multithreading - Best practice for consecutive logger calls in multithreaded environment -


consider code:

if (param1 == null || param2 == null) {   logger.error("failed stuff.");   logger.debug("param1: " + param1);   logger.debug("param2: " + param2); }

it readable, in multithreaded environment logically atomic log message split 3 parts.

now, part of solution simple, , readability not suffer much:

if (param1 == null || param2 == null) {   logger.error("failed stuff.");   logger.debug(     "param1: " + param1 + system.getproperty("line.separator")      + "param2: " + param2   ); }

if changing logger output ok, can write:

if (param1 == null || param2 == null) {   string message = "failed stuff.";    if (logger.isdebugenabled()) {     message += system.getproperty("line.separator")       + "param1: " + param1 + system.getproperty("line.separator")        + "param2: " + param2;   }    logger.error(message); }

clean log, uglier code...

alternatively, write:

if (param1 == null || param2 == null) {   synchronized (logger) {     logger.error("failed stuff.");     logger.debug("param1: " + param1);     logger.debug("param2: " + param2);   } }

what recommend , why?

configure logging subsystem identify logging thread in output:

timestamp process.thread_id severity lorem ipsum dolor sit amet                   ^^^^^^^^^

now easy thread log together.


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