%% -*- erlang -*-

%% Copyright (C) 2014, Jaguar Land Rover
%%
%% This program is licensed under the terms and conditions of the
%% Mozilla Public License, version 2.0.  The full text of the
%% Mozilla Public License is at https://www.mozilla.org/MPL/2.0/
%%
%% Configuration file for the (in-vehicle) IVI used by the hvac_demo
%%
%% See ../CONFIGURE.md for a details on the configuration process
%% itself.
%%

%% Parameters for simpler modification
Env = fun(V, Def) ->
	      case os:getenv(V) of
		  false -> Def;
		  Str when is_integer(Def) -> list_to_integer(Str);
		  Str when is_atom(Def) -> list_to_atom(Str);
		  Str -> Str
	      end
      end.
IPPort = fun(IP, Port) ->
		 IP ++ ":" ++ integer_to_list(Port)
	 end.
MyPort = Env("RVI_PORT", 9000).
MyIP = Env("RVI_MYIP", "127.0.0.1").
MyNodeAddr = Env("RVI_MY_NODE_ADDR", IPPort(MyIP, MyPort)).
BackendIP = Env("RVI_BACKEND", "38.129.64.31").
BackendPort = Env("RVI_BACKEND_PORT", 8807).
LogLevel = Env("RVI_LOGLEVEL", notice).

[
 %% All erlang apps needed to fire up a node. Do not touch.
 {include_lib, "rvi_core/priv/config/rvi_common.config"},

 %%
 %% Custom environment settings
 %% for all apps running on the node.
 %%
 {env,
  [

   %% All RVI configuration is done here.
   %%
   %% Please note that the rvi_node.sh launch script
   %% can still override the port range and static nodes
   %% through its command line parameters.
   %%
   %% Value substitution:
   %% All string values under the rvi tuple tree are scanned
   %% for specific dokens during startup. If a token is
   %% found, it will be replaced with a value referenced by it.
   %% Tokens can one of the following:
   %%
   %% $rvi_file(FileName,Default) - File content
   %%   When an $rvi_file() token is encountered, the first line of
   %%   the referenced file is read. The line (without the newline)
   %%   replaces the token.
   %%
   %%   Example:
   %%     { node_service_prefix, "jlr.com/vin/$rvi_file(/etc/vin,default_vin)"},
   %%
   %%     will be substituted with the first line from the file
   %%     /etc/vin:
   %%
   %%     { node_service_prefix, "jlr.com/vin/2GKEG25HXP4093669"},
   %%
   %%     If /etc/vin cannot be opened, the value default_vin
   %%     will be used instead.
   %%
   %%
   %% $rvi_env(EnvironemtnName,Default) - Environment variable
   %%   When an $rvi_env() token is encountered, the value of
   %%   the Linux process environment variable (such as $HOME) is read
   %%   to replace the token.
   %%
   %%   Example:
   %%     { node_service_prefix, "jlr.com/vin/$rvi_env(VIN,default_vin)"},
   %%
   %%     will be substituted with the value of the $VIN environment
   %%     variable:
   %%
   %%     { node_service_prefix, "jlr.com/vin/2GKEG25HXP4093669"},
   %%
   %%     If VIN is not a defined environment variable, the value
   %%     default_vin will be used instead.
   %%
   %%
   %% $rvi_uuid(Default) - Unique machine identifier
   %%   When an $rvi_uuid() token is encountered, the UUID of the root
   %%   disk used by the system is read to replace the token.
   %%   The UUID of the root disk is retrieved by opening /proc/cmdline
   %%   and extracting the root=UUID=[DiskUUID] value.
   %%   This value is generated at system install time and is reasonably
   %%   world wide unique.
   %%
   %%   Example:
   %%     { node_service_prefix, "jlr.com/vin/$uuid(default_vin)"},
   %%
   %%     will be substituted with the value of the root disk UUID:
   %%
   %%     { node_service_prefix,
   %%       "jlr.com/vin/afc0a6d8-0264-4f8a-bb3e-51ff8655b51c"},
   %%
   %%     If the root UUID cannot be retrieved, the value default_vin
   %%     will be used instead.
   %%

   {rvi_core,
    [
     %% Specify the node address that data_link uses to listen to
     %% incoming traffic from other rvi nodes.
     %%
     %% This is the address that is announced to
     %% other rvi nodes during service discovery and should be
     %% forwarded through firewalls and port forwarding to to the port
     %% specified by the configuration entry rvi -> components ->
     %% data_link ->json_rpc_server (see below).
     %%
     %% If this node is sitting behind a firewall and cannot
     %% receive incomign connections on any address, its
     %% node_address should be set to "0.0.0.0:0" to inform
     %% the remote node that it should not attempt to
     %% connect back to self.
     { node_address, MyNodeAddr },

     %% Specify the prefix of all services that this rvi node is hosting.
     %%
     %% All local services regsitering with service edge will be prefixed with
     %% the string below when they are announced to remote rvi nodes
     %% that connect to this node (using the address specified
     %% by node_address above).
     %%
     %% If a locally connected service registers itself as
     %% "hvac/fan_speed", and the node_service_prefix is
     %% "jlr.com/vin/1234/", this node will announce the service
     %% "jlr.com/vin/1234/hvac/fan_speed" as being available
     %% to remotely connected rvi nodes.
     %%
     %% Two rvi nodes should never have the same node_service_prefix
     %% value unless all services add a system-wide unique name
     %% to it.
     %%
     { node_service_prefix, "genivi.org/node/$rvi_uuid(default_id)/"},


     %% Routing rules determine how to get a message targeting a specific
     %% service to its destination.
     %%
     %% Please note that if a remotely initiated (== client) data link is
     %% available and has announced that the targeted service is available,
     %% that data link will be used regardless of what it is.
     %%
     %% In other words, if you setup routing rules for how to reach out
     %% to a vehicle using SMS, and that vehicle happens to have a 3G
     %% connection up when the message is sent, the 3G connection will be used.
     %%
     %% We will add a blacklist feature in the future to optionally block
     %% such opportunistic routing in the future.
     %%
     { routing_rules,
       [
	%% Service name prefix that rules are specified for
	%% The service prefix with the longest match against the service targeted
	%% by the message will be used.
	%%
	%% Example: Targeted service = jlr.com/backend/sota/get_updates
	%%
	%% Prefix1: { "jlr.com/backend", [...]}
	%% Prefix2: { "jlr.com/backend/sota", [...]}
	%%
	%% Prefix2 will be used.
	%%
	%% This allows you, for example, to setup different servers
	%% for different types of services (SOTA, remote door unlock,
	%% HVAC etc).
	%%

	%% Make sure to have a default if you don't want your message
	%% to error out immediately. With a default the message will
	%% be queued until it times out, waiting for a remote node
	%% to connect and announce that it can handle the targeted service.
	{ "",
	  [
	   { proto_json_rpc, dlink_tcp_rpc}
	  ]
	},

	{ "jlr.com/backend/",
	  %% Which protocol and data link pair to use when transmitting the message
	  %% to the targeted service. If a pair reports a failure, the next pair is tried.
	  [
	   { proto_json_rpc, { dlink_tcp_rpc,
			                   %% {"38.129.64.13", 8807}
			       [ { target, IPPort(BackendIP, BackendPort) } ]}}
	  ]
	},

	%% Used to communicate with vehicles
	{ "jlr.com/vin/",
	  [
	   { proto_json_rpc, { dlink_tcp_rpc, [ broadcast, { interface, "wlan0" } ] } },
	   { proto_json_rpc, { server_3g, [ initiate_outbound ]} },

	   %% Protocols can have hinting as well.
	   %% In this case JSON-RPC should only be used if the
	   %% resulting message size can fit in an SMS (140 bytes).

	   { { proto_json_rpc, [ { max_msg_size, 140 } ] } , server_sms }
	  ]
	}
       ]
     },

     { components,
       [
	%% A note about JSON-RPC calls vs gen_server calls:
	%%
	%% All locally connected services communicate with Service Edge
	%% through JSON-RPC.
	%%
	%% Communication between the internal RVI components, however,
	%% can be either JSON-RPC or gen_server calls.
	%%
	%% JSON-RPC calls provide compatability with replacement components
	%% written in languages other than Erlang.
	%%
	%% Gen_server calls provide native erlang inter-process calls that
	%% are about 4x faster than JSON-RPC when transmitting large data volumes.
	%%
	%% If one or more of the components below are replaced with external
	%% components, use JSON-RPC by specifying IP address and port in
	%% json_rpc_address for all interfaced by the external components.
	%%
	%% If you are running an all-native erlang system, use gen_server calls
	%% by specifying gen_server for all components
	%%
	%% Please note that communication between two RVI nodes are
	%% not affected by this since dlink_tcp will use
	%% JSON-RPC to communicate ( using the address/port specified
	%% by proto_json_rpc).
	%%

	{rvi_common,
	 [
	  {rvi_log, gen_server,
	   [{json_rpc_address, MyPort+9}]
	  }
	 ]},
	%% Service_edge.
	%% The service_edge tuple is a top level configuration
	%% container for everything about service edge.
	%% In theory, we can support multiple different service edge
	%% components (written in different languages).
	%%
	%% However, until we've sorted out internal routing, we will
	%% only support the native service_edge_rpc component,
	%% accessed either as a gen_server or through JSON-RPC.
	%%
	{service_edge,
	  [
	    %% Service_edge_rpc component is used as a gen_server
	    { service_edge_rpc, gen_server,
	    [
	      %% JSON-RPC address will be translated to
	      %% an URL looking like this:
	      %% http://127.0.0.1:8801
	      %%
	      %% This URL is used both for communication with
	      %% locally connected services and for intra-component
	      %% communication in case the access method for
	      %% service_edge_rpc is specified as json_rpc.
	      { json_rpc_address, { MyIP, MyPort+1 } },  % {"127.0.0.1",8801}
	      { msgpack_rpc_address, { MyIP, MyPort + 21 } },

	      %% Websocket is used for websocket access, preferably
	      %% through the rvi.js package available for Javascript
	      %% apps in browsers and crosswalk who wants to interface
	      %% RVI.
	      { websocket, [ { port, MyPort+8}]}  % 9008
	    ]
	    }
	  ]
	},
	{ service_discovery,
	  [ { service_discovery_rpc, gen_server,
	      [
	       { json_rpc_address, { MyIP, MyPort+2 }} % {"127.0.0.1",9002}
	      ]
	    }
	  ]
	},
	{ schedule,
	  [ { schedule_rpc, gen_server,
	      [
	       { json_rpc_address, { MyIP, MyPort+3 }}  % {"127.0.0.1",9003}
	      ]
	    }
	  ]
	},
	{ authorize,
	  [ { authorize_rpc, gen_server,
	      [
		{ json_rpc_address, { MyIP, MyPort+4 } } % {"127.0.0.1",9004}
	      ]
	    }
	  ]
	},
	{ protocol,
	  [ { proto_json_rpc, gen_server,
	      [
		{ json_rpc_address, { MyIP, MyPort+5 } } % {"127.0.0.1",9005}
	      ]
	    }
	  ]
	},
	{ data_link,
	  [ { dlink_tcp_rpc, gen_server,
	      [
		{ json_rpc_address, { MyIP, MyPort+6 } },  % 9006
		%% data link TCP server specifies the port we should
		%% listen to for incoming connections
		%% from other rvi nodes.
		%% A specific NIC address can also be specified
		%% through the {ip, "192.168.0.1" } tuple.
		{ server_opts, [ { port, MyPort+7 }]},
		{ persistent_connections, [ IPPort(BackendIP, BackendPort) ]}
	      ]
	    },
	    { dlink_tls_rpc, gen_server,
	      [
	       { json_rpc_address, { MyIP, MyPort+11} },
	       { server_opts, [ {port, MyPort+10} ]}
	      ]
	    }
	  ]
	}
       ]
     }
    ]}
  ]}
].