Class CloudMembershipService

java.lang.Object

org.apache.catalina.tribes.membership.MembershipServiceBase

org.apache.catalina.tribes.membership.cloud.CloudMembershipService

All Implemented Interfaces:

CloudMembershipServiceMBean, MembershipListener, MembershipService

public class CloudMembershipService
extends MembershipServiceBase
implements CloudMembershipServiceMBean

A MembershipService that uses Kubernetes API(default) or DNS to retrieve the members of a cluster.

The default implementation of the MembershipProvider component is the KubernetesMembershipProvider. The MembershipProvider can be configured by the membershipProviderClassName property. Possible shortcuts are kubernetes and dns. For dns look at the DNSMembershipProvider.

Configuration example

server.xml

 
 <Server ...

   <Service ...

     <Engine ...

       <Host ...

         <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster">
           <Channel className="org.apache.catalina.tribes.group.GroupChannel">
             <Membership className="org.apache.catalina.tribes.membership.cloud.CloudMembershipService"/>
           </Channel>
         </Cluster>
         ...
  
  

Field Summary

Fields

Modifier and Type	Field	Description
protected static final byte[]	INITIAL_ID
static final String	MEMBERSHIP_PROVIDER_CLASS_NAME
protected static final StringManager	sm

Fields inherited from class org.apache.catalina.tribes.membership.MembershipServiceBase

channel, listener, properties

Fields inherited from interface org.apache.catalina.tribes.MembershipService

MBR_RX, MBR_TX

Constructor Summary

Constructors

Constructor	Description
CloudMembershipService()

Method Summary

Modifier and Type	Method	Description
int	getConnectTimeout()
long	getExpirationTime()
Member	getLocalMember(boolean incAliveTime)	Get the local member.
MembershipProvider	getMembershipProvider()	Get the MembershipProvider
String	getMembershipProviderClassName()	Return the membership provider class.
Object	getProperty(String name)	Return a property.
int	getReadTimeout()
void	setConnectTimeout(int connectTimeout)
void	setDomain(byte[] domain)	Set the associated domain.
void	setExpirationTime(long expirationTime)
void	setLocalMemberProperties(String listenHost, int listenPort, int securePort, int udpPort)	Sets the local member properties for broadcasting.
void	setMembershipProvider(MembershipProvider memberProvider)
void	setMembershipProviderClassName(String membershipProviderClassName)	Set the membership provider class.
void	setPayload(byte[] payload)	Set a payload to be broadcasted with each membership broadcast.
boolean	setProperty(String name, String value)	Set a property.
void	setReadTimeout(int readTimeout)
void	start(int level)	Starts the membership service.
void	stop(int level)	Stops the membership service.

Methods inherited from class org.apache.catalina.tribes.membership.MembershipServiceBase

broadcast, findMemberByName, getChannel, getMember, getMembers, getMembersByName, getProperties, hasMembers, memberAdded, memberDisappeared, removeMembershipListener, setChannel, setMembershipListener, setProperties, start

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.catalina.tribes.membership.cloud.CloudMembershipServiceMBean

findMemberByName, getMembersByName, getProperties, hasMembers

Field Details

sm

protected static final StringManager sm

MEMBERSHIP_PROVIDER_CLASS_NAME

public static final String MEMBERSHIP_PROVIDER_CLASS_NAME

See Also:

• Constant Field Values

INITIAL_ID

protected static final byte[] INITIAL_ID

Constructor Details

CloudMembershipService

public CloudMembershipService()

Method Details

getProperty

public Object getProperty(String name)

Return a property.

Parameters:

name - the property name

Returns:

the property value

setProperty

public boolean setProperty(String name,
 String value)

Set a property.

Parameters:

name - the property name

value - the property value

Returns:

true if the property was successfully set

getMembershipProviderClassName

public String getMembershipProviderClassName()

Return the membership provider class.

Returns:

the classname

setMembershipProviderClassName

public void setMembershipProviderClassName(String membershipProviderClassName)

Set the membership provider class.

Parameters:

membershipProviderClassName - the class name

start

public void start(int level)
           throws Exception

Description copied from interface: MembershipService

Starts the membership service. If a membership listeners is added the listener will start to receive membership events.

Specified by:

start in interface MembershipService

Parameters:

level - - level MBR_RX starts listening for members, level MBR_TX starts broadcasting the server

Throws:

Exception - if the service fails to start.

stop

public void stop(int level)

Description copied from interface: MembershipService

Stops the membership service. If a membership listeners is added the listener will start to receive membership events.

Specified by:

stop in interface MembershipService

Parameters:

level - - level MBR_RX stops listening for members, level MBR_TX stops broadcasting the server

getLocalMember

public Member getLocalMember(boolean incAliveTime)

Description copied from interface: MembershipService

Get the local member.

Specified by:

getLocalMember in interface MembershipService

Parameters:

incAliveTime - true to set the alive time on the local member

Returns:

the member object that defines this member

setLocalMemberProperties

public void setLocalMemberProperties(String listenHost,
 int listenPort,
 int securePort,
 int udpPort)

Description copied from interface: MembershipService

Sets the local member properties for broadcasting.

Specified by:

setLocalMemberProperties in interface MembershipService

Parameters:

listenHost - Listen to host

listenPort - Listen to port

securePort - Use a secure port

udpPort - Use UDP

setPayload

public void setPayload(byte[] payload)

Description copied from interface: MembershipService

Set a payload to be broadcasted with each membership broadcast.

Specified by:

setPayload in interface MembershipService

Parameters:

payload - byte[]

setDomain

public void setDomain(byte[] domain)

Description copied from interface: MembershipService

Set the associated domain.

Specified by:

setDomain in interface MembershipService

Parameters:

domain - the domain

getMembershipProvider

public MembershipProvider getMembershipProvider()

Description copied from interface: MembershipService

Get the MembershipProvider

Specified by:

getMembershipProvider in interface MembershipService

Returns:

MembershipProvider

setMembershipProvider

public void setMembershipProvider(MembershipProvider memberProvider)

getConnectTimeout

public int getConnectTimeout()

Specified by:

getConnectTimeout in interface CloudMembershipServiceMBean

setConnectTimeout

public void setConnectTimeout(int connectTimeout)

getReadTimeout

public int getReadTimeout()

Specified by:

getReadTimeout in interface CloudMembershipServiceMBean

setReadTimeout

public void setReadTimeout(int readTimeout)

getExpirationTime

public long getExpirationTime()

Specified by:

getExpirationTime in interface CloudMembershipServiceMBean

setExpirationTime

public void setExpirationTime(long expirationTime)