in library/src/main/java/com/alibaba/dcm/agent/DcmAgent.java [262:286]
private static synchronized void initAction2Method() throws NoSuchMethodException {
if (action2Method != null) return;
Map<String, Method> map = new LinkedHashMap<>();
map.put("set", DnsCacheManipulator.class.getMethod("setDnsCache", String.class, String[].class));
map.put("get", DnsCacheManipulator.class.getMethod("getDnsCache", String.class));
map.put("rm", DnsCacheManipulator.class.getMethod("removeDnsCache", String.class));
map.put("list", DnsCacheManipulator.class.getMethod("getWholeDnsCache"));
map.put("ls", DnsCacheManipulator.class.getMethod("getWholeDnsCache"));
map.put("clear", DnsCacheManipulator.class.getMethod("clearDnsCache"));
map.put("load", DnsCacheManipulator.class.getMethod("loadDnsCacheConfigFromFileSystem", String.class));
map.put("setPolicy", DnsCacheManipulator.class.getMethod("setDnsCachePolicy", int.class));
map.put("getPolicy", DnsCacheManipulator.class.getMethod("getDnsCachePolicy"));
map.put("setNegativePolicy", DnsCacheManipulator.class.getMethod("setDnsNegativeCachePolicy", int.class));
map.put("getNegativePolicy", DnsCacheManipulator.class.getMethod("getDnsNegativeCachePolicy"));
actionList = new ArrayList<>(map.keySet());
map.put(FILE_KEY, null); // FAKE KEY
action2Method = map;
}