Package com.google.cloud.spring.pubsub.integration

Class PubSubHeaderMapper

java.lang.Object

com.google.cloud.spring.pubsub.integration.PubSubHeaderMapper

All Implemented Interfaces:

org.springframework.integration.mapping.HeaderMapper<Map<String,String>>

public class PubSubHeaderMapper
extends Object
implements org.springframework.integration.mapping.HeaderMapper<Map<String,String>>

Maps headers from PubsubMessages to Messages and vice-versa.

By default, filters out headers called "id", "timestamp", "gcp_pubsub_acknowledgement" or "nativeHeaders" on the Message to PubsubMessage header conversion.

Constructor Summary

Constructors

Constructor	Description
PubSubHeaderMapper()

Method Summary

Modifier and Type	Method	Description
void	fromHeaders(org.springframework.messaging.MessageHeaders messageHeaders, Map<String,String> pubsubMessageHeaders)	Generate headers in PubsubMessage format from MessageHeaders.
void	setInboundHeaderPatterns(String... inboundHeaderPatterns)	Set the patterns of the headers to be mapped in toHeaders(Map).
void	setOutboundHeaderPatterns(String... outboundHeaderPatterns)	Set the patterns of the headers to be mapped in fromHeaders(MessageHeaders, Map).
Map<String,Object>	toHeaders(Map<String,String> pubsubMessageHeaders)	Generate headers in Message format from Map<String, String>.

Methods inherited from class java.lang.Object

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

Constructor Details

PubSubHeaderMapper

public PubSubHeaderMapper()

Method Details

setOutboundHeaderPatterns

public void setOutboundHeaderPatterns(String... outboundHeaderPatterns)

Set the patterns of the headers to be mapped in fromHeaders(MessageHeaders, Map). First patterns take precedence.

Parameters:

outboundHeaderPatterns - header patterns to be mapped

setInboundHeaderPatterns

public void setInboundHeaderPatterns(String... inboundHeaderPatterns)

Set the patterns of the headers to be mapped in toHeaders(Map). First patterns take precedence.

Parameters:

inboundHeaderPatterns - header patterns to be mapped

fromHeaders

public void fromHeaders(org.springframework.messaging.MessageHeaders messageHeaders,
 Map<String,String> pubsubMessageHeaders)

Generate headers in PubsubMessage format from MessageHeaders. All headers are converted into strings.

Will map only the headers that match the patterns in outboundHeaderPatternsMap.

Specified by:

fromHeaders in interface org.springframework.integration.mapping.HeaderMapper<Map<String,String>>

Parameters:

messageHeaders - headers to map from

pubsubMessageHeaders - headers in their final format

toHeaders

public Map<String,Object> toHeaders(Map<String,String> pubsubMessageHeaders)

Generate headers in Message format from Map<String, String>.

Will map only the headers that match the patterns in inboundHeaderPatternsMap.

Specified by:

toHeaders in interface org.springframework.integration.mapping.HeaderMapper<Map<String,String>>

Parameters:

pubsubMessageHeaders - headers in PubsubMessage format

Returns:

a map with headers in the Message format