nifi-commons/nifi-repository-encryption/src/main/java/org/apache/nifi/repository/encryption/configuration/EncryptionMetadataHeader.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.nifi.repository.encryption.configuration;

/**
 * Encryption Metadata Header indicator used when writing records
 */
public enum EncryptionMetadataHeader {
    /**
     * Content Repository Header
     */
    CONTENT(new byte[]{0x00, 0x00}),

    /**
     * Flow File Repository Header
     */
    FLOWFILE(new byte[]{}),

    /**
     * Provenance Repository Header
     */
    PROVENANCE(new byte[]{0x01});

    private byte[] header;

    EncryptionMetadataHeader(final byte[] header) {
        this.header = header;
    }

    public byte[] getHeader() {
        return header;
    }

    public int getLength() {
        return header.length;
    }
}