char *hubCommandGetReciept(char *command)
/* Send command to hub, wait for one line respons and
* return it. freeMem return value when done. */
{
struct paraMessage pm;
if (!commandHub(command))
return NULL;
if (pmReceive(&pm, hubRudp))
return cloneString(pm.data);
else
return NULL;
}
void paraNode()
/* paraNode - a net server. */
{
char *line;
char *command;
struct sockaddr_in sai;
/* We have to know who we are... */
hostName = getMachine();
initRandom();
getTicksToHundreths();
/* log init */
if (optionExists("log"))
logOpenFile("paraNode", optionVal("log", NULL));
else
logOpenSyslog("paraNode", optionVal("logFacility", NULL));
logSetMinPriority(optionVal("logMinPriority", "info"));
logInfo("starting paraNode on %s", hostName);
/* Make job lists. */
jobsRunning = newDlList();
jobsFinished = newDlList();
/* Set up socket and self to listen to it. */
ZeroVar(&sai);
sai.sin_family = AF_INET;
sai.sin_port = htons(paraNodePort);
sai.sin_addr.s_addr = INADDR_ANY;
mainRudp = rudpMustOpenBound(&sai);
mainRudp->maxRetries = 12;
/* Event loop. */
findNow();
for (;;)
{
/* Get next incoming message and optionally check to make
* sure that it's from a host we trust, and check signature
* on first bit of incoming data. */
if (pmReceive(&pmIn, mainRudp))
{
findNow();
if (hubName == NULL || ntohl(pmIn.ipAddress.sin_addr.s_addr) == hubIp
|| ntohl(pmIn.ipAddress.sin_addr.s_addr) == localIp)
{
/* Host and signature look ok, read a string and
* parse out first word as command. */
line = pmIn.data;
logDebug("message from %s: \"%s\"",
paraFormatIp(ntohl(pmIn.ipAddress.sin_addr.s_addr)),
line);
command = nextWord(&line);
if (command != NULL)
{
if (sameString("quit", command))
break;
else if (sameString("run", command))
doRun(line, &pmIn.ipAddress);
else if (sameString("jobDone", command))
jobDone(line);
else if (sameString("status", command))
doStatus();
else if (sameString("kill", command))
doKill(line);
else if (sameString("check", command))
doCheck(line, &pmIn.ipAddress);
else if (sameString("resurrect", command))
doResurrect(line, &pmIn.ipAddress);
else if (sameString("listJobs", command))
listJobs();
else if (sameString("fetch", command))
doFetch(line);
else
logWarn("invalid command: \"%s\"", command);
}
logDebug("done command");
}
else
{
logWarn("command from unauthorized host %s",
paraFormatIp(ntohl(pmIn.ipAddress.sin_addr.s_addr)));
}
}
}
rudpClose(&mainRudp);
}
