Create custom entry

Create a custom entry within an entry group.

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For detailed documentation that includes this code sample, see the following:

Code sample

Java

Before trying this sample, follow the Java setup instructions in the Data Catalog quickstart using client libraries. For more information, see the Data Catalog Java API reference documentation.

To authenticate to Data Catalog, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

import com.google.cloud.datacatalog.v1.ColumnSchema;
import com.google.cloud.datacatalog.v1.CreateEntryGroupRequest;
import com.google.cloud.datacatalog.v1.CreateEntryRequest;
import com.google.cloud.datacatalog.v1.DataCatalogClient;
import com.google.cloud.datacatalog.v1.Entry;
import com.google.cloud.datacatalog.v1.EntryGroup;
import com.google.cloud.datacatalog.v1.LocationName;
import com.google.cloud.datacatalog.v1.Schema;
import java.io.IOException;

// Sample to create custom entry
public class CreateCustomEntry {

  public static void main(String[] args) throws IOException {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "my-project";
    String entryGroupId = "onprem_entry_group";
    String entryId = "onprem_entry_id";
    createCustomEntry(projectId, entryGroupId, entryId);
  }

  public static void createCustomEntry(String projectId, String entryGroupId, String entryId)
      throws IOException {
    // Currently, Data Catalog stores metadata in the us-central1 region.
    String location = "us-central1";

    // Initialize client that will be used to send requests. This client only needs to be created
    // once, and can be reused for multiple requests. After completing all of your requests, call
    // the "close" method on the client to safely clean up any remaining background resources.
    try (DataCatalogClient dataCatalogClient = DataCatalogClient.create()) {
      // Construct the EntryGroup for the EntryGroup request.
      EntryGroup entryGroup =
          EntryGroup.newBuilder()
              .setDisplayName("My awesome Entry Group")
              .setDescription("This Entry Group represents an external system")
              .build();

      // Construct the EntryGroup request to be sent by the client.
      CreateEntryGroupRequest entryGroupRequest =
          CreateEntryGroupRequest.newBuilder()
              .setParent(LocationName.of(projectId, location).toString())
              .setEntryGroupId(entryGroupId)
              .setEntryGroup(entryGroup)
              .build();

      // Use the client to send the API request.
      EntryGroup createdEntryGroup = dataCatalogClient.createEntryGroup(entryGroupRequest);

      // Construct the Entry for the Entry request.
      Entry entry =
          Entry.newBuilder()
              .setUserSpecifiedSystem("onprem_data_system")
              .setUserSpecifiedType("onprem_data_asset")
              .setDisplayName("My awesome data asset")
              .setDescription("This data asset is managed by an external system.")
              .setLinkedResource("//my-onprem-server.com/dataAssets/my-awesome-data-asset")
              .setSchema(
                  Schema.newBuilder()
                      .addColumns(
                          ColumnSchema.newBuilder()
                              .setColumn("first_column")
                              .setDescription("This columns consists of ....")
                              .setMode("NULLABLE")
                              .setType("DOUBLE")
                              .build())
                      .addColumns(
                          ColumnSchema.newBuilder()
                              .setColumn("second_column")
                              .setDescription("This columns consists of ....")
                              .setMode("REQUIRED")
                              .setType("STRING")
                              .build())
                      .build())
              .build();

      // Construct the Entry request to be sent by the client.
      CreateEntryRequest entryRequest =
          CreateEntryRequest.newBuilder()
              .setParent(createdEntryGroup.getName())
              .setEntryId(entryId)
              .setEntry(entry)
              .build();

      // Use the client to send the API request.
      Entry createdEntry = dataCatalogClient.createEntry(entryRequest);
      System.out.printf("Custom entry created with name: %s", createdEntry.getName());
    }
  }
}

Node.js

Before trying this sample, follow the Node.js setup instructions in the Data Catalog quickstart using client libraries. For more information, see the Data Catalog Node.js API reference documentation.

To authenticate to Data Catalog, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

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

async function createCustomEntry() {
  // Create a custom entry within an entry group.

  /**
   * TODO(developer): Uncomment the following lines before running the sample.
   */
  // const projectId = 'my_project';
  // const entryGroupId = 'my_entry_group';
  // const entryId =  'my_entry';
  // const tagTemplateId = 'my_tag_template';

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

  // Delete any pre-existing Entry with the same name
  // that will be used to create the new Entry.
  try {
    const entryName = datacatalog.entryPath(
      projectId,
      location,
      entryGroupId,
      entryId
    );
    await datacatalog.deleteEntry({name: entryName});
    console.log(`Deleted Entry: ${entryName}`);
  } catch (err) {
    console.log('Entry does not exist.');
  }

  // Delete any pre-existing Entry Group with the same name
  // that will be used to construct the new EntryGroup.
  try {
    const entryGroupName = datacatalog.entryGroupPath(
      projectId,
      location,
      entryGroupId
    );
    await datacatalog.deleteEntryGroup({name: entryGroupName});
    console.log(`Deleted Entry Group: ${entryGroupName}`);
  } catch (err) {
    console.log('Entry Group does not exist.');
  }

  // Delete any pre-existing Template with the same name
  // that will be used to create a new Template.
  const tagTemplateName = datacatalog.tagTemplatePath(
    projectId,
    location,
    tagTemplateId
  );

  let tagTemplateRequest = {
    name: tagTemplateName,
    force: true,
  };

  try {
    await datacatalog.deleteTagTemplate(tagTemplateRequest);
    console.log(`Deleted template: ${tagTemplateName}`);
  } catch (error) {
    console.log(`Cannot delete template: ${tagTemplateName}`);
  }

  // Construct the EntryGroup for the EntryGroup request.
  const entryGroup = {
    displayName: 'My awesome Entry Group',
    description: 'This Entry Group represents an external system',
  };

  // Construct the EntryGroup request to be sent by the client.
  const entryGroupRequest = {
    parent: datacatalog.locationPath(projectId, location),
    entryGroupId: entryGroupId,
    entryGroup: entryGroup,
  };

  // Use the client to send the API request.
  const [createdEntryGroup] =
    await datacatalog.createEntryGroup(entryGroupRequest);
  console.log(`Created entry group: ${createdEntryGroup.name}`);

  // Construct the Entry for the Entry request.
  const entry = {
    userSpecifiedSystem: 'onprem_data_system',
    userSpecifiedType: 'onprem_data_asset',
    displayName: 'My awesome data asset',
    description: 'This data asset is managed by an external system.',
    linkedResource: '//my-onprem-server.com/dataAssets/my-awesome-data-asset',
    schema: {
      columns: [
        {
          column: 'first_column',
          description: 'This columns consists of ....',
          mode: 'NULLABLE',
          type: 'STRING',
        },
        {
          column: 'second_column',
          description: 'This columns consists of ....',
          mode: 'NULLABLE',
          type: 'DOUBLE',
        },
      ],
    },
  };

  // Construct the Entry request to be sent by the client.
  const entryRequest = {
    parent: datacatalog.entryGroupPath(projectId, location, entryGroupId),
    entryId: entryId,
    entry: entry,
  };

  // Use the client to send the API request.
  const [createdEntry] = await datacatalog.createEntry(entryRequest);
  console.log(`Created entry: ${createdEntry.name}`);

  // Create a Tag Template.
  // For more field types, including ENUM, please refer to
  // https://cloud.google.com/data-catalog/docs/quickstarts/quickstart-search-tag#data-catalog-quickstart-nodejs.
  const fieldSource = {
    displayName: 'Source of data asset',
    type: {
      primitiveType: 'STRING',
    },
  };

  const tagTemplate = {
    displayName: 'Demo Tag Template',
    fields: {
      source: fieldSource,
    },
  };

  tagTemplateRequest = {
    parent: datacatalog.locationPath(projectId, location),
    tagTemplateId: tagTemplateId,
    tagTemplate: tagTemplate,
  };

  // Use the client to send the API request.
  const [createdTagTemplate] =
    await datacatalog.createTagTemplate(tagTemplateRequest);
  console.log(`Created template: ${createdTagTemplate.name}`);

  // Attach a Tag to the custom Entry.
  const tag = {
    template: createdTagTemplate.name,
    fields: {
      source: {
        stringValue: 'On-premises system name',
      },
    },
  };

  const tagRequest = {
    parent: createdEntry.name,
    tag: tag,
  };

  // Use the client to send the API request.
  const [createdTag] = await datacatalog.createTag(tagRequest);
  console.log(`Created tag: ${createdTag.name}`);
}
createCustomEntry();

Python

Before trying this sample, follow the Python setup instructions in the Data Catalog quickstart using client libraries. For more information, see the Data Catalog Python API reference documentation.

To authenticate to Data Catalog, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

# Import required modules.
from google.cloud import datacatalog_v1

# Google Cloud Platform project.
project_id = "my-project"
# Entry Group to be created.
entry_group_id = "my_new_entry_group_id"
# Entry to be created.
entry_id = "my_new_entry_id"
# Currently, Data Catalog stores metadata in the us-central1 region.
location = "us-central1"

datacatalog = datacatalog_v1.DataCatalogClient()

# Create an Entry Group.
entry_group_obj = datacatalog_v1.types.EntryGroup()
entry_group_obj.display_name = "My awesome Entry Group"
entry_group_obj.description = "This Entry Group represents an external system"

entry_group = datacatalog.create_entry_group(
    parent=datacatalog_v1.DataCatalogClient.common_location_path(
        project_id, location
    ),
    entry_group_id=entry_group_id,
    entry_group=entry_group_obj,
)
entry_group_name = entry_group.name
print("Created entry group: {}".format(entry_group_name))

# Create an Entry.
entry = datacatalog_v1.types.Entry()
entry.user_specified_system = "onprem_data_system"
entry.user_specified_type = "onprem_data_asset"
entry.display_name = "My awesome data asset"
entry.description = "This data asset is managed by an external system."
entry.linked_resource = "//my-onprem-server.com/dataAssets/my-awesome-data-asset"

# Create the Schema, this is optional.
entry.schema.columns.append(
    datacatalog_v1.types.ColumnSchema(
        column="first_column",
        type_="STRING",
        description="This columns consists of ....",
        mode=None,
    )
)

entry.schema.columns.append(
    datacatalog_v1.types.ColumnSchema(
        column="second_column",
        type_="DOUBLE",
        description="This columns consists of ....",
        mode=None,
    )
)

entry = datacatalog.create_entry(
    parent=entry_group_name, entry_id=entry_id, entry=entry
)
print("Created entry: {}".format(entry.name))

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