This fixes issue #48

pom.xml

@@ -28,15 +28,16 @@
         <httpcomponents.version>4.4.14</httpcomponents.version>
         <jackson.version>2.18.0</jackson.version>
         <jupiter.version>5.11.2</jupiter.version>
+        <log4j2.version>2.24.1</log4j2.version>
         <tika.version>2.9.2</tika.version>
-        <maven.shade.version>3.4.1</maven.shade.version>
+        <maven.shade.version>3.6.0</maven.shade.version>
     </properties>
     <dependencyManagement>
         <dependencies>
             <dependency>
                 <groupId>commons-logging</groupId>
                 <artifactId>commons-logging</artifactId>
-                <version>1.2</version>
+                <version>1.3.4</version>
             </dependency>
             <dependency>
                 <groupId>org.apache.httpcomponents</groupId>
@@ -76,7 +77,7 @@
             <dependency>
                 <groupId>org.apache.commons</groupId>
                 <artifactId>commons-compress</artifactId>
-                <version>1.23.0</version>
+                <version>1.27.1</version>
             </dependency>
             <dependency>
                 <groupId>commons-io</groupId>
@@ -142,12 +143,12 @@
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-core</artifactId>
-            <version>2.20.0</version>
+            <version>${log4j2.version}</version>
         </dependency>
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-slf4j2-impl</artifactId>
-            <version>2.20.0</version>
+            <version>${log4j2.version}</version>
         </dependency>
         <dependency>
             <groupId>org.apache.commons</groupId>
@@ -201,7 +202,7 @@
                 <!-- mvn validate -->
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-checkstyle-plugin</artifactId>
-                <version>3.2.2</version>
+                <version>3.5.0</version>
                 <dependencies>
                     <dependency>
                         <groupId>com.puppycrawl.tools</groupId>
@@ -232,7 +233,7 @@
             <plugin>
                 <groupId>de.thetaphi</groupId>
                 <artifactId>forbiddenapis</artifactId>
-                <version>3.5.1</version>
+                <version>3.8</version>
                 <configuration>
                     <targetVersion>${maven.compiler.target}</targetVersion>
                     <ignoreSignaturesOfMissingClasses>true</ignoreSignaturesOfMissingClasses>
@@ -263,23 +264,23 @@
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>versions-maven-plugin</artifactId>
-                <version>2.16.0</version>
+                <version>2.17.1</version>
                 <configuration>
                     <generateBackupPoms>false</generateBackupPoms>
                 </configuration>
             </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-enforcer-plugin</artifactId>
-                <version>3.3.0</version> <!-- can't update to 3.1.0, see MENFORCER-393 -->
+                <version>3.5.0</version>
                 <executions>
                     <execution>
                         <id>enforce-maven</id>
                         <configuration>
                             <rules>
                                 <dependencyConvergence />
                                 <requireMavenVersion>
-                                    <version>3.5</version>
+                                    <version>3.7</version>
                                 </requireMavenVersion>
                             </rules>
                         </configuration>

src/main/java/org/tallison/cc/index/extractor/CCMimeCounter.java

@@ -207,7 +207,7 @@ private static class IndexWorker implements Callable<Long> {
                     AbstractRecordProcessor recordProcessor) throws TikaException {
             this.indexUrls = indexUrls;
             this.recordProcessor = recordProcessor;
-            this.fetcher = fetcherConfig.newFetcher();
+            this.fetcher = fetcherConfig.newIndexFetcher();
         }
 
         @Override

src/main/java/org/tallison/cc/index/selector/ExtensionsSelector.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.tallison.cc.index.selector;
+
+import java.util.HashSet;
+import java.util.Locale;
+import java.util.Set;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import org.apache.commons.io.FilenameUtils;
+
+import org.apache.tika.utils.StringUtils;
+
+/**
+ * Comma delimited list of extensions to accept. Extensions are currently matched case insensitively.
+ */
+public class ExtensionsSelector extends AbstractSamplingSelector {
+    final Set<String> extensions = new HashSet<>();
+
+    @JsonCreator
+    public ExtensionsSelector(@JsonProperty("extensions") String commaDelimitedExtensions,
+                              @JsonProperty("sample") Double sample) {
+        super(sample == null ? new SampleAll() : new SampleSome(sample));
+        for (String ext : commaDelimitedExtensions.split(",")) {
+            if (!StringUtils.isBlank(ext)) {
+                extensions.add(ext.toLowerCase(Locale.ROOT));
+            }
+        }
+    }
+
+    @Override
+    public boolean select(String val) {
+        String ext = FilenameUtils.getExtension(val);
+        if (! StringUtils.isBlank(ext)) {
+            ext = ext.toLowerCase(Locale.ROOT);
+            if (extensions.contains(ext)) {
+                return sampler.select(val);
+            }
+        }
+        return false;
+    }
+}

src/main/java/org/tallison/cc/index/selector/SelectorClause.java

@@ -20,7 +20,9 @@
 import com.fasterxml.jackson.annotation.JsonTypeInfo;
 
 @JsonTypeInfo(use = JsonTypeInfo.Id.DEDUCTION)
-@JsonSubTypes({@JsonSubTypes.Type(MatchSelector.class), @JsonSubTypes.Type(RegexSelector.class)})
+@JsonSubTypes(
+        {@JsonSubTypes.Type(MatchSelector.class), @JsonSubTypes.Type(RegexSelector.class),
+        @JsonSubTypes.Type(ExtensionsSelector.class)})
 public interface SelectorClause {
 
     boolean select(String val);

src/test/java/org/tallison/cc/index/selector/IndexRecordSelectorTest.java

@@ -30,15 +30,12 @@
 import org.junit.jupiter.api.Test;
 import org.tallison.cc.index.CCIndexRecord;
 
-import org.apache.tika.utils.StringUtils;
-
-
 public class IndexRecordSelectorTest {
 
     @Test
     public void testBasic() throws Exception {
         ObjectMapper mapper = new ObjectMapper();
-
+        //this just tests that the deserialization works
         RecordSelector recordSelector =
                 mapper.readValue(getClass().getResourceAsStream("/selectors/basic.json"),
                         RecordSelector.class);
@@ -47,7 +44,12 @@ public void testBasic() throws Exception {
     @Test
     @Disabled("for development only")
     public void testIndexFile() throws Exception {
-        Path p = Paths.get("/Users/allison/data/cc/index-work/cdx-00000.gz");
+        Path p = Paths.get("/...CC-MAIN-2023-06/indexes/cdx-00000.gz");
+        ObjectMapper mapper = new ObjectMapper();
+        //this just tests that the deserialization works
+        RecordSelector recordSelector =
+                mapper.readValue(getClass().getResourceAsStream("/selectors/extensions.json"),
+                        RecordSelector.class);
         try (BufferedReader r = new BufferedReader(
                 new InputStreamReader(new GZIPInputStream(Files.newInputStream(p)),
                         StandardCharsets.UTF_8))) {
@@ -56,11 +58,10 @@ public void testIndexFile() throws Exception {
                 Optional<CCIndexRecord> record = CCIndexRecord.parseRecord(line);
                 if (record.isPresent()) {
                     CCIndexRecord indexRecord = record.get();
-                    if (!indexRecord.getMime().equals(indexRecord.getMimeDetected())) {
-                        System.out.println(line);
-                    }
-                    if (!StringUtils.isBlank(indexRecord.getTruncated())) {
-
+                    if (recordSelector.select(indexRecord)) {
+                        System.out.println("Selected: " + indexRecord);
+                    } else {
+                        //System.out.println("Rejected: " + indexRecord.getUrl());
                     }
                 }
                 line = r.readLine();

src/test/resources/selectors/basic.json

@@ -5,7 +5,12 @@
         "match": "application/pdf",
         "sample": 0.8
       }
-    ]
+    ],
+    "url": [
+        {
+        "extensions": "exe,bat"
+        }
+      ]
   },
   "must": {
     "status": [

src/test/resources/selectors/extensions.json

@@ -0,0 +1,16 @@
+{
+  "should": {
+    "url": [
+        {
+        "extensions": "exe,bat"
+        }
+      ]
+  },
+  "must": {
+    "status": [
+      {
+        "match": "200"
+      }
+    ]
+  }
+}