public static void setLoggerImplType(String type) {
        if (loggerImplType != -1) {
            throw new IllegalStateException("TTL logger implementation type is already set! type = " + loggerImplType);
        }

        if (STDERR.equalsIgnoreCase(type)) loggerImplType = 0;
        else if (STDOUT.equalsIgnoreCase(type)) loggerImplType = 1;
        else loggerImplType = 0;
    }
Logger adaptor for ttl TTL agent/transformlet. Only use for TTL agent/transformlet!

@author Jerry Lee (oldratlee at gmail dot com)
@see com.alibaba.ttl.threadpool.agent.transformlet.TtlTransformlet
@see com.alibaba.ttl.threadpool.agent.TtlAgent
@since 3.0.0
ttl2-compatible/src/main/java/com/alibaba/ttl/threadpool/agent/logging/Logger.java