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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.node.maintainer;
import com.yahoo.log.LogSetup;
import com.yahoo.slime.ArrayTraverser;
import com.yahoo.slime.Inspector;
import com.yahoo.slime.Type;
import com.yahoo.system.ProcessExecuter;
import com.yahoo.vespa.config.SlimeUtils;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.impl.client.HttpClientBuilder;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.time.Duration;
import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.atomic.AtomicInteger;
/**
* @author freva
*/
public class Maintainer {
private static final CoreCollector coreCollector = new CoreCollector(new ProcessExecuter());
private static final HttpClient httpClient = createHttpClient(Duration.ofSeconds(5));
public static void main(String[] args) {
LogSetup.initVespaLogging("node-maintainer");
if (args.length != 1) {
throw new RuntimeException("Expected only 1 argument - a JSON list of maintainer jobs to execute");
}
Inspector object = SlimeUtils.jsonToSlime(args[0].getBytes()).get();
if (object.type() != Type.ARRAY) {
throw new IllegalArgumentException("Expected a list of maintainer jobs to execute");
}
// Variable must be effectively final to be used in lambda expression
AtomicInteger numberOfJobsFailed = new AtomicInteger(0);
object.traverse((ArrayTraverser) (int i, Inspector item) -> {
try {
String type = getFieldOrFail(item, "type").asString();
Inspector arguments = getFieldOrFail(item, "arguments");
parseMaintenanceJob(type, arguments);
} catch (Exception e) {
System.err.println("Failed executing job: " + item.toString());
e.printStackTrace();
numberOfJobsFailed.incrementAndGet();
}
});
if (numberOfJobsFailed.get() > 0) {
System.err.println(numberOfJobsFailed.get() + " of jobs has failed");
System.exit(1);
}
}
private static void parseMaintenanceJob(String type, Inspector arguments) {
if (arguments.type() != Type.OBJECT) {
throw new IllegalArgumentException("Expected a 'arguments' to be an object");
}
switch (type) {
case "delete-files":
parseDeleteFilesJob(arguments);
break;
case "delete-directories":
parseDeleteDirectoriesJob(arguments);
break;
case "recursive-delete":
parseRecursiveDelete(arguments);
break;
case "move-files":
parseMoveFiles(arguments);
break;
case "handle-core-dumps":
parseHandleCoreDumps(arguments);
break;
default:
throw new IllegalArgumentException("Unknown job: " + type);
}
}
private static void parseDeleteFilesJob(Inspector arguments) {
Path basePath = Paths.get(getFieldOrFail(arguments, "basePath").asString());
Duration maxAge = Duration.ofSeconds(getFieldOrFail(arguments, "maxAgeSeconds").asLong());
Optional<String> fileNameRegex = SlimeUtils.optionalString(arguments.field("fileNameRegex"));
boolean recursive = getFieldOrFail(arguments, "recursive").asBool();
try {
FileHelper.deleteFiles(basePath, maxAge, fileNameRegex, recursive);
} catch (IOException e) {
throw new RuntimeException("Failed deleting files under " + basePath.toAbsolutePath() +
fileNameRegex.map(regex -> ", matching '" + regex + "'").orElse("") +
", " + (recursive ? "" : "not ") + "recursively" +
" and older than " + maxAge, e);
}
}
private static void parseDeleteDirectoriesJob(Inspector arguments) {
Path basePath = Paths.get(getFieldOrFail(arguments, "basePath").asString());
Duration maxAge = Duration.ofSeconds(getFieldOrFail(arguments, "maxAgeSeconds").asLong());
Optional<String> dirNameRegex = SlimeUtils.optionalString(arguments.field("dirNameRegex"));
try {
FileHelper.deleteDirectories(basePath, maxAge, dirNameRegex);
} catch (IOException e) {
throw new RuntimeException("Failed deleting directories under " + basePath.toAbsolutePath() +
dirNameRegex.map(regex -> ", matching '" + regex + "'").orElse("") +
" and older than " + maxAge, e);
}
}
private static void parseRecursiveDelete(Inspector arguments) {
Path basePath = Paths.get(getFieldOrFail(arguments, "path").asString());
try {
FileHelper.recursiveDelete(basePath);
} catch (IOException e) {
throw new RuntimeException("Failed deleting " + basePath.toAbsolutePath(), e);
}
}
private static void parseMoveFiles(Inspector arguments) {
Path from = Paths.get(getFieldOrFail(arguments, "from").asString());
Path to = Paths.get(getFieldOrFail(arguments, "to").asString());
try {
FileHelper.moveIfExists(from, to);
} catch (IOException e) {
throw new RuntimeException("Failed moving from " + from.toAbsolutePath() + ", to " + to.toAbsolutePath(), e);
}
}
private static void parseHandleCoreDumps(Inspector arguments) {
Path coredumpsPath = Paths.get(getFieldOrFail(arguments, "coredumpsPath").asString());
Path doneCoredumpsPath = Paths.get(getFieldOrFail(arguments, "doneCoredumpsPath").asString());
Map<String, Object> attributesMap = parseMap(arguments);
Optional<Path> installStatePath = SlimeUtils.optionalString(arguments.field("yinstStatePath")).map(Paths::get);
String feedEndpoint = getFieldOrFail(arguments, "feedEndpoint").asString();
try {
CoredumpHandler coredumpHandler = new CoredumpHandler(httpClient, coreCollector, coredumpsPath,
doneCoredumpsPath, attributesMap, installStatePath,
feedEndpoint);
coredumpHandler.processAll();
} catch (IOException e) {
throw new RuntimeException("Failed processing coredumps at " + coredumpsPath.toAbsolutePath() +
", moving fished dumps to " + doneCoredumpsPath.toAbsolutePath(), e);
}
}
private static Map<String, Object> parseMap(Inspector object) {
Map<String, Object> map = new HashMap<>();
getFieldOrFail(object, "attributes").traverse((String key, Inspector value) -> {
switch (value.type()) {
case BOOL:
map.put(key, value.asBool());
break;
case LONG:
map.put(key, value.asLong());
break;
case DOUBLE:
map.put(key, value.asDouble());
break;
case STRING:
map.put(key, value.asString());
break;
default:
throw new IllegalArgumentException("Invalid attribute for key '" + key + "', value " + value);
}
});
return map;
}
private static Inspector getFieldOrFail(Inspector object, String key) {
Inspector out = object.field(key);
if (out.type() == Type.NIX) {
throw new IllegalArgumentException("Key '" + key + "' was not found!");
}
return out;
}
private static HttpClient createHttpClient(Duration timeout) {
int timeoutInMillis = (int) timeout.toMillis();
return HttpClientBuilder.create()
.setUserAgent("node-maintainer")
.setDefaultRequestConfig(RequestConfig.custom()
.setConnectTimeout(timeoutInMillis)
.setConnectionRequestTimeout(timeoutInMillis)
.setSocketTimeout(timeoutInMillis)
.build())
.setMaxConnTotal(100)
.setMaxConnPerRoute(10)
.build();
}
}
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