--- /dev/null
+/*-
+ * ============LICENSE_START=======================================================
+ * ECOMP Policy Engine
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.policy.controlloop.guard.compiler;
+
+
+import java.io.InputStream;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import org.openecomp.policy.controlloop.compiler.CompilerException;
+import org.openecomp.policy.controlloop.compiler.ControlLoopCompilerCallback;
+import org.openecomp.policy.controlloop.policy.guard.Constraint;
+import org.openecomp.policy.controlloop.policy.guard.ControlLoopGuard;
+import org.openecomp.policy.controlloop.policy.guard.GuardPolicy;
+import org.yaml.snakeyaml.Yaml;
+import org.yaml.snakeyaml.constructor.Constructor;
+
+public class ControlLoopGuardCompiler {
+
+ public static ControlLoopGuard compile(ControlLoopGuard CLGuard, ControlLoopCompilerCallback callback) throws CompilerException {
+ //
+ // Ensure ControlLoopGuard has at least one guard policies
+ //
+ validateControlLoopGuard(CLGuard, callback);
+ //
+ // Ensure each guard policy has at least one constraints and all guard policies are unique
+ //
+ validateGuardPolicies(CLGuard.guards, callback);
+ //
+ // Ensure constraints for each guard policy are unique
+ //
+ validateConstraints(CLGuard.guards, callback);
+
+ return CLGuard;
+ }
+
+ public static ControlLoopGuard compile(InputStream yamlSpecification, ControlLoopCompilerCallback callback) throws CompilerException {
+ Yaml yaml = new Yaml(new Constructor(ControlLoopGuard.class));
+ Object obj = yaml.load(yamlSpecification);
+ if (obj == null) {
+ throw new CompilerException("Could not parse yaml specification.");
+ }
+ if (! (obj instanceof ControlLoopGuard)) {
+ throw new CompilerException("Yaml could not parse specification into required ControlLoopGuard object");
+ }
+ return ControlLoopGuardCompiler.compile((ControlLoopGuard) obj, callback);
+ }
+
+ private static void validateControlLoopGuard(ControlLoopGuard CLGuard, ControlLoopCompilerCallback callback) throws CompilerException {
+ if (CLGuard == null) {
+ if (callback != null) {
+ callback.onError("ControlLoop Guard cannot be null");
+ }
+ throw new CompilerException("ControlLoop Guard cannot be null");
+ }
+ if (CLGuard.guard == null) {
+ if (callback != null) {
+ callback.onError("Guard version cannot be null");
+ }
+ }
+ if (CLGuard.guards == null) {
+ if (callback != null) {
+ callback.onError("ControlLoop Guard should have at least one guard policies");
+ }
+ } else if (CLGuard.guards.size() < 1) {
+ if (callback != null) {
+ callback.onError("ControlLoop Guard should have at least one guard policies");
+ }
+ }
+ }
+
+ private static void validateGuardPolicies(List<GuardPolicy> policies, ControlLoopCompilerCallback callback) throws CompilerException {
+ if (policies == null) {
+ if (callback != null) {
+ callback.onError("Guard policies should not be null");
+ }
+ throw new CompilerException("Guard policies should not be null");
+ }
+ //
+ // Ensure all guard policies are unique
+ //
+ Set<GuardPolicy> newSet = new HashSet<GuardPolicy>(policies);
+ if (newSet.size() != policies.size()) {
+ if (callback != null) {
+ callback.onWarning("There are duplicate guard policies");
+ }
+ }
+ //
+ // Ensure each guard policy has at least one constraints
+ //
+ for (GuardPolicy policy : policies) {
+ if (policy.limit_constraints == null || policy.limit_constraints.size() < 1) {
+ if (callback != null) {
+ callback.onError("Guard policy " + policy.name + " does not have any limit constraint");
+ }
+ throw new CompilerException("Guard policy " + policy.name + " does not have any limit constraint");
+ }
+ }
+ }
+
+ private static void validateConstraints(List<GuardPolicy> policies, ControlLoopCompilerCallback callback) throws CompilerException {
+ if (policies == null) {
+ if (callback != null) {
+ callback.onError("Guard policies should not be null");
+ }
+ throw new CompilerException("Guard policies should not be null");
+ }
+ for (GuardPolicy policy : policies) {
+ Set<Constraint> newSet = new HashSet<Constraint>(policy.limit_constraints);
+ if (newSet.size() != policy.limit_constraints.size()) {
+ if (callback != null) {
+ callback.onWarning("Guard policy " + policy.name + " has duplicate limit constraints");
+ }
+ }
+ }
+ }
+
+}
Code Review / policy / engine.git / blobdiff