org.apache.flink.runtime.webmonitor.history.HistoryServerUtils 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.flink.runtime.webmonitor.history;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.configuration.HistoryServerOptions;
import org.apache.flink.runtime.net.SSLUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.annotation.Nullable;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Optional;
/**
* Utility class for the HistoryServer.
*/
public enum HistoryServerUtils {
;
private static final Logger LOG = LoggerFactory.getLogger(HistoryServerUtils.class);
public static boolean isSSLEnabled(Configuration config) {
return config.getBoolean(HistoryServerOptions.HISTORY_SERVER_WEB_SSL_ENABLED) && SSLUtils.isRestSSLEnabled(config);
}
public static Optional getHistoryServerURL(Configuration configuration) {
final String hostname = getHostname(configuration);
if (hostname != null) {
final String protocol = getProtocol(configuration);
final int port = getPort(configuration);
try {
return Optional.of(new URL(protocol, hostname, port, ""));
} catch (MalformedURLException e) {
LOG.debug("Could not create the HistoryServer's URL from protocol: {}, hostname: {} and port: {}.", protocol, hostname, port, e);
return Optional.empty();
}
} else {
LOG.debug("Not hostname has been specified for the HistoryServer. This indicates that it has not been started.");
return Optional.empty();
}
}
private static int getPort(Configuration configuration) {
return configuration.getInteger(HistoryServerOptions.HISTORY_SERVER_WEB_PORT);
}
@Nullable
private static String getHostname(Configuration configuration) {
return configuration.getString(HistoryServerOptions.HISTORY_SERVER_WEB_ADDRESS);
}
private static String getProtocol(Configuration configuration) {
if (isSSLEnabled(configuration)) {
return "https";
} else {
return "http";
}
}
}