org.apache.ignite.spi.discovery.tcp.ipfinder

Interface TcpDiscoveryIpFinder

All Known Implementing Classes:

TcpDiscoveryIpFinderAdapter, TcpDiscoveryJdbcIpFinder, TcpDiscoveryKubernetesIpFinder, TcpDiscoveryMulticastIpFinder, TcpDiscoverySharedFsIpFinder, TcpDiscoveryVmIpFinder

public interface TcpDiscoveryIpFinder

IP finder interface for TcpDiscoverySpi.

Method Summary

Modifier and Type	Method and Description
void	close() Closes this IP finder and releases any system resources associated with it.
Collection<InetSocketAddress>	getRegisteredAddresses() Gets all addresses registered in this finder.
void	initializeLocalAddresses(Collection<InetSocketAddress> addrs) Initializes addresses discovery SPI binds to.
boolean	isShared() Checks whether IP finder is shared or not.
void	onSpiContextDestroyed() Callback invoked prior to stopping grid before SPI context is destroyed.
void	onSpiContextInitialized(IgniteSpiContext spiCtx) Callback invoked when SPI context is initialized after TcpDiscoverySpi.spiStart(String) method is completed, SPI context can be stored for future access.
void	registerAddresses(Collection<InetSocketAddress> addrs) Registers new addresses.
void	unregisterAddresses(Collection<InetSocketAddress> addrs) Unregisters provided addresses.

Method Detail

onSpiContextInitialized

void onSpiContextInitialized(IgniteSpiContext spiCtx)
                      throws IgniteSpiException

Callback invoked when SPI context is initialized after TcpDiscoverySpi.spiStart(String) method is completed, SPI context can be stored for future access.

Parameters:

spiCtx - Spi context.

Throws:

IgniteSpiException - In case of error.

onSpiContextDestroyed

void onSpiContextDestroyed()

Callback invoked prior to stopping grid before SPI context is destroyed. Note that invoking SPI context after this callback is complete is considered illegal and may produce unknown results.

initializeLocalAddresses

void initializeLocalAddresses(Collection<InetSocketAddress> addrs)
                       throws IgniteSpiException

Initializes addresses discovery SPI binds to.

Parameters:

addrs - Addresses discovery SPI binds to.

Throws:

IgniteSpiException - In case of error.

getRegisteredAddresses

Collection<InetSocketAddress> getRegisteredAddresses()
                                              throws IgniteSpiException

Gets all addresses registered in this finder.

Returns:

All known addresses, potentially empty, but never null.

Throws:

IgniteSpiException - In case of error.

isShared

boolean isShared()

Checks whether IP finder is shared or not.

If this property is set to true then IP finder allows to add and remove addresses in runtime and this is how, for example, IP finder should work in Amazon EC2 environment or any other environment where IPs may not be known beforehand.

If this property is set to false then IP finder is immutable and all the addresses should be listed in configuration before Ignite start. This is the most use case for IP finders local to current VM. Since, usually such IP finders are created per each Ignite instance and all the known IPs are listed right away, but there is also an option to make such IP finders shared by setting this property to true and literally share it between local VM Ignite instances. This way user does not have to list any IPs before start, instead all starting nodes add their addresses to the finder, then get the registered addresses and continue with discovery procedure.

Returns:

true if IP finder is shared.

registerAddresses

void registerAddresses(Collection<InetSocketAddress> addrs)
                throws IgniteSpiException

Registers new addresses.

Implementation should accept duplicates quietly, but should not register address if it is already registered.

Parameters:

addrs - Addresses to register. Not null and not empty.

Throws:

IgniteSpiException - In case of error.

unregisterAddresses

void unregisterAddresses(Collection<InetSocketAddress> addrs)
                  throws IgniteSpiException

Unregisters provided addresses.

Implementation should accept addresses that are currently not registered quietly (just no-op).

Parameters:

addrs - Addresses to unregister. Not null and not empty.

Throws:

IgniteSpiException - In case of error.

close

void close()

Closes this IP finder and releases any system resources associated with it.