Data Integration Registry User Guide

Introduction

Data Integration Registry—a subproject of Data Integration Platform—is a complementary application that provides a central location for storage and management of shared resources across one or more instances of Data Integration Platform.

The first implementation of the Registry supports versioned flows. Process group level dataflows created in Data Integration Platform can be placed under version control and stored in a registry. The registry organizes where flows are stored and manages the permissions to access, create, modify or delete them.

See the System Administrator’s Guide for information about Registry system requirements, installation, and configuration. Once Data Integration Registry is installed, use a supported web browser to view the UI.

Browser Support

Browser Version
Chrome Current and Current - 1
FireFox Current and Current - 1
Safari Current and Current - 1

Current and Current - 1 indicates that the UI is supported in the current stable release of that browser and the preceding one.For instance, if the current stable release is 62.X then the officially supported versions will be 62.X and 61.X.

For Safari, which releases major versions much less frequently, Current and Current - 1 simply represent the two latest releases.

The supported browser versions are driven by the capabilities the UI employs and the dependencies it uses. UI features will be developed and tested against the supported browsers. Any problem using a supported browser should be reported to Data Integration Platform.

Unsupported Browsers

While the UI may run successfully in unsupported browsers, it is not actively tested against them. Additionally, the UI is designed as a desktop experience and is not currently supported in mobile browsers.

Viewing the UI in Variably Sized Browsers

In most environments, all of the UI is visible in your browser. However, the UI has a responsive design that allows you to scroll through screens as needed, in smaller sized browsers or tablet environments.

Note: The minimum recommended screen size is 1080px X 445px.

Terminology

Flow: A process group level Data Integration dataflow that has been placed under version control and saved to the Registry.

Bundle: A binary artifact containing one or more extensions that can be run in Data Integration Platform.

Bucket: A container that stores and organizes versioned items, such as flows and bundles.

Policy: Defines a user or group’s ability to perform a given action.

Data Integration Registry User Interface

The Data Integration Registry UI displays the shared resources available and provides mechanisms for creating and administering users/groups, buckets and policies.

When the application is started, the user is able to navigate to the UI by going to the default address of http://localhost:60016/nifi-registry in a web browser. There are no permissions configured by default, so anyone is able to view and modify the flows and buckets. For information on securing the system, see the System Administrator’s Guide.

When an administrator navigates to the UI for the first time, the registry is empty as there are no flow resources available to share yet:

Empty Registry

The Buckets menu is available at the top left of the screen. It allows the user to display flows based on which bucket they are contained in. On the top right of the screen is the Settings menu which accesses functionality for managing users, groups, buckets and policies. Next to the Settings menu we will have a Help menu which accesses the Data Integration Registry Documentation.

Logging In

If Data Integration Registry is configured to run securely, users will have to be granted permissions to buckets by an administrator. For information on configuring Data Integration Registry to run securely, see the System Administrator’s Guide.

If the user is logging in with their username/password they will be presented with a screen to do so.

Login screen

Manage Flows

View a Flow

Flows in all buckets are listed in the main window of the UI by default. If the registry is secured, only the flows in the buckets that the user has access to are listed.

Bucket list

To see the flows from a particular bucket, select that bucket from the drop-down menu at the top left of the UI.

Select Bucket

Click on a flow to check its Description and Change Log:

Version description

The Change Log includes all versions that were saved for a flow. Clicking on the version reveals details about when the version was saved, which user committed the save, and any comments entered by the user.

Sorting & Filtering Flows

Flows can be sorted alphabetically by Name (ascending or descending) or by Update (newest or oldest) using the drop-down at the top right of the UI.

Flow sorting

The flow list can be filtered by:

  • flow name
  • flow description
  • flow ID
  • bucket name
  • bucket ID

Here is an example filtering by flow name:

Flow filtering

Delete a Flow

To delete a flow from the registry:

1.Click on the flow to see its details.

2.Select the “Actions” drop-down and click the “Delete” menu option.

Delete flow

3.Select “Delete” to confirm.

Confirm delete

Warning: It is possible to delete a flow that is actively being used in Data Integration Platform.

Manage Buckets

To manage buckets, enter the Administration section of the Registry by clicking the Settings menu on the top right of the UI. The Buckets window appears by default.

Sorting & Filtering Buckets

Buckets can be sorted alphabetically by Name (ascending or descending) using the up/down arrows.

Bucket sorting

The buckets listed can be filtered by:

  • bucket name
  • bucket description
  • bucket ID

Here is an example filtering by bucket name:

Bucket filtering

Create a Bucket

1.Select the “New Bucket” button.

New bucket

2.Enter the desired bucket name and select the “Create” button.

Create bucket

Note: To quickly create multiple buckets, check “Keep this dialog open after creating bucket”.

Delete a Bucket

1.Select the Delete button Delete bucket button in the row of the bucket.

Delete bucket

2.From the Delete Bucket dialog, select “Delete”.

Delete bucket dialog

Delete Multiple Buckets

1.Select the checkboxes in the rows of the desired buckets to delete.

Select checkboxes

2.Select the “Actions” drop-down and click the “Delete” option.

Delete option

3.From the Delete Buckets dialog, select “Delete”.

Delete bucket dialog

Edit a Bucket Name

1.Select the Manage button Manage bucket button in the row of the bucket.

Manage bucket

2.Enter a new name for the bucket and select the “Save” button.

Rename bucket dialog

Bucket Policies

Bucket policies define user privileges on buckets/flows in the Registry and in Data Integration Platform. The available permissions are:

  • All - In the Registry, the assigned user is able to view and delete flows in the bucket. In Data Integration Platform, the selected user is able to import flows from the bucket and commit changes to flows in the bucket.
  • Read - In the Registry, the assigned user is able to view flows in the bucket. In Data Integration Platform, the selected user is able to import flows from the bucket.
  • Write - In Data Integration Platform, the assigned user is able to commit changes to flows in the bucket.
  • Delete - In the Registry, the assigned user is able to delete flows in the bucket.

Note: Users would typically have Read permissions at a minimum. A user with Write permission would not commit changes to a flow if they were not able to import it initially. A user with Delete permission would not delete a flow if they could not view it.

Note: If a user has a bucket policy and the group that the user is in also has a policy, all policies are used to determine access. For example, assume User1 is in Group1, User1 has READ privileges on Bucket1 and Group1 has READ privileges on Bucket2. In this scenario, User1 will have READ privileges on both Bucket1 and Bucket2.

Create a Bucket Policy

1.Select the Manage button Manage bucket policy button in the row of the bucket.

2.Select the “New Policy” button.

New policy button

3.Select a user, check the desired permissions and select the “Apply” button:

Select user dialog

4.The policy is added to the bucket:

Added policy

Delete a Bucket Policy

1.Select the Manage button Manage bucket policy button in the row of the bucket.

2.Select the Delete button Delete bucket policy button in the row of the policy.

Remove user policies from bucket

3.From the Delete Policy dialog, select “Delete”.

Delete policy dialog

Manage Users & Groups

To manage users/groups, enter the Administration section of the Registry by clicking the Settings menu on the top right of the UI. Select Users from the top menu to open the Users window.

Sorting & Filtering Users/Groups

Users/groups can be sorted alphabetically by Name (ascending or descending) using the up/down arrows.

Users/groups

The Users/groups listed can be filtered by:

  • user name
  • user ID
  • group name
  • group ID

Here is an example of filtering by user name:

Filtering by user name

Add a User

1.Select the “Import Users” button.

Import users button

2.From the Import Users dialog, select “OK” to import users from the User Management Server.

Import users dialog

Delete a User

1.Select the Delete button Delete user button in the row of the user.

Delete user button\

2.From the Delete User dialog, select “Delete”.

Delete user dialog

Delete Multiple Users

1.Select the checkboxes in the rows of the desired users to delete.

Delete Multiple Users

2.Select the “Actions” drop-down and click the “Delete” option.

Delete user button

3.From the Delete Users dialog, select “Delete”.

Delete user dialog

Edit a User Name

1.Select the Manage button Edit username button in the row of the user.

Manage user button

2.Enter a new user name and select the “Save” button.

Edit user dialog

Warning: Some users cannot have their names edited. For example, those defined by LDAP. These users will be specially highlighted in the list.

Special Privileges

Special privileges are additional permissions that allow a user to manage or access certain aspects of the Registry. The special privileges are:

  • Can manage buckets - Allow a user to manage all buckets in the registry, as well as provide the user access to all buckets from a connected system (e.g., Data Integration Platform).
  • Can manage users - Allow a user to manage all registry users and groups.
  • Can manage policies - Allow a user to grant all registry users read, write, and delete permission to a bucket.
  • Can proxy user requests - Allow a connected system (e.g., Data Integration Platform) to process requests of authorized users of that system.

Grant Special Privileges to a User

1.Select the Manage button Manage special Privileges to a User button in the row of the user.

Manage user button

2.Check the desired privileges:

Special Privileges dialog

3.Changes made to special privileges are automatically saved.

Manage Groups

Add an Empty Group

1.With no users checked, select the “Actions” drop-down and click the “Create new group” option.

Create new group option

2.Enter a name for the Group and select the “Create” button.

Create new group dialog

Note: To quickly create multiple empty groups, check “Keep this dialog open after creating group”.

Add User to a Group

1.Select the Manage button Manage user to a group button in the row of the user.

2.Select the “Add To Group” button.

Add To Group button

3.In the “Add User to Groups” dialog, select the group(s) to add the user to. Select the “Add” button when all desired groups have been selected.

Add To Group dialog

4.The user is added to the group:

User added to group

Note: Groups cannot contain any other groups.

Create a New Group with Selected Users

1.Select the checkboxes in the rows of the desired users. From the “Actions” drop-down, click the “Create new group” option.

Create new group option

2.Enter a name for the Group and select the “Create” button.

Create new group dialog

3.The new group is created with the selected users as members:

Created new group with new users

Remove a User from a Group

There are two ways to remove a user from a group.

User Window

1.Select the Manage button Manage button in the row of the user.

2.In the Membership section of the window, select the Remove button Delete button in the row of the group.

Remove user from group button

Group Window

1.Select the Manage button Manage button in the row of the group. The Members tab is selected by default.

2.In the Membership section of the window, select the Remove button Delete button in the row of the user.

Remove user from group button

Other Group Level Actions

Editing group names, deleting groups, adding policies to/deleting policies from groups and granting special privileges to groups follow similar procedures described earlier for corresponding user level actions.

Manage Bundles

Bundles can be managed through the REST API.

Upload Bundle

A bundle can be uploaded to a bucket by making a POST request to the following REST end-point:

/nifi-registry-api/buckets/<bucketId>/bundles/<bundleType>

Replace bucketId with the id of the bucket where the bundle is being uploaded to and bundleType with the type of bundle being uploaded. Currently, the only supported bundle type is a NiFi Archive (NAR) which can be specified as nifi-nar.

The Content-Type of the request is expected to be multipart/form-data. An example of using curl to upload my-processors-1.0.0.nar would be the following:

curl -v -F file=@/path/to/my-processors-1.0.0.nar http://localhost:60016/nifi-registry-api/buckets/de8e08c9-592d-4e10-2116-b3752698f1d9/bundles/nifi-nar

Note: In order to upload a NAR to Data Integration Registry, it must contain the file META-INF/docs/extension-manifest.xml which is produced by the NAR Maven plugin, starting with version 1.3.0.

Download Bundle

There are two ways to download a bundle.

Bundle Coordinates

A bundle can be downloaded by using the combination of the bucket name and bundle coordinates, where bundle coordinates are the group, artifact, and version of the bundle.

To download a bundle by its coordinates, a GET request can be made to the following end-point:

/nifi-registry-api/extension-repository/{bucketName}/{groupId}/{artifactId}/{version}/content

The Content-Type of the response is application/octet-stream.

An example of using curl to download my-processors-1.0.0.nar from the Test bucket would be the following:

curl http://localhost:60016/nifi-registry-api/extension-repository/Test/com.test/my-processors/1.0.0/content > my-processors-1.0.0.nar

Bundle Id

A bundle can be downloaded by using the combination of its unique id and version. The unique id is an id assigned to the bundle when the first version of the bundle is uploaded to Data Integration Registry. This id is returned in the response of a successful upload.

To download a bundle by its id and version, a GET request can be made to the following end-point:

/nifi-registry-api/bundles/{bundleId}/versions/{version}/content

The Content-Type of the response is application/octet-stream.

An example of using curl to download my-processors-1.0.0.nar by id and version would be the following:

curl http://localhost:60016/nifi-registry-api/bundles/3db78035-e3ba-4cbf-820e-022f292bd68c/versions/1.0.0/content > my-processors-1.0.0.nar