/**
* Execute an operation
*
* @param operation MRCOperation to execute
* @param method StageMethod to serve as the context
*/
private void execute(MRCOperation op, StageMethod method) {
final MRCRequest rq = method.getRq();
final RPCServerRequest rpcRequest = rq.getRPCRequest();
final RPCHeader header = rpcRequest.getHeader();
final RPCHeader.RequestHeader rqHeader = header.getRequestHeader();
try {
if (Logging.isDebug()) {
StringBuffer params = new StringBuffer();
Map<FieldDescriptor, Object> fieldMap =
rq.getRequestArgs() == null ? null : rq.getRequestArgs().getAllFields();
if (fieldMap != null) {
int i = 0;
for (Entry<FieldDescriptor, Object> entry : fieldMap.entrySet()) {
params.append(
entry.getKey().getName()
+ "='"
+ entry.getValue()
+ (i == fieldMap.size() - 1 ? "'" : "', "));
i++;
}
}
Logging.logMessage(
Logging.LEVEL_DEBUG,
this,
"parsed request: %s (%s)\n",
StatusPage.getOpName(rqHeader.getProcId()),
params.toString());
}
op.startRequest(rq);
} catch (UserException exc) {
reportUserError(op, rq, exc, exc.getErrno());
} catch (MRCException exc) {
Throwable cause = exc.getCause();
if (cause instanceof DatabaseException
&& ((DatabaseException) cause).getType() == ExceptionType.NOT_ALLOWED)
reportUserError(op, rq, exc, POSIXErrno.POSIX_ERROR_EPERM);
else reportServerError(op, rq, exc);
} catch (DatabaseException exc) {
if (exc.getType() == ExceptionType.NOT_ALLOWED) {
reportUserError(op, rq, exc, POSIXErrno.POSIX_ERROR_EPERM);
} else if (exc.getType() == ExceptionType.REDIRECT) {
try {
redirect(
rq,
exc.getAttachment() != null
? (String) exc.getAttachment()
: master.getReplMasterUUID());
} catch (MRCException e) {
reportServerError(op, rq, e);
}
} else reportServerError(op, rq, exc);
} catch (Throwable exc) {
reportServerError(op, rq, exc);
}
}
/**
* Parse request and execute method
*
* @param method stagemethod to execute
*/
private void parseAndExecute(StageMethod method) {
final MRCRequest rq = method.getRq();
final RPCServerRequest rpcRequest = rq.getRPCRequest();
final RPCHeader header = rpcRequest.getHeader();
final RPCHeader.RequestHeader rqHeader = header.getRequestHeader();
if (header.getMessageType() != MessageType.RPC_REQUEST) {
rq.setError(
ErrorType.GARBAGE_ARGS,
POSIXErrno.POSIX_ERROR_EIO,
"expected RPC request message type but got " + header.getMessageType());
return;
}
final MRCOperation op = operations.get(rqHeader.getProcId());
if (op == null) {
rq.setError(
ErrorType.INVALID_PROC_ID,
"requested operation (" + rqHeader.getProcId() + ") is not available on this MRC");
master.requestFinished(rq);
return;
}
if (Logging.isDebug())
Logging.logMessage(
Logging.LEVEL_DEBUG,
Category.stage,
this,
"operation for request %s: %s",
rq.toString(),
op.getClass().getSimpleName());
if (statisticsEnabled) {
_opCountMap.put(rqHeader.getProcId(), _opCountMap.get(rqHeader.getProcId()) + 1);
}
// parse request arguments
ErrorRecord error = op.parseRequestArgs(rq);
if (error != null) {
rq.setError(error);
master.requestFinished(rq);
return;
}
try {
// get the auth data if available
Auth auth =
header.getRequestHeader().hasAuthData() ? header.getRequestHeader().getAuthData() : null;
// get the user credentials
org.xtreemfs.foundation.pbrpc.generatedinterfaces.RPC.UserCredentials ctx =
op.getUserCredentials(rq);
if (ctx != null)
try {
UserCredentials cred =
master
.getAuthProvider()
.getEffectiveCredentials(ctx, rpcRequest.getConnection().getChannel());
rq.getDetails().superUser = cred.isSuperUser();
rq.getDetails().groupIds = cred.getGroupIDs();
rq.getDetails().userId = cred.getUserID();
rq.getDetails().auth = auth;
rq.getDetails().password =
auth != null && auth.hasAuthPasswd() ? auth.getAuthPasswd().getPassword() : "";
} catch (AuthenticationException ex) {
throw new UserException(POSIXErrno.POSIX_ERROR_EPERM, ex.getMessage());
}
} catch (Exception exc) {
method
.getRq()
.setError(
ErrorType.INTERNAL_SERVER_ERROR, "could not initialize authentication module", exc);
master.requestFinished(method.getRq());
return;
}
try {
if (Logging.isDebug()) {
StringBuffer params = new StringBuffer();
Map<FieldDescriptor, Object> fieldMap =
rq.getRequestArgs() == null ? null : rq.getRequestArgs().getAllFields();
if (fieldMap != null) {
int i = 0;
for (Entry<FieldDescriptor, Object> entry : fieldMap.entrySet()) {
params.append(
entry.getKey().getName()
+ "='"
+ entry.getValue()
+ (i == fieldMap.size() - 1 ? "'" : "', "));
i++;
}
}
Logging.logMessage(
Logging.LEVEL_DEBUG,
this,
"parsed request: %s (%s)\n",
StatusPage.getOpName(rqHeader.getProcId()),
params.toString());
}
op.startRequest(rq);
} catch (UserException exc) {
reportUserError(op, rq, exc, exc.getErrno());
} catch (MRCException exc) {
Throwable cause = exc.getCause();
if (cause instanceof DatabaseException
&& ((DatabaseException) cause).getType() == ExceptionType.NOT_ALLOWED)
reportUserError(op, rq, exc, POSIXErrno.POSIX_ERROR_EPERM);
else reportServerError(op, rq, exc);
} catch (DatabaseException exc) {
if (exc.getType() == ExceptionType.NOT_ALLOWED) {
reportUserError(op, rq, exc, POSIXErrno.POSIX_ERROR_EPERM);
} else if (exc.getType() == ExceptionType.REDIRECT) {
try {
redirect(
rq,
exc.getAttachment() != null
? (String) exc.getAttachment()
: master.getReplMasterUUID());
} catch (MRCException e) {
reportServerError(op, rq, e);
}
} else reportServerError(op, rq, exc);
} catch (Throwable exc) {
reportServerError(op, rq, exc);
}
}