/**
* Performs general periodic maintenance. This routine handles alle open pages/main and
* pages/mirror file service requests. These requests are obtained from the netfiles builder. For
* each file that should be serviced, the filechange method is called. This routine handles a
* maximum of 10 page/main, and 50 page/mirror service calls each time it is called. The first
* time this method is call, nothing happens (?)
*
* @return <code>true</code> if maintenance was performed, <code>false</code> otherwise
*/
public boolean probeCall() {
if (first) {
// skip first time this method is called
first = false;
} else {
// handle up to 10 pages/main fileservice requests
try {
Netfiles bul = (Netfiles) Vwms.getMMBase().getMMObject("netfiles");
// Enumeration e=bul.search("WHERE service='pages' AND subservice='main' AND
// status="+Netfiles.STATUS_REQUEST+" ORDER BY number DESC");
Enumeration e =
bul.search("service=='pages'+subservice=='main'+status=" + Netfiles.STATUS_REQUEST);
int i = 0;
while (e.hasMoreElements() && i < 10) {
MMObjectNode node = (MMObjectNode) e.nextElement();
fileChange("" + node.getIntValue("number"), "c");
i++;
}
} catch (Exception e) {
log.error(Logging.stackTrace(e));
}
// handle up to 50 pages/mirror fileservice requests
try {
Netfiles bul = (Netfiles) Vwms.getMMBase().getMMObject("netfiles");
Enumeration e =
bul.search("service=='pages'+subservice=='mirror'+status=" + Netfiles.STATUS_REQUEST);
// Enumeration e=bul.search("WHERE service='pages' AND subservice='mirror' AND
// status="+Netfiles.STATUS_REQUEST+" ORDER BY number DESC");
int i = 0;
while (e.hasMoreElements() && i < 50) {
MMObjectNode node = (MMObjectNode) e.nextElement();
fileChange("" + node.getIntValue("number"), "c");
i++;
}
} catch (Exception e) {
log.error(Logging.stackTrace(e));
}
}
return true;
}
/** @javadoc */
public void handleChanged(String buildername, int number) {
// method checks if this really something valid
// and we should signal a new version
boolean dirty = false;
for (VersionCacheWhenNode whennode : whens) {
List<String> types = whennode.getTypes();
// check if im known in the types part
if (types.contains(buildername)) {
// is there only 1 builder type ?
if (log.isDebugEnabled()) log.debug("types=" + types.toString());
if (types.size() == 1) {
dirty = true;
} else {
// so multiple prepare a multilevel !
List<String> nodes = whennode.getNodes();
List<String> fields = new Vector<String>();
fields.add(buildername + ".number");
List<String> ordervec = new Vector<String>();
List<String> dirvec = new Vector<String>();
List<MMObjectNode> vec =
mmb.getClusterBuilder()
.searchMultiLevelVector(
nodes,
fields,
"YES",
types,
buildername + ".number==" + number,
ordervec,
dirvec);
if (log.isDebugEnabled()) log.debug("VEC=" + vec);
if (vec != null && vec.size() > 0) {
dirty = true;
}
}
}
}
if (dirty) {
// add one to the version of this counter
int version = versionnode.getIntValue("version");
versionnode.setValue("version", version + 1);
versionnode.commit();
if (log.isDebugEnabled()) log.debug("Changed = " + (version + 1));
}
}
/**
* Handles a service-request on a file, registered in the netfiles builder. Depending on the
* subservice requested, this routine calls {@link #handleMirror} or {@link #handleMain}.
*
* @param number Number of the node in the netfiles buidler than contain service request
* information.
* @param ctype the type of change on that node ("c" : node was changed)
* @return <code>true</code>
*/
public boolean fileChange(String number, String ctype) {
// log.debug("fileChange="+number+" "+ctype);
// first get the change node so we can see what is the matter with it.
Netfiles bul = (Netfiles) Vwms.getMMBase().getMMObject("netfiles");
MMObjectNode filenode = bul.getNode(number);
if (filenode != null) {
// obtain all the basic info on the file.
String service = filenode.getStringValue("service");
String subservice = filenode.getStringValue("subservice");
int status = filenode.getIntValue("status");
// jump to correct subhandles based on the subservice
if (subservice.equals("main")) {
return handleMain(filenode, status, ctype);
} else if (subservice.equals("mirror")) {
return handleMirror(filenode, status, ctype);
}
}
return true;
}
