6.7 Scripting AdminAPI

MySQL Shell supports running scripts in batch mode. This enables you to automate processes using AdminAPI with scripts written in JavaScript or Python, which can be run using MySQL Shell's --file option. For example:

$> mysqlsh --file setup-innodb-cluster.js

Note

Any command line options specified after the script file name are passed to the script and not to MySQL Shell. You can access those options using the os.argv array in JavaScript, or the sys.argv array in Python. In both cases, the first option picked up in the array is the script name.

The contents of an example script files are shown here, using JavaScript:

print('InnoDB Cluster sandbox set up\n');
print('==================================\n');
print('Setting up a MySQL InnoDB Cluster with 3 MySQL Server sandbox instances,\n');
print('installed in ~/mysql-sandboxes, running on ports 3310, 3320 and 3330.\n\n');

var dbPass = shell.prompt('Please enter a password for the MySQL root account: ', {type:"password"});

try {
   print('\nDeploying the sandbox instances.');
   dba.deploySandboxInstance(3310, {password: dbPass});
   print('.');
   dba.deploySandboxInstance(3320, {password: dbPass});
   print('.');
   dba.deploySandboxInstance(3330, {password: dbPass});
   print('.\nSandbox instances deployed successfully.\n\n');

   print('Setting up InnoDB Cluster...\n');
   shell.connect('root@localhost:3310', dbPass);

   var cluster = dba.createCluster("prodCluster");

   print('Adding instances to the Cluster.');
   cluster.addInstance({user: "root", host: "localhost", port: 3320, password: dbPass});
   print('.');
   cluster.addInstance({user: "root", host: "localhost", port: 3330, password: dbPass});
   print('.\nInstances successfully added to the Cluster.');

   print('\nInnoDB Cluster deployed successfully.\n');
} catch(e) {
   print('\nThe InnoDB Cluster could not be created.\n\nError: ' +
   + e.message + '\n');
}

Or using Python:

print('InnoDB Cluster sandbox set up\n');
print('==================================\n');
print('Setting up a MySQL InnoDB Cluster with 3 MySQL Server sandbox instances,\n');
print('installed in ~/mysql-sandboxes, running on ports 3310, 3320 and 3330.\n\n');

dbPass = shell.prompt('Please enter a password for the MySQL root account: ', type ="password");

try:
       print('\nDeploying the sandbox instances.');
       dba.deploy_sandbox_instance(3310, password = dbPass);
       print('.');
       dba.deploy_sandbox_instance(3320, password = dbPass);
       print('.');
       dba.deploy_sandbox_instance(3330, password = dbPass);
       print('.\nSandbox instances deployed successfully.\n\n');

       print('Setting up InnoDB Cluster...\n');
       shell.connect('root@localhost:3310', dbPass);

       cluster = dba.create_cluster("prodCluster");

       print('Adding instances to the Cluster.');
       cluster.add_instance('root@localhost:3320', password = dbPass);
       print('.');
       cluster.add_instance('root@localhost:3330', password = dbPass);
       print('.\nInstances successfully added to the Cluster.');

       print('\nInnoDB Cluster deployed successfully.\n');

except ValueError:
       print('\nThe InnoDB Cluster could not be created.\n\nError.\n');

AdminAPI MySQL Shell Command Line Integration

AdminAPI is also supported by MySQL Shell's Section 5.8, “API Command Line Integration”. This command line integration enables you to easily integrate AdminAPI into your environment. For example, to check the status of an InnoDB Cluster using the sandbox instance listening on port 1234:

$ mysqlsh root@localhost:1234 -- cluster status

This maps to the equivalent command in MySQL Shell:

mysql-js> cluster.status()