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);
}
