Cloud PubSub Client - Class Schema (2.2.1)

Reference documentation and code samples for the Cloud PubSub Client class Schema.

Represents a Pub/Sub Schema resource.

Schema Support for Cloud Pub/Sub allows you to register schemas in common formats as standalone versioned resources, associates schemas with Pub/Sub topics, validates message structure on-publish, and provides APIs parameterized on your entity types.

Example:

use Google\Cloud\PubSub\PubSubClient;

$client = new PubSubClient(['projectId' => 'my-project']);
$schema = $client->schema('my-schema');

Namespace

Google \ Cloud \ PubSub

Methods

__construct

Parameters
Name Description
requestHandler Google\Cloud\Core\RequestHandler
serializer Google\ApiCore\Serializer

The serializer instance to encode/decode messages.
name string

The schema name.
info array

[optional] Schema data.

name

Get the schema resource name.

Example:

$name = $schema->name();
Returns
Type Description
string

delete

Delete the schema.

Example:

$schema->delete();
Parameter
Name Description
options array

[optional] Configuration options
Returns
Type Description
void

info

Get schema information.

Since this method will throw an exception if the schema is not found, you may find that Google\Cloud\PubSub\Schema::exists() is a better fit for a true/false check.

This method will use the previously cached result, if available. To force a refresh from the API, use Google\Cloud\PubSub\Schema::reload().

Example:

$info = $schema->info();
echo $info['name']; // projects/my-awesome-project/schemas/my-schema
Parameters
Name Description
options array

Configuration Options
↳ view string

The set of Schema fields to return in the response. If not set, returns Schemas with name and type, but not definition. Set to FULL to retrieve all fields. For allowed values, use constants defined on Google\Cloud\PubSub\V1\SchemaView. Note: for this method, $options.view defaults to FULL.
Returns
Type Description
array

reload

Get schema information from the API.

Since this method will throw an exception if the schema is not found, you may find that Google\Cloud\PubSub\Schema::exists() is a better fit for a true/false check.

This method will retrieve a new result from the API. To use a previously cached result, if one exists, use Google\Cloud\PubSub\Schema::info().

Example:

$info = $schema->reload();
echo $info['name']; // projects/my-awesome-project/schemas/my-schema
Parameters
Name Description
options array

Configuration Options
↳ view string

The set of Schema fields to return in the response. If not set, returns Schemas with name and type, but not definition. Set to FULL to retrieve all fields. For allowed values, use constants defined on Google\Cloud\PubSub\V1\SchemaView. Note: for this method, $options.view defaults to FULL.
Returns
Type Description
array

exists

Check if a schema exists.

Example:

if ($schema->exists()) {
    echo 'Schema exists';
}
Parameter
Name Description
options array

[optional] Configuration Options
Returns
Type Description
bool

listRevisions

See also:

Parameter
Name Description
options array

[optional] Configuration Options
Returns
Type Description
array

commit

See also:

Parameters
Name Description
definition string

The definition of the schema. This should contain a string representing the full definition of the schema that is a valid schema definition of the type specified in type. See Schema for details.
type string

The schema type. Allowed values are AVRO and PROTOCOL_BUFFER.
options array

[optional] Configuration options
Returns
Type Description
array revision created

deleteRevision

See also:

Parameters
Name Description
revisionId string

The revisionId
options mixed
Returns
Type Description
array deleted revision