SYNC: commit/rollback - control commands

packages/api/src/controllers/sessions.js

@@ -56,7 +56,11 @@ module.exports = {
   handle_done(sesid, props) {
     socket.emit(`session-done-${sesid}`);
     if (!props.skipFinishedMessage) {
-      this.dispatchMessage(sesid, 'Query execution finished');
+      if (props.controlCommand) {
+        this.dispatchMessage(sesid, `${_.startCase(props.controlCommand)} finished`);
+      } else {
+        this.dispatchMessage(sesid, 'Query execution finished');
+      }
     }
     const session = this.opened.find(x => x.sesid == sesid);
     if (session.loadingReader_jslid) {
@@ -144,6 +148,20 @@ module.exports = {
     return { state: 'ok' };
   },
 
+  executeControlCommand_meta: true,
+  async executeControlCommand({ sesid, command }) {
+    const session = this.opened.find(x => x.sesid == sesid);
+    if (!session) {
+      throw new Error('Invalid session');
+    }
+
+    logger.info({ sesid, command }, 'Processing control command');
+    this.dispatchMessage(sesid, `${_.startCase(command)} started`);
+    session.subprocess.send({ msgtype: 'executeControlCommand', command });
+
+    return { state: 'ok' };
+  },
+
   executeReader_meta: true,
   async executeReader({ conid, database, sql, queryName, appFolder }) {
     const { sesid } = await this.create({ conid, database });

packages/api/src/proc/sessionProcess.js

@@ -245,6 +245,46 @@ async function handleStopProfiler({ jslid }) {
   currentProfiler = null;
 }
 
+async function handleExecuteControlCommand({ command }) {
+  lastActivity = new Date().getTime();
+
+  await waitConnected();
+  const driver = requireEngineDriver(storedConnection);
+
+  if (command == 'commitTransaction' && !allowExecuteCustomScript(driver)) {
+    process.send({
+      msgtype: 'info',
+      info: {
+        message: 'Connection without read-only sessions is read only',
+        severity: 'error',
+      },
+    });
+    process.send({ msgtype: 'done', skipFinishedMessage: true });
+    return;
+    //process.send({ msgtype: 'error', error: e.message });
+  }
+
+  executingScripts++;
+  try {
+    const dmp = driver.createDumper();
+    switch (command) {
+      case 'commitTransaction':
+        await dmp.commitTransaction();
+        break;
+      case 'rollbackTransaction':
+        await dmp.rollbackTransaction();
+        break;
+      case 'beginTransaction':
+        await dmp.beginTransaction();
+        break;
+    }
+    await driver.query(dbhan, dmp.s, { discardResult: true });
+    process.send({ msgtype: 'done', controlCommand: command });
+  } finally {
+    executingScripts--;
+  }
+}
+
 async function handleExecuteQuery({ sql }) {
   lastActivity = new Date().getTime();
 
@@ -323,6 +363,7 @@ function handlePing() {
 const messageHandlers = {
   connect: handleConnect,
   executeQuery: handleExecuteQuery,
+  executeControlCommand: handleExecuteControlCommand,
   executeReader: handleExecuteReader,
   startProfiler: handleStartProfiler,
   stopProfiler: handleStopProfiler,