我有一个用Spring和Cassadra db构建的项目。实际上，将cassandra.yml中的客户端enrcyption设置为false都可以。
工作设置（使用spring XML bean和client encyption设置为false）
<cassandra:cluster contact-points="${cassandra.contactpoints}"
port="${cassandra.port}"
username="${cassandra.username}"
password="${cassandra.password}" />
<cassandra:session id="cassandraSession"
keyspace-name="${cassandra.keyspace}" />
<cassandra:mapping />
<cassandra:converter />
<cassandra:template id="cassandraTemplate" />
现在我想启用客户端到节点加密（节点到节点已经设置并正常工作）。我在网上找到了一些教程，解释了如何创建所需的密钥库，但我无法找到如何设置Spring项目来处理它。
我在cassandra.yml中启用了客户端到节点加密，并尝试在集群bean中设置ssl-enabled="true"，但我无法从Spring连接到cassandra。我知道cassandra cluster bean中有一个ssl-options-ref属性，但是我找不到任何关于如何使用它的教程。
还试图遵循这个： How to set System Properties on run time Spring 3 MVC 在运行时设置系统属性以加载正确的信任库文件，但添加该代码没有任何区别。 我总是得到这个错误：
2016-08-19 13:46:26 INFO NettyUtil:83 - Did not find Netty's native epoll transport in the classpath, defaulting to NIO.
2016-08-19 13:46:26 WARN DefaultPromise:151 - An exception was thrown by com.datastax.driver.core.Connection$10.operationComplete()
java.util.concurrent.RejectedExecutionException: Task com.datastax.driver.core.Connection$10$1@5c21d76e rejected from java.util.concurrent.ThreadPoolExecutor@78eaecc1[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 0]
at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2047)
at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:823)
at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1369)
at com.google.common.util.concurrent.MoreExecutors$ListeningDecorator.execute(MoreExecutors.java:556)
at com.datastax.driver.core.Connection$10.operationComplete(Connection.java:573)
at com.datastax.driver.core.Connection$10.operationComplete(Connection.java:547)
at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:514)
at io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:507)
at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:486)
at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:427)
at io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:129)
at io.netty.channel.PendingWriteQueue.safeFail(PendingWriteQueue.java:286)
at io.netty.channel.PendingWriteQueue.removeAndFailAll(PendingWriteQueue.java:132)
at io.netty.handler.ssl.SslHandler.setHandshakeFailure(SslHandler.java:1231)
at io.netty.handler.ssl.SslHandler.setHandshakeFailure(SslHandler.java:1205)
at io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1060)
at io.netty.handler.ssl.SslHandler.decode(SslHandler.java:900)
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:411)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:248)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:366)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:352)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:345)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1294)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:366)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:352)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:911)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:572)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:513)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:427)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:399)
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:140)
at java.lang.Thread.run(Thread.java:745)
2016-08-19 13:46:26 INFO DefaultListableBeanFactory:444 - Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@51cc1210: defining beans [org.springframework.context.support.PropertySourcesPlaceholderConfigurer#0,cassandraCluster,cassandraSession,cassandraMapping,cassandraConverter,cassandraTemplate,smsBehavior,mailSender,preConfiguredMessage,recordingBehavior,user,trustStore]; root of factory hierarchy
2016-08-19 13:46:28 ERROR ContextLoader:331 - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cassandraSession': Invocation of init method failed; nested exception is com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s) tried for query failed (tried: ******** (com.datastax.driver.core.exceptions.TransportException: [*******] Channel has been closed))
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1512)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:521)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:296)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:293)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:610)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:410)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4939)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:656)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:535)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1461)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1445)
at org.apache.catalina.manager.ManagerServlet.deploy(ManagerServlet.java:860)
at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:357)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:611)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s) tried for query failed (tried: ************* (com.datastax.driver.core.exceptions.TransportException: [*********] Channel has been closed))
at com.datastax.driver.core.ControlConnection.reconnectInternal(ControlConnection.java:233)
at com.datastax.driver.core.ControlConnection.connect(ControlConnection.java:79)
at com.datastax.driver.core.Cluster$Manager.init(Cluster.java:1424)
at com.datastax.driver.core.Cluster.init(Cluster.java:163)
at com.datastax.driver.core.Cluster.connectAsync(Cluster.java:334)
at com.datastax.driver.core.Cluster.connect(Cluster.java:284)
at org.springframework.cassandra.config.CassandraCqlSessionFactoryBean.connect(CassandraCqlSessionFactoryBean.java:100)
at org.springframework.cassandra.config.CassandraCqlSessionFactoryBean.afterPropertiesSet(CassandraCqlSessionFactoryBean.java:94)
at org.springframework.data.cassandra.config.CassandraSessionFactoryBean.afterPropertiesSet(CassandraSessionFactoryBean.java:60)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1571)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1509)
... 52 more
假设SslOptionFactoryBean延伸AbstractFactoryBean<SSLOptions>
使用它并初始化集群的示例配置类可以是：
@Configuration
@PropertySource(value = {"file:./db.properties"})
public class CassandraConfig extends SpringHttpSessionConfiguration {
@Autowired
private SSLOptions sslOption;
@Bean
@Lazy(false)
public SslOptionFactoryBean sslOptions() throws URISyntaxException, IOException {
Resource trustStore = new FileSystemResource(env.getProperty("db.truststorefilename", ""));
Resource keyStore = new FileSystemResource(env.getProperty("db.keystorefilename", ""));
String trustStorePassword = env.getProperty("db.truststorepassword", "");
String keyStorePassword = env.getProperty("db.keystorepassword", "");
SslOptionFactoryBean option = new SslOptionFactoryBean();
option.setTrustStore(trustStore);
option.setTrustStorePassword(trustStorePassword);
option.setKeyStore(keyStore);
option.setKeyStorePassword(keyStorePassword);
return option;
}
@Bean
public Cluster cluster() throws Exception {
// load node address and port
/* ... */
return Cluster.builder()
.addContactPoint(node)
.withPort(port)
.withSSL(sslOption)
.build();
}
}
答案 0 :(得分：3)
使用JVM外部的System-properties设置信任存储（-Djavax.net.ssl.trustStore=…），或者在System-Properties工厂bean上添加bean依赖项，以确保在初始化Cassandra客户端之前应用这些属性。使用ssl-options-ref需要付出更多努力。
需要在初始化Datastax客户端之前应用基于系统属性的SSL配置。实际上，应尽可能早地应用属性，以确保没有其他类初始化默认SSL上下文，因为缓存了默认的SSL上下文。在任何组件初始化默认SSL上下文后应用javax.net.ssl.trustStore将不会应用您的设置。
您可以使用ssl-options-ref为配置的SSL上下文提供专用SSL选项，但这需要额外的代码。 com.datastax.driver.core.SSLOptions不能只配置属性值。另请注意，将Cassandra驱动程序升级到3.0需要不同的SSL上下文初始化，因为驱动程序API已更改。
示例SslOptionsFactoryBean可能如下所示：
public class SslOptionsFactoryBean extends AbstractFactoryBean<SSLOptions> {
private Resource keyStore;
private String keyStorePassword;
private Resource trustStore;
private String trustStorePassword;
@Override
public Class<?> getObjectType() {
return SSLOptions.class;
}
@Override
protected SSLOptions createInstance() throws Exception {
KeyManager[] keyManagers = getKeyStore() != null
? createKeyManagerFactory(getKeyStore(), getKeyStorePassword()).getKeyManagers() : null;
TrustManager[] trustManagers = getTrustStore() != null
? createTrustManagerFactory(getTrustStore(), getTrustStorePassword()).getTrustManagers() : null;
SSLContext sslContext = SSLContext.getInstance("TLS");
sslContext.init(keyManagers, trustManagers, null);
return new SSLOptions(sslContext, SSLOptions.DEFAULT_SSL_CIPHER_SUITES);
}
private static KeyManagerFactory createKeyManagerFactory(Resource keystoreFile, String storePassword)
throws GeneralSecurityException, IOException {
KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
try (InputStream inputStream = keystoreFile.getInputStream()) {
keyStore.load(inputStream, StringUtils.hasText(storePassword) ? storePassword.toCharArray() : null);
}
KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
keyManagerFactory.init(keyStore, StringUtils.hasText(storePassword) ? storePassword.toCharArray() : new char[0]);
return keyManagerFactory;
}
private static TrustManagerFactory createTrustManagerFactory(Resource trustFile, String storePassword)
throws GeneralSecurityException, IOException {
KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType());
try (InputStream inputStream = trustFile.getInputStream()) {
trustStore.load(inputStream, StringUtils.hasText(storePassword) ? storePassword.toCharArray() : null);
}
TrustManagerFactory trustManagerFactory = TrustManagerFactory
.getInstance(TrustManagerFactory.getDefaultAlgorithm());
trustManagerFactory.init(trustStore);
return trustManagerFactory;
}
public Resource getKeyStore() {
return keyStore;
}
public void setKeyStore(Resource keyStore) {
this.keyStore = keyStore;
}
public String getKeyStorePassword() {
return keyStorePassword;
}
public void setKeyStorePassword(String keyStorePassword) {
this.keyStorePassword = keyStorePassword;
}
public Resource getTrustStore() {
return trustStore;
}
public void setTrustStore(Resource trustStore) {
this.trustStore = trustStore;
}
public String getTrustStorePassword() {
return trustStorePassword;
}
public void setTrustStorePassword(String trustStorePassword) {
this.trustStorePassword = trustStorePassword;
}
}
XML配置部分如下所示：
<bean id="sslOptions" class="x.y.SslOptionsFactoryBean" lazy-init="false">
<property name="trustStore" value="file:truststore.jks"/>
</bean>
<cassandra:cluster contact-points="localhost"
port="9042"
username="user"
password="pass"
ssl-enabled="true"
ssl-options-ref="sslOptions"
/>
N.b。：SslOptionsFactoryBean包含完整SSLContext初始化的信任管理员和主要管理人员。
堆栈跟踪显示SSL已使用Datastax驱动程序配置。它还显示握手失败并且失败通知事件失败，并显示：
Task com.datastax.driver.core.Connection$10$1@5c21d76e rejected from java.util.concurrent.ThreadPoolExecutor@78eaecc1[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 0]
该消息表明在SSL握手（失败）完成期间Netty EventLoopGroup将关闭。 Spring容器应该运行一段时间才能看到握手失败消息。