diff options
Diffstat (limited to 'eelf-logger/eelf-logger-logback-impl/src/main/java/org/onap/dcae/utils/eelf/logger/logback/resolver/CompositePropertyResolver.java')
-rw-r--r-- | eelf-logger/eelf-logger-logback-impl/src/main/java/org/onap/dcae/utils/eelf/logger/logback/resolver/CompositePropertyResolver.java | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/eelf-logger/eelf-logger-logback-impl/src/main/java/org/onap/dcae/utils/eelf/logger/logback/resolver/CompositePropertyResolver.java b/eelf-logger/eelf-logger-logback-impl/src/main/java/org/onap/dcae/utils/eelf/logger/logback/resolver/CompositePropertyResolver.java new file mode 100644 index 0000000..e5f1bc1 --- /dev/null +++ b/eelf-logger/eelf-logger-logback-impl/src/main/java/org/onap/dcae/utils/eelf/logger/logback/resolver/CompositePropertyResolver.java @@ -0,0 +1,53 @@ +/* + * ================================================================================ + * 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.dcae.utils.eelf.logger.logback.resolver; + +import java.util.Arrays; +import java.util.List; + +/** + * A composite property resolver can look under different resolvers in order of given property resolvers + * + * @author Rajiv Singla + */ +public class CompositePropertyResolver implements PropertyResolver { + + private static final long serialVersionUID = 1L; + + private final List<PropertyResolver> propertyResolvers; + + public CompositePropertyResolver(PropertyResolver... propertyResolvers) { + this.propertyResolvers = Arrays.asList(propertyResolvers); + } + + @Override + public String resolve(final List<String> propertyNames) { + // resolver property in given resolvers in the same order they are defined + for (PropertyResolver propertyResolver : propertyResolvers) { + final String propertyValue = propertyResolver.resolve(propertyNames); + if (propertyValue != null) { + return propertyValue; + } + } + + return null; + } + +} |