/**
 * Copyright 2009 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package org.waveprotocol.wave.examples.fedone.waveserver;

import com.google.inject.ProvidedBy;

import org.waveprotocol.wave.federation.Proto.ProtocolWaveletDelta;

@ProvidedBy(DeltaSignerProvider.class)
public interface DeltaSigner {
  /**
   * Signs the delta. The callback to the listener may be delayed for a while if the signer
   * is accumulating deltas.
   */
  void sign(ByteStringMessage<ProtocolWaveletDelta> delta,
      CertificateManager.SignatureResultListener resultListener);
}