HttpServicesClient.java

   1 /*
   2  * Copyright (C) 2010 Mathieu Baudier <mbaudier@argeo.org>
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.argeo.slc.server.client;
  18
  19 import java.util.Map;
  20
  21 import org.argeo.slc.Condition;
  22
  23 /** Abstraction of the access to HTTP services . */
  24 public interface HttpServicesClient {
  25         /** Call service, failing if it is not available. */
  26         public <T> T callService(String path, Map<String, String> parameters);
  27
  28         /**
  29          * Call service, waiting and retrying until the timeout is reached if it is
  30          * not immediately available.
  31          *
  32          * @param path
  33          *            service path
  34          * @param condition
  35          *            if not null, a condition to be applied on received object,
  36          *            keep trying if it returns false.
  37          * @param timeout
  38          *            timeout after which an exception is thrown
  39          */
  40         public <T> T callServiceSafe(String path, Map<String, String> parameters,
  41                         Condition<T> condition, Long timeout);
  42
  43 }