001    /*
002     * Copyright (c) 2007-2014 Concurrent, Inc. All Rights Reserved.
003     *
004     * Project and contact information: http://www.cascading.org/
005     *
006     * This file is part of the Cascading project.
007     *
008     * Licensed under the Apache License, Version 2.0 (the "License");
009     * you may not use this file except in compliance with the License.
010     * You may obtain a copy of the License at
011     *
012     *     http://www.apache.org/licenses/LICENSE-2.0
013     *
014     * Unless required by applicable law or agreed to in writing, software
015     * distributed under the License is distributed on an "AS IS" BASIS,
016     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
017     * See the License for the specific language governing permissions and
018     * limitations under the License.
019     */
020    
021    package cascading.management;
022    
023    import cascading.provider.CascadingService;
024    
025    /** Interface MetricsService provides fine grained hooks for managing various metrics. */
026    public interface MetricsService extends CascadingService
027      {
028      String METRICS_SERVICE_CLASS_PROPERTY = "cascading.management.metrics.service.classname";
029    
030      void increment( String[] context, int amount );
031    
032      void set( String[] context, String value );
033    
034      void set( String[] context, int value );
035    
036      void set( String[] context, long value );
037    
038      String getString( String[] context );
039    
040      int getInt( String[] context );
041    
042      long getLong( String[] context );
043    
044      boolean compareSet( String[] context, String isValue, String toValue );
045    
046      boolean compareSet( String[] context, int isValue, int toValue );
047    
048      boolean compareSet( String[] context, long isValue, long toValue );
049      }