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Initial implementation of NETCONF confirmed-commit

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This commit is contained in:
Phil Heller 2022-09-30 19:17:13 -06:00
parent 954e5d56fd
commit 284316b646
16 changed files with 1375 additions and 26 deletions
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41
apps/backend/backend_startup.c
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@ -134,6 +134,7 @@ startup_mode_startup(clicon_handle h,
{
int retval = -1;
int ret;
int db_exists;
if (strcmp(db, "running")==0){
clicon_err(OE_FATAL, 0, "Invalid startup db: %s", db);
@ -144,7 +145,45 @@ startup_mode_startup(clicon_handle h,
if (xmldb_create(h, db) < 0) /* diff */
return -1;
}
if ((ret = startup_commit(h, db, cbret)) < 0)
/* When a confirming-commit is issued, the confirmed-commit timeout
* callback is removed and then the rollback database is deleted.
*
* The presence of a rollback database means that before the rollback
* database was deleted, either clixon_backend crashed or the machine
* rebooted.
*/
yang_stmt *yspec = clicon_dbspec_yang(h);
if (if_feature(yspec, "ietf-netconf", "configmed-commit")) {
db_exists = xmldb_exists(h, "rollback");
if (db_exists < 0) {
clicon_err(OE_DAEMON, 0, "Error checking for the existence of the rollback database");
goto done;
} else if (db_exists == 1) {
ret = startup_commit(h, "rollback", cbret);
switch(ret) {
case -1:
case 0:
/* validation failed, cbret set */
if ((ret = startup_commit(h, "failsafe", cbret)) < 0)
goto fail;
/* Rename the errored rollback database so that it is not tried on a subsequent startup */
xmldb_rename(h, db, NULL, ".error");
retval = 1;
goto done;
case 1:
/* validation ok */
retval = 1;
xmldb_delete(h, "rollback");
goto done;
default:
/* Unexpected response */
goto fail;
}
}
} else if ((ret = startup_commit(h, db, cbret)) < 0)
goto done;
if (ret == 0)
goto fail;