// Licensed to the Software Freedom Conservancy (SFC) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The SFC licenses this file
// to you 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.openqa.selenium.grid.sessionmap;

import org.openqa.selenium.NoSuchSessionException;
import org.openqa.selenium.grid.data.Session;
import org.openqa.selenium.remote.SessionId;
import org.openqa.selenium.remote.tracing.Tracer;

public class NullSessionMap extends SessionMap {

  public NullSessionMap(Tracer tracer) {
    super(tracer);
  }

  @Override
  public boolean add(Session session) {
    return false;
  }

  @Override
  public Session get(SessionId id) throws NoSuchSessionException {
    throw new NoSuchSessionException("No session found for " + id);
  }

  @Override
  public void remove(SessionId id) {
    // no-op
  }

  @Override
  public boolean isReady() {
    return true;
  }
}
