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Subject [GitHub] [maven-wagon] ok2c commented on a change in pull request #62: [WAGON-570] Use RedirectStrategy from HttpClient rather than our cust…
Date Sat, 22 Feb 2020 12:11:21 GMT
ok2c commented on a change in pull request #62: [WAGON-570] Use RedirectStrategy from HttpClient
rather than our cust…
URL: https://github.com/apache/maven-wagon/pull/62#discussion_r382908356
 
 

 ##########
 File path: wagon-providers/wagon-http-shared/src/main/java/org/apache/maven/wagon/shared/http/WagonRedirectStrategy.java
 ##########
 @@ -0,0 +1,99 @@
+package org.apache.maven.wagon.shared.http;
+
+/*
+ * 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.
+ */
+
+import java.net.URI;
+
+import org.apache.http.HttpRequest;
+import org.apache.http.HttpResponse;
+import org.apache.http.HttpStatus;
+import org.apache.http.ProtocolException;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.client.methods.HttpHead;
+import org.apache.http.client.methods.HttpPut;
+import org.apache.http.client.methods.HttpUriRequest;
+import org.apache.http.client.methods.RequestBuilder;
+import org.apache.http.impl.client.DefaultRedirectStrategy;
+import org.apache.http.protocol.HttpContext;
+import org.apache.http.util.Args;
+
+/**
+ * A custom redirect strategy for Apache Maven Wagon HttpClient.
+ *
+ * @since 3.4.0
+ *
+ */
+public class WagonRedirectStrategy extends DefaultRedirectStrategy
+{
+
+    private static final int SC_PERMANENT_REDIRECT = 308;
+
+    public WagonRedirectStrategy()
+    {
+        super( new String[] {
+                HttpGet.METHOD_NAME,
+                HttpHead.METHOD_NAME,
+                HttpPut.METHOD_NAME,
+                "MKCOL" } );
+    }
+
+    @Override
+    public boolean isRedirected( final HttpRequest request, final HttpResponse response,
+            final HttpContext context ) throws ProtocolException
+    {
+        Args.notNull( request, "HTTP request" );
+        Args.notNull( response, "HTTP response" );
+
+        final int statusCode = response.getStatusLine().getStatusCode();
+        final String method = request.getRequestLine().getMethod();
+        switch ( statusCode )
+        {
+        case HttpStatus.SC_MOVED_TEMPORARILY:
+        case HttpStatus.SC_MOVED_PERMANENTLY:
+        case HttpStatus.SC_SEE_OTHER:
+        case HttpStatus.SC_TEMPORARY_REDIRECT:
+        case SC_PERMANENT_REDIRECT:
+            return isRedirectable( method );
+        default:
+            return false;
+        }
+    }
+
+    @Override
+    public HttpUriRequest getRedirect( final HttpRequest request, final HttpResponse response,
+            final HttpContext context ) throws ProtocolException
+    {
+        final URI uri = getLocationURI( request, response, context );
+        final String method = request.getRequestLine().getMethod();
+        if ( method.equalsIgnoreCase( HttpHead.METHOD_NAME ) )
+        {
+            return new HttpHead( uri );
+        }
+        else if ( method.equalsIgnoreCase( HttpGet.METHOD_NAME ) )
+        {
+            return new HttpGet( uri );
+        }
+        else
+        {
+            return RequestBuilder.copy( request ).setUri( uri ).build();
 
 Review comment:
   @michael-o I suppose there is no need to treat `HEAD` and `GET` as special cases. `RequestBuilder.copy(
request ).setUri( uri ).build();` should be OK for all methods. 
   Looks good to me.

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