134 lines
3.9 KiB
JavaScript
134 lines
3.9 KiB
JavaScript
"use strict";
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const debugFactory = require('debug');
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import {
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Decoder, Encoder, Bytes,
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Observe, Skeleton,
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genUuid, currentFacet,
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} from "@syndicate-lang/core";
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const WS = activate require("@syndicate-lang/driver-websocket");
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const {
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Connect, Peer,
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Commit,
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Assert, Clear, Message,
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Add, Del, Msg, Err,
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Ping, Pong,
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makeDecoder,
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} = activate require("./protocol");
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const P = activate require("./internal_protocol");
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const Turn = activate require("./turn");
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assertion type WSServer(url, scope) = Symbol.for('server-websocket-connection');
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assertion type Loopback(scope) = Symbol.for('server-loopback-connection');
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assertion type ToServer(addr, assertion);
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assertion type FromServer(addr, assertion);
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assertion type ServerConnection(addr);
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assertion type ServerConnected(addr);
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message type ForceServerDisconnect(addr);
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message type _ServerPacket(addr, packet);
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Object.assign(module.exports, {
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WSServer, Loopback,
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ToServer, FromServer,
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ServerConnection, ServerConnected,
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ForceServerDisconnect,
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});
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export function _genericClientSessionFacet(addr, scope, w0, debug) {
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if (debug === void 0) {
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debug = debugFactory('syndicate/server:client:' + genUuid('?'));
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}
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assert ServerConnected(addr);
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on start debug('+', addr.toString(), scope);
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on stop debug('-', addr.toString(), scope);
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on message _ServerPacket(addr, $m) debug('<', m.toString());
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const w = (x) => {
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debug('>', x.toString());
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w0(x);
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};
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const outboundTurn = Turn.recorder(this, 'commitNeeded', {
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extend: w,
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commit: () => { w(Commit()); },
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debug: debug
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});
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const inboundTurn = Turn.replayer({ debug: debug });
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on start w(Connect(scope));
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during ToServer(addr, $a) {
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const ep = genUuid('pub');
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on start outboundTurn.extend(Assert(ep, a));
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on stop outboundTurn.extend(Clear(ep));
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}
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on message ToServer(addr, $a) outboundTurn.extend(Message(a));
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on message _ServerPacket(addr, Ping()) w(Pong());
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during Observe(FromServer(addr, $spec)) {
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const ep = genUuid('sub');
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on start outboundTurn.extend(Assert(ep, Observe(spec)));
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on stop outboundTurn.extend(Clear(ep));
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on message _ServerPacket(addr, Add(ep, $vs)) inboundTurn.extend(() => {
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react {
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const assertionFacet = currentFacet();
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assert Skeleton.instantiateAssertion(FromServer(addr, spec), vs);
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on message _ServerPacket(addr, Del(ep, vs)) inboundTurn.extend(() => {
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assertionFacet.stop();
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});
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}
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})
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on message _ServerPacket(addr, Msg(ep, $vs)) inboundTurn.extend(() => {
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send Skeleton.instantiateAssertion(FromServer(addr, spec), vs);
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})
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on message _ServerPacket(addr, Commit()) inboundTurn.commit();
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}
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}
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spawn named "ServerClientFactory" {
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during ToServer($addr, _) assert ServerConnection(addr);
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during Observe(FromServer($addr, _)) assert ServerConnection(addr);
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during Observe(ServerConnected($addr)) assert ServerConnection(addr);
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during ServerConnection($addr(WSServer($url, $scope))) spawn named ['ServerClient', addr] {
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const wsId = genUuid('ws');
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const debug = debugFactory('syndicate/server:client:' + wsId);
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during WS.WebSocket(wsId, url, {}) {
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on message WS.DataIn(wsId, $data) {
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if (data instanceof Bytes) send _ServerPacket(addr, makeDecoder(data).next());
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}
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_genericClientSessionFacet.call(
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this,
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addr, scope,
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(x) => { send WS.DataOut(wsId, new Encoder().push(x).contents()); },
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debug);
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}
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}
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during ServerConnection($addr(Loopback($scope))) spawn named ['ServerClient', addr] {
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const debug = debugFactory('syndicate/server:client:loopback:' + scope);
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assert P.POA(addr);
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on message P.ToPOA(addr, $p) send _ServerPacket(addr, p);
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on start react {
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stop on asserted Observe(P.FromPOA(addr, _)) {
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react _genericClientSessionFacet.call(
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this,
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addr, scope,
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(x) => { send P.FromPOA(addr, x); },
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debug);
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}
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}
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}
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}
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