ms sql analyse - table list

api/src/controllers/databaseConnections.js

@@ -0,0 +1,47 @@
+const fp = require('lodash/fp');
+const connections = require('./connections');
+const socket = require('../utility/socket');
+const { fork } = require('child_process');
+const DatabaseAnalyser = require('../engines/default/DatabaseAnalyser')
+
+module.exports = {
+  /** @type {import('../types').OpenedDatabaseConnection[]} */
+  opened: [],
+
+  handle_structure(id, database, { structure }) {
+    const existing = this.opened.find(x => x.id == id && x.database == database);
+    if (!existing) return;
+    existing.structure = structure;
+    socket.emit(`database-structure-changed-${id}-${database}`);
+  },
+  handle_error(id, { error }) {
+    console.log(error);
+  },
+
+  async ensureOpened(id, database) {
+    const existing = this.opened.find(x => x.id == id && x.database == database);
+    if (existing) return existing;
+    const connection = await connections.get({ id });
+    const subprocess = fork(`${__dirname}/../proc/databaseConnectionProcess.js`);
+    const newOpened = {
+      id,
+      database,
+      subprocess,
+      structure: DatabaseAnalyser.createEmptyStructure(),
+      connection,
+    };
+    this.opened.push(newOpened);
+    // @ts-ignore
+    subprocess.on('message', ({ msgtype, ...message }) => {
+      this[`handle_${msgtype}`](id, database, message);
+    });
+    subprocess.send({ msgtype: 'connect', ...connection });
+    return newOpened;
+  },
+
+  listTables_meta: 'get',
+  async listTables({ id, database }) {
+    const opened = await this.ensureOpened(id, database);
+    return opened.structure.tables; // .map(fp.pick(['tableName', 'schemaName']));
+  },
+};