components/camel-http-common/src/main/java/org/apache/camel/http/common/HttpCommonComponent.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.camel.http.common;

import java.util.Map;

import org.apache.camel.spi.Metadata;
import org.apache.camel.support.CamelContextHelper;
import org.apache.camel.support.HeaderFilterStrategyComponent;

public abstract class HttpCommonComponent extends HeaderFilterStrategyComponent {

    @Metadata(label = "advanced", description = "To use a custom HttpBinding to control the mapping between Camel message and HttpClient.")
    protected HttpBinding httpBinding;
    @Metadata(label = "advanced", description = "To use the shared HttpConfiguration as base configuration.")
    protected HttpConfiguration httpConfiguration;
    @Metadata(label = "advanced", description = "Whether to allow java serialization when a request uses context-type=application/x-java-serialized-object."
        + " This is by default turned off. "
        + " If you enable this then be aware that Java will deserialize the incoming data from the request to Java and that can be a potential security risk.")
    protected boolean allowJavaSerializedObject;

    public HttpCommonComponent() {
    }

    /**
     * Gets the parameter. This method doesn't resolve reference parameters in the registry.
     *
     * @param parameters    the parameters
     * @param key           the key
     * @param type          the requested type to convert the value from the parameter
     * @return  the converted value parameter
     */
    public <T> T getParameter(Map<String, Object> parameters, String key, Class<T> type) {
        return getParameter(parameters, key, type, null);
    }

    /**
     * Gets the parameter. This method doesn't resolve reference parameters in the registry.
     *
     * @param parameters    the parameters
     * @param key           the key
     * @param type          the requested type to convert the value from the parameter
     * @param defaultValue  use this default value if the parameter does not contain the key
     * @return  the converted value parameter
     */
    public <T> T getParameter(Map<String, Object> parameters, String key, Class<T> type, T defaultValue) {
        Object value = parameters.get(key);
        if (value == null) {
            value = defaultValue;
        }
        if (value == null) {
            return null;
        }

        return CamelContextHelper.convertTo(getCamelContext(), type, value);
    }

    /**
     * Connects the URL specified on the endpoint to the specified processor.
     *
     * @param consumer the consumer
     * @throws Exception can be thrown
     */
    public void connect(HttpConsumer consumer) throws Exception {
    }

    /**
     * Disconnects the URL specified on the endpoint from the specified processor.
     *
     * @param consumer the consumer
     * @throws Exception can be thrown
     */
    public void disconnect(HttpConsumer consumer) throws Exception {
    }

    /**
     * Checks whether the consumer is possible to connect to the endoint.
     *
     * @param consumer the consumer
     * @throws Exception can be thrown
     */
    public boolean canConnect(HttpConsumer consumer) throws Exception {
        return true;
    }

    @Override
    protected boolean useIntrospectionOnEndpoint() {
        return false;
    }

    public HttpBinding getHttpBinding() {
        return httpBinding;
    }

    /**
     * To use a custom HttpBinding to control the mapping between Camel message and HttpClient.
     */
    public void setHttpBinding(HttpBinding httpBinding) {
        this.httpBinding = httpBinding;
    }

    public HttpConfiguration getHttpConfiguration() {
        return httpConfiguration;
    }

    /**
     * To use the shared HttpConfiguration as base configuration.
     */
    public void setHttpConfiguration(HttpConfiguration httpConfiguration) {
        this.httpConfiguration = httpConfiguration;
    }

    public boolean isAllowJavaSerializedObject() {
        return allowJavaSerializedObject;
    }

    /**
     * Whether to allow java serialization when a request uses context-type=application/x-java-serialized-object
     * <p/>
     * This is by default turned off. If you enable this then be aware that Java will deserialize the incoming
     * data from the request to Java and that can be a potential security risk.
     */
    public void setAllowJavaSerializedObject(boolean allowJavaSerializedObject) {
        this.allowJavaSerializedObject = allowJavaSerializedObject;
    }

}