1 /*

     2  * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package jdk.jfr.internal.consumer;

    27 

    28 import java.util.HashMap;

    29 import java.util.Map;

    30 import java.util.StringJoiner;

    31 

    32 final class ParserFilter {

    33     public static final ParserFilter ACCEPT_ALL = new ParserFilter(true, Map.of());

    34 

    35     private final Map<String, Long> thresholds;

    36     private final boolean acceptAll;

    37 

    38     public ParserFilter() {

    39         this(false, new HashMap<>());

    40     }

    41 

    42     private ParserFilter(boolean acceptAll, Map<String, Long> thresholds) {

    43         this.acceptAll = acceptAll;

    44         this.thresholds = thresholds;

    45     }

    46 

    47     public void setThreshold(String eventName, long nanos) {

    48         Long l = thresholds.get(eventName);

    49         if (l != null) {

    50             l = Math.min(l, nanos);

    51         } else {

    52             l = nanos;

    53         }

    54         thresholds.put(eventName, l);

    55     }

    56 

    57     public long getThreshold(String eventName) {

    58         if (acceptAll) {

    59             return 0L;

    60         }

    61         Long l = thresholds.get(eventName);

    62         if (l != null) {

    63             return l;

    64         }

    65         return -1;

    66     }

    67 

    68     public String toString() {

    69         if (acceptAll) {

    70             return "ACCEPT ALL";

    71         }

    72 

    73         StringJoiner sb = new StringJoiner(", ");

    74         for (String key : thresholds.keySet().toArray(new String[0])) {

    75             Long value = thresholds.get(key);

    76             sb.add(key + " = " + value);

    77         }

    78         return sb.toString();

    79     }

    80 }