java.lang.Object
- com.streambase.sb.monitor.Snapshot

```
public class Snapshot
extends Object
```
Stores a snapshot of information from a StreamBase application. Snapshot objects are created by the StreamBaseMonitor class, and consumed by MonitorListeners. New snapshots are produced at regular intervals, depending on the period specified in the StreamBase Server's conf file.

See Also:

StreamBaseMonitor, MonitorListener

Nested Class Summary

Nested Classes
Modifier and Type Class Description

protected static interface Snapshot.Source

protected static class Snapshot.Status

Field Summary

Fields
Modifier and Type	Field	Description
`protected Set<String>`	`containers`
`protected int`	`cycle`
`protected boolean`	`enableOperatorDetails`
`protected boolean`	`gotBegin`
`protected Set<String>`	`lastCycleContainers`
`protected Map<String,ModuleInfo>`	`modInfos`
`protected Map<String,String>`	`operatorTypes`
`protected Map<String,OperatorInfo>`	`opInfos`
`protected Timestamp`	`prev_timestamp`
`protected Iterator<Tuple>`	`resultIterator`
`protected StreamBaseMonitor`	`sbMonitor`
`protected List<com.streambase.sb.monitor.StatTuple>`	`statTuples`
`protected Map<String,StreamInfo>`	`streamInfos`
`protected SystemInfo`	`sysInfo`
`protected Map<String,ThreadInfo>`	`thrInfos`
`static long`	`TICKS_PER_MICROSECOND`
`static long`	`TICKS_PER_MILLISECOND`

Constructor Summary

Constructors
Modifier Constructor Description

protected Snapshot(StreamBaseMonitor sbmon, boolean enableOperatorDetails)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Set<String>`	`containerNames()`	Return a list of the names of the current containers
`int`	`getCycle()`	Returns the cycle number of this snapshot.
`protected static String`	`getModName(String name)`	Given a queue name, retrieve the module name.
`ModuleInfo`	`getModuleInfo(String name)`	Returns information about the specified module.
`OperatorInfo`	`getOperatorInfo(String name)`	Returns information about the specified operator.
`protected String`	`getOperatorType(StreamBaseClient sbClient, String name)`
`StreamInfo`	`getStreamInfo(String name)`	Returns information about the specified stream.
`SystemInfo`	`getSystemInfo()`	The SystemInfo object for this snapshot.
`ThreadInfo`	`getThreadInfo(String name)`	Returns information about the specified thread.
`Timestamp`	`getTimestamp()`	Return the time when this snapshot was taken.
`Iterator<ModuleInfo>`	`moduleInfos()`	Returns an iterator over all the ModuleInfo objects.
`Set<String>`	`moduleNames()`	Returns the set of all thread names.
`Iterator<OperatorInfo>`	`operatorInfos()`	Returns an iterator over all the OperatorInfo objects.
`Set<String>`	`operatorNames()`	Returns the set of all operator names.
`void`	`prettyPrint()`	Shortcut for prettyPrint(true, true, true, false).
`protected void`	`recycle()`
`protected void`	`reset()`	totally reset this snapshot
`Iterator<StreamInfo>`	`streamInfos()`	Returns an iterator over all the StreamInfo objects.
`Set<String>`	`streamNames()`	Returns the set of all stream names.
`void`	`terminate()`	Ask the StreamBaseMonitor to terminate at the end of the current snapshot.
`Iterator<ThreadInfo>`	`threadInfos()`	Returns an iterator over all the ThreadInfo objects.
`Set<String>`	`threadNames()`	Returns the set of all thread names.
`String`	`toString()`	Returns a string representation of the Snapshot object.

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

- Field Detail
  - TICKS_PER_MILLISECOND
```
public static final long TICKS_PER_MILLISECOND
```
    See Also:
    
    Constant Field Values
  - TICKS_PER_MICROSECOND
```
public static final long TICKS_PER_MICROSECOND
```
    See Also:
    
    Constant Field Values
  - cycle
```
protected int cycle
```
  - statTuples
```
protected List<com.streambase.sb.monitor.StatTuple> statTuples
```
  - containers
```
protected Set<String> containers
```
  - operatorTypes
```
protected Map<String,String> operatorTypes
```
  - lastCycleContainers
```
protected Set<String> lastCycleContainers
```
  - opInfos
```
protected Map<String,OperatorInfo> opInfos
```
  - thrInfos
```
protected Map<String,ThreadInfo> thrInfos
```
  - modInfos
```
protected Map<String,ModuleInfo> modInfos
```
  - streamInfos
```
protected Map<String,StreamInfo> streamInfos
```
  - sysInfo
```
protected SystemInfo sysInfo
```
  - sbMonitor
```
protected final StreamBaseMonitor sbMonitor
```
  - enableOperatorDetails
```
protected final boolean enableOperatorDetails
```
  - prev_timestamp
```
protected Timestamp prev_timestamp
```
  - gotBegin
```
protected boolean gotBegin
```
  - resultIterator
```
protected Iterator<Tuple> resultIterator
```
- Constructor Detail
  - Snapshot
```
protected Snapshot(StreamBaseMonitor sbmon,
                   boolean enableOperatorDetails)
```
- Method Detail
  - terminate
```
public void terminate()
```
    Ask the StreamBaseMonitor to terminate at the end of the current snapshot.
    
    See Also:
    
    StreamBaseMonitor.terminate()
  - getModName
```
protected static final String getModName(String name)
```
    Given a queue name, retrieve the module name.
    
    Parameters:
    
    name - queue name
    
    Returns:
    
    module name
  - getOperatorType
```
protected String getOperatorType(StreamBaseClient sbClient,
                                 String name)
                          throws StreamBaseException
```
    Throws:
    
    StreamBaseException
  - containerNames
```
public Set<String> containerNames()
```
    Return a list of the names of the current containers
    
    Returns:
    
    list of the names of the current containers
  - getSystemInfo
```
public SystemInfo getSystemInfo()
```
    The SystemInfo object for this snapshot.
    
    Returns:
    
    the SystemInfo object
  - getOperatorInfo
```
public OperatorInfo getOperatorInfo(String name)
```
    Returns information about the specified operator.
    
    Parameters:
    
    name - the operator name
    
    Returns:
    
    the requested OperatorInfo object
  - getThreadInfo
```
public ThreadInfo getThreadInfo(String name)
```
    Returns information about the specified thread.
    
    Parameters:
    
    name - the thread name
    
    Returns:
    
    the requested ThreadInfo object
  - getModuleInfo
```
public ModuleInfo getModuleInfo(String name)
```
    Returns information about the specified module.
    
    Parameters:
    
    name - the module name
    
    Returns:
    
    the requested ModuleInfo object
  - getStreamInfo
```
public StreamInfo getStreamInfo(String name)
```
    Returns information about the specified stream.
    
    Parameters:
    
    name - the stream name
    
    Returns:
    
    the requested StreamInfo object
  - operatorInfos
```
public Iterator<OperatorInfo> operatorInfos()
```
    Returns an iterator over all the OperatorInfo objects.
    
    Returns:
    
    an Iterator of OperatorInfos
    
    See Also:
    
    getOperatorInfo(java.lang.String)
  - operatorNames
```
public Set<String> operatorNames()
```
    Returns the set of all operator names.
    
    Returns:
    
    Set of operator names
    
    See Also:
    
    getOperatorInfo(java.lang.String)
  - threadInfos
```
public Iterator<ThreadInfo> threadInfos()
```
    Returns an iterator over all the ThreadInfo objects.
    
    Returns:
    
    an Iterator of ThreadInfos
    
    See Also:
    
    getThreadInfo(java.lang.String)
  - threadNames
```
public Set<String> threadNames()
```
    Returns the set of all thread names.
    
    Returns:
    
    Set of thread names
    
    See Also:
    
    getThreadInfo(java.lang.String)
  - moduleInfos
```
public Iterator<ModuleInfo> moduleInfos()
```
    Returns an iterator over all the ModuleInfo objects.
    
    Returns:
    
    an Iterator of ModuleInfo
    
    See Also:
    
    getModuleInfo(java.lang.String)
  - moduleNames
```
public Set<String> moduleNames()
```
    Returns the set of all thread names.
    
    Returns:
    
    Set of thread names
    
    See Also:
    
    getThreadInfo(java.lang.String)
  - streamInfos
```
public Iterator<StreamInfo> streamInfos()
```
    Returns an iterator over all the StreamInfo objects.
    
    Returns:
    
    an Iterator of StreamInfo
    
    See Also:
    
    getStreamInfo(java.lang.String)
  - streamNames
```
public Set<String> streamNames()
```
    Returns the set of all stream names.
    
    Returns:
    
    Set of stream names
    
    See Also:
    
    getStreamInfo(java.lang.String)
  - getCycle
```
public int getCycle()
```
    Returns the cycle number of this snapshot. All subsequent snapshots will have an increasing cycle number. This is a monotonically increasing integer generated by the StreamBase daemon.
    
    Returns:
    
    snapshot cycle number
  - getTimestamp
```
public Timestamp getTimestamp()
```
    Return the time when this snapshot was taken. It is the timestamp of the first tuple of this snapshot.
    
    Returns:
    
    timestamp of whhen this snapshot was taken
  - reset
```
protected void reset()
```
    totally reset this snapshot
  - recycle
```
protected void recycle()
```
  - toString
```
public String toString()
```
    Returns a string representation of the Snapshot object.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    
    a string representation of the object.
  - prettyPrint
```
public void prettyPrint()
```
    Shortcut for prettyPrint(true, true, true, false).
    
    See Also:
    
    prettyPrint(boolean,boolean,boolean,boolean)

Modifier and Type	Class	Description
`protected static interface`	`Snapshot.Source`
`protected static class`	`Snapshot.Status`

Class Snapshot

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

TICKS_PER_MILLISECOND

TICKS_PER_MICROSECOND

cycle

statTuples

containers

operatorTypes

lastCycleContainers

opInfos

thrInfos

modInfos

streamInfos

sysInfo

sbMonitor

enableOperatorDetails

prev_timestamp

gotBegin

resultIterator

Constructor Detail

Snapshot

Method Detail

terminate

getModName

getOperatorType

containerNames

getSystemInfo

getOperatorInfo

getThreadInfo

getModuleInfo

getStreamInfo

operatorInfos

operatorNames

threadInfos

threadNames

moduleInfos

moduleNames

streamInfos

streamNames

getCycle

getTimestamp

reset

recycle

toString

prettyPrint