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MDW is a microservices based workflow framework

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/*
 * Copyright (C) 2018 CenturyLink, Inc.
 *
 * 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.
 */
package com.centurylink.mdw.monitor;

import com.centurylink.mdw.constant.WorkAttributeConstant;
import com.centurylink.mdw.model.workflow.RuntimeContext;

public interface Monitor {

    default boolean isOffline() {
        return this instanceof OfflineMonitor;
    }

    default boolean isEnabled(RuntimeContext context) {
        com.centurylink.mdw.annotations.Monitor annotation =
                getClass().getAnnotation(com.centurylink.mdw.annotations.Monitor.class);
        if (annotation == null) {
            return true; // old-style global
        }
        else {
            String attr = context.getAttribute(WorkAttributeConstant.MONITORS);
            if (attr == null) {
                // not explicity specified in attribute
                return annotation.defaultEnabled();
            }
            else {
                return new MonitorAttributes(attr).isEnabled(this.getClass().getName());
            }
        }
    }
}