001/**
002 * Logback: the reliable, generic, fast and flexible logging framework.
003 * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
004 *
005 * This program and the accompanying materials are dual-licensed under
006 * either the terms of the Eclipse Public License v1.0 as published by
007 * the Eclipse Foundation
008 *
009 *   or (per the licensee's choosing)
010 *
011 * under the terms of the GNU Lesser General Public License version 2.1
012 * as published by the Free Software Foundation.
013 */
014package ch.qos.logback.core.spi;
015
016import ch.qos.logback.core.Context;
017import ch.qos.logback.core.status.ErrorStatus;
018import ch.qos.logback.core.status.InfoStatus;
019import ch.qos.logback.core.status.Status;
020import ch.qos.logback.core.status.StatusManager;
021import ch.qos.logback.core.status.WarnStatus;
022
023/**
024 * A helper class that implements ContextAware methods. Use this class to
025 * implement the ContextAware interface by composition.
026 * 
027 * @author Ceki Gülcü
028 */
029public class ContextAwareImpl implements ContextAware {
030
031    private int noContextWarning = 0;
032    protected Context context;
033    final Object origin;
034
035    public ContextAwareImpl(Context context, Object origin) {
036        this.context = context;
037        this.origin = origin;
038
039    }
040
041    protected Object getOrigin() {
042        return origin;
043    }
044
045    public void setContext(Context context) {
046        if (this.context == null) {
047            this.context = context;
048        } else if (this.context != context) {
049            throw new IllegalStateException("Context has been already set");
050        }
051    }
052
053    public Context getContext() {
054        return this.context;
055    }
056
057    public StatusManager getStatusManager() {
058        if (context == null) {
059            return null;
060        }
061        return context.getStatusManager();
062    }
063
064    public void addStatus(Status status) {
065        if (context == null) {
066            if (noContextWarning++ == 0) {
067                System.out.println("LOGBACK: No context given for " + this);
068            }
069            return;
070        }
071        StatusManager sm = context.getStatusManager();
072        if (sm != null) {
073            sm.add(status);
074        }
075    }
076
077    public void addInfo(String msg) {
078        addStatus(new InfoStatus(msg, getOrigin()));
079    }
080
081    public void addInfo(String msg, Throwable ex) {
082        addStatus(new InfoStatus(msg, getOrigin(), ex));
083    }
084
085    public void addWarn(String msg) {
086        addStatus(new WarnStatus(msg, getOrigin()));
087    }
088
089    public void addWarn(String msg, Throwable ex) {
090        addStatus(new WarnStatus(msg, getOrigin(), ex));
091    }
092
093    public void addError(String msg) {
094        addStatus(new ErrorStatus(msg, getOrigin()));
095    }
096
097    public void addError(String msg, Throwable ex) {
098        addStatus(new ErrorStatus(msg, getOrigin(), ex));
099    }
100
101}