org.trustedanalytics.cfbroker.store.zookeeper.service.utils.ZookeeperTestUtils.java Source code

Introduction

Here is the source code for org.trustedanalytics.cfbroker.store.zookeeper.service.utils.ZookeeperTestUtils.java

Source

/**
 * Copyright (c) 2015 Intel Corporation
 *
 * Licensed 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.trustedanalytics.cfbroker.store.zookeeper.service.utils;

import com.google.common.collect.ImmutableList;
import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.framework.CuratorFrameworkFactory;
import org.apache.curator.retry.RetryOneTime;
import org.apache.zookeeper.ZooDefs;
import org.apache.zookeeper.data.ACL;
import org.apache.zookeeper.data.Id;
import org.apache.zookeeper.data.Stat;
import org.springframework.security.crypto.codec.Base64;

import java.security.MessageDigest;
import java.util.List;
import java.util.Map;
import java.util.Set;

import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.nullValue;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.core.Is.is;

public class ZookeeperTestUtils {

    private ZookeeperTestUtils() {
    }

    private static CuratorFramework getNewTempClient(String connectionString) {
        CuratorFramework tempClient = CuratorFrameworkFactory.builder().connectString(connectionString)
                .retryPolicy(new RetryOneTime(100)).build();
        tempClient.start();
        return tempClient;
    }

    private static CuratorFramework getNewTempClient(ZookeeperCredentials credentials) {

        CuratorFramework tempClient = CuratorFrameworkFactory.builder()
                .connectString(credentials.getConnectionString()).retryPolicy(new RetryOneTime(100))
                .authorization("digest",
                        String.format("%s:%s", credentials.getUsername(), credentials.getPassword()).getBytes())
                .build();
        tempClient.start();
        return tempClient;
    }

    public static void createDir(ZookeeperCredentials credentials, String path) throws Exception {

        CuratorFramework tempClient = getNewTempClient(credentials.getConnectionString());

        MessageDigest md = MessageDigest.getInstance("SHA-1");
        byte[] authDigest = md
                .digest(String.format("%s:%s", credentials.getUsername(), credentials.getPassword()).getBytes());
        String authEncoded = new String(Base64.encode(authDigest));
        ImmutableList<ACL> acl = ImmutableList.of(new ACL(ZooDefs.Perms.ALL,
                new Id("digest", String.format("%s:%s", credentials.getUsername(), authEncoded))));

        tempClient.create().creatingParentsIfNeeded().withACL(acl).forPath(path);

        tempClient.close();
    }

    public static void deleteDir(ZookeeperCredentials credentials, String path) throws Exception {

        CuratorFramework tempClient = getNewTempClient(credentials);

        tempClient.delete().deletingChildrenIfNeeded().forPath(path);

        tempClient.close();
    }

    public static void saveBytesInZNode(ZookeeperCredentials credentials, String path, byte[] bytes)
            throws Exception {

        CuratorFramework tempClient = getNewTempClient(credentials);

        tempClient.create().creatingParentsIfNeeded().forPath(path, bytes);

        tempClient.close();
    }

    public static void saveChildrenZNodes(ZookeeperCredentials credentials, String path,
            Map<String, byte[]> childrenToCreate) throws Exception {

        CuratorFramework tempClient = getNewTempClient(credentials);
        for (Map.Entry<String, byte[]> child : childrenToCreate.entrySet()) {
            tempClient.create().creatingParentsIfNeeded().forPath(path + "/" + child.getKey(), child.getValue());
        }

        tempClient.close();
    }

    public static void assertZNodeEquals(ZookeeperCredentials credentials, String path, byte[] expected)
            throws Exception {

        CuratorFramework tempClient = getNewTempClient(credentials);

        byte[] actual = tempClient.getData().forPath(path);
        assertThat(expected, equalTo(actual));

        tempClient.close();
    }

    public static void assertZNodesAclEquals(ZookeeperCredentials credentials, String pathA, String pathB)
            throws Exception {

        CuratorFramework tempClient = getNewTempClient(credentials);

        final List<ACL> aclA = tempClient.getACL().forPath(pathA);
        final List<ACL> aclB = tempClient.getACL().forPath(pathB);

        assertThat(aclA, equalTo(aclB));
    }

    public static void assertZNodeNotExist(ZookeeperCredentials credentials, String path) throws Exception {

        CuratorFramework tempClient = getNewTempClient(credentials);

        Stat stat = tempClient.checkExists().forPath(path);
        assertThat(stat, is(nullValue()));

        tempClient.close();
    }

    public static class ZookeeperCredentials {
        private String connectionString;
        private String username;
        private String password;

        public ZookeeperCredentials(String connectionString, String username, String password) {
            this.connectionString = connectionString;
            this.username = username;
            this.password = password;
        }

        public String getConnectionString() {
            return connectionString;
        }

        public String getUsername() {
            return username;
        }

        public String getPassword() {
            return password;
        }
    }
}