bool gotReplyWrapperxd ( void *state ) {
// grab it
XmlDoc *xd = (XmlDoc *)state;
// get it
UdpSlot *slot = (UdpSlot *)xd->m_slot;
// parse the request
Msg20Request *req = (Msg20Request *)slot->m_readBuf;
// print time
long long took = gettimeofdayInMilliseconds() - xd->m_setTime;
// if there is a baclkog of msg20 summary generation requests this
// is really not the cpu it took to make the smmary, but how long it
// took to get the reply. this request might have had to wait for the
// other summaries to finish computing before it got its turn,
// meanwhile its clock was ticking. TODO: make this better?
// only do for niceness 0 otherwise it gets interrupted by quickpoll
// and can take a long time.
if ( (req->m_isDebug || took > 100) && req->m_niceness == 0 )
log("query: Took %lli ms to compute summary for d=%lli u=%s "
"niceness=%li",
took,
xd->m_docId,xd->m_firstUrl.m_url,
xd->m_niceness );
// error?
if ( g_errno ) { xd->m_reply.sendReply ( xd ); return true; }
// this should not block now
Msg20Reply *reply = xd->getMsg20Reply ( );
// sanity check, should not block here now
if ( reply == (void *)-1 ) { char *xx=NULL;*xx=0; }
// NULL means error, -1 means blocked. on error g_errno should be set
if ( ! reply && ! g_errno ) { char *xx=NULL;*xx=0;}
// send it off. will send an error reply if g_errno is set
return reply->sendReply ( xd );
}
// . this is called
// . destroys the UdpSlot if false is returned
void handleRequest20 ( UdpSlot *slot , long netnice ) {
// . check g_errno
// . before, we were not sending a reply back here and we continued
// to process the request, even though it was empty. the slot
// had a NULL m_readBuf because it could not alloc mem for the read
// buf i'm assuming. and the slot was saved in a line below here...
// state20->m_msg22.m_parent = slot;
if ( g_errno ) {
log("net: Msg20 handler got error: %s.",mstrerror(g_errno));
g_udpServer.sendErrorReply ( slot , g_errno );
return;
}
// ensure request is big enough
if ( slot->m_readBufSize < (long)sizeof(Msg20Request) ) {
g_udpServer.sendErrorReply ( slot , EBADREQUESTSIZE );
return;
}
// parse the request
Msg20Request *req = (Msg20Request *)slot->m_readBuf;
// . turn the string offsets into ptrs in the request
// . this is "destructive" on "request"
long nb = req->deserialize();
// sanity check
if ( nb != slot->m_readBufSize ) { char *xx = NULL; *xx = 0; }
// sanity check, the size include the \0
if ( req->size_coll <= 1 || *req->ptr_coll == '\0' ) {
log("query: Got empty collection in msg20 handler. FIX!");
char *xx =NULL; *xx = 0;
}
// if it's not stored locally that's an error
if ( req->m_docId >= 0 && ! g_titledb.isLocal ( req->m_docId ) ) {
log("query: Got msg20 request for non-local docId %lli",
req->m_docId);
g_udpServer.sendErrorReply ( slot , ENOTLOCAL );
return;
}
// sanity
if ( req->m_docId == 0 && ! req->ptr_ubuf ) { char *xx=NULL;*xx=0; }
long long startTime = gettimeofdayInMilliseconds();
// alloc a new state to get the titlerec
XmlDoc *xd;
try { xd = new (XmlDoc); }
catch ( ... ) {
g_errno = ENOMEM;
log("query: msg20 new(%i): %s", sizeof(XmlDoc),
mstrerror(g_errno));
g_udpServer.sendErrorReply ( slot, g_errno );
return;
}
mnew ( xd , sizeof(XmlDoc) , "xd20" );
// ok, let's use the new XmlDoc.cpp class now!
xd->set20 ( req );
// encode slot
xd->m_slot = slot;
// set the callback
xd->setCallback ( xd , gotReplyWrapperxd );
// set set time
xd->m_setTime = startTime;
xd->m_cpuSummaryStartTime = 0;
// . now as for the msg20 reply!
// . TODO: move the parse state cache into just a cache of the
// XmlDoc itself, and put that cache logic into XmlDoc.cpp so
// it can be used more generally.
Msg20Reply *reply = xd->getMsg20Reply ( );
// this is just blocked
if ( reply == (void *)-1 ) return;
// got it?
gotReplyWrapperxd ( xd );
}