summaryrefslogtreecommitdiff
path: root/qpid/java/broker-core/src/main/java/org/apache/qpid/server/model/ConfiguredObjectFactoryImpl.java
blob: 5026df0e191e10563167eb823191d300cc557a00 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 */
package org.apache.qpid.server.model;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import org.apache.qpid.server.plugin.ConfiguredObjectTypeFactory;
import org.apache.qpid.server.plugin.QpidServiceLoader;
import org.apache.qpid.server.store.ConfiguredObjectRecord;
import org.apache.qpid.server.store.UnresolvedConfiguredObject;
import org.apache.qpid.server.util.ServerScopedRuntimeException;

public class ConfiguredObjectFactoryImpl implements ConfiguredObjectFactory
{
    private final Map<String, String> _defaultTypes = new HashMap<String, String>();
    private final Map<String, Map<String, ConfiguredObjectTypeFactory>> _allFactories =
            new HashMap<String, Map<String, ConfiguredObjectTypeFactory>>();
    private final Map<String, Collection<String>> _supportedTypes = new HashMap<String, Collection<String>>();

    private final Model _model;

    public ConfiguredObjectFactoryImpl(Model model)
    {
        _model = model;
        QpidServiceLoader serviceLoader =
                new QpidServiceLoader();
        Iterable<ConfiguredObjectTypeFactory> allFactories =
                serviceLoader.instancesOf(ConfiguredObjectTypeFactory.class);
        for (ConfiguredObjectTypeFactory factory : allFactories)
        {
            final Class<? extends ConfiguredObject> categoryClass = factory.getCategoryClass();
            final String categoryName = categoryClass.getSimpleName();

            Map<String, ConfiguredObjectTypeFactory> categoryFactories = _allFactories.get(categoryName);
            if (categoryFactories == null)
            {
                categoryFactories = new HashMap<String, ConfiguredObjectTypeFactory>();
                _allFactories.put(categoryName, categoryFactories);
                _supportedTypes.put(categoryName, new ArrayList<String>());
                ManagedObject annotation = categoryClass.getAnnotation(ManagedObject.class);
                if (annotation != null && !"".equals(annotation.defaultType()))
                {
                    _defaultTypes.put(categoryName, annotation.defaultType());
                }
                else
                {
                    _defaultTypes.put(categoryName, categoryName);
                }

            }
            if (categoryFactories.put(factory.getType(), factory) != null)
            {
                throw new ServerScopedRuntimeException(
                        "Misconfiguration - there is more than one factory defined for class " + categoryName
                        + " with type " + factory.getType());
            }
            if (factory.getType() != null)
            {
                _supportedTypes.get(categoryName).add(factory.getType());
            }
        }
    }

    @Override
    public <X extends ConfiguredObject<X>> UnresolvedConfiguredObject<X> recover(ConfiguredObjectRecord record,
                                                                                 ConfiguredObject<?>... parents)
    {
        String category = record.getType();


        String type = (String) record.getAttributes().get(ConfiguredObject.TYPE);

        ConfiguredObjectTypeFactory<X> factory = getConfiguredObjectTypeFactory(category, type);

        if(factory == null)
        {
            throw new NoFactoryForTypeException(category, type);
        }

        return factory.recover(this, record, parents);
    }

    @Override
    public <X extends ConfiguredObject<X>> X create(Class<X> clazz,
                                                    final Map<String, Object> attributes,
                                                    final ConfiguredObject<?>... parents)
    {
        ConfiguredObjectTypeFactory<X> factory = getConfiguredObjectTypeFactory(clazz, attributes);

        return factory.create(this, attributes, parents);
    }

    @Override
    public <X extends ConfiguredObject<X>> ConfiguredObjectTypeFactory<X> getConfiguredObjectTypeFactory(final Class<X> categoryClass,
                                                                                                         Map<String, Object> attributes)
    {
        final String category = categoryClass.getSimpleName();
        Map<String, ConfiguredObjectTypeFactory> categoryFactories = _allFactories.get(category);
        if(categoryFactories == null)
        {
            throw new NoFactoryForCategoryException(category);
        }
        String type = (String) attributes.get(ConfiguredObject.TYPE);

        ConfiguredObjectTypeFactory<X> factory;

        if(type != null)
        {
            factory = getConfiguredObjectTypeFactory(category, type);
            if(factory == null)
            {
                throw new NoFactoryForTypeException(category, type);
            }
        }
        else
        {
            factory = getConfiguredObjectTypeFactory(category, null);
        }
        return factory;
    }

    @Override
    public <X extends ConfiguredObject<X>> ConfiguredObjectTypeFactory<X> getConfiguredObjectTypeFactory(final String category,
                                                                                                         final String type)
    {
        Map<String, ConfiguredObjectTypeFactory> categoryFactories = _allFactories.get(category);
        if(categoryFactories == null)
        {
            throw new NoFactoryForCategoryException(category);
        }
        ConfiguredObjectTypeFactory factory = categoryFactories.get(type);
        if(factory == null)
        {
            factory = categoryFactories.get(_defaultTypes.get(category));
            if(factory == null)
            {
                throw new NoFactoryForTypeException(category, type);
            }
        }
        return factory;
    }

    @Override
    public Collection<String> getSupportedTypes(Class<? extends ConfiguredObject> category)
    {
        return Collections.unmodifiableCollection(_supportedTypes.get(category.getSimpleName()));
    }


    @Override
    public Model getModel()
    {
        return _model;
    }

}