| /** |
| * 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.impl; |
| |
| import java.lang.reflect.Field; |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| import java.util.Map; |
| |
| import org.apache.camel.CamelContext; |
| import org.apache.camel.Component; |
| import org.apache.camel.EndpointConfiguration; |
| import org.apache.camel.RuntimeCamelException; |
| import org.apache.camel.URIField; |
| import org.apache.camel.util.IntrospectionSupport; |
| import org.apache.camel.util.URISupport; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Some helper methods for working with {@link EndpointConfiguration} instances |
| * |
| */ |
| public final class ConfigurationHelper { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(ConfigurationHelper.class); |
| |
| private ConfigurationHelper() { |
| //Utility Class |
| } |
| |
| public interface ParameterSetter { |
| |
| /** |
| * Sets the parameter on the configuration. |
| * |
| * @param camelContext the camel context |
| * @param config the configuration |
| * @param name the name of the parameter |
| * @param value the value to set |
| * @throws RuntimeCamelException is thrown if error setting the parameter |
| */ |
| <T> void set(CamelContext camelContext, EndpointConfiguration config, String name, T value) throws RuntimeCamelException; |
| } |
| |
| public static EndpointConfiguration createConfiguration(String uri, CamelContext context) throws Exception { |
| int schemeSeparator = uri.indexOf(':'); |
| if (schemeSeparator == -1) { |
| // not an URIConfiguration |
| return null; |
| } |
| String scheme = uri.substring(0, schemeSeparator); |
| |
| Component component = context.getComponent(scheme); |
| if (LOG.isTraceEnabled()) { |
| LOG.trace("Lookup for Component handling \"{}:\" configuration returned {}", |
| new Object[]{scheme, component != null ? component.getClass().getName() : "<null>"}); |
| } |
| if (component != null) { |
| EndpointConfiguration config = component.createConfiguration(scheme); |
| if (config instanceof DefaultEndpointConfiguration) { |
| ((DefaultEndpointConfiguration) config).setURI(uri); |
| } |
| return config; |
| } else { |
| // no component to create the configuration |
| return null; |
| } |
| } |
| |
| public static void populateFromURI(CamelContext camelContext, EndpointConfiguration config, ParameterSetter setter) { |
| URI uri = config.getURI(); |
| |
| setter.set(camelContext, config, EndpointConfiguration.URI_SCHEME, uri.getScheme()); |
| setter.set(camelContext, config, EndpointConfiguration.URI_SCHEME_SPECIFIC_PART, uri.getSchemeSpecificPart()); |
| setter.set(camelContext, config, EndpointConfiguration.URI_AUTHORITY, uri.getAuthority()); |
| setter.set(camelContext, config, EndpointConfiguration.URI_USER_INFO, uri.getUserInfo()); |
| setter.set(camelContext, config, EndpointConfiguration.URI_HOST, uri.getHost()); |
| setter.set(camelContext, config, EndpointConfiguration.URI_PORT, Integer.toString(uri.getPort())); |
| setter.set(camelContext, config, EndpointConfiguration.URI_PATH, uri.getPath()); |
| setter.set(camelContext, config, EndpointConfiguration.URI_QUERY, uri.getQuery()); |
| setter.set(camelContext, config, EndpointConfiguration.URI_FRAGMENT, uri.getFragment()); |
| |
| // now parse query and set custom parameters |
| Map<String, Object> parameters; |
| try { |
| parameters = URISupport.parseParameters(uri); |
| for (Map.Entry<String, Object> pair : parameters.entrySet()) { |
| setter.set(camelContext, config, pair.getKey(), pair.getValue()); |
| } |
| } catch (URISyntaxException e) { |
| throw new RuntimeCamelException(e); |
| } |
| } |
| |
| public static Field findConfigurationField(EndpointConfiguration config, String name) { |
| if (config != null && name != null) { |
| Class<?> clazz = config.getClass(); |
| Field[] fields = clazz.getDeclaredFields(); |
| |
| Field found; |
| URIField anno; |
| for (final Field field : fields) { |
| anno = field.getAnnotation(URIField.class); |
| if (anno == null ? field.getName().equals(name) : anno.component().equals(name) |
| || (anno.component().equals(EndpointConfiguration.URI_QUERY) && anno.parameter().equals(name))) { |
| |
| found = field; |
| LOG.trace("Found field {}.{} as candidate for parameter {}", new Object[]{clazz.getName(), found.getName(), name}); |
| return found; |
| } |
| } |
| } |
| return null; |
| } |
| |
| public static Object getConfigurationParameter(EndpointConfiguration config, String name) { |
| Field field = findConfigurationField(config, name); |
| return getConfigurationParameter(config, field); |
| } |
| |
| public static Object getConfigurationParameter(EndpointConfiguration config, Field field) { |
| if (field != null) { |
| try { |
| return IntrospectionSupport.getProperty(config, field.getName()); |
| } catch (Exception e) { |
| throw new RuntimeCamelException("Failed to get property '" + field.getName() + "' on " + config + " due " + e.getMessage(), e); |
| } |
| } |
| return null; |
| } |
| |
| public static <T> void setConfigurationField(CamelContext camelContext, EndpointConfiguration config, String name, T value) { |
| Field field = findConfigurationField(config, name); |
| if (field == null) { |
| return; |
| } |
| |
| try { |
| IntrospectionSupport.setProperty(camelContext.getTypeConverter(), config, name, value); |
| } catch (Exception e) { |
| throw new RuntimeCamelException("Failed to set property '" + name + "' on " + config + " due " + e.getMessage(), e); |
| } |
| } |
| |
| public static class FieldParameterSetter implements ParameterSetter { |
| @Override |
| public <T> void set(CamelContext camelContext, EndpointConfiguration config, String name, T value) { |
| setConfigurationField(camelContext, config, name, value); |
| } |
| } |
| } |