/*
* Copyright (C) 2012-2015 DataStax 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.datastax.driver.core;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Allows overriding internal settings via system properties.
* <p/>
* This is generally reserved for tests or "expert" usage.
*/
class SystemProperties {
private static final Logger logger = LoggerFactory.getLogger(SystemProperties.class);
static int getInt(String key, int defaultValue) {
String stringValue = System.getProperty(key);
if (stringValue == null) {
logger.debug("{} is undefined, using default value {}", key, defaultValue);
return defaultValue;
}
try {
int value = Integer.parseInt(stringValue);
logger.info("{} is defined, using value {}", key, value);
return value;
} catch (NumberFormatException e) {
logger.warn("{} is defined but could not parse value {}, using default value {}", key, stringValue, defaultValue);
return defaultValue;
}
}
static boolean getBoolean(String key, boolean defaultValue) {
String stringValue = System.getProperty(key);
if (stringValue == null) {
logger.debug("{} is undefined, using default value {}", key, defaultValue);
return defaultValue;
}
try {
boolean value = Boolean.parseBoolean(stringValue);
logger.info("{} is defined, using value {}", key, value);
return value;
} catch (NumberFormatException e) {
logger.warn("{} is defined but could not parse value {}, using default value {}", key, stringValue, defaultValue);
return defaultValue;
}
}
}