kopia lustrzana https://github.com/openmaptiles/openmaptiles
Add first prototype of layer tool
rodzic
85e2ce0a83
commit
ad5d53ad19
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#!/usr/bin/env python
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"""
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Usage:
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omtgen tm2source <tileset> [--host=<host>] [--port=<port>] [--database=<dbname>] [--user=<user>] [--password=<pw>]
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omtgen --help
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omtgen --version
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Options:
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--help Show this screen.
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--version Show version.
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--host=<host> PostGIS host.
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--port=<port> PostGIS port.
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--database=<dbname> PostGIS database name.
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--user=<user> PostGIS user.
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--password=<pw> PostGIS password.
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"""
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import sys
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import yaml
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import collections
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from docopt import docopt
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DbParams = collections.namedtuple('DbParams', ['dbname', 'host', 'port',
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'password', 'user'])
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def generate_layer(layer_def, db_params):
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layer = layer_def['layer']
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datasource = layer['datasource']
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tm2layer = {
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'id': layer['id'],
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'description': layer['description'],
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'srs': layer['srs'],
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'properties': {
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'buffer-size': layer['buffer_size']
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},
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'fields': layer['fields'],
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'Datasource': {
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'extent': [-20037508.34, -20037508.34, 20037508.34, 20037508.34],
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'geometry_field': datasource.get('geometry_field', 'geom'),
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'key_field': datasource.get('key_field', ''),
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'key_field_as_attribute': datasource.get('key_field_as_attribute', ''),
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'max_size': datasource.get('max_size', 512),
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'port': db_params.port,
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'srid': datasource['srid'],
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'table': datasource['query'],
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'type': 'postgis',
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'host': db_params.host,
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'dbname': db_params.dbname,
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'user': db_params.user,
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'password': db_params.password,
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}
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}
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return tm2layer
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def generate_tm2source(tileset_filename, db_params):
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with open(tileset_filename, 'r') as stream:
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try:
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tileset = yaml.load(stream)['tileset']
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except yaml.YAMLError as e:
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print('Could not parse ' + tileset_filename)
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print(e)
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sys.exit(403)
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tm2 = {
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'attribution': tileset['attribution'],
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'center': tileset['center'],
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'description': tileset['description'],
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'maxzoom': tileset['maxzoom'],
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'minzoom': tileset['minzoom'],
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'name': tileset['name'],
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'Layer': [],
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}
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for layer_filename in tileset['layers']:
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with open(layer_filename, 'r') as stream:
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try:
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layer_def = yaml.load(stream)
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tm2layer = generate_layer(layer_def, db_params)
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tm2['Layer'].append(tm2layer)
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except yaml.YAMLError as e:
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print('Could not parse ' + layer_filename)
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print(e)
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sys.exit(403)
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return tm2
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if __name__ == '__main__':
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args = docopt(__doc__, version=0.1)
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if args.get('tm2source'):
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db_params = DbParams(
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dbname=args['--database'],
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port=int(args['--port']),
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user=args['--user'],
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password=args['--password'],
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host=args['--host']
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)
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tm2 = generate_tm2source(args['<tileset>'], db_params)
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print(yaml.dump(tm2))
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