Merge branch 'NIFI-433' into develop

nifi/nifi-commons/nifi-properties/src/main/java/org/apache/nifi/util/NiFiProperties.java

@@ -16,9 +16,6 @@
  */
 package org.apache.nifi.util;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 import java.io.BufferedInputStream;
 import java.io.File;
 import java.io.FileInputStream;
@@ -27,10 +24,15 @@ import java.net.InetSocketAddress;
 import java.nio.file.InvalidPathException;
 import java.nio.file.Path;
 import java.nio.file.Paths;
+import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.Properties;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 public class NiFiProperties extends Properties {
 
     private static final long serialVersionUID = 2119177359005492702L;
@@ -50,6 +52,7 @@ public class NiFiProperties extends Properties {
     public static final String AUTO_RESUME_STATE = "nifi.flowcontroller.autoResumeState";
     public static final String FLOW_CONTROLLER_GRACEFUL_SHUTDOWN_PERIOD = "nifi.flowcontroller.graceful.shutdown.period";
     public static final String NAR_LIBRARY_DIRECTORY = "nifi.nar.library.directory";
+    public static final String NAR_LIBRARY_DIRECTORY_PREFIX = "nifi.nar.library.directory.";
     public static final String NAR_WORKING_DIRECTORY = "nifi.nar.working.directory";
     public static final String COMPONENT_DOCS_DIRECTORY = "nifi.documentation.working.directory";
     public static final String SENSITIVE_PROPS_KEY = "nifi.sensitive.props.key";
@@ -525,9 +528,29 @@ public class NiFiProperties extends Properties {
         return new File(getNarWorkingDirectory(), "extensions");
     }
 
-    public File getNarLibraryDirectory() {
+	public List<Path> getNarLibraryDirectories() {
-        return new File(getProperty(NAR_LIBRARY_DIRECTORY, DEFAULT_NAR_LIBRARY_DIR));
+
-    }
+		List<Path> narLibraryPaths = new ArrayList<>();
+
+		// go through each property
+		for (String propertyName : stringPropertyNames()) {
+			// determine if the property is a nar library path
+			if (StringUtils.startsWith(propertyName, NAR_LIBRARY_DIRECTORY_PREFIX) || NAR_LIBRARY_DIRECTORY.equals(propertyName)) {
+				// attempt to resolve the path specified
+				String narLib = getProperty(propertyName);
+				if (!StringUtils.isBlank(narLib)){
+					narLibraryPaths.add(Paths.get(narLib));
+				}
+			}
+		}
+		
+		if (narLibraryPaths.isEmpty()){
+			narLibraryPaths.add(Paths.get(DEFAULT_NAR_LIBRARY_DIR));
+		}
+		
+		
+		return narLibraryPaths;
+	}
 
     // getters for ui properties //
     /**

nifi/nifi-commons/nifi-properties/src/test/java/org/apache/nifi/util/NiFiPropertiesTest.java

@@ -0,0 +1,90 @@
+package org.apache.nifi.util;
+
+import static org.junit.Assert.assertEquals;
+
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.InputStream;
+import java.nio.file.Path;
+import java.util.List;
+
+import org.junit.Test;
+
+public class NiFiPropertiesTest {
+
+	@Test
+	public void testProperties() {
+
+		NiFiProperties properties = loadSpecifiedProperties("/NiFiProperties/conf/nifi.properties");
+
+		assertEquals("UI Banner Text", properties.getBannerText());
+
+		List<Path> directories = properties.getNarLibraryDirectories();
+
+		assertEquals(new File("./target/resources/NiFiProperties/lib/").getPath(), directories.get(0).toString());
+		assertEquals(new File("./target/resources/NiFiProperties/lib2/").getPath(), directories.get(1).toString());
+
+	}
+
+	@Test
+	public void testMissingProperties() {
+
+		NiFiProperties properties = loadSpecifiedProperties("/NiFiProperties/conf/nifi.missing.properties");
+
+		List<Path> directories = properties.getNarLibraryDirectories();
+
+		assertEquals(1, directories.size());
+
+		assertEquals(new File(NiFiProperties.DEFAULT_NAR_LIBRARY_DIR).getPath(), directories.get(0).toString());
+
+	}
+
+	@Test
+	public void testBlankProperties() {
+
+		NiFiProperties properties = loadSpecifiedProperties("/NiFiProperties/conf/nifi.blank.properties");
+
+		List<Path> directories = properties.getNarLibraryDirectories();
+
+		assertEquals(1, directories.size());
+
+		assertEquals(new File(NiFiProperties.DEFAULT_NAR_LIBRARY_DIR).getPath(), directories.get(0).toString());
+
+	}
+
+	private NiFiProperties loadSpecifiedProperties(String propertiesFile) {
+
+		String file = NiFiPropertiesTest.class.getResource(propertiesFile).getFile();
+
+		System.setProperty(NiFiProperties.PROPERTIES_FILE_PATH, file);
+
+		NiFiProperties properties = NiFiProperties.getInstance();
+
+		// clear out existing properties
+		for (String prop : properties.stringPropertyNames()) {
+			properties.remove(prop);
+		}
+
+		InputStream inStream = null;
+		try {
+			inStream = new BufferedInputStream(new FileInputStream(file));
+			properties.load(inStream);
+		} catch (final Exception ex) {
+			throw new RuntimeException("Cannot load properties file due to " + ex.getLocalizedMessage(), ex);
+		} finally {
+			if (null != inStream) {
+				try {
+					inStream.close();
+				} catch (final Exception ex) {
+					/**
+					 * do nothing *
+					 */
+				}
+			}
+		}
+
+		return properties;
+	}
+
+}

nifi/nifi-commons/nifi-properties/src/test/resources/NiFiProperties/conf/nifi.blank.properties

@@ -0,0 +1,128 @@
+# 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.
+
+# Core Properties #
+nifi.version=nifi-test 3.0.0
+nifi.flow.configuration.file=./target/flow.xml.gz
+nifi.flow.configuration.archive.dir=./target/archive/
+nifi.flowcontroller.autoResumeState=true
+nifi.flowcontroller.graceful.shutdown.period=10 sec
+nifi.flowservice.writedelay.interval=2 sec
+nifi.administrative.yield.duration=30 sec
+
+nifi.reporting.task.configuration.file=./target/reporting-tasks.xml
+nifi.controller.service.configuration.file=./target/controller-services.xml
+nifi.templates.directory=./target/templates
+nifi.ui.banner.text=UI Banner Text
+nifi.ui.autorefresh.interval=30 sec
+nifi.nar.library.directory=
+nifi.custom.nar.library.directory.alt=
+nifi.nar.working.directory=./target/work/nar/
+
+# H2 Settings
+nifi.database.directory=./target/database_repository
+nifi.h2.url.append=;LOCK_TIMEOUT=25000;WRITE_DELAY=0;AUTO_SERVER=FALSE
+
+# FlowFile Repository
+nifi.flowfile.repository.directory=./target/test-repo
+nifi.flowfile.repository.partitions=1
+nifi.flowfile.repository.checkpoint.interval=2 mins
+nifi.queue.swap.threshold=20000
+nifi.swap.storage.directory=./target/test-repo/swap
+nifi.swap.in.period=5 sec
+nifi.swap.in.threads=1
+nifi.swap.out.period=5 sec
+nifi.swap.out.threads=4
+
+# Content Repository
+nifi.content.claim.max.appendable.size=10 MB
+nifi.content.claim.max.flow.files=100
+nifi.content.repository.directory.default=./target/content_repository
+
+# Provenance Repository Properties
+nifi.provenance.repository.storage.directory=./target/provenance_repository
+nifi.provenance.repository.max.storage.time=24 hours
+nifi.provenance.repository.max.storage.size=1 GB
+nifi.provenance.repository.rollover.time=5 mins
+nifi.provenance.repository.rollover.size=100 MB
+
+# Site to Site properties
+nifi.remote.input.socket.port=9990
+nifi.remote.input.secure=true
+
+# web properties #
+nifi.web.war.directory=./target/lib
+nifi.web.http.host=
+nifi.web.http.port=8080
+nifi.web.https.host=
+nifi.web.https.port=
+nifi.web.jetty.working.directory=./target/work/jetty
+
+# security properties #
+nifi.sensitive.props.key=key
+nifi.sensitive.props.algorithm=PBEWITHMD5AND256BITAES-CBC-OPENSSL
+nifi.sensitive.props.provider=BC
+
+nifi.security.keystore=
+nifi.security.keystoreType=
+nifi.security.keystorePasswd=
+nifi.security.keyPasswd=
+nifi.security.truststore=
+nifi.security.truststoreType=
+nifi.security.truststorePasswd=
+nifi.security.needClientAuth=
+nifi.security.authorizedUsers.file=./target/conf/authorized-users.xml
+nifi.security.user.credential.cache.duration=24 hours
+nifi.security.user.authority.provider=nifi.authorization.FileAuthorizationProvider
+nifi.security.support.new.account.requests=
+nifi.security.default.user.roles=
+
+# cluster common properties (cluster manager and nodes must have same values) #
+nifi.cluster.protocol.heartbeat.interval=5 sec
+nifi.cluster.protocol.is.secure=false
+nifi.cluster.protocol.socket.timeout=30 sec
+nifi.cluster.protocol.connection.handshake.timeout=45 sec
+# if multicast is used, then nifi.cluster.protocol.multicast.xxx properties must be configured #
+nifi.cluster.protocol.use.multicast=false
+nifi.cluster.protocol.multicast.address=
+nifi.cluster.protocol.multicast.port=
+nifi.cluster.protocol.multicast.service.broadcast.delay=500 ms
+nifi.cluster.protocol.multicast.service.locator.attempts=3
+nifi.cluster.protocol.multicast.service.locator.attempts.delay=1 sec
+
+# cluster node properties (only configure for cluster nodes) #
+nifi.cluster.is.node=false
+nifi.cluster.node.address=
+nifi.cluster.node.protocol.port=
+nifi.cluster.node.protocol.threads=2
+# if multicast is not used, nifi.cluster.node.unicast.xxx must have same values as nifi.cluster.manager.xxx #
+nifi.cluster.node.unicast.manager.address=
+nifi.cluster.node.unicast.manager.protocol.port=
+nifi.cluster.node.unicast.manager.authority.provider.port=
+
+# cluster manager properties (only configure for cluster manager) #
+nifi.cluster.is.manager=false
+nifi.cluster.manager.address=
+nifi.cluster.manager.protocol.port=
+nifi.cluster.manager.authority.provider.port=
+nifi.cluster.manager.authority.provider.threads=10
+nifi.cluster.manager.node.firewall.file=
+nifi.cluster.manager.node.event.history.size=10
+nifi.cluster.manager.node.api.connection.timeout=30 sec
+nifi.cluster.manager.node.api.read.timeout=30 sec
+nifi.cluster.manager.node.api.request.threads=10
+nifi.cluster.manager.flow.retrieval.delay=5 sec
+nifi.cluster.manager.protocol.threads=10
+nifi.cluster.manager.safemode.duration=0 sec

nifi/nifi-commons/nifi-properties/src/test/resources/NiFiProperties/conf/nifi.missing.properties

@@ -0,0 +1,126 @@
+# 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.
+
+# Core Properties #
+nifi.version=nifi-test 3.0.0
+nifi.flow.configuration.file=./target/flow.xml.gz
+nifi.flow.configuration.archive.dir=./target/archive/
+nifi.flowcontroller.autoResumeState=true
+nifi.flowcontroller.graceful.shutdown.period=10 sec
+nifi.flowservice.writedelay.interval=2 sec
+nifi.administrative.yield.duration=30 sec
+
+nifi.reporting.task.configuration.file=./target/reporting-tasks.xml
+nifi.controller.service.configuration.file=./target/controller-services.xml
+nifi.templates.directory=./target/templates
+nifi.ui.banner.text=UI Banner Text
+nifi.ui.autorefresh.interval=30 sec
+nifi.nar.working.directory=./target/work/nar/
+
+# H2 Settings
+nifi.database.directory=./target/database_repository
+nifi.h2.url.append=;LOCK_TIMEOUT=25000;WRITE_DELAY=0;AUTO_SERVER=FALSE
+
+# FlowFile Repository
+nifi.flowfile.repository.directory=./target/test-repo
+nifi.flowfile.repository.partitions=1
+nifi.flowfile.repository.checkpoint.interval=2 mins
+nifi.queue.swap.threshold=20000
+nifi.swap.storage.directory=./target/test-repo/swap
+nifi.swap.in.period=5 sec
+nifi.swap.in.threads=1
+nifi.swap.out.period=5 sec
+nifi.swap.out.threads=4
+
+# Content Repository
+nifi.content.claim.max.appendable.size=10 MB
+nifi.content.claim.max.flow.files=100
+nifi.content.repository.directory.default=./target/content_repository
+
+# Provenance Repository Properties
+nifi.provenance.repository.storage.directory=./target/provenance_repository
+nifi.provenance.repository.max.storage.time=24 hours
+nifi.provenance.repository.max.storage.size=1 GB
+nifi.provenance.repository.rollover.time=5 mins
+nifi.provenance.repository.rollover.size=100 MB
+
+# Site to Site properties
+nifi.remote.input.socket.port=9990
+nifi.remote.input.secure=true
+
+# web properties #
+nifi.web.war.directory=./target/lib
+nifi.web.http.host=
+nifi.web.http.port=8080
+nifi.web.https.host=
+nifi.web.https.port=
+nifi.web.jetty.working.directory=./target/work/jetty
+
+# security properties #
+nifi.sensitive.props.key=key
+nifi.sensitive.props.algorithm=PBEWITHMD5AND256BITAES-CBC-OPENSSL
+nifi.sensitive.props.provider=BC
+
+nifi.security.keystore=
+nifi.security.keystoreType=
+nifi.security.keystorePasswd=
+nifi.security.keyPasswd=
+nifi.security.truststore=
+nifi.security.truststoreType=
+nifi.security.truststorePasswd=
+nifi.security.needClientAuth=
+nifi.security.authorizedUsers.file=./target/conf/authorized-users.xml
+nifi.security.user.credential.cache.duration=24 hours
+nifi.security.user.authority.provider=nifi.authorization.FileAuthorizationProvider
+nifi.security.support.new.account.requests=
+nifi.security.default.user.roles=
+
+# cluster common properties (cluster manager and nodes must have same values) #
+nifi.cluster.protocol.heartbeat.interval=5 sec
+nifi.cluster.protocol.is.secure=false
+nifi.cluster.protocol.socket.timeout=30 sec
+nifi.cluster.protocol.connection.handshake.timeout=45 sec
+# if multicast is used, then nifi.cluster.protocol.multicast.xxx properties must be configured #
+nifi.cluster.protocol.use.multicast=false
+nifi.cluster.protocol.multicast.address=
+nifi.cluster.protocol.multicast.port=
+nifi.cluster.protocol.multicast.service.broadcast.delay=500 ms
+nifi.cluster.protocol.multicast.service.locator.attempts=3
+nifi.cluster.protocol.multicast.service.locator.attempts.delay=1 sec
+
+# cluster node properties (only configure for cluster nodes) #
+nifi.cluster.is.node=false
+nifi.cluster.node.address=
+nifi.cluster.node.protocol.port=
+nifi.cluster.node.protocol.threads=2
+# if multicast is not used, nifi.cluster.node.unicast.xxx must have same values as nifi.cluster.manager.xxx #
+nifi.cluster.node.unicast.manager.address=
+nifi.cluster.node.unicast.manager.protocol.port=
+nifi.cluster.node.unicast.manager.authority.provider.port=
+
+# cluster manager properties (only configure for cluster manager) #
+nifi.cluster.is.manager=false
+nifi.cluster.manager.address=
+nifi.cluster.manager.protocol.port=
+nifi.cluster.manager.authority.provider.port=
+nifi.cluster.manager.authority.provider.threads=10
+nifi.cluster.manager.node.firewall.file=
+nifi.cluster.manager.node.event.history.size=10
+nifi.cluster.manager.node.api.connection.timeout=30 sec
+nifi.cluster.manager.node.api.read.timeout=30 sec
+nifi.cluster.manager.node.api.request.threads=10
+nifi.cluster.manager.flow.retrieval.delay=5 sec
+nifi.cluster.manager.protocol.threads=10
+nifi.cluster.manager.safemode.duration=0 sec

nifi/nifi-commons/nifi-properties/src/test/resources/NiFiProperties/conf/nifi.properties

@@ -0,0 +1,128 @@
+# 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.
+
+# Core Properties #
+nifi.version=nifi-test 3.0.0
+nifi.flow.configuration.file=./target/flow.xml.gz
+nifi.flow.configuration.archive.dir=./target/archive/
+nifi.flowcontroller.autoResumeState=true
+nifi.flowcontroller.graceful.shutdown.period=10 sec
+nifi.flowservice.writedelay.interval=2 sec
+nifi.administrative.yield.duration=30 sec
+
+nifi.reporting.task.configuration.file=./target/reporting-tasks.xml
+nifi.controller.service.configuration.file=./target/controller-services.xml
+nifi.templates.directory=./target/templates
+nifi.ui.banner.text=UI Banner Text
+nifi.ui.autorefresh.interval=30 sec
+nifi.nar.library.directory=./target/resources/NiFiProperties/lib/
+nifi.nar.library.directory.alt=./target/resources/NiFiProperties/lib2/
+nifi.nar.working.directory=./target/work/nar/
+
+# H2 Settings
+nifi.database.directory=./target/database_repository
+nifi.h2.url.append=;LOCK_TIMEOUT=25000;WRITE_DELAY=0;AUTO_SERVER=FALSE
+
+# FlowFile Repository
+nifi.flowfile.repository.directory=./target/test-repo
+nifi.flowfile.repository.partitions=1
+nifi.flowfile.repository.checkpoint.interval=2 mins
+nifi.queue.swap.threshold=20000
+nifi.swap.storage.directory=./target/test-repo/swap
+nifi.swap.in.period=5 sec
+nifi.swap.in.threads=1
+nifi.swap.out.period=5 sec
+nifi.swap.out.threads=4
+
+# Content Repository
+nifi.content.claim.max.appendable.size=10 MB
+nifi.content.claim.max.flow.files=100
+nifi.content.repository.directory.default=./target/content_repository
+
+# Provenance Repository Properties
+nifi.provenance.repository.storage.directory=./target/provenance_repository
+nifi.provenance.repository.max.storage.time=24 hours
+nifi.provenance.repository.max.storage.size=1 GB
+nifi.provenance.repository.rollover.time=5 mins
+nifi.provenance.repository.rollover.size=100 MB
+
+# Site to Site properties
+nifi.remote.input.socket.port=9990
+nifi.remote.input.secure=true
+
+# web properties #
+nifi.web.war.directory=./target/lib
+nifi.web.http.host=
+nifi.web.http.port=8080
+nifi.web.https.host=
+nifi.web.https.port=
+nifi.web.jetty.working.directory=./target/work/jetty
+
+# security properties #
+nifi.sensitive.props.key=key
+nifi.sensitive.props.algorithm=PBEWITHMD5AND256BITAES-CBC-OPENSSL
+nifi.sensitive.props.provider=BC
+
+nifi.security.keystore=
+nifi.security.keystoreType=
+nifi.security.keystorePasswd=
+nifi.security.keyPasswd=
+nifi.security.truststore=
+nifi.security.truststoreType=
+nifi.security.truststorePasswd=
+nifi.security.needClientAuth=
+nifi.security.authorizedUsers.file=./target/conf/authorized-users.xml
+nifi.security.user.credential.cache.duration=24 hours
+nifi.security.user.authority.provider=nifi.authorization.FileAuthorizationProvider
+nifi.security.support.new.account.requests=
+nifi.security.default.user.roles=
+
+# cluster common properties (cluster manager and nodes must have same values) #
+nifi.cluster.protocol.heartbeat.interval=5 sec
+nifi.cluster.protocol.is.secure=false
+nifi.cluster.protocol.socket.timeout=30 sec
+nifi.cluster.protocol.connection.handshake.timeout=45 sec
+# if multicast is used, then nifi.cluster.protocol.multicast.xxx properties must be configured #
+nifi.cluster.protocol.use.multicast=false
+nifi.cluster.protocol.multicast.address=
+nifi.cluster.protocol.multicast.port=
+nifi.cluster.protocol.multicast.service.broadcast.delay=500 ms
+nifi.cluster.protocol.multicast.service.locator.attempts=3
+nifi.cluster.protocol.multicast.service.locator.attempts.delay=1 sec
+
+# cluster node properties (only configure for cluster nodes) #
+nifi.cluster.is.node=false
+nifi.cluster.node.address=
+nifi.cluster.node.protocol.port=
+nifi.cluster.node.protocol.threads=2
+# if multicast is not used, nifi.cluster.node.unicast.xxx must have same values as nifi.cluster.manager.xxx #
+nifi.cluster.node.unicast.manager.address=
+nifi.cluster.node.unicast.manager.protocol.port=
+nifi.cluster.node.unicast.manager.authority.provider.port=
+
+# cluster manager properties (only configure for cluster manager) #
+nifi.cluster.is.manager=false
+nifi.cluster.manager.address=
+nifi.cluster.manager.protocol.port=
+nifi.cluster.manager.authority.provider.port=
+nifi.cluster.manager.authority.provider.threads=10
+nifi.cluster.manager.node.firewall.file=
+nifi.cluster.manager.node.event.history.size=10
+nifi.cluster.manager.node.api.connection.timeout=30 sec
+nifi.cluster.manager.node.api.read.timeout=30 sec
+nifi.cluster.manager.node.api.request.threads=10
+nifi.cluster.manager.flow.retrieval.delay=5 sec
+nifi.cluster.manager.protocol.threads=10
+nifi.cluster.manager.safemode.duration=0 sec

nifi/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-nar-utils/src/main/java/org/apache/nifi/nar/NarUnpacker.java

@@ -25,6 +25,7 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.nio.file.Files;
+import java.nio.file.Path;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.util.ArrayList;
@@ -41,7 +42,6 @@ import java.util.jar.Manifest;
 import org.apache.nifi.util.FileUtils;
 import org.apache.nifi.util.NiFiProperties;
 import org.apache.nifi.util.StringUtils;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -61,22 +61,35 @@ public final class NarUnpacker {
     };
 
     public static ExtensionMapping unpackNars(final NiFiProperties props) {
-        final File narLibraryDir = props.getNarLibraryDirectory();
+        final List<Path> narLibraryDirs = props.getNarLibraryDirectories();
         final File frameworkWorkingDir = props.getFrameworkWorkingDirectory();
         final File extensionsWorkingDir = props.getExtensionsWorkingDirectory();
         final File docsWorkingDir = props.getComponentDocumentationWorkingDirectory();
 
         try {
-            // make sure the nar directories are there and accessible
+            File unpackedFramework = null;
-            FileUtils.ensureDirectoryExistAndCanAccess(narLibraryDir);
+            final Set<File> unpackedExtensions = new HashSet<>();
+            final List<File> narFiles = new ArrayList<>();
+
+            // make sure the nar directories are there and accessible   
             FileUtils.ensureDirectoryExistAndCanAccess(frameworkWorkingDir);
             FileUtils.ensureDirectoryExistAndCanAccess(extensionsWorkingDir);
             FileUtils.ensureDirectoryExistAndCanAccess(docsWorkingDir);
 
-            File unpackedFramework = null;
+			for (Path narLibraryDir : narLibraryDirs) {
-            final Set<File> unpackedExtensions = new HashSet<>();
+				
-            final File[] narFiles = narLibraryDir.listFiles(NAR_FILTER);
+				File narDir = narLibraryDir.toFile();
-            if (narFiles != null) {
+				FileUtils.ensureDirectoryExistAndCanAccess(narDir);
+				
+				File[] dirFiles = narDir.listFiles(NAR_FILTER);
+				if (dirFiles != null){
+					List<File> fileList = Arrays.asList(dirFiles);
+					narFiles.addAll(fileList);
+				}
+			}          
+            
+            
+            if (!narFiles.isEmpty()) {
                 for (File narFile : narFiles) {
                     logger.debug("Expanding NAR file: " + narFile.getAbsolutePath());
 

nifi/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-nar-utils/src/test/java/org/apache/nifi/nar/NarUnpackerTest.java

@@ -0,0 +1,177 @@
+package org.apache.nifi.nar;
+
+import static java.nio.file.StandardCopyOption.REPLACE_EXISTING;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.FileVisitResult;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.SimpleFileVisitor;
+import java.nio.file.attribute.BasicFileAttributes;
+
+import org.apache.nifi.util.NiFiProperties;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+public class NarUnpackerTest {
+
+	@BeforeClass
+	public static void copyResources() throws IOException {
+
+		final Path sourcePath = Paths.get("./src/test/resources");
+		final Path targetPath = Paths.get("./target");
+		
+		Files.walkFileTree(sourcePath, new SimpleFileVisitor<Path>() {
+
+			@Override
+			public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
+
+				Path relativeSource = sourcePath.relativize(dir);
+				Path target = targetPath.resolve(relativeSource);
+
+				Files.createDirectories(target);
+
+				return FileVisitResult.CONTINUE;
+
+			}
+
+			@Override
+			public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
+
+				Path relativeSource = sourcePath.relativize(file);
+				Path target = targetPath.resolve(relativeSource);
+
+				Files.copy(file, target, REPLACE_EXISTING);
+
+				return FileVisitResult.CONTINUE;
+			}
+		});
+	}
+
+	@Test
+	public void testUnpackNars() {
+
+		NiFiProperties properties = loadSpecifiedProperties("/NarUnpacker/conf/nifi.properties");
+
+		assertEquals("./target/NarUnpacker/lib/", properties.getProperty("nifi.nar.library.directory"));
+		assertEquals("./target/NarUnpacker/lib2/", properties.getProperty("nifi.nar.library.directory.alt"));
+
+		final ExtensionMapping extensionMapping = NarUnpacker.unpackNars(properties);
+
+		assertEquals(2,extensionMapping.getAllExtensionNames().size());
+
+		assertTrue(extensionMapping.getAllExtensionNames().contains("org.apache.nifi.processors.dummy.one"));
+		assertTrue(extensionMapping.getAllExtensionNames().contains("org.apache.nifi.processors.dummy.two"));
+
+		final File extensionsWorkingDir = properties.getExtensionsWorkingDirectory();
+		File[] extensionFiles = extensionsWorkingDir.listFiles();
+		
+		assertEquals(2,extensionFiles.length);
+		assertEquals("dummy-one.nar-unpacked", extensionFiles[0].getName());
+		assertEquals("dummy-two.nar-unpacked", extensionFiles[1].getName());
+	}
+
+	@Test
+	public void testUnpackNarsFromEmptyDir() throws IOException {
+
+		NiFiProperties properties = loadSpecifiedProperties("/NarUnpacker/conf/nifi.properties");
+		
+		final File emptyDir = new File ("./target/empty/dir");
+		emptyDir.delete();
+		emptyDir.deleteOnExit();
+		assertTrue(emptyDir.mkdirs());
+		
+		properties.setProperty("nifi.nar.library.directory.alt", emptyDir.toString());
+
+		final ExtensionMapping extensionMapping = NarUnpacker.unpackNars(properties);
+
+		assertEquals(1,extensionMapping.getAllExtensionNames().size());
+		assertTrue(extensionMapping.getAllExtensionNames().contains("org.apache.nifi.processors.dummy.one"));
+		
+        final File extensionsWorkingDir = properties.getExtensionsWorkingDirectory();
+		File[] extensionFiles = extensionsWorkingDir.listFiles();
+		
+		assertEquals(1,extensionFiles.length);
+		assertEquals("dummy-one.nar-unpacked", extensionFiles[0].getName());
+	}
+
+	@Test
+	public void testUnpackNarsFromNonExistantDir() {
+		
+		final File nonExistantDir = new File ("./target/this/dir/should/not/exist/");
+		nonExistantDir.delete();
+		nonExistantDir.deleteOnExit();
+
+		NiFiProperties properties = loadSpecifiedProperties("/NarUnpacker/conf/nifi.properties");
+		properties.setProperty("nifi.nar.library.directory.alt", nonExistantDir.toString());
+
+		final ExtensionMapping extensionMapping = NarUnpacker.unpackNars(properties);
+		
+		assertTrue(extensionMapping.getAllExtensionNames().contains("org.apache.nifi.processors.dummy.one"));
+		
+		assertEquals(1,extensionMapping.getAllExtensionNames().size());
+		
+        final File extensionsWorkingDir = properties.getExtensionsWorkingDirectory();
+		File[] extensionFiles = extensionsWorkingDir.listFiles();
+		
+		assertEquals(1,extensionFiles.length);
+		assertEquals("dummy-one.nar-unpacked", extensionFiles[0].getName());
+	}
+
+	@Test
+	public void testUnpackNarsFromNonDir() throws IOException {
+		
+		final File nonDir = new File ("./target/file.txt");
+		nonDir.createNewFile();
+		nonDir.deleteOnExit();
+
+		NiFiProperties properties = loadSpecifiedProperties("/NarUnpacker/conf/nifi.properties");
+		properties.setProperty("nifi.nar.library.directory.alt", nonDir.toString());
+
+		final ExtensionMapping extensionMapping = NarUnpacker.unpackNars(properties);
+		
+		assertNull(extensionMapping);
+	}
+
+
+	private NiFiProperties loadSpecifiedProperties(String propertiesFile) {
+		String file = NarUnpackerTest.class.getResource(propertiesFile).getFile();
+
+		System.setProperty(NiFiProperties.PROPERTIES_FILE_PATH, file);
+
+		NiFiProperties properties = NiFiProperties.getInstance();
+
+		// clear out existing properties
+		for (String prop : properties.stringPropertyNames()) {
+			properties.remove(prop);
+		}
+
+		InputStream inStream = null;
+		try {
+			inStream = new BufferedInputStream(new FileInputStream(file));
+			properties.load(inStream);
+		} catch (final Exception ex) {
+			throw new RuntimeException("Cannot load properties file due to " + ex.getLocalizedMessage(), ex);
+		} finally {
+			if (null != inStream) {
+				try {
+					inStream.close();
+				} catch (final Exception ex) {
+					/**
+					 * do nothing *
+					 */
+				}
+			}
+		}
+
+		return properties;
+	}
+}

nifi/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-nar-utils/src/test/resources/NarUnpacker/conf/nifi.properties

@@ -0,0 +1,129 @@
+# 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.
+
+# Core Properties #
+nifi.version=nifi-test 3.0.0
+nifi.flow.configuration.file=./target/flow.xml.gz
+nifi.flow.configuration.archive.dir=./target/archive/
+nifi.flowcontroller.autoResumeState=true
+nifi.flowcontroller.graceful.shutdown.period=10 sec
+nifi.flowservice.writedelay.interval=2 sec
+nifi.administrative.yield.duration=30 sec
+
+nifi.reporting.task.configuration.file=./target/reporting-tasks.xml
+nifi.controller.service.configuration.file=./target/controller-services.xml
+nifi.templates.directory=./target/templates
+nifi.ui.banner.text=UI Banner Text
+nifi.ui.autorefresh.interval=30 sec
+nifi.nar.library.directory=./target/NarUnpacker/lib/
+nifi.nar.library.directory.alt=./target/NarUnpacker/lib2/
+
+nifi.nar.working.directory=./target/work/nar/
+
+# H2 Settings
+nifi.database.directory=./target/database_repository
+nifi.h2.url.append=;LOCK_TIMEOUT=25000;WRITE_DELAY=0;AUTO_SERVER=FALSE
+
+# FlowFile Repository
+nifi.flowfile.repository.directory=./target/test-repo
+nifi.flowfile.repository.partitions=1
+nifi.flowfile.repository.checkpoint.interval=2 mins
+nifi.queue.swap.threshold=20000
+nifi.swap.storage.directory=./target/test-repo/swap
+nifi.swap.in.period=5 sec
+nifi.swap.in.threads=1
+nifi.swap.out.period=5 sec
+nifi.swap.out.threads=4
+
+# Content Repository
+nifi.content.claim.max.appendable.size=10 MB
+nifi.content.claim.max.flow.files=100
+nifi.content.repository.directory.default=./target/content_repository
+
+# Provenance Repository Properties
+nifi.provenance.repository.storage.directory=./target/provenance_repository
+nifi.provenance.repository.max.storage.time=24 hours
+nifi.provenance.repository.max.storage.size=1 GB
+nifi.provenance.repository.rollover.time=5 mins
+nifi.provenance.repository.rollover.size=100 MB
+
+# Site to Site properties
+nifi.remote.input.socket.port=9990
+nifi.remote.input.secure=true
+
+# web properties #
+nifi.web.war.directory=./target/lib
+nifi.web.http.host=
+nifi.web.http.port=8080
+nifi.web.https.host=
+nifi.web.https.port=
+nifi.web.jetty.working.directory=./target/work/jetty
+
+# security properties #
+nifi.sensitive.props.key=key
+nifi.sensitive.props.algorithm=PBEWITHMD5AND256BITAES-CBC-OPENSSL
+nifi.sensitive.props.provider=BC
+
+nifi.security.keystore=
+nifi.security.keystoreType=
+nifi.security.keystorePasswd=
+nifi.security.keyPasswd=
+nifi.security.truststore=
+nifi.security.truststoreType=
+nifi.security.truststorePasswd=
+nifi.security.needClientAuth=
+nifi.security.authorizedUsers.file=./target/conf/authorized-users.xml
+nifi.security.user.credential.cache.duration=24 hours
+nifi.security.user.authority.provider=nifi.authorization.FileAuthorizationProvider
+nifi.security.support.new.account.requests=
+nifi.security.default.user.roles=
+
+# cluster common properties (cluster manager and nodes must have same values) #
+nifi.cluster.protocol.heartbeat.interval=5 sec
+nifi.cluster.protocol.is.secure=false
+nifi.cluster.protocol.socket.timeout=30 sec
+nifi.cluster.protocol.connection.handshake.timeout=45 sec
+# if multicast is used, then nifi.cluster.protocol.multicast.xxx properties must be configured #
+nifi.cluster.protocol.use.multicast=false
+nifi.cluster.protocol.multicast.address=
+nifi.cluster.protocol.multicast.port=
+nifi.cluster.protocol.multicast.service.broadcast.delay=500 ms
+nifi.cluster.protocol.multicast.service.locator.attempts=3
+nifi.cluster.protocol.multicast.service.locator.attempts.delay=1 sec
+
+# cluster node properties (only configure for cluster nodes) #
+nifi.cluster.is.node=false
+nifi.cluster.node.address=
+nifi.cluster.node.protocol.port=
+nifi.cluster.node.protocol.threads=2
+# if multicast is not used, nifi.cluster.node.unicast.xxx must have same values as nifi.cluster.manager.xxx #
+nifi.cluster.node.unicast.manager.address=
+nifi.cluster.node.unicast.manager.protocol.port=
+nifi.cluster.node.unicast.manager.authority.provider.port=
+
+# cluster manager properties (only configure for cluster manager) #
+nifi.cluster.is.manager=false
+nifi.cluster.manager.address=
+nifi.cluster.manager.protocol.port=
+nifi.cluster.manager.authority.provider.port=
+nifi.cluster.manager.authority.provider.threads=10
+nifi.cluster.manager.node.firewall.file=
+nifi.cluster.manager.node.event.history.size=10
+nifi.cluster.manager.node.api.connection.timeout=30 sec
+nifi.cluster.manager.node.api.read.timeout=30 sec
+nifi.cluster.manager.node.api.request.threads=10
+nifi.cluster.manager.flow.retrieval.delay=5 sec
+nifi.cluster.manager.protocol.threads=10
+nifi.cluster.manager.safemode.duration=0 sec