[SPARK-2938] Support SASL authentication in NettyBlockTransferService Also lays the groundwork for supporting it inside the external shuffle service.
Author: Aaron Davidson <aa...@databricks.com> Closes #3087 from aarondav/sasl and squashes the following commits: 3481718 [Aaron Davidson] Delete rogue println 44f8410 [Aaron Davidson] Delete documentation - muahaha! eb9f065 [Aaron Davidson] Improve documentation and add end-to-end test at Spark-level a6b95f1 [Aaron Davidson] Address comments 785bbde [Aaron Davidson] Cleanup 79973cb [Aaron Davidson] Remove unused file 151b3c5 [Aaron Davidson] Add docs, timeout config, better failure handling f6177d7 [Aaron Davidson] Cleanup SASL state upon connection termination 7b42adb [Aaron Davidson] Add unit tests 8191bcb [Aaron Davidson] [SPARK-2938] Support SASL authentication in NettyBlockTransferService Project: http://git-wip-us.apache.org/repos/asf/spark/repo Commit: http://git-wip-us.apache.org/repos/asf/spark/commit/23643403 Tree: http://git-wip-us.apache.org/repos/asf/spark/tree/23643403 Diff: http://git-wip-us.apache.org/repos/asf/spark/diff/23643403 Branch: refs/heads/branch-1.2 Commit: 236434033fe452e70dbd0236935a49693712e130 Parents: 9cba88c Author: Aaron Davidson <aa...@databricks.com> Authored: Tue Nov 4 16:15:38 2014 -0800 Committer: Patrick Wendell <pwend...@gmail.com> Committed: Wed Nov 5 14:41:03 2014 -0800 ---------------------------------------------------------------------- .../org/apache/spark/SecurityManager.scala | 23 ++- .../main/scala/org/apache/spark/SparkConf.scala | 6 + .../scala/org/apache/spark/SparkContext.scala | 2 + .../main/scala/org/apache/spark/SparkEnv.scala | 3 +- .../org/apache/spark/SparkSaslClient.scala | 147 ---------------- .../org/apache/spark/SparkSaslServer.scala | 176 ------------------- .../org/apache/spark/executor/Executor.scala | 1 + .../netty/NettyBlockTransferService.scala | 28 ++- .../apache/spark/network/nio/Connection.scala | 5 +- .../spark/network/nio/ConnectionManager.scala | 7 +- .../org/apache/spark/storage/BlockManager.scala | 45 +++-- .../netty/NettyBlockTransferSecuritySuite.scala | 161 +++++++++++++++++ .../network/nio/ConnectionManagerSuite.scala | 6 +- .../storage/BlockManagerReplicationSuite.scala | 2 + .../spark/storage/BlockManagerSuite.scala | 4 +- docs/security.md | 1 - .../apache/spark/network/TransportContext.java | 15 +- .../spark/network/client/TransportClient.java | 11 +- .../client/TransportClientBootstrap.java | 32 ++++ .../network/client/TransportClientFactory.java | 64 +++++-- .../spark/network/server/NoOpRpcHandler.java | 2 +- .../apache/spark/network/server/RpcHandler.java | 19 +- .../network/server/TransportRequestHandler.java | 1 + .../spark/network/util/TransportConf.java | 3 + .../spark/network/sasl/SaslClientBootstrap.java | 74 ++++++++ .../apache/spark/network/sasl/SaslMessage.java | 74 ++++++++ .../spark/network/sasl/SaslRpcHandler.java | 97 ++++++++++ .../spark/network/sasl/SecretKeyHolder.java | 35 ++++ .../spark/network/sasl/SparkSaslClient.java | 138 +++++++++++++++ .../spark/network/sasl/SparkSaslServer.java | 170 ++++++++++++++++++ .../shuffle/ExternalShuffleBlockHandler.java | 2 +- .../network/shuffle/ExternalShuffleClient.java | 15 +- .../spark/network/shuffle/ShuffleClient.java | 11 +- .../network/sasl/SaslIntegrationSuite.java | 172 ++++++++++++++++++ .../spark/network/sasl/SparkSaslSuite.java | 89 ++++++++++ .../ExternalShuffleIntegrationSuite.java | 7 +- .../streaming/ReceivedBlockHandlerSuite.scala | 1 + 37 files changed, 1257 insertions(+), 392 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/core/src/main/scala/org/apache/spark/SecurityManager.scala ---------------------------------------------------------------------- diff --git a/core/src/main/scala/org/apache/spark/SecurityManager.scala b/core/src/main/scala/org/apache/spark/SecurityManager.scala index 0e0f1a7..dee935f 100644 --- a/core/src/main/scala/org/apache/spark/SecurityManager.scala +++ b/core/src/main/scala/org/apache/spark/SecurityManager.scala @@ -22,6 +22,7 @@ import java.net.{Authenticator, PasswordAuthentication} import org.apache.hadoop.io.Text import org.apache.spark.deploy.SparkHadoopUtil +import org.apache.spark.network.sasl.SecretKeyHolder /** * Spark class responsible for security. @@ -84,7 +85,7 @@ import org.apache.spark.deploy.SparkHadoopUtil * Authenticator installed in the SecurityManager to how it does the authentication * and in this case gets the user name and password from the request. * - * - ConnectionManager -> The Spark ConnectionManager uses java nio to asynchronously + * - BlockTransferService -> The Spark BlockTransferServices uses java nio to asynchronously * exchange messages. For this we use the Java SASL * (Simple Authentication and Security Layer) API and again use DIGEST-MD5 * as the authentication mechanism. This means the shared secret is not passed @@ -98,7 +99,7 @@ import org.apache.spark.deploy.SparkHadoopUtil * of protection they want. If we support those, the messages will also have to * be wrapped and unwrapped via the SaslServer/SaslClient.wrap/unwrap API's. * - * Since the connectionManager does asynchronous messages passing, the SASL + * Since the NioBlockTransferService does asynchronous messages passing, the SASL * authentication is a bit more complex. A ConnectionManager can be both a client * and a Server, so for a particular connection is has to determine what to do. * A ConnectionId was added to be able to track connections and is used to @@ -107,6 +108,10 @@ import org.apache.spark.deploy.SparkHadoopUtil * and waits for the response from the server and does the handshake before sending * the real message. * + * The NettyBlockTransferService ensures that SASL authentication is performed + * synchronously prior to any other communication on a connection. This is done in + * SaslClientBootstrap on the client side and SaslRpcHandler on the server side. + * * - HTTP for the Spark UI -> the UI was changed to use servlets so that javax servlet filters * can be used. Yarn requires a specific AmIpFilter be installed for security to work * properly. For non-Yarn deployments, users can write a filter to go through a @@ -139,7 +144,7 @@ import org.apache.spark.deploy.SparkHadoopUtil * can take place. */ -private[spark] class SecurityManager(sparkConf: SparkConf) extends Logging { +private[spark] class SecurityManager(sparkConf: SparkConf) extends Logging with SecretKeyHolder { // key used to store the spark secret in the Hadoop UGI private val sparkSecretLookupKey = "sparkCookie" @@ -337,4 +342,16 @@ private[spark] class SecurityManager(sparkConf: SparkConf) extends Logging { * @return the secret key as a String if authentication is enabled, otherwise returns null */ def getSecretKey(): String = secretKey + + override def getSaslUser(appId: String): String = { + val myAppId = sparkConf.getAppId + require(appId == myAppId, s"SASL appId $appId did not match my appId ${myAppId}") + getSaslUser() + } + + override def getSecretKey(appId: String): String = { + val myAppId = sparkConf.getAppId + require(appId == myAppId, s"SASL appId $appId did not match my appId ${myAppId}") + getSecretKey() + } } http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/core/src/main/scala/org/apache/spark/SparkConf.scala ---------------------------------------------------------------------- diff --git a/core/src/main/scala/org/apache/spark/SparkConf.scala b/core/src/main/scala/org/apache/spark/SparkConf.scala index ad0a901..4c6c86c 100644 --- a/core/src/main/scala/org/apache/spark/SparkConf.scala +++ b/core/src/main/scala/org/apache/spark/SparkConf.scala @@ -217,6 +217,12 @@ class SparkConf(loadDefaults: Boolean) extends Cloneable with Logging { */ getAll.filter { case (k, _) => isAkkaConf(k) } + /** + * Returns the Spark application id, valid in the Driver after TaskScheduler registration and + * from the start in the Executor. + */ + def getAppId: String = get("spark.app.id") + /** Does the configuration contain a given parameter? */ def contains(key: String): Boolean = settings.contains(key) http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/core/src/main/scala/org/apache/spark/SparkContext.scala ---------------------------------------------------------------------- diff --git a/core/src/main/scala/org/apache/spark/SparkContext.scala b/core/src/main/scala/org/apache/spark/SparkContext.scala index 8b4db78..d65027d 100644 --- a/core/src/main/scala/org/apache/spark/SparkContext.scala +++ b/core/src/main/scala/org/apache/spark/SparkContext.scala @@ -313,6 +313,8 @@ class SparkContext(config: SparkConf) extends SparkStatusAPI with Logging { val applicationId: String = taskScheduler.applicationId() conf.set("spark.app.id", applicationId) + env.blockManager.initialize(applicationId) + val metricsSystem = env.metricsSystem // The metrics system for Driver need to be set spark.app.id to app ID. http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/core/src/main/scala/org/apache/spark/SparkEnv.scala ---------------------------------------------------------------------- diff --git a/core/src/main/scala/org/apache/spark/SparkEnv.scala b/core/src/main/scala/org/apache/spark/SparkEnv.scala index e2f13ac..45e9d7f 100644 --- a/core/src/main/scala/org/apache/spark/SparkEnv.scala +++ b/core/src/main/scala/org/apache/spark/SparkEnv.scala @@ -276,7 +276,7 @@ object SparkEnv extends Logging { val blockTransferService = conf.get("spark.shuffle.blockTransferService", "netty").toLowerCase match { case "netty" => - new NettyBlockTransferService(conf) + new NettyBlockTransferService(conf, securityManager) case "nio" => new NioBlockTransferService(conf, securityManager) } @@ -285,6 +285,7 @@ object SparkEnv extends Logging { "BlockManagerMaster", new BlockManagerMasterActor(isLocal, conf, listenerBus)), conf, isDriver) + // NB: blockManager is not valid until initialize() is called later. val blockManager = new BlockManager(executorId, actorSystem, blockManagerMaster, serializer, conf, mapOutputTracker, shuffleManager, blockTransferService) http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/core/src/main/scala/org/apache/spark/SparkSaslClient.scala ---------------------------------------------------------------------- diff --git a/core/src/main/scala/org/apache/spark/SparkSaslClient.scala b/core/src/main/scala/org/apache/spark/SparkSaslClient.scala deleted file mode 100644 index a954fcc..0000000 --- a/core/src/main/scala/org/apache/spark/SparkSaslClient.scala +++ /dev/null @@ -1,147 +0,0 @@ -/* - * 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.spark - -import javax.security.auth.callback.Callback -import javax.security.auth.callback.CallbackHandler -import javax.security.auth.callback.NameCallback -import javax.security.auth.callback.PasswordCallback -import javax.security.auth.callback.UnsupportedCallbackException -import javax.security.sasl.RealmCallback -import javax.security.sasl.RealmChoiceCallback -import javax.security.sasl.Sasl -import javax.security.sasl.SaslClient -import javax.security.sasl.SaslException - -import scala.collection.JavaConversions.mapAsJavaMap - -import com.google.common.base.Charsets.UTF_8 - -/** - * Implements SASL Client logic for Spark - */ -private[spark] class SparkSaslClient(securityMgr: SecurityManager) extends Logging { - - /** - * Used to respond to server's counterpart, SaslServer with SASL tokens - * represented as byte arrays. - * - * The authentication mechanism used here is DIGEST-MD5. This could be changed to be - * configurable in the future. - */ - private var saslClient: SaslClient = Sasl.createSaslClient(Array[String](SparkSaslServer.DIGEST), - null, null, SparkSaslServer.SASL_DEFAULT_REALM, SparkSaslServer.SASL_PROPS, - new SparkSaslClientCallbackHandler(securityMgr)) - - /** - * Used to initiate SASL handshake with server. - * @return response to challenge if needed - */ - def firstToken(): Array[Byte] = { - synchronized { - val saslToken: Array[Byte] = - if (saslClient != null && saslClient.hasInitialResponse()) { - logDebug("has initial response") - saslClient.evaluateChallenge(new Array[Byte](0)) - } else { - new Array[Byte](0) - } - saslToken - } - } - - /** - * Determines whether the authentication exchange has completed. - * @return true is complete, otherwise false - */ - def isComplete(): Boolean = { - synchronized { - if (saslClient != null) saslClient.isComplete() else false - } - } - - /** - * Respond to server's SASL token. - * @param saslTokenMessage contains server's SASL token - * @return client's response SASL token - */ - def saslResponse(saslTokenMessage: Array[Byte]): Array[Byte] = { - synchronized { - if (saslClient != null) saslClient.evaluateChallenge(saslTokenMessage) else new Array[Byte](0) - } - } - - /** - * Disposes of any system resources or security-sensitive information the - * SaslClient might be using. - */ - def dispose() { - synchronized { - if (saslClient != null) { - try { - saslClient.dispose() - } catch { - case e: SaslException => // ignored - } finally { - saslClient = null - } - } - } - } - - /** - * Implementation of javax.security.auth.callback.CallbackHandler - * that works with share secrets. - */ - private class SparkSaslClientCallbackHandler(securityMgr: SecurityManager) extends - CallbackHandler { - - private val userName: String = - SparkSaslServer.encodeIdentifier(securityMgr.getSaslUser().getBytes(UTF_8)) - private val secretKey = securityMgr.getSecretKey() - private val userPassword: Array[Char] = SparkSaslServer.encodePassword( - if (secretKey != null) secretKey.getBytes(UTF_8) else "".getBytes(UTF_8)) - - /** - * Implementation used to respond to SASL request from the server. - * - * @param callbacks objects that indicate what credential information the - * server's SaslServer requires from the client. - */ - override def handle(callbacks: Array[Callback]) { - logDebug("in the sasl client callback handler") - callbacks foreach { - case nc: NameCallback => { - logDebug("handle: SASL client callback: setting username: " + userName) - nc.setName(userName) - } - case pc: PasswordCallback => { - logDebug("handle: SASL client callback: setting userPassword") - pc.setPassword(userPassword) - } - case rc: RealmCallback => { - logDebug("handle: SASL client callback: setting realm: " + rc.getDefaultText()) - rc.setText(rc.getDefaultText()) - } - case cb: RealmChoiceCallback => {} - case cb: Callback => throw - new UnsupportedCallbackException(cb, "handle: Unrecognized SASL client callback") - } - } - } -} http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/core/src/main/scala/org/apache/spark/SparkSaslServer.scala ---------------------------------------------------------------------- diff --git a/core/src/main/scala/org/apache/spark/SparkSaslServer.scala b/core/src/main/scala/org/apache/spark/SparkSaslServer.scala deleted file mode 100644 index 7c2afb3..0000000 --- a/core/src/main/scala/org/apache/spark/SparkSaslServer.scala +++ /dev/null @@ -1,176 +0,0 @@ -/* - * 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.spark - -import javax.security.auth.callback.Callback -import javax.security.auth.callback.CallbackHandler -import javax.security.auth.callback.NameCallback -import javax.security.auth.callback.PasswordCallback -import javax.security.auth.callback.UnsupportedCallbackException -import javax.security.sasl.AuthorizeCallback -import javax.security.sasl.RealmCallback -import javax.security.sasl.Sasl -import javax.security.sasl.SaslException -import javax.security.sasl.SaslServer -import scala.collection.JavaConversions.mapAsJavaMap - -import com.google.common.base.Charsets.UTF_8 -import org.apache.commons.net.util.Base64 - -/** - * Encapsulates SASL server logic - */ -private[spark] class SparkSaslServer(securityMgr: SecurityManager) extends Logging { - - /** - * Actual SASL work done by this object from javax.security.sasl. - */ - private var saslServer: SaslServer = Sasl.createSaslServer(SparkSaslServer.DIGEST, null, - SparkSaslServer.SASL_DEFAULT_REALM, SparkSaslServer.SASL_PROPS, - new SparkSaslDigestCallbackHandler(securityMgr)) - - /** - * Determines whether the authentication exchange has completed. - * @return true is complete, otherwise false - */ - def isComplete(): Boolean = { - synchronized { - if (saslServer != null) saslServer.isComplete() else false - } - } - - /** - * Used to respond to server SASL tokens. - * @param token Server's SASL token - * @return response to send back to the server. - */ - def response(token: Array[Byte]): Array[Byte] = { - synchronized { - if (saslServer != null) saslServer.evaluateResponse(token) else new Array[Byte](0) - } - } - - /** - * Disposes of any system resources or security-sensitive information the - * SaslServer might be using. - */ - def dispose() { - synchronized { - if (saslServer != null) { - try { - saslServer.dispose() - } catch { - case e: SaslException => // ignore - } finally { - saslServer = null - } - } - } - } - - /** - * Implementation of javax.security.auth.callback.CallbackHandler - * for SASL DIGEST-MD5 mechanism - */ - private class SparkSaslDigestCallbackHandler(securityMgr: SecurityManager) - extends CallbackHandler { - - private val userName: String = - SparkSaslServer.encodeIdentifier(securityMgr.getSaslUser().getBytes(UTF_8)) - - override def handle(callbacks: Array[Callback]) { - logDebug("In the sasl server callback handler") - callbacks foreach { - case nc: NameCallback => { - logDebug("handle: SASL server callback: setting username") - nc.setName(userName) - } - case pc: PasswordCallback => { - logDebug("handle: SASL server callback: setting userPassword") - val password: Array[Char] = - SparkSaslServer.encodePassword(securityMgr.getSecretKey().getBytes(UTF_8)) - pc.setPassword(password) - } - case rc: RealmCallback => { - logDebug("handle: SASL server callback: setting realm: " + rc.getDefaultText()) - rc.setText(rc.getDefaultText()) - } - case ac: AuthorizeCallback => { - val authid = ac.getAuthenticationID() - val authzid = ac.getAuthorizationID() - if (authid.equals(authzid)) { - logDebug("set auth to true") - ac.setAuthorized(true) - } else { - logDebug("set auth to false") - ac.setAuthorized(false) - } - if (ac.isAuthorized()) { - logDebug("sasl server is authorized") - ac.setAuthorizedID(authzid) - } - } - case cb: Callback => throw - new UnsupportedCallbackException(cb, "handle: Unrecognized SASL DIGEST-MD5 Callback") - } - } - } -} - -private[spark] object SparkSaslServer { - - /** - * This is passed as the server name when creating the sasl client/server. - * This could be changed to be configurable in the future. - */ - val SASL_DEFAULT_REALM = "default" - - /** - * The authentication mechanism used here is DIGEST-MD5. This could be changed to be - * configurable in the future. - */ - val DIGEST = "DIGEST-MD5" - - /** - * The quality of protection is just "auth". This means that we are doing - * authentication only, we are not supporting integrity or privacy protection of the - * communication channel after authentication. This could be changed to be configurable - * in the future. - */ - val SASL_PROPS = Map(Sasl.QOP -> "auth", Sasl.SERVER_AUTH ->"true") - - /** - * Encode a byte[] identifier as a Base64-encoded string. - * - * @param identifier identifier to encode - * @return Base64-encoded string - */ - def encodeIdentifier(identifier: Array[Byte]): String = { - new String(Base64.encodeBase64(identifier), UTF_8) - } - - /** - * Encode a password as a base64-encoded char[] array. - * @param password as a byte array. - * @return password as a char array. - */ - def encodePassword(password: Array[Byte]): Array[Char] = { - new String(Base64.encodeBase64(password), UTF_8).toCharArray() - } -} - http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/core/src/main/scala/org/apache/spark/executor/Executor.scala ---------------------------------------------------------------------- diff --git a/core/src/main/scala/org/apache/spark/executor/Executor.scala b/core/src/main/scala/org/apache/spark/executor/Executor.scala index e24a15f..7dd5265 100644 --- a/core/src/main/scala/org/apache/spark/executor/Executor.scala +++ b/core/src/main/scala/org/apache/spark/executor/Executor.scala @@ -86,6 +86,7 @@ private[spark] class Executor( conf, executorId, slaveHostname, port, isLocal, actorSystem) SparkEnv.set(_env) _env.metricsSystem.registerSource(executorSource) + _env.blockManager.initialize(conf.getAppId) _env } else { SparkEnv.get http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/core/src/main/scala/org/apache/spark/network/netty/NettyBlockTransferService.scala ---------------------------------------------------------------------- diff --git a/core/src/main/scala/org/apache/spark/network/netty/NettyBlockTransferService.scala b/core/src/main/scala/org/apache/spark/network/netty/NettyBlockTransferService.scala index 1c4327c..0d1fc81 100644 --- a/core/src/main/scala/org/apache/spark/network/netty/NettyBlockTransferService.scala +++ b/core/src/main/scala/org/apache/spark/network/netty/NettyBlockTransferService.scala @@ -17,13 +17,15 @@ package org.apache.spark.network.netty +import scala.collection.JavaConversions._ import scala.concurrent.{Future, Promise} -import org.apache.spark.SparkConf +import org.apache.spark.{SecurityManager, SparkConf} import org.apache.spark.network._ import org.apache.spark.network.buffer.ManagedBuffer -import org.apache.spark.network.client.{RpcResponseCallback, TransportClientFactory} +import org.apache.spark.network.client.{TransportClientBootstrap, RpcResponseCallback, TransportClientFactory} import org.apache.spark.network.netty.NettyMessages.{OpenBlocks, UploadBlock} +import org.apache.spark.network.sasl.{SaslRpcHandler, SaslClientBootstrap} import org.apache.spark.network.server._ import org.apache.spark.network.shuffle.{BlockFetchingListener, OneForOneBlockFetcher} import org.apache.spark.serializer.JavaSerializer @@ -33,18 +35,30 @@ import org.apache.spark.util.Utils /** * A BlockTransferService that uses Netty to fetch a set of blocks at at time. */ -class NettyBlockTransferService(conf: SparkConf) extends BlockTransferService { +class NettyBlockTransferService(conf: SparkConf, securityManager: SecurityManager) + extends BlockTransferService { + // TODO: Don't use Java serialization, use a more cross-version compatible serialization format. - val serializer = new JavaSerializer(conf) + private val serializer = new JavaSerializer(conf) + private val authEnabled = securityManager.isAuthenticationEnabled() + private val transportConf = SparkTransportConf.fromSparkConf(conf) private[this] var transportContext: TransportContext = _ private[this] var server: TransportServer = _ private[this] var clientFactory: TransportClientFactory = _ override def init(blockDataManager: BlockDataManager): Unit = { - val rpcHandler = new NettyBlockRpcServer(serializer, blockDataManager) - transportContext = new TransportContext(SparkTransportConf.fromSparkConf(conf), rpcHandler) - clientFactory = transportContext.createClientFactory() + val (rpcHandler: RpcHandler, bootstrap: Option[TransportClientBootstrap]) = { + val nettyRpcHandler = new NettyBlockRpcServer(serializer, blockDataManager) + if (!authEnabled) { + (nettyRpcHandler, None) + } else { + (new SaslRpcHandler(nettyRpcHandler, securityManager), + Some(new SaslClientBootstrap(transportConf, conf.getAppId, securityManager))) + } + } + transportContext = new TransportContext(transportConf, rpcHandler) + clientFactory = transportContext.createClientFactory(bootstrap.toList) server = transportContext.createServer() logInfo("Server created on " + server.getPort) } http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/core/src/main/scala/org/apache/spark/network/nio/Connection.scala ---------------------------------------------------------------------- diff --git a/core/src/main/scala/org/apache/spark/network/nio/Connection.scala b/core/src/main/scala/org/apache/spark/network/nio/Connection.scala index 4f6f5e2..c2d9578 100644 --- a/core/src/main/scala/org/apache/spark/network/nio/Connection.scala +++ b/core/src/main/scala/org/apache/spark/network/nio/Connection.scala @@ -23,12 +23,13 @@ import java.nio.channels._ import java.util.concurrent.ConcurrentLinkedQueue import java.util.LinkedList -import org.apache.spark._ - import scala.collection.JavaConversions._ import scala.collection.mutable.{ArrayBuffer, HashMap} import scala.util.control.NonFatal +import org.apache.spark._ +import org.apache.spark.network.sasl.{SparkSaslClient, SparkSaslServer} + private[nio] abstract class Connection(val channel: SocketChannel, val selector: Selector, val socketRemoteConnectionManagerId: ConnectionManagerId, val connectionId: ConnectionId, http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/core/src/main/scala/org/apache/spark/network/nio/ConnectionManager.scala ---------------------------------------------------------------------- diff --git a/core/src/main/scala/org/apache/spark/network/nio/ConnectionManager.scala b/core/src/main/scala/org/apache/spark/network/nio/ConnectionManager.scala index 8408b75..f198aa8 100644 --- a/core/src/main/scala/org/apache/spark/network/nio/ConnectionManager.scala +++ b/core/src/main/scala/org/apache/spark/network/nio/ConnectionManager.scala @@ -34,6 +34,7 @@ import scala.language.postfixOps import com.google.common.base.Charsets.UTF_8 import org.apache.spark._ +import org.apache.spark.network.sasl.{SparkSaslClient, SparkSaslServer} import org.apache.spark.util.Utils import scala.util.Try @@ -600,7 +601,7 @@ private[nio] class ConnectionManager( } else { var replyToken : Array[Byte] = null try { - replyToken = waitingConn.sparkSaslClient.saslResponse(securityMsg.getToken) + replyToken = waitingConn.sparkSaslClient.response(securityMsg.getToken) if (waitingConn.isSaslComplete()) { logDebug("Client sasl completed after evaluate for id: " + waitingConn.connectionId) connectionsAwaitingSasl -= waitingConn.connectionId @@ -634,7 +635,7 @@ private[nio] class ConnectionManager( connection.synchronized { if (connection.sparkSaslServer == null) { logDebug("Creating sasl Server") - connection.sparkSaslServer = new SparkSaslServer(securityManager) + connection.sparkSaslServer = new SparkSaslServer(conf.getAppId, securityManager) } } replyToken = connection.sparkSaslServer.response(securityMsg.getToken) @@ -778,7 +779,7 @@ private[nio] class ConnectionManager( if (!conn.isSaslComplete()) { conn.synchronized { if (conn.sparkSaslClient == null) { - conn.sparkSaslClient = new SparkSaslClient(securityManager) + conn.sparkSaslClient = new SparkSaslClient(conf.getAppId, securityManager) var firstResponse: Array[Byte] = null try { firstResponse = conn.sparkSaslClient.firstToken() http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/core/src/main/scala/org/apache/spark/storage/BlockManager.scala ---------------------------------------------------------------------- diff --git a/core/src/main/scala/org/apache/spark/storage/BlockManager.scala b/core/src/main/scala/org/apache/spark/storage/BlockManager.scala index 5f5dd0d..655d16c 100644 --- a/core/src/main/scala/org/apache/spark/storage/BlockManager.scala +++ b/core/src/main/scala/org/apache/spark/storage/BlockManager.scala @@ -57,6 +57,12 @@ private[spark] class BlockResult( inputMetrics.bytesRead = bytes } +/** + * Manager running on every node (driver and executors) which provides interfaces for putting and + * retrieving blocks both locally and remotely into various stores (memory, disk, and off-heap). + * + * Note that #initialize() must be called before the BlockManager is usable. + */ private[spark] class BlockManager( executorId: String, actorSystem: ActorSystem, @@ -69,8 +75,6 @@ private[spark] class BlockManager( blockTransferService: BlockTransferService) extends BlockDataManager with Logging { - blockTransferService.init(this) - val diskBlockManager = new DiskBlockManager(this, conf) private val blockInfo = new TimeStampedHashMap[BlockId, BlockInfo] @@ -102,22 +106,16 @@ private[spark] class BlockManager( + " switch to sort-based shuffle.") } - val blockManagerId = BlockManagerId( - executorId, blockTransferService.hostName, blockTransferService.port) + var blockManagerId: BlockManagerId = _ // Address of the server that serves this executor's shuffle files. This is either an external // service, or just our own Executor's BlockManager. - private[spark] val shuffleServerId = if (externalShuffleServiceEnabled) { - BlockManagerId(executorId, blockTransferService.hostName, externalShuffleServicePort) - } else { - blockManagerId - } + private[spark] var shuffleServerId: BlockManagerId = _ // Client to read other executors' shuffle files. This is either an external service, or just the // standard BlockTranserService to directly connect to other Executors. private[spark] val shuffleClient = if (externalShuffleServiceEnabled) { - val appId = conf.get("spark.app.id", "unknown-app-id") - new ExternalShuffleClient(SparkTransportConf.fromSparkConf(conf), appId) + new ExternalShuffleClient(SparkTransportConf.fromSparkConf(conf)) } else { blockTransferService } @@ -150,8 +148,6 @@ private[spark] class BlockManager( private val peerFetchLock = new Object private var lastPeerFetchTime = 0L - initialize() - /* The compression codec to use. Note that the "lazy" val is necessary because we want to delay * the initialization of the compression codec until it is first used. The reason is that a Spark * program could be using a user-defined codec in a third party jar, which is loaded in @@ -176,10 +172,27 @@ private[spark] class BlockManager( } /** - * Initialize the BlockManager. Register to the BlockManagerMaster, and start the - * BlockManagerWorker actor. Additionally registers with a local shuffle service if configured. + * Initializes the BlockManager with the given appId. This is not performed in the constructor as + * the appId may not be known at BlockManager instantiation time (in particular for the driver, + * where it is only learned after registration with the TaskScheduler). + * + * This method initializes the BlockTransferService and ShuffleClient, registers with the + * BlockManagerMaster, starts the BlockManagerWorker actor, and registers with a local shuffle + * service if configured. */ - private def initialize(): Unit = { + def initialize(appId: String): Unit = { + blockTransferService.init(this) + shuffleClient.init(appId) + + blockManagerId = BlockManagerId( + executorId, blockTransferService.hostName, blockTransferService.port) + + shuffleServerId = if (externalShuffleServiceEnabled) { + BlockManagerId(executorId, blockTransferService.hostName, externalShuffleServicePort) + } else { + blockManagerId + } + master.registerBlockManager(blockManagerId, maxMemory, slaveActor) // Register Executors' configuration with the local shuffle service, if one should exist. http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/core/src/test/scala/org/apache/spark/network/netty/NettyBlockTransferSecuritySuite.scala ---------------------------------------------------------------------- diff --git a/core/src/test/scala/org/apache/spark/network/netty/NettyBlockTransferSecuritySuite.scala b/core/src/test/scala/org/apache/spark/network/netty/NettyBlockTransferSecuritySuite.scala new file mode 100644 index 0000000..bed0ed9 --- /dev/null +++ b/core/src/test/scala/org/apache/spark/network/netty/NettyBlockTransferSecuritySuite.scala @@ -0,0 +1,161 @@ +/* + * 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.spark.network.netty + +import java.nio._ +import java.util.concurrent.TimeUnit + +import scala.concurrent.duration._ +import scala.concurrent.{Await, Promise} +import scala.util.{Failure, Success, Try} + +import org.apache.commons.io.IOUtils +import org.apache.spark.network.buffer.{ManagedBuffer, NioManagedBuffer} +import org.apache.spark.network.shuffle.BlockFetchingListener +import org.apache.spark.network.{BlockDataManager, BlockTransferService} +import org.apache.spark.storage.{BlockId, ShuffleBlockId} +import org.apache.spark.{SecurityManager, SparkConf} +import org.mockito.Mockito._ +import org.scalatest.mock.MockitoSugar +import org.scalatest.{BeforeAndAfterAll, BeforeAndAfterEach, FunSuite, ShouldMatchers} + +class NettyBlockTransferSecuritySuite extends FunSuite with MockitoSugar with ShouldMatchers { + test("security default off") { + testConnection(new SparkConf, new SparkConf) match { + case Success(_) => // expected + case Failure(t) => fail(t) + } + } + + test("security on same password") { + val conf = new SparkConf() + .set("spark.authenticate", "true") + .set("spark.authenticate.secret", "good") + .set("spark.app.id", "app-id") + testConnection(conf, conf) match { + case Success(_) => // expected + case Failure(t) => fail(t) + } + } + + test("security on mismatch password") { + val conf0 = new SparkConf() + .set("spark.authenticate", "true") + .set("spark.authenticate.secret", "good") + .set("spark.app.id", "app-id") + val conf1 = conf0.clone.set("spark.authenticate.secret", "bad") + testConnection(conf0, conf1) match { + case Success(_) => fail("Should have failed") + case Failure(t) => t.getMessage should include ("Mismatched response") + } + } + + test("security mismatch auth off on server") { + val conf0 = new SparkConf() + .set("spark.authenticate", "true") + .set("spark.authenticate.secret", "good") + .set("spark.app.id", "app-id") + val conf1 = conf0.clone.set("spark.authenticate", "false") + testConnection(conf0, conf1) match { + case Success(_) => fail("Should have failed") + case Failure(t) => // any funny error may occur, sever will interpret SASL token as RPC + } + } + + test("security mismatch auth off on client") { + val conf0 = new SparkConf() + .set("spark.authenticate", "false") + .set("spark.authenticate.secret", "good") + .set("spark.app.id", "app-id") + val conf1 = conf0.clone.set("spark.authenticate", "true") + testConnection(conf0, conf1) match { + case Success(_) => fail("Should have failed") + case Failure(t) => t.getMessage should include ("Expected SaslMessage") + } + } + + test("security mismatch app ids") { + val conf0 = new SparkConf() + .set("spark.authenticate", "true") + .set("spark.authenticate.secret", "good") + .set("spark.app.id", "app-id") + val conf1 = conf0.clone.set("spark.app.id", "other-id") + testConnection(conf0, conf1) match { + case Success(_) => fail("Should have failed") + case Failure(t) => t.getMessage should include ("SASL appId app-id did not match") + } + } + + /** + * Creates two servers with different configurations and sees if they can talk. + * Returns Success() if they can transfer a block, and Failure() if the block transfer was failed + * properly. We will throw an out-of-band exception if something other than that goes wrong. + */ + private def testConnection(conf0: SparkConf, conf1: SparkConf): Try[Unit] = { + val blockManager = mock[BlockDataManager] + val blockId = ShuffleBlockId(0, 1, 2) + val blockString = "Hello, world!" + val blockBuffer = new NioManagedBuffer(ByteBuffer.wrap(blockString.getBytes)) + when(blockManager.getBlockData(blockId)).thenReturn(blockBuffer) + + val securityManager0 = new SecurityManager(conf0) + val exec0 = new NettyBlockTransferService(conf0, securityManager0) + exec0.init(blockManager) + + val securityManager1 = new SecurityManager(conf1) + val exec1 = new NettyBlockTransferService(conf1, securityManager1) + exec1.init(blockManager) + + val result = fetchBlock(exec0, exec1, "1", blockId) match { + case Success(buf) => + IOUtils.toString(buf.createInputStream()) should equal(blockString) + buf.release() + Success() + case Failure(t) => + Failure(t) + } + exec0.close() + exec1.close() + result + } + + /** Synchronously fetches a single block, acting as the given executor fetching from another. */ + private def fetchBlock( + self: BlockTransferService, + from: BlockTransferService, + execId: String, + blockId: BlockId): Try[ManagedBuffer] = { + + val promise = Promise[ManagedBuffer]() + + self.fetchBlocks(from.hostName, from.port, execId, Array(blockId.toString), + new BlockFetchingListener { + override def onBlockFetchFailure(blockId: String, exception: Throwable): Unit = { + promise.failure(exception) + } + + override def onBlockFetchSuccess(blockId: String, data: ManagedBuffer): Unit = { + promise.success(data.retain()) + } + }) + + Await.ready(promise.future, FiniteDuration(1000, TimeUnit.MILLISECONDS)) + promise.future.value.get + } +} + http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/core/src/test/scala/org/apache/spark/network/nio/ConnectionManagerSuite.scala ---------------------------------------------------------------------- diff --git a/core/src/test/scala/org/apache/spark/network/nio/ConnectionManagerSuite.scala b/core/src/test/scala/org/apache/spark/network/nio/ConnectionManagerSuite.scala index b70734d..716f875 100644 --- a/core/src/test/scala/org/apache/spark/network/nio/ConnectionManagerSuite.scala +++ b/core/src/test/scala/org/apache/spark/network/nio/ConnectionManagerSuite.scala @@ -60,6 +60,7 @@ class ConnectionManagerSuite extends FunSuite { val conf = new SparkConf conf.set("spark.authenticate", "true") conf.set("spark.authenticate.secret", "good") + conf.set("spark.app.id", "app-id") val securityManager = new SecurityManager(conf) val manager = new ConnectionManager(0, conf, securityManager) var numReceivedMessages = 0 @@ -95,6 +96,7 @@ class ConnectionManagerSuite extends FunSuite { test("security mismatch password") { val conf = new SparkConf conf.set("spark.authenticate", "true") + conf.set("spark.app.id", "app-id") conf.set("spark.authenticate.secret", "good") val securityManager = new SecurityManager(conf) val manager = new ConnectionManager(0, conf, securityManager) @@ -105,9 +107,7 @@ class ConnectionManagerSuite extends FunSuite { None }) - val badconf = new SparkConf - badconf.set("spark.authenticate", "true") - badconf.set("spark.authenticate.secret", "bad") + val badconf = conf.clone.set("spark.authenticate.secret", "bad") val badsecurityManager = new SecurityManager(badconf) val managerServer = new ConnectionManager(0, badconf, badsecurityManager) var numReceivedServerMessages = 0 http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/core/src/test/scala/org/apache/spark/storage/BlockManagerReplicationSuite.scala ---------------------------------------------------------------------- diff --git a/core/src/test/scala/org/apache/spark/storage/BlockManagerReplicationSuite.scala b/core/src/test/scala/org/apache/spark/storage/BlockManagerReplicationSuite.scala index c6d7105..1461fa6 100644 --- a/core/src/test/scala/org/apache/spark/storage/BlockManagerReplicationSuite.scala +++ b/core/src/test/scala/org/apache/spark/storage/BlockManagerReplicationSuite.scala @@ -63,6 +63,7 @@ class BlockManagerReplicationSuite extends FunSuite with Matchers with BeforeAnd val transfer = new NioBlockTransferService(conf, securityMgr) val store = new BlockManager(name, actorSystem, master, serializer, maxMem, conf, mapOutputTracker, shuffleManager, transfer) + store.initialize("app-id") allStores += store store } @@ -263,6 +264,7 @@ class BlockManagerReplicationSuite extends FunSuite with Matchers with BeforeAnd when(failableTransfer.port).thenReturn(1000) val failableStore = new BlockManager("failable-store", actorSystem, master, serializer, 10000, conf, mapOutputTracker, shuffleManager, failableTransfer) + failableStore.initialize("app-id") allStores += failableStore // so that this gets stopped after test assert(master.getPeers(store.blockManagerId).toSet === Set(failableStore.blockManagerId)) http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/core/src/test/scala/org/apache/spark/storage/BlockManagerSuite.scala ---------------------------------------------------------------------- diff --git a/core/src/test/scala/org/apache/spark/storage/BlockManagerSuite.scala b/core/src/test/scala/org/apache/spark/storage/BlockManagerSuite.scala index 715b740..0782876 100644 --- a/core/src/test/scala/org/apache/spark/storage/BlockManagerSuite.scala +++ b/core/src/test/scala/org/apache/spark/storage/BlockManagerSuite.scala @@ -73,8 +73,10 @@ class BlockManagerSuite extends FunSuite with Matchers with BeforeAndAfter maxMem: Long, name: String = SparkContext.DRIVER_IDENTIFIER): BlockManager = { val transfer = new NioBlockTransferService(conf, securityMgr) - new BlockManager(name, actorSystem, master, serializer, maxMem, conf, + val manager = new BlockManager(name, actorSystem, master, serializer, maxMem, conf, mapOutputTracker, shuffleManager, transfer) + manager.initialize("app-id") + manager } before { http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/docs/security.md ---------------------------------------------------------------------- diff --git a/docs/security.md b/docs/security.md index ec05231..1e206a1 100644 --- a/docs/security.md +++ b/docs/security.md @@ -7,7 +7,6 @@ Spark currently supports authentication via a shared secret. Authentication can * For Spark on [YARN](running-on-yarn.html) deployments, configuring `spark.authenticate` to `true` will automatically handle generating and distributing the shared secret. Each application will use a unique shared secret. * For other types of Spark deployments, the Spark parameter `spark.authenticate.secret` should be configured on each of the nodes. This secret will be used by all the Master/Workers and applications. -* **IMPORTANT NOTE:** *The experimental Netty shuffle path (`spark.shuffle.use.netty`) is not secured, so do not use Netty for shuffles if running with authentication.* ## Web UI http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/network/common/src/main/java/org/apache/spark/network/TransportContext.java ---------------------------------------------------------------------- diff --git a/network/common/src/main/java/org/apache/spark/network/TransportContext.java b/network/common/src/main/java/org/apache/spark/network/TransportContext.java index a271841..5bc6e5a 100644 --- a/network/common/src/main/java/org/apache/spark/network/TransportContext.java +++ b/network/common/src/main/java/org/apache/spark/network/TransportContext.java @@ -17,12 +17,16 @@ package org.apache.spark.network; +import java.util.List; + +import com.google.common.collect.Lists; import io.netty.channel.Channel; import io.netty.channel.socket.SocketChannel; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.apache.spark.network.client.TransportClient; +import org.apache.spark.network.client.TransportClientBootstrap; import org.apache.spark.network.client.TransportClientFactory; import org.apache.spark.network.client.TransportResponseHandler; import org.apache.spark.network.protocol.MessageDecoder; @@ -64,8 +68,17 @@ public class TransportContext { this.decoder = new MessageDecoder(); } + /** + * Initializes a ClientFactory which runs the given TransportClientBootstraps prior to returning + * a new Client. Bootstraps will be executed synchronously, and must run successfully in order + * to create a Client. + */ + public TransportClientFactory createClientFactory(List<TransportClientBootstrap> bootstraps) { + return new TransportClientFactory(this, bootstraps); + } + public TransportClientFactory createClientFactory() { - return new TransportClientFactory(this); + return createClientFactory(Lists.<TransportClientBootstrap>newArrayList()); } /** Create a server which will attempt to bind to a specific port. */ http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/network/common/src/main/java/org/apache/spark/network/client/TransportClient.java ---------------------------------------------------------------------- diff --git a/network/common/src/main/java/org/apache/spark/network/client/TransportClient.java b/network/common/src/main/java/org/apache/spark/network/client/TransportClient.java index 01c143f..a08cee0 100644 --- a/network/common/src/main/java/org/apache/spark/network/client/TransportClient.java +++ b/network/common/src/main/java/org/apache/spark/network/client/TransportClient.java @@ -19,10 +19,9 @@ package org.apache.spark.network.client; import java.io.Closeable; import java.util.UUID; -import java.util.concurrent.ExecutionException; import java.util.concurrent.TimeUnit; -import java.util.concurrent.TimeoutException; +import com.google.common.base.Objects; import com.google.common.base.Preconditions; import com.google.common.base.Throwables; import com.google.common.util.concurrent.SettableFuture; @@ -186,4 +185,12 @@ public class TransportClient implements Closeable { // close is a local operation and should finish with milliseconds; timeout just to be safe channel.close().awaitUninterruptibly(10, TimeUnit.SECONDS); } + + @Override + public String toString() { + return Objects.toStringHelper(this) + .add("remoteAdress", channel.remoteAddress()) + .add("isActive", isActive()) + .toString(); + } } http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/network/common/src/main/java/org/apache/spark/network/client/TransportClientBootstrap.java ---------------------------------------------------------------------- diff --git a/network/common/src/main/java/org/apache/spark/network/client/TransportClientBootstrap.java b/network/common/src/main/java/org/apache/spark/network/client/TransportClientBootstrap.java new file mode 100644 index 0000000..65e8020 --- /dev/null +++ b/network/common/src/main/java/org/apache/spark/network/client/TransportClientBootstrap.java @@ -0,0 +1,32 @@ +/* + * 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.spark.network.client; + +/** + * A bootstrap which is executed on a TransportClient before it is returned to the user. + * This enables an initial exchange of information (e.g., SASL authentication tokens) on a once-per- + * connection basis. + * + * Since connections (and TransportClients) are reused as much as possible, it is generally + * reasonable to perform an expensive bootstrapping operation, as they often share a lifespan with + * the JVM itself. + */ +public interface TransportClientBootstrap { + /** Performs the bootstrapping operation, throwing an exception on failure. */ + public void doBootstrap(TransportClient client) throws RuntimeException; +} http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/network/common/src/main/java/org/apache/spark/network/client/TransportClientFactory.java ---------------------------------------------------------------------- diff --git a/network/common/src/main/java/org/apache/spark/network/client/TransportClientFactory.java b/network/common/src/main/java/org/apache/spark/network/client/TransportClientFactory.java index 0b4a1d8..1723fed 100644 --- a/network/common/src/main/java/org/apache/spark/network/client/TransportClientFactory.java +++ b/network/common/src/main/java/org/apache/spark/network/client/TransportClientFactory.java @@ -21,10 +21,14 @@ import java.io.Closeable; import java.lang.reflect.Field; import java.net.InetSocketAddress; import java.net.SocketAddress; +import java.util.List; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.TimeoutException; import java.util.concurrent.atomic.AtomicReference; +import com.google.common.base.Preconditions; +import com.google.common.base.Throwables; +import com.google.common.collect.Lists; import io.netty.bootstrap.Bootstrap; import io.netty.buffer.PooledByteBufAllocator; import io.netty.channel.Channel; @@ -40,6 +44,7 @@ import org.slf4j.LoggerFactory; import org.apache.spark.network.TransportContext; import org.apache.spark.network.server.TransportChannelHandler; import org.apache.spark.network.util.IOMode; +import org.apache.spark.network.util.JavaUtils; import org.apache.spark.network.util.NettyUtils; import org.apache.spark.network.util.TransportConf; @@ -47,22 +52,29 @@ import org.apache.spark.network.util.TransportConf; * Factory for creating {@link TransportClient}s by using createClient. * * The factory maintains a connection pool to other hosts and should return the same - * {@link TransportClient} for the same remote host. It also shares a single worker thread pool for - * all {@link TransportClient}s. + * TransportClient for the same remote host. It also shares a single worker thread pool for + * all TransportClients. + * + * TransportClients will be reused whenever possible. Prior to completing the creation of a new + * TransportClient, all given {@link TransportClientBootstrap}s will be run. */ public class TransportClientFactory implements Closeable { private final Logger logger = LoggerFactory.getLogger(TransportClientFactory.class); private final TransportContext context; private final TransportConf conf; + private final List<TransportClientBootstrap> clientBootstraps; private final ConcurrentHashMap<SocketAddress, TransportClient> connectionPool; private final Class<? extends Channel> socketChannelClass; private EventLoopGroup workerGroup; - public TransportClientFactory(TransportContext context) { - this.context = context; + public TransportClientFactory( + TransportContext context, + List<TransportClientBootstrap> clientBootstraps) { + this.context = Preconditions.checkNotNull(context); this.conf = context.getConf(); + this.clientBootstraps = Lists.newArrayList(Preconditions.checkNotNull(clientBootstraps)); this.connectionPool = new ConcurrentHashMap<SocketAddress, TransportClient>(); IOMode ioMode = IOMode.valueOf(conf.ioMode()); @@ -72,9 +84,12 @@ public class TransportClientFactory implements Closeable { } /** - * Create a new BlockFetchingClient connecting to the given remote host / port. + * Create a new {@link TransportClient} connecting to the given remote host / port. This will + * reuse TransportClients if they are still active and are for the same remote address. Prior + * to the creation of a new TransportClient, we will execute all {@link TransportClientBootstrap}s + * that are registered with this factory. * - * This blocks until a connection is successfully established. + * This blocks until a connection is successfully established and fully bootstrapped. * * Concurrency: This method is safe to call from multiple threads. */ @@ -104,17 +119,18 @@ public class TransportClientFactory implements Closeable { // Use pooled buffers to reduce temporary buffer allocation bootstrap.option(ChannelOption.ALLOCATOR, createPooledByteBufAllocator()); - final AtomicReference<TransportClient> client = new AtomicReference<TransportClient>(); + final AtomicReference<TransportClient> clientRef = new AtomicReference<TransportClient>(); bootstrap.handler(new ChannelInitializer<SocketChannel>() { @Override public void initChannel(SocketChannel ch) { TransportChannelHandler clientHandler = context.initializePipeline(ch); - client.set(clientHandler.getClient()); + clientRef.set(clientHandler.getClient()); } }); // Connect to the remote server + long preConnect = System.currentTimeMillis(); ChannelFuture cf = bootstrap.connect(address); if (!cf.awaitUninterruptibly(conf.connectionTimeoutMs())) { throw new RuntimeException( @@ -123,15 +139,35 @@ public class TransportClientFactory implements Closeable { throw new RuntimeException(String.format("Failed to connect to %s", address), cf.cause()); } - // Successful connection -- in the event that two threads raced to create a client, we will + TransportClient client = clientRef.get(); + assert client != null : "Channel future completed successfully with null client"; + + // Execute any client bootstraps synchronously before marking the Client as successful. + long preBootstrap = System.currentTimeMillis(); + logger.debug("Connection to {} successful, running bootstraps...", address); + try { + for (TransportClientBootstrap clientBootstrap : clientBootstraps) { + clientBootstrap.doBootstrap(client); + } + } catch (Exception e) { // catch non-RuntimeExceptions too as bootstrap may be written in Scala + long bootstrapTime = System.currentTimeMillis() - preBootstrap; + logger.error("Exception while bootstrapping client after " + bootstrapTime + " ms", e); + client.close(); + throw Throwables.propagate(e); + } + long postBootstrap = System.currentTimeMillis(); + + // Successful connection & bootstrap -- in the event that two threads raced to create a client, // use the first one that was put into the connectionPool and close the one we made here. - assert client.get() != null : "Channel future completed successfully with null client"; - TransportClient oldClient = connectionPool.putIfAbsent(address, client.get()); + TransportClient oldClient = connectionPool.putIfAbsent(address, client); if (oldClient == null) { - return client.get(); + logger.debug("Successfully created connection to {} after {} ms ({} ms spent in bootstraps)", + address, postBootstrap - preConnect, postBootstrap - preBootstrap); + return client; } else { - logger.debug("Two clients were created concurrently, second one will be disposed."); - client.get().close(); + logger.debug("Two clients were created concurrently after {} ms, second will be disposed.", + postBootstrap - preConnect); + client.close(); return oldClient; } } http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/network/common/src/main/java/org/apache/spark/network/server/NoOpRpcHandler.java ---------------------------------------------------------------------- diff --git a/network/common/src/main/java/org/apache/spark/network/server/NoOpRpcHandler.java b/network/common/src/main/java/org/apache/spark/network/server/NoOpRpcHandler.java index 5a3f003..1502b74 100644 --- a/network/common/src/main/java/org/apache/spark/network/server/NoOpRpcHandler.java +++ b/network/common/src/main/java/org/apache/spark/network/server/NoOpRpcHandler.java @@ -21,7 +21,7 @@ import org.apache.spark.network.client.RpcResponseCallback; import org.apache.spark.network.client.TransportClient; /** An RpcHandler suitable for a client-only TransportContext, which cannot receive RPCs. */ -public class NoOpRpcHandler implements RpcHandler { +public class NoOpRpcHandler extends RpcHandler { private final StreamManager streamManager; public NoOpRpcHandler() { http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/network/common/src/main/java/org/apache/spark/network/server/RpcHandler.java ---------------------------------------------------------------------- diff --git a/network/common/src/main/java/org/apache/spark/network/server/RpcHandler.java b/network/common/src/main/java/org/apache/spark/network/server/RpcHandler.java index 2369dc6..2ba92a4 100644 --- a/network/common/src/main/java/org/apache/spark/network/server/RpcHandler.java +++ b/network/common/src/main/java/org/apache/spark/network/server/RpcHandler.java @@ -23,22 +23,33 @@ import org.apache.spark.network.client.TransportClient; /** * Handler for sendRPC() messages sent by {@link org.apache.spark.network.client.TransportClient}s. */ -public interface RpcHandler { +public abstract class RpcHandler { /** * Receive a single RPC message. Any exception thrown while in this method will be sent back to * the client in string form as a standard RPC failure. * + * This method will not be called in parallel for a single TransportClient (i.e., channel). + * * @param client A channel client which enables the handler to make requests back to the sender - * of this RPC. + * of this RPC. This will always be the exact same object for a particular channel. * @param message The serialized bytes of the RPC. * @param callback Callback which should be invoked exactly once upon success or failure of the * RPC. */ - void receive(TransportClient client, byte[] message, RpcResponseCallback callback); + public abstract void receive( + TransportClient client, + byte[] message, + RpcResponseCallback callback); /** * Returns the StreamManager which contains the state about which streams are currently being * fetched by a TransportClient. */ - StreamManager getStreamManager(); + public abstract StreamManager getStreamManager(); + + /** + * Invoked when the connection associated with the given client has been invalidated. + * No further requests will come from this client. + */ + public void connectionTerminated(TransportClient client) { } } http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/network/common/src/main/java/org/apache/spark/network/server/TransportRequestHandler.java ---------------------------------------------------------------------- diff --git a/network/common/src/main/java/org/apache/spark/network/server/TransportRequestHandler.java b/network/common/src/main/java/org/apache/spark/network/server/TransportRequestHandler.java index 17fe900..1580180 100644 --- a/network/common/src/main/java/org/apache/spark/network/server/TransportRequestHandler.java +++ b/network/common/src/main/java/org/apache/spark/network/server/TransportRequestHandler.java @@ -86,6 +86,7 @@ public class TransportRequestHandler extends MessageHandler<RequestMessage> { for (long streamId : streamIds) { streamManager.connectionTerminated(streamId); } + rpcHandler.connectionTerminated(reverseClient); } @Override http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/network/common/src/main/java/org/apache/spark/network/util/TransportConf.java ---------------------------------------------------------------------- diff --git a/network/common/src/main/java/org/apache/spark/network/util/TransportConf.java b/network/common/src/main/java/org/apache/spark/network/util/TransportConf.java index a68f38e..823790d 100644 --- a/network/common/src/main/java/org/apache/spark/network/util/TransportConf.java +++ b/network/common/src/main/java/org/apache/spark/network/util/TransportConf.java @@ -55,4 +55,7 @@ public class TransportConf { /** Send buffer size (SO_SNDBUF). */ public int sendBuf() { return conf.getInt("spark.shuffle.io.sendBuffer", -1); } + + /** Timeout for a single round trip of SASL token exchange, in milliseconds. */ + public int saslRTTimeout() { return conf.getInt("spark.shuffle.sasl.timeout", 30000); } } http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/network/shuffle/src/main/java/org/apache/spark/network/sasl/SaslClientBootstrap.java ---------------------------------------------------------------------- diff --git a/network/shuffle/src/main/java/org/apache/spark/network/sasl/SaslClientBootstrap.java b/network/shuffle/src/main/java/org/apache/spark/network/sasl/SaslClientBootstrap.java new file mode 100644 index 0000000..7bc91e3 --- /dev/null +++ b/network/shuffle/src/main/java/org/apache/spark/network/sasl/SaslClientBootstrap.java @@ -0,0 +1,74 @@ +/* + * 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.spark.network.sasl; + +import io.netty.buffer.ByteBuf; +import io.netty.buffer.Unpooled; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import org.apache.spark.network.client.TransportClient; +import org.apache.spark.network.client.TransportClientBootstrap; +import org.apache.spark.network.util.TransportConf; + +/** + * Bootstraps a {@link TransportClient} by performing SASL authentication on the connection. The + * server should be setup with a {@link SaslRpcHandler} with matching keys for the given appId. + */ +public class SaslClientBootstrap implements TransportClientBootstrap { + private final Logger logger = LoggerFactory.getLogger(SaslClientBootstrap.class); + + private final TransportConf conf; + private final String appId; + private final SecretKeyHolder secretKeyHolder; + + public SaslClientBootstrap(TransportConf conf, String appId, SecretKeyHolder secretKeyHolder) { + this.conf = conf; + this.appId = appId; + this.secretKeyHolder = secretKeyHolder; + } + + /** + * Performs SASL authentication by sending a token, and then proceeding with the SASL + * challenge-response tokens until we either successfully authenticate or throw an exception + * due to mismatch. + */ + @Override + public void doBootstrap(TransportClient client) { + SparkSaslClient saslClient = new SparkSaslClient(appId, secretKeyHolder); + try { + byte[] payload = saslClient.firstToken(); + + while (!saslClient.isComplete()) { + SaslMessage msg = new SaslMessage(appId, payload); + ByteBuf buf = Unpooled.buffer(msg.encodedLength()); + msg.encode(buf); + + byte[] response = client.sendRpcSync(buf.array(), conf.saslRTTimeout()); + payload = saslClient.response(response); + } + } finally { + try { + // Once authentication is complete, the server will trust all remaining communication. + saslClient.dispose(); + } catch (RuntimeException e) { + logger.error("Error while disposing SASL client", e); + } + } + } +} http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/network/shuffle/src/main/java/org/apache/spark/network/sasl/SaslMessage.java ---------------------------------------------------------------------- diff --git a/network/shuffle/src/main/java/org/apache/spark/network/sasl/SaslMessage.java b/network/shuffle/src/main/java/org/apache/spark/network/sasl/SaslMessage.java new file mode 100644 index 0000000..5b77e18 --- /dev/null +++ b/network/shuffle/src/main/java/org/apache/spark/network/sasl/SaslMessage.java @@ -0,0 +1,74 @@ +/* + * 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.spark.network.sasl; + +import com.google.common.base.Charsets; +import io.netty.buffer.ByteBuf; + +import org.apache.spark.network.protocol.Encodable; + +/** + * Encodes a Sasl-related message which is attempting to authenticate using some credentials tagged + * with the given appId. This appId allows a single SaslRpcHandler to multiplex different + * applications which may be using different sets of credentials. + */ +class SaslMessage implements Encodable { + + /** Serialization tag used to catch incorrect payloads. */ + private static final byte TAG_BYTE = (byte) 0xEA; + + public final String appId; + public final byte[] payload; + + public SaslMessage(String appId, byte[] payload) { + this.appId = appId; + this.payload = payload; + } + + @Override + public int encodedLength() { + // tag + appIdLength + appId + payloadLength + payload + return 1 + 4 + appId.getBytes(Charsets.UTF_8).length + 4 + payload.length; + } + + @Override + public void encode(ByteBuf buf) { + buf.writeByte(TAG_BYTE); + byte[] idBytes = appId.getBytes(Charsets.UTF_8); + buf.writeInt(idBytes.length); + buf.writeBytes(idBytes); + buf.writeInt(payload.length); + buf.writeBytes(payload); + } + + public static SaslMessage decode(ByteBuf buf) { + if (buf.readByte() != TAG_BYTE) { + throw new IllegalStateException("Expected SaslMessage, received something else"); + } + + int idLength = buf.readInt(); + byte[] idBytes = new byte[idLength]; + buf.readBytes(idBytes); + + int payloadLength = buf.readInt(); + byte[] payload = new byte[payloadLength]; + buf.readBytes(payload); + + return new SaslMessage(new String(idBytes, Charsets.UTF_8), payload); + } +} http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/network/shuffle/src/main/java/org/apache/spark/network/sasl/SaslRpcHandler.java ---------------------------------------------------------------------- diff --git a/network/shuffle/src/main/java/org/apache/spark/network/sasl/SaslRpcHandler.java b/network/shuffle/src/main/java/org/apache/spark/network/sasl/SaslRpcHandler.java new file mode 100644 index 0000000..3777a18 --- /dev/null +++ b/network/shuffle/src/main/java/org/apache/spark/network/sasl/SaslRpcHandler.java @@ -0,0 +1,97 @@ +/* + * 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.spark.network.sasl; + +import java.util.concurrent.ConcurrentMap; + +import com.google.common.base.Charsets; +import com.google.common.collect.Maps; +import io.netty.buffer.ByteBuf; +import io.netty.buffer.Unpooled; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import org.apache.spark.network.client.RpcResponseCallback; +import org.apache.spark.network.client.TransportClient; +import org.apache.spark.network.protocol.Encodable; +import org.apache.spark.network.server.RpcHandler; +import org.apache.spark.network.server.StreamManager; + +/** + * RPC Handler which performs SASL authentication before delegating to a child RPC handler. + * The delegate will only receive messages if the given connection has been successfully + * authenticated. A connection may be authenticated at most once. + * + * Note that the authentication process consists of multiple challenge-response pairs, each of + * which are individual RPCs. + */ +public class SaslRpcHandler extends RpcHandler { + private final Logger logger = LoggerFactory.getLogger(SaslRpcHandler.class); + + /** RpcHandler we will delegate to for authenticated connections. */ + private final RpcHandler delegate; + + /** Class which provides secret keys which are shared by server and client on a per-app basis. */ + private final SecretKeyHolder secretKeyHolder; + + /** Maps each channel to its SASL authentication state. */ + private final ConcurrentMap<TransportClient, SparkSaslServer> channelAuthenticationMap; + + public SaslRpcHandler(RpcHandler delegate, SecretKeyHolder secretKeyHolder) { + this.delegate = delegate; + this.secretKeyHolder = secretKeyHolder; + this.channelAuthenticationMap = Maps.newConcurrentMap(); + } + + @Override + public void receive(TransportClient client, byte[] message, RpcResponseCallback callback) { + SparkSaslServer saslServer = channelAuthenticationMap.get(client); + if (saslServer != null && saslServer.isComplete()) { + // Authentication complete, delegate to base handler. + delegate.receive(client, message, callback); + return; + } + + SaslMessage saslMessage = SaslMessage.decode(Unpooled.wrappedBuffer(message)); + + if (saslServer == null) { + // First message in the handshake, setup the necessary state. + saslServer = new SparkSaslServer(saslMessage.appId, secretKeyHolder); + channelAuthenticationMap.put(client, saslServer); + } + + byte[] response = saslServer.response(saslMessage.payload); + if (saslServer.isComplete()) { + logger.debug("SASL authentication successful for channel {}", client); + } + callback.onSuccess(response); + } + + @Override + public StreamManager getStreamManager() { + return delegate.getStreamManager(); + } + + @Override + public void connectionTerminated(TransportClient client) { + SparkSaslServer saslServer = channelAuthenticationMap.remove(client); + if (saslServer != null) { + saslServer.dispose(); + } + } +} http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/network/shuffle/src/main/java/org/apache/spark/network/sasl/SecretKeyHolder.java ---------------------------------------------------------------------- diff --git a/network/shuffle/src/main/java/org/apache/spark/network/sasl/SecretKeyHolder.java b/network/shuffle/src/main/java/org/apache/spark/network/sasl/SecretKeyHolder.java new file mode 100644 index 0000000..81d5766 --- /dev/null +++ b/network/shuffle/src/main/java/org/apache/spark/network/sasl/SecretKeyHolder.java @@ -0,0 +1,35 @@ +/* + * 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.spark.network.sasl; + +/** + * Interface for getting a secret key associated with some application. + */ +public interface SecretKeyHolder { + /** + * Gets an appropriate SASL User for the given appId. + * @throws IllegalArgumentException if the given appId is not associated with a SASL user. + */ + String getSaslUser(String appId); + + /** + * Gets an appropriate SASL secret key for the given appId. + * @throws IllegalArgumentException if the given appId is not associated with a SASL secret key. + */ + String getSecretKey(String appId); +} http://git-wip-us.apache.org/repos/asf/spark/blob/23643403/network/shuffle/src/main/java/org/apache/spark/network/sasl/SparkSaslClient.java ---------------------------------------------------------------------- diff --git a/network/shuffle/src/main/java/org/apache/spark/network/sasl/SparkSaslClient.java b/network/shuffle/src/main/java/org/apache/spark/network/sasl/SparkSaslClient.java new file mode 100644 index 0000000..72ba737 --- /dev/null +++ b/network/shuffle/src/main/java/org/apache/spark/network/sasl/SparkSaslClient.java @@ -0,0 +1,138 @@ +/* + * 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.spark.network.sasl; + +import javax.security.auth.callback.Callback; +import javax.security.auth.callback.CallbackHandler; +import javax.security.auth.callback.NameCallback; +import javax.security.auth.callback.PasswordCallback; +import javax.security.auth.callback.UnsupportedCallbackException; +import javax.security.sasl.RealmCallback; +import javax.security.sasl.RealmChoiceCallback; +import javax.security.sasl.Sasl; +import javax.security.sasl.SaslClient; +import javax.security.sasl.SaslException; +import java.io.IOException; + +import com.google.common.base.Throwables; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import static org.apache.spark.network.sasl.SparkSaslServer.*; + +/** + * A SASL Client for Spark which simply keeps track of the state of a single SASL session, from the + * initial state to the "authenticated" state. This client initializes the protocol via a + * firstToken, which is then followed by a set of challenges and responses. + */ +public class SparkSaslClient { + private final Logger logger = LoggerFactory.getLogger(SparkSaslClient.class); + + private final String secretKeyId; + private final SecretKeyHolder secretKeyHolder; + private SaslClient saslClient; + + public SparkSaslClient(String secretKeyId, SecretKeyHolder secretKeyHolder) { + this.secretKeyId = secretKeyId; + this.secretKeyHolder = secretKeyHolder; + try { + this.saslClient = Sasl.createSaslClient(new String[] { DIGEST }, null, null, DEFAULT_REALM, + SASL_PROPS, new ClientCallbackHandler()); + } catch (SaslException e) { + throw Throwables.propagate(e); + } + } + + /** Used to initiate SASL handshake with server. */ + public synchronized byte[] firstToken() { + if (saslClient != null && saslClient.hasInitialResponse()) { + try { + return saslClient.evaluateChallenge(new byte[0]); + } catch (SaslException e) { + throw Throwables.propagate(e); + } + } else { + return new byte[0]; + } + } + + /** Determines whether the authentication exchange has completed. */ + public synchronized boolean isComplete() { + return saslClient != null && saslClient.isComplete(); + } + + /** + * Respond to server's SASL token. + * @param token contains server's SASL token + * @return client's response SASL token + */ + public synchronized byte[] response(byte[] token) { + try { + return saslClient != null ? saslClient.evaluateChallenge(token) : new byte[0]; + } catch (SaslException e) { + throw Throwables.propagate(e); + } + } + + /** + * Disposes of any system resources or security-sensitive information the + * SaslClient might be using. + */ + public synchronized void dispose() { + if (saslClient != null) { + try { + saslClient.dispose(); + } catch (SaslException e) { + // ignore + } finally { + saslClient = null; + } + } + } + + /** + * Implementation of javax.security.auth.callback.CallbackHandler + * that works with share secrets. + */ + private class ClientCallbackHandler implements CallbackHandler { + @Override + public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException { + + for (Callback callback : callbacks) { + if (callback instanceof NameCallback) { + logger.trace("SASL client callback: setting username"); + NameCallback nc = (NameCallback) callback; + nc.setName(encodeIdentifier(secretKeyHolder.getSaslUser(secretKeyId))); + } else if (callback instanceof PasswordCallback) { + logger.trace("SASL client callback: setting password"); + PasswordCallback pc = (PasswordCallback) callback; + pc.setPassword(encodePassword(secretKeyHolder.getSecretKey(secretKeyId))); + } else if (callback instanceof RealmCallback) { + logger.trace("SASL client callback: setting realm"); + RealmCallback rc = (RealmCallback) callback; + rc.setText(rc.getDefaultText()); + logger.info("Realm callback"); + } else if (callback instanceof RealmChoiceCallback) { + // ignore (?) + } else { + throw new UnsupportedCallbackException(callback, "Unrecognized SASL DIGEST-MD5 Callback"); + } + } + } + } +} --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@spark.apache.org For additional commands, e-mail: commits-h...@spark.apache.org
