2014-05-15 15:04:46 +02:00
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/**
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*
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* Copyright 2014 Florian Schmaus
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smack.initializer;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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import org.jivesoftware.smack.SmackConfiguration;
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import org.jivesoftware.smack.provider.ProviderFileLoader;
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import org.jivesoftware.smack.provider.ProviderManager;
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import org.jivesoftware.smack.util.FileUtils;
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/**
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* Loads the provider file defined by the URL returned by {@link #getProvidersUrl()} and the generic
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* smack configuration file returned {@link #getConfigUrl()}.
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*
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* @author Florian Schmaus
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*/
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2014-07-20 11:19:50 +02:00
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public abstract class UrlInitializer extends SmackAndOsgiInitializer {
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2014-05-15 15:04:46 +02:00
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private static final Logger LOGGER = Logger.getLogger(UrlInitializer.class.getName());
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@Override
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public List<Exception> initialize() {
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return initialize(this.getClass().getClassLoader());
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}
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@Override
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public List<Exception> initialize(ClassLoader classLoader) {
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InputStream is;
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final List<Exception> exceptions = new LinkedList<Exception>();
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final String providerUrl = getProvidersUrl();
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if (providerUrl != null) {
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try {
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is = FileUtils.getStreamForUrl(providerUrl, classLoader);
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if (is != null) {
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LOGGER.log(Level.FINE, "Loading providers for providerUrl [" + providerUrl
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+ "]");
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ProviderFileLoader pfl = new ProviderFileLoader(is, classLoader);
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ProviderManager.addLoader(pfl);
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exceptions.addAll(pfl.getLoadingExceptions());
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}
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else {
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LOGGER.log(Level.WARNING, "No input stream created for " + providerUrl);
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exceptions.add(new IOException("No input stream created for " + providerUrl));
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}
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}
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catch (Exception e) {
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LOGGER.log(Level.SEVERE, "Error trying to load provider file " + providerUrl, e);
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exceptions.add(e);
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}
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}
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final String configUrl = getConfigUrl();
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if (configUrl != null) {
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try {
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is = FileUtils.getStreamForUrl(configUrl, classLoader);
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SmackConfiguration.processConfigFile(is, exceptions, classLoader);
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}
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catch (Exception e) {
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exceptions.add(e);
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}
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}
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return exceptions;
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}
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protected String getProvidersUrl() {
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return null;
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}
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protected String getConfigUrl() {
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return null;
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}
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}
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