/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.sling.engine.impl.debug;

import java.io.IOException;
import java.util.Iterator;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Properties;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Service;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.request.RequestProgressTracker;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Filter that dumps the output of the RequestProgressTracker to the log after
 * processing the request.
 *
 */
@Component
@Service
@Properties({
    @Property(name="service.description", value="RequestProgressTracker dump filter"),
    @Property(name="service.vendor", value="The Apache Software Foundation"),
    @Property(name="filter.scope", value="request", propertyPrivate=true)
})
public class RequestProgressTrackerLogFilter implements Filter {

    private static final Logger log = LoggerFactory.getLogger(RequestProgressTrackerLogFilter.class);

    private int requestCounter;

    public void init(FilterConfig filterConfig) throws ServletException {
    }

    public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain) throws IOException, ServletException {

        chain.doFilter(request, response);

        if (request instanceof SlingHttpServletRequest) {
            final RequestProgressTracker t = ((SlingHttpServletRequest) request).getRequestProgressTracker();
            t.done();

            if (log.isDebugEnabled()) {
                int requestId = 0;
                synchronized (getClass()) {
                    requestId = ++requestCounter;
                }
                final Iterator<String> it = t.getMessages();
                while (it.hasNext()) {
                    log.debug("REQUEST_{} - " + it.next(), requestId);
                }
            }
        }
    }

    public void destroy() {
    }

}
/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.sling.engine.impl.debug;

import java.io.IOException;
import java.util.Iterator;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Properties;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Service;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.request.RequestProgressTracker;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Filter that dumps the output of the RequestProgressTracker to the log after
 * processing the request.
 *
 */
@Component
@Service
@Properties({
    @Property(name="service.description", value="RequestProgressTracker dump filter"),
    @Property(name="service.vendor", value="The Apache Software Foundation"),
    @Property(name="filter.scope", value="request")
})
public class RequestProgressTrackerLogFilter implements Filter {

    private static final Logger log = LoggerFactory.getLogger(RequestProgressTrackerLogFilter.class);

    private int requestCounter;

    public void init(FilterConfig filterConfig) throws ServletException {
    }

    public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain) throws IOException, ServletException {

        chain.doFilter(request, response);

        if (request instanceof SlingHttpServletRequest) {
            final RequestProgressTracker t = ((SlingHttpServletRequest) request).getRequestProgressTracker();
            t.done();

            if (log.isDebugEnabled()) {
                int requestId = 0;
                synchronized (getClass()) {
                    requestId = ++requestCounter;
                }
                final Iterator<String> it = t.getMessages();
                while (it.hasNext()) {
                    log.debug("REQUEST_{} - " + it.next(), requestId);
                }
            }
        }
    }

    public void destroy() {
    }

}
Clean up usage of SCR annotations