92 lines
3.2 KiB
Java
92 lines
3.2 KiB
Java
/**
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*
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* Copyright 2014-2018 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.InputStream;
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import java.net.URI;
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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.SmackInitialization;
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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.CloseableUtil;
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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 #getProvidersUri()} and the generic
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* smack configuration file returned {@link #getConfigUri()}.
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*
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* @author Florian Schmaus
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*/
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public abstract class UrlInitializer implements SmackInitializer {
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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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InputStream is = null;
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final ClassLoader classLoader = this.getClass().getClassLoader();
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final List<Exception> exceptions = new LinkedList<Exception>();
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final String providerUriString = getProvidersUri();
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if (providerUriString != null) {
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try {
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final URI providerUri = URI.create(providerUriString);
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is = FileUtils.getStreamForUri(providerUri, classLoader);
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LOGGER.log(Level.FINE, "Loading providers for providerUri [" + providerUri + "]");
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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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catch (Exception e) {
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LOGGER.log(Level.SEVERE, "Error trying to load provider file " + providerUriString, e);
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exceptions.add(e);
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} finally {
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maybeClose(is);
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}
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}
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final String configUriString = getConfigUri();
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if (configUriString != null) {
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try {
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final URI configUri = URI.create(configUriString);
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is = FileUtils.getStreamForUri(configUri, classLoader);
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SmackInitialization.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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} finally {
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maybeClose(is);
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}
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}
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return exceptions;
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}
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protected String getProvidersUri() {
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return null;
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}
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protected String getConfigUri() {
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return null;
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}
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private static void maybeClose(InputStream is) {
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CloseableUtil.maybeClose(is, LOGGER);
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}
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}
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