function RPCisAvailable($imageid, $start, $end, $userid)
{
#FIXME this function doesn't properly handle cluster reservations
global $requestInfo;
$images = getImages();
$requestInfo["start"] = $start;
$requestInfo["end"] = $end;
$requestInfo["imageid"] = $imageid;
$allocatedcompids = array(0);
if ($requestInfo["start"] <= time()) {
$now = 1;
} else {
$now = 0;
}
# get list of schedules
$starttime = minuteOfWeek($start);
$endtime = minuteOfWeek($end);
# request is within a single week
if (weekOfYear($start) == weekOfYear($end)) {
$query = "SELECT scheduleid " . "FROM scheduletimes " . "WHERE start <= {$starttime} AND " . "end >= {$endtime}";
} elseif ($end - $start >= SECINDAY * 7) {
$query = "SELECT scheduleid " . "FROM scheduletimes " . "WHERE start = 0 AND " . "end = 10080";
} else {
$query = "SELECT s1.scheduleid " . "FROM scheduletimes s1, " . "scheduletimes s2 " . "WHERE s1.scheduleid = s2.scheduleid AND " . "s1.start <= {$starttime} AND " . "s1.end = 10080 AND " . "s2.start = 0 AND " . "s2.end >= {$endtime}";
}
$scheduleids = array();
$qh = doQuery($query, 127);
while ($row = mysql_fetch_row($qh)) {
array_push($scheduleids, $row[0]);
}
$requestInfo["computers"] = array();
$requestInfo["computers"][0] = 0;
$requestInfo["images"][0] = $imageid;
# loop to check for available computers for all needed images
if ($images[$imageid]["imagemetaid"] != NULL) {
$count = 1;
foreach ($images[$imageid]["subimages"] as $imgid) {
$requestInfo['computers'][$count] = 0;
$requestInfo['images'][$count] = $imgid;
$count++;
}
}
// get semaphore lock
if (!semLock()) {
abort(3);
}
$startstamp = unixToDatetime($start);
$endstamp = unixToDatetime($end + 900);
foreach ($requestInfo["images"] as $key => $imageid) {
#$osid = getOSid($os);
# check for max concurrent usage of image
if ($images[$imageid]['maxconcurrent'] != NULL) {
$query = "SELECT COUNT(rs.imageid) AS currentusage " . "FROM reservation rs, " . "request rq " . "WHERE '{$startstamp}' < rq.end AND " . "'{$endstamp}' > (rq.start - INTERVAL 900 SECOND) AND " . "rs.requestid = rq.id AND " . "rs.imageid = {$imageid} AND " . "rq.stateid NOT IN (1,5,11,12,16,17)";
$qh = doQuery($query, 101);
if (!($row = mysql_fetch_assoc($qh))) {
semUnlock();
return 0;
}
if ($row['currentusage'] >= $images[$imageid]['maxconcurrent']) {
semUnlock();
return -1;
}
}
# get platformid that matches $imageid
$query = "SELECT platformid FROM image WHERE id = {$imageid}";
$qh = doQuery($query, 125);
if (!($row = mysql_fetch_row($qh))) {
semUnlock();
return 0;
}
$platformid = $row[0];
# get computers $imageid maps to
$tmp = getMappedResources($imageid, "image", "computer");
if (!count($tmp)) {
semUnlock();
return 0;
}
$mappedcomputers = implode(',', $tmp);
# get computers for available schedules and platforms
$computerids = array();
$currentids = array();
$blockids = array();
# get list of available computers
$resources = getUserResources(array("imageAdmin", "imageCheckOut"), array("available"), 0, 0, $userid);
$computers = implode("','", array_keys($resources["computer"]));
$computers = "'{$computers}'";
$alloccompids = implode(",", $allocatedcompids);
$schedules = implode(',', $scheduleids);
$query = "SELECT DISTINCT c.id, " . "c.currentimageid " . "FROM computer c, " . "image i, " . "state s " . "WHERE c.scheduleid IN ({$schedules}) AND " . "c.platformid = {$platformid} AND " . "c.stateid = s.id AND " . "s.name != 'maintenance' AND " . "s.name != 'vmhostinuse' AND " . "s.name != 'hpc' AND " . "s.name != 'failed' AND ";
if ($now) {
$query .= "s.name != 'reloading' AND " . "s.name != 'timeout' AND " . "s.name != 'inuse' AND ";
}
$query .= "i.id = {$imageid} AND " . "c.RAM >= i.minram AND " . "c.procnumber >= i.minprocnumber AND " . "c.procspeed >= i.minprocspeed AND " . "c.network >= i.minnetwork AND " . "c.id IN ({$computers}) AND " . "c.id IN ({$mappedcomputers}) AND " . "c.id NOT IN ({$alloccompids}) " . "ORDER BY (c.procspeed * c.procnumber) DESC, " . "RAM DESC, " . "network DESC";
$qh = doQuery($query, 129);
while ($row = mysql_fetch_assoc($qh)) {
array_push($computerids, $row['id']);
if ($row['currentimageid'] == $imageid) {
array_push($currentids, $row['id']);
}
}
# get computer ids available from block reservations
$blockids = getAvailableBlockComputerids($imageid, $start, $end, $allocatedcompids);
# remove computers from list that are already scheduled
$usedComputerids = array();
$query = "SELECT DISTINCT rs.computerid " . "FROM reservation rs, " . "request rq, " . "user u " . "WHERE '{$startstamp}' < rq.end AND " . "'{$endstamp}' > (rq.start - INTERVAL 900 SECOND) AND " . "rs.requestid = rq.id AND " . "rq.stateid != 1 AND " . "rq.stateid != 5 AND " . "rq.stateid != 12 AND " . "rq.userid = u.id AND " . "u.unityid != 'vclreload'";
$qh = doQuery($query, 130);
while ($row = mysql_fetch_row($qh)) {
array_push($usedComputerids, $row[0]);
}
$computerids = array_diff($computerids, $usedComputerids);
$currentids = array_diff($currentids, $usedComputerids);
$blockids = array_diff($blockids, $usedComputerids);
if (count($currentids)) {
$return = array_shift($currentids);
} elseif (count($computerids)) {
$return = array_shift($computerids);
} else {
$return = 0;
}
}
semUnlock();
return $return;
}
function getAvailableSchedules($start, $end)
{
# get list of schedules
$starttime = minuteOfWeek($start);
$endtime = minuteOfWeek($end);
# request is within a single week
if (weekOfYear($start) == weekOfYear($end)) {
$query = "SELECT scheduleid " . "FROM scheduletimes " . "WHERE start <= {$starttime} AND " . "end >= {$endtime}";
} elseif ($end - $start >= SECINDAY * 7) {
$query = "SELECT scheduleid " . "FROM scheduletimes " . "WHERE start = 0 AND " . "end = 10080";
} else {
$query = "SELECT s1.scheduleid " . "FROM scheduletimes s1, " . "scheduletimes s2 " . "WHERE s1.scheduleid = s2.scheduleid AND " . "s1.start <= {$starttime} AND " . "s1.end = 10080 AND " . "s2.start = 0 AND " . "s2.end >= {$endtime}";
}
$scheduleids = array();
$qh = doQuery($query, 127);
while ($row = mysql_fetch_row($qh)) {
array_push($scheduleids, $row[0]);
}
return $scheduleids;
}