NTA-89: Add a keyword filter

https://issues.jboss.org/browse/NTA-89

Author: Yuan-Hu

Diff for: core/src/main/java/io/narayana/nta/Configuration.java

@@ -23,6 +23,7 @@
 package io.narayana.nta;
 
 import io.narayana.nta.logparsing.as8.filters.PackageFilter;
+import io.narayana.nta.logparsing.as8.filters.KeywordFilter;
 import io.narayana.nta.logparsing.as8.handlers.*;
 
 import java.io.File;
@@ -80,6 +81,7 @@ public final class Configuration {
 
     public static final Class[] LOG_FILTERS = new Class[]{
             PackageFilter.class,
+            KeywordFilter.class,
     };
 
     /**

Diff for: core/src/main/java/io/narayana/nta/logparsing/as8/filters/GetFilterKeywords.java

@@ -0,0 +1,57 @@
+package io.narayana.nta.logparsing.as8.filters;
+
+import org.apache.log4j.Logger;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Properties;
+
+public class GetFilterKeywords {
+    private List<String> filterKeywords;
+    private static final Logger logger = Logger.getLogger(GetFilterKeywords.class.getName());
+
+    private static class GetFilterKeywordsHolder {
+        private static final GetFilterKeywords INSTANCE = new GetFilterKeywords();
+    }
+
+    public static final GetFilterKeywords getInstance() {
+        return GetFilterKeywordsHolder.INSTANCE;
+    }
+
+    private GetFilterKeywords() {
+        InputStream inputStream = null;
+        try {
+            Properties prop = new Properties();
+            filterKeywords = new ArrayList<>();
+
+            String propFileName = "filter.properties";
+            logger.warn(getClass().getClassLoader().getResource());
+            inputStream = getClass().getClassLoader().getResourceAsStream(propFileName);
+            if (inputStream != null) {
+                prop.load(inputStream);
+            } else {
+                throw new FileNotFoundException("property file '" + propFileName + "' not found in the classpath");
+            }
+
+            for (String name : prop.stringPropertyNames()) {
+                if (name.contains("keywords"))
+                    filterKeywords.add(prop.getProperty(name));
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        } finally {
+            try {
+                inputStream.close();
+            } catch (IOException ignored) {
+            }
+        }
+    }
+
+    public List<String> getFilterKeywords() {
+        return filterKeywords;
+    }
+}
+

Diff for: core/src/main/java/io/narayana/nta/logparsing/as8/filters/KeywordFilter.java

@@ -0,0 +1,51 @@
+/*
+ * JBoss, Home of Professional Open Source.
+ * Copyright 2016, Red Hat, Inc., and individual contributors
+ * as indicated by the @author tags. See the copyright.txt file in the
+ * distribution for a full listing of individual contributors.
+ *
+ * This is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this software; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+ */
+
+package io.narayana.nta.logparsing.as8.filters;
+
+import io.narayana.nta.logparsing.common.Filter;
+
+import java.util.List;
+
+/**
+ * @author huyuan
+ */
+public class KeywordFilter implements Filter {
+
+
+    @Override
+    public boolean matches(String line) throws IndexOutOfBoundsException {
+
+        List<String> keywordList = GetFilterKeywords.getInstance().getFilterKeywords();
+
+        try {
+            for (String s : keywordList) {
+                if (line.contains(s)) { // if black list use !line.contains(s)
+                    return true;
+                }
+            }
+            return false;
+        } catch (IndexOutOfBoundsException e) {
+            return false;
+        }
+    }
+}

Diff for: core/src/main/resources/filter.properties

@@ -0,0 +1,4 @@
+keywords.1=TransactionImple
+keywords.2=Periodic Recovery
+keywords.3=TransactionSynchronizationRegistryImple
+

Diff for: core/src/test/java/io/narayana/nta/test/HandlerServiceTest.java

@@ -79,6 +79,7 @@ public static WebArchive createDeployment() {
                 .addAsWebInfResource(new FileAsset(new File("src/test/resources/persistence.xml")),
                         "classes/META-INF/persistence.xml")
                 .addAsManifestResource(new FileAsset(new File("src/test/resources/nta-test-ds.xml")), "nta-test-ds.xml")
+                .addAsManifestResource(new FileAsset(new File("src/test/resources/filter.properties")), "filter.properties")
                 .addAsLibraries(libs)
                 .setManifest(new StringAsset(ManifestMF));
     }

Diff for: core/src/test/resources/filter.properties

@@ -0,0 +1,4 @@
+keywords.1=TransactionImple
+keywords.2=Periodic Recovery
+keywords.3=TransactionSynchronizationRegistryImple
+