in common/src/main/java/org/apache/servicecomb/fence/token/SessionToken.java [43:50]
public SessionToken(String username) {
this.value = UUID.randomUUID().toString();
this.issueAt = System.currentTimeMillis();
this.username = username;
TokenDynamicProperties config = TokenDynamicPropertiesManager.getTokenConfiguration(username);
this.expiresIn = config.expiresIn;
this.notBefore = config.notBefore;
}