// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.config.server.http;

import ai.vespa.util.http.hc5.VespaHttpClientBuilder;
import com.yahoo.container.jdisc.HttpResponse;
import com.yahoo.yolean.Exceptions;
import org.apache.hc.client5.http.classic.methods.HttpGet;
import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.charset.StandardCharsets;
import java.time.Duration;
import java.time.Instant;
import java.util.Optional;

/**
 * @author olaaun
 */
public class LogRetriever {

    private final CloseableHttpClient httpClient = VespaHttpClientBuilder.create().build();

    public HttpResponse getLogs(String logServerUri, Optional<Instant> deployTime) {
        HttpGet get = new HttpGet(logServerUri);
        try {
            return new ProxyResponse(httpClient.execute(get));
        } catch (IOException e) {
            // It takes some time before nodes are up after first-time deployment, return empty log for up to 1 minute
            // if getting logs fail
            if (deployTime.isPresent() && Instant.now().isAfter(deployTime.get().minus(Duration.ofMinutes(1))))
                return new HttpResponse(200) {
                    @Override
                    public void render(OutputStream outputStream) throws IOException {
                        outputStream.write("".getBytes(StandardCharsets.UTF_8));
                    }
                };
            return HttpErrorResponse.internalServerError("Failed to get logs: " + Exceptions.toMessageString(e));
        }
    }

}

@@ -1197,13 +1197,14 @@
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@@ -1217,19 +1217,18 @@
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Update configserver/src/main/java/com/yahoo/vespa/config/server/http/LogRetriever.java