Create code infrastructure for policy forwarding

Added sending of polices from the policy forwarder to the xacml PDP and
added handling of parameters for configuring the policy forwarders

Issue-ID: POLICY-926
Change-Id: I26effe70769f7edc765470a1a9ad40ed9faad82d
Signed-off-by: mmis <michael.morris@ericsson.com>

2 files changed, 29 insertions, 1 deletions

diff --git a/forwarding/src/main/java/org/onap/policy/distribution/forwarding/PolicyForwarder.java b/forwarding/src/main/java/org/onap/policy/distribution/forwarding/PolicyForwarder.java
index 5272fc9b..5bd53804 100644
--- a/forwarding/src/main/java/org/onap/policy/distribution/forwarding/PolicyForwarder.java
+++ b/forwarding/src/main/java/org/onap/policy/distribution/forwarding/PolicyForwarder.java
@@ -25,10 +25,25 @@ import org.onap.policy.distribution.model.Policy;
 
 /**
  * Forwards polices.
+ * <p>
+ * To create a policy forwarder a class implementing this interface must be created, along with a
+ * concrete sub class of PolicyForwarderConfigurationParameterGroup to handle configuration
+ * parameters for the policy forwarder.
  */
 public interface PolicyForwarder {
 
     /**
+     * Configure the policy forwarder.
+     * <p>
+     * This method will be invoked immediately after instantiation in order for the policy forwarder
+     * to configure itself.
+     * 
+     * @param parameterGroupName the name of the parameter group which contains the configuration
+     *        for the policy forwarder
+     */
+    void configure(String parameterGroupName);
+
+    /**
      * Forward the given policies.
      * 
      * @param policies the policies to forward
diff --git a/forwarding/src/main/java/org/onap/policy/distribution/forwarding/parameters/PolicyForwarderParameters.java b/forwarding/src/main/java/org/onap/policy/distribution/forwarding/parameters/PolicyForwarderParameters.java
index 28a1b1be..2426cccd 100644
--- a/forwarding/src/main/java/org/onap/policy/distribution/forwarding/parameters/PolicyForwarderParameters.java
+++ b/forwarding/src/main/java/org/onap/policy/distribution/forwarding/parameters/PolicyForwarderParameters.java
@@ -37,16 +37,20 @@ public class PolicyForwarderParameters implements ParameterGroup {
 
     private String forwarderType;
     private String forwarderClassName;
+    private String forwarderConfigurationName;
 
     /**
      * Constructor for instantiating PolicyForwarderParameters.
      *
      * @param forwarderType the policy forwarder type
      * @param forwarderClassName the policy forwarder class name
+     * @param forwarderConfigurationName the name of the configuration for the policy forwarder
      */
-    public PolicyForwarderParameters(final String forwarderType, final String forwarderClassName) {
+    public PolicyForwarderParameters(final String forwarderType, final String forwarderClassName,
+            final String forwarderConfigurationName) {
         this.forwarderType = forwarderType;
         this.forwarderClassName = forwarderClassName;
+        this.forwarderConfigurationName = forwarderConfigurationName;
     }
 
     /**
@@ -68,6 +72,15 @@ public class PolicyForwarderParameters implements ParameterGroup {
     }
 
     /**
+     * Return the name of the forwarder configuration of this PolicyForwarderParameters instance.
+     *
+     * @return the the name of the forwarder configuration
+     */
+    public String getForwarderConfigurationName() {
+        return forwarderConfigurationName;
+    }
+
+    /**
      * {@inheritDoc}
      */
     @Override