Data Catalog: Node.js Client

Google Cloud Data Catalog API client for Node.js

A comprehensive list of changes in each version may be found in the CHANGELOG.

Read more about the client libraries for Cloud APIs, including the older Google APIs Client Libraries, in Client Libraries Explained.

Table of contents:

Quickstart
Samples
Versioning
Contributing
License

Quickstart

Before you begin

Select or create a Cloud Platform project.
Enable billing for your project.
Enable the Data Catalog API.
Set up authentication with a service account so you can access the API from your local workstation.

Installing the client library

npm install @google-cloud/datacatalog

Using the client library

// Import the Google Cloud client library and create a client.
const {DataCatalogClient} = require('@google-cloud/datacatalog').v1;
const datacatalog = new DataCatalogClient();

async function quickstart() {
  // Common fields.
  let request;
  let responses;

  /**
   * TODO(developer): Uncomment the following lines before running the sample.
   */
  // const projectId = 'my_project'; // Google Cloud Platform project
  // const datasetId = 'demo_dataset';
  // const tableId = 'trips';

  // Currently, Data Catalog stores metadata in the
  // us-central1 region.
  const location = 'us-central1';

  // Create Fields.
  const fieldSource = {
    displayName: 'Source of data asset',
    type: {
      primitiveType: 'STRING',
    },
  };

  const fieldNumRows = {
    displayName: 'Number of rows in data asset',
    type: {
      primitiveType: 'DOUBLE',
    },
  };

  const fieldHasPII = {
    displayName: 'Has PII',
    type: {
      primitiveType: 'BOOL',
    },
  };

  const fieldPIIType = {
    displayName: 'PII type',
    type: {
      enumType: {
        allowedValues: [
          {
            displayName: 'EMAIL',
          },
          {
            displayName: 'SOCIAL SECURITY NUMBER',
          },
          {
            displayName: 'NONE',
          },
        ],
      },
    },
  };

  // Create Tag Template.
  const tagTemplateId = 'demo_tag_template';

  const tagTemplate = {
    displayName: 'Demo Tag Template',
    fields: {
      source: fieldSource,
      num_rows: fieldNumRows,
      has_pii: fieldHasPII,
      pii_type: fieldPIIType,
    },
  };

  const tagTemplatePath = datacatalog.tagTemplatePath(
    projectId,
    location,
    tagTemplateId
  );

  // Delete any pre-existing Template with the same name.
  try {
    request = {
      name: tagTemplatePath,
      force: true,
    };
    await datacatalog.deleteTagTemplate(request);
    console.log(`Deleted template: ${tagTemplatePath}`);
  } catch (error) {
    console.log(`Cannot delete template: ${tagTemplatePath}`);
  }

  // Create the Tag Template request.
  const locationPath = datacatalog.locationPath(projectId, location);

  request = {
    parent: locationPath,
    tagTemplateId: tagTemplateId,
    tagTemplate: tagTemplate,
  };

  // Execute the request.
  responses = await datacatalog.createTagTemplate(request);
  const createdTagTemplate = responses[0];
  console.log(`Created template: ${createdTagTemplate.name}`);

  // Lookup Data Catalog's Entry referring to the table.
  responses = await datacatalog.lookupEntry({
    linkedResource:
      '//bigquery.googleapis.com/projects/' +
      `${projectId}/datasets/${datasetId}/tables/${tableId}`,
  });
  const entry = responses[0];
  console.log(`Entry name: ${entry.name}`);
  console.log(`Entry type: ${entry.type}`);
  console.log(`Linked resource: ${entry.linkedResource}`);

  // Attach a Tag to the table.
  const tag = {
    name: entry.name,
    template: createdTagTemplate.name,
    fields: {
      source: {
        stringValue: 'copied from tlc_yellow_trips_2017',
      },
      num_rows: {
        doubleValue: 113496874,
      },
      has_pii: {
        boolValue: false,
      },
      pii_type: {
        enumValue: {
          displayName: 'NONE',
        },
      },
    },
  };

  request = {
    parent: entry.name,
    tag: tag,
  };

  // Create the Tag.
  await datacatalog.createTag(request);
  console.log(`Tag created for entry: ${entry.name}`);
}
quickstart();

Samples

Samples are in the samples/ directory. Each sample's README.md has instructions for running its sample.

Sample	Source Code	Try it
Data_catalog.create_entry	source code
Data_catalog.create_entry_group	source code
Data_catalog.create_tag	source code
Data_catalog.create_tag_template	source code
Data_catalog.create_tag_template_field	source code
Data_catalog.delete_entry	source code
Data_catalog.delete_entry_group	source code
Data_catalog.delete_tag	source code
Data_catalog.delete_tag_template	source code
Data_catalog.delete_tag_template_field	source code
Data_catalog.get_entry	source code
Data_catalog.get_entry_group	source code
Data_catalog.get_iam_policy	source code
Data_catalog.get_tag_template	source code
Data_catalog.list_entries	source code
Data_catalog.list_entry_groups	source code
Data_catalog.list_tags	source code
Data_catalog.lookup_entry	source code
Data_catalog.modify_entry_contacts	source code
Data_catalog.modify_entry_overview	source code
Data_catalog.rename_tag_template_field	source code
Data_catalog.rename_tag_template_field_enum_value	source code
Data_catalog.search_catalog	source code
Data_catalog.set_iam_policy	source code
Data_catalog.star_entry	source code
Data_catalog.test_iam_permissions	source code
Data_catalog.unstar_entry	source code
Data_catalog.update_entry	source code
Data_catalog.update_entry_group	source code
Data_catalog.update_tag	source code
Data_catalog.update_tag_template	source code
Data_catalog.update_tag_template_field	source code
Policy_tag_manager.create_policy_tag	source code
Policy_tag_manager.create_taxonomy	source code
Policy_tag_manager.delete_policy_tag	source code
Policy_tag_manager.delete_taxonomy	source code
Policy_tag_manager.get_iam_policy	source code
Policy_tag_manager.get_policy_tag	source code
Policy_tag_manager.get_taxonomy	source code
Policy_tag_manager.list_policy_tags	source code
Policy_tag_manager.list_taxonomies	source code
Policy_tag_manager.set_iam_policy	source code
Policy_tag_manager.test_iam_permissions	source code
Policy_tag_manager.update_policy_tag	source code
Policy_tag_manager.update_taxonomy	source code
Policy_tag_manager_serialization.export_taxonomies	source code
Policy_tag_manager_serialization.import_taxonomies	source code
Policy_tag_manager_serialization.replace_taxonomy	source code
Data_catalog.create_entry	source code
Data_catalog.create_entry_group	source code
Data_catalog.create_tag	source code
Data_catalog.create_tag_template	source code
Data_catalog.create_tag_template_field	source code
Data_catalog.delete_entry	source code
Data_catalog.delete_entry_group	source code
Data_catalog.delete_tag	source code
Data_catalog.delete_tag_template	source code
Data_catalog.delete_tag_template_field	source code
Data_catalog.get_entry	source code
Data_catalog.get_entry_group	source code
Data_catalog.get_iam_policy	source code
Data_catalog.get_tag_template	source code
Data_catalog.list_entries	source code
Data_catalog.list_entry_groups	source code
Data_catalog.list_tags	source code
Data_catalog.lookup_entry	source code
Data_catalog.rename_tag_template_field	source code
Data_catalog.search_catalog	source code
Data_catalog.set_iam_policy	source code
Data_catalog.test_iam_permissions	source code
Data_catalog.update_entry	source code
Data_catalog.update_entry_group	source code
Data_catalog.update_tag	source code
Data_catalog.update_tag_template	source code
Data_catalog.update_tag_template_field	source code
Policy_tag_manager.create_policy_tag	source code
Policy_tag_manager.create_taxonomy	source code
Policy_tag_manager.delete_policy_tag	source code
Policy_tag_manager.delete_taxonomy	source code
Policy_tag_manager.get_iam_policy	source code
Policy_tag_manager.get_policy_tag	source code
Policy_tag_manager.get_taxonomy	source code
Policy_tag_manager.list_policy_tags	source code
Policy_tag_manager.list_taxonomies	source code
Policy_tag_manager.set_iam_policy	source code
Policy_tag_manager.test_iam_permissions	source code
Policy_tag_manager.update_policy_tag	source code
Policy_tag_manager.update_taxonomy	source code
Policy_tag_manager_serialization.export_taxonomies	source code
Policy_tag_manager_serialization.import_taxonomies	source code
Quickstart	source code
Quickstart.test	source code

The Data Catalog Node.js Client API Reference documentation also contains samples.

Supported Node.js Versions

Our client libraries follow the Node.js release schedule. Libraries are compatible with all current active and maintenance versions of Node.js. If you are using an end-of-life version of Node.js, we recommend that you update as soon as possible to an actively supported LTS version.

Google's client libraries support legacy versions of Node.js runtimes on a best-efforts basis with the following warnings:

Legacy versions are not tested in continuous integration.
Some security patches and features cannot be backported.
Dependencies cannot be kept up-to-date.

Client libraries targeting some end-of-life versions of Node.js are available, and can be installed through npm dist-tags. The dist-tags follow the naming convention legacy-(version). For example, npm install @google-cloud/datacatalog@legacy-8 installs client libraries for versions compatible with Node.js 8.

Versioning

This library follows Semantic Versioning.

This library is considered to be stable. The code surface will not change in backwards-incompatible ways unless absolutely necessary (e.g. because of critical security issues) or with an extensive deprecation period. Issues and requests against stable libraries are addressed with the highest priority.

More Information: Google Cloud Platform Launch Stages

Contributing

Contributions welcome! See the Contributing Guide.

Please note that this README.md, the samples/README.md, and a variety of configuration files in this repository (including .nycrc and tsconfig.json) are generated from a central template. To edit one of these files, make an edit to its templates in directory.

License

Apache Version 2.0

See LICENSE