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#298 Saturn-Console support dump executor threads
watch the dump node; refactor code with #295
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saturn-core/src/main/java/com/vip/saturn/job/executor/RestartAndDumpService.java
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| @@ -0,0 +1,185 @@ | ||
| package com.vip.saturn.job.executor; | ||
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| import com.vip.saturn.job.exception.SaturnJobException; | ||
| import com.vip.saturn.job.reg.base.CoordinatorRegistryCenter; | ||
| import com.vip.saturn.job.threads.SaturnThreadFactory; | ||
| import com.vip.saturn.job.utils.SystemEnvProperties; | ||
| import org.apache.commons.lang3.StringUtils; | ||
| import org.apache.curator.framework.CuratorFramework; | ||
| import org.apache.curator.framework.recipes.cache.NodeCache; | ||
| import org.apache.curator.framework.recipes.cache.NodeCacheListener; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| import java.io.File; | ||
| import java.util.concurrent.ExecutorService; | ||
| import java.util.concurrent.Executors; | ||
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| /** | ||
| * @author hebelala | ||
| */ | ||
| public class RestartAndDumpService { | ||
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| private static final Logger LOGGER = LoggerFactory.getLogger(RestartAndDumpService.class); | ||
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| private String executorName; | ||
| private CoordinatorRegistryCenter coordinatorRegistryCenter; | ||
| private CuratorFramework curatorFramework; | ||
| private File prgDir; | ||
| private NodeCache restartNC; | ||
| private ExecutorService restartES; | ||
| private NodeCache dumpNC; | ||
| private ExecutorService dumpES; | ||
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| public RestartAndDumpService(String executorName, CoordinatorRegistryCenter coordinatorRegistryCenter) { | ||
| this.executorName = executorName; | ||
| this.coordinatorRegistryCenter = coordinatorRegistryCenter; | ||
| this.curatorFramework = (CuratorFramework) coordinatorRegistryCenter.getRawClient(); | ||
| } | ||
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| public void start() throws Exception { | ||
| if (!SystemEnvProperties.VIP_SATURN_ENABLE_EXEC_SCRIPT) { | ||
| LOGGER.info("The RestartAndDumpService is disabled"); | ||
| return; | ||
| } | ||
| validateFile(SystemEnvProperties.NAME_VIP_SATURN_PRG, SystemEnvProperties.VIP_SATURN_PRG); | ||
| validateConfigured(SystemEnvProperties.NAME_VIP_SATURN_LOG_OUTFILE, SystemEnvProperties.VIP_SATURN_LOG_OUTFILE); | ||
| prgDir = new File(SystemEnvProperties.NAME_VIP_SATURN_PRG).getParentFile(); | ||
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| initRestart(); | ||
| initDump(); | ||
| } | ||
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| private void validateFile(String name, String value) throws SaturnJobException { | ||
| validateConfigured(name, value); | ||
| File file = new File(value); | ||
| if (!file.exists()) { | ||
| throw new SaturnJobException(value + " is not existing"); | ||
| } | ||
| if (!file.isFile()) { | ||
| throw new SaturnJobException(value + " is not file"); | ||
| } | ||
| } | ||
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| private void validateConfigured(String name, String value) throws SaturnJobException { | ||
| if (StringUtils.isBlank(value)) { | ||
| throw new SaturnJobException(name + " is not configured"); | ||
| } | ||
| LOGGER.info("The {} is configured as {}", name, value); | ||
| } | ||
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| private void initRestart() throws Exception { | ||
| restartES = Executors.newSingleThreadExecutor(new SaturnThreadFactory(executorName + "-restart-watcher-thread", false)); | ||
| // Remove the restart node, before add watcher that watches the create and update event | ||
| String nodePath = SaturnExecutorsNode.EXECUTORS_ROOT + "/" + executorName + "/restart"; | ||
| coordinatorRegistryCenter.remove(nodePath); | ||
| restartNC = new NodeCache(curatorFramework, nodePath); | ||
| restartNC.getListenable().addListener(new NodeCacheListener() { | ||
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| @Override | ||
| public void nodeChanged() throws Exception { | ||
| // Watch create, update event | ||
| if (restartNC.getCurrentData() != null) { | ||
| LOGGER.info("The executor {} restart event is received", executorName); | ||
| restartES.execute(new Runnable() { | ||
| @Override | ||
| public void run() { | ||
| try { | ||
| // The apache's Executor maybe destroy process on some conditions, | ||
| // and don't provide the api for redirect process's streams to file. | ||
| // It's not expected, so I use the original way. | ||
| LOGGER.info("Begin to execute restart script"); | ||
| String command = "chmod +x " + SystemEnvProperties.VIP_SATURN_PRG + ";" + SystemEnvProperties.VIP_SATURN_PRG + " restart"; | ||
| Process process = new ProcessBuilder() | ||
| .command("/bin/bash", "-c", command) | ||
| .directory(prgDir) | ||
| .redirectOutput(ProcessBuilder.Redirect.appendTo(new File(SystemEnvProperties.VIP_SATURN_LOG_OUTFILE))) | ||
| .redirectError(ProcessBuilder.Redirect.appendTo(new File(SystemEnvProperties.VIP_SATURN_LOG_OUTFILE))) | ||
| .start(); | ||
| int exit = process.waitFor(); | ||
| LOGGER.info("Executed restart script, the exit value {} is returned", exit); | ||
| } catch (InterruptedException e) { | ||
| LOGGER.info("Restart thread is interrupted"); | ||
| } catch (Exception e) { | ||
| LOGGER.error("Execute restart script error", e); | ||
| } | ||
| } | ||
| }); | ||
| } | ||
| } | ||
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| }); | ||
| // Start, with not buildInitial. | ||
| // The initial data is null, so the create event will be triggered firstly. | ||
| restartNC.start(false); | ||
| } | ||
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| private void initDump() throws Exception { | ||
| dumpES = Executors.newSingleThreadExecutor(new SaturnThreadFactory(executorName + "-dump-watcher-thread", false)); | ||
| final String nodePath = SaturnExecutorsNode.EXECUTORS_ROOT + "/" + executorName + "/dump"; | ||
| coordinatorRegistryCenter.remove(nodePath); | ||
| dumpNC = new NodeCache(curatorFramework, nodePath); | ||
| dumpNC.getListenable().addListener(new NodeCacheListener() { | ||
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| @Override | ||
| public void nodeChanged() throws Exception { | ||
| // Watch create, update event | ||
| if (dumpNC.getCurrentData() != null) { | ||
| LOGGER.info("The executor {} dump event is received", executorName); | ||
| dumpES.execute(new Runnable() { | ||
| @Override | ||
| public void run() { | ||
| try { | ||
| // dump threads and gc | ||
| LOGGER.info("Begin to execute script dump"); | ||
| String command = "chmod +x " + SystemEnvProperties.VIP_SATURN_PRG + ";" + SystemEnvProperties.VIP_SATURN_PRG + " dump"; | ||
| Process process = new ProcessBuilder() | ||
| .command("/bin/bash", "-c", command) | ||
| .directory(prgDir) | ||
| .redirectOutput(ProcessBuilder.Redirect.appendTo(new File(SystemEnvProperties.VIP_SATURN_LOG_OUTFILE))) | ||
| .redirectError(ProcessBuilder.Redirect.appendTo(new File(SystemEnvProperties.VIP_SATURN_LOG_OUTFILE))) | ||
| .start(); | ||
| int exit = process.waitFor(); | ||
| LOGGER.info("Execute script dump done, the exit value {} is returned", exit); | ||
| } catch (InterruptedException e) { | ||
| LOGGER.info("Dump thread is interrupted"); | ||
| } catch (Exception e) { | ||
| LOGGER.error(e.getMessage(), e); | ||
| } finally { | ||
| coordinatorRegistryCenter.remove(nodePath); | ||
| } | ||
| } | ||
| }); | ||
| } | ||
| } | ||
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| }); | ||
| dumpNC.start(false); | ||
| } | ||
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| public void stop() { | ||
| try { | ||
| if (restartNC != null) { | ||
| restartNC.close(); | ||
| } | ||
| } catch (Exception e) { | ||
| LOGGER.error(e.getMessage(), e); | ||
| } | ||
| if (restartES != null) { | ||
| restartES.shutdownNow(); | ||
| } | ||
| try { | ||
| if (dumpNC != null) { | ||
| dumpNC.close(); | ||
| } | ||
| } catch (Exception e) { | ||
| LOGGER.error(e.getMessage(), e); | ||
| } | ||
| if (dumpES != null) { | ||
| dumpES.shutdownNow(); | ||
| } | ||
| } | ||
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| } |
135 changes: 0 additions & 135 deletions
135
saturn-core/src/main/java/com/vip/saturn/job/executor/RestartExecutorService.java
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