UrlInitializer.java
- /**
- *
- * Copyright 2014-2018 Florian Schmaus
- *
- * Licensed 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.jivesoftware.smack.initializer;
- import java.io.InputStream;
- import java.net.URI;
- import java.util.LinkedList;
- import java.util.List;
- import java.util.logging.Level;
- import java.util.logging.Logger;
- import org.jivesoftware.smack.SmackInitialization;
- import org.jivesoftware.smack.provider.ProviderFileLoader;
- import org.jivesoftware.smack.provider.ProviderManager;
- import org.jivesoftware.smack.util.CloseableUtil;
- import org.jivesoftware.smack.util.FileUtils;
- /**
- * Loads the provider file defined by the URL returned by {@link #getProvidersUri()} and the generic
- * smack configuration file returned {@link #getConfigUri()}.
- *
- * @author Florian Schmaus
- */
- public abstract class UrlInitializer implements SmackInitializer {
- private static final Logger LOGGER = Logger.getLogger(UrlInitializer.class.getName());
- @Override
- public List<Exception> initialize() {
- InputStream is = null;
- final ClassLoader classLoader = this.getClass().getClassLoader();
- final List<Exception> exceptions = new LinkedList<Exception>();
- final String providerUriString = getProvidersUri();
- if (providerUriString != null) {
- try {
- final URI providerUri = URI.create(providerUriString);
- is = FileUtils.getStreamForUri(providerUri, classLoader);
- LOGGER.log(Level.FINE, "Loading providers for providerUri [" + providerUri + "]");
- ProviderFileLoader pfl = new ProviderFileLoader(is, classLoader);
- ProviderManager.addLoader(pfl);
- exceptions.addAll(pfl.getLoadingExceptions());
- }
- catch (Exception e) {
- LOGGER.log(Level.SEVERE, "Error trying to load provider file " + providerUriString, e);
- exceptions.add(e);
- } finally {
- maybeClose(is);
- }
- }
- final String configUriString = getConfigUri();
- if (configUriString != null) {
- try {
- final URI configUri = URI.create(configUriString);
- is = FileUtils.getStreamForUri(configUri, classLoader);
- SmackInitialization.processConfigFile(is, exceptions, classLoader);
- }
- catch (Exception e) {
- exceptions.add(e);
- } finally {
- maybeClose(is);
- }
- }
- return exceptions;
- }
- protected String getProvidersUri() {
- return null;
- }
- protected String getConfigUri() {
- return null;
- }
- private static void maybeClose(InputStream is) {
- CloseableUtil.maybeClose(is, LOGGER);
- }
- }