61 lines
1.8 KiB
JavaScript
61 lines
1.8 KiB
JavaScript
const electron = require('electron');
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const Queue = require('p-queue');
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const sql = require('./sql');
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const { remove: removeUserConfig } = require('./user_config');
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const { remove: removeEphemeralConfig } = require('./ephemeral_config');
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const { ipcMain } = electron;
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module.exports = {
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initialize,
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};
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let initialized = false;
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const SQL_CHANNEL_KEY = 'sql-channel';
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const ERASE_SQL_KEY = 'erase-sql-key';
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const queue = new Queue({ concurrency: 1 });
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function initialize() {
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if (initialized) {
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throw new Error('sqlChannels: already initialized!');
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}
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initialized = true;
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ipcMain.on(SQL_CHANNEL_KEY, async (event, jobId, callName, ...args) => {
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try {
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const fn = sql[callName];
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if (!fn) {
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throw new Error(
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`sql channel: ${callName} is not an available function`
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);
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}
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// Note: we queue here to keep multi-query operations atomic. Without it, any
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// multistage data operation (even within a BEGIN/COMMIT) can become interleaved,
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// since all requests share one database connection.
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const result = await queue.add(() => fn(...args));
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event.sender.send(`${SQL_CHANNEL_KEY}-done`, jobId, null, result);
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} catch (error) {
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const errorForDisplay = error && error.stack ? error.stack : error;
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console.log(
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`sql channel error with call ${callName}: ${errorForDisplay}`
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);
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event.sender.send(`${SQL_CHANNEL_KEY}-done`, jobId, errorForDisplay);
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}
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});
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ipcMain.on(ERASE_SQL_KEY, async event => {
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try {
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removeUserConfig();
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removeEphemeralConfig();
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event.sender.send(`${ERASE_SQL_KEY}-done`);
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} catch (error) {
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const errorForDisplay = error && error.stack ? error.stack : error;
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console.log(`sql-erase error: ${errorForDisplay}`);
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event.sender.send(`${ERASE_SQL_KEY}-done`, error);
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}
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});
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}
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