3 files changed, 57 insertions, 0 deletions
diff --git a/main/src/main/java/org/onap/policy/api/main/rest/ApiRestController.java b/main/src/main/java/org/onap/policy/api/main/rest/ApiRestController.java
index b44e60fa..9745ec94 100644..100755
--- a/main/src/main/java/org/onap/policy/api/main/rest/ApiRestController.java
+++ b/main/src/main/java/org/onap/policy/api/main/rest/ApiRestController.java
@@ -158,11 +158,17 @@ public class ApiRestController extends CommonRestController implements PolicyDes
             NetLoggerUtil.log(EventType.IN, CommInfrastructure.REST, "/policytypes", toJson(body));
         }
         try {
+            mutex.acquire();
             ToscaServiceTemplate serviceTemplate = toscaServiceTemplateService.createPolicyType(body);
             return makeOkResponse(requestId, serviceTemplate);
         } catch (PfModelRuntimeException pfme) {
             final var msg = "POST /policytypes";
             throw new PolicyApiRuntimeException(msg, pfme.getCause(), pfme.getErrorResponse(), requestId);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw new PolicyApiRuntimeException(e.getMessage(), null, null, requestId);
+        } finally {
+            mutex.release();
         }
     }
 
@@ -179,12 +185,18 @@ public class ApiRestController extends CommonRestController implements PolicyDes
         String versionId,
         UUID requestId) {
         try {
+            mutex.acquire();
             ToscaServiceTemplate serviceTemplate =
                 toscaServiceTemplateService.deletePolicyType(policyTypeId, versionId);
             return makeOkResponse(requestId, serviceTemplate);
         } catch (PfModelRuntimeException pfme) {
             var msg = String.format("DELETE /policytypes/%s/versions/%s", policyTypeId, versionId);
             throw new PolicyApiRuntimeException(msg, pfme.getCause(), pfme.getErrorResponse(), requestId);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw new PolicyApiRuntimeException(e.getMessage(), null, null, requestId);
+        } finally {
+            mutex.release();
         }
     }
 
@@ -310,12 +322,18 @@ public class ApiRestController extends CommonRestController implements PolicyDes
                 "/policytypes/" + policyTypeId + "/versions/" + policyTypeVersion + "/policies", toJson(body));
         }
         try {
+            mutex.acquire();
             ToscaServiceTemplate serviceTemplate =
                 toscaServiceTemplateService.createPolicy(policyTypeId, policyTypeVersion, body);
             return makeOkResponse(requestId, serviceTemplate);
         } catch (PfModelRuntimeException pfme) {
             var msg = String.format("POST /policytypes/%s/versions/%s/policies", policyTypeId, policyTypeVersion);
             throw new PolicyApiRuntimeException(msg, pfme.getCause(), pfme.getErrorResponse(), requestId);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw new PolicyApiRuntimeException(e.getMessage(), null, null, requestId);
+        } finally {
+            mutex.release();
         }
     }
 
@@ -336,6 +354,7 @@ public class ApiRestController extends CommonRestController implements PolicyDes
         String policyVersion,
         UUID requestId) {
         try {
+            mutex.acquire();
             ToscaServiceTemplate serviceTemplate =
                 toscaServiceTemplateService.deletePolicy(policyTypeId, policyTypeVersion, policyId, policyVersion);
             return makeOkResponse(requestId, serviceTemplate);
@@ -343,6 +362,11 @@ public class ApiRestController extends CommonRestController implements PolicyDes
             var msg = String.format("DELETE /policytypes/%s/versions/%s/policies/%s/versions/%s",
                 policyTypeId, policyTypeVersion, policyId, policyVersion);
             throw new PolicyApiRuntimeException(msg, pfme.getCause(), pfme.getErrorResponse(), requestId);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw new PolicyApiRuntimeException(e.getMessage(), null, null, requestId);
+        } finally {
+            mutex.release();
         }
     }
 
@@ -406,11 +430,17 @@ public class ApiRestController extends CommonRestController implements PolicyDes
             NetLoggerUtil.log(EventType.IN, CommInfrastructure.REST, "/policies", toJson(body));
         }
         try {
+            mutex.acquire();
             ToscaServiceTemplate serviceTemplate = toscaServiceTemplateService.createPolicies(body);
             return makeOkResponse(requestId, serviceTemplate);
         } catch (PfModelRuntimeException pfme) {
             final var msg = "POST /policies";
             throw new PolicyApiRuntimeException(msg, pfme.getCause(), pfme.getErrorResponse(), requestId);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw new PolicyApiRuntimeException(e.getMessage(), null, null, requestId);
+        } finally {
+            mutex.release();
         }
     }
 
@@ -427,12 +457,18 @@ public class ApiRestController extends CommonRestController implements PolicyDes
         String policyVersion,
         UUID requestId) {
         try {
+            mutex.acquire();
             ToscaServiceTemplate serviceTemplate =
                 toscaServiceTemplateService.deletePolicy(null, null, policyId, policyVersion);
             return makeOkResponse(requestId, serviceTemplate);
         } catch (PfModelRuntimeException pfme) {
             var msg = String.format("DELETE /policies/%s/versions/%s", policyId, policyVersion);
             throw new PolicyApiRuntimeException(msg, pfme.getCause(), pfme.getErrorResponse(), requestId);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw new PolicyApiRuntimeException(e.getMessage(), null, null, requestId);
+        } finally {
+            mutex.release();
         }
     }
 }
diff --git a/main/src/main/java/org/onap/policy/api/main/rest/CommonRestController.java b/main/src/main/java/org/onap/policy/api/main/rest/CommonRestController.java
index eadd8d34..d105058e 100644
--- a/main/src/main/java/org/onap/policy/api/main/rest/CommonRestController.java
+++ b/main/src/main/java/org/onap/policy/api/main/rest/CommonRestController.java
@@ -26,6 +26,7 @@ package org.onap.policy.api.main.rest;
 
 import java.util.Objects;
 import java.util.UUID;
+import java.util.concurrent.Semaphore;
 import org.onap.policy.api.main.exception.PolicyApiRuntimeException;
 import org.onap.policy.common.utils.coder.Coder;
 import org.onap.policy.common.utils.coder.CoderException;
@@ -42,6 +43,8 @@ import org.springframework.web.context.request.WebRequest;
  */
 public class CommonRestController {
 
+    protected static Semaphore mutex = new Semaphore(1);
+
     private static final Logger LOGGER = LoggerFactory.getLogger(CommonRestController.class);
 
     protected static final String EXTENSION_NAME = "interface info";
diff --git a/main/src/main/java/org/onap/policy/api/main/rest/NodeTemplateController.java b/main/src/main/java/org/onap/policy/api/main/rest/NodeTemplateController.java
index 44962663..944a6f85 100644
--- a/main/src/main/java/org/onap/policy/api/main/rest/NodeTemplateController.java
+++ b/main/src/main/java/org/onap/policy/api/main/rest/NodeTemplateController.java
@@ -63,11 +63,17 @@ public class NodeTemplateController extends CommonRestController implements Tosc
                 toJson(body));
         }
         try {
+            mutex.acquire();
             ToscaServiceTemplate nodeTemplates = toscaServiceTemplateService.createToscaNodeTemplates(body);
             return makeOkResponse(requestId, nodeTemplates);
         } catch (PfModelException | PfModelRuntimeException pfme) {
             final var msg = "POST /nodetemplates";
             throw new PolicyApiRuntimeException(msg, pfme.getCause(), pfme.getErrorResponse(), requestId);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw new PolicyApiRuntimeException(e.getMessage(), null, null, requestId);
+        } finally {
+            mutex.release();
         }
     }
 
@@ -86,11 +92,17 @@ public class NodeTemplateController extends CommonRestController implements Tosc
                 toJson(body));
         }
         try {
+            mutex.acquire();
             ToscaServiceTemplate nodeTemplates = toscaServiceTemplateService.updateToscaNodeTemplates(body);
             return makeOkResponse(requestId, nodeTemplates);
         } catch (PfModelException | PfModelRuntimeException pfme) {
             final var msg = "PUT /nodetemplates";
             throw new PolicyApiRuntimeException(msg, pfme.getCause(), pfme.getErrorResponse(), requestId);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw new PolicyApiRuntimeException(e.getMessage(), null, null, requestId);
+        } finally {
+            mutex.release();
         }
     }
 
@@ -104,11 +116,17 @@ public class NodeTemplateController extends CommonRestController implements Tosc
     @Override
     public ResponseEntity<ToscaServiceTemplate> deleteToscaNodeTemplates(String name, String version, UUID requestId) {
         try {
+            mutex.acquire();
             ToscaServiceTemplate nodeTemplates = toscaServiceTemplateService.deleteToscaNodeTemplate(name, version);
             return makeOkResponse(requestId, nodeTemplates);
         } catch (PfModelException | PfModelRuntimeException pfme) {
             final var msg = String.format("DELETE /nodetemplates/%s/versions/%s", name, version);
             throw new PolicyApiRuntimeException(msg, pfme.getCause(), pfme.getErrorResponse(), requestId);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw new PolicyApiRuntimeException(e.getMessage(), null, null, requestId);
+        } finally {
+            mutex.release();
         }
     }