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-- Gemeinschaft 5 module: call router class
-- (c) AMOOMA GmbH 2013
--
module(...,package.seeall)
Router = {}
-- create route object
function Router.new(self, arg)
arg = arg or {}
object = arg.object or {}
setmetatable(object, self);
self.__index = self;
self.class = 'router';
self.log = arg.log;
self.database = arg.database;
self.routes = arg.routes or {};
self.caller = arg.caller;
self.variables = arg.variables or {};
return object;
end
function Router.build_tables(self)
local elements = {
{ var_in = 'group', var_out = '', pattern = '^users$', replacement = '', action = 'not_match', mandatory = true },
{ var_in = 'destination_number', var_out = 'destination_number', pattern = '^1$', replacement = '+123456', action = 'not_match', mandatory = true },
{ var_in = 'caller_id_number', var_out = 'caller_id_number', pattern = '^100$', replacement = '+4930100', action = 'set_route_var', mandatory = false },
}
local elements2 = {
{ var_in = 'group', var_out = '', pattern = '^users$', replacement = '', action = 'match', mandatory = true },
{ var_in = 'destination_number', var_out = 'destination_number', pattern = '^1$', replacement = '+123456', action = 'not_match', mandatory = true },
{ var_in = 'caller_id_number', var_out = 'caller_id_number', pattern = '^100$', replacement = '+4930100', action = 'set_route_var', mandatory = false },
}
local elements3 = {
{ var_in = 'destination_number', var_out = 'destination_number', pattern = '^#31#(%d+)$', replacement = 'f-dcliron-%1', action = 'set_route_var', mandatory = false },
}
local elements4 = {
{ var_in = 'destination_number', var_out = 'destination_number', pattern = '^(%d+)$', replacement = '%1', action = 'set_route_var', mandatory = true },
{ var_in = 'caller_id_number', var_out = 'caller_id_number', pattern = '^(.+)$', replacement = '+49%1', action = 'set_route_var', mandatory = false },
}
local routes = {
prerouting = {
{ id = 10, name = 'feature codes', elements = elements3, endpoint_type = 'dialplanfunction', endpoint_id = 0 },
},
outbound = {
{ id = 1, name = 'no users', elements = elements, endpoint_type = 'gateway', endpoint_id = 1, },
{ id = 2, name = 'all users', elements = elements2, endpoint_type = 'gateway', endpoint_id = 1, },
{ id = 3, name = 'all users', elements = elements2, endpoint_type = 'gateway', endpoint_id = 1, },
},
inbound = {
{ id = 20, name = 'haeron', elements = elements4, endpoint_type = 'phonenumber', endpoint_id = 1, },
},
};
return routes;
end
function Router.failover_table(self)
return {
['603'] = true,
['480'] = true,
UNALLOCATED_NUMBER = true,
NORMAL_TEMPORARY_FAILURE = true,
}
end
function Router.expand_variables(self, line)
return (line:gsub('{([%a%d_]+)}', function(captured)
return variables[captured] or '';
end))
end
function Router.set_parameter(self, action, name, value)
if action == 'set_session_var' then
self.log:debug('ROUTER_SET_SESSION_VARIABLE - ', name, ' = ', value);
self.caller[name] = value;
elseif action == 'set_channel_var' then
self.log:debug('ROUTER_SET_VARIABLE - ', name, ' = ', value);
self.caller:set_variable(name, value);
elseif action == 'export_channel_var' then
self.log:debug('ROUTER_EXPORT_VARIABLE - ', name, ' = ', value);
self.caller:export_variable(name, value);
elseif action == 'set_header' then
self.log:debug('ROUTER_SIP_HEADER - ', name, ': ', value);
self.caller:export_variable('sip_h_' .. name, value);
else
self.log:error('ROUTER_SET_PARAMERER - unknown action: ', action, ', ', name, ' = ', value);
end
end
function Router.element_match(self, pattern, search_string, replacement)
local variables_list = {};
local success, result = pcall(string.find, search_string, pattern);
if not success then
self.log:error('ELEMENT_MATCH - table error - pattern: ', pattern, ', search_string: ', search_string);
elseif result then
return true, search_string:gsub(pattern, self:expand_variables(replacement, variables_list));
end
return false;
end
function Router.route_match(self, route)
local destination = {
gateway = 'gateway' .. route.endpoint_id,
['type'] = route.endpoint_type,
id = route.endpoint_id,
actions = {}
};
local route_matches = false;
for index=1, #route.elements do
local result = false;
local replacement = nil;
local element = route.elements[index];
if element.var_in == 'group' then
local groups = common.str.try(self.caller, 'auth_account.owner.groups');
if not groups or type(groups) ~= 'table' then
if element.mandatory then
return false;
end
end
for group_name, value in pairs(groups) do
result, replacement = self:element_match(tostring(element.pattern), tostring(group_name), tostring(element.replacement));
if result then
break;
end
end
else
local search_string = tostring(common.str.try(self.caller, element.var_in))
result, replacement = self:element_match(tostring(element.pattern), tostring(search_string), tostring(element.replacement));
end
if element.action == 'not_match' then
result = not result;
end
if not result then
if element.mandatory then
return false;
end
elseif element.action ~= 'match' and element.action ~= 'not_match' then
if element.action == 'set_route_var' then
destination[element.var_out] = replacement;
else
table.insert(destination.actions, {action = element.action, name = element.var_out, value = replacement});
end
end
if result then
route_matches = true;
end
end
if route_matches then
return destination;
end;
return nil;
end
function Router.route_run(self, table_name, phone_number, find_first)
local routing_tables = self:build_tables();
local routing_table = routing_tables[table_name];
local routes = {};
if type(routing_table) == 'table' then
for index=1, #routing_table do
local route = self:route_match(routing_table[index], phone_number);
if route then
table.insert(routes, route);
self.log:info('ROUTE ', #routes,' - ', table_name,'=', routing_table[index].id, '/', routing_table[index].name, ', destination: ', route.type, '=', route.id);
if find_first then
return route;
end
else
self.log:debug('ROUTE_NO_MATCH - ', table_name, '=', routing_table[index].id, '/', routing_table[index].name);
end
end
end
if not find_first then
return routes;
end
end
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