Apache ZooKeeper Server Source Code

Apache ZooKeeper is an open-source server which enables highly reliable distributed coordination.

Apache ZooKeeper Server Source Code files are provided in the source packge (apache-zookeeper-3.7.0.tar.gz). You can download it at Apache ZooKeeper Website.

You can also browse Apache ZooKeeper Server Source Code below:

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 * 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,
 * See the License for the specific language governing permissions and
 * limitations under the License.

package org.apache.zookeeper.common;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.GeneralSecurityException;
import java.security.KeyStore;
import java.security.KeyStoreException;

 * Base class for instances of {@link KeyStoreLoader} which load the key/trust
 * stores from files on a filesystem using standard {@link KeyStore} types like
 * JKS or PKCS12.
abstract class StandardTypeFileKeyStoreLoader extends FileKeyStoreLoader {

    private static final char[] EMPTY_CHAR_ARRAY = new char[0];

    protected final SupportedStandardKeyFormat format;

    protected enum SupportedStandardKeyFormat {
        JKS, PKCS12, BCFKS

    StandardTypeFileKeyStoreLoader(String keyStorePath, String trustStorePath, String keyStorePassword,
        String trustStorePassword, SupportedStandardKeyFormat format) {
        super(keyStorePath, trustStorePath, keyStorePassword, trustStorePassword);
        this.format = format;

    public KeyStore loadKeyStore() throws IOException, GeneralSecurityException {
        try (InputStream inputStream = new FileInputStream(new File(keyStorePath))) {
            KeyStore ks = keyStoreInstance();
            ks.load(inputStream, passwordStringToCharArray(keyStorePassword));
            return ks;

    public KeyStore loadTrustStore() throws IOException, GeneralSecurityException {
        try (InputStream inputStream = new FileInputStream(new File(trustStorePath))) {
            KeyStore ts = keyStoreInstance();
            ts.load(inputStream, passwordStringToCharArray(trustStorePassword));
            return ts;

    private KeyStore keyStoreInstance() throws KeyStoreException {
        return KeyStore.getInstance(format.name());

    private static char[] passwordStringToCharArray(String password) {
        return password == null ? EMPTY_CHAR_ARRAY : password.toCharArray();




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2018-10-18, 28938👍, 1💬