Example usage for org.springframework.vault.authentication Sha256 toHexString

Introduction

In this page you can find the example usage for org.springframework.vault.authentication Sha256 toHexString.

Prototype

static String toHexString(byte[] bytes) 

Source Link

Usage

From source file:org.springframework.vault.authentication.MacAddressUserId.java

@Override
public String createUserId() {

    try {/*from w  w w . j a va2 s. co  m*/

        NetworkInterface networkInterface = null;
        List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());

        if (StringUtils.hasText(networkInterfaceHint)) {

            try {
                networkInterface = getNetworkInterface(Integer.parseInt(networkInterfaceHint), interfaces);
            } catch (NumberFormatException e) {
                networkInterface = getNetworkInterface((networkInterfaceHint), interfaces);
            }
        }

        if (networkInterface == null) {

            if (StringUtils.hasText(networkInterfaceHint)) {
                log.warn(String.format("Did not find a NetworkInterface applying hint %s",
                        networkInterfaceHint));
            }

            InetAddress localHost = InetAddress.getLocalHost();
            networkInterface = NetworkInterface.getByInetAddress(localHost);

            if (networkInterface == null) {
                throw new IllegalStateException(
                        String.format("Cannot determine NetworkInterface for %s", localHost));
            }
        }

        byte[] mac = networkInterface.getHardwareAddress();
        if (mac == null) {
            throw new IllegalStateException(
                    String.format("Network interface %s has no hardware address", networkInterface.getName()));
        }

        return Sha256.toSha256(Sha256.toHexString(mac));
    } catch (IOException e) {
        throw new IllegalStateException(e);
    }
}

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