ComponentPropertyReader.java

/*
 * Copyright 2016 ANI Technologies Pvt. Ltd.
 *
 * 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.olacabs.fabric.compute.util;

import com.olacabs.fabric.common.util.PropertyReader;
import com.olacabs.fabric.model.common.ComponentMetadata;

import java.util.Properties;

/**
 * TODO doc.
 */
public final class ComponentPropertyReader {

    private ComponentPropertyReader() {

    }

    public static String readString(Properties properties, Properties global,
                                    final String propertyName, String instanceId, ComponentMetadata componentMetadata) {
        return readString(properties, global, propertyName, instanceId, componentMetadata, null);
    }

    public static String readString(Properties properties, Properties global,
                                    final String propertyName, String instanceId,
                                    ComponentMetadata componentMetadata, String defaultValue) {
        final String key = generateKey(propertyName, instanceId, componentMetadata);
        return PropertyReader.readString(properties, global, key, defaultValue);
    }

    public static Integer readInteger(Properties properties, Properties global, final String propertyName,
            String instanceId, ComponentMetadata componentMetadata) {
        return readInteger(properties, global, propertyName, instanceId, componentMetadata, null);
    }

    public static Integer readInteger(Properties properties, Properties global,
                                      final String propertyName, String instanceId,
                                      ComponentMetadata componentMetadata, Integer defaultValue) {
        final String key = generateKey(propertyName, instanceId, componentMetadata);
        return PropertyReader.readInt(properties, global, key, defaultValue);
    }

    public static Long readLong(Properties properties, Properties global,
                                final String propertyName, String instanceId, ComponentMetadata componentMetadata) {
        return readLong(properties, global, propertyName, instanceId, componentMetadata, null);
    }

    public static Long readLong(Properties properties, Properties global,
                                final String propertyName, String instanceId,
                                ComponentMetadata componentMetadata, Long defaultValue) {
        final String key = generateKey(propertyName, instanceId, componentMetadata);
        return PropertyReader.readLong(properties, global, key, defaultValue);
    }

    public static Boolean readBoolean(Properties properties, Properties global, final String propertyName,
            String instanceId, ComponentMetadata componentMetadata) {
        return readBoolean(properties, global, propertyName, instanceId, componentMetadata, null);
    }

    public static Boolean readBoolean(Properties properties, Properties global,
                                      final String propertyName, String instanceId,
                                      ComponentMetadata componentMetadata, Boolean defaultValue) {
        final String key = generateKey(propertyName, instanceId, componentMetadata);
        return PropertyReader.readBoolean(properties, global, key, defaultValue);
    }

    private static String generateKey(String propertyName, String instanceId, ComponentMetadata componentMetadata) {
        return String.format("%s.%s.%s",
            componentMetadata.getType().name().toLowerCase(),
            instanceId,
            propertyName);
    }
}