io.cloudevents.core.message.impl

Class GenericStructuredMessageReader

java.lang.Object

io.cloudevents.core.message.impl.BaseStructuredMessageReader

io.cloudevents.core.message.impl.GenericStructuredMessageReader

All Implemented Interfaces:

MessageReader, StructuredMessageReader, CloudEventReader

public class GenericStructuredMessageReader
extends BaseStructuredMessageReader

Generic implementation of a structured message.

Constructor Summary

Constructors

Constructor and Description
GenericStructuredMessageReader(EventFormat format, byte[] payload)

Method Summary

Modifier and Type	Method and Description
static GenericStructuredMessageReader	from(CloudEvent event, EventFormat format) Create a generic structured message from a CloudEvent
static GenericStructuredMessageReader	from(CloudEvent event, String contentType) Create a generic structured message from a CloudEvent
static GenericStructuredMessageReader	fromContentType(String contentType, byte[] payload) Create a generic structured message from a payload
<T> T	read(StructuredMessageWriter<T> writer) Read the message as structured encoded message using the provided writer

Methods inherited from class io.cloudevents.core.message.impl.BaseStructuredMessageReader

getEncoding, read

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface io.cloudevents.core.message.MessageReader

read, read, toEvent, toEvent

Constructor Detail

GenericStructuredMessageReader

public GenericStructuredMessageReader(EventFormat format,
                                      byte[] payload)

Method Detail

read

public <T> T read(StructuredMessageWriter<T> writer)
           throws CloudEventRWException,
                  IllegalStateException

Description copied from interface: MessageReader

Read the message as structured encoded message using the provided writer

Type Parameters:

T - the return type of the StructuredMessageWriter

Parameters:

writer - Structured Message writer

Returns:

the return value returned by StructuredMessageWriter.setEvent(EventFormat, byte[])

Throws:

CloudEventRWException - if something went wrong during the visit.

IllegalStateException - if the message is not in structured encoding.

fromContentType

public static GenericStructuredMessageReader fromContentType(String contentType,
                                                             byte[] payload)

Create a generic structured message from a payload

Parameters:

contentType - content type to use to resolve the EventFormat

payload - serialized event

Returns:

null if format was not found, otherwise returns the built message

from

@Nullable
public static GenericStructuredMessageReader from(CloudEvent event,
                                                            String contentType)

Create a generic structured message from a CloudEvent

Parameters:

event -

contentType - content type to use to resolve the EventFormat

Returns:

null if format was not found, otherwise returns the built message

from

public static GenericStructuredMessageReader from(CloudEvent event,
                                                  EventFormat format)

Create a generic structured message from a CloudEvent

Parameters:

event -

format -

Returns:

returns the built message