def clear_extent(self, extent, map_extent):
tile_coord = tiletree.extent_to_tile_coord(extent, map_extent)
curs = self.conn.cursor()
curs.execute(\
"""
DELETE FROM %(node_table)s node
WHERE node.zoom_level >= %%(z)s AND floor(node.tile_x / (2^(node.zoom_level - %%(z)s)))::int = %%(x)s AND
floor(node.tile_y / (2^(node.zoom_level - %%(z)s)))::int = %%(y)s
""" % {'node_table':self.node_table,},
{'z':tile_coord[0], 'x':tile_coord[1], 'y':tile_coord[2]})
def create_machine_jobs(global_config):
dist_render_config = global_config['dist_render']
#override parameteres with render_extent if necessary
render_extent = global_config['map_extent']
if ('render_extent' in dist_render_config):
render_extent = dist_render_config['render_extent']
tile_coords = tiletree.extent_to_tile_coord(
render_extent, global_config['map_extent'])
print 'Root Tile Coordinate:', tile_coords
dist_render_config['start_zoom'] = tile_coords[0]
dist_render_config['start_tile_x'] = tile_coords[1]
dist_render_config['start_tile_y'] = tile_coords[2]
#get the extent of the root node
render_extent = tiletree.tile_coord_to_bbox(
tile_coords[0], tile_coords[1], tile_coords[2],
global_config['map_extent'])
total_num_threads = sum(x['num_threads']
for x in dist_render_config['render_nodes'])
min_num_jobs = dist_render_config.get('min_num_jobs', 1)
if (total_num_threads > min_num_jobs):
min_num_jobs = total_num_threads
map_extent = global_config['map_extent']
jobs = split_bbox(min_num_jobs, dist_render_config['start_zoom'],
dist_render_config['start_tile_x'],
dist_render_config['start_tile_y'],
dist_render_config['stop_zoom'], *render_extent)
fill_to_zoom_level = jobs[0].zoom_level - 1
jobs_per_thread = int(math.ceil(len(jobs) / float(total_num_threads)))
render_node_configs = {}
for render_node in dist_render_config['render_nodes']:
this_num_jobs = min(jobs_per_thread * render_node['num_threads'],
len(jobs))
#inherit the stuff from the global config
this_config = copy.copy(global_config)
this_config.update({
'address': render_node['address'],
'num_threads': render_node['num_threads'],
'jobs': []
})
for job in jobs[0:this_num_jobs]:
this_config['jobs'].append({
'extent': [job.min_x, job.min_y, job.max_x, job.max_y],
'start_zoom':
job.zoom_level,
'stop_zoom':
dist_render_config['stop_zoom'],
'tile_x':
job.tile_x,
'tile_y':
job.tile_y,
})
del jobs[0:this_num_jobs]
render_node_configs[render_node['address']] = this_config
#add in any left over bits at the top of the tree
if (fill_to_zoom_level >= dist_render_config['start_zoom']):
render_node_configs.values()[0]['jobs'].append({
'extent':
render_extent,
'start_zoom':
dist_render_config['start_zoom'],
'stop_zoom':
fill_to_zoom_level,
'tile_x':
dist_render_config['start_tile_x'],
'tile_y':
dist_render_config['start_tile_y'],
})
#print json.dumps(render_node_configs)
return render_node_configs
def create_machine_jobs(global_config):
dist_render_config = global_config['dist_render']
#override parameteres with render_extent if necessary
render_extent = global_config['map_extent']
if('render_extent' in dist_render_config):
render_extent = dist_render_config['render_extent']
tile_coords = tiletree.extent_to_tile_coord(render_extent, global_config['map_extent'])
print 'Root Tile Coordinate:', tile_coords
dist_render_config['start_zoom'] = tile_coords[0]
dist_render_config['start_tile_x'] = tile_coords[1]
dist_render_config['start_tile_y'] = tile_coords[2]
#get the extent of the root node
render_extent = tiletree.tile_coord_to_bbox(tile_coords[0], tile_coords[1], tile_coords[2],
global_config['map_extent'])
total_num_threads = sum(x['num_threads'] for x in dist_render_config['render_nodes'])
min_num_jobs = dist_render_config.get('min_num_jobs', 1)
if(total_num_threads > min_num_jobs):
min_num_jobs = total_num_threads
map_extent = global_config['map_extent']
jobs = split_bbox(min_num_jobs, dist_render_config['start_zoom'],
dist_render_config['start_tile_x'], dist_render_config['start_tile_y'],
dist_render_config['stop_zoom'], *render_extent)
fill_to_zoom_level = jobs[0].zoom_level - 1
jobs_per_thread = int(math.ceil(len(jobs) / float(total_num_threads)))
render_node_configs = {}
for render_node in dist_render_config['render_nodes']:
this_num_jobs = min(jobs_per_thread * render_node['num_threads'], len(jobs))
#inherit the stuff from the global config
this_config = copy.copy(global_config)
this_config.update({
'address': render_node['address'],
'num_threads': render_node['num_threads'],
'jobs': []
})
for job in jobs[0:this_num_jobs]:
this_config['jobs'].append({
'extent': [job.min_x, job.min_y, job.max_x, job.max_y],
'start_zoom': job.zoom_level,
'stop_zoom': dist_render_config['stop_zoom'],
'tile_x':job.tile_x,
'tile_y':job.tile_y,
})
del jobs[0:this_num_jobs]
render_node_configs[render_node['address']] = this_config
#add in any left over bits at the top of the tree
if(fill_to_zoom_level >= dist_render_config['start_zoom']):
render_node_configs.values()[0]['jobs'].append({
'extent': render_extent,
'start_zoom': dist_render_config['start_zoom'],
'stop_zoom': fill_to_zoom_level,
'tile_x': dist_render_config['start_tile_x'],
'tile_y': dist_render_config['start_tile_y'],
})
#print json.dumps(render_node_configs)
return render_node_configs