Package io.quarkus.bootstrap.runner

Class AotSerializedApplication

java.lang.Object

io.quarkus.bootstrap.runner.AotSerializedApplication

public class AotSerializedApplication
extends Object

Serialization and deserialization of cached resources for AOT-optimized jar packaging. This class handles the serialization of frequently-accessed resources (like service loader files) to avoid classpath scanning at runtime, while maintaining compatibility with standard Java classloaders for optimal AOT performance. The format is versioned and includes a magic number for validation.

Constructor Summary

Constructors

Constructor	Description
AotSerializedApplication(AotRunnerClassLoader runnerClassLoader, String mainClass)

Method Summary

Modifier and Type	Method	Description
String	getMainClass()
AotRunnerClassLoader	getRunnerClassLoader()
static AotSerializedApplication	read(InputStream in)	Reads cached resources from an input stream.
static void	write(OutputStream out, String mainClass, List<Path> classPath)	Writes cached resources to an output stream in a binary format.

Methods inherited from class java.lang.Object

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

Constructor Details

AotSerializedApplication

public AotSerializedApplication(AotRunnerClassLoader runnerClassLoader,
 String mainClass)

Method Details

getMainClass

public String getMainClass()

getRunnerClassLoader

public AotRunnerClassLoader getRunnerClassLoader()

write

public static void write(OutputStream out,
 String mainClass,
 List<Path> classPath)
                  throws IOException

Writes cached resources to an output stream in a binary format. Format: - Magic number (int) - Version (int) - Main class name (UTF string) - Fully indexed directory count (int) - For each fully indexed directory: . Directory path (UTF string) - Fully indexed resource count (int) - For each fully indexed resource: . Resource path (UTF string) - Service file count (int) - For each service file: . Resource path (UTF string) . Data length (int) . Data bytes

Parameters:

out - the output stream to write to

mainClass - the main class name

classPath - the full class path of the application

Throws:

IOException - if an I/O error occurs

read

public static AotSerializedApplication read(InputStream in)
                                     throws IOException

Reads cached resources from an input stream.

Parameters:

in - the input stream to read from

Returns:

an AotSerializedApplication containing the main class and cached resources

Throws:

IOException - if an I/O error occurs or the format is invalid