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Update csn format. Format now more inconsistent from the inconsistent

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LDUP specifications.  Once LDUP agrees on the format (let's hope they
choose GSER), this will need to be updated.
This commit is contained in:
Kurt Zeilenga 2003-11-18 22:10:12 +00:00
parent f6db6d336f
commit 72cfae7264
1 changed files with 11 additions and 8 deletions
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19
libraries/liblutil/csn.c
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@ -13,16 +13,18 @@
/*
* This file contains routines to generate a change sequence number. Every
* add delete, and modification is given a unique identifier for use in
* add, delete, and modification is given a unique identifier for use in
* resolving conflicts during replication operations.
*
* These routines are based upon draft-ietf-ldup-model-03.txt, and will
* need to be revisited once standardized.
* These routines are (loosly) based upon draft-ietf-ldup-model-03.txt,
* A WORK IN PROGRESS. The format will likely change.
*
* The format of a CSN string is: yyyymmddhh:mm:ssz#0xSSSS#d#0xssss
* where SSSS is a counter of operations within a timeslice, d is an
* offset into a list of replica records, and ssss is a counter of
* modifications within this operation.
* The format of a CSN string is: yyyymmddhhmmssz#s#r#c
* where s is a counter of operations within a timeslice, r is
* the replica id (normally zero), and c is a counter of
* modifications within this operation. s, r, and c are
* represented in hex and zero padded to lengths of 6, 2, and
* 6, respectively.
*
* Calls to this routine MUST be serialized with other calls
* to gmtime().
@ -53,7 +55,8 @@ lutil_csnstr(char *buf, size_t len, unsigned int replica, unsigned int mod)
op = ++csnop;
ltm = gmtime( &t );
n = snprintf( buf, len, "%4d%02d%02d%02d:%02d:%02dZ#0x%04x#%d#%04x",
n = snprintf( buf, len,
"%4d%02d%02d%02d%02d%02dZ#%06x#%02x#%06x",
ltm->tm_year + 1900, ltm->tm_mon + 1, ltm->tm_mday, ltm->tm_hour,
ltm->tm_min, ltm->tm_sec, op, replica, mod );