol_id:.+}/dimensions",
description="Get the symbol dimensions",
status_codes={
200: "Symbol dimensions returned"
})
async def raw(request, response):
controller = Controller.instance()
symbol_id = urllib.parse.unquote(request.match_info["symbol_id"])
try:
file_content = open(controller.symbols.get_path(symbol_id), 'r').read()
svg_root = ET.fromstring(file_content)
svg_width = svg_root.get('width')
if svg_width is not None:
try:
width = int(float(svg_width))
except:
log.warning("Could not get width for symbol with id: {}".format(symbol_id))
width = 0
svg_height = svg_root.get('height')
if svg_height is not None:
try:
height = int(float(svg_height))
except:
log.warning("Could not get height for symbol with id: {}".format(symbol_id))
height = 0
symbol_dimensions = { 'width': width, 'height': height }
response.json(symbol_dimensions)
except (KeyError, OSError) as e:
log.warning("Could not get symbol file: {}".format(e))
response.set_status(404)
@Route.get(
r"/symbols/{symbol_id:.+}/raw",
description="Get the symbol file",
status_codes={
200: "Symbol returned"
})
async def raw(request, response):
controller = Controller.instance()
symbol_id = urllib.parse.unquote(request.match_info["symbol_id"])
try:
await response.stream_file(controller.symbols.get_path(symbol_id))
except (KeyError, OSError) as e:
log.warning("Could not get symbol file: {}".format(e))
response.set_status(404)
@Route.post(
r"/symbols/{symbol_id:.+}/raw",
description="Write the symbol file",
status_codes={
200: "Symbol written"
},
raw=True)
async def upload(request, response):
controller = Controller.instance()
symbol_id = urllib.parse.unquote(request.match_info["symbol_id"])
path = os.path.join(controller.symbols.symbols_path(), os.path.basename(symbol_id))
try:
with open(path, "wb") as f:
while True:
try:
chunk = await request.content.read(1024)
except asyncio.TimeoutError:
raise aiohttp.web.HTTPRequestTimeout(text="Timeout when writing to symbol '{}'".format(path))
if not chunk:
break
f.write(chunk)
except (UnicodeEncodeError, OSError) as e:
raise aiohttp.web.HTTPConflict(text="Could not write symbol file '{}': {}".format(path, e))
# Reset the symbol list
controller.symbols.list()
response.set_status(204)
@Route.get(
r"/default_symbols",
description="List of default symbols",
status_codes={
200: "Default symbols list returned"
})
def list_default_symbols(request, response):
controller = Controller.instance()
response.json(controller.symbols.default_symbols())
# @Route.post(
# r"/symbol_theme",
# description="Create a new symbol theme",
# status_codes={
# 201: "Appliance created",
# 400: "Invalid request"
# },
# input=APPLIANCE_CREATE_SCHEMA,
# output=APPLIANCE_OBJECT_SCHEMA)
# def create(request, response):
#
# controller = Controller.instance()
# appliance = controller.add_appliance(request.json)
# response.set_status(201)
# response.json(appliance)