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From m...@apache.org
Subject [26/64] [partial] knox git commit: KNOX-998 - Refactoring save 1
Date Fri, 01 Sep 2017 13:17:24 GMT
http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/impl/xml/XmlUrlRewriteStreamFilter.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/impl/xml/XmlUrlRewriteStreamFilter.java b/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/impl/xml/XmlUrlRewriteStreamFilter.java
deleted file mode 100644
index d1c693e..0000000
--- a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/impl/xml/XmlUrlRewriteStreamFilter.java
+++ /dev/null
@@ -1,67 +0,0 @@
-/**
- * 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.hadoop.gateway.filter.rewrite.impl.xml;
-
-import org.apache.commons.io.input.ReaderInputStream;
-import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriteFilterContentDescriptor;
-import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriter;
-import org.apache.hadoop.gateway.filter.rewrite.spi.UrlRewriteStreamFilter;
-import org.apache.hadoop.gateway.util.urltemplate.Resolver;
-
-import javax.xml.parsers.ParserConfigurationException;
-import javax.xml.stream.XMLStreamException;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-
-public class XmlUrlRewriteStreamFilter implements UrlRewriteStreamFilter {
-
-  private static String[] TYPES = new String[]{ "application/xml", "text/xml", "*/xml" };
-  private static String[] NAMES = new String[]{ null };
-
-  @Override
-  public String[] getTypes() {
-    return TYPES;
-  }
-
-  @Override
-  public String[] getNames() {
-    return NAMES;
-  }
-
-  @Override
-  public InputStream filter(
-      InputStream stream,
-      String encoding,
-      UrlRewriter rewriter,
-      Resolver resolver,
-      UrlRewriter.Direction direction,
-      UrlRewriteFilterContentDescriptor config )
-          throws IOException {
-    try {
-      return new ReaderInputStream(
-          new XmlUrlRewriteFilterReader(
-              new InputStreamReader( stream, encoding ), rewriter, resolver, direction, config ), encoding );
-    } catch( ParserConfigurationException e ) {
-      throw new IOException( e );
-    } catch( XMLStreamException e ) {
-      throw new IOException( e );
-    }
-  }
-
-}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteActionDescriptorBase.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteActionDescriptorBase.java b/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteActionDescriptorBase.java
deleted file mode 100644
index 27085df..0000000
--- a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteActionDescriptorBase.java
+++ /dev/null
@@ -1,83 +0,0 @@
-/**
- * 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.hadoop.gateway.filter.rewrite.spi;
-
-import org.apache.hadoop.gateway.filter.rewrite.ext.UrlRewriteActionDescriptor;
-
-public abstract class UrlRewriteActionDescriptorBase
-    extends UrlRewriteStepDescriptorBase<UrlRewriteActionDescriptor>
-    implements UrlRewriteActionDescriptor {
-
-  private String operation;
-  private String parameter;
-
-  protected UrlRewriteActionDescriptorBase( String type ) {
-    super( type );
-  }
-
-  @Override
-  public String operation() {
-    return operation;
-  }
-
-  @Override
-  public UrlRewriteActionDescriptor operation( String operation ) {
-    this.operation = operation;
-    return this;
-  }
-
-  public void setOperation( String operation ) {
-    operation( operation );
-  }
-
-  public void setOper( String operation ) {
-    operation( operation );
-  }
-
-  public void setOp( String operation ) {
-    operation( operation );
-  }
-
-  public String getOper() {
-    return operation();
-  }
-
-  @Override
-  public String parameter() {
-    return parameter;
-  }
-
-  @Override
-  public UrlRewriteActionDescriptor parameter( String parameter ) {
-    this.parameter = parameter;
-    return this;
-  }
-
-  public void setParameter( String parameter ) {
-    parameter( parameter );
-  }
-
-  public void setParam( String parameter ) {
-    parameter( parameter );
-  }
-
-  public String getParam() {
-    return parameter();
-  }
-
-}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteContext.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteContext.java b/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteContext.java
deleted file mode 100644
index 092a6b0..0000000
--- a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteContext.java
+++ /dev/null
@@ -1,45 +0,0 @@
-/**
- * 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.hadoop.gateway.filter.rewrite.spi;
-
-import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriter;
-import org.apache.hadoop.gateway.util.urltemplate.Evaluator;
-import org.apache.hadoop.gateway.util.urltemplate.Params;
-import org.apache.hadoop.gateway.util.urltemplate.Template;
-
-public interface UrlRewriteContext {
-
-  UrlRewriter.Direction getDirection();
-
-  Template getOriginalUrl();
-
-  Template getCurrentUrl();
-
-  void setCurrentUrl( Template url );
-
-  /**
-   * Adds parameters to the rewrite context and replaces some of them if they already exist
-   * @param parameters the parameters to be added or replaced
-   */
-  void addParameters( Params parameters );
-
-  Params getParameters();
-
-  Evaluator getEvaluator();
-
-}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteFlowDescriptorBase.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteFlowDescriptorBase.java b/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteFlowDescriptorBase.java
deleted file mode 100644
index 97f8c33..0000000
--- a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteFlowDescriptorBase.java
+++ /dev/null
@@ -1,114 +0,0 @@
-/**
- * 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.hadoop.gateway.filter.rewrite.spi;
-
-import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriteFlowDescriptor;
-import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriteStepDescriptor;
-import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriteStepDescriptorFactory;
-import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriteStepFlow;
-
-import java.util.ArrayList;
-import java.util.List;
-
-public abstract class UrlRewriteFlowDescriptorBase<T> extends UrlRewriteStepDescriptorBase<T> implements UrlRewriteFlowDescriptor<T> {
-
-  private UrlRewriteStepFlow flow;
-  private List<UrlRewriteStepDescriptor> steps = new ArrayList<UrlRewriteStepDescriptor>();
-
-  public UrlRewriteFlowDescriptorBase( String type ) {
-    super( type );
-  }
-
-  @Override
-  public UrlRewriteStepFlow flow() {
-    return flow;
-  }
-
-  @SuppressWarnings( "unchecked" )
-  @Override
-  public <F extends UrlRewriteFlowDescriptor<?>> F flow( String flow ) {
-    setFlow( flow );
-    return (F)this;
-  }
-
-  @SuppressWarnings( "unchecked" )
-  @Override
-  public <F extends UrlRewriteFlowDescriptor<?>> F flow( UrlRewriteStepFlow flow ) {
-    setFlow( flow );
-    return (F)this;
-  }
-
-  public void setFlow( UrlRewriteStepFlow flow ) {
-    this.flow = flow;
-  }
-
-  public void setFlow( String flow ) {
-    flow = flow.trim().toUpperCase();
-    this.flow = Enum.valueOf( UrlRewriteStepFlow.class, flow );
-  }
-
-  public String getFlow() {
-    String str = null;
-    if( flow != null ) {
-      str = flow.toString();
-    }
-    return str;
-  }
-
-  @Override
-  public List<UrlRewriteStepDescriptor> steps() {
-    return steps;
-  }
-
-//  @Override
-//  public UrlRewriteMatchDescriptor addMatch() {
-//    UrlRewriteMatchDescriptor step = new UrlRewriteMatchDescriptorExt();
-//    steps.add( step );
-//    return step;
-//  }
-//
-//  @Override
-//  public UrlRewriteCheckDescriptor addCheck() {
-//    UrlRewriteCheckDescriptor step = new UrlRewriteCheckDescriptorExt();
-//    steps.add( step );
-//    return step;
-//  }
-//
-//  @Override
-//  public UrlRewriteControlDescriptor addControl() {
-//    UrlRewriteControlDescriptor step = new UrlRewriteControlDescriptorExt();
-//    steps.add( step );
-//    return step;
-//  }
-//
-//  @Override
-//  public UrlRewriteActionDescriptor addAction() {
-//    UrlRewriteActionDescriptor step = new UrlRewriteActionDescriptorBase();
-//    steps.add( step );
-//    return step;
-//  }
-
-  @SuppressWarnings( "unchecked" )
-  @Override
-  public <T extends UrlRewriteStepDescriptor<?>> T addStep( String type ) {
-    T step = (T)UrlRewriteStepDescriptorFactory.create( type );
-    steps.add( step );
-    return (T)step;
-  }
-
-}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteFunctionProcessor.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteFunctionProcessor.java b/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteFunctionProcessor.java
deleted file mode 100644
index cf5a331..0000000
--- a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteFunctionProcessor.java
+++ /dev/null
@@ -1,31 +0,0 @@
-/**
- * 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.hadoop.gateway.filter.rewrite.spi;
-
-import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriteEnvironment;
-import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriteFunctionDescriptor;
-
-public interface UrlRewriteFunctionProcessor<T extends UrlRewriteFunctionDescriptor> extends UrlRewriteResolver {
-
-  String name();
-
-  void initialize( UrlRewriteEnvironment environment, T descriptor ) throws Exception;
-
-  void destroy() throws Exception;
-
-}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteFunctionProcessorBase.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteFunctionProcessorBase.java b/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteFunctionProcessorBase.java
deleted file mode 100644
index 987e889..0000000
--- a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteFunctionProcessorBase.java
+++ /dev/null
@@ -1,31 +0,0 @@
-/**
- * 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.hadoop.gateway.filter.rewrite.spi;
-
-import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriteEnvironment;
-import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriteFunctionDescriptor;
-
-public abstract class UrlRewriteFunctionProcessorBase<T extends UrlRewriteFunctionDescriptor> implements UrlRewriteFunctionProcessor<T> {
-
-  public void initialize( UrlRewriteEnvironment environment, T descriptor ) throws Exception {
-  }
-
-  public void destroy() throws Exception {
-  }
-
-}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteResolver.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteResolver.java b/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteResolver.java
deleted file mode 100644
index ec07b5b..0000000
--- a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteResolver.java
+++ /dev/null
@@ -1,26 +0,0 @@
-/**
- * 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.hadoop.gateway.filter.rewrite.spi;
-
-import java.util.List;
-
-public interface UrlRewriteResolver {
-
-  List<String> resolve( UrlRewriteContext context, List<String> parameter ) throws Exception;
-
-}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteRulesExporter.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteRulesExporter.java b/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteRulesExporter.java
deleted file mode 100644
index b393ce7..0000000
--- a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteRulesExporter.java
+++ /dev/null
@@ -1,31 +0,0 @@
-/**
- * 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.hadoop.gateway.filter.rewrite.spi;
-
-import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriteRulesDescriptor;
-
-import java.io.IOException;
-import java.io.Writer;
-
-public interface UrlRewriteRulesExporter {
-
-  String getFormat();
-
-  void store( UrlRewriteRulesDescriptor rules, Writer writer ) throws IOException;
-
-}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteRulesImporter.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteRulesImporter.java b/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteRulesImporter.java
deleted file mode 100644
index d342f15..0000000
--- a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteRulesImporter.java
+++ /dev/null
@@ -1,31 +0,0 @@
-/**
- * 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.hadoop.gateway.filter.rewrite.spi;
-
-import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriteRulesDescriptor;
-
-import java.io.IOException;
-import java.io.Reader;
-
-public interface UrlRewriteRulesImporter {
-
-  String getFormat();
-
-  UrlRewriteRulesDescriptor load( Reader reader ) throws IOException;
-
-}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteStepDescriptorBase.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteStepDescriptorBase.java b/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteStepDescriptorBase.java
deleted file mode 100644
index 4d520fe..0000000
--- a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteStepDescriptorBase.java
+++ /dev/null
@@ -1,46 +0,0 @@
-/**
- * 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.hadoop.gateway.filter.rewrite.spi;
-
-import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriteStepDescriptor;
-
-public abstract class UrlRewriteStepDescriptorBase<T> implements UrlRewriteStepDescriptor<T> {
-
-  private String type;
-
-  public UrlRewriteStepDescriptorBase( String type ) {
-    this.type = type;
-  }
-
-  @Override
-  public String type() {
-    return type;
-  }
-
-  @Override
-  @SuppressWarnings( "unchecked" )
-  public T type( String type ) {
-    this.type = type;
-    return (T)this;
-  }
-
-  public void setType( String type ) {
-    this.type = type;
-  }
-
-}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteStepProcessor.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteStepProcessor.java b/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteStepProcessor.java
deleted file mode 100644
index 806ec1f..0000000
--- a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteStepProcessor.java
+++ /dev/null
@@ -1,33 +0,0 @@
-/**
- * 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.hadoop.gateway.filter.rewrite.spi;
-
-import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriteEnvironment;
-import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriteStepDescriptor;
-
-public interface UrlRewriteStepProcessor<T extends UrlRewriteStepDescriptor> {
-
-  String getType();
-
-  void initialize( UrlRewriteEnvironment environment, T descriptor ) throws Exception;
-
-  UrlRewriteStepStatus process( UrlRewriteContext context ) throws Exception;
-
-  void destroy() throws Exception;
-
-}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteStepStatus.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteStepStatus.java b/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteStepStatus.java
deleted file mode 100644
index 619652f..0000000
--- a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteStepStatus.java
+++ /dev/null
@@ -1,20 +0,0 @@
-/**
- * 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.hadoop.gateway.filter.rewrite.spi;
-
-public enum UrlRewriteStepStatus { SUCCESS, FAILURE, FINISHED }

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteStreamFilter.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteStreamFilter.java b/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteStreamFilter.java
deleted file mode 100644
index 413b94b..0000000
--- a/gateway-provider-rewrite/src/main/java/org/apache/hadoop/gateway/filter/rewrite/spi/UrlRewriteStreamFilter.java
+++ /dev/null
@@ -1,45 +0,0 @@
-/**
- * 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.hadoop.gateway.filter.rewrite.spi;
-
-import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriteFilterContentDescriptor;
-import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriter;
-import org.apache.hadoop.gateway.util.urltemplate.Resolver;
-
-import java.io.IOException;
-import java.io.InputStream;
-
-import static org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriter.Direction;
-
-// The rewriter will try to find either a stream or reader createFilter for the mime/type and name.
-public interface UrlRewriteStreamFilter {
-
-  String[] getTypes();
-
-  String[] getNames();
-
-  InputStream filter(
-      InputStream stream,
-      String encoding,
-      UrlRewriter rewriter,
-      Resolver resolver,
-      Direction direction,
-      UrlRewriteFilterContentDescriptor config )
-          throws IOException;
-
-}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/CookieScopeServletFilter.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/CookieScopeServletFilter.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/CookieScopeServletFilter.java
new file mode 100644
index 0000000..93f2dc8
--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/CookieScopeServletFilter.java
@@ -0,0 +1,47 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+import java.io.IOException;
+
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.apache.knox.gateway.filter.AbstractGatewayFilter;
+import org.apache.knox.gateway.filter.rewrite.impl.CookieScopeResponseWrapper;
+
+public class CookieScopeServletFilter extends AbstractGatewayFilter {
+
+  private String gatewayPath;
+
+  @Override
+  public void init( FilterConfig filterConfig ) throws ServletException {
+    super.init( filterConfig );
+    gatewayPath = filterConfig.getInitParameter("gateway.path");
+  }
+
+  @Override
+  protected void doFilter( HttpServletRequest request, HttpServletResponse response, FilterChain chain )
+      throws IOException, ServletException {
+    chain.doFilter( request, new CookieScopeResponseWrapper(response, gatewayPath));
+  }
+
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/FrontendFunctionDescriptor.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/FrontendFunctionDescriptor.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/FrontendFunctionDescriptor.java
new file mode 100644
index 0000000..c3b63cd
--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/FrontendFunctionDescriptor.java
@@ -0,0 +1,31 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+public class FrontendFunctionDescriptor implements UrlRewriteFunctionDescriptor<FrontendFunctionDescriptor> {
+
+  public static final String FUNCTION_NAME = "frontend";
+
+  public static final String FRONTEND_URI_ATTRIBUTE = "org.apache.knox.gateway.frontend.uri";
+
+  @Override
+  public String name() {
+    return FUNCTION_NAME;
+  }
+
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteEnvironment.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteEnvironment.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteEnvironment.java
new file mode 100644
index 0000000..754d752
--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteEnvironment.java
@@ -0,0 +1,31 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+import org.apache.knox.gateway.util.urltemplate.Resolver;
+
+import java.io.IOException;
+import java.net.URL;
+
+public interface UrlRewriteEnvironment extends Resolver {
+
+  URL getResource( String name ) throws IOException;
+
+  <T> T getAttribute( String name );
+
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterApplyDescriptor.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterApplyDescriptor.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterApplyDescriptor.java
new file mode 100644
index 0000000..4722322
--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterApplyDescriptor.java
@@ -0,0 +1,27 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+public interface UrlRewriteFilterApplyDescriptor
+    extends UrlRewriteFilterPathDescriptor<UrlRewriteFilterApplyDescriptor> {
+
+  String rule();
+
+  UrlRewriteFilterApplyDescriptor rule( String rule );
+
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterBufferDescriptor.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterBufferDescriptor.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterBufferDescriptor.java
new file mode 100644
index 0000000..f67cd83
--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterBufferDescriptor.java
@@ -0,0 +1,25 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+public interface UrlRewriteFilterBufferDescriptor
+    extends UrlRewriteFilterPathDescriptor, UrlRewriteFilterGroupDescriptor {
+
+  public UrlRewriteFilterDetectDescriptor addDetect( String path, String value );
+
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterContentDescriptor.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterContentDescriptor.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterContentDescriptor.java
new file mode 100644
index 0000000..84b22eb
--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterContentDescriptor.java
@@ -0,0 +1,32 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+public interface UrlRewriteFilterContentDescriptor extends UrlRewriteFilterGroupDescriptor {
+
+  String type();
+
+  String asType();
+
+  UrlRewriteFilterContentDescriptor type( String type );
+
+  UrlRewriteFilterContentDescriptor asType( String type );
+
+  UrlRewriteFilterBufferDescriptor addBuffer( String path );
+
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterDescriptor.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterDescriptor.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterDescriptor.java
new file mode 100644
index 0000000..3d9db56
--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterDescriptor.java
@@ -0,0 +1,37 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+import javax.activation.MimeType;
+import java.util.List;
+
+public interface UrlRewriteFilterDescriptor {
+
+  String name();
+
+  UrlRewriteFilterDescriptor name( String name );
+
+  List<UrlRewriteFilterContentDescriptor> getContents();
+
+  UrlRewriteFilterContentDescriptor getContent( String type );
+
+  UrlRewriteFilterContentDescriptor getContent( MimeType type );
+
+  UrlRewriteFilterContentDescriptor addContent( String type );
+
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterDetectDescriptor.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterDetectDescriptor.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterDetectDescriptor.java
new file mode 100644
index 0000000..e2dec91
--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterDetectDescriptor.java
@@ -0,0 +1,33 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+public interface UrlRewriteFilterDetectDescriptor
+    extends UrlRewriteFilterPathDescriptor, UrlRewriteFilterGroupDescriptor {
+
+  String value();
+
+  UrlRewriteFilterDetectDescriptor value( String value );
+
+  <C> C compiledValue();
+
+  UrlRewriteFilterDetectDescriptor compiledValue( String compiledValue );
+
+  <C> C compiledValue( Compiler<C> compiler );
+
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterGroupDescriptor.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterGroupDescriptor.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterGroupDescriptor.java
new file mode 100644
index 0000000..49064e7
--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterGroupDescriptor.java
@@ -0,0 +1,30 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+import java.util.List;
+
+public interface UrlRewriteFilterGroupDescriptor extends UrlRewriteFilterPathDescriptor {
+
+  public List<UrlRewriteFilterPathDescriptor> getSelectors();
+
+  public void addSelector( UrlRewriteFilterPathDescriptor selector );
+
+  UrlRewriteFilterApplyDescriptor addApply( String path, String rule );
+
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterPathDescriptor.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterPathDescriptor.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterPathDescriptor.java
new file mode 100644
index 0000000..d94e288
--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterPathDescriptor.java
@@ -0,0 +1,39 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+public interface UrlRewriteFilterPathDescriptor<T> {
+
+  String path();
+
+  T path( String path );
+
+  <C> C compiledPath();
+
+  T compiledPath( Object compilePath );
+
+  <C> C compiledPath( Compiler<C> compiler );
+
+  interface Compiler<C> {
+    // The returned compiled version of the expression must be thread safe.
+    // The compiled param will be the result of the last successful call to this method for this instance of
+    // the descriptor node.
+    C compile( String expression, C compiled );
+  }
+
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterScopeDescriptor.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterScopeDescriptor.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterScopeDescriptor.java
new file mode 100644
index 0000000..5058dbf
--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFilterScopeDescriptor.java
@@ -0,0 +1,22 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+public interface UrlRewriteFilterScopeDescriptor
+    extends UrlRewriteFilterPathDescriptor, UrlRewriteFilterGroupDescriptor {
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFlowDescriptor.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFlowDescriptor.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFlowDescriptor.java
new file mode 100644
index 0000000..7d48916
--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFlowDescriptor.java
@@ -0,0 +1,42 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+import java.util.List;
+
+public interface UrlRewriteFlowDescriptor<T> extends UrlRewriteStepDescriptor<T> {
+
+  UrlRewriteStepFlow flow();
+
+  <F extends UrlRewriteFlowDescriptor<?>> F flow( String flow );
+
+  <F extends UrlRewriteFlowDescriptor<?>> F flow( UrlRewriteStepFlow flow );
+
+  List<UrlRewriteStepDescriptor> steps();
+
+//  UrlRewriteMatchDescriptor addMatch();
+//
+//  UrlRewriteCheckDescriptor addCheck();
+//
+//  UrlRewriteActionDescriptor addAction();
+//
+//  UrlRewriteControlDescriptor addControl();
+
+  <T extends UrlRewriteStepDescriptor<?>> T addStep( String type );
+
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFunctionDescriptor.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFunctionDescriptor.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFunctionDescriptor.java
new file mode 100644
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--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFunctionDescriptor.java
@@ -0,0 +1,24 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+public interface UrlRewriteFunctionDescriptor<T> {
+
+  String name();
+
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFunctionDescriptorFactory.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFunctionDescriptorFactory.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFunctionDescriptorFactory.java
new file mode 100644
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--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteFunctionDescriptorFactory.java
@@ -0,0 +1,61 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.ServiceLoader;
+import java.util.Set;
+
+public abstract class UrlRewriteFunctionDescriptorFactory {
+
+  private static Map<String,Class<? extends UrlRewriteFunctionDescriptor>> MAP
+      = (Map<String, Class<? extends UrlRewriteFunctionDescriptor>>)loadDescriptors();
+
+  private UrlRewriteFunctionDescriptorFactory() {
+  }
+
+  @SuppressWarnings("unchecked")
+  public static <T extends UrlRewriteFunctionDescriptor<?>> T create( String name ) {
+    try {
+      Class<? extends UrlRewriteFunctionDescriptor> descriptorClass = MAP.get( name );
+      return (T)descriptorClass.newInstance();
+    } catch( InstantiationException e ) {
+      throw new IllegalArgumentException( name );
+    } catch( IllegalAccessException e ) {
+      throw new IllegalArgumentException( name );
+    }
+  }
+
+  private static Map<String,Class<? extends UrlRewriteFunctionDescriptor>> loadDescriptors() {
+    Map<String,Class<? extends UrlRewriteFunctionDescriptor>> map
+        = new HashMap<>();
+    ServiceLoader<? extends UrlRewriteFunctionDescriptor> descriptors
+        = ServiceLoader.load( UrlRewriteFunctionDescriptor.class );
+    for( UrlRewriteFunctionDescriptor descriptor : descriptors ) {
+      String functionName = descriptor.name();
+      Class<? extends UrlRewriteFunctionDescriptor> descriptorClass = descriptor.getClass() ;
+      map.put( functionName, descriptorClass );
+    }
+    return map;
+  }
+
+  public static Set<String> getNames() {
+    return MAP.keySet();
+  }
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteProcessor.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteProcessor.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteProcessor.java
new file mode 100644
index 0000000..381af18
--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteProcessor.java
@@ -0,0 +1,179 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+import org.apache.knox.gateway.filter.rewrite.ext.ScopedMatcher;
+import org.apache.knox.gateway.filter.rewrite.i18n.UrlRewriteMessages;
+import org.apache.knox.gateway.filter.rewrite.impl.UrlRewriteContextImpl;
+import org.apache.knox.gateway.filter.rewrite.impl.UrlRewriteFunctionProcessorFactory;
+import org.apache.knox.gateway.filter.rewrite.impl.UrlRewriteRuleProcessorHolder;
+import org.apache.knox.gateway.filter.rewrite.impl.UrlRewriteStepProcessorHolder;
+import org.apache.knox.gateway.filter.rewrite.spi.UrlRewriteContext;
+import org.apache.knox.gateway.filter.rewrite.spi.UrlRewriteFunctionProcessor;
+import org.apache.knox.gateway.filter.rewrite.spi.UrlRewriteStepStatus;
+import org.apache.knox.gateway.i18n.messages.MessagesFactory;
+import org.apache.knox.gateway.util.urltemplate.Matcher;
+import org.apache.knox.gateway.util.urltemplate.Resolver;
+import org.apache.knox.gateway.util.urltemplate.Template;
+
+import java.util.EnumSet;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class UrlRewriteProcessor implements UrlRewriter {
+
+  private static final UrlRewriteMessages LOG = MessagesFactory.get( UrlRewriteMessages.class );
+
+  UrlRewriteEnvironment environment;
+  UrlRewriteRulesDescriptor descriptor;
+  Map<String,UrlRewriteRuleProcessorHolder> rules = new HashMap<>();
+  ScopedMatcher inbound = new ScopedMatcher();
+  ScopedMatcher outbound = new ScopedMatcher();
+  Map<String,UrlRewriteFunctionProcessor> functions = new HashMap<>();
+
+  public UrlRewriteProcessor() {
+  }
+
+  // Convert the descriptor into processors.
+  public void initialize( UrlRewriteEnvironment environment, UrlRewriteRulesDescriptor descriptor ) {
+    this.environment = environment;
+    this.descriptor = descriptor;
+    initializeFunctions( descriptor );
+    initializeRules( descriptor );
+  }
+
+  public UrlRewriteRulesDescriptor getConfig() {
+    return descriptor;
+  }
+
+  @SuppressWarnings("unchecked")
+  private void initializeFunctions( UrlRewriteRulesDescriptor rules ) {
+    for( String name : UrlRewriteFunctionDescriptorFactory.getNames() ) {
+      try {
+        UrlRewriteFunctionDescriptor descriptor = rules.getFunction( name );
+        UrlRewriteFunctionProcessor processor = UrlRewriteFunctionProcessorFactory.create( name, descriptor );
+        processor.initialize( environment, descriptor );
+        functions.put( name, processor );
+      } catch( Exception e ) {
+        // Ignore it and it won't be available as a function.
+        LOG.failedToInitializeRewriteFunctions( e );
+      }
+    }
+  }
+
+  private void initializeRules( UrlRewriteRulesDescriptor descriptor ) {
+    for( UrlRewriteRuleDescriptor ruleDescriptor : descriptor.getRules() ) {
+      try {
+        UrlRewriteRuleProcessorHolder ruleProcessor = new UrlRewriteRuleProcessorHolder();
+        ruleProcessor.initialize( environment, ruleDescriptor );
+        if( !rules.containsKey( ruleDescriptor.name() ) ) {
+          rules.put( ruleDescriptor.name(), ruleProcessor );
+        }
+        Template template = ruleDescriptor.template();
+        if( template != null ) {
+          EnumSet<Direction> directions = ruleDescriptor.directions();
+          if( directions == null || directions.isEmpty() ) {
+            inbound.add( template, ruleProcessor );
+            outbound.add( template, ruleProcessor );
+          } else if( directions.contains( Direction.IN ) ) {
+            inbound.add( template, ruleProcessor );
+          } else if ( directions.contains( Direction.OUT ) ) {
+            outbound.add( template, ruleProcessor );
+          }
+        }
+      } catch( Exception e ) {
+        LOG.failedToInitializeRewriteRules( e );
+      }
+    }
+  }
+
+  public void destroy() {
+    for( UrlRewriteStepProcessorHolder rule : rules.values() ) {
+      try {
+        rule.destroy();
+      } catch ( Exception e ) {
+        LOG.failedToDestroyRewriteStepProcessor( e );
+      }
+    }
+    for( UrlRewriteFunctionProcessor function : functions.values() ) {
+      try {
+        function.destroy();
+      } catch( Exception e ) {
+        LOG.failedToDestroyRewriteFunctionProcessor( e );
+      }
+    }
+  }
+
+  @Override
+  public Template rewrite( Resolver resolver, Template inputUri, Direction direction, String ruleName ) {
+    Template outputUri = inputUri;
+    String serviceRole = null;
+    if (resolver != null) {
+      List<String> serviceRoles = resolver.resolve("service.role");
+      if ( serviceRoles != null && !serviceRoles.isEmpty() ) {
+        serviceRole = serviceRoles.get(0);
+      }
+    }
+    UrlRewriteStepProcessorHolder stepHolder = null;
+    String effectiveRuleName = null;
+    if( ruleName == null || "*".equals( ruleName ) ) {
+      ruleName = null; // Used for logging later.
+      Matcher<UrlRewriteRuleProcessorHolder>.Match match = null;
+      switch( direction ) {
+        case IN:
+          match = inbound.match( outputUri, serviceRole );
+          break;
+        case OUT:
+          match = outbound.match( outputUri, serviceRole );
+          break;
+      }
+      if( match != null ) {
+        stepHolder = match.getValue();
+        effectiveRuleName = match.getValue().getRuleName();
+      }
+    } else if( !ruleName.isEmpty() ) {
+      stepHolder = rules.get( ruleName );
+      effectiveRuleName = ruleName;
+    }
+    if( stepHolder != null ) {
+      UrlRewriteContext context = new UrlRewriteContextImpl( environment, resolver, functions, direction, inputUri );
+      try {
+        UrlRewriteStepStatus stepStatus = stepHolder.process( context );
+        if( UrlRewriteStepStatus.SUCCESS == stepStatus ) {
+          outputUri = context.getCurrentUrl();
+          if( ruleName == null ) {
+            LOG.rewroteUrlViaImplicitRule( inputUri, direction, effectiveRuleName, outputUri );
+          } else {
+            LOG.rewroteUrlViaExplicitRule( inputUri, direction, effectiveRuleName, outputUri );
+          }
+        } else {
+          LOG.failedToRewriteUrl( inputUri, direction, effectiveRuleName, stepStatus );
+          outputUri = null;
+        }
+      } catch( Exception e ) {
+        LOG.failedToRewriteUrlDueToException( inputUri, direction, effectiveRuleName, e );
+        outputUri = null;
+      }
+    } else {
+      LOG.noRuleMatchingUrl( inputUri, direction );
+    }
+    return outputUri;
+  }
+
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteRuleDescriptor.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteRuleDescriptor.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteRuleDescriptor.java
new file mode 100644
index 0000000..b65670a
--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteRuleDescriptor.java
@@ -0,0 +1,52 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+import org.apache.knox.gateway.util.urltemplate.Template;
+
+import java.net.URISyntaxException;
+import java.util.EnumSet;
+
+/**
+ *  <rule name="..." pattern="..." dir="request" flow="and"><match></match></rule>
+ */
+public interface UrlRewriteRuleDescriptor extends UrlRewriteFlowDescriptor<UrlRewriteRuleDescriptor> {
+
+  String name();
+
+  UrlRewriteStepDescriptor name( String name );
+
+  String scope();
+
+  UrlRewriteStepDescriptor scope( String scope );
+
+  EnumSet<UrlRewriter.Direction> directions();
+
+  UrlRewriteRuleDescriptor directions( String directions );
+
+  UrlRewriteRuleDescriptor directions( UrlRewriter.Direction... directions );
+
+  String pattern();
+
+  UrlRewriteRuleDescriptor pattern( String pattern ) throws URISyntaxException;
+
+  Template template();
+
+  UrlRewriteRuleDescriptor template( Template pattern );
+
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteRulesDescriptor.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteRulesDescriptor.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteRulesDescriptor.java
new file mode 100644
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--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteRulesDescriptor.java
@@ -0,0 +1,57 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+import java.util.List;
+
+/**
+ * <rules><rule></rule></rules>
+ */
+public interface UrlRewriteRulesDescriptor {
+
+  void addRules( UrlRewriteRulesDescriptor rules );
+
+  List<UrlRewriteFunctionDescriptor> getFunctions();
+
+  <T extends UrlRewriteFunctionDescriptor<?>> T getFunction( String name );
+
+  <T extends UrlRewriteFunctionDescriptor<?>> T addFunction( String name );
+
+
+  List<UrlRewriteRuleDescriptor> getRules();
+
+  UrlRewriteRuleDescriptor getRule( String name );
+
+  UrlRewriteRuleDescriptor newRule();
+
+  UrlRewriteRuleDescriptor addRule( String name );
+
+  void addRule( UrlRewriteRuleDescriptor rule );
+
+
+  List<UrlRewriteFilterDescriptor> getFilters();
+
+  UrlRewriteFilterDescriptor getFilter( String name );
+
+  UrlRewriteFilterDescriptor newFilter();
+
+  UrlRewriteFilterDescriptor addFilter( String name );
+
+  void addFilter( UrlRewriteFilterDescriptor filter );
+
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteRulesDescriptorFactory.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteRulesDescriptorFactory.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteRulesDescriptorFactory.java
new file mode 100644
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--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteRulesDescriptorFactory.java
@@ -0,0 +1,76 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+import org.apache.knox.gateway.filter.rewrite.i18n.UrlRewriteResources;
+import org.apache.knox.gateway.filter.rewrite.impl.UrlRewriteRulesDescriptorImpl;
+import org.apache.knox.gateway.filter.rewrite.impl.xml.XmlUrlRewriteRulesExporter;
+import org.apache.knox.gateway.filter.rewrite.impl.xml.XmlUrlRewriteRulesImporter;
+import org.apache.knox.gateway.filter.rewrite.spi.UrlRewriteRulesExporter;
+import org.apache.knox.gateway.filter.rewrite.spi.UrlRewriteRulesImporter;
+import org.apache.knox.gateway.i18n.resources.ResourcesFactory;
+
+import java.io.IOException;
+import java.io.Reader;
+import java.io.Writer;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+public abstract class UrlRewriteRulesDescriptorFactory {
+
+  private static UrlRewriteResources RES = ResourcesFactory.get( UrlRewriteResources.class );
+
+  private static Map<String, UrlRewriteRulesImporter> IMPORTERS = loadImporters();
+  private static Map<String, UrlRewriteRulesExporter> EXPORTERS = loadExporters();
+
+  private UrlRewriteRulesDescriptorFactory() {
+  }
+
+  public static UrlRewriteRulesDescriptor create() {
+    return new UrlRewriteRulesDescriptorImpl();
+  }
+
+  public static UrlRewriteRulesDescriptor load( String format, Reader reader ) throws IOException {
+    UrlRewriteRulesImporter importer = IMPORTERS.get( format );
+    if( importer == null ) {
+      throw new IllegalArgumentException( RES.noImporterForFormat( format ) );
+    }
+    return importer.load( reader );
+  }
+
+  public static void store( UrlRewriteRulesDescriptor descriptor, String format, Writer writer ) throws IOException {
+    UrlRewriteRulesExporter exporter = EXPORTERS.get( format );
+    if( exporter == null ) {
+      throw new IllegalArgumentException( RES.noExporterForFormat( format ) );
+    }
+    exporter.store( descriptor, writer );
+  }
+
+  private static Map<String, UrlRewriteRulesImporter> loadImporters() {
+    Map<String, UrlRewriteRulesImporter> map = new ConcurrentHashMap<String, UrlRewriteRulesImporter>();
+    map.put( "xml", new XmlUrlRewriteRulesImporter() );
+    return map;
+  }
+
+  private static Map<String, UrlRewriteRulesExporter> loadExporters() {
+    Map<String, UrlRewriteRulesExporter> map = new ConcurrentHashMap<String, UrlRewriteRulesExporter>();
+    map.put( "xml", new XmlUrlRewriteRulesExporter() );
+    return map;
+  }
+
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteServletContextListener.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteServletContextListener.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteServletContextListener.java
new file mode 100644
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--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteServletContextListener.java
@@ -0,0 +1,106 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+import javax.servlet.ServletContext;
+import javax.servlet.ServletContextEvent;
+import javax.servlet.ServletContextListener;
+
+import org.apache.knox.gateway.filter.rewrite.i18n.UrlRewriteMessages;
+import org.apache.knox.gateway.i18n.messages.MessagesFactory;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.net.MalformedURLException;
+import java.net.URL;
+
+public class UrlRewriteServletContextListener implements ServletContextListener {
+
+  public static final String PROCESSOR_ATTRIBUTE_NAME = UrlRewriteProcessor.class.getName();
+  public static final String DESCRIPTOR_LOCATION_INIT_PARAM_NAME = "rewriteDescriptorLocation";
+  public static final String DESCRIPTOR_DEFAULT_FILE_NAME = "rewrite.xml";
+  public static final String DESCRIPTOR_DEFAULT_LOCATION = "/WEB-INF/" + DESCRIPTOR_DEFAULT_FILE_NAME;
+  private static final UrlRewriteMessages LOG = MessagesFactory.get( UrlRewriteMessages.class );
+
+  @Override
+  public void contextInitialized( ServletContextEvent event ) {
+    UrlRewriteRulesDescriptor descriptor = null;
+    try {
+      URL url = locateDescriptor( event.getServletContext() );
+      descriptor = loadDescriptor( url );
+    } catch( IOException e ) {
+      throw new IllegalStateException( e );
+    }
+    ServletContext context = event.getServletContext();
+    UrlRewriteEnvironment environment = new UrlRewriteServletEnvironment( context );
+    UrlRewriteProcessor processor = new UrlRewriteProcessor();
+    processor.initialize( environment, descriptor );
+    event.getServletContext().setAttribute( PROCESSOR_ATTRIBUTE_NAME, processor );
+  }
+
+  @Override
+  public void contextDestroyed( ServletContextEvent event ) {
+    UrlRewriteProcessor processor =
+        (UrlRewriteProcessor)event.getServletContext().getAttribute( PROCESSOR_ATTRIBUTE_NAME );
+    event.getServletContext().removeAttribute( PROCESSOR_ATTRIBUTE_NAME );
+    if( processor != null ) {
+      processor.destroy();
+    }
+  }
+
+  public static UrlRewriter getUrlRewriter( ServletContext context ) {
+    return ((UrlRewriteProcessor)context.getAttribute( PROCESSOR_ATTRIBUTE_NAME ));
+  }
+
+  private static URL locateDescriptor( ServletContext context ) throws IOException {
+    String param = context.getInitParameter( DESCRIPTOR_LOCATION_INIT_PARAM_NAME );
+    if( param == null ) {
+      param = DESCRIPTOR_DEFAULT_LOCATION;
+    }
+    URL url;
+    try {
+      url = context.getResource( param );
+    } catch( MalformedURLException e ) {
+      // Ignore it and try using the value directly as a URL.
+      url = null;
+    }
+    if( url == null ) {
+      url = new URL( param );
+    }
+    if( url == null ) {
+      throw new FileNotFoundException( param );
+    }
+    return url;
+  }
+
+  private static UrlRewriteRulesDescriptor loadDescriptor( URL url ) throws IOException {
+    InputStream stream = url.openStream();
+    Reader reader = new InputStreamReader( stream, "UTF-8" );
+    UrlRewriteRulesDescriptor descriptor = UrlRewriteRulesDescriptorFactory.load( "xml", reader );
+    try {
+      reader.close();
+    } catch( IOException closeException ) {
+      LOG.failedToLoadRewriteRulesDescriptor( closeException );
+    }
+    return descriptor;
+  }
+
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteServletEnvironment.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteServletEnvironment.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteServletEnvironment.java
new file mode 100644
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--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteServletEnvironment.java
@@ -0,0 +1,56 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+import javax.servlet.ServletContext;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.Arrays;
+import java.util.List;
+
+public class UrlRewriteServletEnvironment implements UrlRewriteEnvironment {
+
+  private ServletContext context;
+
+  public UrlRewriteServletEnvironment( ServletContext context ) {
+    this.context = context;
+  }
+
+  @Override
+  public URL getResource( String name ) throws MalformedURLException {
+    URL url = context.getResource( name );
+    return url;
+  }
+
+  @Override
+  public <T> T getAttribute( String name ) {
+    T attribute = (T)context.getAttribute( name );
+    return attribute;
+  }
+
+  @Override
+  public List<String> resolve( String name ) {
+    List<String> values = null;
+    String value = context.getInitParameter( name );
+    if( value != null ) {
+      values = Arrays.asList( value );
+    }
+    return values;
+  }
+
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteServletFilter.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteServletFilter.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteServletFilter.java
new file mode 100644
index 0000000..dc49dbc
--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteServletFilter.java
@@ -0,0 +1,63 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+import org.apache.knox.gateway.filter.AbstractGatewayFilter;
+import org.apache.knox.gateway.filter.rewrite.impl.UrlRewriteRequest;
+import org.apache.knox.gateway.filter.rewrite.impl.UrlRewriteResponse;
+import org.apache.knox.gateway.util.MimeTypes;
+
+import javax.activation.MimeType;
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+/**
+ *
+ */
+public class UrlRewriteServletFilter extends AbstractGatewayFilter {
+
+  public static final String REQUEST_URL_RULE_PARAM = "request.url";
+  public static final String REQUEST_HEADERS_FILTER_PARAM = "request.headers";
+  public static final String REQUEST_COOKIES_FILTER_PARAM = "request.cookies";
+  public static final String REQUEST_BODY_FILTER_PARAM = "request.body";
+  public static final String RESPONSE_HEADERS_FILTER_PARAM = "response.headers";
+  public static final String RESPONSE_COOKIES_FILTER_PARAM = "response.cookies";
+  public static final String RESPONSE_BODY_FILTER_PARAM = "response.body";
+
+  public static final MimeType HEADERS_MIME_TYPE = MimeTypes.create( "application/x-http-headers", null );
+  public static final MimeType COOKIES_MIME_TYPE = MimeTypes.create( "application/x-http-cookies", null );
+
+  @Override
+  public void init( FilterConfig filterConfig ) throws ServletException {
+    super.init( filterConfig );
+  }
+
+  @Override
+  protected void doFilter( HttpServletRequest request, HttpServletResponse response, FilterChain chain )
+      throws IOException, ServletException {
+    FilterConfig config = getConfig();
+    UrlRewriteRequest rewriteRequest = new UrlRewriteRequest( config, request );
+    UrlRewriteResponse rewriteResponse = new UrlRewriteResponse( config, rewriteRequest, response );
+    chain.doFilter( rewriteRequest, rewriteResponse );
+  }
+
+}

http://git-wip-us.apache.org/repos/asf/knox/blob/af9b0c3d/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteStepDescriptor.java
----------------------------------------------------------------------
diff --git a/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteStepDescriptor.java b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteStepDescriptor.java
new file mode 100644
index 0000000..906a3c5
--- /dev/null
+++ b/gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/api/UrlRewriteStepDescriptor.java
@@ -0,0 +1,26 @@
+/**
+ * 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.knox.gateway.filter.rewrite.api;
+
+public interface UrlRewriteStepDescriptor<T> {
+
+  String type();
+
+  T type( String type );
+
+}


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