ssh tunnel - reuse SSH connection + local port for multiple DB connections

packages/api/src/utility/sshTunnelProxy.js

@@ -0,0 +1,30 @@
+const uuidv1 = require('uuid/v1');
+const { getSshTunnel } = require('./sshTunnel');
+
+const dispatchedMessages = {};
+
+async function handleGetSshTunnelRequest({ msgid, connection }, subprocess) {
+  const response = await getSshTunnel(connection);
+  subprocess.send({ msgtype: 'getsshtunnel-response', msgid, response });
+}
+
+function handleGetSshTunnelResponse({ msgid, response }, subprocess) {
+  const { resolve } = dispatchedMessages[msgid];
+  delete dispatchedMessages[msgid];
+  resolve(response);
+}
+
+async function getSshTunnelProxy(connection) {
+  if (!process.send) return getSshTunnel(connection);
+  const msgid = uuidv1();
+  process.send({ msgtype: 'getsshtunnel-request', msgid, connection });
+  return new Promise((resolve, reject) => {
+    dispatchedMessages[msgid] = { resolve, reject };
+  });
+}
+
+module.exports = {
+  handleGetSshTunnelRequest,
+  handleGetSshTunnelResponse,
+  getSshTunnelProxy,
+};