Package org.apache.logging.log4j.core

Examples of org.apache.logging.log4j.core.LoggerContext

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        if (name == null) {
            LOGGER.error("A context name is required to locate a LoggerContext");
            return null;
        }
        if (!CONTEXT_MAP.containsKey(name)) {
            final LoggerContext ctx = new LoggerContext(name, null, configLocation);
            CONTEXT_MAP.putIfAbsent(name, ctx);
        }
        return CONTEXT_MAP.get(name);
    }
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     * @return The LoggerContext.
     */
    @Override
    public LoggerContext getContext(final String fqcn, final ClassLoader loader, final boolean currentContext,
            URI configLocation) {
        final LoggerContext ctx = selector.getContext(fqcn, loader, currentContext, configLocation);
        if (ctx.getStatus() == LoggerContext.Status.INITIALIZED) {
            ctx.start();
        }
        return ctx;
    }
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    public static Logger getLogger(final String name, final LoggerFactory factory) {
        return (Logger) Category.getInstance((LoggerContext) PrivateManager.getContext(), name);
    }

    public static Logger exists(final String name) {
        final LoggerContext ctx = (LoggerContext) PrivateManager.getContext();
        if (!ctx.hasLogger(name)) {
            return null;
        }
        return Logger.getLogger(name);
    }
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    public static Enumeration getCurrentLoggers() {
        return NullEnumeration.getInstance();
    }

    static void reconfigure() {
        final LoggerContext ctx = (LoggerContext) PrivateManager.getContext();
        ctx.reconfigure();
    }
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        if (name == null) {
            throw new UnavailableException("A context-name attribute is required");
        }
        if (context.getAttribute(Log4jContextListener.LOG4J_CONTEXT_ATTRIBUTE) == null) {
            LoggerContext ctx;
            final LoggerContextFactory factory = LogManager.getFactory();
            if (factory instanceof Log4jContextFactory) {
                final ContextSelector sel = ((Log4jContextFactory) factory).getSelector();
                if (sel instanceof NamedContextSelector) {
                    selector = (NamedContextSelector) sel;
                    ctx = selector.locateContext(name, configLocation);
                } else {
                    return;
                }
            } else {
                return;
            }
            context.setAttribute(Log4jContextListener.LOG4J_CONTEXT_ATTRIBUTE, ctx);
            created = true;
            context.log("Created context for " + name + " using " + ctx.getClass().getClassLoader());
        }
    }
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    @Override
    public void doFilter(final ServletRequest servletRequest, final ServletResponse servletResponse,
                         final FilterChain filterChain)
        throws IOException, ServletException {
        final LoggerContext ctx = (LoggerContext) context.getAttribute(Log4jContextListener.LOG4J_CONTEXT_ATTRIBUTE);
        if (ctx != null) {
            ContextAnchor.THREAD_CONTEXT.set(ctx);
            try {
                filterChain.doFilter(servletRequest, servletResponse);
            } finally {
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        }
    }

    @Override
    public void destroy() {
        final LoggerContext ctx = (LoggerContext) context.getAttribute(Log4jContextListener.LOG4J_CONTEXT_ATTRIBUTE);
        if (ctx != null && created) {
            context.log("Removing context for " + name);
            context.removeAttribute(Log4jContextListener.LOG4J_CONTEXT_ATTRIBUTE);
            if (selector != null) {
                selector.removeContext(name);
            }
            ctx.stop();
        }
    }
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     * Shutdown logging for the web application.
     * @param event The ServletContextEvent.
     */
    @Override
    public void contextDestroyed(final ServletContextEvent event) {
        final LoggerContext ctx = (LoggerContext) event.getServletContext().getAttribute(LOG4J_CONTEXT_ATTRIBUTE);
        Configurator.shutdown(ctx);
    }
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        if (this.name == null) {
            throw new IllegalStateException("A log4jContextName context parameter is required");
        }

        LoggerContext context;
        final LoggerContextFactory factory = LogManager.getFactory();
        if (factory instanceof Log4jContextFactory) {
            final ContextSelector selector = ((Log4jContextFactory) factory).getSelector();
            if (selector instanceof NamedContextSelector) {
                this.namedContextSelector = (NamedContextSelector) selector;
                context = this.namedContextSelector.locateContext(this.name, this.servletContext, configLocation);
                ContextAnchor.THREAD_CONTEXT.set(context);
                if (context.isInitialized()) {
                    context.start();
                }
                ContextAnchor.THREAD_CONTEXT.remove();
            } else {
                // won't it be amusing if the servlet container uses Log4j as its ServletContext logger?
                this.servletContext.log("Potential problem: Selector is not an instance of NamedContextSelector.");
                return;
            }
        } else {
            this.servletContext.log("Potential problem: Factory is not an instance of Log4jContextFactory.");
            return;
        }
        this.loggerContext = context;
        this.servletContext.log("Created logger context for [" + this.name + "] using [" +
                context.getClass().getClassLoader() + "].");
    }
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        if (this.name == null) {
            throw new IllegalStateException("A log4jContextName context parameter is required");
        }

        LoggerContext context;
        final LoggerContextFactory factory = LogManager.getFactory();
        if (factory instanceof Log4jContextFactory) {
            final ContextSelector selector = ((Log4jContextFactory) factory).getSelector();
            if (selector instanceof NamedContextSelector) {
                this.namedContextSelector = (NamedContextSelector) selector;
                context = this.namedContextSelector.locateContext(this.name, this.servletContext, configLocation);
                ContextAnchor.THREAD_CONTEXT.set(context);
                if (context.isInitialized()) {
                    context.start();
                }
                ContextAnchor.THREAD_CONTEXT.remove();
            } else {
                // won't it be amusing if the servlet container uses Log4j as its ServletContext logger?
                this.servletContext.log("Potential problem: Selector is not an instance of NamedContextSelector.");
                return;
            }
        } else {
            this.servletContext.log("Potential problem: Factory is not an instance of Log4jContextFactory.");
            return;
        }
        this.loggerContext = context;
        this.servletContext.log("Created logger context for [" + this.name + "] using [" +
                context.getClass().getClassLoader() + "].");
    }
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