/**
* Gets the value for the given key as an enum value.
*
* @param key the key to get the value for
* @param enumType the type of the enum
* @param <T> the type of the enum
* @return the value for the given key as an enum value
*/
public static <T extends Enum<T>> T getEnum(String key, Class<T> enumType) {
if (!PROPERTIES.containsKey(key)) {
throw new RuntimeException(ExceptionMessage.INVALID_CONFIGURATION_KEY.getMessage(key));
}
final String val = get(key);
return Enum.valueOf(enumType, val);
}
/**
* Gets the value for the given key in the {@link Properties}.
*
* @param key the key to get the value for
* @return the value for the given key
*/
public static String get(String key) {
if (!PROPERTIES.containsKey(key)) {
// if key is not found among the default properties
throw new RuntimeException(ExceptionMessage.INVALID_CONFIGURATION_KEY.getMessage(key));
}
String raw = PROPERTIES.getProperty(key);
return lookup(raw);
}
/**
* Gets the bytes of the value for the given key.
*
* @param key the key to get the value for
* @return the bytes of the value for the given key
*/
public static long getBytes(String key) {
if (PROPERTIES.containsKey(key)) {
String rawValue = get(key);
try {
return FormatUtils.parseSpaceSize(rawValue);
} catch (Exception ex) {
throw new RuntimeException(ExceptionMessage.KEY_NOT_BYTES.getMessage(key));
}
}
throw new RuntimeException(ExceptionMessage.INVALID_CONFIGURATION_KEY.getMessage(key));
}
/**
* Gets the value for the given key as a list.
*
* @param key the key to get the value for
* @param delimiter the delimiter to split the values
* @return the list of values for the given key
*/
public static List<String> getList(String key, String delimiter) {
Preconditions.checkArgument(
delimiter != null, "Illegal separator for Alluxio properties as " + "list");
if (PROPERTIES.containsKey(key)) {
String rawValue = PROPERTIES.getProperty(key);
return Lists.newLinkedList(
Splitter.on(delimiter).trimResults().omitEmptyStrings().split(rawValue));
}
// if key is not found among the default properties
throw new RuntimeException(ExceptionMessage.INVALID_CONFIGURATION_KEY.getMessage(key));
}
/**
* Gets the float representation of the value for the given key.
*
* @param key the key to get the value for
* @return the value for the given key as a {@code float}
*/
public static float getFloat(String key) {
if (PROPERTIES.containsKey(key)) {
String rawValue = PROPERTIES.getProperty(key);
try {
return Float.parseFloat(lookup(rawValue));
} catch (NumberFormatException e) {
LOG.warn("Configuration cannot evaluate key {} as float.", key);
}
}
// if key is not found among the default properties
throw new RuntimeException(ExceptionMessage.INVALID_CONFIGURATION_KEY.getMessage(key));
}
/**
* Gets the double representation of the value for the given key.
*
* @param key the key to get the value for
* @return the value for the given key as a {@code double}
*/
public static double getDouble(String key) {
if (PROPERTIES.containsKey(key)) {
String rawValue = PROPERTIES.getProperty(key);
try {
return Double.parseDouble(lookup(rawValue));
} catch (NumberFormatException e) {
throw new RuntimeException(ExceptionMessage.KEY_NOT_DOUBLE.getMessage(key));
}
}
// if key is not found among the default properties
throw new RuntimeException(ExceptionMessage.INVALID_CONFIGURATION_KEY.getMessage(key));
}
/**
* Gets the value for the given key as a class.
*
* @param key the key to get the value for
* @param <T> the type of the class
* @return the value for the given key as a class
*/
public static <T> Class<T> getClass(String key) {
if (PROPERTIES.containsKey(key)) {
String rawValue = PROPERTIES.getProperty(key);
try {
@SuppressWarnings("unchecked")
Class<T> clazz = (Class<T>) Class.forName(rawValue);
return clazz;
} catch (Exception e) {
LOG.error("requested class could not be loaded: {}", rawValue, e);
throw Throwables.propagate(e);
}
}
// if key is not found among the default properties
throw new RuntimeException(ExceptionMessage.INVALID_CONFIGURATION_KEY.getMessage(key));
}
/**
* Gets the boolean representation of the value for the given key.
*
* @param key the key to get the value for
* @return the value for the given key as a {@code boolean}
*/
public static boolean getBoolean(String key) {
if (PROPERTIES.containsKey(key)) {
String rawValue = PROPERTIES.getProperty(key);
String value = lookup(rawValue);
if (value.equalsIgnoreCase("true")) {
return true;
} else if (value.equalsIgnoreCase("false")) {
return false;
} else {
throw new RuntimeException(ExceptionMessage.KEY_NOT_BOOLEAN.getMessage(key));
}
}
// if key is not found among the default properties
throw new RuntimeException(ExceptionMessage.INVALID_CONFIGURATION_KEY.getMessage(key));
}