Example usage for java.net HttpURLConnection usingProxy

Introduction

In this page you can find the example usage for java.net HttpURLConnection usingProxy.

Prototype

public abstract boolean usingProxy();

Source Link

Document

Indicates if the connection is going through a proxy.

Usage

From source file:com.yahoo.druid.hadoop.HiveDatasourceInputFormat.java

private String getSegmentsToLoad(String dataSource, List<Interval> intervals, String overlordUrl)
        throws MalformedURLException {
    logger.info("CheckPost7");
    String urlStr = "http://" + overlordUrl + "/druid/indexer/v1/action";
    logger.info("Sending request to overlord at " + urlStr);

    Interval interval = intervals.get(0);

    String requestJson = getSegmentListUsedActionJson(interval.toString());
    logger.info("request json is " + requestJson);

    int numTries = 3;
    for (int trial = 0; trial < numTries; trial++) {
        try {/* w  ww  . jav  a  2 s .  c o m*/
            logger.info("attempt number {} to get list of segments from overlord", trial);
            Proxy proxy = new Proxy(Proxy.Type.HTTP,
                    new InetSocketAddress("httpproxy-prod.blue.ygrid.yahoo.com", 4080));
            URL url = new URL(String.format("%s/druid/coordinator/v1/metadata/datasources/%s/segments?full",
                    overlordUrl, dataSource));
            //new URL(urlStr);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection(proxy);
            conn.setRequestMethod("POST");
            conn.setRequestProperty("content-type", "application/json");
            conn.setRequestProperty("Accept", "*/*");
            conn.setUseCaches(false);
            conn.setDoOutput(true);
            conn.setConnectTimeout(60000);
            conn.usingProxy();
            OutputStream out = conn.getOutputStream();
            out.write(requestJson.getBytes());
            out.close();
            int responseCode = conn.getResponseCode();
            if (responseCode == 200) {
                return IOUtils.toString(conn.getInputStream());
            } else {
                logger.warn(
                        "Attempt Failed to get list of segments from overlord. response code [%s] , response [%s]",
                        responseCode, IOUtils.toString(conn.getInputStream()));
            }
        } catch (Exception ex) {
            logger.warn("Exception in getting list of segments from overlord", ex);
        }

        try {
            Thread.sleep(5000); //wait before next trial
        } catch (InterruptedException ex) {
            Throwables.propagate(ex);
        }
    }

    throw new RuntimeException(
            String.format("failed to find list of segments, dataSource[%s], interval[%s], overlord[%s]",
                    dataSource, interval, overlordUrl));
}

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