Add remove op policy option

Update the UI and backend code to be able to remove op policy for loop
instances.

Issue-ID: CLAMP-648
Change-Id: Ib3eab4977fe4f1b85e11f2373263197009bbc3e1
Signed-off-by: xuegao <xg353y@intl.att.com>

3 files changed, 48 insertions, 1 deletions

diff --git a/src/main/java/org/onap/clamp/loop/Loop.java b/src/main/java/org/onap/clamp/loop/Loop.java
index f185460c..2bf3decd 100644
--- a/src/main/java/org/onap/clamp/loop/Loop.java
+++ b/src/main/java/org/onap/clamp/loop/Loop.java
@@ -271,6 +271,17 @@ public class Loop extends AuditEntity implements Serializable {
     }
 
     /**
+     * This method removes an operational policy to the loop.
+     * It re-computes the Svg as well.
+     *
+     * @param opPolicy the operationalPolicy to add
+     */
+    public void removeOperationalPolicy(OperationalPolicy opPolicy) {
+        operationalPolicies.remove(opPolicy);
+        this.setSvgRepresentation(SvgLoopGenerator.getSvgImage(this));
+    }
+
+    /**
      * This method adds an micro service policy to the loop.
      * It re-computes the Svg as well.
      *
diff --git a/src/main/java/org/onap/clamp/loop/LoopController.java b/src/main/java/org/onap/clamp/loop/LoopController.java
index 1a67455e..1a4ae599 100644
--- a/src/main/java/org/onap/clamp/loop/LoopController.java
+++ b/src/main/java/org/onap/clamp/loop/LoopController.java
@@ -110,6 +110,18 @@ public class LoopController {
     }
 
     /**
+     * This method remove an operational policy to a loop instance.
+     *
+     * @param loopName      The loop name
+     * @param policyType    The policy model type
+     * @param policyVersion The policy model  version
+     * @return The loop modified
+     */
+    public Loop removeOperationalPolicy(String loopName, String policyType, String policyVersion) {
+        return loopService.removeOperationalPolicy(loopName, policyType, policyVersion);
+    }
+
+    /**
      * This method deletes the loop.
      *
      * @param loopName The loop Name
diff --git a/src/main/java/org/onap/clamp/loop/LoopService.java b/src/main/java/org/onap/clamp/loop/LoopService.java
index 98a2fbdd..953a5947 100644
--- a/src/main/java/org/onap/clamp/loop/LoopService.java
+++ b/src/main/java/org/onap/clamp/loop/LoopService.java
@@ -120,7 +120,31 @@ public class LoopService {
                 new OperationalPolicy(Policy.generatePolicyName("OPERATIONAL", loop.getModelService().getName(),
                         loop.getModelService().getVersion(), RandomStringUtils.randomAlphanumeric(3),
                         RandomStringUtils.randomAlphanumeric(4)), loop, null, policyModel, null, null, null));
-        return loopsRepository.save(loop);
+        return loopsRepository.saveAndFlush(loop);
+    }
+
+    /**
+     * This method remove an operational policy to a loop instance.
+     *
+     * @param loopName The loop name
+     * @param policyType The policy model type
+     * @param policyVersion The policy model  version
+     * @return The loop modified
+     */
+    Loop removeOperationalPolicy(String loopName, String policyType, String policyVersion) {
+        Loop loop = getLoop(loopName);
+        PolicyModel policyModel = policyModelsService.getPolicyModel(policyType, policyVersion);
+        if (policyModel == null) {
+            return null;
+        }
+        for (OperationalPolicy opPolicy : loop.getOperationalPolicies()) {
+            if (opPolicy.getPolicyModel().getPolicyModelType().equals(policyType) &&
+                    opPolicy.getPolicyModel().getVersion().equals(policyVersion)) {
+                loop.removeOperationalPolicy(opPolicy);
+                break;
+            }
+        }
+        return loopsRepository.saveAndFlush(loop);
     }
 
     Loop updateAndSaveOperationalPolicies(String loopName, List<OperationalPolicy> newOperationalPolicies) {