# ConfigurationBuilderUtil.java

    /*
     *  Copyright (c) 2022, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
     *
     *  WSO2 Inc. licenses this file to you 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 org.apache.synapse.transport.util;

    import org.apache.commons.logging.Log;
    import org.apache.commons.logging.LogFactory;

    import java.util.Properties;

    public class ConfigurationBuilderUtil {

        private static final Log LOGGER = LogFactory.getLog(ConfigurationBuilderUtil.class);

        /**
         * Get an int property that tunes pass-through http transport. Prefer system properties
         *
         * @param name name of the system/config property
         * @param def  default value to return if the property is not set
         * @return the value of the property to be used
         */
        public static Integer getIntProperty(String name, Integer def, Properties props) {
            String val = System.getProperty(name);
            if (val == null) {
                val = props.getProperty(name);
            }

            if (val != null) {
                int intVal;
                try {
                    intVal = Integer.valueOf(val);
                } catch (NumberFormatException e) {
                    LOGGER.warn("Invalid pass-through http tuning property value. " + name +
                            " must be an integer");
                    return def;
                }
                if (LOGGER.isDebugEnabled()) {
                    LOGGER.debug("Using pass-through http tuning parameter : " + name + " = " + val);
                }
                return intVal;
            }

            return def;
        }

        /**
         * Return true if user has configured an int property that tunes pass-through http transport.
         *
         * @param name  name of the system/config property
         * @return      true if property is configured
         */
        public static boolean isIntPropertyConfigured(String name, Properties props) {

            String val = System.getProperty(name);
            if (val == null) {
                val = props.getProperty(name);
            }

            if (val != null) {
                try {
                    Integer.parseInt(val);
                } catch (NumberFormatException e) {
                    LOGGER.warn("Incorrect pass-through http tuning property value. " + name +
                            " must be an integer");
                    return false;
                }
                if (LOGGER.isDebugEnabled()) {
                    LOGGER.debug("Using configured pass-through http tuning property value for : " + name);
                }
                return true;
            }

            return false;
        }

        /**
         * Get an int property that tunes pass-through http transport. Prefer system properties
         *
         * @param name name of the system/config property
         * @return the value of the property, null if the property is not found
         */
        public static Integer getIntProperty(String name, Properties props) {
            return getIntProperty(name, null, props);
        }

        public static Long getLongProperty(String name, Long def, Properties props) {
            String val = System.getProperty(name);
            if (val == null) {
                val = props.getProperty(name);
            }

            if (val != null) {
                long longVal;
                try {
                    longVal = Long.valueOf(val);
                } catch (NumberFormatException e) {
                    LOGGER.warn("Invalid pass-through http tuning property value. " + name +
                            " must be an integer");
                    return def;
                }
                if (LOGGER.isDebugEnabled()) {
                    LOGGER.debug("Using pass-through http tuning parameter : " + name + " = " + val);
                }
                return longVal;
            }

            return def;
        }

        /**
         * Get a boolean property that tunes pass-through http transport. Prefer system properties
         *
         * @param name name of the system/config property
         * @param def  default value to return if the property is not set
         * @return the value of the property to be used
         */
        public static Boolean getBooleanProperty(String name, Boolean def, Properties props) {
            String val = System.getProperty(name);
            if (val == null) {
                val = props.getProperty(name);
            }

            if (val != null) {
                if (LOGGER.isDebugEnabled()) {
                    LOGGER.debug("Using pass-through http tuning parameter : " + name + " = " + val);
                }
                return Boolean.valueOf(val);
            }

            return def;
        }

        /**
         * Get a Boolean property that tunes pass-through http transport. Prefer system properties
         *
         * @param name name of the system/config property
         * @return the value of the property, null if the property is not found
         */
        public static Boolean getBooleanProperty(String name, Properties props) {
            return getBooleanProperty(name, null, props);
        }

        /**
         * Get a String property that tunes pass-through http transport. Prefer system properties
         *
         * @param name name of the system/config property
         * @param def  default value to return if the property is not set
         * @return the value of the property to be used
         */
        public static String getStringProperty(String name, String def, Properties props) {
            String val = System.getProperty(name);
            if (val == null) {
                val = props.getProperty(name);
            }

            return val == null ? def : val;
        }

    }