MonitorImpl (Mondrian OLAP Engine, version 3.11.0.1-356)

java.lang.Object
- mondrian.server.MonitorImpl

All Implemented Interfaces:

Monitor, MonitorMXBean
```
class MonitorImpl
extends Object
implements Monitor, MonitorMXBean
```
Process that reads from the monitor stream and updates counters.
Internally, uses a dedicated thread to process events. Events received from log4j are placed on a queue. This "Active object" or "Actor" pattern means that the data structures that hold counters do not need to be locked.
Command requests are treated like events. They place their result on a result queue.

A visitor quickly dispatches events and commands to the appropriate handler method.

The monitored objects form a hierarchy. For each object type, there is a mutable workspace (whose members are private and non-final) that is converted into a monitor object (whose members are public and final) when its fix() method is called:
- MonitorImpl.MutableServerInfo → ServerInfo

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`(package private) static class`	`MonitorImpl.Command`	A kind of message that produces a response.
`(package private) static interface`	`MonitorImpl.CommandVisitor<T>`	Extension to `Visitor` to allow commands as well as events.
`(package private) static class`	`MonitorImpl.ConnectionsCommand`
`(package private) static class`	`MonitorImpl.ServerCommand`
`(package private) static class`	`MonitorImpl.ShutdownCommand`
`(package private) static class`	`MonitorImpl.SqlStatementsCommand`
`(package private) static class`	`MonitorImpl.StatementsCommand`

Field Summary

Fields
Modifier and Type Field Description

protected static Util.MemoryInfo MEMORY_INFO

Constructor Summary

Constructors
Constructor Description

MonitorImpl()
Creates a Monitor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`List<ConnectionInfo>`	`getConnections()`
`ServerInfo`	`getServer()`
`List<SqlStatementInfo>`	`getSqlStatements()`
`List<StatementInfo>`	`getStatements()`
`void`	`sendEvent(Event event)`	Sends an event to the monitor.
`void`	`shutdown()`

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

- Field Detail
  - MEMORY_INFO
```
protected static final Util.MemoryInfo MEMORY_INFO
```
- Constructor Detail
  - MonitorImpl
```
public MonitorImpl()
```
    Creates a Monitor.
- Method Detail
  - shutdown
```
public void shutdown()
```
  - sendEvent
```
public void sendEvent(Event event)
```
    Description copied from interface: Monitor
    
    Sends an event to the monitor.
    
    Specified by:
    
    sendEvent in interface Monitor
    
    Parameters:
    
    event - Event
  - getServer
```
public ServerInfo getServer()
```
    Specified by:
    
    getServer in interface Monitor
    
    Specified by:
    
    getServer in interface MonitorMXBean
  - getConnections
```
public List<ConnectionInfo> getConnections()
```
    Specified by:
    
    getConnections in interface Monitor
    
    Specified by:
    
    getConnections in interface MonitorMXBean
  - getStatements
```
public List<StatementInfo> getStatements()
```
    Specified by:
    
    getStatements in interface Monitor
    
    Specified by:
    
    getStatements in interface MonitorMXBean
  - getSqlStatements
```
public List<SqlStatementInfo> getSqlStatements()
```
    Specified by:
    
    getSqlStatements in interface Monitor
    
    Specified by:
    
    getSqlStatements in interface MonitorMXBean