Manage packages

Package management enables version management and simplifies the upgrade and rollback processes for Functions, Sinks, and Sources. When you use the same function, sink and source in different namespaces, you can upload them to a common package management system.

Package name

A package is identified by five parts: type, tenant, namespace, package name, and version.

Part	Description
type	The type of the package. The following types are supported: function, sink and source.
name	The fully qualified name of the package: <tenant>/<namespace>/<package name>.
version	The version of the package.

The following is a code sample.

class PackageName {
   private final PackageType type;
   private final String namespace;
   private final String tenant;
   private final String name;
   private final String version;
}

enum PackageType {
   FUNCTION("function"), SINK("sink"), SOURCE("source");
}

Package URL

A package is located using a URL. The package URL is written in the following format:

<type>://<tenant>/<namespace>/<package name>@<version>

The following are package URL examples:

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

The package management system stores the data, versions and metadata of each package. The metadata is shown in the following table.

metadata	Description
description	The description of the package.
contact	The contact information of a package. For example, team email.
create_time	The time when the package is created.
modification_time	The time when the package is modified.
properties	A key/value map that stores your own information.

Permissions

The packages are organized by the tenant and namespace, so you can apply the tenant and namespace permissions to packages directly.

Package resources

You can use the package management with command line tools, REST API and Java client.

Upload a package

You can upload a package to the package management service in the following ways.

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 download a package to the package management service in the following ways.

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 to the package management service synchronously.

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

Download a package to the package management service asynchronously.

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

List all versions of a package

You can get a list of all versions of a package in the following ways.

pulsar-admin

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

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 the specified type packages under a namespace

You can get a list of all the packages with the given type in a namespace in the following ways.

pulsar-admin

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

REST API

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

JAVA

List all the packages with the given type in a namespace synchronously.

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

List all the packages with the given type in a namespace asynchronously.

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

Get the metadata of a package

You can get the metadata of a package in the following ways.

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 update the metadata of a package in the following ways.

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 a package metadata information synchronously.

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

Update a package metadata information asynchronously.

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

Delete a specified package

You can delete a specified package with its package name in the following ways.

pulsar-admin

The following command example deletes a package of version 0.1.

bin/pulsar-admin packages delete function://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);