steady-api
Version:
Configurable REST API built with Express and TypeScript
60 lines • 2.22 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const DefaultRouteHandler_1 = require("./DefaultRouteHandler");
const ErrorResponse_1 = require("./ErrorResponse");
class StreamingRouteHandler extends DefaultRouteHandler_1.DefaultRouteHandler {
constructor(values, action, req, res) {
super(values, action, req, res);
}
handle() {
this.action(this.values, (err, emitter, dataMapFunction) => {
if (err) {
const response = new ErrorResponse_1.ErrorResponse({
req: this.req,
res: this.res,
errorMessage: err.errorMessage,
errors: err.errors,
status: err.status
});
return response.send();
}
// write the headers
this.res.writeHead(200, {
'Content-Type': 'text/event-stream',
'Cache-Control': 'no-cache',
'Connection': 'keep-alive'
});
this.req.on('close', () => {
emitter.kill('SIGHUP');
});
emitter.stdout.on("data", data => {
data = data.toString();
if (typeof dataMapFunction === 'function') {
data = dataMapFunction(data);
}
const output = {
type: "data",
data: data
};
this.res.write(JSON.stringify(output) + "\n");
});
emitter.stderr.on("data", err => {
err = err.toString();
if (typeof dataMapFunction === 'function') {
err = dataMapFunction(err);
}
const output = {
type: "error",
data: err
};
this.res.write(JSON.stringify(output) + "\n");
});
emitter.on("close", data => {
emitter.removeAllListeners();
this.res.end();
});
});
}
}
exports.StreamingRouteHandler = StreamingRouteHandler;
//# sourceMappingURL=StreamingRouteHandler.js.map