Example usage for java.net HttpURLConnection getHeaderFieldLong

Introduction

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

Prototype

public long getHeaderFieldLong(String name, long Default) 

Source Link

Document

Returns the value of the named field parsed as a number.

Usage

From source file:io.webfolder.cdp.ChromiumDownloader.java

public Path download(ChromiumVersion version) {
    final Path destinationRoot = getChromiumPath(version);
    final Path executable = getExecutable(version);

    String url;//from w w  w .j a  va2  s. c o  m
    if (WINDOWS) {
        url = format("%s/Win_x64/%d/chrome-win.zip", DOWNLOAD_HOST, version.getRevision());
    } else if (LINUX) {
        url = format("%s/Linux_x64/%d/chrome-linux.zip", DOWNLOAD_HOST, version.getRevision());
    } else if (MAC) {
        url = format("%s/Mac/%d/chrome-mac.zip", DOWNLOAD_HOST, version.getRevision());
    } else {
        throw new CdpException("Unsupported OS found - " + OS);
    }

    try {
        URL u = new URL(url);
        HttpURLConnection conn = (HttpURLConnection) u.openConnection();
        conn.setRequestMethod("HEAD");
        conn.setConnectTimeout(TIMEOUT);
        conn.setReadTimeout(TIMEOUT);
        if (conn.getResponseCode() != 200) {
            throw new CdpException(conn.getResponseCode() + " - " + conn.getResponseMessage());
        }
        long contentLength = conn.getHeaderFieldLong("x-goog-stored-content-length", 0);
        String fileName = url.substring(url.lastIndexOf("/") + 1, url.lastIndexOf(".")) + "-r"
                + version.getRevision() + ".zip";
        Path archive = get(getProperty("java.io.tmpdir")).resolve(fileName);
        if (exists(archive) && contentLength != size(archive)) {
            delete(archive);
        }
        if (!exists(archive)) {
            logger.info("Downloading Chromium [revision=" + version.getRevision() + "] 0%");
            u = new URL(url);
            if (conn.getResponseCode() != 200) {
                throw new CdpException(conn.getResponseCode() + " - " + conn.getResponseMessage());
            }
            conn = (HttpURLConnection) u.openConnection();
            conn.setConnectTimeout(TIMEOUT);
            conn.setReadTimeout(TIMEOUT);
            Thread thread = null;
            AtomicBoolean halt = new AtomicBoolean(false);
            Runnable progress = () -> {
                try {
                    long fileSize = size(archive);
                    logger.info("Downloading Chromium [revision={}] {}%", version.getRevision(),
                            round((fileSize * 100L) / contentLength));
                } catch (IOException e) {
                    // ignore
                }
            };
            try (InputStream is = conn.getInputStream()) {
                logger.info("Download location: " + archive.toString());
                thread = new Thread(() -> {
                    while (true) {
                        try {
                            if (halt.get()) {
                                break;
                            }
                            progress.run();
                            sleep(1000);
                        } catch (Throwable e) {
                            // ignore
                        }
                    }
                });
                thread.setName("cdp4j");
                thread.setDaemon(true);
                thread.start();
                copy(conn.getInputStream(), archive);
            } finally {
                if (thread != null) {
                    progress.run();
                    halt.set(true);
                }
            }
        }
        logger.info("Extracting to: " + destinationRoot.toString());
        if (exists(archive)) {
            createDirectories(destinationRoot);
            unpack(archive.toFile(), destinationRoot.toFile());
        }

        if (!exists(executable) || !isExecutable(executable)) {
            throw new CdpException("Chromium executable not found: " + executable.toString());
        }

        if (!WINDOWS) {
            Set<PosixFilePermission> permissions = getPosixFilePermissions(executable);
            if (!permissions.contains(OWNER_EXECUTE)) {
                permissions.add(OWNER_EXECUTE);
                setPosixFilePermissions(executable, permissions);
            }
            if (!permissions.contains(GROUP_EXECUTE)) {
                permissions.add(GROUP_EXECUTE);
                setPosixFilePermissions(executable, permissions);
            }
        }
    } catch (IOException e) {
        throw new CdpException(e);
    }
    return executable;
}

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From source file:org.apache.tajo.storage.http.ExampleHttpFileTablespace.java

@Override
public long getTableVolume(TableDesc table, Optional<EvalNode> notUsed) {
    HttpURLConnection connection = null;

    try {//from   w ww  .  ja  v  a  2 s .  c o m
        connection = (HttpURLConnection) new URL(table.getUri().toASCIIString()).openConnection();
        connection.setRequestMethod("HEAD");
        connection.connect();
        return connection.getHeaderFieldLong(Names.CONTENT_LENGTH, -1);

    } catch (IOException e) {
        throw new TajoInternalError(e);

    } finally {
        if (connection != null) {
            connection.disconnect();
        }
    }
}

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