kopia lustrzana https://github.com/hholzgra/maposmatic/
679 wiersze
23 KiB
Python
679 wiersze
23 KiB
Python
# coding: utf-8
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# maposmatic, the web front-end of the MapOSMatic city map generation system
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# Copyright (C) 2018 Hartmut Holzgraefe
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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 Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or any later version.
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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 Affero General Public License for more details.
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# API calls for MapOSMatic
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from os import path
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import json
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from django.core.exceptions import ValidationError
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from django.core.files import File
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from django.core.files.base import ContentFile
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from django.http import HttpResponseRedirect, HttpResponseBadRequest, HttpResponseNotFound, HttpResponse, HttpResponseNotAllowed, HttpResponseForbidden, Http404
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from django.forms.models import model_to_dict
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from django.shortcuts import get_object_or_404
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from django.db import connections
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import ocitysmap
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from www.maposmatic import helpers, forms, nominatim, models
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import www.settings
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import gpxpy
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import gpxpy.gpx
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import requests
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from tempfile import NamedTemporaryFile
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import urllib.parse
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import logging
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LOG = logging.getLogger('maposmatic')
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def styles(request):
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result = {}
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for style in ocitysmap.OCitySMap().get_all_style_configurations():
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result[style.name] = { "description": style.description,
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"annotation": style.annotation,
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"preview_url": request.build_absolute_uri('/media/img/style/'+style.name+'.png')
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}
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return HttpResponse( content=json.dumps(result, indent=4, sort_keys=True, default=str), content_type='text/json')
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def overlays(request):
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result = {}
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for overlay in ocitysmap.OCitySMap().get_all_overlay_configurations():
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result[overlay.name] = { "description": overlay.description,
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"annotation": overlay.annotation,
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"preview_url": request.build_absolute_uri('/media/img/overlay/'+overlay.name+'.png')
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}
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return HttpResponse( content=json.dumps(result, indent=4, sort_keys=True, default=str), content_type='text/json')
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def paper_formats(request):
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_ocitysmap = ocitysmap.OCitySMap(www.settings.OCITYSMAP_CFG_PATH)
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result = {}
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for p in _ocitysmap.get_all_paper_sizes():
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if p[1] and p[2]:
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result[p[0]] = {'width': p[1], 'height': p[2]}
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return HttpResponse( content=json.dumps(result, indent=4, sort_keys=True, default=str), content_type='text/json')
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def layouts(request):
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result = {}
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for renderer in ocitysmap.OCitySMap().get_all_renderers():
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result[renderer.name] = { "description": renderer.description,
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"preview_url": request.build_absolute_uri('/media/img/layout/'+renderer.name+'.png')
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}
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return HttpResponse( content=json.dumps(result, indent=4, sort_keys=True, default=str), content_type='text/json')
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def job_stati_dict(id = None):
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# TODO do not hard-code these, get them from OCitysMap cleanly
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result = {
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"0": "Submitted",
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"1": "In progress",
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"2": "Done",
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"3": "Done w/o files",
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"4": "Cancelled"
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}
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if id is not None:
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return result[str(id)]
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return result
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def job_stati(request):
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return HttpResponse( content=json.dumps(job_stati_dict(), indent=4, sort_keys=True, default=str), content_type='text/json')
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def heatdata(request, days=1):
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query = """
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select round(lat::numeric, 4)::float as lat
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, round(lng::numeric, 4)::float as lng
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, count(*) as count
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from (
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select (lat_upper_left + lat_bottom_right)/2 as lat
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, (lon_upper_left + lon_bottom_right)/2 as lng
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from maposmatic_maprenderingjob
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where lat_upper_left is not null
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and submission_time BETWEEN LOCALTIMESTAMP - INTERVAL '%s days' AND LOCALTIMESTAMP
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union
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select (north + south)/2 as lat
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, (west + east)/2 as lng
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from maposmatic_maprenderingjob m
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left outer join dblink('dbname=gis', 'SELECT osm_id, west, east, north, south FROM place') AS p(osm_id bigint, west float, east float, north float, south float)
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on -m.administrative_osmid = p.osm_id
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where m.administrative_osmid is not null
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and submission_time BETWEEN LOCALTIMESTAMP - INTERVAL '%s days' AND LOCALTIMESTAMP
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) x group by lat, lng;
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;
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""" % (days, days)
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data = { "max": 8, "data": [] }
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try:
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cursor = connections['default'].cursor()
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if cursor is None:
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raise Http404("postgis: no cursor")
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cursor.execute(query)
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columns = [col[0] for col in cursor.description]
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for row in cursor.fetchall():
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data["data"].append(dict(zip(columns, row)))
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cursor.close()
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return HttpResponse(content="var data = " + json.dumps(data, indent=2),
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content_type='application/javascript')
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except Exception as e:
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raise RuntimeError(e)
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def jobs(request, job_id=False):
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"""API handler for external rendering requests"""
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if request.method == 'GET':
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return _jobs_get(request, job_id)
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elif request.method == 'POST':
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return _jobs_post(request)
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else:
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return HttpResponseNotAllowed(['GET','POST'])
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def _jobs_get(request, job_id):
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if not job_id:
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return HttpResponseNotFound('not found')
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job = get_object_or_404(models.MapRenderingJob, id=job_id)
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reply = model_to_dict(job)
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result = {}
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result['id'] = int(job_id)
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result['status'] = reply['status']
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result['status_msg'] = job_stati_dict(reply['status'])
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if reply['administrative_osmid']:
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result['osm_id'] = reply['administrative_osmid']
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else:
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result['bbox_top'] = reply['lat_upper_left']
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result['bbox_bottom'] = reply['lat_bottom_right']
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result['bbox_left'] = reply['lon_upper_left']
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result['bbox_right'] = reply['lon_bottom_right']
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result['title'] = reply['maptitle']
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result['layout'] = reply['layout']
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result['style'] = reply['stylesheet']
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if reply['overlay']:
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result['overlays'] = reply['overlay'].split(',')
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result['language'] = reply['map_language']
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result['paper_height_mm'] = reply['paper_height_mm']
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result['paper_width_mm'] = reply['paper_width_mm']
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if job.status == 0:
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result['queue_size'] = models.MapRenderingJob.objects.queue_size()
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else:
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result['queue_size'] = 0
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result['files'] = {}
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if job.status == 2:
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files = job.output_files()
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for key, val in files['maps'].items():
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result['files'][key] = request.build_absolute_uri(val[0])
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result['interactive'] = request.build_absolute_uri('../../../maps/%d' % reply['id'])
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if job.status <= 1:
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status = 202
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else:
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status = 200
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return HttpResponse( content=json.dumps(result, indent=4, sort_keys=True, default=str)
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, content_type='text/json', status=status)
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def _jobs_post(request):
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result = { "error": {} }
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job = models.MapRenderingJob()
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if request.content_type == 'application/json':
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input = json.loads(request.body.decode('utf-8-sig'))
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else:
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input = json.loads(request.POST['job'])
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valid_keys = ['osmid',
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'bbox',
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'bbox_bottom',
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'bbox_left',
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'bbox_right',
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'bbox_top',
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'extra_logo',
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'indexer',
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'min_lat',
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'max_lat',
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'min_lon',
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'max_lon',
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'import_urls',
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'language',
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'layout',
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'logo',
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'orientation',
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'overlays',
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'paper_height',
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'paper_size',
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'paper_width',
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'style',
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'title',
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'track_url',
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'umap_url'
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]
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for key in input:
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if key not in valid_keys:
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result['error'][key] = "Unknown parameter '%s'" % key
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if 'osmid' in input:
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job.administrative_osmid= input['osmid']
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elif 'bbox' in input:
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job.lat_upper_left = input['bbox'][0]
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job.lon_upper_left = input['bbox'][3]
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job.lat_bottom_right = input['bbox'][2]
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job.lon_bottom_right = input['bbox'][1]
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elif 'lat_min' in input and 'lat_max' in input and 'lon_min' in input and 'lon_max' in input:
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job.lat_upper_left = input['max_lat']
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job.lon_upper_left = input['min_lon']
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job.lat_bottom_right = input['min_lat']
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job.lon_bottom_right = input['max_lon']
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elif 'bbox_top' in input and 'bbox_bottom' in input and 'bbox_left' in input and 'bbox_right' in input:
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job.lat_upper_left = input['bbox_top']
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job.lon_upper_left = input['bbox_left']
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job.lat_bottom_right = input['bbox_bottom']
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job.lon_bottom_right = input['bbox_right']
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if 'title' in input:
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job.maptitle = input['title']
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if 'language' in input:
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job.map_language = input['language']
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else:
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job.map_language = 'en_US.UTF-8'
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if 'layout' in input:
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job.layout = input['layout']
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if 'style' in input:
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job.stylesheet = input['style']
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else:
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job.stylesheet = 'CartoOSM'
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if 'overlays' in input:
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if isinstance(input['overlays'], str):
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job.overlay = input['overlays']
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else:
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job.overlay = ",".join(input['overlays'])
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if 'indexer' in input:
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job.indexer = input['indexer']
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if 'logo' in input:
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job.logo = input['logo']
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if 'extra_logo' in input:
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job.extra_logo = input['extra_logo']
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job.paper_width_mm = 210
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job.paper_height_mm = 297
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# TODO: either both or none of width/height need to be set
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# TODO: size and width/height are mutually exclusive
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if 'paper_width' in input:
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job.paper_width_mm = input['paper_width']
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if 'paper_height' in input:
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job.paper_height_mm = input['paper_height']
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if 'paper_size' in input:
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try:
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_ocitysmap = ocitysmap.OCitySMap(www.settings.OCITYSMAP_CFG_PATH)
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p = _ocitysmap.get_paper_size_by_name(input['paper_size'])
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if 'orientation' in input:
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if input['orientation'] == 'landscape':
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p[1], p[0] = p[0], p[1]
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job.paper_width_mm = p[0]
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job.paper_height_mm = p[1]
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except LookupError as e:
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result['error']['paper_size'] = str(e)
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import_files = []
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import_urls = []
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if 'import_urls' in input:
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for import_url in input['import_urls']:
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import_urls.append(import_url)
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if 'track_url' in input:
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import_urls.append(input['track_url'])
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if 'umap_url' in input:
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import_urls.append(input['umap_url'])
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for import_url in import_urls:
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try:
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import_file = _get_remote_file(import_url)
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import_files.append(import_file)
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except Exception as e:
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result['error']['import_url'] = "Can't fetch import_url: %s" % e
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for import_file in request.FILES:
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import_files.append(request.FILES[import_file])
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processed_files = []
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if len(import_files) > 0:
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import_data = {
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'lat_bottom_right' : 90,
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'lat_upper_left' : -90,
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'lon_bottom_right' : 180,
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'lon_upper_left' : -180,
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'maptitles' : [],
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'layout' : False,
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}
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for import_file in import_files:
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try:
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filetype = ocitysmap.guess_filetype(import_file)
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if filetype == 'gpx':
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import_result = _process_gpx_file(import_file)
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elif filetype == 'poi':
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import_result = _process_poi_file(import_file)
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elif filetype == 'umap':
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import_result = _process_umap_file(import_file)
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else:
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result['error']['import_file'] = "Can't determine import file type for %s" % import_file.name
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break
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except Exception as e:
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result['error']['import_file'] = "Error processing import file: %s" % e
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break
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import_data['lat_bottom_right'] = min(import_data['lat_bottom_right'],
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import_result['lat_bottom_right'])
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import_data['lat_upper_left'] = max(import_data['lat_upper_left'],
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import_result['lat_upper_left'])
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import_data['lon_bottom_right'] = min(import_data['lon_bottom_right'],
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import_result['lon_bottom_right'])
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import_data['lon_upper_left'] = max(import_data['lon_upper_left'],
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import_result['lon_upper_left'])
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if 'maptitle' in import_result:
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import_data['maptitles'].append(import_result['maptitle'])
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if 'layout' in import_result:
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import_data['layout'] = import_result['layout']
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if 'file' in import_result:
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import_file = import_result['file']
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processed_files.append((import_result['type'], import_file))
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if not result['error']:
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if _no_geometry(job):
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job.lat_bottom_right = import_data['lat_bottom_right']
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job.lon_bottom_right = import_data['lon_bottom_right']
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job.lat_upper_left = import_data['lat_upper_left']
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job.lon_upper_left = import_data['lon_upper_left']
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if not job.maptitle:
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job.maptitle = ", ".join(import_data['maptitles'])
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if not job.layout:
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job.layout = import_data['layout']
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if _no_geometry(job):
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result['error']['geometry'] = 'No bounding box or OSM id given'
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if not job.layout:
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job.layout = 'plain'
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job.queue = 'api'
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if not result['error']:
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job.status = 0
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if www.settings.SUBMITTER_IP_LIFETIME != 0:
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job.submitterip = request.META['REMOTE_ADDR']
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else:
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job.submitterip = None
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job.index_queue_at_submission = (models.MapRenderingJob.objects.queue_size(job.queue))
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job.nonce = helpers.generate_nonce(models.MapRenderingJob.NONCE_SIZE)
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try:
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job.full_clean()
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job.save()
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if len(processed_files):
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for (file_type, file_entry) in processed_files:
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file_instance = models.UploadFile(uploaded_file = file_entry,
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file_type = file_type)
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file_instance.save()
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file_instance.job.add(job)
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reply = model_to_dict(job)
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result['id'] = reply['id']
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result['nonce'] = reply['nonce']
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result['status'] = reply['status']
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result['status_msg'] = job_stati_dict(reply['status'])
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if reply['status'] == 0:
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result['queue_size'] = models.MapRenderingJob.objects.queue_size()
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else:
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result['queue_size'] = 0
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result['files'] = {}
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result['interactive'] = request.build_absolute_uri('../../maps/%d' % reply['id'])
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if reply['administrative_osmid']:
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result['osm_id'] = reply['administrative_osmid']
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else:
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result['bbox_top'] = reply['lat_upper_left']
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result['bbox_bottom'] = reply['lat_bottom_right']
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result['bbox_left'] = reply['lon_upper_left']
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result['bbox_right'] = reply['lon_bottom_right']
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result['title'] = reply['maptitle']
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result['layout'] = reply['layout']
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result['style'] = reply['stylesheet']
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if reply['overlay']:
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result['overlays'] = reply['overlay'].split(',')
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result['language'] = reply['map_language']
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result['paper_height_mm'] = reply['paper_height_mm']
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result['paper_width_mm'] = reply['paper_width_mm']
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except ValidationError as e:
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result['error'] = e.message_dict
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except Exception as e:
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result['error']['reason'] = str(e)
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if result['error']:
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status = 400
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else:
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del result['error']
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status = 202
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return HttpResponse( content=json.dumps(result, indent=4, sort_keys=True, default=str)
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, content_type='text/json', status=status)
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def _no_geometry(job):
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return not job.administrative_osmid and not job.lat_upper_left
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def _geojson_get_bounds(coords, bounds = [180, -180, 90, -90]):
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if isinstance(coords[0], list):
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for coord in coords:
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bounds = _geojson_get_bounds(coord, bounds)
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else:
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bounds[0] = min(coords[0], bounds[0])
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bounds[1] = max(coords[0], bounds[1])
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bounds[2] = min(coords[1], bounds[2])
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bounds[3] = max(coords[1], bounds[3])
|
|
|
|
return bounds
|
|
|
|
def _get_remote_file(url):
|
|
r = requests.get(url)
|
|
with NamedTemporaryFile(delete=False) as f:
|
|
f.write(r.content)
|
|
name = path.basename(url)
|
|
if name == '':
|
|
name = path.basename(f.name)
|
|
file = File(open(f.name, "rb"), name)
|
|
file.url = url
|
|
return file
|
|
|
|
def _process_umap_file(file):
|
|
result = {'type': 'umap'}
|
|
|
|
try:
|
|
# read umap file contents
|
|
file.open()
|
|
umapjson = file.read().decode('utf-8-sig')
|
|
|
|
# parse JSON contents into python dict
|
|
umap = json.loads(umapjson)
|
|
|
|
# use umap name as map title
|
|
if umap['properties']['name']:
|
|
result['maptitle'] = umap['properties']['name']
|
|
|
|
# make sure we have a 'layers' list, there is none if Umap /geojson
|
|
# URL scheme was used ...
|
|
if not 'layers' in umap:
|
|
umap['layers'] = []
|
|
|
|
# Umap /geojson URL exports do not contain the actual data layers,
|
|
# they only list internal layer Id and name, and provide the
|
|
# necessary URL pattern to fetch the layer details
|
|
# so if a 'datalayers' list is found in the properties we need
|
|
# to download actual layer JSON and merge it into the
|
|
# 'layers' list
|
|
if hasattr(file, 'url') and 'datalayers' in umap['properties']:
|
|
# first create full layer download URL from datalayer_view information
|
|
dataview_url_template = urllib.parse.urljoin(file.url,
|
|
umap['properties']['urls']['datalayer_view'])
|
|
# now process all data layer references
|
|
for datalayer in umap['properties']['datalayers']:
|
|
# replace {pk} placeholder with actual internal layer id
|
|
dataview_url = dataview_url_template.replace('{pk}', str(datalayer['id']))
|
|
|
|
try:
|
|
# download and parse layer json file
|
|
layerfile = _get_remote_file(dataview_url)
|
|
layerjson = layerfile.read().decode('utf-8-sig')
|
|
layerdata = json.loads(layerjson)
|
|
|
|
# append downloaded layer details data to layers list
|
|
umap['layers'].append(layerdata)
|
|
except Exception as e:
|
|
raise RuntimeError('Could not fetch umap data layer %s: %s' % (datalayer['name'], e))
|
|
|
|
# if no map bounding box is specified yet:
|
|
# process all layers and merge their feature bounding boxes
|
|
# so that all umap layer features fit on the map
|
|
bounds = [180, -180, 90, -90]
|
|
for layer in umap['layers']:
|
|
for feature in layer['features']:
|
|
bounds = _geojson_get_bounds(feature['geometry']['coordinates'], bounds)
|
|
|
|
# add an extra 5% on each side so that features will not be
|
|
# placed directly on the map edge, also ensure a minimum
|
|
# non-zero size to aviod div-by-zero problems later by making
|
|
# the extra border at least about one arc second wide
|
|
d_lon = max((bounds[1] - bounds[0]) * 0.05, 0.0003)
|
|
d_lat = max((bounds[3] - bounds[2]) * 0.05, 0.0003)
|
|
|
|
result['lat_bottom_right'] = bounds[2] - d_lat
|
|
result['lat_upper_left'] = bounds[3] + d_lat
|
|
result['lon_bottom_right'] = bounds[0] - d_lon
|
|
result['lon_upper_left'] = bounds[1] + d_lon
|
|
|
|
# save potentially modified umap JSON data
|
|
result['file'] = ContentFile(json.dumps(umap, indent=4, sort_keys=True, default=str), name=file.name)
|
|
|
|
except Exception as e:
|
|
raise RuntimeError('Cannot process Umap file: %s %s' % (e, file.name))
|
|
|
|
return result
|
|
|
|
def _process_gpx_file(file):
|
|
result = {'type': 'gpx'}
|
|
|
|
try:
|
|
file.open()
|
|
gpxxml = file.read().decode('utf-8-sig')
|
|
gpx = gpxpy.parse(gpxxml)
|
|
|
|
(min_lat, max_lat, min_lon, max_lon) = gpx.get_bounds()
|
|
d_lat = (max_lat - min_lat) * 0.05
|
|
d_lon = (max_lon - min_lon) * 0.05
|
|
|
|
result['lat_bottom_right'] = min_lat - d_lat
|
|
result['lat_upper_left'] = max_lat + d_lat
|
|
result['lon_bottom_right'] = min_lon - d_lon
|
|
result['lon_upper_left'] = max_lon + d_lon
|
|
|
|
if gpx.name:
|
|
result['maptitle'] = gpx.name
|
|
|
|
except Exception as e:
|
|
raise RuntimeError('Cannot parse GPX track: %s' % e)
|
|
|
|
return result
|
|
|
|
def _process_poi_file(file):
|
|
result = {'type': 'poi'}
|
|
|
|
try:
|
|
file.open()
|
|
poijson = file.read().decode('utf-8-sig')
|
|
|
|
poi = json.loads(poijson)
|
|
|
|
if 'title' in poi:
|
|
result['maptitle'] = poi['title']
|
|
|
|
bounds = [180, -180, 90, -90]
|
|
for cat in poi['nodes']:
|
|
for node in cat['nodes']:
|
|
bounds[0] = min(float(node['lon']), bounds[0])
|
|
bounds[1] = max(float(node['lon']), bounds[1])
|
|
bounds[2] = min(float(node['lat']), bounds[2])
|
|
bounds[3] = max(float(node['lat']), bounds[3])
|
|
|
|
d_lon = (bounds[1] - bounds[0]) * 0.05
|
|
d_lat = (bounds[3] - bounds[2]) * 0.05
|
|
|
|
result['lat_bottom_right'] = bounds[2] - d_lat
|
|
result['lat_upper_left'] = bounds[3] + d_lat
|
|
result['lon_bottom_right'] = bounds[0] - d_lon
|
|
result['lon_upper_left'] = bounds[1] + d_lon
|
|
|
|
result['layout'] = 'single_page_index_side'
|
|
|
|
except Exception as e:
|
|
raise RuntimeError('Cannot parse POI file: %s' % e)
|
|
|
|
return result
|
|
|
|
def cancel_job(request):
|
|
"""API handler for canceling rendering requests"""
|
|
|
|
if request.method != 'POST':
|
|
return HttpResponseNotAllowed(['POST'])
|
|
|
|
if request.content_type == 'application/json':
|
|
input = json.loads(request.body.decode('utf-8-sig'))
|
|
else:
|
|
input = json.loads(request.POST['job'])
|
|
|
|
if not "id" in input or not "nonce" in input:
|
|
return HttpResponseBadRequest()
|
|
|
|
job = get_object_or_404(models.MapRenderingJob, id = input['id'])
|
|
|
|
reply = model_to_dict(job)
|
|
|
|
if input['nonce'] != reply['nonce']:
|
|
return HttpResponseForbidden()
|
|
|
|
if job.is_waiting():
|
|
job.cancel()
|
|
|
|
return HttpResponse(status=204)
|