function main(organizationId, customModuleDisplayName, locationId = 'global') {
  // [START securitycenter_create_security_health_analytics_custom_module]
  // npm install '@google-cloud/securitycentermanagement'
  const {
    SecurityCenterManagementClient,
    protos,
  } = require('@google-cloud/securitycentermanagement');

  const client = new SecurityCenterManagementClient();

  const EnablementState =
    protos.google.cloud.securitycentermanagement.v1
      .SecurityHealthAnalyticsCustomModule.EnablementState;

  const Severity =
    protos.google.cloud.securitycentermanagement.v1.CustomConfig.Severity;

  /*
   * Required. The name of the parent resource of security health analytics module
   *     Its format is
   *    `organizations/[organization_id]/locations/[location_id]`
   *    `folders/[folder_id]/locations/[location_id]`
   *    `projects/[project_id]/locations/[location_id]`
   */
  const parent = `organizations/${organizationId}/locations/${locationId}`;

  /*
   * Required. Resource name of security health analytics module.
   *     Its format is
   *    `organizations/[organization_id]/locations/[location_id]/securityHealthAnalyticsCustomModules/[custom_module]`
   *    `folders/[folder_id]/locations/[location_id]/securityHealthAnalyticsCustomModules/[custom_module]`
   *    `projects/[project_id]/locations/[location_id]/securityHealthAnalyticsCustomModules/[custom_module]`
   */
  const name = `organizations/${organizationId}/locations/${locationId}/securityHealthAnalyticsCustomModules/custom_module`;

  // define the CEL expression here and this will scans for keys that have not been rotated in
  // the last 30 days, change it according to your requirements
  const expr = {
    expression: `has(resource.rotationPeriod) && (resource.rotationPeriod > duration('2592000s'))`,
  };

  // define the resource selector
  const resourceSelector = {
    resourceTypes: ['cloudkms.googleapis.com/CryptoKey'],
  };

  // define the custom module configuration, update the severity, description,
  // recommendation below
  const customConfig = {
    predicate: expr,
    resourceSelector: resourceSelector,
    severity: Severity.MEDIUM,
    description: 'add your description here',
    recommendation: 'add your recommendation here',
  };

  // define the security health analytics custom module configuration, update the
  // EnablementState below
  const securityHealthAnalyticsCustomModule = {
    name: name,
    displayName: customModuleDisplayName,
    enablementState: EnablementState.ENABLED,
    customConfig: customConfig,
  };

  async function createSecurityHealthAnalyticsCustomModule() {
    const [response] = await client.createSecurityHealthAnalyticsCustomModule({
      parent: parent,
      securityHealthAnalyticsCustomModule: securityHealthAnalyticsCustomModule,
    });
    console.log(
      'Security Health Analytics Custom Module creation succeeded: ',
      response
    );
  }

  createSecurityHealthAnalyticsCustomModule();
  // [END securitycenter_create_security_health_analytics_custom_module]
}
Create security health analytics custom module