Manage packages

Important

This page only shows some frequently used operations.

• For the latest and complete information about Pulsar admin, including commands, flags, descriptions, and more, see Pulsar admin doc.

• For the latest and complete information about REST API, including parameters, responses, samples, and more, see REST API doc.

• For the latest and complete information about Java admin API, including classes, methods, descriptions, and more, see Java admin API doc.

Package managers or package-management systems automatically manage packages in a consistent manner. These tools simplify the installation tasks, upgrade process, and deletion operations for users. A package is a minimal unit that a package manager deals with. In Pulsar, packages are organized at the tenant- and namespace-level to manage Pulsar Functions and Pulsar IO connectors (i.e., source and sink).

What is a package?

A package is a set of elements that the user would like to reuse in later operations. In Pulsar, a package can be a group of functions, sources, and sinks. You can define a package according to your needs.

The package management system in Pulsar stores the data and metadata of each package (as shown in the table below) and tracks the package versions.

Metadata	Description
description	The description of the package.
contact	The contact information of a package. For example, an email address of the developer team.
create_time	The time when the package is created.
modification_time	The time when the package is lastly modified.
properties	A user-defined key/value map to store other information.

How to use a package

Packages can efficiently use the same set of functions and IO connectors. For example, you can use the same function, source, and sink in multiple namespaces. The main steps are:

1. Create a package in the package manager by providing the following information: type, tenant, namespace, package name, and version.

   Component	Description
   type	Specify one of the supported package types: function, sink and source.
   tenant	Specify the tenant where you want to create the package.
   namespace	Specify the namespace where you want to create the package.
   name	Specify the complete name of the package, using the format <tenant>/<namespace>/<package name>.
   version	Specify the version of the package using the format MajorVerion.MinorVersion in numerals.

   The information you provide creates a URL for a package, in the format <type>://<tenant>/<namespace>/<package name>/<version>.

2. Upload the elements to the package, i.e., the functions, sources, and sinks that you want to use across namespaces.

3. Apply permissions to this package from various namespaces.

Now, you can use the elements you defined in the package by calling this package from within the package manager. The package manager locates it by the URL. For example,

sink://public/default/mysql-sink@1.0
function://my-tenant/my-ns/my-function@0.1
source://my-tenant/my-ns/mysql-cdc-source@2.3

Package management in Pulsar

You can use the command line tools, REST API, or the Java client to manage your package resources in Pulsar. More specifically, you can use these tools to upload, download, and delete a package, get the metadata and update the metadata of a package, get the versions of a package, and get all packages of a specific type under a namespace.

Upload a package

You can use the following commands to upload a package.

pulsar-admin

bin/pulsar-admin packages upload function://public/default/example@v0.1 --path package-file --description package-description

REST API

POST /admin/v3/packages/:type/:tenant/:namespace/:packageName/:version/upload

JAVA

Upload a package to the package management service synchronously.

  void upload(PackageMetadata metadata, String packageName, String path) throws PulsarAdminException;

Upload a package to the package management service asynchronously.

  CompletableFuture<Void> uploadAsync(PackageMetadata metadata, String packageName, String path);

Download a package

You can use the following commands to download a package.

pulsar-admin

bin/pulsar-admin packages download function://public/default/example@v0.1 --path package-file

REST API

GET /admin/v3/packages/:type/:tenant/:namespace/:packageName/:version/download

JAVA

Download a package from the package management service synchronously.

  void download(String packageName, String path) throws PulsarAdminException;

Download a package from the package management service asynchronously.

  CompletableFuture<Void> downloadAsync(String packageName, String path);

Delete a package

You can use the following commands to delete a package.

pulsar-admin

The following command deletes a package of version 0.1.

bin/pulsar-admin packages delete functions://public/default/example@v0.1

REST API

DELETE /admin/v3/packages/:type/:tenant/:namespace/:packageName/:version/delete

JAVA

Delete a specified package synchronously.

  void delete(String packageName) throws PulsarAdminException;

Delete a specified package asynchronously.

  CompletableFuture<Void> deleteAsync(String packageName);

Get the metadata of a package

You can use the following commands to get the metadata of a package.

pulsar-admin

bin/pulsar-admin packages get-metadata function://public/default/test@v1

REST API

GET /admin/v3/packages/:type/:tenant/:namespace/:packageName/:version/metadata/getMeta

JAVA

Get the metadata of a package synchronously.

  PackageMetadata getMetadata(String packageName) throws PulsarAdminException;

Get the metadata of a package asynchronously.

  CompletableFuture<PackageMetadata> getMetadataAsync(String packageName);

Update the metadata of a package

You can use the following commands to update the metadata of a package.

pulsar-admin

bin/pulsar-admin packages update-metadata function://public/default/example@v0.1 --description update-description

REST API

PUT /admin/v3/packages/:type/:tenant/:namespace/:packageName/:version/metadata/updateMeta

JAVA

Update the metadata of a package synchronously.

  void updateMetadata(String packageName, PackageMetadata metadata) throws PulsarAdminException;

Update the metadata of a package asynchronously.

  CompletableFuture<Void> updateMetadataAsync(String packageName, PackageMetadata metadata);

List all versions of a package

You can use the following commands to list all versions of a package.

pulsar-admin

bin/pulsar-admin packages list-versions type://tenant/namespace/packageName

REST API

GET /admin/v3/packages/:type/:tenant/:namespace/:packageName/listPackageVersion

JAVA

List all versions of a package synchronously.

  List<String> listPackageVersions(String packageName) throws PulsarAdminException;

List all versions of a package asynchronously.

  CompletableFuture<List<String>> listPackageVersionsAsync(String packageName);

List all packages of a specific type under a namespace

You can use the following commands to list all packages of a specific type under a namespace.

pulsar-admin

bin/pulsar-admin packages list --type function public/default

REST API

PUT /admin/v3/packages/:type/:tenant/:namespace/listPackages

JAVA

List all packages of a specific type under a namespace synchronously.

  List<String> listPackages(String type, String namespace) throws PulsarAdminException;

List all packages of a specific type under a namespace asynchronously.

  CompletableFuture<List<String>> listPackagesAsync(String type, String namespace);