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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.container.jdisc.state;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.yahoo.vespa.defaults.Defaults;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.nio.file.NoSuchFileException;
import java.nio.file.Path;
import java.time.Instant;
import java.util.stream.Stream;
/**
* @author olaa
*/
public class CoredumpGatherer {
private static final ObjectMapper jsonMapper = new ObjectMapper();
private static final Path COREDUMP_PATH = Path.of(Defaults.getDefaults().underVespaHome("var/crash/processing"));
public static JsonNode gatherCoredumpMetrics(FileWrapper fileWrapper) {
int coredumps = getNumberOfCoredumps(fileWrapper);
ObjectNode packet = jsonMapper.createObjectNode();
packet.put("status_code", coredumps == 0 ? 0 : 1);
packet.put("status_msg", coredumps == 0 ? "OK" : String.format("Found %d coredump(s)", coredumps));
packet.put("timestamp", Instant.now().getEpochSecond());
packet.put("application", "system-coredumps-processing");
return packet;
}
private static int getNumberOfCoredumps(FileWrapper fileWrapper) {
try (Stream<Path> stream = fileWrapper.walkTree(COREDUMP_PATH)){
return (int) stream
.filter(fileWrapper::isRegularFile)
.count();
} catch (NoSuchFileException e) {
return 0;
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
}
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