CPSubsystemConfig (Hazelcast Root 4.2 API)

java.lang.Object
- com.hazelcast.config.cp.CPSubsystemConfig

public class CPSubsystemConfig
extends Object

Contains configuration options for CP Subsystem.

You can check the following code snippet to see how CP Subsystem can be initialized by configuring only the setCPMemberCount(int) value. In this code, we set 3 to setCPMemberCount(int), and we don't set any value to setGroupSize(int). Therefore, there will be 3 CP members in CP Subsystem and each CP groups will have 3 CP members as well.

     int cpMemberCount = 3;
     int apMemberCount = 2;
     int memberCount = cpMemberCount + apMemberCount;
     Config config = new Config();
     config.getCPSubsystemConfig().setCPMemberCount(cpMemberCount);
     HazelcastInstance[] instances = new HazelcastInstance[memberCount];
     for (int i = 0; i < memberCount; i++) {
         instances[i] = Hazelcast.newHazelcastInstance(config);
     }

     // update an atomic long via a CP member
     IAtomicLong cpLong = instances[0].getCPSubsystem().getAtomicLong("myLong");
     cpLong.set(10);

     // access to its value via an AP member
     cpLong = instances[cpMemberCount].getCPSubsystem().getAtomicLong("myLong");
     System.out.println(cpLong.get());

In the following code snippet, we configure setCPMemberCount(int) to 5 and setGroupSize(int) to 3, therefore there will be 5 CP members and CP groups will be initialized by selecting 3 random CP members among them.

     int cpMemberCount = 5;
     int apMemberCount = 2;
     int groupSize = 3;
     int memberCount = cpMemberCount + apMemberCount;
     Config config = new Config();
     config.getCPSubsystemConfig()
           .setCPMemberCount(cpMemberCount)
           .setGroupSize(groupSize);
     HazelcastInstance[] instances = new HazelcastInstance[memberCount];
     for (int i = 0; i < memberCount; i++) {
         instances[i] = Hazelcast.newHazelcastInstance(config);
     }

     // update an atomic long via a CP member
     IAtomicLong cpLong = instances[0].getCPSubsystem().getAtomicLong("myLong");
     cpLong.set(10);

     // access to its value via an AP member
     cpLong = instances[cpMemberCount].getCPSubsystem().getAtomicLong("myLong");
     System.out.println(cpLong.get());

See Also:: CPSubsystem, CPMember, CPSession

Field Summary

Fields
Modifier and Type	Field and Description
`static String`	`CP_BASE_DIR_DEFAULT` The default directory name for storing CP data.
`static int`	`DEFAULT_DATA_LOAD_TIMEOUT_SECONDS` The default data load timeout duration for restoring CP data from disk.
`static int`	`DEFAULT_HEARTBEAT_INTERVAL_SECONDS` The default duration for the periodically-committed CP session heartbeats.
`static int`	`DEFAULT_MISSING_CP_MEMBER_AUTO_REMOVAL_SECONDS` The default duration to wait before automatically removing a missing CP member from CP Subsystem.
`static int`	`DEFAULT_SESSION_TTL_SECONDS` The default value for a CP session to be kept alive after the last heartbeat it has received.
`static int`	`MAX_GROUP_SIZE` The maximum number of CP members that can form a CP group.
`static int`	`MIN_GROUP_SIZE` The minimum number of CP members that can form a CP group.

Constructor Summary

Constructors
Constructor and Description

CPSubsystemConfig()

CPSubsystemConfig(CPSubsystemConfig config)

Constructors
Constructor and Description
`CPSubsystemConfig()`
`CPSubsystemConfig(CPSubsystemConfig config)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`CPSubsystemConfig`	`addLockConfig(FencedLockConfig lockConfig)` Adds the `FencedLock` configuration.
`CPSubsystemConfig`	`addSemaphoreConfig(SemaphoreConfig semaphoreConfig)` Adds the CP `ISemaphore` configuration.
`boolean`	`equals(Object o)`
`FencedLockConfig`	`findLockConfig(String name)` Returns the `FencedLock` configuration for the given name.
`SemaphoreConfig`	`findSemaphoreConfig(String name)` Returns the CP `ISemaphore` configuration for the given name.
`File`	`getBaseDir()` Returns the base directory for persisting CP data.
`int`	`getCPMemberCount()` Returns the number of CP members that will initialize CP Subsystem.
`int`	`getDataLoadTimeoutSeconds()` Returns the timeout duration for CP members to restore their data from stable storage.
`int`	`getGroupSize()` Returns the number of CP members to form CP groups.
`Map<String,FencedLockConfig>`	`getLockConfigs()` Returns the map of `FencedLock` configurations
`int`	`getMissingCPMemberAutoRemovalSeconds()` Returns the duration to wait before automatically removing a missing CP member from CP Subsystem
`RaftAlgorithmConfig`	`getRaftAlgorithmConfig()` Returns configuration options for Hazelcast's Raft consensus algorithm implementation
`Map<String,SemaphoreConfig>`	`getSemaphoreConfigs()` Returns the map of CP `ISemaphore` configurations
`int`	`getSessionHeartbeatIntervalSeconds()` Returns the interval for the periodically-committed CP session heartbeats.
`int`	`getSessionTimeToLiveSeconds()` Returns the duration for a CP session to be kept alive after its last session heartbeat.
`int`	`hashCode()`
`boolean`	`isFailOnIndeterminateOperationState()` Returns the value to determine if CP Subsystem API calls will fail when result of an API call becomes indeterminate.
`boolean`	`isPersistenceEnabled()` Returns whether CP Subsystem Persistence enabled on this member.
`CPSubsystemConfig`	`setBaseDir(File baseDir)` Sets the base directory for persisting CP data.
`CPSubsystemConfig`	`setCPMemberCount(int cpMemberCount)` Sets the CP member count to initialize CP Subsystem.
`CPSubsystemConfig`	`setDataLoadTimeoutSeconds(int dataLoadTimeoutSeconds)` Sets the timeout duration for CP members to restore their data from stable storage.
`CPSubsystemConfig`	`setFailOnIndeterminateOperationState(boolean failOnIndeterminateOperationState)` Sets the value to determine if CP Subsystem calls will fail when result of an API call becomes indeterminate.
`CPSubsystemConfig`	`setGroupSize(int groupSize)` Sets the number of CP members to form CP groups.
`CPSubsystemConfig`	`setLockConfigs(Map<String,FencedLockConfig> lockConfigs)` Sets the map of `FencedLock` configurations, mapped by config name.
`CPSubsystemConfig`	`setMissingCPMemberAutoRemovalSeconds(int missingCPMemberAutoRemovalSeconds)` Sets the duration to wait before automatically removing a missing CP member from CP Subsystem.
`CPSubsystemConfig`	`setPersistenceEnabled(boolean persistenceEnabled)` Sets whether CP Subsystem Persistence is enabled on this member.
`CPSubsystemConfig`	`setRaftAlgorithmConfig(RaftAlgorithmConfig raftAlgorithmConfig)` Sets configuration options for Hazelcast's Raft consensus algorithm implementation
`CPSubsystemConfig`	`setSemaphoreConfigs(Map<String,SemaphoreConfig> semaphoreConfigs)` Sets the map of CP `ISemaphore` configurations, mapped by config name.
`CPSubsystemConfig`	`setSessionHeartbeatIntervalSeconds(int sessionHeartbeatIntervalSeconds)` Sets the interval for the periodically-committed CP session heartbeats.
`CPSubsystemConfig`	`setSessionTimeToLiveSeconds(int sessionTimeToLiveSeconds)` Sets the duration for a CP session to be kept alive after its last session heartbeat.
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - DEFAULT_SESSION_TTL_SECONDS
```
public static final int DEFAULT_SESSION_TTL_SECONDS
```
    The default value for a CP session to be kept alive after the last heartbeat it has received. See sessionTimeToLiveSeconds
  - DEFAULT_HEARTBEAT_INTERVAL_SECONDS
```
public static final int DEFAULT_HEARTBEAT_INTERVAL_SECONDS
```
    The default duration for the periodically-committed CP session heartbeats. See sessionHeartbeatIntervalSeconds
    
    See Also:
    
    Constant Field Values
  - MIN_GROUP_SIZE
```
public static final int MIN_GROUP_SIZE
```
    The minimum number of CP members that can form a CP group. See groupSize
    
    See Also:
    
    Constant Field Values
  - MAX_GROUP_SIZE
```
public static final int MAX_GROUP_SIZE
```
    The maximum number of CP members that can form a CP group. Theoretically, there is no upper bound on the number of CP members to run the Raft consensus algorithm. However, since the Raft consensus algorithm synchronously replicates operations to the majority of a CP group members, a larger CP group means more replication overhead, and memory consumption as well. The current maximum CP group size limit offers a sufficient degree of fault tolerance for CP Subsystem usages.
    See groupSize
    
    See Also:
    
    Constant Field Values
  - DEFAULT_MISSING_CP_MEMBER_AUTO_REMOVAL_SECONDS
```
public static final int DEFAULT_MISSING_CP_MEMBER_AUTO_REMOVAL_SECONDS
```
    The default duration to wait before automatically removing a missing CP member from CP Subsystem. See missingCPMemberAutoRemovalSeconds
  - CP_BASE_DIR_DEFAULT
```
public static final String CP_BASE_DIR_DEFAULT
```
    The default directory name for storing CP data. See baseDir
    
    See Also:
    
    Constant Field Values
  - DEFAULT_DATA_LOAD_TIMEOUT_SECONDS
```
public static final int DEFAULT_DATA_LOAD_TIMEOUT_SECONDS
```
    The default data load timeout duration for restoring CP data from disk. See dataLoadTimeoutSeconds
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - CPSubsystemConfig
```
public CPSubsystemConfig()
```
  - CPSubsystemConfig
```
public CPSubsystemConfig(CPSubsystemConfig config)
```
- Method Detail
  - getCPMemberCount
```
public int getCPMemberCount()
```
    Returns the number of CP members that will initialize CP Subsystem. CP Subsystem is disabled if it is 0.
    
    Returns:
    
    the number of CP members that will initialize CP Subsystem
  - setCPMemberCount
```
public CPSubsystemConfig setCPMemberCount(int cpMemberCount)
```
    Sets the CP member count to initialize CP Subsystem. CP Subsystem is disabled if 0. Cannot be smaller than MIN_GROUP_SIZE and groupSize
    
    Returns:
    
    this config instance
  - getGroupSize
```
public int getGroupSize()
```
    Returns the number of CP members to form CP groups. Returns 0 if cpMemberCount is 0. If group size is not set: - returns the CP member count if it is an odd number, - returns the CP member count - 1 if it is an even number.
    
    Returns:
    
    the number of CP members to form CP groups
  - setGroupSize
```
public CPSubsystemConfig setGroupSize(int groupSize)
```
    Sets the number of CP members to form CP groups. Must be an odd number between MIN_GROUP_SIZE and MAX_GROUP_SIZE.
    
    Returns:
    
    this config instance
  - getSessionTimeToLiveSeconds
```
public int getSessionTimeToLiveSeconds()
```
    Returns the duration for a CP session to be kept alive after its last session heartbeat.
    
    Returns:
    
    the duration for a CP session to be kept alive after its last session heartbeat
  - setSessionTimeToLiveSeconds
```
public CPSubsystemConfig setSessionTimeToLiveSeconds(int sessionTimeToLiveSeconds)
```
    Sets the duration for a CP session to be kept alive after its last session heartbeat.
    
    Returns:
    
    this config instance
  - getSessionHeartbeatIntervalSeconds
```
public int getSessionHeartbeatIntervalSeconds()
```
    Returns the interval for the periodically-committed CP session heartbeats.
    
    Returns:
    
    the interval for the periodically-committed CP session heartbeats
  - setSessionHeartbeatIntervalSeconds
```
public CPSubsystemConfig setSessionHeartbeatIntervalSeconds(int sessionHeartbeatIntervalSeconds)
```
    Sets the interval for the periodically-committed CP session heartbeats.
    
    Returns:
    
    this config instance
  - getMissingCPMemberAutoRemovalSeconds
```
public int getMissingCPMemberAutoRemovalSeconds()
```
    Returns the duration to wait before automatically removing a missing CP member from CP Subsystem
    
    Returns:
    
    the duration to wait before automatically removing a missing CP member from the CP Subsystem
  - setMissingCPMemberAutoRemovalSeconds
```
public CPSubsystemConfig setMissingCPMemberAutoRemovalSeconds(int missingCPMemberAutoRemovalSeconds)
```
    Sets the duration to wait before automatically removing a missing CP member from CP Subsystem.
    
    Returns:
    
    this config instance
  - isFailOnIndeterminateOperationState
```
public boolean isFailOnIndeterminateOperationState()
```
    Returns the value to determine if CP Subsystem API calls will fail when result of an API call becomes indeterminate.
    
    Returns:
    
    the value to determine if CP Subsystem calls will fail when result of an API call becomes indeterminate
  - setFailOnIndeterminateOperationState
```
public CPSubsystemConfig setFailOnIndeterminateOperationState(boolean failOnIndeterminateOperationState)
```
    Sets the value to determine if CP Subsystem calls will fail when result of an API call becomes indeterminate.
    
    Returns:
    
    this config instance
  - isPersistenceEnabled
```
public boolean isPersistenceEnabled()
```
    Returns whether CP Subsystem Persistence enabled on this member.
    
    Returns:
    
    true if CP Subsystem Persistence is enabled, false otherwise
  - setPersistenceEnabled
```
public CPSubsystemConfig setPersistenceEnabled(boolean persistenceEnabled)
```
    Sets whether CP Subsystem Persistence is enabled on this member.
    
    Returns:
    
    this config instance
  - getBaseDir
```
public File getBaseDir()
```
    Returns the base directory for persisting CP data. Can be an absolute or relative path to the node startup directory.
    
    Returns:
    
    returns the base directory for CP data
  - setBaseDir
```
public CPSubsystemConfig setBaseDir(File baseDir)
```
    Sets the base directory for persisting CP data. Can be an absolute or relative path to the node startup directory.
    
    Parameters:
    
    baseDir - base directory
    
    Returns:
    
    this config instance
  - getDataLoadTimeoutSeconds
```
public int getDataLoadTimeoutSeconds()
```
    Returns the timeout duration for CP members to restore their data from stable storage. A CP member fails its startup if it cannot complete its CP data restore process before this timeout duration.
    
    Returns:
    
    the timeout duration for CP members to restore their data from stable storage
  - setDataLoadTimeoutSeconds
```
public CPSubsystemConfig setDataLoadTimeoutSeconds(int dataLoadTimeoutSeconds)
```
    Sets the timeout duration for CP members to restore their data from stable storage. A CP member fails its startup if it cannot complete its CP data restore process before this timeout duration.
    
    Parameters:
    
    dataLoadTimeoutSeconds - the timeout duration for CP members to restore their data from stable storage
    
    Returns:
    
    this config instance
  - getRaftAlgorithmConfig
```
public RaftAlgorithmConfig getRaftAlgorithmConfig()
```
    Returns configuration options for Hazelcast's Raft consensus algorithm implementation
    
    Returns:
    
    configuration options for Hazelcast's Raft consensus algorithm implementation
  - setRaftAlgorithmConfig
```
public CPSubsystemConfig setRaftAlgorithmConfig(RaftAlgorithmConfig raftAlgorithmConfig)
```
    Sets configuration options for Hazelcast's Raft consensus algorithm implementation
    
    Returns:
    
    this config instance
  - getSemaphoreConfigs
```
public Map<String,SemaphoreConfig> getSemaphoreConfigs()
```
    Returns the map of CP ISemaphore configurations
    
    Returns:
    
    the map of CP ISemaphore configurations
  - findSemaphoreConfig
```
public SemaphoreConfig findSemaphoreConfig(String name)
```
    Returns the CP ISemaphore configuration for the given name.
    The name is matched by stripping the CPGroup name from the given name if present. Returns null if there is no config found by the given name
    
    Parameters:
    
    name - name of the CP ISemaphore
    
    Returns:
    
    the CP ISemaphore configuration
  - addSemaphoreConfig
```
public CPSubsystemConfig addSemaphoreConfig(SemaphoreConfig semaphoreConfig)
```
    Adds the CP ISemaphore configuration. Name of the CP ISemaphore could optionally contain a CPGroup name, like "mySemaphore@group1".
    
    Parameters:
    
    semaphoreConfig - the CP ISemaphore configuration
    
    Returns:
    
    this config instance
  - setSemaphoreConfigs
```
public CPSubsystemConfig setSemaphoreConfigs(Map<String,SemaphoreConfig> semaphoreConfigs)
```
    Sets the map of CP ISemaphore configurations, mapped by config name. Names could optionally contain a CPGroup name, such as "mySemaphore@group1".
    
    Parameters:
    
    semaphoreConfigs - the CP ISemaphore config map to set
    
    Returns:
    
    this config instance
  - getLockConfigs
```
public Map<String,FencedLockConfig> getLockConfigs()
```
    Returns the map of FencedLock configurations
    
    Returns:
    
    the map of FencedLock configurations
  - findLockConfig
```
public FencedLockConfig findLockConfig(String name)
```
    Returns the FencedLock configuration for the given name.
    The name is matched by stripping the CPGroup name from the given name if present. Returns null if there is no config found by the given name
    
    Parameters:
    
    name - name of the FencedLock
    
    Returns:
    
    the FencedLock configuration
  - addLockConfig
```
public CPSubsystemConfig addLockConfig(FencedLockConfig lockConfig)
```
    Adds the FencedLock configuration. Name of the FencedLock could optionally contain a CPGroup name, like "myLock@group1".
    
    Parameters:
    
    lockConfig - the FencedLock configuration
    
    Returns:
    
    this config instance
  - setLockConfigs
```
public CPSubsystemConfig setLockConfigs(Map<String,FencedLockConfig> lockConfigs)
```
    Sets the map of FencedLock configurations, mapped by config name. Names could optionally contain a CPGroup name, such as "myLock@group1".
    
    Parameters:
    
    lockConfigs - the FencedLock config map to set
    
    Returns:
    
    this config instance
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object

Class CPSubsystemConfig

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

DEFAULT_SESSION_TTL_SECONDS

DEFAULT_HEARTBEAT_INTERVAL_SECONDS

MIN_GROUP_SIZE

MAX_GROUP_SIZE

DEFAULT_MISSING_CP_MEMBER_AUTO_REMOVAL_SECONDS

CP_BASE_DIR_DEFAULT

DEFAULT_DATA_LOAD_TIMEOUT_SECONDS

Constructor Detail

CPSubsystemConfig

CPSubsystemConfig

Method Detail

getCPMemberCount

setCPMemberCount

getGroupSize

setGroupSize

getSessionTimeToLiveSeconds

setSessionTimeToLiveSeconds

getSessionHeartbeatIntervalSeconds

setSessionHeartbeatIntervalSeconds

getMissingCPMemberAutoRemovalSeconds

setMissingCPMemberAutoRemovalSeconds

isFailOnIndeterminateOperationState

setFailOnIndeterminateOperationState

isPersistenceEnabled

setPersistenceEnabled

getBaseDir

setBaseDir

getDataLoadTimeoutSeconds

setDataLoadTimeoutSeconds

getRaftAlgorithmConfig

setRaftAlgorithmConfig

getSemaphoreConfigs

findSemaphoreConfig

addSemaphoreConfig

setSemaphoreConfigs

getLockConfigs

findLockConfig

addLockConfig

setLockConfigs

toString

equals

hashCode