cziegeler closed pull request #3: SLING-7502 Resource Digest Calculation returns different values for the same data URL: https://github.com/apache/sling-org-apache-sling-installer-core/pull/3
This is a PR merged from a forked repository. As GitHub hides the original diff on merge, it is displayed below for the sake of provenance: As this is a foreign pull request (from a fork), the diff is supplied below (as it won't show otherwise due to GitHub magic): diff --git a/src/main/java/org/apache/sling/installer/core/impl/FileDataStore.java b/src/main/java/org/apache/sling/installer/core/impl/FileDataStore.java index f7e2990..3b5242a 100644 --- a/src/main/java/org/apache/sling/installer/core/impl/FileDataStore.java +++ b/src/main/java/org/apache/sling/installer/core/impl/FileDataStore.java @@ -29,6 +29,7 @@ import java.io.OutputStream; import java.math.BigInteger; import java.security.MessageDigest; +import java.util.Collection; import java.util.Dictionary; import java.util.Enumeration; import java.util.HashMap; @@ -46,7 +47,7 @@ public class FileDataStore { private static final Logger log = LoggerFactory.getLogger(FileDataStore.class); - + /** * The name of the bundle context property defining the location for the * installer files (value is "sling.installer.dir"). @@ -159,7 +160,7 @@ public File createNewDataFile(final InputStream stream, final CacheEntry storedDigest = this.digestCache.get(url); if ( storedDigest != null && storedDigest.digest.equals(digest) ) { log.debug( - "File {} with digest {} found, returning {}", + "File {} with digest {} found, returning {}", url, digest, safePath(storedDigest.file)); return storedDigest.file; } @@ -280,12 +281,7 @@ public static String computeDigest(Dictionary<String, Object> data) { } for(final String key : sortedKeys) { oos.writeObject(key); - final Object val = data.get(key); - if ( val instanceof Number ) { - oos.writeObject(String.valueOf(val)); - } else { - oos.writeObject(val); - } + writeValue(data.get(key), oos); } oos.flush(); @@ -299,7 +295,21 @@ public static String computeDigest(Dictionary<String, Object> data) { return result; } } - + + private static void writeValue(final Object val, final ObjectOutputStream oos) throws IOException { + if ( val instanceof Number ) { + writeValue(String.valueOf(val), oos); + } else if ( val instanceof Collection ) { + for (Object o : (Collection<?>) val) { + writeValue(o, oos); + } + } else if ( val instanceof String ) { + oos.writeUTF((String) val); + } else { + oos.writeObject(val); + } + } + private static final String safePath(File f) { return f == null ? null : f.getAbsolutePath(); } diff --git a/src/test/java/org/apache/sling/installer/core/impl/FileDataStoreTest.java b/src/test/java/org/apache/sling/installer/core/impl/FileDataStoreTest.java new file mode 100644 index 0000000..3c00352 --- /dev/null +++ b/src/test/java/org/apache/sling/installer/core/impl/FileDataStoreTest.java @@ -0,0 +1,92 @@ +/* + * 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.sling.installer.core.impl; + +import java.util.ArrayList; +import java.util.Dictionary; +import java.util.Hashtable; +import java.util.LinkedList; +import java.util.List; + +import org.junit.Test; + +import static org.junit.Assert.assertEquals; +import static org.junit.Assert.assertNotEquals; + +public class FileDataStoreTest { + @Test + public void testDigestFromDictionary() { + Dictionary<String,Object> dict1 = new Hashtable<>(); + List<String> l1 = new ArrayList<>(); + l1.add("x"); + l1.add("y"); + dict1.put("la", l1); + dict1.put("foo", new int[] {3, 2, 7}); + String dig1 = FileDataStore.computeDigest(dict1); + + Dictionary<String,Object> dict2 = new Hashtable<>(); + List<String> l2 = new LinkedList<>(); + l2.add("x"); + l2.add("y"); + dict2.put("la", l2); + dict2.put("foo", new int[] {3, 2, 7}); + String dig2 = FileDataStore.computeDigest(dict2); + assertEquals(dig1, dig2); + } + + @Test + public void testDigestFromDictionaryNegative1() { + Dictionary<String,Object> dict1 = new Hashtable<>(); + List<String> l1 = new ArrayList<>(); + l1.add("y"); + l1.add("x"); + dict1.put("la", l1); + dict1.put("foo", new int[] {3, 2, 7}); + String dig1 = FileDataStore.computeDigest(dict1); + + Dictionary<String,Object> dict2 = new Hashtable<>(); + List<String> l2 = new LinkedList<>(); + l2.add("x"); + l2.add("y"); + dict2.put("la", l2); + dict2.put("foo", new int[] {3, 2, 7}); + String dig2 = FileDataStore.computeDigest(dict2); + assertNotEquals(dig1, dig2); + } + + @Test + public void testDigestFromDictionaryNegative2() { + Dictionary<String,Object> dict1 = new Hashtable<>(); + List<String> l1 = new ArrayList<>(); + l1.add("x"); + l1.add("y"); + dict1.put("la", l1); + dict1.put("foo", new int[] {7, 2, 3}); + String dig1 = FileDataStore.computeDigest(dict1); + + Dictionary<String,Object> dict2 = new Hashtable<>(); + List<String> l2 = new LinkedList<>(); + l2.add("x"); + l2.add("y"); + dict2.put("la", l2); + dict2.put("foo", new int[] {3, 2, 7}); + String dig2 = FileDataStore.computeDigest(dict2); + assertNotEquals(dig1, dig2); + } +} ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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