Commit 24938e57 authored by Mike Hibler's avatar Mike Hibler
Browse files

Oft-desired (by me anyway) hack to print out most recent log entry in

the hwdown experiment listing.  Just a simple hack I though.  Ye Gads!
That was painful.  On the plus side, I now know the different between all
those SQL join types :-)

Anyway, added a showlastlog variable in the SHOWNODES function.  Currently,
it only gets set if the pid/eid is emulab-ops/hwdown.  Eventually it could
be a parameter so it could be selected for any experiment.
parent 13f27e97
......@@ -1022,6 +1022,51 @@ function SHOWNODES($pid, $eid, $sortby) {
$sortclause = "n.type,n.priority";
if ($pid == "emulab-ops" && $eid == "hwdown") {
$showlastlog = 1;
else {
$showlastlog = 0;
if ($showlastlog) {
# We need to extract, for each node, just the latest nodelog message.
# I could not figure out how to do this in a single select so instead
# create a temporary table of node_id and latest log message date
# for all reserved nodes to re-join with nodelog to extract the latest
# log message.
DBQueryFatal("CREATE TEMPORARY TABLE nodelogtemp ".
"SELECT r.node_id, MAX(reported) AS reported ".
"FROM reserved AS r ".
"LEFT JOIN nodelog AS l ON r.node_id=l.node_id ".
"WHERE r.eid='$eid' and'$pid' ".
"GROUP BY r.node_id");
# Now join this table and nodelog with the standard set of tables
# to get all the info we need. Note the inner join with the temp
# table, this is faster and still safe since it has an entry for
# every reserved node.
$query_result =
DBQueryFatal("SELECT r.*,n.*,nt.isvirtnode, ".
" ns.status as nodestatus, ".
" date_format(rsrv_time,\"%Y-%m-%d %T\") as rsrvtime, ".
"nl.reported,nl.entry ".
"from reserved as r ".
"left join nodes as n on n.node_id=r.node_id ".
"left join node_types as nt on nt.type=n.type ".
"left join node_status as ns on ns.node_id=r.node_id ".
"inner join nodelogtemp as t on t.node_id=r.node_id ".
"left join nodelog as nl on nl.node_id=r.node_id and nl.reported=t.reported ".
"WHERE r.eid='$eid' and'$pid' ".
"ORDER BY $sortclause");
DBQueryFatal("DROP table nodelogtemp");
else {
$query_result =
DBQueryFatal("SELECT r.*,n.*,nt.isvirtnode, ".
" ns.status as nodestatus, ".
......@@ -1032,6 +1077,7 @@ function SHOWNODES($pid, $eid, $sortby) {
"left join node_status as ns on ns.node_id=r.node_id ".
"WHERE r.eid='$eid' and'$pid' ".
"ORDER BY $sortclause");
if (mysql_num_rows($query_result)) {
echo "<center>
......@@ -1055,8 +1101,12 @@ function SHOWNODES($pid, $eid, $sortby) {
<th>Default OSID</th>
<th><a href=\"docwrapper.php3?docname=ssh-mime.html\">SSH</a>
if ($showlastlog) {
echo " <th>Last Log<br>Time</th>
<th>Last Log Message</th>\n";
echo " <th><a href=\"docwrapper.php3?docname=ssh-mime.html\">SSH</a>
<th><a href=\"faq.php3#UTT-TUNNEL\">Console</a></th>
......@@ -1115,6 +1165,11 @@ function SHOWNODES($pid, $eid, $sortby) {
echo " <td>$idlestr</td>
<td align=center>$startstatus</td>\n";
if ($showlastlog) {
echo " <td>$row[reported]</td>\n";
echo " <td>$row[entry] (<a href='shownodelog.php3?node_id=$node_id'>LOG</a>)</td>\n";
echo " <td align=center>
<A href='nodessh.php3?node_id=$node_id'>
<img src=\"ssh.gif\" alt=s></A></td>\n";
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