hangc0276 commented on a change in pull request #13316: URL: https://github.com/apache/pulsar/pull/13316#discussion_r778594452
########## File path: pulsar-client/src/main/java/org/apache/pulsar/client/impl/ControlledClusterFailover.java ########## @@ -0,0 +1,277 @@ +/** + * 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.pulsar.client.impl; + +import static org.apache.pulsar.common.util.Runnables.catchingAndLoggingThrowables; +import com.fasterxml.jackson.core.JsonProcessingException; +import com.fasterxml.jackson.databind.ObjectMapper; +import com.google.common.base.Strings; +import io.netty.util.concurrent.DefaultThreadFactory; +import java.io.IOException; +import java.io.InputStream; +import java.net.URL; +import java.net.URLConnection; +import java.nio.charset.StandardCharsets; +import java.util.Map; +import java.util.Objects; +import java.util.concurrent.Executors; +import java.util.concurrent.ScheduledExecutorService; +import java.util.concurrent.TimeUnit; +import lombok.Data; +import lombok.NonNull; +import lombok.extern.slf4j.Slf4j; +import org.apache.commons.io.IOUtils; +import org.apache.pulsar.client.api.Authentication; +import org.apache.pulsar.client.api.AuthenticationFactory; +import org.apache.pulsar.client.api.ControlledClusterFailoverBuilder; +import org.apache.pulsar.client.api.PulsarClient; +import org.apache.pulsar.client.api.ServiceUrlProvider; +import org.apache.pulsar.common.util.ObjectMapperFactory; +import org.checkerframework.checker.nullness.qual.Nullable; + +@Slf4j +public class ControlledClusterFailover implements ServiceUrlProvider { + private PulsarClient pulsarClient; + private volatile String currentPulsarServiceUrl; + private volatile ControlledConfiguration currentControlledConfiguration; + private final URL pulsarUrlProvider; + private final ScheduledExecutorService executor; + private long interval; + private ObjectMapper objectMapper = null; + + private static final String AUTH_SASL = "org.apache.pulsar.client.impl.auth.AuthenticationSasl"; + private static final String AUTH_ATHENZ = "org.apache.pulsar.client.impl.auth.AuthenticationAthenz"; + private static final String AUTH_OAUTH2 = "org.apache.pulsar.client.impl.auth.oauth2.AuthenticationOAuth2"; + private static final String AUTH_TLS = "org.apache.pulsar.client.impl.auth.AuthenticationTls"; + private static final String AUTH_TOKEN = "org.apache.pulsar.client.impl.auth.AuthenticationToken"; + private static final String AUTH_KEY_STORE_TLS = "org.apache.pulsar.client.impl.auth.AuthenticationKeyStoreTls"; + + private ControlledClusterFailover(String defaultServiceUrl, String urlProvider, long interval) throws IOException { + this.currentPulsarServiceUrl = defaultServiceUrl; + this.pulsarUrlProvider = new URL(urlProvider); + this.interval = interval; + this.executor = Executors.newSingleThreadScheduledExecutor( + new DefaultThreadFactory("pulsar-service-provider")); + } + + @Override + public void initialize(PulsarClient client) { + this.pulsarClient = client; + + // start to check service url every 30 seconds + this.executor.scheduleAtFixedRate(catchingAndLoggingThrowables(() -> { + ControlledConfiguration controlledConfiguration = null; + try { + controlledConfiguration = fetchControlledConfiguration(); + if (controlledConfiguration != null + && !Strings.isNullOrEmpty(controlledConfiguration.getServiceUrl()) + && !controlledConfiguration.equals(currentControlledConfiguration)) { + log.info("Switch Pulsar service url from {} to {}", + currentControlledConfiguration, controlledConfiguration.toString()); + + Authentication authentication = null; + if (!Strings.isNullOrEmpty(controlledConfiguration.authPluginClassName)) { + String authPluginClassName = controlledConfiguration.authPluginClassName; + Map<String, String> authParams = controlledConfiguration.getAuthParams(); + String authParamsString = controlledConfiguration.getAuthParamsString(); + String token = controlledConfiguration.getToken(); + + switch (authPluginClassName) { Review comment: done -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
