public virtual Response Get(string path, HttpFSParametersProvider.OperationParam op, Parameters @params, HttpServletRequest request) { UserGroupInformation user = HttpUserGroupInformation.Get(); Response response; path = MakeAbsolute(path); MDC.Put(HttpFSFileSystem.OpParam, op.Value().ToString()); MDC.Put("hostname", request.GetRemoteAddr()); switch (op.Value()) { case HttpFSFileSystem.Operation.Open: { //Invoking the command directly using an unmanaged FileSystem that is // released by the FileSystemReleaseFilter FSOperations.FSOpen command = new FSOperations.FSOpen(path); FileSystem fs = CreateFileSystem(user); InputStream @is = command.Execute(fs); long offset = @params.Get <HttpFSParametersProvider.OffsetParam>(HttpFSParametersProvider.OffsetParam .Name); long len = @params.Get <HttpFSParametersProvider.LenParam>(HttpFSParametersProvider.LenParam .Name); AuditLog.Info("[{}] offset [{}] len [{}]", new object[] { path, offset, len }); InputStreamEntity entity = new InputStreamEntity(@is, offset, len); response = Response.Ok(entity).Type(MediaType.ApplicationOctetStream).Build(); break; } case HttpFSFileSystem.Operation.Getfilestatus: { FSOperations.FSFileStatus command = new FSOperations.FSFileStatus(path); IDictionary json = FsExecute(user, command); AuditLog.Info("[{}]", path); response = Response.Ok(json).Type(MediaType.ApplicationJson).Build(); break; } case HttpFSFileSystem.Operation.Liststatus: { string filter = @params.Get <HttpFSParametersProvider.FilterParam>(HttpFSParametersProvider.FilterParam .Name); FSOperations.FSListStatus command = new FSOperations.FSListStatus(path, filter); IDictionary json = FsExecute(user, command); AuditLog.Info("[{}] filter [{}]", path, (filter != null) ? filter : "-"); response = Response.Ok(json).Type(MediaType.ApplicationJson).Build(); break; } case HttpFSFileSystem.Operation.Gethomedirectory: { EnforceRootPath(op.Value(), path); FSOperations.FSHomeDir command = new FSOperations.FSHomeDir(); JSONObject json = FsExecute(user, command); AuditLog.Info(string.Empty); response = Response.Ok(json).Type(MediaType.ApplicationJson).Build(); break; } case HttpFSFileSystem.Operation.Instrumentation: { EnforceRootPath(op.Value(), path); Groups groups = HttpFSServerWebApp.Get().Get <Groups>(); IList <string> userGroups = groups.GetGroups(user.GetShortUserName()); if (!userGroups.Contains(HttpFSServerWebApp.Get().GetAdminGroup())) { throw new AccessControlException("User not in HttpFSServer admin group"); } Instrumentation instrumentation = HttpFSServerWebApp.Get().Get <Instrumentation>(); IDictionary snapshot = instrumentation.GetSnapshot(); response = Response.Ok(snapshot).Build(); break; } case HttpFSFileSystem.Operation.Getcontentsummary: { FSOperations.FSContentSummary command = new FSOperations.FSContentSummary(path); IDictionary json = FsExecute(user, command); AuditLog.Info("[{}]", path); response = Response.Ok(json).Type(MediaType.ApplicationJson).Build(); break; } case HttpFSFileSystem.Operation.Getfilechecksum: { FSOperations.FSFileChecksum command = new FSOperations.FSFileChecksum(path); IDictionary json = FsExecute(user, command); AuditLog.Info("[{}]", path); response = Response.Ok(json).Type(MediaType.ApplicationJson).Build(); break; } case HttpFSFileSystem.Operation.Getfileblocklocations: { response = Response.Status(Response.Status.BadRequest).Build(); break; } case HttpFSFileSystem.Operation.Getaclstatus: { FSOperations.FSAclStatus command = new FSOperations.FSAclStatus(path); IDictionary json = FsExecute(user, command); AuditLog.Info("ACL status for [{}]", path); response = Response.Ok(json).Type(MediaType.ApplicationJson).Build(); break; } case HttpFSFileSystem.Operation.Getxattrs: { IList <string> xattrNames = @params.GetValues <HttpFSParametersProvider.XAttrNameParam >(HttpFSParametersProvider.XAttrNameParam.Name); XAttrCodec encoding = @params.Get <HttpFSParametersProvider.XAttrEncodingParam>(HttpFSParametersProvider.XAttrEncodingParam .Name); FSOperations.FSGetXAttrs command = new FSOperations.FSGetXAttrs(path, xattrNames, encoding); IDictionary json = FsExecute(user, command); AuditLog.Info("XAttrs for [{}]", path); response = Response.Ok(json).Type(MediaType.ApplicationJson).Build(); break; } case HttpFSFileSystem.Operation.Listxattrs: { FSOperations.FSListXAttrs command = new FSOperations.FSListXAttrs(path); IDictionary json = FsExecute(user, command); AuditLog.Info("XAttr names for [{}]", path); response = Response.Ok(json).Type(MediaType.ApplicationJson).Build(); break; } default: { throw new IOException(MessageFormat.Format("Invalid HTTP GET operation [{0}]", op .Value())); } } return(response); }