1 /** 2 * Copyright (c) 2014, stateful.co 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 1) Redistributions of source code must retain the above 8 * copyright notice, this list of conditions and the following 9 * disclaimer. 2) Redistributions in binary form must reproduce the above 10 * copyright notice, this list of conditions and the following 11 * disclaimer in the documentation and/or other materials provided 12 * with the distribution. 3) Neither the name of the stateful.co nor 13 * the names of its contributors may be used to endorse or promote 14 * products derived from this software without specific prior written 15 * permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT 19 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 20 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 22 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 28 * OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 package co.stateful.quota; 31 32 import co.stateful.spi.Counter; 33 import co.stateful.spi.Counters; 34 import com.jcabi.aspects.Immutable; 35 import com.jcabi.aspects.Loggable; 36 import java.io.IOException; 37 import lombok.EqualsAndHashCode; 38 import lombok.ToString; 39 40 /** 41 * Quota on counters. 42 * 43 * @author Yegor Bugayenko (yegor@tpc2.com) 44 * @version $Id$ 45 * @since 1.4 46 */ 47 @Immutable 48 @ToString 49 @EqualsAndHashCode(of = { "origin", "quota" }) 50 @Loggable(Loggable.DEBUG) 51 public final class QtCounters implements Counters { 52 53 /** 54 * Original object. 55 */ 56 private final transient Counters origin; 57 58 /** 59 * Quota to use. 60 */ 61 private final transient Quota quota; 62 63 /** 64 * Ctor. 65 * @param org Original object 66 * @param qta Quota 67 */ 68 public QtCounters(final Counters org, final Quota qta) { 69 this.origin = org; 70 this.quota = qta; 71 } 72 73 @Override 74 public Iterable<String> names() throws IOException { 75 this.quota.use("names"); 76 return this.origin.names(); 77 } 78 79 @Override 80 public void create(final String name) throws IOException { 81 this.quota.use("create"); 82 this.origin.create(name); 83 } 84 85 @Override 86 public void delete(final String name) throws IOException { 87 this.quota.use("delete"); 88 this.origin.delete(name); 89 } 90 91 @Override 92 public Counter get(final String name) { 93 return new QtCounter(this.origin.get(name), this.quota.into(name)); 94 } 95 }