[jira] [Created] (TS-3974) Improvements to debug log

["David Carlin (JIRA)" <ji...@apache.org>]

David Carlin created TS-3974:
--------------------------------

             Summary: Improvements to debug log
                 Key: TS-3974
                 URL: https://issues.apache.org/jira/browse/TS-3974
             Project: Traffic Server
          Issue Type: Bug
          Components: Logging
            Reporter: David Carlin


A couple suggestions to improve the readability of the debug logs.

# Can the transaction ID be put on every debug log entry, similar to how the thread ID is on every debug log entry?  Then you could grep for a particular transaction ID and only see those messages.
# Can we get a squid.log field for transaction ID?  Then you can go looking for it in debug log.
# Some messages currently have transaction ID inside of square braces, but square braces are used elsewhere.  For example:
\\
{noformat}[Oct 19 15:56:16.140] Server {0x2b3dbf130700} DEBUG: (http) [147596] State Transition: SM_ACTION_ORIGIN_SERVER_OPEN -> SM_ACTION_SERVER_READ{noformat}
In the above example 147596 is transaction ID.  But look at this:
\\
{noformat}[Oct 19 10:29:10.273] Server {0x7ff0c9de08c0} DEBUG: <HttpClientSession.cc:498 (release)> (http_cs) [2] session released by sm [1]{noformat}
Square braces notation also used for HTTP2 client session and state machine.  So please pick something unique for transaction ID.
# Is it necessary for this http header debug messages to be split across so many lines?  At a minimum can the header name and header value be on the same line?  Its hard to read debug log output when there are many clients making requests at same time. 
{noformat}
[Oct 19 20:18:44.744] Server {0x2b871b635700} DEBUG: (http)
[Oct 19 20:18:44.744] Server {0x2b871b635700} DEBUG: (http) 	SLOT # 4 (0x2b8818421188), LIVE
[Oct 19 20:18:44.744] Server {0x2b871b635700} DEBUG: (http) [N: "Accept-Language", N_LEN: 15, N_IDX: 2,
[Oct 19 20:18:44.744] Server {0x2b871b635700} DEBUG: (http) V: "en-ca", V_LEN: 5,
[Oct 19 20:18:44.745] Server {0x2b871b635700} DEBUG: (http) NEXTDUP: (nil), RAW: 1, RAWLEN: 24, F: 1]
[Oct 19 20:18:44.745] Server {0x2b871b635700} DEBUG: (http)
{noformat}



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