Add code generator for public API function definitions and their plproxied counterparts

interface/generate-grant-execute.rb

@@ -23,9 +23,28 @@ class GrantExecute
   end  
 end
 
+class PublicFunctionDefinition
+  TEMPLATE_FILE = 'templates/public-function-definition.erb'
+
+  attr_reader :function_signature
+
+  def initialize(function_signature)
+    @function_signature = function_signature
+    @template = File.read(TEMPLATE_FILE)
+  end
+
+  def render
+    ERB.new(@template).result(binding)
+  end
+end
 
 
 CSV.foreach(INTERFACE_SOURCE_FILE, {headers: true}) do |function_signature|
+
+  function_definition = PublicFunctionDefinition.new(function_signature).render
+  puts function_definition
+
+
   grant = GrantExecute.new(function_signature).render
-  puts grant
+  #puts grant
 end

interface/templates/public-function-definition.erb

@@ -0,0 +1,24 @@
+--
+-- Public geocoder API function
+--
+-- These are the only ones with permissions to publicuser role
+-- and should also be the only ones with SECURITY DEFINER
+
+CREATE OR REPLACE FUNCTION <%= GEOCODER_CLIENT_SCHEMA %>.<%= function_signature['function_name'] %> (<%= function_signature['argument_data_types'] %>)
+RETURNS <%= function_signature['result_data_type'] %> AS $$
+DECLARE
+  ret <%= function_signature['result_data_type'] %>;
+BEGIN
+  -- TODO: this is to be changed according to the feature doc
+  SELECT <%= GEOCODER_CLIENT_SCHEMA %>._geocode_admin0_polygon(session_user, txid_current(), <%= function_signature['argument_data_types'] %>) INTO ret;
+  RETURN ret;
+END;
+$$ LANGUAGE 'plpgsql' SECURITY DEFINER;
+
+--------------------------------------------------------------------------------
+
+CREATE OR REPLACE FUNCTION <%= GEOCODER_CLIENT_SCHEMA %>._<%= function_signature['function_name'] %> (user_id name, tx_id bigint, <%= function_signature['argument_data_types'] %>)
+RETURNS Geometry AS $$
+  CONNECT <%= GEOCODER_CLIENT_SCHEMA %>._server_conn_str();
+  SELECT cdb_geocoder_server.<%= function_signature['function_name'] %> (user_id, tx_id, function_signature['argument_data_types']);
+$$ LANGUAGE plproxy;