Package io.opentelemetry.javaagent.bootstrap

Class AgentInitializer

java.lang.Object

io.opentelemetry.javaagent.bootstrap.AgentInitializer

public final class AgentInitializer
extends Object

Agent start up logic.

This class is loaded and called by io.opentelemetry.javaagent.OpenTelemetryAgent

The intention is for this class to be loaded by bootstrap class loader to make sure we have unimpeded access to the rest of agent parts.

Method Summary

Modifier and Type	Method	Description
static void	delayedStartHook()	Call to this method is inserted into sun.launcher.LauncherHelper.checkAndLoadMain().
static ClassLoader	getExtensionsClassLoader()
static void	initialize(Instrumentation inst, File javaagentFile, boolean fromPremain, String agentArgs)
static boolean	isAgentStarted(boolean vmStarted)	Check whether agent has started or not along with VM.

Methods inherited from class java.lang.Object

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

Method Details

initialize

public static void initialize(Instrumentation inst,
 File javaagentFile,
 boolean fromPremain,
 @Nullable
 String agentArgs)
                       throws Exception

Throws:

Exception

delayedStartHook

public static void delayedStartHook()
                             throws Exception

Call to this method is inserted into sun.launcher.LauncherHelper.checkAndLoadMain().

Throws:

Exception

isAgentStarted

public static boolean isAgentStarted(boolean vmStarted)

Check whether agent has started or not along with VM.

This method is used by io.opentelemetry.javaagent.tooling.AgentStarterImpl#InetAddressClassFileTransformer internally to check whether agent has started.

Parameters:

vmStarted - flag about whether VM has started or not.

Returns:

true if agent has started or not along with VM, false otherwise.

getExtensionsClassLoader

@Nullable
public static ClassLoader getExtensionsClassLoader()