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bimserverapiwebsocket.js
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143 lines (133 loc) · 4.11 KB
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export class BimServerApiWebSocket {
constructor(baseUrl, bimServerApi) {
this.connected = false;
this.openCallbacks = [];
this.endPointId = null;
this.listener = null;
this.tosend = [];
this.tosendAfterConnect = [];
this.messagesReceived = 0;
this.intervalId = null;
this.baseUrl = baseUrl;
this.bimServerApi = bimServerApi;
}
connect(callback = null) {
if (this.connected) {
if (callback != null) {
callback();
}
return Promise.resolve();
}
console.info("Connecting websocket");
var promise = new Promise((resolve, reject) => {
this.openCallbacks.push(() => {
resolve();
});
if (callback != null) {
if (typeof callback === "function") {
this.openCallbacks.push(callback);
} else {
console.error("Callback was not a function", callback);
}
}
const location = this.bimServerApi.baseUrl.toString().replace('http://', 'ws://').replace('https://', 'wss://') + "/stream";
try {
this._ws = new WebSocket(location);
this._ws.binaryType = "arraybuffer";
this._ws.onopen = this._onopen.bind(this);
this._ws.onmessage = this._onmessage.bind(this);
this._ws.onclose = this._onclose.bind(this);
this._ws.onerror = this._onerror.bind(this);
} catch (err) {
console.error(err);
this.bimServerApi.notifier.setError("WebSocket error" + (err.message !== undefined ? (": " + err.message) : ""));
}
});
return promise;
}
_onerror(err) {
console.log(err);
this.bimServerApi.notifier.setError("WebSocket error" + (err.message !== undefined ? (": " + err.message) : ""));
}
_onopen() {
this.intervalId = setInterval(() => {
this.send({"hb": true});
}, 30 * 1000); // Send hb every 30 seconds
while (this.tosendAfterConnect.length > 0 && this._ws.readyState == 1) {
const messageArray = this.tosendAfterConnect.splice(0, 1);
this._sendWithoutEndPoint(messageArray[0]);
}
}
_sendWithoutEndPoint(message) {
if (this._ws && this._ws.readyState == 1) {
this._ws.send(message);
} else {
this.tosendAfterConnect.push(message);
}
}
_send(message) {
if (this._ws && this._ws.readyState == 1 && this.endPointId != null) {
this._ws.send(message);
} else {
console.log("Waiting", message);
this.tosend.push(message);
}
}
send(object) {
const str = JSON.stringify(object);
this.bimServerApi.log("Sending", str);
this._send(str);
}
_onmessage(message) {
this.messagesReceived++;
if (this.messagesReceived % 10 === 0) {
// console.log(this.messagesReceived);
}
if (message.data instanceof ArrayBuffer) {
this.listener(message.data);
} else {
const incomingMessage = JSON.parse(message.data);
if (incomingMessage.id != null) {
var id = incomingMessage.id;
if (this.bimServerApi.websocketCalls.has(id)) {
var fn = this.bimServerApi.websocketCalls.get(id);
fn(incomingMessage);
this.bimServerApi.websocketCalls.delete(id);
}
} else {
this.bimServerApi.log("incoming", incomingMessage);
if (incomingMessage.welcome !== undefined) {
this._sendWithoutEndPoint(JSON.stringify({"token": this.bimServerApi.token}));
} else if (incomingMessage.endpointid !== undefined) {
this.endPointId = incomingMessage.endpointid;
this.connected = true;
this.openCallbacks.forEach((callback) => {
callback();
});
while (this.tosend.length > 0 && this._ws.readyState == 1) {
const messageArray = this.tosend.splice(0, 1);
console.log(messageArray[0]);
this._send(messageArray[0]);
}
this.openCallbacks = [];
} else {
if (incomingMessage.request !== undefined) {
this.listener(incomingMessage.request);
} else if (incomingMessage.requests !== undefined) {
incomingMessage.requests.forEach((request) => {
this.listener(request);
});
}
}
}
}
}
_onclose(m) {
console.log("WebSocket closed", m);
clearInterval(this.intervalId);
this._ws = null;
this.connected = false;
this.openCallbacks = [];
this.endpointid = null;
}
}