org.openqa.grid.web.servlet.NodeW3CStatusServlet Maven / Gradle / Ivy

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package org.openqa.grid.web.servlet;

import static com.google.common.net.MediaType.JSON_UTF_8;
import static java.net.HttpURLConnection.HTTP_OK;
import static java.nio.charset.StandardCharsets.UTF_8;
import static org.openqa.selenium.remote.ErrorCodes.SUCCESS;

import com.google.common.collect.ImmutableMap;

import org.openqa.selenium.internal.BuildInfo;
import org.openqa.selenium.remote.BeanToJsonConverter;

import java.io.IOException;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class NodeW3CStatusServlet extends HttpServlet {

  @Override
  protected void doGet(HttpServletRequest req, HttpServletResponse resp)
      throws ServletException, IOException {

    ImmutableMap.Builder value = ImmutableMap.builder();

    // W3C spec
    value.put("ready", true);
    value.put("message", "Node is running");

    BuildInfo buildInfo = new BuildInfo();
    value.put("build", ImmutableMap.of(
        // We need to fix the BuildInfo to properly fill out these values.
        "revision", buildInfo.getBuildRevision(),
        "time", buildInfo.getBuildTime(),
        "version", buildInfo.getReleaseLabel()));

    value.put("os", ImmutableMap.of(
        "arch", System.getProperty("os.arch"),
        "name", System.getProperty("os.name"),
        "version", System.getProperty("os.version")));

    value.put("java", ImmutableMap.of("version", System.getProperty("java.version")));

    Map payloadObj = ImmutableMap.of(
        "status", SUCCESS,
        "value", value.build());

    // Write out a minimal W3C status response.
    byte[] payload = new BeanToJsonConverter().convert(payloadObj).getBytes(UTF_8);

    resp.setStatus(HTTP_OK);
    resp.setHeader("Content-Type", JSON_UTF_8.toString());
    resp.setHeader("Content-Length", String.valueOf(payload.length));

    try (ServletOutputStream out = resp.getOutputStream()) {
      out.write(payload);
    }

  }
}