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Add SSL Cassandra support #1466

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Add SSL Cassandra support #1466

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57 changes: 54 additions & 3 deletions cassandra/src/main/java/org/apache/zeppelin/cassandra/CassandraInterpreter.java
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@
package org.apache.zeppelin.cassandra;

import com.datastax.driver.core.Cluster;
import com.datastax.driver.core.JdkSSLOptions;
import com.datastax.driver.core.ProtocolOptions.Compression;
import com.datastax.driver.core.Session;
import org.apache.zeppelin.interpreter.Interpreter;
Expand All @@ -29,6 +30,12 @@
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManagerFactory;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.security.KeyStore;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
Expand Down Expand Up @@ -106,6 +113,12 @@ public class CassandraInterpreter extends Interpreter {
"cassandra.socket.soLinger";
public static final String CASSANDRA_SOCKET_TCP_NO_DELAY =
"cassandra.socket.tcp.no_delay";
public static final String CASSANDRA_WITH_SSL =
"cassandra.ssl.enabled";
public static final String CASSANDRA_TRUSTSTORE_PATH =
"cassandra.ssl.truststore.path";
public static final String CASSANDRA_TRUSTSTORE_PASSWORD =
"cassandra.ssl.truststore.password";

public static final String DEFAULT_HOST = "localhost";
public static final String DEFAULT_PORT = "9042";
Expand Down Expand Up @@ -139,10 +152,14 @@ public class CassandraInterpreter extends Interpreter {
public static final String LOGGING_DEFAULT_RETRY = "LOGGING_DEFAULT";
public static final String LOGGING_DOWNGRADING_RETRY = "LOGGING_DOWNGRADING";
public static final String LOGGING_FALLTHROUGH_RETRY = "LOGGING_FALLTHROUGH";
public static final String DEFAULT_WITH_SSL = "false";
public static final String DEFAULT_TRUSTSTORE_PATH = "none";
public static final String DEFAULT_TRUSTSTORE_PASSWORD = "none";

public static final List NO_COMPLETION = new ArrayList<>();

InterpreterLogic helper;
Cluster.Builder clusterBuilder;
Cluster cluster;
Session session;
private JavaDriverConfig driverConfig = new JavaDriverConfig();
Expand Down Expand Up @@ -253,6 +270,12 @@ public CassandraInterpreter(Properties properties) {
"Cassandra socket read timeout in millisecs. Default = 12000")
.add(CASSANDRA_SOCKET_TCP_NO_DELAY, DEFAULT_TCP_NO_DELAY,
"Cassandra socket TCP no delay. Default = true")
.add(CASSANDRA_WITH_SSL, DEFAULT_WITH_SSL,
"Cassandra SSL")
.add(CASSANDRA_TRUSTSTORE_PATH, DEFAULT_TRUSTSTORE_PATH,
"Cassandra truststore path. Default = none")
.add(CASSANDRA_TRUSTSTORE_PASSWORD, DEFAULT_TRUSTSTORE_PASSWORD,
"Cassandra truststore password. Default = none")
.build());
}

Expand All @@ -271,7 +294,7 @@ public void open() {

Compression compression = driverConfig.getCompressionProtocol(this);

cluster = Cluster.builder()
clusterBuilder = Cluster.builder()
.addContactPoints(addresses)
.withPort(port)
.withProtocolVersion(driverConfig.getProtocolVersion(this))
Expand All @@ -287,8 +310,36 @@ public void open() {
parseInt(getProperty(CASSANDRA_MAX_SCHEMA_AGREEMENT_WAIT_SECONDS)))
.withPoolingOptions(driverConfig.getPoolingOptions(this))
.withQueryOptions(driverConfig.getQueryOptions(this))
.withSocketOptions(driverConfig.getSocketOptions(this))
.build();
.withSocketOptions(driverConfig.getSocketOptions(this));

if (getProperty(CASSANDRA_WITH_SSL).equals("true")) {
LOGGER.debug("Cassandra Interpreter: Using SSL");

try {
final SSLContext sslContext;
{
final KeyStore trustStore = KeyStore.getInstance("JKS");
final InputStream stream = Files.newInputStream(Paths.get(
getProperty(CASSANDRA_TRUSTSTORE_PATH)));
trustStore.load(stream, getProperty(CASSANDRA_TRUSTSTORE_PASSWORD).toCharArray());

final TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(
TrustManagerFactory.getDefaultAlgorithm());
trustManagerFactory.init(trustStore);

sslContext = SSLContext.getInstance("TLS");
sslContext.init(null, trustManagerFactory.getTrustManagers(), null);
}
clusterBuilder = clusterBuilder.withSSL(JdkSSLOptions.builder().withSSLContext(
sslContext).build());
} catch (Exception e) {
LOGGER.error(e.toString());
}
} else {
LOGGER.debug("Cassandra Interpreter: Not using SSL");
}

cluster = clusterBuilder.build();

session = cluster.connect();
helper = new InterpreterLogic(session);
Expand Down