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From mthom...@apache.org
Subject [2/2] nifi git commit: NIFI-5621: Added Cassandra connection provider service NIFI-5621: Improvements on LICENSE & NOTICE files
Date Wed, 12 Dec 2018 15:01:02 GMT
NIFI-5621: Added Cassandra connection provider service
NIFI-5621: Improvements on LICENSE & NOTICE files

This closes #3105

Signed-off-by: Mike Thomsen <mikerthomsen@gmail.com>


Project: http://git-wip-us.apache.org/repos/asf/nifi/repo
Commit: http://git-wip-us.apache.org/repos/asf/nifi/commit/9a1ab4c5
Tree: http://git-wip-us.apache.org/repos/asf/nifi/tree/9a1ab4c5
Diff: http://git-wip-us.apache.org/repos/asf/nifi/diff/9a1ab4c5

Branch: refs/heads/master
Commit: 9a1ab4c504eb2707448e24388c66efbf15fec3bb
Parents: 85cc5aa
Author: zenfenan <sivaprasanna246@gmail.com>
Authored: Sun Oct 21 23:11:07 2018 +0530
Committer: Mike Thomsen <mikerthomsen@gmail.com>
Committed: Wed Dec 12 09:59:32 2018 -0500

----------------------------------------------------------------------
 nifi-assembly/pom.xml                           |  12 +
 .../nifi-cassandra-nar/pom.xml                  |   2 +-
 .../nifi-cassandra-processors/pom.xml           |  12 +-
 .../cassandra/AbstractCassandraProcessor.java   | 131 +++++--
 .../processors/cassandra/PutCassandraQL.java    |  23 +-
 .../cassandra/PutCassandraRecord.java           |  29 +-
 .../processors/cassandra/QueryCassandra.java    |  35 +-
 .../AbstractCassandraProcessorTest.java         |  48 ++-
 .../nifi-cassandra-services-api-nar/pom.xml     |  45 +++
 .../src/main/resources/META-INF/LICENSE         | 266 +++++++++++++
 .../src/main/resources/META-INF/NOTICE          | 226 ++++++++++++
 .../nifi-cassandra-services-api/pom.xml         |  43 +++
 .../CassandraSessionProviderService.java        |  35 ++
 .../nifi-cassandra-services-nar/pom.xml         |  43 +++
 .../src/main/resources/META-INF/LICENSE         | 369 +++++++++++++++++++
 .../src/main/resources/META-INF/NOTICE          | 291 +++++++++++++++
 .../nifi-cassandra-services/pom.xml             |  82 +++++
 .../nifi/service/CassandraSessionProvider.java  | 285 ++++++++++++++
 ...org.apache.nifi.controller.ControllerService |  16 +
 .../nifi/service/MockCassandraProcessor.java    |  51 +++
 .../service/TestCassandraSessionProvider.java   |  59 +++
 nifi-nar-bundles/nifi-cassandra-bundle/pom.xml  |   8 +
 nifi-nar-bundles/pom.xml                        |   5 +
 23 files changed, 2008 insertions(+), 108 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/nifi/blob/9a1ab4c5/nifi-assembly/pom.xml
----------------------------------------------------------------------
diff --git a/nifi-assembly/pom.xml b/nifi-assembly/pom.xml
index 87a4ce7..05d1b54 100755
--- a/nifi-assembly/pom.xml
+++ b/nifi-assembly/pom.xml
@@ -537,6 +537,18 @@ language governing permissions and limitations under the License. -->
         </dependency>
         <dependency>
             <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-cassandra-services-api-nar</artifactId>
+            <version>1.9.0-SNAPSHOT</version>
+            <type>nar</type>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-cassandra-services-nar</artifactId>
+            <version>1.9.0-SNAPSHOT</version>
+            <type>nar</type>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
             <artifactId>nifi-spring-nar</artifactId>
             <version>1.9.0-SNAPSHOT</version>
             <type>nar</type>

http://git-wip-us.apache.org/repos/asf/nifi/blob/9a1ab4c5/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-nar/pom.xml
----------------------------------------------------------------------
diff --git a/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-nar/pom.xml b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-nar/pom.xml
index a0e54b5..3735e2e 100644
--- a/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-nar/pom.xml
+++ b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-nar/pom.xml
@@ -32,7 +32,7 @@
     <dependencies>
         <dependency>
             <groupId>org.apache.nifi</groupId>
-            <artifactId>nifi-standard-services-api-nar</artifactId>
+            <artifactId>nifi-cassandra-services-api-nar</artifactId>
             <version>1.9.0-SNAPSHOT</version>
             <type>nar</type>
         </dependency>

http://git-wip-us.apache.org/repos/asf/nifi/blob/9a1ab4c5/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/pom.xml
----------------------------------------------------------------------
diff --git a/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/pom.xml b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/pom.xml
index c3239c4..84fb2e4 100644
--- a/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/pom.xml
+++ b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/pom.xml
@@ -42,11 +42,12 @@
         <dependency>
             <groupId>com.datastax.cassandra</groupId>
             <artifactId>cassandra-driver-core</artifactId>
-            <version>3.3.0</version>
+            <version>${cassandra.sdk.version}</version>
         </dependency>
         <dependency>
             <groupId>org.apache.nifi</groupId>
             <artifactId>nifi-ssl-context-service-api</artifactId>
+            <scope>provided</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.avro</groupId>
@@ -55,13 +56,13 @@
         </dependency>
         <dependency>
             <groupId>org.apache.nifi</groupId>
-            <artifactId>nifi-mock</artifactId>
-            <version>1.9.0-SNAPSHOT</version>
-            <scope>test</scope>
+            <artifactId>nifi-cassandra-services-api</artifactId>
+            <scope>provided</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.nifi</groupId>
-            <artifactId>nifi-ssl-context-service</artifactId>
+            <artifactId>nifi-cassandra-services</artifactId>
+            <version>1.9.0-SNAPSHOT</version>
             <scope>test</scope>
         </dependency>
         <dependency>
@@ -78,6 +79,7 @@
             <groupId>org.apache.nifi</groupId>
             <artifactId>nifi-mock-record-utils</artifactId>
             <version>1.9.0-SNAPSHOT</version>
+            <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.commons</groupId>

http://git-wip-us.apache.org/repos/asf/nifi/blob/9a1ab4c5/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/AbstractCassandraProcessor.java
----------------------------------------------------------------------
diff --git a/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/AbstractCassandraProcessor.java b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/AbstractCassandraProcessor.java
index d1e3874..8444120 100644
--- a/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/AbstractCassandraProcessor.java
+++ b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/AbstractCassandraProcessor.java
@@ -25,10 +25,14 @@ import com.datastax.driver.core.Metadata;
 import com.datastax.driver.core.Row;
 import com.datastax.driver.core.Session;
 import com.datastax.driver.core.TypeCodec;
+import com.datastax.driver.core.exceptions.AuthenticationException;
+import com.datastax.driver.core.exceptions.NoHostAvailableException;
 import org.apache.avro.Schema;
 import org.apache.avro.SchemaBuilder;
 import org.apache.commons.lang3.StringUtils;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
 import org.apache.nifi.authentication.exception.ProviderCreationException;
+import org.apache.nifi.cassandra.CassandraSessionProviderService;
 import org.apache.nifi.components.PropertyDescriptor;
 import org.apache.nifi.components.PropertyValue;
 import org.apache.nifi.components.ValidationContext;
@@ -38,6 +42,7 @@ import org.apache.nifi.logging.ComponentLog;
 import org.apache.nifi.processor.AbstractProcessor;
 import org.apache.nifi.processor.ProcessContext;
 import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
 import org.apache.nifi.processor.util.StandardValidators;
 import org.apache.nifi.security.util.SslContextFactory;
 import org.apache.nifi.ssl.SSLContextService;
@@ -61,26 +66,36 @@ public abstract class AbstractCassandraProcessor extends AbstractProcessor {
     public static final int DEFAULT_CASSANDRA_PORT = 9042;
 
     // Common descriptors
-    public static final PropertyDescriptor CONTACT_POINTS = new PropertyDescriptor.Builder()
+    static final PropertyDescriptor CONNECTION_PROVIDER_SERVICE = new PropertyDescriptor.Builder()
+            .name("cassandra-connection-provider")
+            .displayName("Cassandra Connection Provider")
+            .description("Specifies the Cassandra connection providing controller service to be used to connect to Cassandra cluster.")
+            .required(false)
+            .identifiesControllerService(CassandraSessionProviderService.class)
+            .build();
+
+    static final PropertyDescriptor CONTACT_POINTS = new PropertyDescriptor.Builder()
             .name("Cassandra Contact Points")
             .description("Contact points are addresses of Cassandra nodes. The list of contact points should be "
                     + "comma-separated and in hostname:port format. Example node1:port,node2:port,...."
                     + " The default client port for Cassandra is 9042, but the port(s) must be explicitly specified.")
-            .required(true)
+            .required(false)
             .expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY)
             .addValidator(StandardValidators.HOSTNAME_PORT_LIST_VALIDATOR)
             .build();
 
-    public static final PropertyDescriptor KEYSPACE = new PropertyDescriptor.Builder()
+    static final PropertyDescriptor KEYSPACE = new PropertyDescriptor.Builder()
             .name("Keyspace")
-            .description("The Cassandra Keyspace to connect to. If not set, the keyspace name has to be provided with the " +
+            .description("The Cassandra Keyspace to connect to. If no keyspace is specified, the query will need to " +
+                    "include the keyspace name before any table reference, in case of 'query' native processors or " +
+                    "if the processor exposes the 'Table' property, the keyspace name has to be provided with the " +
                     "table name in the form of <KEYSPACE>.<TABLE>")
             .required(false)
             .expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY)
             .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
             .build();
 
-    public static final PropertyDescriptor PROP_SSL_CONTEXT_SERVICE = new PropertyDescriptor.Builder()
+    static final PropertyDescriptor PROP_SSL_CONTEXT_SERVICE = new PropertyDescriptor.Builder()
             .name("SSL Context Service")
             .description("The SSL Context Service used to provide client certificate information for TLS/SSL "
                     + "connections.")
@@ -88,7 +103,7 @@ public abstract class AbstractCassandraProcessor extends AbstractProcessor {
             .identifiesControllerService(SSLContextService.class)
             .build();
 
-    public static final PropertyDescriptor CLIENT_AUTH = new PropertyDescriptor.Builder()
+    static final PropertyDescriptor CLIENT_AUTH = new PropertyDescriptor.Builder()
             .name("Client Auth")
             .description("Client authentication policy when connecting to secure (TLS/SSL) cluster. "
                     + "Possible values are REQUIRED, WANT, NONE. This property is only used when an SSL Context "
@@ -98,7 +113,7 @@ public abstract class AbstractCassandraProcessor extends AbstractProcessor {
             .defaultValue("REQUIRED")
             .build();
 
-    public static final PropertyDescriptor USERNAME = new PropertyDescriptor.Builder()
+    static final PropertyDescriptor USERNAME = new PropertyDescriptor.Builder()
             .name("Username")
             .description("Username to access the Cassandra cluster")
             .required(false)
@@ -106,7 +121,7 @@ public abstract class AbstractCassandraProcessor extends AbstractProcessor {
             .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
             .build();
 
-    public static final PropertyDescriptor PASSWORD = new PropertyDescriptor.Builder()
+    static final PropertyDescriptor PASSWORD = new PropertyDescriptor.Builder()
             .name("Password")
             .description("Password to access the Cassandra cluster")
             .required(false)
@@ -115,15 +130,15 @@ public abstract class AbstractCassandraProcessor extends AbstractProcessor {
             .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
             .build();
 
-    public static final PropertyDescriptor CONSISTENCY_LEVEL = new PropertyDescriptor.Builder()
+    static final PropertyDescriptor CONSISTENCY_LEVEL = new PropertyDescriptor.Builder()
             .name("Consistency Level")
             .description("The strategy for how many replicas must respond before results are returned.")
-            .required(true)
+            .required(false)
             .allowableValues(ConsistencyLevel.values())
             .defaultValue("ONE")
             .build();
 
-    public static final PropertyDescriptor CHARSET = new PropertyDescriptor.Builder()
+    static final PropertyDescriptor CHARSET = new PropertyDescriptor.Builder()
             .name("Character Set")
             .description("Specifies the character set of the record data.")
             .required(true)
@@ -132,22 +147,25 @@ public abstract class AbstractCassandraProcessor extends AbstractProcessor {
             .addValidator(StandardValidators.CHARACTER_SET_VALIDATOR)
             .build();
 
-    public static final Relationship REL_SUCCESS = new Relationship.Builder()
+    static final Relationship REL_SUCCESS = new Relationship.Builder()
             .name("success")
             .description("A FlowFile is transferred to this relationship if the operation completed successfully.")
             .build();
-    public static final Relationship REL_FAILURE = new Relationship.Builder()
+
+    static final Relationship REL_FAILURE = new Relationship.Builder()
             .name("failure")
             .description("A FlowFile is transferred to this relationship if the operation failed.")
             .build();
-    public static final Relationship REL_RETRY = new Relationship.Builder().name("retry")
+
+    static final Relationship REL_RETRY = new Relationship.Builder().name("retry")
             .description("A FlowFile is transferred to this relationship if the operation cannot be completed but attempting "
                     + "it again may succeed.")
             .build();
 
-    static List<PropertyDescriptor> descriptors = new ArrayList<>();
+    protected static List<PropertyDescriptor> descriptors = new ArrayList<>();
 
     static {
+        descriptors.add(CONNECTION_PROVIDER_SERVICE);
         descriptors.add(CONTACT_POINTS);
         descriptors.add(KEYSPACE);
         descriptors.add(PROP_SSL_CONTEXT_SERVICE);
@@ -170,15 +188,53 @@ public abstract class AbstractCassandraProcessor extends AbstractProcessor {
         // Ensure that if username or password is set, then the other is too
         String userName = validationContext.getProperty(USERNAME).evaluateAttributeExpressions().getValue();
         String password = validationContext.getProperty(PASSWORD).evaluateAttributeExpressions().getValue();
+
         if (StringUtils.isEmpty(userName) != StringUtils.isEmpty(password)) {
-            results.add(new ValidationResult.Builder().valid(false).explanation(
+            results.add(new ValidationResult.Builder().subject("Username / Password configuration").valid(false).explanation(
                     "If username or password is specified, then the other must be specified as well").build());
         }
 
+        // Ensure that both Connection provider service and the processor specific configurations are not provided
+        boolean connectionProviderIsSet = validationContext.getProperty(CONNECTION_PROVIDER_SERVICE).isSet();
+        boolean contactPointsIsSet = validationContext.getProperty(CONTACT_POINTS).isSet();
+
+        if (connectionProviderIsSet && contactPointsIsSet) {
+            results.add(new ValidationResult.Builder().subject("Cassandra configuration").valid(false).explanation("both " + CONNECTION_PROVIDER_SERVICE.getDisplayName() +
+                        " and processor level Cassandra configuration cannot be provided at the same time.").build());
+        }
+
+        if (!connectionProviderIsSet && !contactPointsIsSet) {
+            results.add(new ValidationResult.Builder().subject("Cassandra configuration").valid(false).explanation("either " + CONNECTION_PROVIDER_SERVICE.getDisplayName() +
+                        " or processor level Cassandra configuration has to be provided.").build());
+        }
+
         return results;
     }
 
-    protected void connectToCassandra(ProcessContext context) {
+    @OnScheduled
+    public void onScheduled(ProcessContext context) {
+        final boolean connectionProviderIsSet = context.getProperty(CONNECTION_PROVIDER_SERVICE).isSet();
+
+        if (connectionProviderIsSet) {
+            CassandraSessionProviderService sessionProvider = context.getProperty(CONNECTION_PROVIDER_SERVICE).asControllerService(CassandraSessionProviderService.class);
+            cluster.set(sessionProvider.getCluster());
+            cassandraSession.set(sessionProvider.getCassandraSession());
+            return;
+        }
+
+        try {
+            connectToCassandra(context);
+        } catch (NoHostAvailableException nhae) {
+            getLogger().error("No host in the Cassandra cluster can be contacted successfully to execute this statement", nhae);
+            getLogger().error(nhae.getCustomMessage(10, true, false));
+            throw new ProcessException(nhae);
+        } catch (AuthenticationException ae) {
+            getLogger().error("Invalid username/password combination", ae);
+            throw new ProcessException(ae);
+        }
+    }
+
+    void connectToCassandra(ProcessContext context) {
         if (cluster.get() == null) {
             ComponentLog log = getLogger();
             final String contactPointList = context.getProperty(CONTACT_POINTS).evaluateAttributeExpressions().getValue();
@@ -186,13 +242,13 @@ public abstract class AbstractCassandraProcessor extends AbstractProcessor {
             List<InetSocketAddress> contactPoints = getContactPoints(contactPointList);
 
             // Set up the client for secure (SSL/TLS communications) if configured to do so
-            final SSLContextService sslService =
-                    context.getProperty(PROP_SSL_CONTEXT_SERVICE).asControllerService(SSLContextService.class);
+            final SSLContextService sslService = context.getProperty(PROP_SSL_CONTEXT_SERVICE).asControllerService(SSLContextService.class);
             final String rawClientAuth = context.getProperty(CLIENT_AUTH).getValue();
             final SSLContext sslContext;
 
             if (sslService != null) {
                 final SSLContextService.ClientAuth clientAuth;
+
                 if (StringUtils.isBlank(rawClientAuth)) {
                     clientAuth = SSLContextService.ClientAuth.REQUIRED;
                 } else {
@@ -203,6 +259,7 @@ public abstract class AbstractCassandraProcessor extends AbstractProcessor {
                                 rawClientAuth, StringUtils.join(SslContextFactory.ClientAuth.values(), ", ")));
                     }
                 }
+
                 sslContext = sslService.createSSLContext(clientAuth);
             } else {
                 sslContext = null;
@@ -223,15 +280,19 @@ public abstract class AbstractCassandraProcessor extends AbstractProcessor {
             // Create the cluster and connect to it
             Cluster newCluster = createCluster(contactPoints, sslContext, username, password);
             PropertyValue keyspaceProperty = context.getProperty(KEYSPACE).evaluateAttributeExpressions();
+
             final Session newSession;
             if (keyspaceProperty != null) {
                 newSession = newCluster.connect(keyspaceProperty.getValue());
             } else {
                 newSession = newCluster.connect();
             }
+
             newCluster.getConfiguration().getQueryOptions().setConsistencyLevel(ConsistencyLevel.valueOf(consistencyLevel));
             Metadata metadata = newCluster.getMetadata();
+
             log.info("Connected to Cassandra cluster: {}", new Object[]{metadata.getClusterName()});
+
             cluster.set(newCluster);
             cassandraSession.set(newSession);
         }
@@ -261,14 +322,20 @@ public abstract class AbstractCassandraProcessor extends AbstractProcessor {
         return builder.build();
     }
 
-    public void stop() {
-        if (cassandraSession.get() != null) {
-            cassandraSession.get().close();
-            cassandraSession.set(null);
-        }
-        if (cluster.get() != null) {
-            cluster.get().close();
-            cluster.set(null);
+    public void stop(ProcessContext context) {
+        // We don't want to close the connection when using 'Cassandra Connection Provider'
+        // because each time @OnUnscheduled/@OnShutdown annotated method is triggered on a
+        // processor, the connection would be closed which is not ideal for a centralized
+        // connection provider controller service
+        if (!context.getProperty(CONNECTION_PROVIDER_SERVICE).isSet()) {
+            if (cassandraSession.get() != null) {
+                cassandraSession.get().close();
+                cassandraSession.set(null);
+            }
+            if (cluster.get() != null) {
+                cluster.get().close();
+                cluster.set(null);
+            }
         }
     }
 
@@ -350,7 +417,7 @@ public abstract class AbstractCassandraProcessor extends AbstractProcessor {
      *
      * @param dataType The data type of the field
      */
-    public static Schema getUnionFieldType(String dataType) {
+    protected static Schema getUnionFieldType(String dataType) {
         return SchemaBuilder.builder().unionOf().nullBuilder().endNull().and().type(getSchemaForType(dataType)).endUnion();
     }
 
@@ -359,7 +426,7 @@ public abstract class AbstractCassandraProcessor extends AbstractProcessor {
      *
      * @param dataType The data type of the field
      */
-    public static Schema getSchemaForType(String dataType) {
+    protected static Schema getSchemaForType(String dataType) {
         SchemaBuilder.TypeBuilder<Schema> typeBuilder = SchemaBuilder.builder();
         Schema returnSchema;
         switch (dataType) {
@@ -390,7 +457,7 @@ public abstract class AbstractCassandraProcessor extends AbstractProcessor {
         return returnSchema;
     }
 
-    public static String getPrimitiveAvroTypeFromCassandraType(DataType dataType) {
+    protected static String getPrimitiveAvroTypeFromCassandraType(DataType dataType) {
         // Map types from Cassandra to Avro where possible
         if (dataType.equals(DataType.ascii())
                 || dataType.equals(DataType.text())
@@ -428,7 +495,7 @@ public abstract class AbstractCassandraProcessor extends AbstractProcessor {
         }
     }
 
-    public static DataType getPrimitiveDataTypeFromString(String dataTypeName) {
+    protected static DataType getPrimitiveDataTypeFromString(String dataTypeName) {
         Set<DataType> primitiveTypes = DataType.allPrimitiveTypes();
         for (DataType primitiveType : primitiveTypes) {
             if (primitiveType.toString().equals(dataTypeName)) {
@@ -444,7 +511,7 @@ public abstract class AbstractCassandraProcessor extends AbstractProcessor {
      * @param contactPointList A comma-separated list of Cassandra contact points (host:port,host2:port2, etc.)
      * @return List of InetSocketAddresses for the Cassandra contact points
      */
-    public List<InetSocketAddress> getContactPoints(String contactPointList) {
+    protected List<InetSocketAddress> getContactPoints(String contactPointList) {
 
         if (contactPointList == null) {
             return null;

http://git-wip-us.apache.org/repos/asf/nifi/blob/9a1ab4c5/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/PutCassandraQL.java
----------------------------------------------------------------------
diff --git a/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/PutCassandraQL.java b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/PutCassandraQL.java
index 1b14874..5edc973 100644
--- a/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/PutCassandraQL.java
+++ b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/PutCassandraQL.java
@@ -22,7 +22,6 @@ import com.datastax.driver.core.PreparedStatement;
 import com.datastax.driver.core.ResultSetFuture;
 import com.datastax.driver.core.Session;
 import com.datastax.driver.core.TypeCodec;
-import com.datastax.driver.core.exceptions.AuthenticationException;
 import com.datastax.driver.core.exceptions.InvalidTypeException;
 import com.datastax.driver.core.exceptions.NoHostAvailableException;
 import com.datastax.driver.core.exceptions.QueryExecutionException;
@@ -163,7 +162,7 @@ public class PutCassandraQL extends AbstractCassandraProcessor {
 
     @OnScheduled
     public void onScheduled(final ProcessContext context) {
-        ComponentLog log = getLogger();
+        super.onScheduled(context);
 
         // Initialize the prepared statement cache
         int statementCacheSize = context.getProperty(STATEMENT_CACHE_SIZE).evaluateAttributeExpressions().asInteger();
@@ -171,22 +170,6 @@ public class PutCassandraQL extends AbstractCassandraProcessor {
                 .maximumSize(statementCacheSize)
                 .<String, PreparedStatement>build()
                 .asMap();
-
-        try {
-            connectToCassandra(context);
-
-        } catch (final NoHostAvailableException nhae) {
-            log.error("No host in the Cassandra cluster can be contacted successfully to execute this statement", nhae);
-            // Log up to 10 error messages. Otherwise if a 1000-node cluster was specified but there was no connectivity,
-            // a thousand error messages would be logged. However we would like information from Cassandra itself, so
-            // cap the error limit at 10, format the messages, and don't include the stack trace (it is displayed by the
-            // logger message above).
-            log.error(nhae.getCustomMessage(10, true, false));
-            throw new ProcessException(nhae);
-        } catch (final AuthenticationException ae) {
-            log.error("Invalid username/password combination", ae);
-            throw new ProcessException(ae);
-        }
     }
 
     @Override
@@ -417,8 +400,8 @@ public class PutCassandraQL extends AbstractCassandraProcessor {
     }
 
     @OnStopped
-    public void stop() {
-        super.stop();
+    public void stop(ProcessContext context) {
+        super.stop(context);
         statementCache.clear();
     }
 }

http://git-wip-us.apache.org/repos/asf/nifi/blob/9a1ab4c5/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/PutCassandraRecord.java
----------------------------------------------------------------------
diff --git a/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/PutCassandraRecord.java b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/PutCassandraRecord.java
index 402ec3d..84016dc 100644
--- a/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/PutCassandraRecord.java
+++ b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/PutCassandraRecord.java
@@ -19,14 +19,11 @@ package org.apache.nifi.processors.cassandra;
 import com.datastax.driver.core.BatchStatement;
 import com.datastax.driver.core.ConsistencyLevel;
 import com.datastax.driver.core.Session;
-import com.datastax.driver.core.exceptions.AuthenticationException;
-import com.datastax.driver.core.exceptions.NoHostAvailableException;
 import com.datastax.driver.core.querybuilder.Insert;
 import com.datastax.driver.core.querybuilder.QueryBuilder;
 import org.apache.nifi.annotation.behavior.InputRequirement;
 import org.apache.nifi.annotation.documentation.CapabilityDescription;
 import org.apache.nifi.annotation.documentation.Tags;
-import org.apache.nifi.annotation.lifecycle.OnScheduled;
 import org.apache.nifi.annotation.lifecycle.OnShutdown;
 import org.apache.nifi.annotation.lifecycle.OnUnscheduled;
 import org.apache.nifi.components.PropertyDescriptor;
@@ -105,8 +102,8 @@ public class PutCassandraRecord extends AbstractCassandraProcessor {
             .build();
 
     private final static List<PropertyDescriptor> propertyDescriptors = Collections.unmodifiableList(Arrays.asList(
-            CONTACT_POINTS, KEYSPACE, TABLE, CLIENT_AUTH, USERNAME, PASSWORD, RECORD_READER_FACTORY,
-            BATCH_SIZE, CONSISTENCY_LEVEL, BATCH_STATEMENT_TYPE, PROP_SSL_CONTEXT_SERVICE));
+            CONNECTION_PROVIDER_SERVICE, CONTACT_POINTS, KEYSPACE, TABLE, CLIENT_AUTH, USERNAME, PASSWORD,
+            RECORD_READER_FACTORY, BATCH_SIZE, CONSISTENCY_LEVEL, BATCH_STATEMENT_TYPE, PROP_SSL_CONTEXT_SERVICE));
 
     private final static Set<Relationship> relationships = Collections.unmodifiableSet(
             new HashSet<>(Arrays.asList(REL_SUCCESS, REL_FAILURE)));
@@ -121,20 +118,6 @@ public class PutCassandraRecord extends AbstractCassandraProcessor {
         return relationships;
     }
 
-    @OnScheduled
-    public void onScheduled(ProcessContext context) {
-        try {
-            connectToCassandra(context);
-        } catch (NoHostAvailableException nhae) {
-            getLogger().error("No host in the Cassandra cluster can be contacted successfully to execute this statement", nhae);
-            getLogger().error(nhae.getCustomMessage(10, true, false));
-            throw new ProcessException(nhae);
-        } catch (AuthenticationException ae) {
-            getLogger().error("Invalid username/password combination", ae);
-            throw new ProcessException(ae);
-        }
-    }
-
     @Override
     public void onTrigger(ProcessContext context, ProcessSession session) throws ProcessException {
         FlowFile inputFlowFile = session.get();
@@ -210,13 +193,13 @@ public class PutCassandraRecord extends AbstractCassandraProcessor {
     }
 
     @OnUnscheduled
-    public void stop() {
-        super.stop();
+    public void stop(ProcessContext context) {
+        super.stop(context);
     }
 
     @OnShutdown
-    public void shutdown() {
-        super.stop();
+    public void shutdown(ProcessContext context) {
+        super.stop(context);
     }
 
 }

http://git-wip-us.apache.org/repos/asf/nifi/blob/9a1ab4c5/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/QueryCassandra.java
----------------------------------------------------------------------
diff --git a/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/QueryCassandra.java b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/QueryCassandra.java
index 75a66f0..197e983 100644
--- a/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/QueryCassandra.java
+++ b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/QueryCassandra.java
@@ -22,7 +22,6 @@ import com.datastax.driver.core.ResultSet;
 import com.datastax.driver.core.ResultSetFuture;
 import com.datastax.driver.core.Row;
 import com.datastax.driver.core.Session;
-import com.datastax.driver.core.exceptions.AuthenticationException;
 import com.datastax.driver.core.exceptions.NoHostAvailableException;
 import com.datastax.driver.core.exceptions.QueryExecutionException;
 import com.datastax.driver.core.exceptions.QueryValidationException;
@@ -166,27 +165,15 @@ public class QueryCassandra extends AbstractCassandraProcessor {
 
     @OnScheduled
     public void onScheduled(final ProcessContext context) {
-        ComponentLog log = getLogger();
-        try {
-            connectToCassandra(context);
-            final int fetchSize = context.getProperty(FETCH_SIZE).evaluateAttributeExpressions().asInteger();
-            if (fetchSize > 0) {
-                synchronized (cluster.get()) {
-                    cluster.get().getConfiguration().getQueryOptions().setFetchSize(fetchSize);
-                }
+        super.onScheduled(context);
+
+        final int fetchSize = context.getProperty(FETCH_SIZE).evaluateAttributeExpressions().asInteger();
+        if (fetchSize > 0) {
+            synchronized (cluster.get()) {
+                cluster.get().getConfiguration().getQueryOptions().setFetchSize(fetchSize);
             }
-        } catch (final NoHostAvailableException nhae) {
-            log.error("No host in the Cassandra cluster can be contacted successfully to execute this query", nhae);
-            // Log up to 10 error messages. Otherwise if a 1000-node cluster was specified but there was no connectivity,
-            // a thousand error messages would be logged. However we would like information from Cassandra itself, so
-            // cap the error limit at 10, format the messages, and don't include the stack trace (it is displayed by the
-            // logger message above).
-            log.error(nhae.getCustomMessage(10, true, false));
-            throw new ProcessException(nhae);
-        } catch (final AuthenticationException ae) {
-            log.error("Invalid username/password combination", ae);
-            throw new ProcessException(ae);
         }
+
     }
 
     @Override
@@ -308,13 +295,13 @@ public class QueryCassandra extends AbstractCassandraProcessor {
 
 
     @OnUnscheduled
-    public void stop() {
-        super.stop();
+    public void stop(ProcessContext context) {
+        super.stop(context);
     }
 
     @OnShutdown
-    public void shutdown() {
-        super.stop();
+    public void shutdown(ProcessContext context) {
+        super.stop(context);
     }
 
     /**

http://git-wip-us.apache.org/repos/asf/nifi/blob/9a1ab4c5/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/test/java/org/apache/nifi/processors/cassandra/AbstractCassandraProcessorTest.java
----------------------------------------------------------------------
diff --git a/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/test/java/org/apache/nifi/processors/cassandra/AbstractCassandraProcessorTest.java b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/test/java/org/apache/nifi/processors/cassandra/AbstractCassandraProcessorTest.java
index aeb8f59..a2c64c7 100644
--- a/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/test/java/org/apache/nifi/processors/cassandra/AbstractCassandraProcessorTest.java
+++ b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/test/java/org/apache/nifi/processors/cassandra/AbstractCassandraProcessorTest.java
@@ -22,11 +22,15 @@ import com.datastax.driver.core.DataType;
 import com.datastax.driver.core.Metadata;
 import com.datastax.driver.core.Row;
 import com.google.common.collect.Sets;
+import org.apache.nifi.annotation.lifecycle.OnEnabled;
 import org.apache.nifi.authentication.exception.ProviderCreationException;
 import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.controller.ConfigurationContext;
 import org.apache.nifi.processor.ProcessContext;
 import org.apache.nifi.processor.ProcessSession;
 import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.reporting.InitializationException;
+import org.apache.nifi.service.CassandraSessionProvider;
 import org.apache.nifi.ssl.SSLContextService;
 import org.apache.nifi.util.TestRunner;
 import org.apache.nifi.util.TestRunners;
@@ -50,7 +54,6 @@ import static org.junit.Assert.assertTrue;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 
-
 /**
  * Unit tests for the AbstractCassandraProcessor class
  */
@@ -204,7 +207,7 @@ public class AbstractCassandraProcessorTest {
         processor.setCluster(cluster);
         testRunner.setProperty(AbstractCassandraProcessor.CONSISTENCY_LEVEL, "ONE");
         processor.connectToCassandra(testRunner.getProcessContext());
-        processor.stop();
+        processor.stop(testRunner.getProcessContext());
         assertNull(processor.getCluster());
 
         // Now do a connect where a cluster is "built"
@@ -257,6 +260,33 @@ public class AbstractCassandraProcessorTest {
         assertNotNull(processor.getCluster());
     }
 
+    @Test
+    public void testCustomValidateCassandraConnectionConfiguration() throws InitializationException {
+        MockCassandraSessionProvider sessionProviderService = new MockCassandraSessionProvider();
+
+        testRunner.addControllerService("cassandra-connection-provider", sessionProviderService);
+        testRunner.setProperty(sessionProviderService, CassandraSessionProvider.CONTACT_POINTS, "localhost:9042");
+        testRunner.setProperty(sessionProviderService, CassandraSessionProvider.KEYSPACE, "somekyespace");
+
+        testRunner.setProperty(AbstractCassandraProcessor.CONNECTION_PROVIDER_SERVICE, "cassandra-connection-provider");
+        testRunner.setProperty(AbstractCassandraProcessor.CONTACT_POINTS, "localhost:9042");
+        testRunner.setProperty(AbstractCassandraProcessor.KEYSPACE, "some-keyspace");
+        testRunner.setProperty(AbstractCassandraProcessor.CONSISTENCY_LEVEL, "ONE");
+        testRunner.setProperty(AbstractCassandraProcessor.USERNAME, "user");
+        testRunner.setProperty(AbstractCassandraProcessor.PASSWORD, "password");
+        testRunner.enableControllerService(sessionProviderService);
+
+        testRunner.assertNotValid();
+
+        testRunner.removeProperty(AbstractCassandraProcessor.CONTACT_POINTS);
+        testRunner.removeProperty(AbstractCassandraProcessor.KEYSPACE);
+        testRunner.removeProperty(AbstractCassandraProcessor.CONSISTENCY_LEVEL);
+        testRunner.removeProperty(AbstractCassandraProcessor.USERNAME);
+        testRunner.removeProperty(AbstractCassandraProcessor.PASSWORD);
+
+        testRunner.assertValid();
+    }
+
     /**
      * Provides a stubbed processor instance for testing
      */
@@ -264,7 +294,7 @@ public class AbstractCassandraProcessorTest {
 
         @Override
         protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
-            return Arrays.asList(CONTACT_POINTS, KEYSPACE, USERNAME, PASSWORD, CONSISTENCY_LEVEL, CHARSET);
+            return Arrays.asList(CONNECTION_PROVIDER_SERVICE, CONTACT_POINTS, KEYSPACE, USERNAME, PASSWORD, CONSISTENCY_LEVEL, CHARSET);
         }
 
         @Override
@@ -292,4 +322,16 @@ public class AbstractCassandraProcessorTest {
             this.cluster.set(newCluster);
         }
     }
+
+    /**
+     * Mock CassandraSessionProvider implementation for testing purpose
+     */
+    private class MockCassandraSessionProvider extends CassandraSessionProvider {
+
+        @OnEnabled
+        public void onEnabled(final ConfigurationContext context) {
+
+        }
+
+    }
 }
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/nifi/blob/9a1ab4c5/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-api-nar/pom.xml
----------------------------------------------------------------------
diff --git a/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-api-nar/pom.xml b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-api-nar/pom.xml
new file mode 100644
index 0000000..4ef4f7b
--- /dev/null
+++ b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-api-nar/pom.xml
@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>nifi-cassandra-bundle</artifactId>
+        <groupId>org.apache.nifi</groupId>
+        <version>1.9.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>nifi-cassandra-services-api-nar</artifactId>
+    <version>1.9.0-SNAPSHOT</version>
+    <packaging>nar</packaging>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-standard-services-api-nar</artifactId>
+            <version>1.9.0-SNAPSHOT</version>
+            <type>nar</type>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-cassandra-services-api</artifactId>
+            <version>1.9.0-SNAPSHOT</version>
+            <scope>compile</scope>
+        </dependency>
+    </dependencies>
+
+</project>
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/nifi/blob/9a1ab4c5/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-api-nar/src/main/resources/META-INF/LICENSE
----------------------------------------------------------------------
diff --git a/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-api-nar/src/main/resources/META-INF/LICENSE b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-api-nar/src/main/resources/META-INF/LICENSE
new file mode 100644
index 0000000..106720e
--- /dev/null
+++ b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-api-nar/src/main/resources/META-INF/LICENSE
@@ -0,0 +1,266 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
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+   Licensed under the Apache License, Version 2.0 (the "License");
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+       http://www.apache.org/licenses/LICENSE-2.0
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+APACHE NIFI SUBCOMPONENTS:
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+licenses.
+
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+For details see http://asm.ow2.org/asmdex-license.html
+
+    Copyright (c) 2012 France Télécom
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+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+    1. Redistributions of source code must retain the above copyright
+       notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+       notice, this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+    3. Neither the name of the copyright holders nor the names of its
+       contributors may be used to endorse or promote products derived from
+       this software without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+    THE POSSIBILITY OF SUCH DAMAGE.
+
+The binary distribution of this product bundles 'JNR x86asm' under an MIT
+style license.
+
+   Copyright (C) 2010 Wayne Meissner
+   Copyright (c) 2008-2009, Petr Kobalicek <kobalicek.petr@gmail.com>
+
+   Permission is hereby granted, free of charge, to any person
+   obtaining a copy of this software and associated documentation
+   files (the "Software"), to deal in the Software without
+   restriction, including without limitation the rights to use,
+   copy, modify, merge, publish, distribute, sublicense, and/or sell
+   copies of the Software, and to permit persons to whom the
+   Software is furnished to do so, subject to the following
+   conditions:
+
+   The above copyright notice and this permission notice shall be
+   included in all copies or substantial portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+   OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+   HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+   OTHER DEALINGS IN THE SOFTWARE.
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/nifi/blob/9a1ab4c5/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-api-nar/src/main/resources/META-INF/NOTICE
----------------------------------------------------------------------
diff --git a/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-api-nar/src/main/resources/META-INF/NOTICE b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-api-nar/src/main/resources/META-INF/NOTICE
new file mode 100644
index 0000000..3706faf
--- /dev/null
+++ b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-api-nar/src/main/resources/META-INF/NOTICE
@@ -0,0 +1,226 @@
+nifi-cassandra-services-api-nar
+Copyright 2016 The Apache Software Foundation
+
+This product includes software developed at
+The Apache Software Foundation (http://www.apache.org/).
+
+******************
+Apache Software License v2
+******************
+
+  (ASLv2) The Netty Project
+        The following NOTICE information applies:
+    	Copyright 2014 The Netty Project
+    	-------------------------------------------------------------------------------
+    	This product contains the extensions to Java Collections Framework which has
+    	been derived from the works by JSR-166 EG, Doug Lea, and Jason T. Greene:
+
+    	  * LICENSE:
+    	    * license/LICENSE.jsr166y.txt (Public Domain)
+    	  * HOMEPAGE:
+    	    * http://gee.cs.oswego.edu/cgi-bin/viewcvs.cgi/jsr166/
+    	    * http://viewvc.jboss.org/cgi-bin/viewvc.cgi/jbosscache/experimental/jsr166/
+
+    	This product contains a modified version of Robert Harder's Public Domain
+    	Base64 Encoder and Decoder, which can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.base64.txt (Public Domain)
+    	  * HOMEPAGE:
+    	    * http://iharder.sourceforge.net/current/java/base64/
+
+    	This product contains a modified portion of 'Webbit', an event based
+    	WebSocket and HTTP server, which can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.webbit.txt (BSD License)
+    	  * HOMEPAGE:
+    	    * https://github.com/joewalnes/webbit
+
+    	This product contains a modified portion of 'SLF4J', a simple logging
+    	facade for Java, which can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.slf4j.txt (MIT License)
+    	  * HOMEPAGE:
+    	    * http://www.slf4j.org/
+
+    	This product contains a modified portion of 'Apache Harmony', an open source
+    	Java SE, which can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.harmony.txt (Apache License 2.0)
+    	  * HOMEPAGE:
+    	    * http://archive.apache.org/dist/harmony/
+
+    	This product contains a modified portion of 'jbzip2', a Java bzip2 compression
+    	and decompression library written by Matthew J. Francis. It can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.jbzip2.txt (MIT License)
+    	  * HOMEPAGE:
+    	    * https://code.google.com/p/jbzip2/
+
+    	This product contains a modified portion of 'libdivsufsort', a C API library to construct
+    	the suffix array and the Burrows-Wheeler transformed string for any input string of
+    	a constant-size alphabet written by Yuta Mori. It can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.libdivsufsort.txt (MIT License)
+    	  * HOMEPAGE:
+    	    * https://github.com/y-256/libdivsufsort
+
+    	This product contains a modified portion of Nitsan Wakart's 'JCTools', Java Concurrency Tools for the JVM,
+    	 which can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.jctools.txt (ASL2 License)
+    	  * HOMEPAGE:
+    	    * https://github.com/JCTools/JCTools
+
+    	This product optionally depends on 'JZlib', a re-implementation of zlib in
+    	pure Java, which can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.jzlib.txt (BSD style License)
+    	  * HOMEPAGE:
+    	    * http://www.jcraft.com/jzlib/
+
+    	This product optionally depends on 'Compress-LZF', a Java library for encoding and
+    	decoding data in LZF format, written by Tatu Saloranta. It can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.compress-lzf.txt (Apache License 2.0)
+    	  * HOMEPAGE:
+    	    * https://github.com/ning/compress
+
+    	This product optionally depends on 'lz4', a LZ4 Java compression
+    	and decompression library written by Adrien Grand. It can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.lz4.txt (Apache License 2.0)
+    	  * HOMEPAGE:
+    	    * https://github.com/jpountz/lz4-java
+
+    	This product optionally depends on 'lzma-java', a LZMA Java compression
+    	and decompression library, which can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.lzma-java.txt (Apache License 2.0)
+    	  * HOMEPAGE:
+    	    * https://github.com/jponge/lzma-java
+
+    	This product contains a modified portion of 'jfastlz', a Java port of FastLZ compression
+    	and decompression library written by William Kinney. It can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.jfastlz.txt (MIT License)
+    	  * HOMEPAGE:
+    	    * https://code.google.com/p/jfastlz/
+
+    	This product contains a modified portion of and optionally depends on 'Protocol Buffers', Google's data
+    	interchange format, which can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.protobuf.txt (New BSD License)
+    	  * HOMEPAGE:
+    	    * https://github.com/google/protobuf
+
+    	This product optionally depends on 'Bouncy Castle Crypto APIs' to generate
+    	a temporary self-signed X.509 certificate when the JVM does not provide the
+    	equivalent functionality.  It can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.bouncycastle.txt (MIT License)
+    	  * HOMEPAGE:
+    	    * http://www.bouncycastle.org/
+
+    	This product optionally depends on 'Snappy', a compression library produced
+    	by Google Inc, which can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.snappy.txt (New BSD License)
+    	  * HOMEPAGE:
+    	    * https://github.com/google/snappy
+
+    	This product optionally depends on 'JBoss Marshalling', an alternative Java
+    	serialization API, which can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.jboss-marshalling.txt (GNU LGPL 2.1)
+    	  * HOMEPAGE:
+    	    * http://www.jboss.org/jbossmarshalling
+
+    	This product optionally depends on 'Caliper', Google's micro-
+    	benchmarking framework, which can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.caliper.txt (Apache License 2.0)
+    	  * HOMEPAGE:
+    	    * https://github.com/google/caliper
+
+    	This product optionally depends on 'Apache Commons Logging', a logging
+    	framework, which can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.commons-logging.txt (Apache License 2.0)
+    	  * HOMEPAGE:
+    	    * http://commons.apache.org/logging/
+
+    	This product optionally depends on 'Apache Log4J', a logging framework, which
+    	can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.log4j.txt (Apache License 2.0)
+    	  * HOMEPAGE:
+    	    * http://logging.apache.org/log4j/
+
+    	This product optionally depends on 'Aalto XML', an ultra-high performance
+    	non-blocking XML processor, which can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.aalto-xml.txt (Apache License 2.0)
+    	  * HOMEPAGE:
+    	    * http://wiki.fasterxml.com/AaltoHome
+
+    	This product contains a modified version of 'HPACK', a Java implementation of
+    	the HTTP/2 HPACK algorithm written by Twitter. It can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.hpack.txt (Apache License 2.0)
+    	  * HOMEPAGE:
+    	    * https://github.com/twitter/hpack
+
+    	This product contains a modified portion of 'Apache Commons Lang', a Java library
+    	provides utilities for the java.lang API, which can be obtained at:
+
+    	  * LICENSE:
+    	    * license/LICENSE.commons-lang.txt (Apache License 2.0)
+    	  * HOMEPAGE:
+        * https://commons.apache.org/proper/commons-lang/
+
+        This product contains a forked and modified version of Tomcat Native
+
+          * LICENSE:
+            * ASL2
+          * HOMEPAGE:
+            * http://tomcat.apache.org/native-doc/
+            * https://svn.apache.org/repos/asf/tomcat/native/
+
+  (ASLv2) Guava
+    The following NOTICE information applies:
+      Guava
+      Copyright 2015 The Guava Authors
+
+  (ASLv2) Dropwizard Metrics
+    The following NOTICE information applies:
+	Copyright (c) 2010-2013 Coda Hale, Yammer.com
+
+	************************
+    Eclipse Public License 1.0
+    ************************
+
+    The following binary components are provided under the Eclipse Public License 1.0.  See project link for details.
+
+        (EPL 2.0)(GPL 2)(LGPL 2.1) JNR Posix ( jnr.posix ) https://github.com/jnr/jnr-posix/blob/master/LICENSE.txt
+

http://git-wip-us.apache.org/repos/asf/nifi/blob/9a1ab4c5/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-api/pom.xml
----------------------------------------------------------------------
diff --git a/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-api/pom.xml b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-api/pom.xml
new file mode 100644
index 0000000..bb8b59f
--- /dev/null
+++ b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-api/pom.xml
@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>nifi-cassandra-bundle</artifactId>
+        <groupId>org.apache.nifi</groupId>
+        <version>1.9.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>nifi-cassandra-services-api</artifactId>
+    <packaging>jar</packaging>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-api</artifactId>
+            <scope>provided</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>com.datastax.cassandra</groupId>
+            <artifactId>cassandra-driver-core</artifactId>
+            <version>${cassandra.sdk.version}</version>
+        </dependency>
+    </dependencies>
+
+</project>
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/nifi/blob/9a1ab4c5/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-api/src/main/java/org/apache/nifi/cassandra/CassandraSessionProviderService.java
----------------------------------------------------------------------
diff --git a/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-api/src/main/java/org/apache/nifi/cassandra/CassandraSessionProviderService.java b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-api/src/main/java/org/apache/nifi/cassandra/CassandraSessionProviderService.java
new file mode 100644
index 0000000..fc2d222
--- /dev/null
+++ b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-api/src/main/java/org/apache/nifi/cassandra/CassandraSessionProviderService.java
@@ -0,0 +1,35 @@
+/*
+ * 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.nifi.cassandra;
+
+import com.datastax.driver.core.Cluster;
+import com.datastax.driver.core.Session;
+import org.apache.nifi.controller.ControllerService;
+
+public interface CassandraSessionProviderService extends ControllerService {
+    /**
+     * Obtains a Cassandra session instance
+     * @return {@link Session}
+     */
+    Session getCassandraSession();
+
+    /**
+     * Obtains a Cassandra cluster instance
+     * @return {@link Cluster}
+     */
+    Cluster getCluster();
+}

http://git-wip-us.apache.org/repos/asf/nifi/blob/9a1ab4c5/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-nar/pom.xml
----------------------------------------------------------------------
diff --git a/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-nar/pom.xml b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-nar/pom.xml
new file mode 100644
index 0000000..925dc92
--- /dev/null
+++ b/nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-services-nar/pom.xml
@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>nifi-cassandra-bundle</artifactId>
+        <groupId>org.apache.nifi</groupId>
+        <version>1.9.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>nifi-cassandra-services-nar</artifactId>
+    <packaging>nar</packaging>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-cassandra-services-api-nar</artifactId>
+            <version>1.9.0-SNAPSHOT</version>
+            <type>nar</type>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-cassandra-services</artifactId>
+            <version>1.9.0-SNAPSHOT</version>
+        </dependency>
+    </dependencies>
+
+</project>
\ No newline at end of file


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