diff options
Diffstat (limited to 'feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/FeatureEnabledChecker.java')
-rw-r--r-- | feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/FeatureEnabledChecker.java | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/FeatureEnabledChecker.java b/feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/FeatureEnabledChecker.java deleted file mode 100644 index d2f32043..00000000 --- a/feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/FeatureEnabledChecker.java +++ /dev/null @@ -1,144 +0,0 @@ -/* - * ============LICENSE_START======================================================= - * ONAP - * ================================================================================ - * Copyright (C) 2018 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.onap.policy.drools.pooling; - -// TODO move to policy-utils - -import java.lang.annotation.Annotation; -import java.lang.reflect.Field; -import java.util.Properties; -import org.onap.policy.common.utils.properties.SpecPropertyConfiguration; -import org.onap.policy.common.utils.properties.exception.PropertyException; - -/** - * Checks whether or not a feature is enabled. The name of the "enable" property - * is assumed to be of the form accepted by a {@link SpecPropertyConfiguration}, - * which contains a substitution place-holder into which a "specializer" (e.g., - * controller or session name) is substituted. - */ -public class FeatureEnabledChecker { - - /** - * - */ - private FeatureEnabledChecker() { - super(); - } - - /** - * Determines if a feature is enabled for a particular specializer. - * - * @param props properties from which to extract the "enabled" flag - * @param specializer specializer to be substituted into the property name - * when extracting - * @param propName the name of the "enabled" property - * @return {@code true} if the feature is enabled, or {@code false} if it is - * not enabled (or if the property doesn't exist) - * @throws IllegalArgumentException if the "enabled" property is not a - * boolean value - */ - public static boolean isFeatureEnabled(Properties props, String specializer, String propName) { - - try { - return new Config(specializer, props, propName).isEnabled(); - - } catch (PropertyException e) { - throw new IllegalArgumentException("cannot check property " + propName, e); - } - } - - - /** - * Configuration used to extract the value. - */ - private static class Config extends SpecPropertyConfiguration { - - /** - * There is a bit of trickery here. This annotation is just a - * place-holder to get the superclass to invoke the - * {@link #setValue(java.lang.reflect.Field, Properties, Property) - * setValue()} method. When that's invoked, we'll substitute - * {@link #propOverride} instead of this annotation. - */ - @Property(name = "feature-enabled-property-place-holder") - private boolean enabled; - - /** - * Annotation that will actually be used to set the field. - */ - private Property propOverride; - - /** - * - * @param specializer specializer to be substituted into the property - * name when extracting - * @param props properties from which to extract the "enabled" flag - * @param propName the name of the "enabled" property - * @throws PropertyException if an error occurs - */ - public Config(String specializer, Properties props, String propName) throws PropertyException { - super(specializer); - - propOverride = new Property() { - - @Override - public String name() { - return propName; - } - - @Override - public String defaultValue() { - // feature is disabled by default - return "false"; - } - - @Override - public String accept() { - return ""; - } - - @Override - public Class<? extends Annotation> annotationType() { - return Property.class; - } - }; - - setAllFields(props); - } - - /** - * Substitutes {@link #propOverride} for "prop". - */ - @Override - protected boolean setValue(Field field, Properties props, Property prop) throws PropertyException { - return super.setValue(field, props, propOverride); - } - - /** - * - * @return {@code true} if the feature is enabled, {@code false} - * otherwise - */ - public boolean isEnabled() { - return enabled; - } - }; -} |