svn merge -c 1503954 FIXES: HADOOP-9734. Common protobuf definitions for GetUserMappingsProtocol, RefreshAuthorizationPolicyProtocol and RefreshUserMappingsProtocol. Contributed by Jason Lowe

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1503955 13f79535-47bb-0310-9956-ffa450edef68

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -195,6 +195,9 @@ Release 2.1.0-beta - 2013-07-02
     HADOOP-9416.  Add new symlink resolution methods in FileSystem and
     FileSystemLinkResolver.  (Andrew Wang via Colin Patrick McCabe)
 
+    HADOOP-9734. Common protobuf definitions for GetUserMappingsProtocol,
+    RefreshAuthorizationPolicyProtocol and RefreshUserMappingsProtocol (jlowe)
+
   OPTIMIZATIONS
 
     HADOOP-9150. Avoid unnecessary DNS resolution attempts for logical URIs

hadoop-common-project/hadoop-common/dev-support/findbugsExcludeFile.xml

@@ -18,6 +18,12 @@
      <Match>
        <Package name="org.apache.hadoop.record.compiler.generated" />
      </Match>
+     <Match>
+       <Package name="org.apache.hadoop.security.proto" />
+     </Match>
+     <Match>
+       <Package name="org.apache.hadoop.tools.proto" />
+     </Match>
      <Match>
        <Bug pattern="EI_EXPOSE_REP" />
      </Match>

hadoop-common-project/hadoop-common/pom.xml

@@ -321,6 +321,9 @@
                   <include>ZKFCProtocol.proto</include>
                   <include>ProtobufRpcEngine.proto</include>
                   <include>Security.proto</include>
+                  <include>GetUserMappingsProtocol.proto</include>
+                  <include>RefreshAuthorizationPolicyProtocol.proto</include>
+                  <include>RefreshUserMappingsProtocol.proto</include>
                 </includes>
               </source>
               <output>${project.build.directory}/generated-sources/java</output>

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/protocolPB/RefreshAuthorizationPolicyProtocolClientSideTranslatorPB.java

@@ -16,17 +16,18 @@
  * limitations under the License.
  */
 
-package org.apache.hadoop.hdfs.protocolPB;
+package org.apache.hadoop.security.protocolPB;
 
 import java.io.Closeable;
 import java.io.IOException;
 
-import org.apache.hadoop.hdfs.protocol.proto.RefreshAuthorizationPolicyProtocolProtos.RefreshServiceAclRequestProto;
 import org.apache.hadoop.ipc.ProtobufHelper;
 import org.apache.hadoop.ipc.ProtocolMetaInterface;
 import org.apache.hadoop.ipc.RPC;
 import org.apache.hadoop.ipc.RpcClientUtil;
 import org.apache.hadoop.security.authorize.RefreshAuthorizationPolicyProtocol;
+import org.apache.hadoop.security.proto.RefreshAuthorizationPolicyProtocolProtos.RefreshServiceAclRequestProto;
+import org.apache.hadoop.security.protocolPB.RefreshAuthorizationPolicyProtocolPB;
 
 import com.google.protobuf.RpcController;
 import com.google.protobuf.ServiceException;

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/protocolPB/RefreshAuthorizationPolicyProtocolPB.java

@@ -16,14 +16,14 @@
  * limitations under the License.
  */
 
-package org.apache.hadoop.hdfs.protocolPB;
+package org.apache.hadoop.security.protocolPB;
 
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.fs.CommonConfigurationKeys;
-import org.apache.hadoop.hdfs.protocol.proto.RefreshAuthorizationPolicyProtocolProtos.RefreshAuthorizationPolicyProtocolService;
 import org.apache.hadoop.ipc.ProtocolInfo;
 import org.apache.hadoop.security.KerberosInfo;
+import org.apache.hadoop.security.proto.RefreshAuthorizationPolicyProtocolProtos.RefreshAuthorizationPolicyProtocolService;
 
 @KerberosInfo(
     serverPrincipal=CommonConfigurationKeys.HADOOP_SECURITY_SERVICE_USER_NAME_KEY)

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/protocolPB/RefreshAuthorizationPolicyProtocolServerSideTranslatorPB.java

@@ -16,13 +16,13 @@
  * limitations under the License.
  */
 
-package org.apache.hadoop.hdfs.protocolPB;
+package org.apache.hadoop.security.protocolPB;
 
 import java.io.IOException;
 
-import org.apache.hadoop.hdfs.protocol.proto.RefreshAuthorizationPolicyProtocolProtos.RefreshServiceAclRequestProto;
-import org.apache.hadoop.hdfs.protocol.proto.RefreshAuthorizationPolicyProtocolProtos.RefreshServiceAclResponseProto;
 import org.apache.hadoop.security.authorize.RefreshAuthorizationPolicyProtocol;
+import org.apache.hadoop.security.proto.RefreshAuthorizationPolicyProtocolProtos.RefreshServiceAclRequestProto;
+import org.apache.hadoop.security.proto.RefreshAuthorizationPolicyProtocolProtos.RefreshServiceAclResponseProto;
 
 import com.google.protobuf.RpcController;
 import com.google.protobuf.ServiceException;

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/protocolPB/RefreshUserMappingsProtocolClientSideTranslatorPB.java

@@ -16,18 +16,18 @@
  * limitations under the License.
  */
 
-package org.apache.hadoop.hdfs.protocolPB;
+package org.apache.hadoop.security.protocolPB;
 
 import java.io.Closeable;
 import java.io.IOException;
 
-import org.apache.hadoop.hdfs.protocol.proto.RefreshUserMappingsProtocolProtos.RefreshSuperUserGroupsConfigurationRequestProto;
-import org.apache.hadoop.hdfs.protocol.proto.RefreshUserMappingsProtocolProtos.RefreshUserToGroupsMappingsRequestProto;
 import org.apache.hadoop.ipc.ProtobufHelper;
 import org.apache.hadoop.ipc.ProtocolMetaInterface;
 import org.apache.hadoop.ipc.RPC;
 import org.apache.hadoop.ipc.RpcClientUtil;
 import org.apache.hadoop.security.RefreshUserMappingsProtocol;
+import org.apache.hadoop.security.proto.RefreshUserMappingsProtocolProtos.RefreshSuperUserGroupsConfigurationRequestProto;
+import org.apache.hadoop.security.proto.RefreshUserMappingsProtocolProtos.RefreshUserToGroupsMappingsRequestProto;
 
 import com.google.protobuf.RpcController;
 import com.google.protobuf.ServiceException;

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/protocolPB/RefreshUserMappingsProtocolPB.java

@@ -16,14 +16,14 @@
  * limitations under the License.
  */
 
-package org.apache.hadoop.hdfs.protocolPB;
+package org.apache.hadoop.security.protocolPB;
 
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.fs.CommonConfigurationKeys;
-import org.apache.hadoop.hdfs.protocol.proto.RefreshUserMappingsProtocolProtos.RefreshUserMappingsProtocolService;
 import org.apache.hadoop.ipc.ProtocolInfo;
 import org.apache.hadoop.security.KerberosInfo;
+import org.apache.hadoop.security.proto.RefreshUserMappingsProtocolProtos.RefreshUserMappingsProtocolService;
 
 @KerberosInfo(
     serverPrincipal=CommonConfigurationKeys.HADOOP_SECURITY_SERVICE_USER_NAME_KEY)

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/protocolPB/RefreshUserMappingsProtocolServerSideTranslatorPB.java

@@ -16,15 +16,15 @@
  * limitations under the License.
  */
 
-package org.apache.hadoop.hdfs.protocolPB;
+package org.apache.hadoop.security.protocolPB;
 
 import java.io.IOException;
 
-import org.apache.hadoop.hdfs.protocol.proto.RefreshUserMappingsProtocolProtos.RefreshSuperUserGroupsConfigurationRequestProto;
-import org.apache.hadoop.hdfs.protocol.proto.RefreshUserMappingsProtocolProtos.RefreshSuperUserGroupsConfigurationResponseProto;
-import org.apache.hadoop.hdfs.protocol.proto.RefreshUserMappingsProtocolProtos.RefreshUserToGroupsMappingsRequestProto;
-import org.apache.hadoop.hdfs.protocol.proto.RefreshUserMappingsProtocolProtos.RefreshUserToGroupsMappingsResponseProto;
 import org.apache.hadoop.security.RefreshUserMappingsProtocol;
+import org.apache.hadoop.security.proto.RefreshUserMappingsProtocolProtos.RefreshSuperUserGroupsConfigurationRequestProto;
+import org.apache.hadoop.security.proto.RefreshUserMappingsProtocolProtos.RefreshSuperUserGroupsConfigurationResponseProto;
+import org.apache.hadoop.security.proto.RefreshUserMappingsProtocolProtos.RefreshUserToGroupsMappingsRequestProto;
+import org.apache.hadoop.security.proto.RefreshUserMappingsProtocolProtos.RefreshUserToGroupsMappingsResponseProto;
 
 import com.google.protobuf.RpcController;
 import com.google.protobuf.ServiceException;

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tools/protocolPB/GetUserMappingsProtocolClientSideTranslatorPB.java

@@ -16,17 +16,17 @@
  * limitations under the License.
  */
 
-package org.apache.hadoop.hdfs.protocolPB;
+package org.apache.hadoop.tools.protocolPB;
 
 import java.io.Closeable;
 import java.io.IOException;
-import org.apache.hadoop.hdfs.protocol.proto.GetUserMappingsProtocolProtos.GetGroupsForUserRequestProto;
-import org.apache.hadoop.hdfs.protocol.proto.GetUserMappingsProtocolProtos.GetGroupsForUserResponseProto;
 import org.apache.hadoop.ipc.ProtobufHelper;
 import org.apache.hadoop.ipc.ProtocolMetaInterface;
 import org.apache.hadoop.ipc.RPC;
 import org.apache.hadoop.ipc.RpcClientUtil;
 import org.apache.hadoop.tools.GetUserMappingsProtocol;
+import org.apache.hadoop.tools.proto.GetUserMappingsProtocolProtos.GetGroupsForUserRequestProto;
+import org.apache.hadoop.tools.proto.GetUserMappingsProtocolProtos.GetGroupsForUserResponseProto;
 
 import com.google.protobuf.RpcController;
 import com.google.protobuf.ServiceException;

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tools/protocolPB/GetUserMappingsProtocolPB.java

@@ -16,14 +16,14 @@
  * limitations under the License.
  */
 
-package org.apache.hadoop.hdfs.protocolPB;
+package org.apache.hadoop.tools.protocolPB;
 
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.fs.CommonConfigurationKeys;
-import org.apache.hadoop.hdfs.protocol.proto.GetUserMappingsProtocolProtos.GetUserMappingsProtocolService;
 import org.apache.hadoop.ipc.ProtocolInfo;
 import org.apache.hadoop.security.KerberosInfo;
+import org.apache.hadoop.tools.proto.GetUserMappingsProtocolProtos.GetUserMappingsProtocolService;
 
 @KerberosInfo(
     serverPrincipal=CommonConfigurationKeys.HADOOP_SECURITY_SERVICE_USER_NAME_KEY)

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tools/protocolPB/GetUserMappingsProtocolServerSideTranslatorPB.java

@@ -16,13 +16,13 @@
  * limitations under the License.
  */
 
-package org.apache.hadoop.hdfs.protocolPB;
+package org.apache.hadoop.tools.protocolPB;
 
 import java.io.IOException;
 
-import org.apache.hadoop.hdfs.protocol.proto.GetUserMappingsProtocolProtos.GetGroupsForUserRequestProto;
-import org.apache.hadoop.hdfs.protocol.proto.GetUserMappingsProtocolProtos.GetGroupsForUserResponseProto;
 import org.apache.hadoop.tools.GetUserMappingsProtocol;
+import org.apache.hadoop.tools.proto.GetUserMappingsProtocolProtos.GetGroupsForUserRequestProto;
+import org.apache.hadoop.tools.proto.GetUserMappingsProtocolProtos.GetGroupsForUserResponseProto;
 
 import com.google.protobuf.RpcController;
 import com.google.protobuf.ServiceException;

hadoop-common-project/hadoop-common/src/main/proto/GetUserMappingsProtocol.proto

@@ -22,11 +22,11 @@
  * for what changes are allowed for a *stable* .proto interface.
  */
 
-option java_package = "org.apache.hadoop.hdfs.protocol.proto";
+option java_package = "org.apache.hadoop.tools.proto";
 option java_outer_classname = "GetUserMappingsProtocolProtos";
 option java_generic_services = true;
 option java_generate_equals_and_hash = true;
-package hadoop.hdfs;
+package hadoop.common;
 
 /**
  *  Get groups for user request.
@@ -44,8 +44,7 @@ message GetGroupsForUserResponseProto {
 
 
 /**
- * Protocol implemented by the Name Node and Job Tracker which maps users to
+ * Protocol which maps users to groups.
- * groups.
  */
 service GetUserMappingsProtocolService {
   /**

hadoop-common-project/hadoop-common/src/main/proto/RefreshAuthorizationPolicyProtocol.proto

@@ -22,11 +22,11 @@
  * for what changes are allowed for a *stable* .proto interface.
  */
 
-option java_package = "org.apache.hadoop.hdfs.protocol.proto";
+option java_package = "org.apache.hadoop.security.proto";
 option java_outer_classname = "RefreshAuthorizationPolicyProtocolProtos";
 option java_generic_services = true;
 option java_generate_equals_and_hash = true;
-package hadoop.hdfs;
+package hadoop.common;
 
 /**
  *  Refresh service acl request.

hadoop-common-project/hadoop-common/src/main/proto/RefreshUserMappingsProtocol.proto

@@ -22,11 +22,11 @@
  * for what changes are allowed for a *stable* .proto interface.
  */
 
-option java_package = "org.apache.hadoop.hdfs.protocol.proto";
+option java_package = "org.apache.hadoop.security.proto";
 option java_outer_classname = "RefreshUserMappingsProtocolProtos";
 option java_generic_services = true;
 option java_generate_equals_and_hash = true;
-package hadoop.hdfs;
+package hadoop.common;
 
 /**
  *  Refresh user to group mappings request.

hadoop-hdfs-project/hadoop-hdfs/pom.xml

@@ -419,12 +419,9 @@ http://maven.apache.org/xsd/maven-4.0.0.xsd">
               <source>
                 <directory>${basedir}/src/main/proto</directory>
                 <includes>
-                  <include>GetUserMappingsProtocol.proto</include>
                   <include>HAZKInfo.proto</include>
                   <include>InterDatanodeProtocol.proto</include>
                   <include>JournalProtocol.proto</include>
-                  <include>RefreshAuthorizationPolicyProtocol.proto</include>
-                  <include>RefreshUserMappingsProtocol.proto</include>
                   <include>datatransfer.proto</include>
                   <include>hdfs.proto</include>
                 </includes>

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/NameNodeProxies.java

@@ -36,16 +36,10 @@
 import org.apache.hadoop.hdfs.protocol.HdfsConstants;
 import org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolPB;
 import org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB;
-import org.apache.hadoop.hdfs.protocolPB.GetUserMappingsProtocolClientSideTranslatorPB;
-import org.apache.hadoop.hdfs.protocolPB.GetUserMappingsProtocolPB;
 import org.apache.hadoop.hdfs.protocolPB.JournalProtocolPB;
 import org.apache.hadoop.hdfs.protocolPB.JournalProtocolTranslatorPB;
 import org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolPB;
 import org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolTranslatorPB;
-import org.apache.hadoop.hdfs.protocolPB.RefreshAuthorizationPolicyProtocolClientSideTranslatorPB;
-import org.apache.hadoop.hdfs.protocolPB.RefreshAuthorizationPolicyProtocolPB;
-import org.apache.hadoop.hdfs.protocolPB.RefreshUserMappingsProtocolClientSideTranslatorPB;
-import org.apache.hadoop.hdfs.protocolPB.RefreshUserMappingsProtocolPB;
 import org.apache.hadoop.hdfs.server.namenode.NameNode;
 import org.apache.hadoop.hdfs.server.namenode.SafeModeException;
 import org.apache.hadoop.hdfs.server.protocol.JournalProtocol;
@@ -66,7 +60,13 @@
 import org.apache.hadoop.security.SecurityUtil;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.authorize.RefreshAuthorizationPolicyProtocol;
+import org.apache.hadoop.security.protocolPB.RefreshAuthorizationPolicyProtocolClientSideTranslatorPB;
+import org.apache.hadoop.security.protocolPB.RefreshAuthorizationPolicyProtocolPB;
+import org.apache.hadoop.security.protocolPB.RefreshUserMappingsProtocolClientSideTranslatorPB;
+import org.apache.hadoop.security.protocolPB.RefreshUserMappingsProtocolPB;
 import org.apache.hadoop.tools.GetUserMappingsProtocol;
+import org.apache.hadoop.tools.protocolPB.GetUserMappingsProtocolClientSideTranslatorPB;
+import org.apache.hadoop.tools.protocolPB.GetUserMappingsProtocolPB;
 
 import com.google.common.base.Preconditions;
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeRpcServer.java

@@ -78,22 +78,13 @@
 import org.apache.hadoop.hdfs.protocol.UnresolvedPathException;
 import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.ClientNamenodeProtocol;
 import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.DatanodeProtocolService;
-import org.apache.hadoop.hdfs.protocol.proto.GetUserMappingsProtocolProtos.GetUserMappingsProtocolService;
 import org.apache.hadoop.hdfs.protocol.proto.NamenodeProtocolProtos.NamenodeProtocolService;
-import org.apache.hadoop.hdfs.protocol.proto.RefreshAuthorizationPolicyProtocolProtos.RefreshAuthorizationPolicyProtocolService;
-import org.apache.hadoop.hdfs.protocol.proto.RefreshUserMappingsProtocolProtos.RefreshUserMappingsProtocolService;
 import org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolPB;
 import org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB;
 import org.apache.hadoop.hdfs.protocolPB.DatanodeProtocolPB;
 import org.apache.hadoop.hdfs.protocolPB.DatanodeProtocolServerSideTranslatorPB;
-import org.apache.hadoop.hdfs.protocolPB.GetUserMappingsProtocolPB;
-import org.apache.hadoop.hdfs.protocolPB.GetUserMappingsProtocolServerSideTranslatorPB;
 import org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolPB;
 import org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolServerSideTranslatorPB;
-import org.apache.hadoop.hdfs.protocolPB.RefreshAuthorizationPolicyProtocolPB;
-import org.apache.hadoop.hdfs.protocolPB.RefreshAuthorizationPolicyProtocolServerSideTranslatorPB;
-import org.apache.hadoop.hdfs.protocolPB.RefreshUserMappingsProtocolPB;
-import org.apache.hadoop.hdfs.protocolPB.RefreshUserMappingsProtocolServerSideTranslatorPB;
 import org.apache.hadoop.hdfs.security.token.block.DataEncryptionKey;
 import org.apache.hadoop.hdfs.security.token.block.ExportedBlockKeys;
 import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier;
@@ -129,8 +120,17 @@
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.authorize.AuthorizationException;
 import org.apache.hadoop.security.authorize.ProxyUsers;
+import org.apache.hadoop.security.proto.RefreshAuthorizationPolicyProtocolProtos.RefreshAuthorizationPolicyProtocolService;
+import org.apache.hadoop.security.proto.RefreshUserMappingsProtocolProtos.RefreshUserMappingsProtocolService;
+import org.apache.hadoop.security.protocolPB.RefreshAuthorizationPolicyProtocolPB;
+import org.apache.hadoop.security.protocolPB.RefreshAuthorizationPolicyProtocolServerSideTranslatorPB;
+import org.apache.hadoop.security.protocolPB.RefreshUserMappingsProtocolPB;
+import org.apache.hadoop.security.protocolPB.RefreshUserMappingsProtocolServerSideTranslatorPB;
 import org.apache.hadoop.security.token.SecretManager.InvalidToken;
 import org.apache.hadoop.security.token.Token;
+import org.apache.hadoop.tools.proto.GetUserMappingsProtocolProtos.GetUserMappingsProtocolService;
+import org.apache.hadoop.tools.protocolPB.GetUserMappingsProtocolPB;
+import org.apache.hadoop.tools.protocolPB.GetUserMappingsProtocolServerSideTranslatorPB;
 import org.apache.hadoop.util.VersionInfo;
 import org.apache.hadoop.util.VersionUtil;
 

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestIsMethodSupported.java

@@ -27,12 +27,9 @@
 import org.apache.hadoop.hdfs.protocolPB.ClientDatanodeProtocolTranslatorPB;
 import org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB;
 import org.apache.hadoop.hdfs.protocolPB.DatanodeProtocolClientSideTranslatorPB;
-import org.apache.hadoop.hdfs.protocolPB.GetUserMappingsProtocolClientSideTranslatorPB;
 import org.apache.hadoop.hdfs.protocolPB.InterDatanodeProtocolTranslatorPB;
 import org.apache.hadoop.hdfs.protocolPB.JournalProtocolTranslatorPB;
 import org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolTranslatorPB;
-import org.apache.hadoop.hdfs.protocolPB.RefreshAuthorizationPolicyProtocolClientSideTranslatorPB;
-import org.apache.hadoop.hdfs.protocolPB.RefreshUserMappingsProtocolClientSideTranslatorPB;
 import org.apache.hadoop.hdfs.server.datanode.DataNode;
 import org.apache.hadoop.hdfs.server.protocol.JournalProtocol;
 import org.apache.hadoop.hdfs.server.protocol.NamenodeProtocol;
@@ -40,7 +37,10 @@
 import org.apache.hadoop.security.RefreshUserMappingsProtocol;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.authorize.RefreshAuthorizationPolicyProtocol;
+import org.apache.hadoop.security.protocolPB.RefreshAuthorizationPolicyProtocolClientSideTranslatorPB;
+import org.apache.hadoop.security.protocolPB.RefreshUserMappingsProtocolClientSideTranslatorPB;
 import org.apache.hadoop.tools.GetUserMappingsProtocol;
+import org.apache.hadoop.tools.protocolPB.GetUserMappingsProtocolClientSideTranslatorPB;
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
 import org.junit.Test;