add debugging html ui.

[apps/agl-service-data-persistence.git] / ll-database-binding / htdocs / persistence / AFB-websock.js

diff --git a/ll-database-binding/htdocs/persistence/AFB-websock.js b/ll-database-binding/htdocs/persistence/AFB-websock.js
new file mode 100644 (file)
index 0000000..08a7ffe
--- /dev/null
+++ b/ll-database-binding/htdocs/persistence/AFB-websock.js
@@ -0,0 +1,174 @@
+AFB = function(base, initialtoken){
+
+var urlws = "ws://"+window.location.host+"/"+base;
+var urlhttp = "http://"+window.location.host+"/"+base;
+
+/*********************************************/
+/****                                     ****/
+/****             AFB_context             ****/
+/****                                     ****/
+/*********************************************/
+var AFB_context;
+{
+       var UUID = undefined;
+       var TOKEN = initialtoken;
+
+       var context = function(token, uuid) {
+               this.token = token;
+               this.uuid = uuid;
+       }
+
+       context.prototype = {
+               get token() {return TOKEN;},
+               set token(tok) {if(tok) TOKEN=tok;},
+               get uuid() {return UUID;},
+               set uuid(id) {if(id) UUID=id;}
+       };
+
+       AFB_context = new context();
+}
+/*********************************************/
+/****                                     ****/
+/****             AFB_websocket           ****/
+/****                                     ****/
+/*********************************************/
+var AFB_websocket;
+{
+       var CALL = 2;
+       var RETOK = 3;
+       var RETERR = 4;
+       var EVENT = 5;
+
+       var PROTO1 = "x-afb-ws-json1";
+
+       AFB_websocket = function(onopen, onabort) {
+               var u = urlws;
+               if (AFB_context.token) {
+                       u = u + '?x-afb-token=' + AFB_context.token;
+                       if (AFB_context.uuid)
+                               u = u + '&x-afb-uuid=' + AFB_context.uuid;
+               }
+               this.ws = new WebSocket(u, [ PROTO1 ]);
+               this.pendings = {};
+               this.awaitens = {};
+               this.counter = 0;
+               this.ws.onopen = onopen.bind(this);
+               this.ws.onerror = onerror.bind(this);
+               this.ws.onclose = onclose.bind(this);
+               this.ws.onmessage = onmessage.bind(this);
+               this.onopen = onopen;
+               this.onabort = onabort;
+               this.onclose = onabort;
+       }
+
+       function onerror(event) {
+               var f = this.onabort;
+               if (f) {
+                       delete this.onopen;
+                       delete this.onabort;
+                       f && f(this);
+               }
+               this.onerror && this.onerror(this);
+       }
+
+       function onopen(event) {
+               var f = this.onopen;
+               delete this.onopen;
+               delete this.onabort;
+               f && f(this);
+       }
+
+       function onclose(event) {
+               for (var id in this.pendings) {
+                       var ferr = this.pendings[id].onerror;
+                       ferr && ferr(null, this);
+               }
+               this.pendings = {};
+               this.onclose && this.onclose();
+       }
+
+       function fire(awaitens, name, data) {
+               var a = awaitens[name];
+               if (a)
+                       a.forEach(function(handler){handler(data);});
+               var i = name.indexOf("/");
+               if (i >= 0) {
+                       a = awaitens[name.substring(0,i)];
+                       if (a)
+                               a.forEach(function(handler){handler(data);});
+               }
+               a = awaitens["*"];
+               if (a)
+                       a.forEach(function(handler){handler(data);});
+       }
+
+       function reply(pendings, id, ans, offset) {
+               if (id in pendings) {
+                       var p = pendings[id];
+                       delete pendings[id];
+                       var f = p[offset];
+                       f(ans);
+               }
+       }
+
+       function onmessage(event) {
+               var obj = JSON.parse(event.data);
+               var code = obj[0];
+               var id = obj[1];
+               var ans = obj[2];
+               AFB_context.token = obj[3];
+               switch (code) {
+               case RETOK:
+                       reply(this.pendings, id, ans, 0);
+                       break;
+               case RETERR:
+                       reply(this.pendings, id, ans, 1);
+                       break;
+               case EVENT:
+               default:
+                       fire(this.awaitens, id, ans);
+                       break;
+               }
+       }
+
+       function close() {
+               this.ws.close();
+                this.onabort();
+       }
+
+       function call(method, request) {
+               return new Promise((function(resolve, reject){
+                       var id, arr;
+                       do {
+                          id = String(this.counter = 4095 & (this.counter + 1));
+                       } while (id in this.pendings);
+                       this.pendings[id] = [ resolve, reject ];
+                       arr = [CALL, id, method, request ];
+                       if (AFB_context.token) arr.push(AFB_context.token);
+                       this.ws.send(JSON.stringify(arr));
+               }).bind(this));
+       }
+
+       function onevent(name, handler) {
+               var id = name;
+               var list = this.awaitens[id] || (this.awaitens[id] = []);
+               list.push(handler);
+       }
+
+       AFB_websocket.prototype = {
+               close: close,
+               call: call,
+               onevent: onevent
+       };
+}
+/*********************************************/
+/****                                     ****/
+/****                                     ****/
+/****                                     ****/
+/*********************************************/
+return {
+       context: AFB_context,
+       ws: AFB_websocket
+};
+};
+