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Posted to commits@shiro.apache.org by ka...@apache.org on 2015/03/17 03:43:00 UTC

svn commit: r1667165 - in /shiro/branches/1.2.x: ./ support/guice/ support/guice/src/main/java/org/apache/shiro/guice/ support/guice/src/main/java/org/apache/shiro/guice/web/ support/guice/src/test/java/org/apache/shiro/guice/web/

Author: kaosko
Date: Tue Mar 17 02:43:00 2015
New Revision: 1667165

URL: http://svn.apache.org/r1667165
Log:
FIXED - SHIRO-496: Update shior.guice dependency 
- apply Kevin Sweeney's patch to remove Guava with changes. The original patch has a bug in ShiroWebModule.setupFilterChainConfig, add a rudimentary fix

Modified:
    shiro/branches/1.2.x/pom.xml
    shiro/branches/1.2.x/support/guice/pom.xml
    shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/BeanTypeListener.java
    shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/ShiroModule.java
    shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/web/AbstractInjectionProvider.java
    shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/web/FilterChainResolverProvider.java
    shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/web/ShiroWebModule.java
    shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/web/SimpleFilterChainResolver.java
    shiro/branches/1.2.x/support/guice/src/test/java/org/apache/shiro/guice/web/SimpleFilterChainTest.java

Modified: shiro/branches/1.2.x/pom.xml
URL: http://svn.apache.org/viewvc/shiro/branches/1.2.x/pom.xml?rev=1667165&r1=1667164&r2=1667165&view=diff
==============================================================================
--- shiro/branches/1.2.x/pom.xml (original)
+++ shiro/branches/1.2.x/pom.xml Tue Mar 17 02:43:00 2015
@@ -89,7 +89,6 @@
         <slf4j.version>1.6.4</slf4j.version>
         <spring.version>3.1.0.RELEASE</spring.version>
         <guice.version>3.0</guice.version>
-        <guava.version>r09</guava.version>
 
         <!-- Test 3rd-party dependencies: -->
         <easymock.version>3.1</easymock.version>
@@ -798,11 +797,6 @@
                 </exclusions>
             </dependency>
             <dependency>
-                <groupId>com.google.guava</groupId>
-                <artifactId>guava</artifactId>
-                <version>${guava.version}</version>
-            </dependency>
-            <dependency>
                 <groupId>com.google.inject</groupId>
                 <artifactId>guice</artifactId>
                 <version>${guice.version}</version>

Modified: shiro/branches/1.2.x/support/guice/pom.xml
URL: http://svn.apache.org/viewvc/shiro/branches/1.2.x/support/guice/pom.xml?rev=1667165&r1=1667164&r2=1667165&view=diff
==============================================================================
--- shiro/branches/1.2.x/support/guice/pom.xml (original)
+++ shiro/branches/1.2.x/support/guice/pom.xml Tue Mar 17 02:43:00 2015
@@ -46,10 +46,6 @@
             <optional>true</optional>
         </dependency>
         <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-        </dependency>
-        <dependency>
             <groupId>com.google.inject</groupId>
             <artifactId>guice</artifactId>
         </dependency>

Modified: shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/BeanTypeListener.java
URL: http://svn.apache.org/viewvc/shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/BeanTypeListener.java?rev=1667165&r1=1667164&r2=1667165&view=diff
==============================================================================
--- shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/BeanTypeListener.java (original)
+++ shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/BeanTypeListener.java Tue Mar 17 02:43:00 2015
@@ -18,8 +18,23 @@
  */
 package org.apache.shiro.guice;
 
-import com.google.common.primitives.Primitives;
-import com.google.inject.*;
+import java.beans.PropertyDescriptor;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Modifier;
+import java.lang.reflect.Type;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+
+import com.google.inject.Binder;
+import com.google.inject.ConfigurationException;
+import com.google.inject.Injector;
+import com.google.inject.Key;
+import com.google.inject.MembersInjector;
+import com.google.inject.Provider;
+import com.google.inject.TypeLiteral;
 import com.google.inject.matcher.Matcher;
 import com.google.inject.matcher.Matchers;
 import com.google.inject.multibindings.MapBinder;
@@ -27,16 +42,10 @@ import com.google.inject.name.Names;
 import com.google.inject.spi.TypeEncounter;
 import com.google.inject.spi.TypeListener;
 import com.google.inject.util.Types;
+
 import org.apache.commons.beanutils.PropertyUtils;
 import org.apache.shiro.SecurityUtils;
 
-import java.beans.PropertyDescriptor;
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Modifier;
-import java.lang.reflect.Type;
-import java.util.HashMap;
-import java.util.Map;
-
 /**
  * TypeListener that injects setter methods on Shiro objects.
  */
@@ -54,6 +63,17 @@ class BeanTypeListener implements TypeLi
     private static final String BEAN_TYPE_MAP_NAME = "__SHIRO_BEAN_TYPES__";
     static final Key<?> MAP_KEY = Key.get(Types.mapOf(TypeLiteral.class, BeanTypeKey.class), Names.named(BEAN_TYPE_MAP_NAME));
 
+    private static final Set<Class<?>> WRAPPER_TYPES = new HashSet<Class<?>>(Arrays.asList(
+        Byte.class,
+        Boolean.class,
+        Character.class,
+        Double.class,
+        Float.class,
+        Integer.class,
+        Long.class,
+        Short.class,
+        Void.class));
+
     public <I> void hear(TypeLiteral<I> type, final TypeEncounter<I> encounter) {
         PropertyDescriptor propertyDescriptors[] = PropertyUtils.getPropertyDescriptors(type.getRawType());
         final Map<PropertyDescriptor, Key<?>> propertyDependencies = new HashMap<PropertyDescriptor, Key<?>>(propertyDescriptors.length);
@@ -112,7 +132,7 @@ class BeanTypeListener implements TypeLi
     private static boolean requiresName(Type propertyType) {
         if (propertyType instanceof Class) {
             Class<?> aClass = (Class<?>) propertyType;
-            return aClass.isPrimitive() || aClass.isEnum() || Primitives.isWrapperType(aClass) || CharSequence.class.isAssignableFrom(aClass);
+            return aClass.isPrimitive() || aClass.isEnum() || WRAPPER_TYPES.contains(aClass) || CharSequence.class.isAssignableFrom(aClass);
         } else {
             return false;
         }

Modified: shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/ShiroModule.java
URL: http://svn.apache.org/viewvc/shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/ShiroModule.java?rev=1667165&r1=1667164&r2=1667165&view=diff
==============================================================================
--- shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/ShiroModule.java (original)
+++ shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/ShiroModule.java Tue Mar 17 02:43:00 2015
@@ -18,14 +18,13 @@
  */
 package org.apache.shiro.guice;
 
-import com.google.common.collect.Sets;
-import com.google.inject.Key;
-import com.google.inject.PrivateModule;
-import com.google.inject.TypeLiteral;
-import com.google.inject.binder.AnnotatedBindingBuilder;
-import com.google.inject.binder.LinkedBindingBuilder;
-import com.google.inject.multibindings.Multibinder;
-import com.google.inject.util.Types;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Set;
+import java.util.WeakHashMap;
+
+import javax.annotation.PreDestroy;
+
 import org.apache.shiro.config.ConfigurationException;
 import org.apache.shiro.env.Environment;
 import org.apache.shiro.mgt.DefaultSecurityManager;
@@ -35,10 +34,13 @@ import org.apache.shiro.session.mgt.Defa
 import org.apache.shiro.session.mgt.SessionManager;
 import org.apache.shiro.util.Destroyable;
 
-import javax.annotation.PreDestroy;
-import java.util.Collection;
-import java.util.Set;
-import java.util.WeakHashMap;
+import com.google.inject.Key;
+import com.google.inject.PrivateModule;
+import com.google.inject.TypeLiteral;
+import com.google.inject.binder.AnnotatedBindingBuilder;
+import com.google.inject.binder.LinkedBindingBuilder;
+import com.google.inject.multibindings.Multibinder;
+import com.google.inject.util.Types;
 
 
 /**
@@ -48,8 +50,7 @@ import java.util.WeakHashMap;
  */
 public abstract class ShiroModule extends PrivateModule implements Destroyable {
 
-    private Set<Destroyable> destroyables = Sets.newSetFromMap(new WeakHashMap<Destroyable, Boolean>());
-
+	private Set<Destroyable> destroyables = Collections.newSetFromMap(new WeakHashMap<Destroyable, Boolean>());
     public void configure() {
         // setup security manager
         bindSecurityManager(bind(SecurityManager.class));

Modified: shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/web/AbstractInjectionProvider.java
URL: http://svn.apache.org/viewvc/shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/web/AbstractInjectionProvider.java?rev=1667165&r1=1667164&r2=1667165&view=diff
==============================================================================
--- shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/web/AbstractInjectionProvider.java (original)
+++ shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/web/AbstractInjectionProvider.java Tue Mar 17 02:43:00 2015
@@ -18,7 +18,11 @@
  */
 package org.apache.shiro.guice.web;
 
-import com.google.common.collect.ImmutableSet;
+import java.lang.reflect.Constructor;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
+
 import com.google.inject.Inject;
 import com.google.inject.Injector;
 import com.google.inject.Key;
@@ -27,9 +31,6 @@ import com.google.inject.spi.Dependency;
 import com.google.inject.spi.InjectionPoint;
 import com.google.inject.spi.ProviderWithDependencies;
 
-import java.lang.reflect.Constructor;
-import java.util.Set;
-
 class AbstractInjectionProvider<T> implements ProviderWithDependencies<T> {
     private Key<T> key;
 
@@ -43,12 +44,12 @@ class AbstractInjectionProvider<T> imple
         this.key = key;
         constructorInjectionPoint = InjectionPoint.forConstructorOf(key.getTypeLiteral());
 
-        ImmutableSet.Builder<Dependency<?>> dependencyBuilder = ImmutableSet.builder();
+        Set<Dependency<?>> dependencyBuilder = new HashSet<Dependency<?>>();
         dependencyBuilder.addAll(constructorInjectionPoint.getDependencies());
         for (InjectionPoint injectionPoint : InjectionPoint.forInstanceMethodsAndFields(key.getTypeLiteral())) {
             dependencyBuilder.addAll(injectionPoint.getDependencies());
         }
-        this.dependencies = dependencyBuilder.build();
+        this.dependencies = Collections.unmodifiableSet(dependencyBuilder);
     }
 
     public T get() {

Modified: shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/web/FilterChainResolverProvider.java
URL: http://svn.apache.org/viewvc/shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/web/FilterChainResolverProvider.java?rev=1667165&r1=1667164&r2=1667165&view=diff
==============================================================================
--- shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/web/FilterChainResolverProvider.java (original)
+++ shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/web/FilterChainResolverProvider.java Tue Mar 17 02:43:00 2015
@@ -18,21 +18,24 @@
  */
 package org.apache.shiro.guice.web;
 
-import com.google.common.collect.ImmutableSet;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+
+import javax.servlet.Filter;
+
 import com.google.inject.Inject;
 import com.google.inject.Injector;
 import com.google.inject.Key;
 import com.google.inject.Singleton;
 import com.google.inject.spi.Dependency;
 import com.google.inject.spi.ProviderWithDependencies;
+
 import org.apache.shiro.util.AntPathMatcher;
 import org.apache.shiro.util.PatternMatcher;
 import org.apache.shiro.web.filter.mgt.FilterChainResolver;
 
-import javax.servlet.Filter;
-import java.util.Map;
-import java.util.Set;
-
 @Singleton
 class FilterChainResolverProvider implements ProviderWithDependencies<FilterChainResolver> {
     @Inject
@@ -46,13 +49,13 @@ class FilterChainResolverProvider implem
 
     public FilterChainResolverProvider(Map<String, Key<? extends Filter>[]> chains) {
         this.chains = chains;
-        ImmutableSet.Builder<Dependency<?>> dependenciesBuilder = ImmutableSet.builder();
+        Set<Dependency<?>> dependenciesBuilder = new HashSet<Dependency<?>>();
         for (String chain : chains.keySet()) {
             for (Key<? extends Filter> filterKey : chains.get(chain)) {
                 dependenciesBuilder.add(Dependency.get(filterKey));
             }
         }
-        this.dependencies = dependenciesBuilder.build();
+        this.dependencies = Collections.unmodifiableSet(dependenciesBuilder);
     }
 
     @Inject(optional = true)

Modified: shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/web/ShiroWebModule.java
URL: http://svn.apache.org/viewvc/shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/web/ShiroWebModule.java?rev=1667165&r1=1667164&r2=1667165&view=diff
==============================================================================
--- shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/web/ShiroWebModule.java (original)
+++ shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/web/ShiroWebModule.java Tue Mar 17 02:43:00 2015
@@ -18,34 +18,43 @@
  */
 package org.apache.shiro.guice.web;
 
-import com.google.common.collect.HashBasedTable;
-import com.google.common.collect.Table;
-import com.google.inject.Binder;
-import com.google.inject.Key;
-import com.google.inject.TypeLiteral;
-import com.google.inject.binder.AnnotatedBindingBuilder;
-import com.google.inject.name.Names;
-import com.google.inject.servlet.ServletModule;
-import org.apache.shiro.guice.ShiroModule;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+import javax.servlet.Filter;
+import javax.servlet.ServletContext;
+
 import org.apache.shiro.config.ConfigurationException;
 import org.apache.shiro.env.Environment;
+import org.apache.shiro.guice.ShiroModule;
 import org.apache.shiro.mgt.SecurityManager;
 import org.apache.shiro.session.mgt.SessionManager;
 import org.apache.shiro.web.env.WebEnvironment;
 import org.apache.shiro.web.filter.PathMatchingFilter;
-import org.apache.shiro.web.filter.authc.*;
-import org.apache.shiro.web.filter.authz.*;
+import org.apache.shiro.web.filter.authc.AnonymousFilter;
+import org.apache.shiro.web.filter.authc.BasicHttpAuthenticationFilter;
+import org.apache.shiro.web.filter.authc.FormAuthenticationFilter;
+import org.apache.shiro.web.filter.authc.LogoutFilter;
+import org.apache.shiro.web.filter.authc.UserFilter;
+import org.apache.shiro.web.filter.authz.HttpMethodPermissionFilter;
+import org.apache.shiro.web.filter.authz.PermissionsAuthorizationFilter;
+import org.apache.shiro.web.filter.authz.PortFilter;
+import org.apache.shiro.web.filter.authz.RolesAuthorizationFilter;
+import org.apache.shiro.web.filter.authz.SslFilter;
 import org.apache.shiro.web.filter.mgt.FilterChainResolver;
 import org.apache.shiro.web.filter.session.NoSessionCreationFilter;
 import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
 import org.apache.shiro.web.mgt.WebSecurityManager;
 import org.apache.shiro.web.session.mgt.ServletContainerSessionManager;
 
-import javax.servlet.Filter;
-import javax.servlet.ServletContext;
-import java.util.Collection;
-import java.util.LinkedHashMap;
-import java.util.Map;
+import com.google.inject.Binder;
+import com.google.inject.Key;
+import com.google.inject.TypeLiteral;
+import com.google.inject.binder.AnnotatedBindingBuilder;
+import com.google.inject.name.Names;
+import com.google.inject.servlet.ServletModule;
 
 /**
  * Sets up Shiro lifecycles within Guice, enables the injecting of Shiro objects, and binds a default
@@ -131,7 +140,7 @@ public abstract class ShiroWebModule ext
     }
 
     private void setupFilterChainConfigs() {
-        Table<Key<? extends PathMatchingFilter>, String, String> configs = HashBasedTable.create();
+        Map<Key<? extends PathMatchingFilter>, Map<String, String>> configs = new HashMap<Key<? extends PathMatchingFilter>, Map<String, String>>();
 
         for (Map.Entry<String, Key<? extends Filter>[]> filterChain : filterChains.entrySet()) {
             for (int i = 0; i < filterChain.getValue().length; i++) {
@@ -143,14 +152,16 @@ public abstract class ShiroWebModule ext
                     if (!PathMatchingFilter.class.isAssignableFrom(key.getTypeLiteral().getRawType())) {
                         throw new ConfigurationException("Config information requires a PathMatchingFilter - can't apply to " + key.getTypeLiteral().getRawType());
                     }
-                    configs.put(castToPathMatching(key), filterChain.getKey(), configKey.getConfigValue());
+                    if (configs.get(castToPathMatching(key)) == null) configs.put(castToPathMatching(key), new HashMap<String, String>());
+                    configs.get(castToPathMatching(key)).put(filterChain.getKey(), configKey.getConfigValue());
                 } else if (PathMatchingFilter.class.isAssignableFrom(key.getTypeLiteral().getRawType())) {
-                    configs.put(castToPathMatching(key), filterChain.getKey(), "");
+	                  if (configs.get(castToPathMatching(key)) == null) configs.put(castToPathMatching(key), new HashMap<String, String>());
+                    configs.get(castToPathMatching(key)).put(filterChain.getKey(), "");
                 }
             }
         }
-        for (Key<? extends PathMatchingFilter> filterKey : configs.rowKeySet()) {
-            bindPathMatchingFilter(filterKey, configs.row(filterKey));
+        for (Key<? extends PathMatchingFilter> filterKey : configs.keySet()) {
+            bindPathMatchingFilter(filterKey, configs.get(filterKey));
         }
     }
 

Modified: shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/web/SimpleFilterChainResolver.java
URL: http://svn.apache.org/viewvc/shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/web/SimpleFilterChainResolver.java?rev=1667165&r1=1667164&r2=1667165&view=diff
==============================================================================
--- shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/web/SimpleFilterChainResolver.java (original)
+++ shiro/branches/1.2.x/support/guice/src/main/java/org/apache/shiro/guice/web/SimpleFilterChainResolver.java Tue Mar 17 02:43:00 2015
@@ -18,19 +18,21 @@
  */
 package org.apache.shiro.guice.web;
 
-import com.google.common.base.Function;
-import com.google.common.collect.Iterators;
-import com.google.inject.Injector;
-import com.google.inject.Key;
-import org.apache.shiro.util.PatternMatcher;
-import org.apache.shiro.web.filter.mgt.FilterChainResolver;
-import org.apache.shiro.web.util.WebUtils;
+import java.util.Arrays;
+import java.util.Iterator;
+import java.util.Map;
 
 import javax.servlet.Filter;
 import javax.servlet.FilterChain;
 import javax.servlet.ServletRequest;
 import javax.servlet.ServletResponse;
-import java.util.Map;
+
+import com.google.inject.Injector;
+import com.google.inject.Key;
+
+import org.apache.shiro.util.PatternMatcher;
+import org.apache.shiro.web.filter.mgt.FilterChainResolver;
+import org.apache.shiro.web.util.WebUtils;
 
 class SimpleFilterChainResolver implements FilterChainResolver {
     private final Map<String, Key<? extends Filter>[]> chains;
@@ -47,12 +49,20 @@ class SimpleFilterChainResolver implemen
         String path = WebUtils.getPathWithinApplication(WebUtils.toHttp(request));
         for (final String pathPattern : chains.keySet()) {
             if (patternMatcher.matches(pathPattern, path)) {
-                return new SimpleFilterChain(originalChain, Iterators.transform(Iterators.forArray(chains.get(pathPattern)),
-                        new Function<Key<? extends Filter>, Filter>() {
-                            public Filter apply(Key<? extends Filter> input) {
-                                return injector.getInstance(input);
-                            }
-                        }));
+                final Iterator<Key<? extends Filter>> chain = Arrays.asList(chains.get(pathPattern)).iterator();
+                return new SimpleFilterChain(originalChain, new Iterator<Filter>() {
+                    public boolean hasNext() {
+                        return chain.hasNext();
+                    }
+
+                    public Filter next() {
+                        return injector.getInstance(chain.next());
+                    }
+
+                    public void remove() {
+                        throw new UnsupportedOperationException();
+                    }
+                });
             }
         }
         return null;

Modified: shiro/branches/1.2.x/support/guice/src/test/java/org/apache/shiro/guice/web/SimpleFilterChainTest.java
URL: http://svn.apache.org/viewvc/shiro/branches/1.2.x/support/guice/src/test/java/org/apache/shiro/guice/web/SimpleFilterChainTest.java?rev=1667165&r1=1667164&r2=1667165&view=diff
==============================================================================
--- shiro/branches/1.2.x/support/guice/src/test/java/org/apache/shiro/guice/web/SimpleFilterChainTest.java (original)
+++ shiro/branches/1.2.x/support/guice/src/test/java/org/apache/shiro/guice/web/SimpleFilterChainTest.java Tue Mar 17 02:43:00 2015
@@ -18,17 +18,22 @@
  */
 package org.apache.shiro.guice.web;
 
-import com.google.common.collect.Iterators;
-import org.easymock.Capture;
-import org.easymock.IMocksControl;
-import org.junit.Test;
+import java.util.Arrays;
 
 import javax.servlet.Filter;
 import javax.servlet.FilterChain;
 import javax.servlet.ServletRequest;
 import javax.servlet.ServletResponse;
 
-import static org.easymock.EasyMock.*;
+import org.easymock.Capture;
+import org.easymock.IMocksControl;
+import org.junit.Test;
+
+import static org.easymock.EasyMock.and;
+import static org.easymock.EasyMock.anyObject;
+import static org.easymock.EasyMock.capture;
+import static org.easymock.EasyMock.createStrictControl;
+import static org.easymock.EasyMock.same;
 
 public class SimpleFilterChainTest {
     @Test
@@ -50,7 +55,7 @@ public class SimpleFilterChainTest {
 
         ctrl.replay();
 
-        SimpleFilterChain underTest = new SimpleFilterChain(originalChain, Iterators.forArray(filter1, filter2));
+        SimpleFilterChain underTest = new SimpleFilterChain(originalChain, Arrays.asList(filter1, filter2).iterator());
 
         // all we actually care about is that, if we keep calling the filter chain, everything is called in the right
         // order - we don't care what fc actually contains