org.springframework.boot.loader.tools

Class Packager

java.lang.Object

org.springframework.boot.loader.tools.Packager

Direct Known Subclasses:

ImagePackager, Repackager

public abstract class Packager
extends Object

Abstract base class for packagers.

Since:

2.3.0

Author:

Phillip Webb, Andy Wilkinson, Stephane Nicoll, Madhura Bhave

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Packager.MainClassTimeoutWarningListener Callback interface used to present a warning when finding the main class takes too long.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Packager(File source, LayoutFactory layoutFactory) Create a new Packager instance.

Method Summary

Modifier and Type	Method and Description
void	addMainClassTimeoutWarningListener(Packager.MainClassTimeoutWarningListener listener) Add a listener that will be triggered to display a warning if searching for the main class takes too long.
protected String	findMainMethod(JarFile source)
File	getBackupFile() Return the File to use to backup the original source.
protected Layout	getLayout()
protected File	getSource()
protected boolean	isAlreadyPackaged()
protected boolean	isAlreadyPackaged(File file)
void	setIncludeRelevantJarModeJars(boolean includeRelevantJarModeJars) Sets if jarmode jars relevant for the packaging should be automatcially included.
void	setLayers(Layers layers) Sets the layers that should be used in the jar.
void	setLayout(Layout layout) Sets the layout to use for the jar.
void	setLayoutFactory(LayoutFactory layoutFactory) Sets the layout factory for the jar.
void	setMainClass(String mainClass) Sets the main class that should be run.
protected void	write(JarFile sourceJar, Libraries libraries, AbstractJarWriter writer)

Methods inherited from class java.lang.Object

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

Constructor Detail

Packager

protected Packager(File source,
                   LayoutFactory layoutFactory)

Create a new Packager instance.

Parameters:

source - the source JAR file to package

layoutFactory - the layout factory to use or null

Method Detail

addMainClassTimeoutWarningListener

public void addMainClassTimeoutWarningListener(Packager.MainClassTimeoutWarningListener listener)

Add a listener that will be triggered to display a warning if searching for the main class takes too long.

Parameters:

listener - the listener to add

setMainClass

public void setMainClass(String mainClass)

Sets the main class that should be run. If not specified the value from the MANIFEST will be used, or if no manifest entry is found the archive will be searched for a suitable class.

Parameters:

mainClass - the main class name

setLayout

public void setLayout(Layout layout)

Sets the layout to use for the jar. Defaults to Layouts.forFile(File).

Parameters:

layout - the layout

setLayoutFactory

public void setLayoutFactory(LayoutFactory layoutFactory)

Sets the layout factory for the jar. The factory can be used when no specific layout is specified.

Parameters:

layoutFactory - the layout factory to set

setLayers

public void setLayers(Layers layers)

Sets the layers that should be used in the jar.

Parameters:

layers - the jar layers

See Also:

LayeredLayout

setIncludeRelevantJarModeJars

public void setIncludeRelevantJarModeJars(boolean includeRelevantJarModeJars)

Sets if jarmode jars relevant for the packaging should be automatcially included.

Parameters:

includeRelevantJarModeJars - if relevant jars are included

isAlreadyPackaged

protected final boolean isAlreadyPackaged()
                                   throws IOException

Throws:

IOException

isAlreadyPackaged

protected final boolean isAlreadyPackaged(File file)
                                   throws IOException

Throws:

IOException

write

protected final void write(JarFile sourceJar,
                           Libraries libraries,
                           AbstractJarWriter writer)
                    throws IOException

Throws:

IOException

findMainMethod

protected String findMainMethod(JarFile source)
                         throws IOException

Throws:

IOException

getBackupFile

public final File getBackupFile()

Return the File to use to backup the original source.

Returns:

the file to use to backup the original source

getSource

protected final File getSource()

getLayout

protected final Layout getLayout()