Package io.awspring.cloud.sqs

Class MessageHeaderUtils

java.lang.Object

io.awspring.cloud.sqs.MessageHeaderUtils

public class MessageHeaderUtils
extends Object

Utility class for extracting MessageHeaders from a Message.

Since:

3.0

Author:

Tomaz Fernandes

Method Summary

Modifier and Type	Method	Description
static <T, U> Collection<T>	getHeader(Collection<Message<U>> messages, String headerName, Class<T> classToCast)	Get the specified header or throw an exception if such header is not present.
static <T> T	getHeader(Message<?> message, String headerName, Class<T> classToCast)	Get the specified header or throw an exception if such header is not present.
static String	getHeaderAsString(Message<?> message, String headerName)	Get the provided header as String or throw if not present.
static <T> String	getId(Collection<Message<T>> messages)	Return the messages' ID as a concatenated {@link String].
static String	getId(Message<?> message)	Return the message's ID as {@link String].

Methods inherited from class java.lang.Object

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

Method Details

getId

public static String getId(Message<?> message)

Return the message's ID as {@link String].

Parameters:

message - the message.

Returns:

the ID.

getId

public static <T> String getId(Collection<Message<T>> messages)

Return the messages' ID as a concatenated {@link String].

Parameters:

messages - the messages.

Returns:

the IDs.

getHeader

public static <T> T getHeader(Message<?> message,
 String headerName,
 Class<T> classToCast)

Get the specified header or throw an exception if such header is not present.

Type Parameters:

T - the class type.

Parameters:

message - the message.

headerName - the header name.

classToCast - the class to which the header should be cast to.

Returns:

the header value.

getHeader

public static <T,
U> Collection<T> getHeader(Collection<Message<U>> messages,
 String headerName,
 Class<T> classToCast)

Get the specified header or throw an exception if such header is not present.

Type Parameters:

T - the header class type.

U - the messages payload class type.

Parameters:

messages - the messages.

headerName - the header name.

classToCast - the class to which the header should be cast to.

Returns:

the header value.

getHeaderAsString

public static String getHeaderAsString(Message<?> message,
 String headerName)

Get the provided header as String or throw if not present.

Parameters:

message - the message.

headerName - the header name.

Returns:

the header value.