pulsar-broker/src/main/java/org/apache/pulsar/broker/web/ProcessHandlerFilter.java

/**
 * 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.pulsar.broker.web;

import java.io.IOException;
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 javax.ws.rs.core.MediaType;
import org.apache.commons.lang3.StringUtils;
import org.apache.pulsar.broker.PulsarService;
import org.apache.pulsar.broker.intercept.BrokerInterceptor;

public class ProcessHandlerFilter implements Filter {

    private final BrokerInterceptor interceptor;
    private final boolean interceptorEnabled;

    public ProcessHandlerFilter(PulsarService pulsar) {
        this.interceptor = pulsar.getBrokerInterceptor();
        this.interceptorEnabled = !pulsar.getConfig().getBrokerInterceptors().isEmpty();
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        if (interceptorEnabled
                && !StringUtils.containsIgnoreCase(request.getContentType(), MediaType.MULTIPART_FORM_DATA)
                && !StringUtils.containsIgnoreCase(request.getContentType(), MediaType.APPLICATION_OCTET_STREAM)) {
            interceptor.onFilter(request, response, chain);
        } else {
            chain.doFilter(request, response);
        }
    }

    @Override
    public void init(FilterConfig arg) throws ServletException {
        // No init necessary.
    }

    @Override
    public void destroy() {
        // No state to clean up.
    }
}