io.polaris.core.log.Slf4jStack Maven / Gradle / Ivy
package io.polaris.core.log;
import org.slf4j.MDC;
/**
* @author Qt
* @since Aug 04, 2023
*/
class Slf4jStack implements IStack {
public static final String DELIMITER = "|";
public static final String STACK_KEY = "MSG";
@Override
public void put(String key, String val) {
MDC.put(key, val);
}
@Override
public String get(String key) {
return MDC.get(key);
}
@Override
public void remove(String key) {
MDC.remove(key);
}
@Override
public void clear() {
MDC.clear();
}
@Override
public void push(String msg) {
String old = MDC.get(STACK_KEY);
if (old == null || old.trim().length() == 0) {
MDC.put(STACK_KEY, msg);
} else {
if (!old.contains(msg)) {
MDC.put(STACK_KEY, old + DELIMITER + msg);
}
}
}
@Override
public String pop() {
String old = MDC.get(STACK_KEY);
if (old == null || old.trim().length() == 0) {
return "";
}
old = old.trim();
int i = old.lastIndexOf(DELIMITER);
if (i >= 0) {
String pop = old.substring(i + 1).trim();
String msg = old.substring(0, i).trim();
if (msg == null || msg.trim().length() == 0) {
MDC.remove(STACK_KEY);
} else {
MDC.put(STACK_KEY, msg);
}
return pop;
}
MDC.remove(STACK_KEY);
return old;
}
@Override
public String peek() {
String old = MDC.get(STACK_KEY);
if (old == null || old.trim().length() == 0) {
return "";
}
old = old.trim();
int i = old.lastIndexOf(DELIMITER);
if (i >= 0) {
String pop = old.substring(i + 1).trim();
return pop;
}
return old;
}
}