io.werval.api.context

Class ThreadContextHelper

java.lang.Object

io.werval.api.context.ThreadContextHelper

public final class ThreadContextHelper
extends Object

Current Thread Context Helper.

Constructor Summary

Constructors

Constructor and Description
ThreadContextHelper()

Method Summary

Modifier and Type	Method and Description
void	clearCurrentThread() Remove Context from current Thread.
void	setOnCurrentThread(Context context) Set Context on current Thread.
static <T> T	withContext(Context context, Callable<T> callable) Run a Callable with a Context.
static void	withContext(Context context, Runnable runnable) Run a Runnable with a Context.

Methods inherited from class java.lang.Object

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

Constructor Detail

ThreadContextHelper

public ThreadContextHelper()

Method Detail

withContext

public static void withContext(Context context,
                               Runnable runnable)

Run a Runnable with a Context.

Use a ThreadContextHelper instance, see its methods documentation.

Parameters:

context - Context

runnable - Runnable

withContext

public static <T> T withContext(Context context,
                                Callable<T> callable)
                         throws Exception

Run a Callable with a Context.

Use a ThreadContextHelper instance, see its methods documentation.

Type Parameters:

T - Parameterized type of the Callable result

Parameters:

context - Context

callable - Callable

Returns:

Callable result

Throws:

Exception - if the Callable was unable to compute a result

setOnCurrentThread

public void setOnCurrentThread(Context context)

Set Context on current Thread.

In order:

• Keep previous thread context ClassLoader.
• Set thread ClassLoader.
• Set thread Context ThreadLocal.
• Put current Request ID in SLF4J MDC at the Headers.Names.X_WERVAL_REQUEST_ID key.
• Put current Request Client IP in SLF4J MDC at the Headers.Names.X_WERVAL_CLIENT_IP key if enabled in the configuration.

Parameters:

context - Context

clearCurrentThread

public void clearCurrentThread()

Remove Context from current Thread.

In order:

• Remove current Request ID from SLF4J MDC.
• Set thread ClassLoader to previous one.
• Remove thread Context ThreadLocal.