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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.shiro.guice.web;
20  
21  import com.google.common.collect.ImmutableSet;
22  import com.google.inject.Inject;
23  import com.google.inject.Injector;
24  import com.google.inject.Key;
25  import com.google.inject.Singleton;
26  import com.google.inject.spi.Dependency;
27  import com.google.inject.spi.ProviderWithDependencies;
28  import org.apache.shiro.util.AntPathMatcher;
29  import org.apache.shiro.util.PatternMatcher;
30  import org.apache.shiro.web.filter.mgt.FilterChainResolver;
31  
32  import javax.servlet.Filter;
33  import java.util.Map;
34  import java.util.Set;
35  
36  @Singleton
37  class FilterChainResolverProvider implements ProviderWithDependencies<FilterChainResolver> {
38      @Inject
39      Injector injector;
40  
41      private final Map<String, Key<? extends Filter>[]> chains;
42  
43      private final Set<Dependency<?>> dependencies;
44  
45      private PatternMatcher patternMatcher = new AntPathMatcher();
46  
47      public FilterChainResolverProvider(Map<String, Key<? extends Filter>[]> chains) {
48          this.chains = chains;
49          ImmutableSet.Builder<Dependency<?>> dependenciesBuilder = ImmutableSet.builder();
50          for (String chain : chains.keySet()) {
51              for (Key<? extends Filter> filterKey : chains.get(chain)) {
52                  dependenciesBuilder.add(Dependency.get(filterKey));
53              }
54          }
55          this.dependencies = dependenciesBuilder.build();
56      }
57  
58      @Inject(optional = true)
59      public void setPatternMatcher(PatternMatcher patternMatcher) {
60          this.patternMatcher = patternMatcher;
61      }
62  
63      public Set<Dependency<?>> getDependencies() {
64          return dependencies;
65      }
66  
67      public FilterChainResolver get() {
68          return new SimpleFilterChainResolver(chains, injector, patternMatcher);
69      }
70  
71  }