def node(self, node_id, scenario_id=None):
user_id = request.identity['user'].user_id
node_i = network.get_node(node_id, **{'user_id':user_id})
attributes = []
rs_dict = {}
if scenario_id is not None:
node_data = HydraServer.lib.scenario.get_resource_data('NODE', node_id, scenario_id, None, **{'user_id':user_id})
for rs in node_data:
rs_dict[rs.resource_attr_id] = rs.dataset
for a in node_i.attributes:
attr = {}
attr['attr_id'] = a.attr_id
attr['resource_attr_id'] = a.resource_attr_id
attr['is_var'] = a.attr_is_var
attr['name'] = a.attr.attr_name
attr['value'] = rs_dict.get(a.resource_attr_id)
attributes.append(attr)
return dict(node_id=node_id, scenario_id=scenario_id, attributes=attributes)
def network(self, network_id, scenario_id):
"""This method returns a network page, with a list of networks."""
user_id = request.identity['user'].user_id
net = HydraServer.lib.network.get_network(int(network_id), scenario_ids=[int(scenario_id)], **{'user_id':user_id})
if net.projection is not None and net.projection.strip() != "":
try:
if net.projection == 'WGS84':
net_proj = 4326
else:
net_proj = net.projection.split(':')[1]
source_proj = osr.SpatialReference()
source_proj.ImportFromEPSG(int(net_proj))
target_proj = osr.SpatialReference()
target_proj.ImportFromEPSG(4326)
transform = osr.CoordinateTransformation(source_proj, target_proj)
for n in net.nodes:
x = n.node_x
y = n.node_y
source_point = ogr.CreateGeometryFromWkt("POINT (%s %s)" % (x, y))
source_point.Transform(transform)
n.node_x = source_point.GetX()
n.node_y = source_point.GetY()
except:
log.critical("Unable to recognise projection %s"%net.projection)
net.projection = None
def get_layout_property(resource, prop, default):
layout = {}
if resource.layout is not None:
layout = eval(resource.layout)
elif resource.types:
if resource.types[0].templatetype.layout is not None:
layout = eval(resource.types[0].templatetype.layout)
prop_value = default
if layout.get(prop) is not None:
prop_value = layout[prop]
return prop_value
json_net = {'nodes':[], 'edges':[]}
for node in net.nodes:
colour = get_layout_property(node, 'colour', 'red')
size = get_layout_property(node, 'size', 1)
node_dict = {
'id' : str(node.node_id),
'label': node.node_name,
'x' : float(node.node_x),
'y' : float(node.node_y),
'size' : size,
'color': colour,
}
json_net['nodes'].append(node_dict)
for link in net.links:
colour = get_layout_property(link, 'colour', 'red')
width = get_layout_property(link, 'line_weight', 5)
link_dict = {
'id' : str(link.link_id),
'source': str(link.node_1_id),
'target' : str(link.node_2_id),
'color': colour,
'size':width,
'type':'curve',
'hover_color':'#ccc',
}
json_net['edges'].append(link_dict)
node_coords = {}
node_name_map = {}
for node in net.nodes:
node_coords[node.node_id] = [node.node_y, node.node_x];
node_name_map[node.node_id] = node.node_name
link_coords = {}
for link in net.links:
link_coords[link.link_id] = [node_coords[link.node_1_id], node_coords[link.node_2_id]]
log.info(node_coords)
attributes = []
rs_dict = {}
if scenario_id is not None:
network_data = HydraServer.lib.scenario.get_resource_data('NETWORK', network_id, scenario_id, None, **{'user_id':user_id})
for rs in network_data:
rs_dict[rs.resource_attr_id] = rs.dataset
for a in net.attributes:
attr = {}
attr['attr_id'] = a.attr_id
attr['resource_attr_id'] = a.resource_attr_id
attr['is_var'] = a.attr_is_var
attr['name'] = a.attr_name
attr['value'] = rs_dict.get(a.resource_attr_id)
attributes.append(attr)
DBSession.expunge_all()
return dict(network=net,
scenario_id=scenario_id,
environment=request.environ,
attributes=attributes,
link_coords=link_coords,
node_coords=node_coords,
node_name_map=node_name_map,
json_net = json.dumps(json_net),
projection = net.projection)