graphql-request
Version:
Minimal GraphQL client supporting Node and browsers for scripts or simple apps
274 lines • 12.6 kB
JavaScript
;
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};
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
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var __generator = (this && this.__generator) || function (thisArg, body) {
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Object.defineProperty(exports, "__esModule", { value: true });
exports.GraphQLWebSocketClient = void 0;
var types_1 = require("./types");
var _1 = require(".");
var CONNECTION_INIT = 'connection_init';
var CONNECTION_ACK = 'connection_ack';
var PING = 'ping';
var PONG = 'pong';
var SUBSCRIBE = 'subscribe';
var NEXT = 'next';
var ERROR = 'error';
var COMPLETE = 'complete';
var GraphQLWebSocketMessage = /** @class */ (function () {
function GraphQLWebSocketMessage(type, payload, id) {
this._type = type;
this._payload = payload;
this._id = id;
}
Object.defineProperty(GraphQLWebSocketMessage.prototype, "type", {
get: function () { return this._type; },
enumerable: false,
configurable: true
});
Object.defineProperty(GraphQLWebSocketMessage.prototype, "id", {
get: function () { return this._id; },
enumerable: false,
configurable: true
});
Object.defineProperty(GraphQLWebSocketMessage.prototype, "payload", {
get: function () { return this._payload; },
enumerable: false,
configurable: true
});
Object.defineProperty(GraphQLWebSocketMessage.prototype, "text", {
get: function () {
var result = { type: this.type };
if (this.id != null && this.id != undefined)
result.id = this.id;
if (this.payload != null && this.payload != undefined)
result.payload = this.payload;
return JSON.stringify(result);
},
enumerable: false,
configurable: true
});
GraphQLWebSocketMessage.parse = function (data, f) {
var _a = JSON.parse(data), type = _a.type, payload = _a.payload, id = _a.id;
return new GraphQLWebSocketMessage(type, f(payload), id);
};
return GraphQLWebSocketMessage;
}());
var GraphQLWebSocketClient = /** @class */ (function () {
function GraphQLWebSocketClient(socket, _a) {
var _this = this;
var onInit = _a.onInit, onAcknowledged = _a.onAcknowledged, onPing = _a.onPing, onPong = _a.onPong;
this.socketState = { acknowledged: false, lastRequestId: 0, subscriptions: {} };
this.socket = socket;
socket.onopen = function (e) { return __awaiter(_this, void 0, void 0, function () {
var _a, _b, _c, _d;
return __generator(this, function (_e) {
switch (_e.label) {
case 0:
this.socketState.acknowledged = false;
this.socketState.subscriptions = {};
_b = (_a = socket).send;
_c = ConnectionInit;
if (!onInit) return [3 /*break*/, 2];
return [4 /*yield*/, onInit()];
case 1:
_d = _e.sent();
return [3 /*break*/, 3];
case 2:
_d = null;
_e.label = 3;
case 3:
_b.apply(_a, [_c.apply(void 0, [_d]).text]);
return [2 /*return*/];
}
});
}); };
socket.onclose = function (e) {
_this.socketState.acknowledged = false;
_this.socketState.subscriptions = {};
};
socket.onerror = function (e) {
console.error(e);
};
socket.onmessage = function (e) {
try {
var message = parseMessage(e.data);
switch (message.type) {
case CONNECTION_ACK: {
if (_this.socketState.acknowledged) {
console.warn("Duplicate CONNECTION_ACK message ignored");
}
else {
_this.socketState.acknowledged = true;
if (onAcknowledged)
onAcknowledged(message.payload);
}
return;
}
case PING: {
if (onPing)
onPing(message.payload).then(function (r) { return socket.send(Pong(r).text); });
else
socket.send(Pong(null).text);
return;
}
case PONG: {
if (onPong)
onPong(message.payload);
return;
}
}
if (!_this.socketState.acknowledged) {
// Web-socket connection not acknowledged
return;
}
if (message.id === undefined || message.id === null || !_this.socketState.subscriptions[message.id]) {
// No subscription identifer or subscription indentifier is not found
return;
}
var _a = _this.socketState.subscriptions[message.id], query = _a.query, variables = _a.variables, subscriber = _a.subscriber;
switch (message.type) {
case NEXT: {
if (!message.payload.errors && message.payload.data) {
subscriber.next && subscriber.next(message.payload.data);
}
if (message.payload.errors) {
subscriber.error && subscriber.error(new types_1.ClientError(__assign(__assign({}, message.payload), { status: 200 }), { query: query, variables: variables }));
}
else {
}
return;
}
case ERROR: {
subscriber.error && subscriber.error(new types_1.ClientError({ errors: message.payload, status: 200 }, { query: query, variables: variables }));
return;
}
case COMPLETE: {
subscriber.complete && subscriber.complete();
delete _this.socketState.subscriptions[message.id];
return;
}
}
}
catch (e) {
// Unexpected errors while handling graphql-ws message
console.error(e);
socket.close(1006);
}
socket.close(4400, "Unknown graphql-ws message.");
};
}
GraphQLWebSocketClient.prototype.makeSubscribe = function (query, operationName, variables, subscriber) {
var _this = this;
var subscriptionId = (this.socketState.lastRequestId++).toString();
this.socketState.subscriptions[subscriptionId] = { query: query, variables: variables, subscriber: subscriber };
this.socket.send(Subscribe(subscriptionId, { query: query, operationName: operationName, variables: variables }).text);
return function () {
_this.socket.send(Complete(subscriptionId).text);
delete _this.socketState.subscriptions[subscriptionId];
};
};
GraphQLWebSocketClient.prototype.rawRequest = function (query, variables) {
var _this = this;
return new Promise(function (resolve, reject) {
var result;
_this.rawSubscribe(query, {
next: function (data, extensions) { return (result = { data: data, extensions: extensions }); },
error: reject,
complete: function () { return resolve(result); },
}, variables);
});
};
GraphQLWebSocketClient.prototype.request = function (document, variables) {
var _this = this;
return new Promise(function (resolve, reject) {
var result;
_this.subscribe(document, {
next: function (data) { return (result = data); },
error: reject,
complete: function () { return resolve(result); },
}, variables);
});
};
GraphQLWebSocketClient.prototype.subscribe = function (document, subscriber, variables) {
var _a = _1.resolveRequestDocument(document), query = _a.query, operationName = _a.operationName;
return this.makeSubscribe(query, operationName, variables, subscriber);
};
GraphQLWebSocketClient.prototype.rawSubscribe = function (query, subscriber, variables) {
return this.makeSubscribe(query, undefined, variables, subscriber);
};
GraphQLWebSocketClient.prototype.ping = function (payload) {
this.socket.send(Ping(payload).text);
};
GraphQLWebSocketClient.prototype.close = function () {
this.socket.close(1000);
};
GraphQLWebSocketClient.PROTOCOL = "graphql-transport-ws";
return GraphQLWebSocketClient;
}());
exports.GraphQLWebSocketClient = GraphQLWebSocketClient;
// Helper functions
function parseMessage(data, f) {
if (f === void 0) { f = function (a) { return a; }; }
var m = GraphQLWebSocketMessage.parse(data, f);
return m;
}
function ConnectionInit(payload) {
return new GraphQLWebSocketMessage(CONNECTION_INIT, payload);
}
function Ping(payload) {
return new GraphQLWebSocketMessage(PING, payload, undefined);
}
function Pong(payload) {
return new GraphQLWebSocketMessage(PONG, payload, undefined);
}
function Subscribe(id, payload) {
return new GraphQLWebSocketMessage(SUBSCRIBE, payload, id);
}
function Complete(id) {
return new GraphQLWebSocketMessage(COMPLETE, undefined, id);
}
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