def maps():
flatmap_list = []
for tile_dir in pathlib.Path(root_paths['flatmaps']).iterdir():
mbtiles = os.path.join(root_paths['flatmaps'], tile_dir,
'index.mbtiles')
if os.path.isdir(tile_dir) and os.path.exists(mbtiles):
reader = MBTilesReader(mbtiles)
try:
source_row = reader._query(
"SELECT value FROM metadata WHERE name='source';"
).fetchone()
except (InvalidFormatError, sqlite3.OperationalError):
flask.abort(404,
'Cannot read tile database: {}'.format(mbtiles))
if source_row is not None:
flatmap = {'id': tile_dir.name, 'source': source_row[0]}
created = reader._query(
"SELECT value FROM metadata WHERE name='created';"
).fetchone()
if created is not None:
flatmap['created'] = created[0]
describes = reader._query(
"SELECT value FROM metadata WHERE name='describes';"
).fetchone()
if describes is not None and describes[0]:
flatmap['describes'] = normalise_identifier(describes[0])
flatmap_list.append(flatmap)
return flask.jsonify(flatmap_list)
def tilejson(map_path, layer):
try:
mbtiles = os.path.join(
maps_root, map_path,
'{}.mbtiles'.format(layer if layer else 'index'))
reader = MBTilesReader(mbtiles)
metadata = reader.metadata()
tilejson = {}
tilejson['tilejson'] = '2.2.0'
if 'id' in metadata:
tilejson['id'] = metadata['id']
tilejson['bounds'] = [float(x) for x in metadata['bounds'].split(',')]
tilejson['center'] = [float(x) for x in metadata['center'].split(',')
] ## Ignored ??
tilejson['maxzoom'] = int(metadata['maxzoom'])
tilejson['minzoom'] = int(metadata['minzoom'])
tilejson['format'] = 'pbf'
tilejson['scheme'] = 'xyz'
tilejson['tiles'] = [
server_url('{}{}/mvtiles/{{z}}/{{x}}/{{y}}'.format(
map_path, '/{}'.format(layer) if layer else ''))
]
tilejson['vector_layers'] = json.loads(
metadata['json'])['vector_layers']
return response.json(tilejson)
except ExtractionError:
pass
except (InvalidFormatError, sqlite3.OperationalError):
exceptions.abort(404, 'Cannot read tile database')
return response.empty(status=204)
def get_metadata(map_path, name):
mbtiles = os.path.join(root_paths['flatmaps'], map_path, 'index.mbtiles')
reader = MBTilesReader(mbtiles)
try:
row = reader._query(
"SELECT value FROM metadata WHERE name='{}';".format(
name)).fetchone()
except (InvalidFormatError, sqlite3.OperationalError):
flask.abort(404, 'Cannot read tile database')
return {} if row is None else json.loads(row[0])
def image_tiles(request, map_path, layer, z, y, x):
try:
mbtiles = os.path.join(maps_root, map_path, '{}.mbtiles'.format(layer))
reader = MBTilesReader(mbtiles)
return response.raw(reader.tile(int(z), int(y), int(x)),
headers={'Content-Type': 'image/png'})
except ExtractionError:
pass
except (InvalidFormatError, sqlite3.OperationalError):
exceptions.abort(404, 'Cannot read tile database')
return response.raw(blank_tile(), headers={'Content-Type': 'image/png'})
def image_tiles(map_id, layer, z, y, x):
try:
mbtiles = os.path.join(settings['FLATMAP_ROOT'], map_id,
'{}.mbtiles'.format(layer))
reader = MBTilesReader(mbtiles)
image_bytes = io.BytesIO(reader.tile(z, x, y))
return send_bytes(image_bytes, 'image/png')
except ExtractionError:
pass
except (InvalidFormatError, sqlite3.OperationalError):
flask.abort(404, 'Cannot read tile database')
return send_bytes(blank_tile(), 'image/png')
def image_tiles(map_path, layer, z, y, x):
try:
mbtiles = os.path.join(root_paths['flatmaps'], map_path,
'{}.mbtiles'.format(layer))
reader = MBTilesReader(mbtiles)
return flask.send_file(io.BytesIO(reader.tile(z, x, y)),
mimetype='image/png')
except ExtractionError:
pass
except (InvalidFormatError, sqlite3.OperationalError):
flask.abort(404, 'Cannot read tile database')
return flask.send_file(blank_tile(), mimetype='image/png')
def vector_tiles(map_path, z, y, x):
try:
mbtiles = os.path.join(root_paths['flatmaps'], map_path,
'index.mbtiles')
reader = MBTilesReader(mbtiles)
return flask.send_file(io.BytesIO(reader.tile(z, x, y)),
mimetype='application/octet-stream')
except ExtractionError:
pass
except (InvalidFormatError, sqlite3.OperationalError):
flask.abort(404, 'Cannot read tile database')
return flask.make_response('', 204)
def vector_tiles(map_path, layer, z, y, x):
try:
mbtiles = os.path.join(maps_root, map_path, 'index.mbtiles')
reader = MBTilesReader(mbtiles)
tile = reader.tile(z, x, y)
headers = {'Content-Type': 'application/x-protobuf'}
if tile[0:2] == b'\x1f\x8b':
headers['Content-Encoding'] = 'gzip'
return response.raw(tile, headers=headers)
except ExtractionError:
pass
except (InvalidFormatError, sqlite3.OperationalError):
exceptions.abort(404, 'Cannot read tile database')
return response.empty(status=204)
def vector_tiles(map_id, z, y, x):
try:
mbtiles = os.path.join(settings['FLATMAP_ROOT'], map_id,
'index.mbtiles')
tile_reader = MBTilesReader(mbtiles)
tile_bytes = tile_reader.tile(z, x, y)
if metadata(tile_reader, 'compressed'):
tile_bytes = gzip.decompress(tile_bytes)
return send_bytes(io.BytesIO(tile_bytes), 'application/octet-stream')
except ExtractionError:
pass
except (InvalidFormatError, sqlite3.OperationalError):
flask.abort(404, 'Cannot read tile database')
return flask.make_response('', 204)
def __init__(self, name):
"""
Load a MBTile file.
If `name` is a valid filepath, it will load it.
Else, it will attempt to load it within `settings.MBTILES_ROOT` folder.
"""
mbtiles_file = name
if not os.path.exists(mbtiles_file):
if not os.path.exists(app_settings.MBTILES_ROOT):
raise MBTilesFolderError()
mbtiles_file = os.path.join(app_settings.MBTILES_ROOT, name)
if not os.path.exists(mbtiles_file):
mbtiles_file = "%s.%s" % (mbtiles_file, app_settings.MBTILES_EXT)
if not os.path.exists(mbtiles_file):
raise MBTilesNotFoundError(_("'%s' not found") % mbtiles_file)
self.fullpath = mbtiles_file
self.basename = os.path.basename(self.fullpath)
self._reader = MBTilesReader(self.fullpath, tilesize=app_settings.TILE_SIZE)
def maps():
"""
Get a list of available flatmaps.
:>jsonarr string id: the flatmap's unique identifier on the server
:>jsonarr string source: the map's source URL
:>jsonarr string created: when the map was generated
:>jsonarr string describes: the map's description
"""
flatmap_list = []
root_path = pathlib.Path(settings['FLATMAP_ROOT'])
if root_path.is_dir():
for tile_dir in root_path.iterdir():
mbtiles = os.path.join(settings['FLATMAP_ROOT'], tile_dir,
'index.mbtiles')
if os.path.isdir(tile_dir) and os.path.exists(mbtiles):
reader = MBTilesReader(mbtiles)
try:
source_row = reader._query(
"SELECT value FROM metadata WHERE name='source';"
).fetchone()
except (InvalidFormatError, sqlite3.OperationalError):
flask.abort(
404, 'Cannot read tile database: {}'.format(mbtiles))
if source_row is not None:
flatmap = {'id': tile_dir.name, 'source': source_row[0]}
created = reader._query(
"SELECT value FROM metadata WHERE name='created';"
).fetchone()
if created is not None:
flatmap['created'] = created[0]
describes = reader._query(
"SELECT value FROM metadata WHERE name='describes';"
).fetchone()
if describes is not None and describes[0]:
flatmap['describes'] = normalise_identifier(
describes[0])
flatmap_list.append(flatmap)
return flask.jsonify(flatmap_list)
def load_mbtiles(self, mbtiles):
"""
Loads all the downloaded *.mbtiles, but centers on the requested one.
"""
mbt_merge_manager = MbtMergeManager()
not_merged_mbtiles = mbt_merge_manager.not_merged()
main_mbtiles_path = App.get_running_app().main_mbtiles_path
# not yet merged *.mbtiles plus main one
mbtiles_paths = not_merged_mbtiles + [main_mbtiles_path]
# requested mbtiles path
mbtiles_path = os.path.join(App.get_running_app().mbtiles_directory,
mbtiles)
map_source = MBTilesCompositeMapSource(mbtiles_paths)
self.map_source = map_source
mbreader = MBTilesReader(mbtiles_path)
# centers on requested loaded mbtiles
metadata = mbreader.metadata()
if "center" in metadata:
center = metadata["center"]
longitude, latitude, default_zoom = map(float, center.split(","))
# defaults to the minimum available zoom
zoom = int(default_zoom)
self.animated_center_on(latitude, longitude, zoom)
def __init__(self, db_file):
self._db = MBTilesReader(db_file)
def get_metadata(map_id, name):
mbtiles = os.path.join(settings['FLATMAP_ROOT'], map_id, 'index.mbtiles')
return metadata(MBTilesReader(mbtiles), name)
def __init__(self, name, catalog=None):
self.catalog = catalog
self.fullpath = self.objects.fullpath(name, catalog)
self.basename = os.path.basename(self.fullpath)
self._reader = MBTilesReader(self.fullpath, tilesize=app_settings.TILE_SIZE)
