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// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.container.handler;
import com.google.inject.Inject;
import com.yahoo.container.core.LogHandlerConfig;
import com.yahoo.container.jdisc.HttpRequest;
import com.yahoo.container.jdisc.HttpResponse;
import com.yahoo.container.jdisc.ThreadedHttpRequestHandler;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.time.Instant;
import java.util.Optional;
import java.util.concurrent.Executor;
public class LogHandler extends ThreadedHttpRequestHandler {
private final LogReader logReader;
@Inject
public LogHandler(Executor executor, LogHandlerConfig config) {
this(executor, new LogReader(config.logDirectory(), config.logPattern()));
}
LogHandler(Executor executor, LogReader logReader) {
super(executor);
this.logReader = logReader;
}
@Override
public HttpResponse handle(HttpRequest request) {
JSONObject responseJSON = new JSONObject();
Instant earliestLogThreshold = Optional.ofNullable(request.getProperty("from"))
.map(Long::valueOf).map(Instant::ofEpochMilli).orElse(Instant.MIN);
Instant latestLogThreshold = Optional.ofNullable(request.getProperty("to"))
.map(Long::valueOf).map(Instant::ofEpochMilli).orElseGet(Instant::now);
try {
JSONObject logJson = logReader.readLogs(earliestLogThreshold, latestLogThreshold);
responseJSON.put("logs", logJson);
} catch (IOException | JSONException e) {
return new HttpResponse(404) {
@Override
public void render(OutputStream outputStream) {}
};
}
return new HttpResponse(200) {
@Override
public void render(OutputStream outputStream) throws IOException {
OutputStreamWriter outputStreamWriter = new OutputStreamWriter(outputStream);
outputStreamWriter.write(responseJSON.toString());
outputStreamWriter.close();
}
};
}
}
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