CascadingStats (Cascading 4.0.0-wip-70)

java.lang.Object
- cascading.stats.CascadingStats<Child>

All Implemented Interfaces:

ProvidesCounters, java.io.Serializable

Direct Known Subclasses:

CascadeStats, FlowNodeStats, FlowStats, FlowStepStats
```
public abstract class CascadingStats<Child>
extends java.lang.Object
implements ProvidesCounters, java.io.Serializable
```
Class CascadingStats is the base class for all Cascading statistics gathering. It also reports the status of core elements that have state.
There are eight states the stats object reports; PENDING, SKIPPED, STARTED, SUBMITTED, RUNNING, SUCCESSFUL, STOPPED, and FAILED.
- pending - when the Flow or Cascade has yet to start.
- skipped - when the Flow was skipped by the parent Cascade.
- started - when Flow.start() was called.
- submitted - when the Step was submitted to the underlying platform for work.
- running - when the Flow or Cascade is executing a workload.
- stopped - when the user calls Flow.stop() on the Flow or Cascade.
- failed - when the Flow or Cascade threw an error and failed to finish the workload.
- successful - when the Flow or Cascade naturally completed its workload without failure.
CascadingStats also reports four unique timestamps.
- startTime - when the start() method was called.
- submitTime - when the unit of work was actually submitted for execution. Not supported by all sub-classes.
- runTime - when the unit of work actually began to execute work. This value may be affected by any "polling interval" in place.
- finishedTime - when all work has completed successfully, failed, or stopped.
A unit of work is considered finished when the Flow or Cascade is no longer processing a workload and successful, skipped, failed, or stopped is true.
It is important to note all the timestamps are client side observations. Not values reported by the underlying platform. That said, the transitions are seen by polling the client interface to the underlying platform so are effected by the FlowProps.getJobPollingInterval() value.
See Also:

CascadeStats, FlowStats, FlowStepStats, Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static class CascadingStats.Status

static class CascadingStats.Type

Nested Classes
Modifier and Type	Class and Description
`static class`	`CascadingStats.Status`
`static class`	`CascadingStats.Type`

Field Summary

Fields
Modifier and Type	Field and Description
`protected ClientState`	`clientState`
`protected long`	`finishedTime` Field finishedTime
`protected java.util.concurrent.atomic.AtomicLong`	`lastCaptureDetail`
`protected java.util.Set<StatsListener>`	`listeners`
`protected java.lang.String`	`name` Field name
`protected long`	`pendingTime` Field pendingTime
`protected long`	`runTime` Field runTime
`protected long`	`startTime` Field startTime
`static java.lang.String`	`STATS_COMPLETE_CHILD_DETAILS_BLOCK_DURATION`
`static java.lang.String`	`STATS_STORE_INTERVAL`
`protected CascadingStats.Status`	`status` Field status
`protected long`	`submitTime` Field submitTime
`protected java.lang.Throwable`	`throwable` Field throwable
`protected java.lang.String[]`	`throwableTrace` Field throwableTrace

Constructor Summary

Constructors
Modifier Constructor and Description

protected CascadingStats(java.lang.String name, ClientState clientState)

Constructors
Modifier	Constructor and Description
`protected`	`CascadingStats(java.lang.String name, ClientState clientState)`

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addListener(StatsListener statsListener)`
`void`	`captureDetail()` Method captureDetail will recursively capture details about nested systems.
`abstract void`	`captureDetail(CascadingStats.Type depth)`
`void`	`cleanup()` Method cleanup destroys any resources allocated by this instance.
`protected void`	`fireListeners(CascadingStats.Status fromStatus, CascadingStats.Status toStatus)`
`abstract java.util.Collection<Child>`	`getChildren()` Method getChildren returns any relevant child statistics instances.
`abstract Child`	`getChildWith(java.lang.String id)` Method getChildWith returns a child stats instance with the given ID value.
`abstract java.util.Collection<java.lang.String>`	`getCounterGroupsMatching(java.lang.String regex)` Method getCounterGroupsMatching returns all the available counter group names that match the given regular expression.
`java.util.Collection<java.lang.String>`	`getCountersFor(java.lang.Class<? extends java.lang.Enum> group)` Method getCountersFor returns all the counter names for the counter Enum.
`long`	`getCurrentDuration()` Method getCurrentDuration returns the current duration of the current work whether or not the work is finished.
`long`	`getDuration()` Method getDuration returns the duration the work executed before being finished.
`long`	`getFinishedTime()` Method getFinishedTime returns the finishedTime of this CascadingStats object.
`abstract java.lang.String`	`getID()` Method getID returns the ID of this CascadingStats object.
`java.lang.String`	`getName()` Method getName returns the name of this CascadingStats object.
`long`	`getPendingTime()` Method getPendingTime returns the pendingTime of this CascadingStats object.
`protected java.lang.String`	`getPrefix()`
`protected abstract ProcessLogger`	`getProcessLogger()`
`long`	`getRunTime()` Method getRunTime returns the runTime of this CascadingStats object.
`long`	`getStartTime()` Method getStartTime returns the startTime of this CascadingStats object.
`protected java.lang.String`	`getStatsString()`
`CascadingStats.Status`	`getStatus()` Method getStatus returns the `CascadingStats.Status` of this CascadingStats object.
`long`	`getSubmitTime()` Method getSubmitTime returns the submitTime of this CascadingStats object.
`java.lang.Throwable`	`getThrowable()` Method getThrowable returns the throwable of this CascadingStats object.
`java.lang.String[]`	`getThrowableTrace()` Method getThrowableTrace returns the throwableTrace of this CascadingStats object.
`abstract CascadingStats.Type`	`getType()`
`protected boolean`	`isDetailStale()` For rate limiting access to the backend.
`boolean`	`isEngaged()` Method isEngaged returns true when there is work being executed, if `isStarted()`, `isSubmitted()`, or `isRunning()` returns true;
`boolean`	`isFailed()` Method isFailed returns true when the work ended with an error.
`boolean`	`isFinished()` Method isFinished returns true if the current status shows no work currently being executed, if `isSkipped()`, `isSuccessful()`, `isFailed()`, or `isStopped()` returns true.
`boolean`	`isPending()` Method isPending returns true if no work has been submitted.
`boolean`	`isRunning()` Method isRunning returns true when work has begun.
`boolean`	`isSkipped()` Method isSkipped returns true when the works was skipped.
`boolean`	`isStarted()` Method isStarted returns true when work has started.
`boolean`	`isStopped()` Method isStopped returns true when the user stopped the work.
`boolean`	`isSubmitted()` Method isSubmitted returns true if no work has started.
`boolean`	`isSuccessful()` Method isSuccessful returns true when work has completed successfully.
`protected void`	`logDebug(java.lang.String message, java.lang.Object... arguments)`
`protected void`	`logError(java.lang.String message, java.lang.Object... arguments)`
`protected void`	`logError(java.lang.String message, java.lang.Throwable throwable)`
`protected void`	`logInfo(java.lang.String message, java.lang.Object... arguments)`
`protected void`	`logWarn(java.lang.String message, java.lang.Object... arguments)`
`protected void`	`markDetailCaptured()`
`void`	`markFailed()` Method markFailed sets the status to `CascadingStats.Status.FAILED`.
`void`	`markFailed(java.lang.String[] throwableTrace)` Method markFailed sets the status to `CascadingStats.Status.FAILED`.
`void`	`markFailed(java.lang.Throwable throwable)` Method markFailed sets the status to `CascadingStats.Status.FAILED`.
`protected void`	`markFailed(java.lang.Throwable throwable, java.lang.String[] throwableTrace)`
`protected void`	`markFinishedTime()`
`void`	`markPending()` Method markPending sets the status to `CascadingStats.Status.PENDING`.
`protected void`	`markPendingTime()`
`void`	`markRunning()` Method markRunning sets the status to `CascadingStats.Status.RUNNING`.
`protected void`	`markRunTime()`
`void`	`markSkipped()` Method markSkipped sets the status to `CascadingStats.Status.SKIPPED`.
`void`	`markStarted()` Method markStarted sets the status to `CascadingStats.Status.STARTED`.
`void`	`markStartedThenRunning()` Method markStartedThenRunning consecutively marks the status as `CascadingStats.Status.STARTED` then `CascadingStats.Status.RUNNING` and forces the start and running time to be equals.
`protected void`	`markStartTime()`
`protected void`	`markStartToRunTime()`
`void`	`markStopped()` Method markStopped sets the status to `CascadingStats.Status.STOPPED`.
`void`	`markSubmitted()` Method markSubmitted sets the status to `CascadingStats.Status.SUBMITTED`.
`protected void`	`markSubmitTime()`
`void`	`markSuccessful()` Method markSuccessful sets the status to `CascadingStats.Status.SUCCESSFUL`.
`void`	`prepare()` Method prepare initializes this instance.
`abstract void`	`recordInfo()`
`void`	`recordStats()` Method recordStats forces recording of current status information.
`boolean`	`removeListener(StatsListener statsListener)`
`static void`	`setStatsStoreInterval(java.util.Map<java.lang.Object,java.lang.Object> properties, long intervalMs)` Method setStatsStoreInterval sets the interval time between store operations against the underlying document storage services.
`java.lang.String`	`toString()`

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

Methods inherited from interface cascading.stats.ProvidesCounters
getCounterGroups, getCountersFor, getCounterValue, getCounterValue, getLastSuccessfulCounterFetchTime

- Field Detail
  - STATS_STORE_INTERVAL
```
public static final java.lang.String STATS_STORE_INTERVAL
```
    See Also:
    
    Constant Field Values
  - STATS_COMPLETE_CHILD_DETAILS_BLOCK_DURATION
```
public static final java.lang.String STATS_COMPLETE_CHILD_DETAILS_BLOCK_DURATION
```
    See Also:
    
    Constant Field Values
  - name
```
protected final java.lang.String name
```
    Field name
  - clientState
```
protected final ClientState clientState
```
  - status
```
protected CascadingStats.Status status
```
    Field status
  - listeners
```
protected java.util.Set<StatsListener> listeners
```
  - pendingTime
```
protected long pendingTime
```
    Field pendingTime
  - startTime
```
protected long startTime
```
    Field startTime
  - submitTime
```
protected long submitTime
```
    Field submitTime
  - runTime
```
protected long runTime
```
    Field runTime
  - finishedTime
```
protected long finishedTime
```
    Field finishedTime
  - throwable
```
protected java.lang.Throwable throwable
```
    Field throwable
  - throwableTrace
```
protected java.lang.String[] throwableTrace
```
    Field throwableTrace
  - lastCaptureDetail
```
protected java.util.concurrent.atomic.AtomicLong lastCaptureDetail
```
- Constructor Detail
  - CascadingStats
```
protected CascadingStats(java.lang.String name,
                         ClientState clientState)
```
- Method Detail
  - setStatsStoreInterval
```
public static void setStatsStoreInterval(java.util.Map<java.lang.Object,java.lang.Object> properties,
                                         long intervalMs)
```
    Method setStatsStoreInterval sets the interval time between store operations against the underlying document storage services. This affects the rate at which metrics and status information is updated.
    
    Parameters:
    
    properties - of type Properties
    
    intervalMs - milliseconds between storage calls
  - prepare
```
public void prepare()
```
    Method prepare initializes this instance.
  - cleanup
```
public void cleanup()
```
    Method cleanup destroys any resources allocated by this instance.
  - getID
```
public abstract java.lang.String getID()
```
    Method getID returns the ID of this CascadingStats object.
    
    Returns:
    
    the ID (type Object) of this CascadingStats object.
  - getName
```
public java.lang.String getName()
```
    Method getName returns the name of this CascadingStats object.
    
    Returns:
    
    the name (type String) of this CascadingStats object.
  - getType
```
public abstract CascadingStats.Type getType()
```
  - getThrowable
```
public java.lang.Throwable getThrowable()
```
    Method getThrowable returns the throwable of this CascadingStats object.
    
    Returns:
    
    the throwable (type Throwable) of this CascadingStats object.
  - getThrowableTrace
```
public java.lang.String[] getThrowableTrace()
```
    Method getThrowableTrace returns the throwableTrace of this CascadingStats object.
    Will return null if not set.
    
    Returns:
    
    the throwableTrace (type String[]) of this CascadingStats object.
  - isPending
```
public boolean isPending()
```
    Method isPending returns true if no work has been submitted.
    
    Returns:
    
    the pending (type boolean) of this CascadingStats object.
  - isSkipped
```
public boolean isSkipped()
```
    Method isSkipped returns true when the works was skipped.
    Flows are skipped if the appropriate FlowSkipStrategy.skipFlow(Flow) returns true;
    
    Returns:
    
    the skipped (type boolean) of this CascadingStats object.
  - isStarted
```
public boolean isStarted()
```
    Method isStarted returns true when work has started.
    
    Returns:
    
    the started (type boolean) of this CascadingStats object.
  - isSubmitted
```
public boolean isSubmitted()
```
    Method isSubmitted returns true if no work has started.
    
    Returns:
    
    the submitted (type boolean) of this CascadingStats object.
  - isRunning
```
public boolean isRunning()
```
    Method isRunning returns true when work has begun.
    
    Returns:
    
    the running (type boolean) of this CascadingStats object.
  - isEngaged
```
public boolean isEngaged()
```
    Method isEngaged returns true when there is work being executed, if isStarted(), isSubmitted(), or isRunning() returns true;
    
    Returns:
    
    the engaged (type boolean) of this CascadingStats object.
  - isSuccessful
```
public boolean isSuccessful()
```
    Method isSuccessful returns true when work has completed successfully.
    
    Returns:
    
    the completed (type boolean) of this CascadingStats object.
  - isFailed
```
public boolean isFailed()
```
    Method isFailed returns true when the work ended with an error.
    
    Returns:
    
    the failed (type boolean) of this CascadingStats object.
  - isStopped
```
public boolean isStopped()
```
    Method isStopped returns true when the user stopped the work.
    
    Returns:
    
    the stopped (type boolean) of this CascadingStats object.
  - isFinished
```
public boolean isFinished()
```
    Method isFinished returns true if the current status shows no work currently being executed, if isSkipped(), isSuccessful(), isFailed(), or isStopped() returns true.
    
    Returns:
    
    the finished (type boolean) of this CascadingStats object.
  - getStatus
```
public CascadingStats.Status getStatus()
```
    Method getStatus returns the CascadingStats.Status of this CascadingStats object.
    
    Returns:
    
    the status (type Status) of this CascadingStats object.
  - recordStats
```
public void recordStats()
```
    Method recordStats forces recording of current status information.
  - recordInfo
```
public abstract void recordInfo()
```
  - markPending
```
public void markPending()
```
    Method markPending sets the status to CascadingStats.Status.PENDING.
  - markPendingTime
```
protected void markPendingTime()
```
  - markStartedThenRunning
```
public void markStartedThenRunning()
```
    Method markStartedThenRunning consecutively marks the status as CascadingStats.Status.STARTED then CascadingStats.Status.RUNNING and forces the start and running time to be equals.
  - markStartToRunTime
```
protected void markStartToRunTime()
```
  - markStarted
```
public void markStarted()
```
    Method markStarted sets the status to CascadingStats.Status.STARTED.
  - markStartTime
```
protected void markStartTime()
```
  - markSubmitted
```
public void markSubmitted()
```
    Method markSubmitted sets the status to CascadingStats.Status.SUBMITTED.
  - markSubmitTime
```
protected void markSubmitTime()
```
  - markRunning
```
public void markRunning()
```
    Method markRunning sets the status to CascadingStats.Status.RUNNING.
  - markRunTime
```
protected void markRunTime()
```
  - markSuccessful
```
public void markSuccessful()
```
    Method markSuccessful sets the status to CascadingStats.Status.SUCCESSFUL.
  - markFinishedTime
```
protected void markFinishedTime()
```
  - markFailed
```
public void markFailed()
```
    Method markFailed sets the status to CascadingStats.Status.FAILED.
  - markFailed
```
public void markFailed(java.lang.Throwable throwable)
```
    Method markFailed sets the status to CascadingStats.Status.FAILED.
    
    Parameters:
    
    throwable - of type Throwable
  - markFailed
```
public void markFailed(java.lang.String[] throwableTrace)
```
    Method markFailed sets the status to CascadingStats.Status.FAILED.
    
    Parameters:
    
    throwableTrace - of type String[]
  - markFailed
```
protected void markFailed(java.lang.Throwable throwable,
                          java.lang.String[] throwableTrace)
```
  - markStopped
```
public void markStopped()
```
    Method markStopped sets the status to CascadingStats.Status.STOPPED.
  - markSkipped
```
public void markSkipped()
```
    Method markSkipped sets the status to CascadingStats.Status.SKIPPED.
  - getPendingTime
```
public long getPendingTime()
```
    Method getPendingTime returns the pendingTime of this CascadingStats object.
    
    Returns:
    
    the pendingTime (type long) of this CascadingStats object.
  - getStartTime
```
public long getStartTime()
```
    Method getStartTime returns the startTime of this CascadingStats object.
    
    Returns:
    
    the startTime (type long) of this CascadingStats object.
  - getSubmitTime
```
public long getSubmitTime()
```
    Method getSubmitTime returns the submitTime of this CascadingStats object.
    
    Returns:
    
    the submitTime (type long) of this CascadingStats object.
  - getRunTime
```
public long getRunTime()
```
    Method getRunTime returns the runTime of this CascadingStats object.
    
    Returns:
    
    the runTime (type long) of this CascadingStats object.
  - getFinishedTime
```
public long getFinishedTime()
```
    Method getFinishedTime returns the finishedTime of this CascadingStats object.
    
    Returns:
    
    the finishedTime (type long) of this CascadingStats object.
  - getDuration
```
public long getDuration()
```
    Method getDuration returns the duration the work executed before being finished.
    This method will return zero until the work is finished. See getCurrentDuration() if you wish to poll for the current duration value.
    Duration is calculated as finishedTime - startTime.
    
    Returns:
    
    the duration (type long) of this CascadingStats object.
  - getCurrentDuration
```
public long getCurrentDuration()
```
    Method getCurrentDuration returns the current duration of the current work whether or not the work is finished. When finished, the return value will be the same as getDuration().
    Duration is calculated as finishedTime - startTime.
    
    Returns:
    
    the currentDuration (type long) of this CascadingStats object.
  - getCountersFor
```
public java.util.Collection<java.lang.String> getCountersFor(java.lang.Class<? extends java.lang.Enum> group)
```
    Description copied from interface: ProvidesCounters
    
    Method getCountersFor returns all the counter names for the counter Enum.
    
    Specified by:
    
    getCountersFor in interface ProvidesCounters
    
    Returns:
    
    Collection
  - getCounterGroupsMatching
```
public abstract java.util.Collection<java.lang.String> getCounterGroupsMatching(java.lang.String regex)
```
    Method getCounterGroupsMatching returns all the available counter group names that match the given regular expression.
    
    Parameters:
    
    regex - of type String
    
    Returns:
    
    Collection
  - captureDetail
```
public void captureDetail()
```
    Method captureDetail will recursively capture details about nested systems. Use this method to persist statistics about a given Cascade, Flow, FlowStep, or FlowNode.
    Each CascadingStats object must be individually inspected for any system specific details.
    Each call to this method will refresh the internal cache unless the current Stats object is marked finished. One additional refresh will happen after this instance is marked finished.
  - captureDetail
```
public abstract void captureDetail(CascadingStats.Type depth)
```
  - isDetailStale
```
protected boolean isDetailStale()
```
    For rate limiting access to the backend.
    Currently used at the Step and below.
  - markDetailCaptured
```
protected void markDetailCaptured()
```
  - getChildren
```
public abstract java.util.Collection<Child> getChildren()
```
    Method getChildren returns any relevant child statistics instances. They may not be of type CascadingStats, but instead platform specific.
    
    Returns:
    
    a Collection of child statistics
  - getChildWith
```
public abstract Child getChildWith(java.lang.String id)
```
    Method getChildWith returns a child stats instance with the given ID value.
    
    Parameters:
    
    id - the id of a child instance
    
    Returns:
    
    the child stats instance or null if not found
  - addListener
```
public void addListener(StatsListener statsListener)
```
  - removeListener
```
public boolean removeListener(StatsListener statsListener)
```
  - fireListeners
```
protected void fireListeners(CascadingStats.Status fromStatus,
                             CascadingStats.Status toStatus)
```
  - getProcessLogger
```
protected abstract ProcessLogger getProcessLogger()
```
  - getStatsString
```
protected java.lang.String getStatsString()
```
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - logInfo
```
protected void logInfo(java.lang.String message,
                       java.lang.Object... arguments)
```
  - logDebug
```
protected void logDebug(java.lang.String message,
                        java.lang.Object... arguments)
```
  - logWarn
```
protected void logWarn(java.lang.String message,
                       java.lang.Object... arguments)
```
  - logError
```
protected void logError(java.lang.String message,
                        java.lang.Object... arguments)
```
  - logError
```
protected void logError(java.lang.String message,
                        java.lang.Throwable throwable)
```
  - getPrefix
```
protected java.lang.String getPrefix()
```

Class CascadingStats<Child>

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface cascading.stats.ProvidesCounters

Field Detail

STATS_STORE_INTERVAL

STATS_COMPLETE_CHILD_DETAILS_BLOCK_DURATION

name

clientState

status

listeners

pendingTime

startTime

submitTime

runTime

finishedTime

throwable

throwableTrace

lastCaptureDetail

Constructor Detail

CascadingStats

Method Detail

setStatsStoreInterval

prepare

cleanup

getID

getName

getType

getThrowable

getThrowableTrace

isPending

isSkipped

isStarted

isSubmitted

isRunning

isEngaged

isSuccessful

isFailed

isStopped

isFinished

getStatus

recordStats

recordInfo

markPending

markPendingTime

markStartedThenRunning

markStartToRunTime

markStarted

markStartTime

markSubmitted

markSubmitTime

markRunning

markRunTime

markSuccessful

markFinishedTime

markFailed

markFailed

markFailed

markFailed

markStopped

markSkipped

getPendingTime

getStartTime

getSubmitTime

getRunTime

getFinishedTime

getDuration

getCurrentDuration

getCountersFor

getCounterGroupsMatching

captureDetail

captureDetail

isDetailStale

markDetailCaptured

getChildren

getChildWith

addListener