public static <T> T getGlobalProperty(String name, Class<T> clazz, T defaultValue) {
String ret = System.getProperty(name);
if (ret == null) {
return defaultValue;
} else {
return TypeUtils.stringToValue(ret, clazz);
}
}
private static void linkGlobalProperty(Class clz, Map<String, String> propertiesMap) {
for (Field f : clz.getDeclaredFields()) {
GlobalProperty at = f.getAnnotation(GlobalProperty.class);
if (at == null) {
continue;
}
if (!Modifier.isStatic(f.getModifiers())) {
throw new CloudRuntimeException(String.format("%s.%s is annotated by @GlobalProperty but it's not defined with static modifier", clz.getName(), f.getName()));
}
Object valueToSet = null;
String name = at.name();
if (Map.class.isAssignableFrom(f.getType())) {
Map ret = linkGlobalPropertyMap(name);
if (ret.isEmpty() && at.required()) {
throw new IllegalArgumentException(String.format("A required global property[%s] missing in zstack.properties", name));
}
valueToSet = ret;
} else if (List.class.isAssignableFrom(f.getType())) {
List ret = linkGlobalPropertyList(name);
if (ret.isEmpty() && at.required()) {
throw new IllegalArgumentException(String.format("A required global property[%s] missing in zstack.properties", name));
}
valueToSet = ret;
} else {
String value = getGlobalProperty(name);
if (value == null && at.defaultValue().equals(GlobalProperty.DEFAULT_NULL_STRING) && at.required()) {
throw new IllegalArgumentException(String.format("A required global property[%s] missing in zstack.properties", name));
}
if (value == null) {
value = at.defaultValue();
}
if (GlobalProperty.DEFAULT_NULL_STRING.equals(value)) {
value = null;
}
if (value != null) {
value = StringTemplate.subsititute(value, propertiesMap);
}
if (Integer.class.isAssignableFrom(f.getType()) || Integer.TYPE.isAssignableFrom(f.getType())) {
valueToSet = TypeUtils.stringToValue(value, Integer.class, 0);
} else if (Long.class.isAssignableFrom(f.getType()) || Long.TYPE.isAssignableFrom(f.getType())) {
valueToSet = TypeUtils.stringToValue(value, Long.class, 0L);
} else if (Float.class.isAssignableFrom(f.getType()) || Float.TYPE.isAssignableFrom(f.getType())) {
valueToSet = TypeUtils.stringToValue(value, Float.class, 0F);
} else if (Double.class.isAssignableFrom(f.getType()) || Double.TYPE.isAssignableFrom(f.getType())) {
valueToSet = TypeUtils.stringToValue(value, Double.class, 0D);
} else if (String.class.isAssignableFrom(f.getType())) {
valueToSet = value;
} else if (Boolean.class.isAssignableFrom(f.getType()) || Boolean.TYPE.isAssignableFrom(f.getType())) {
valueToSet = TypeUtils.stringToValue(value, Boolean.class);
} else {
throw new CloudRuntimeException(String.format("%s.%s of type[%s] is unsupported by global property. try use Platform.getGlobalProperty() and parse by yourself",
clz.getName(), f.getName(), f.getType().getName()));
}
}
f.setAccessible(true);
try {
f.set(null, valueToSet);
globalProperties.put(name, valueToSet == null ? "null" : valueToSet.toString());
logger.debug(String.format("linked global property[%s.%s], value: %s", clz.getName(), f.getName(), valueToSet));
} catch (IllegalAccessException e) {
throw new CloudRuntimeException(String.format("unable to link global property[%s.%s]", clz.getName(), f.getName()), e);
}
}
}
public static <T> T getGlobalProperty(String name, Class<T> clazz) {
String ret = System.getProperty(name);
return TypeUtils.stringToValue(ret, clazz);
}