1 /*
2 * Copyright (c) 2014, 2016, 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
69 public int hashCode() {
70 return Objects.hash(module, providerName);
71 }
72
73 @Override
74 public boolean equals(Object ob) {
75 if (!(ob instanceof ServiceProvider))
76 return false;
77 ServiceProvider that = (ServiceProvider)ob;
78 return Objects.equals(this.module, that.module)
79 && Objects.equals(this.providerName, that.providerName);
80 }
81 }
82
83 // service name -> list of providers
84 private final Map<String, List<ServiceProvider>> map = new ConcurrentHashMap<>();
85
86 private ServicesCatalog() { }
87
88 /**
89 * Creates a ServicesCatalog that supports concurrent registration and
90 * and lookup
91 */
92 public static ServicesCatalog create() {
93 return new ServicesCatalog();
94 }
95
96 /**
97 * Returns the list of service provides for the given service type
98 * name, creating it if needed.
99 */
100 private List<ServiceProvider> providers(String service) {
101 // avoid computeIfAbsent here
102 List<ServiceProvider> list = map.get(service);
103 if (list == null) {
104 list = new CopyOnWriteArrayList<>();
105 List<ServiceProvider> prev = map.putIfAbsent(service, list);
106 if (prev != null)
107 list = prev; // someone else got there
108 }
109 return list;
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1 /*
2 * Copyright (c) 2014, 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
69 public int hashCode() {
70 return Objects.hash(module, providerName);
71 }
72
73 @Override
74 public boolean equals(Object ob) {
75 if (!(ob instanceof ServiceProvider))
76 return false;
77 ServiceProvider that = (ServiceProvider)ob;
78 return Objects.equals(this.module, that.module)
79 && Objects.equals(this.providerName, that.providerName);
80 }
81 }
82
83 // service name -> list of providers
84 private final Map<String, List<ServiceProvider>> map = new ConcurrentHashMap<>();
85
86 private ServicesCatalog() { }
87
88 /**
89 * Creates a ServicesCatalog that supports concurrent registration
90 * and lookup
91 */
92 public static ServicesCatalog create() {
93 return new ServicesCatalog();
94 }
95
96 /**
97 * Returns the list of service provides for the given service type
98 * name, creating it if needed.
99 */
100 private List<ServiceProvider> providers(String service) {
101 // avoid computeIfAbsent here
102 List<ServiceProvider> list = map.get(service);
103 if (list == null) {
104 list = new CopyOnWriteArrayList<>();
105 List<ServiceProvider> prev = map.putIfAbsent(service, list);
106 if (prev != null)
107 list = prev; // someone else got there
108 }
109 return list;
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