org.apache.activemq.jaas.ReloadableProperties Maven / Gradle / Ivy
/**
* 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.activemq.jaas;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ReloadableProperties {
private static final Logger LOG = LoggerFactory.getLogger(ReloadableProperties.class);
private Properties props = new Properties();
private Map invertedProps;
private Map> invertedValueProps;
private Map regexpProps;
private long reloadTime = -1;
private final PropertiesLoader.FileNameKey key;
public ReloadableProperties(PropertiesLoader.FileNameKey key) {
this.key = key;
}
public synchronized Properties getProps() {
return props;
}
public synchronized ReloadableProperties obtained() {
if (reloadTime < 0 || (key.isReload() && hasModificationAfter(reloadTime))) {
props = new Properties();
try {
load(key.file(), props);
invertedProps = null;
invertedValueProps = null;
regexpProps = null;
if (key.isDebug()) {
LOG.debug("Load of: " + key);
}
} catch (IOException e) {
LOG.error("Failed to load: " + key + ", reason:" + e.getLocalizedMessage());
if (key.isDebug()) {
LOG.debug("Load of: " + key + ", failure exception" + e);
}
}
reloadTime = System.currentTimeMillis();
}
return this;
}
public synchronized Map invertedPropertiesMap() {
if (invertedProps == null) {
invertedProps = new HashMap<>(props.size());
for (Map.Entry val : props.entrySet()) {
String str = (String) val.getValue();
if (!looksLikeRegexp(str)) {
invertedProps.put(str, (String) val.getKey());
}
}
}
return invertedProps;
}
public synchronized Map> invertedPropertiesValuesMap() {
if (invertedValueProps == null) {
invertedValueProps = new HashMap<>(props.size());
for (Map.Entry val : props.entrySet()) {
String[] userList = ((String)val.getValue()).split(",");
for (String user : userList) {
Set set = invertedValueProps.get(user);
if (set == null) {
set = new HashSet<>();
invertedValueProps.put(user, set);
}
set.add((String)val.getKey());
}
}
}
return invertedValueProps;
}
public synchronized Map regexpPropertiesMap() {
if (regexpProps == null) {
regexpProps = new HashMap<>(props.size());
for (Map.Entry val : props.entrySet()) {
String str = (String) val.getValue();
if (looksLikeRegexp(str)) {
try {
Pattern p = Pattern.compile(str.substring(1, str.length() - 1));
regexpProps.put((String) val.getKey(), p);
} catch (PatternSyntaxException e) {
LOG.warn("Ignoring invalid regexp: " + str);
}
}
}
}
return regexpProps;
}
private void load(final File source, Properties props) throws IOException {
FileInputStream in = new FileInputStream(source);
try {
props.load(in);
if (key.isDecrypt()) {
try {
EncryptionSupport.decrypt(this.props);
} catch (NoClassDefFoundError e) {
// this Happens whe jasypt is not on the classpath..
key.setDecrypt(false);
LOG.info("jasypt is not on the classpath: password decryption disabled.");
}
}
} finally {
in.close();
}
}
private boolean hasModificationAfter(long reloadTime) {
return key.file.lastModified() > reloadTime;
}
private boolean looksLikeRegexp(String str) {
int len = str.length();
return len > 2 && str.charAt(0) == '/' && str.charAt(len - 1) == '/';
}
}