DiscoveryDataClusterState (Ignite 2.10.0)

java.lang.Object
- org.apache.ignite.internal.processors.cluster.DiscoveryDataClusterState

All Implemented Interfaces:

Serializable
```
public class DiscoveryDataClusterState
extends Object
implements Serializable
```
A pojo-object representing current cluster global state. The state includes cluster active flag and cluster baseline topology.
This object also captures a transitional cluster state, when one or more fields are changing. In this case, a transitionReqId field is set to a non-null value and previousBaselineTopology captures previous cluster state. A joining node catching the cluster in an intermediate state will observe transitionReqId field to be non-null, however the previousBaselineTopology will not be sent to the joining node. TODO https://issues.apache.org/jira/browse/IGNITE-7640 This class must be immutable, transitionRes must be set by calling finish().

See Also:

Serialized Form

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`boolean`	`active()` Deprecated. Use `state()` instead.
`boolean`	`baselineChanged()`
`@Nullable BaselineTopology`	`baselineTopology()`
`DiscoveryDataClusterState`	`finish(boolean success)` Creates a non-transitional cluster state.
`boolean`	`hasBaselineTopology()`
`ClusterState`	`lastState()`
`long`	`lastStateChangeTime()`
`boolean`	`localBaselineAutoAdjustment()`
`void`	`localBaselineAutoAdjustment(boolean adjusted)` Set local baseline autoadjustment flag.
`@Nullable BaselineTopology`	`previousBaselineTopology()`
`boolean`	`previouslyActive()`
`void`	`setTransitionResult(UUID reqId, ClusterState state)` Discovery cluster state is changed asynchronously by discovery message, this methods changes local status for public API calls.
`ClusterState`	`state()`
`String`	`toString()`
`boolean`	`transition()`
`@Nullable Exception`	`transitionError()`
`void`	`transitionError(Exception ex)`
`Set<UUID>`	`transitionNodes()`
`UUID`	`transitionRequestId()`
`@Nullable ClusterState`	`transitionResult()`
`AffinityTopologyVersion`	`transitionTopologyVersion()`

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

- Method Detail
  - lastState
```
public ClusterState lastState()
```
    Returns:
    
    Cluster state before transition if cluster in transition and current cluster state otherwise.
  - transitionResult
```
@Nullable
public @Nullable ClusterState transitionResult()
```
    Returns:
    
    Local flag for state transition result (global state is updated asynchronously by custom message).
  - setTransitionResult
```
public void setTransitionResult(UUID reqId,
                                ClusterState state)
```
    Discovery cluster state is changed asynchronously by discovery message, this methods changes local status for public API calls.
    
    Parameters:
    
    reqId - Request ID.
    
    state - New cluster state.
  - transitionRequestId
```
public UUID transitionRequestId()
```
    Returns:
    
    State change request ID.
  - transition
```
public boolean transition()
```
    Returns:
    
    True if any cluster state change is in progress (e.g. active state change, baseline change).
  - previouslyActive
```
public boolean previouslyActive()
```
    Returns:
    
    Previous "active" flag value during transition.
  - transitionTopologyVersion
```
public AffinityTopologyVersion transitionTopologyVersion()
```
    Returns:
    
    State change exchange version.
  - active
```
@Deprecated
public boolean active()
```
    Deprecated. Use state() instead.
    
    Returns:
    
    Current cluster state (or new state in case when transition is in progress).
  - state
```
public ClusterState state()
```
    Returns:
    
    Current cluster state (or new state in case when transition is in progress).
  - lastStateChangeTime
```
public long lastStateChangeTime()
```
    Returns:
    
    Time of last cluster state change.
  - baselineTopology
```
@Nullable
public @Nullable BaselineTopology baselineTopology()
```
    Returns:
    
    Baseline topology.
  - previousBaselineTopology
```
@Nullable
public @Nullable BaselineTopology previousBaselineTopology()
```
    Returns:
    
    Previous Baseline topology.
  - baselineChanged
```
public boolean baselineChanged()
```
    Returns:
    
    True If baseLine changed, False if not.
  - hasBaselineTopology
```
public boolean hasBaselineTopology()
```
    Returns:
    
    True if baseline topology is set in the cluster. False otherwise.
  - transitionNodes
```
public Set<UUID> transitionNodes()
```
    Returns:
    
    Nodes participating in state change exchange.
  - transitionError
```
@Nullable
public @Nullable Exception transitionError()
```
    Returns:
    
    Transition error.
  - transitionError
```
public void transitionError(Exception ex)
```
    Parameters:
    
    ex - Exception
  - localBaselineAutoAdjustment
```
public boolean localBaselineAutoAdjustment()
```
    Returns:
    
    true if current state was created as a result of local baseline autoadjustment with zero timeout on in-memory cluster.
  - localBaselineAutoAdjustment
```
public void localBaselineAutoAdjustment(boolean adjusted)
```
    Set local baseline autoadjustment flag.
    
    Parameters:
    
    adjusted - Flag value.
    
    See Also:
    
    localBaselineAutoAdjustment()
  - finish
```
public DiscoveryDataClusterState finish(boolean success)
```
    Creates a non-transitional cluster state. This method effectively cleans all fields identifying the state as transitional and creates a new state with the state transition result.
    
    Parameters:
    
    success - Transition success status.
    
    Returns:
    
    Cluster state that finished transition.
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object

Class DiscoveryDataClusterState

Method Summary

Methods inherited from class java.lang.Object

Method Detail

lastState

transitionResult

setTransitionResult

transitionRequestId

transition

previouslyActive

transitionTopologyVersion

active

state

lastStateChangeTime

baselineTopology

previousBaselineTopology

baselineChanged

hasBaselineTopology

transitionNodes

transitionError

transitionError

localBaselineAutoAdjustment

localBaselineAutoAdjustment

finish

toString