Пример #1
0
  @Override
  public void startRequest(MRCRequest rq) throws Throwable {

    final removexattrRequest rqArgs = (removexattrRequest) rq.getRequestArgs();

    final VolumeManager vMan = master.getVolumeManager();
    final FileAccessManager faMan = master.getFileAccessManager();

    Path p = new Path(rqArgs.getVolumeName(), rqArgs.getPath());

    validateContext(rq);

    StorageManager sMan = vMan.getStorageManagerByName(p.getComp(0));
    PathResolver res = new PathResolver(sMan, p);

    // check whether the path prefix is searchable
    faMan.checkSearchPermission(
        sMan, res, rq.getDetails().userId, rq.getDetails().superUser, rq.getDetails().groupIds);

    // check whether file exists
    res.checkIfFileDoesNotExist();

    // retrieve and prepare the metadata to return
    FileMetadata file = res.getFile();

    AtomicDBUpdate update = sMan.createAtomicDBUpdate(master, rq);

    // if the attribute is a system attribute, set it

    final String attrKey = rqArgs.getName();

    // set a system attribute
    if (attrKey.startsWith("xtreemfs.")) {

      // check whether the user has privileged permissions to set
      // system attributes
      faMan.checkPrivilegedPermissions(
          sMan, file, rq.getDetails().userId, rq.getDetails().superUser, rq.getDetails().groupIds);

      MRCHelper.setSysAttrValue(
          sMan, vMan, faMan, res.getParentDirId(), file, attrKey.substring(9), "", update);
    }

    // set a user attribute
    else {

      sMan.setXAttr(file.getId(), rq.getDetails().userId, attrKey, null, update);
    }

    // update POSIX timestamps
    int time = (int) (TimeSync.getGlobalTime() / 1000);
    MRCHelper.updateFileTimes(res.getParentDirId(), file, false, true, false, sMan, time, update);

    // set the response
    rq.setResponse(timestampResponse.newBuilder().setTimestampS(time).build());

    update.execute();
  }
Пример #2
0
  @Override
  public void startRequest(MRCRequest rq) throws Throwable {

    final XCap xcap = (XCap) rq.getRequestArgs();

    // perform master redirect if necessary due to DB operation
    if (master.getReplMasterUUID() != null
        && !master.getReplMasterUUID().equals(master.getConfig().getUUID().toString()))
      throw new DatabaseException(ExceptionType.REDIRECT);

    // create a capability object to verify the capability
    Capability cap = new Capability(xcap, master.getConfig().getCapabilitySecret());

    // check whether the capability has a valid signature
    if (!cap.hasValidSignature())
      throw new UserException(
          POSIXErrno.POSIX_ERROR_EPERM, cap + " does not have a valid signature");

    // check whether the capability has expired
    if (cap.hasExpired() && !renewTimedOutCaps)
      throw new UserException(POSIXErrno.POSIX_ERROR_EPERM, cap + " has expired");

    Capability newCap =
        new Capability(
            cap.getFileId(),
            cap.getAccessMode(),
            master.getConfig().getCapabilityTimeout(),
            TimeSync.getGlobalTime() / 1000 + master.getConfig().getCapabilityTimeout(),
            cap.getClientIdentity(),
            cap.getEpochNo(),
            cap.isReplicateOnClose(),
            cap.getSnapConfig(),
            cap.getSnapTimestamp(),
            cap.getTraceConfig().getTraceRequests(),
            cap.getTraceConfig().getTracingPolicy(),
            cap.getTraceConfig().getTracingPolicyConfig(),
            cap.getVoucherSize(),
            0L,
            master.getConfig().getCapabilitySecret());

    // set the response
    rq.setResponse(newCap.getXCap());
    finishRequest(rq);
  }
Пример #3
0
  @Override
  public void startRequest(MRCRequest rq) throws Throwable {

    final statvfsRequest rqArgs = (statvfsRequest) rq.getRequestArgs();

    final VolumeManager vMan = master.getVolumeManager();
    final StorageManager sMan = vMan.getStorageManagerByName(rqArgs.getVolumeName());

    StatVFS volumeInfo = getVolumeInfo(master, sMan);
    // long knownEtag = rqArgs.getKnownEtag();

    // StatVFSSet set = new StatVFSSet();
    // if (knownEtag != volumeInfo.getEtag())
    // set.add(volumeInfo);

    // set the response
    rq.setResponse(volumeInfo);
    finishRequest(rq);
  }
Пример #4
0
  /**
   * 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);
    }
  }
Пример #5
0
  /**
   * 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);
    }
  }