Package org.apache.nifi.bootstrap.command.process

Class VirtualMachineProcessHandleProvider

java.lang.Object

org.apache.nifi.bootstrap.command.process.VirtualMachineProcessHandleProvider

All Implemented Interfaces:

ProcessHandleProvider

public class VirtualMachineProcessHandleProvider
extends Object
implements ProcessHandleProvider

Virtual Machine implementation of ProcessHandle Provider using the Attach API with System Properties

Field Summary

Fields

Modifier and Type	Field	Description
private final ConfigurationProvider	configurationProvider
private static final org.slf4j.Logger	logger

Constructor Summary

Constructors

Constructor	Description
VirtualMachineProcessHandleProvider(ConfigurationProvider configurationProvider)

Method Summary

Modifier and Type	Method	Description
Optional<ProcessHandle>	findApplicationProcessHandle()	Find Process Handle for Application based on matching argument for path to application properties
Optional<ProcessHandle>	findBootstrapProcessHandle()	Find Process Handle for Bootstrap based on matching argument for path to bootstrap configuration
private Optional<ProcessHandle>	findProcessHandle(VirtualMachineDescriptor descriptor, SystemProperty systemProperty, Path configuration)
private Optional<ProcessHandle>	findProcessHandle(VirtualMachine virtualMachine, SystemProperty systemProperty, Path configuration)
private Optional<ProcessHandle>	findProcessHandle(SystemProperty systemProperty, Path configuration)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

logger

private static final org.slf4j.Logger logger

configurationProvider

private final ConfigurationProvider configurationProvider

Constructor Details

VirtualMachineProcessHandleProvider

public VirtualMachineProcessHandleProvider(ConfigurationProvider configurationProvider)

Method Details

findApplicationProcessHandle

public Optional<ProcessHandle> findApplicationProcessHandle()

Find Process Handle for Application based on matching argument for path to application properties

Specified by:

findApplicationProcessHandle in interface ProcessHandleProvider

Returns:

Application Process Handle or empty when not found

findBootstrapProcessHandle

public Optional<ProcessHandle> findBootstrapProcessHandle()

Find Process Handle for Bootstrap based on matching argument for path to bootstrap configuration

Specified by:

findBootstrapProcessHandle in interface ProcessHandleProvider

Returns:

Bootstrap Process Handle or empty when not found

findProcessHandle

private Optional<ProcessHandle> findProcessHandle(SystemProperty systemProperty,
 Path configuration)

findProcessHandle

private Optional<ProcessHandle> findProcessHandle(VirtualMachineDescriptor descriptor,
 SystemProperty systemProperty,
 Path configuration)

findProcessHandle

private Optional<ProcessHandle> findProcessHandle(VirtualMachine virtualMachine,
 SystemProperty systemProperty,
 Path configuration)
                                           throws IOException

Throws:

IOException