Package org.apache.hadoop.registry.server.dns

Class BaseServiceRecordProcessor

java.lang.Object

org.apache.hadoop.registry.server.dns.BaseServiceRecordProcessor

All Implemented Interfaces:

ServiceRecordProcessor

Direct Known Subclasses:

ApplicationServiceRecordProcessor, ContainerServiceRecordProcessor

public abstract class BaseServiceRecordProcessor
extends java.lang.Object
implements ServiceRecordProcessor

Provides common service record processing logic.

Constructor Summary

Constructors

Constructor	Description
BaseServiceRecordProcessor(ServiceRecord record, java.lang.String path, java.lang.String domain, ZoneSelector zoneSelector)	Creates a service record processor.

Method Summary

Modifier and Type	Method	Description
protected java.lang.String	getPath()	Return the path associated with the record.
void	manageDNSRecords(org.apache.hadoop.registry.server.dns.RegistryDNS.RegistryCommand command)	Manages the creation and registration of service record generated DNS records.
protected void	registerRecordDescriptor(int type, java.util.List<org.apache.hadoop.registry.server.dns.BaseServiceRecordProcessor.RecordDescriptor> recordDescriptors)	Add the DNS record descriptor objects to the record type to descriptor mapping.
protected void	registerRecordDescriptor(int type, org.apache.hadoop.registry.server.dns.BaseServiceRecordProcessor.RecordDescriptor recordDescriptor)	Add the DNS record descriptor object to the record type to descriptor mapping.
protected org.xbill.DNS.Name	reverseIP(java.lang.String ip)	Reverse the string representation of the input IP address.
protected void	setPath(java.lang.String path)	Set the path associated with the record.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.registry.server.dns.ServiceRecordProcessor

getRecordTypes, initTypeToInfoMapping

Constructor Detail

BaseServiceRecordProcessor

public BaseServiceRecordProcessor(ServiceRecord record,
                                  java.lang.String path,
                                  java.lang.String domain,
                                  ZoneSelector zoneSelector)
                           throws java.lang.Exception

Creates a service record processor.

Parameters:

record - the service record.

path - the node path for the record in the registry.

domain - the target DNS domain for the service record associated DNS records.

zoneSelector - A selector of the best zone for a given DNS name.

Throws:

java.lang.Exception - if an issue is generated during instantiation.

Method Detail

reverseIP

protected org.xbill.DNS.Name reverseIP(java.lang.String ip)
                                throws java.net.UnknownHostException

Reverse the string representation of the input IP address.

Parameters:

ip - the string representation of the IP address.

Returns:

the reversed IP address.

Throws:

java.net.UnknownHostException - if the ip is unknown.

manageDNSRecords

public void manageDNSRecords(org.apache.hadoop.registry.server.dns.RegistryDNS.RegistryCommand command)
                      throws java.io.IOException

Manages the creation and registration of service record generated DNS records.

Specified by:

manageDNSRecords in interface ServiceRecordProcessor

Parameters:

command - the DNS registration command object (e.g. add_record, remove record)

Throws:

java.io.IOException - if the creation or registration generates an issue.

registerRecordDescriptor

protected void registerRecordDescriptor(int type,
                                        org.apache.hadoop.registry.server.dns.BaseServiceRecordProcessor.RecordDescriptor recordDescriptor)

Add the DNS record descriptor object to the record type to descriptor mapping.

Parameters:

type - the DNS record type.

recordDescriptor - the DNS record descriptor

registerRecordDescriptor

protected void registerRecordDescriptor(int type,
                                        java.util.List<org.apache.hadoop.registry.server.dns.BaseServiceRecordProcessor.RecordDescriptor> recordDescriptors)

Add the DNS record descriptor objects to the record type to descriptor mapping.

Parameters:

type - the DNS record type.

recordDescriptors - the DNS record descriptors

getPath

protected java.lang.String getPath()

Return the path associated with the record.

Returns:

the path.

setPath

protected void setPath(java.lang.String path)

Set the path associated with the record.

Parameters:

path - the path.