| /** |
| * 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.storm.utils; |
| |
| import org.apache.storm.Config; |
| import org.apache.storm.generated.Nimbus; |
| import org.apache.storm.generated.NimbusSummary; |
| import org.apache.storm.security.auth.ReqContext; |
| import org.apache.storm.security.auth.ThriftClient; |
| import org.apache.storm.security.auth.ThriftConnectionType; |
| import com.google.common.collect.Lists; |
| import org.apache.thrift.transport.TTransportException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.security.Principal; |
| import java.util.List; |
| import java.util.Map; |
| |
| public class NimbusClient extends ThriftClient { |
| private Nimbus.Client _client; |
| private static final Logger LOG = LoggerFactory.getLogger(NimbusClient.class); |
| |
| public interface WithNimbus { |
| public void run(Nimbus.Client client) throws Exception; |
| } |
| |
| public static void withConfiguredClient(WithNimbus cb) throws Exception { |
| withConfiguredClient(cb, ConfigUtils.readStormConfig()); |
| } |
| |
| public static void withConfiguredClient(WithNimbus cb, Map conf) throws Exception { |
| ReqContext context = ReqContext.context(); |
| Principal principal = context.principal(); |
| String user = principal == null ? null : principal.getName(); |
| try (NimbusClient client = getConfiguredClientAs(conf, user);) { |
| cb.run(client.getClient()); |
| } |
| } |
| |
| public static NimbusClient getConfiguredClient(Map conf) { |
| return getConfiguredClientAs(conf, null); |
| } |
| |
| public static NimbusClient getConfiguredClient(Map conf, Integer timeout) { |
| return getConfiguredClientAs(conf, null, timeout); |
| } |
| |
| public static NimbusClient getConfiguredClientAs(Map conf, String asUser) { |
| return getConfiguredClientAs(conf, asUser, null); |
| } |
| |
| public static NimbusClient getConfiguredClientAs(Map conf, String asUser, Integer timeout) { |
| if (conf.containsKey(Config.STORM_DO_AS_USER)) { |
| if (asUser != null && !asUser.isEmpty()) { |
| LOG.warn("You have specified a doAsUser as param {} and a doAsParam as config, config will take precedence." |
| , asUser, conf.get(Config.STORM_DO_AS_USER)); |
| } |
| asUser = (String) conf.get(Config.STORM_DO_AS_USER); |
| } |
| |
| List<String> seeds; |
| if(conf.containsKey(Config.NIMBUS_HOST)) { |
| LOG.warn("Using deprecated config {} for backward compatibility. Please update your storm.yaml so it only has config {}", |
| Config.NIMBUS_HOST, Config.NIMBUS_SEEDS); |
| seeds = Lists.newArrayList(conf.get(Config.NIMBUS_HOST).toString()); |
| } else { |
| seeds = (List<String>) conf.get(Config.NIMBUS_SEEDS); |
| } |
| |
| for (String host : seeds) { |
| int port = Integer.parseInt(conf.get(Config.NIMBUS_THRIFT_PORT).toString()); |
| NimbusSummary nimbusSummary; |
| NimbusClient client = null; |
| try { |
| client = new NimbusClient(conf, host, port, timeout, asUser); |
| nimbusSummary = client.getClient().getLeader(); |
| if (nimbusSummary != null) { |
| String leaderNimbus = nimbusSummary.get_host() + ":" + nimbusSummary.get_port(); |
| LOG.info("Found leader nimbus : {}", leaderNimbus); |
| if (nimbusSummary.get_host().equals(host) && nimbusSummary.get_port() == port) { |
| NimbusClient ret = client; |
| client = null; |
| return ret; |
| } |
| try { |
| return new NimbusClient(conf, nimbusSummary.get_host(), nimbusSummary.get_port(), timeout, asUser); |
| } catch (TTransportException e) { |
| throw new RuntimeException("Failed to create a nimbus client for the leader " + leaderNimbus, e); |
| } |
| } |
| } catch (Exception e) { |
| LOG.warn("Ignoring exception while trying to get leader nimbus info from " + host |
| + ". will retry with a different seed host.", e); |
| continue; |
| } finally { |
| if (client != null) { |
| client.close(); |
| } |
| } |
| throw new NimbusLeaderNotFoundException("Could not find a nimbus leader, please try " + |
| "again after some time."); |
| } |
| throw new NimbusLeaderNotFoundException( |
| "Could not find leader nimbus from seed hosts " + seeds + ". " + |
| "Did you specify a valid list of nimbus hosts for config " + |
| Config.NIMBUS_SEEDS + "?"); |
| } |
| |
| public NimbusClient(Map conf, String host, int port) throws TTransportException { |
| this(conf, host, port, null, null); |
| } |
| |
| public NimbusClient(Map conf, String host, int port, Integer timeout) throws TTransportException { |
| super(conf, ThriftConnectionType.NIMBUS, host, port, timeout, null); |
| _client = new Nimbus.Client(_protocol); |
| } |
| |
| public NimbusClient(Map conf, String host, Integer port, Integer timeout, String asUser) throws TTransportException { |
| super(conf, ThriftConnectionType.NIMBUS, host, port, timeout, asUser); |
| _client = new Nimbus.Client(_protocol); |
| } |
| |
| public NimbusClient(Map conf, String host) throws TTransportException { |
| super(conf, ThriftConnectionType.NIMBUS, host, null, null, null); |
| _client = new Nimbus.Client(_protocol); |
| } |
| |
| public Nimbus.Client getClient() { |
| return _client; |
| } |
| } |