+
+ /**
+ * Validates the specified version of the operational policy provided in the payload.
+ *
+ * @param body the operational policy payload
+ *
+ * @throws PfModelException on errors parsing PfModel
+ */
+ private void validateOperationalPolicyVersion(LegacyOperationalPolicy body) throws PfModelException {
+
+ validateOperationalPolicyVersionExist(body);
+ validateNoDuplicateVersionInDb(body);
+ }
+
+ /**
+ * Validates whether the version of the operational policy is specified in the payload.
+ *
+ * @param body the operational policy payload
+ *
+ * @throws PfModelException on errors parsing PfModel
+ */
+ private void validateOperationalPolicyVersionExist(LegacyOperationalPolicy body) throws PfModelException {
+
+ if (body.getPolicyVersion() == null) {
+ String errMsg = "mandatory field 'policy-version' is missing in the policy: " + body.getPolicyId();
+ throw new PfModelException(Response.Status.NOT_ACCEPTABLE, errMsg);
+ }
+ }
+
+ /**
+ * Validates that there is no duplicate version of the operational policy which is already stored in the database.
+ *
+ * @param body the operational policy payload
+ *
+ * @throws PfModelException on errors parsing PfModel
+ */
+ private void validateNoDuplicateVersionInDb(LegacyOperationalPolicy body) throws PfModelException {
+
+ try {
+ modelsProvider.getOperationalPolicy(body.getPolicyId(), body.getPolicyVersion());
+ } catch (PfModelRuntimeException exc) {
+ if (!hasSameOperationalPolicyFound(body, exc)) {
+ return;
+ }
+ throw new PfModelException(exc.getErrorResponse().getResponseCode(), "unexpected runtime error", exc);
+ }
+
+ // There is one duplicate version stored in the DB.
+ // Try to get the latest version
+ LegacyOperationalPolicy latest = modelsProvider.getOperationalPolicy(body.getPolicyId(), null);
+ final String[] versionArray = latest.getPolicyVersion().split("\\.");
+ String errMsg = "operational policy " + body.getPolicyId() + ":" + body.getPolicyVersion()
+ + " already exists; its latest version is " + versionArray[0];
+ throw new PfModelException(Response.Status.NOT_ACCEPTABLE, errMsg);
+ }
+
+ /**
+ * Checks if the same operational policy found in the database.
+ *
+ * @param body the legacy operational policy payload
+ * @param exc the runtime exception thrown by policy model provider
+ *
+ * @return a boolean flag indicating the check result
+ */
+ private boolean hasSameOperationalPolicyFound(LegacyOperationalPolicy body, PfModelRuntimeException exc) {
+
+ if (exc.getErrorResponse().getResponseCode() == Response.Status.BAD_REQUEST
+ && exc.getErrorResponse().getErrorMessage().contains("no policy found")) {
+ LOGGER.debug("no duplicate policy {}:{} found in the DB", body.getPolicyId(), body.getPolicyVersion());
+ return false;
+ }
+ return true;
+ }