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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> */<a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.io.IOException;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.util.Collections;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.HashSet;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.Objects;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.Set;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.commons.lang3.StringUtils;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.client.AsyncAdmin;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.client.AsyncConnection;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.client.ConnectionFactory;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.coprocessor.protobuf.generated.ShellExecEndpoint.ShellExecRequest;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.coprocessor.protobuf.generated.ShellExecEndpoint.ShellExecResponse;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.coprocessor.protobuf.generated.ShellExecEndpoint.ShellExecService;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.slf4j.Logger;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.slf4j.LoggerFactory;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span><a name="line.36"></a> |
| <span class="sourceLineNo">037</span>/**<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * Overrides commands to make use of coprocessor where possible. Only supports actions taken against<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * Master and Region Server hosts.<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> */<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>@InterfaceAudience.Private<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>@SuppressWarnings("unused") // no way to test this without a distributed cluster.<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>public class CoprocClusterManager extends HBaseClusterManager {<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> private static final Logger LOG = LoggerFactory.getLogger(CoprocClusterManager.class);<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> private static final Set<ServiceType> supportedServices = buildSupportedServicesSet();<a name="line.45"></a> |
| <span class="sourceLineNo">046</span><a name="line.46"></a> |
| <span class="sourceLineNo">047</span> @Override<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> protected Pair<Integer, String> exec(String hostname, ServiceType service, String... cmd)<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> throws IOException {<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> if (!supportedServices.contains(service)) {<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> throw unsupportedServiceType(service);<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> }<a name="line.52"></a> |
| <span class="sourceLineNo">053</span><a name="line.53"></a> |
| <span class="sourceLineNo">054</span> // We only support actions vs. Master or Region Server processes. We're issuing those actions<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> // via the coprocessor that's running within those processes. Thus, there's no support for<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> // honoring the configured service user.<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> final String command = StringUtils.join(cmd, " ");<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> LOG.info("Executing remote command: {}, hostname:{}", command, hostname);<a name="line.58"></a> |
| <span class="sourceLineNo">059</span><a name="line.59"></a> |
| <span class="sourceLineNo">060</span> try (final AsyncConnection conn = ConnectionFactory.createAsyncConnection(getConf()).join()) {<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> final AsyncAdmin admin = conn.getAdmin();<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> final ShellExecRequest req =<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> ShellExecRequest.newBuilder().setCommand(command).setAwaitResponse(false).build();<a name="line.63"></a> |
| <span class="sourceLineNo">064</span><a name="line.64"></a> |
| <span class="sourceLineNo">065</span> final ShellExecResponse resp;<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> switch (service) {<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> case HBASE_MASTER:<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> // What happens if the intended action was killing a backup master? Right now we have<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> // no `RestartBackupMasterAction` so it's probably fine.<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> resp = masterExec(admin, req);<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> break;<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> case HBASE_REGIONSERVER:<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> final ServerName targetHost = resolveRegionServerName(admin, hostname);<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> resp = regionServerExec(admin, req, targetHost);<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> break;<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> default:<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> throw new RuntimeException("should not happen");<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> }<a name="line.78"></a> |
| <span class="sourceLineNo">079</span><a name="line.79"></a> |
| <span class="sourceLineNo">080</span> if (LOG.isDebugEnabled()) {<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> LOG.debug("Executed remote command: {}, exit code:{} , output:{}", command,<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> resp.getExitCode(), resp.getStdout());<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> } else {<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> LOG.info("Executed remote command: {}, exit code:{}", command, resp.getExitCode());<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> }<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> return new Pair<>(resp.getExitCode(), resp.getStdout());<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> }<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> }<a name="line.88"></a> |
| <span class="sourceLineNo">089</span><a name="line.89"></a> |
| <span class="sourceLineNo">090</span> private static Set<ServiceType> buildSupportedServicesSet() {<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> final Set<ServiceType> set = new HashSet<>();<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> set.add(ServiceType.HBASE_MASTER);<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> set.add(ServiceType.HBASE_REGIONSERVER);<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> return Collections.unmodifiableSet(set);<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> }<a name="line.95"></a> |
| <span class="sourceLineNo">096</span><a name="line.96"></a> |
| <span class="sourceLineNo">097</span> private static ShellExecResponse masterExec(final AsyncAdmin admin, final ShellExecRequest req) {<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> // TODO: Admin API provides no means of sending exec to a backup master.<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> return admin.<ShellExecService.Stub, ShellExecResponse> coprocessorService(<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> ShellExecService::newStub,<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> (stub, controller, callback) -> stub.shellExec(controller, req, callback)).join();<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> }<a name="line.102"></a> |
| <span class="sourceLineNo">103</span><a name="line.103"></a> |
| <span class="sourceLineNo">104</span> private static ShellExecResponse regionServerExec(final AsyncAdmin admin,<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> final ShellExecRequest req, final ServerName targetHost) {<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> return admin.<ShellExecService.Stub, ShellExecResponse> coprocessorService(<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> ShellExecService::newStub,<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> (stub, controller, callback) -> stub.shellExec(controller, req, callback), targetHost).join();<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> }<a name="line.109"></a> |
| <span class="sourceLineNo">110</span><a name="line.110"></a> |
| <span class="sourceLineNo">111</span> private static ServerName resolveRegionServerName(final AsyncAdmin admin, final String hostname) {<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> return admin.getRegionServers()<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> .thenApply(<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> names -> names.stream().filter(sn -> Objects.equals(sn.getHostname(), hostname)).findAny())<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> .join().orElseThrow(() -> serverNotFound(hostname));<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> }<a name="line.116"></a> |
| <span class="sourceLineNo">117</span><a name="line.117"></a> |
| <span class="sourceLineNo">118</span> private static RuntimeException serverNotFound(final String hostname) {<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> return new RuntimeException(<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> String.format("Did not find %s amongst the servers known to the client.", hostname));<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> }<a name="line.121"></a> |
| <span class="sourceLineNo">122</span><a name="line.122"></a> |
| <span class="sourceLineNo">123</span> private static RuntimeException unsupportedServiceType(final ServiceType serviceType) {<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> return new RuntimeException(<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> String.format("Unable to service request for service=%s", serviceType));<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> }<a name="line.126"></a> |
| <span class="sourceLineNo">127</span>}<a name="line.127"></a> |
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