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Better error handling

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LJNeon 2022-10-02 18:52:38 -07:00
parent 86c6a3ad35
commit 0657fac98d
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GPG key ID: 837C6B23D22030BE
1 changed files with 18 additions and 17 deletions
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35
src/networking/messageHandler.ts
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@ -7,38 +7,39 @@ import { fileChangeEventToMsg } from "./messageGenerators";
import type { Signal } from "signal-js";
import { Message } from "../interfaces";
function deserialize(data: RawData): Message | void {
let msg;
function deserialize(data: RawData): Message {
const msg = JSON.parse(data.toString());
try {
msg = JSON.parse(data.toString());
} catch (err) {
return console.log(err);
if (typeof msg.jsonrpc !== "string" || msg.jsonrpc !== "2.0" || typeof msg.id !== "number") {
throw Error("Malformed data received.");
}
if (typeof msg.jsonrpc !== "string" || msg.jsonrpc !== "2.0" || typeof msg.id !== "number") return;
const id: number = msg.id;
const request = messageTracker.get(id);
if (typeof request?.method !== "string") return;
else if (msg.error != null) return { jsonrpc: "2.0", error: msg.error, id };
else if (msg.result == null) return;
if (typeof request?.method !== "string") {
throw Error("Malformed JSON received.");
} else if (msg.error != null) {
throw Error(msg.error);
} else if (msg.result == null) {
throw Error("Malformed JSON received.");
}
return { jsonrpc: "2.0", method: request.method, result: msg.result, id };
}
function isStringArray(s: Array<unknown>): s is string[] {
export function isStringArray(s: Array<unknown>): s is string[] {
return s.every((s) => typeof s === "string");
}
export function messageHandler(signaller: Signal, data: RawData, paths: Map<string, Stats>) {
const incoming = deserialize(data);
let incoming;
if (incoming == null) {
return console.log("Malformed data received.");
} else if (incoming.error) {
return console.log(incoming.error);
try {
incoming = deserialize(data);
} catch (err) {
if (err instanceof Error) return console.log(err.message);
else throw err;
}
switch (incoming.method) {