io.cloudevents.core.message.impl

Class BaseGenericBinaryMessageReaderImpl<HK,HV>

java.lang.Object

io.cloudevents.core.message.impl.BaseBinaryMessageReader

io.cloudevents.core.message.impl.BaseGenericBinaryMessageReaderImpl<HK,HV>

Type Parameters:

HK - Header key type

HV - Header value type

All Implemented Interfaces:

MessageReader, StructuredMessageReader, CloudEventReader

public abstract class BaseGenericBinaryMessageReaderImpl<HK,HV>
extends BaseBinaryMessageReader

This class implements a Binary MessageReader, providing common logic to most protocol bindings which supports both Binary and Structured mode.

Content-type is handled separately using a key not prefixed with CloudEvents header prefix.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BaseGenericBinaryMessageReaderImpl(SpecVersion version, CloudEventData body)

Method Summary

Modifier and Type	Method and Description
protected abstract void	forEachHeader(BiConsumer<HK,HV> fn) Iterate over all the headers in the headers map.
protected abstract boolean	isCloudEventsHeader(HK key)
protected abstract boolean	isContentTypeHeader(HK key)
<T extends CloudEventWriter<V>,V> V	read(CloudEventWriterFactory<T,V> writerFactory, CloudEventDataMapper<? extends CloudEventData> mapper) Read the message as binary encoded message using the provided writer factory.
protected abstract String	toCloudEventsKey(HK key)
protected abstract String	toCloudEventsValue(HV value)

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

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

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

from, from

Constructor Detail

BaseGenericBinaryMessageReaderImpl

protected BaseGenericBinaryMessageReaderImpl(SpecVersion version,
                                             CloudEventData body)

Method Detail

read

public <T extends CloudEventWriter<V>,V> V read(CloudEventWriterFactory<T,V> writerFactory,
                                                CloudEventDataMapper<? extends CloudEventData> mapper)
                                         throws CloudEventRWException,
                                                IllegalStateException

Description copied from interface: MessageReader

Read the message as binary encoded message using the provided writer factory.

Type Parameters:

T - the CloudEventWriter type

V - the return type of the CloudEventWriter

Parameters:

writerFactory - a factory that generates a reader starting from the SpecVersion of the event

mapper - the mapper to use to map the data, if any.

Throws:

CloudEventRWException - if something went wrong during the visit.

IllegalStateException - if the message is not in binary encoding.

isContentTypeHeader

protected abstract boolean isContentTypeHeader(HK key)

Parameters:

key - header key

Returns:

true if this header is the content type header, false otherwise

isCloudEventsHeader

protected abstract boolean isCloudEventsHeader(HK key)

Parameters:

key - header key

Returns:

true if this header is a CloudEvents header, false otherwise

toCloudEventsKey

protected abstract String toCloudEventsKey(HK key)

Parameters:

key - header key

Returns:

the key converted to a CloudEvents context attribute/extension name

forEachHeader

protected abstract void forEachHeader(BiConsumer<HK,HV> fn)

Iterate over all the headers in the headers map.

Parameters:

fn - header consumer

toCloudEventsValue

protected abstract String toCloudEventsValue(HV value)

Parameters:

value - header key

Returns:

the value converted to a valid CloudEvents attribute value as String.