Example usage for org.apache.commons.lang3 StringUtils isAnyEmpty

Introduction

In this page you can find the example usage for org.apache.commons.lang3 StringUtils isAnyEmpty.

Prototype

public static boolean isAnyEmpty(final CharSequence... css) 

Source Link

Document

Checks if any one of the CharSequences are empty ("") or null.

 StringUtils.isAnyEmpty(null)             = true StringUtils.isAnyEmpty(null, "foo")      = true StringUtils.isAnyEmpty("", "bar")        = true StringUtils.isAnyEmpty("bob", "")        = true StringUtils.isAnyEmpty("  bob  ", null)  = true StringUtils.isAnyEmpty(" ", "bar")       = false StringUtils.isAnyEmpty("foo", "bar")     = false 

Usage

From source file:org.apache.nifi.provenance.CryptoUtils.java

/**
 * Returns a map containing the key IDs and the parsed key from a key provider definition file.
 * The values in the file are decrypted using the master key provided. If the file is missing or empty,
 * cannot be read, or if no valid keys are read, a {@link KeyManagementException} will be thrown.
 *
 * @param filepath  the key definition file path
 * @param masterKey the master key used to decrypt each key definition
 * @return a Map of key IDs to SecretKeys
 * @throws KeyManagementException if the file is missing or invalid
 *///from w  w w  . j  a  v  a 2 s. c o m
public static Map<String, SecretKey> readKeys(String filepath, SecretKey masterKey)
        throws KeyManagementException {
    Map<String, SecretKey> keys = new HashMap<>();

    if (StringUtils.isBlank(filepath)) {
        throw new KeyManagementException("The key provider file is not present and readable");
    }
    File file = new File(filepath);
    if (!file.exists() || !file.canRead()) {
        throw new KeyManagementException("The key provider file is not present and readable");
    }

    try (BufferedReader br = new BufferedReader(new FileReader(file))) {
        AESKeyedCipherProvider masterCipherProvider = new AESKeyedCipherProvider();

        String line;
        int l = 1;
        while ((line = br.readLine()) != null) {
            String[] components = line.split("=", 2);
            if (components.length != 2 || StringUtils.isAnyEmpty(components)) {
                logger.warn("Line " + l + " is not properly formatted -- keyId=Base64EncodedKey...");
            }
            String keyId = components[0];
            if (StringUtils.isNotEmpty(keyId)) {
                try {
                    byte[] base64Bytes = Base64.getDecoder().decode(components[1]);
                    byte[] ivBytes = Arrays.copyOfRange(base64Bytes, 0, IV_LENGTH);

                    Cipher masterCipher = null;
                    try {
                        masterCipher = masterCipherProvider.getCipher(EncryptionMethod.AES_GCM, masterKey,
                                ivBytes, false);
                    } catch (Exception e) {
                        throw new KeyManagementException(
                                "Error building cipher to decrypt FileBaseKeyProvider definition at "
                                        + filepath,
                                e);
                    }
                    byte[] individualKeyBytes = masterCipher
                            .doFinal(Arrays.copyOfRange(base64Bytes, IV_LENGTH, base64Bytes.length));

                    SecretKey key = new SecretKeySpec(individualKeyBytes, "AES");
                    logger.debug("Read and decrypted key for " + keyId);
                    if (keys.containsKey(keyId)) {
                        logger.warn("Multiple key values defined for " + keyId + " -- using most recent value");
                    }
                    keys.put(keyId, key);
                } catch (IllegalArgumentException e) {
                    logger.error("Encountered an error decoding Base64 for " + keyId + ": "
                            + e.getLocalizedMessage());
                } catch (BadPaddingException | IllegalBlockSizeException e) {
                    logger.error("Encountered an error decrypting key for " + keyId + ": "
                            + e.getLocalizedMessage());
                }
            }
            l++;
        }

        if (keys.isEmpty()) {
            throw new KeyManagementException("The provided file contained no valid keys");
        }

        logger.info("Read " + keys.size() + " keys from FileBasedKeyProvider " + filepath);
        return keys;
    } catch (IOException e) {
        throw new KeyManagementException("Error reading FileBasedKeyProvider definition at " + filepath, e);
    }

}

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From source file:org.apache.nifi.security.kms.CryptoUtils.java

/**
 * Returns a map containing the key IDs and the parsed key from a key provider definition file.
 * The values in the file are decrypted using the master key provided. If the file is missing or empty,
 * cannot be read, or if no valid keys are read, a {@link KeyManagementException} will be thrown.
 *
 * @param filepath  the key definition file path
 * @param masterKey the master key used to decrypt each key definition
 * @return a Map of key IDs to SecretKeys
 * @throws KeyManagementException if the file is missing or invalid
 *///from   w w w  .  j  av  a  2s .  co  m
public static Map<String, SecretKey> readKeys(String filepath, SecretKey masterKey)
        throws KeyManagementException {
    Map<String, SecretKey> keys = new HashMap<>();

    if (StringUtils.isBlank(filepath)) {
        throw new KeyManagementException("The key provider file is not present and readable");
    }
    if (masterKey == null) {
        throw new KeyManagementException("The master key must be provided to decrypt the individual keys");
    }

    File file = new File(filepath);
    if (!file.exists() || !file.canRead()) {
        throw new KeyManagementException("The key provider file is not present and readable");
    }

    try (BufferedReader br = new BufferedReader(new FileReader(file))) {
        AESKeyedCipherProvider masterCipherProvider = new AESKeyedCipherProvider();

        String line;
        int l = 1;
        while ((line = br.readLine()) != null) {
            String[] components = line.split("=", 2);
            if (components.length != 2 || StringUtils.isAnyEmpty(components)) {
                logger.warn("Line " + l + " is not properly formatted -- keyId=Base64EncodedKey...");
            }
            String keyId = components[0];
            if (StringUtils.isNotEmpty(keyId)) {
                try {
                    byte[] base64Bytes = Base64.getDecoder().decode(components[1]);
                    byte[] ivBytes = Arrays.copyOfRange(base64Bytes, 0, IV_LENGTH);

                    Cipher masterCipher = null;
                    try {
                        masterCipher = masterCipherProvider.getCipher(EncryptionMethod.AES_GCM, masterKey,
                                ivBytes, false);
                    } catch (Exception e) {
                        throw new KeyManagementException(
                                "Error building cipher to decrypt FileBaseKeyProvider definition at "
                                        + filepath,
                                e);
                    }
                    byte[] individualKeyBytes = masterCipher
                            .doFinal(Arrays.copyOfRange(base64Bytes, IV_LENGTH, base64Bytes.length));

                    SecretKey key = new SecretKeySpec(individualKeyBytes, "AES");
                    logger.debug("Read and decrypted key for " + keyId);
                    if (keys.containsKey(keyId)) {
                        logger.warn("Multiple key values defined for " + keyId + " -- using most recent value");
                    }
                    keys.put(keyId, key);
                } catch (IllegalArgumentException e) {
                    logger.error("Encountered an error decoding Base64 for " + keyId + ": "
                            + e.getLocalizedMessage());
                } catch (BadPaddingException | IllegalBlockSizeException e) {
                    logger.error("Encountered an error decrypting key for " + keyId + ": "
                            + e.getLocalizedMessage());
                }
            }
            l++;
        }

        if (keys.isEmpty()) {
            throw new KeyManagementException("The provided file contained no valid keys");
        }

        logger.info("Read " + keys.size() + " keys from FileBasedKeyProvider " + filepath);
        return keys;
    } catch (IOException e) {
        throw new KeyManagementException("Error reading FileBasedKeyProvider definition at " + filepath, e);
    }

}

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From source file:org.apache.zeppelin.shell.TerminalInterpreter.java

@Override
protected boolean isKerboseEnabled() {
    if (!StringUtils.isAnyEmpty(getProperty("zeppelin.shell.auth.type"))
            && getProperty("zeppelin.shell.auth.type").equalsIgnoreCase("kerberos")) {
        return true;
    }//from   ww w  .  ja  v a  2 s.com
    return false;
}

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