/**
* Performs the actual installation of the Byte Buddy agent.
*
* @param accessor An available accessor for accessing the Java attachment API.
* @throws Exception If the installation is not possible.
*/
private static void doInstall(AttachmentProvider.Accessor accessor) throws Exception {
Class<?> virtualMachine = accessor.getVirtualMachineType();
Object virtualMachineInstance =
virtualMachine
.getDeclaredMethod(ATTACH_METHOD_NAME, String.class)
.invoke(STATIC_MEMBER, accessor.getProcessId());
File agentJar = File.createTempFile(AGENT_FILE_NAME, JAR_FILE_EXTENSION);
try {
saveAgentJar(agentJar);
virtualMachine
.getDeclaredMethod(LOAD_AGENT_METHOD_NAME, String.class, String.class)
.invoke(virtualMachineInstance, agentJar.getAbsolutePath(), WITHOUT_ARGUMENTS);
} finally {
try {
virtualMachine.getDeclaredMethod(DETACH_METHOD_NAME).invoke(virtualMachineInstance);
} finally {
if (!agentJar.delete()) {
Logger.getAnonymousLogger().info("Cannot delete temporary file: " + agentJar);
}
}
}
}
