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Hostdb.cpp
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Hostdb.cpp
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#include <ifaddrs.h>
#include "gb-include.h"
#include "Hostdb.h"
#include "HashTableT.h"
#include "UdpServer.h"
#include "Threads.h"
#include "Process.h"
#include <sched.h>
#include <sys/types.h>
#include <sys/wait.h>
#include "sort.h"
#include "Rdb.h" // RDB_INDEXDB,...
//#include "Indexdb.h"
#include "Posdb.h"
#include "Titledb.h"
#include "Spider.h"
#include "Clusterdb.h"
#include "Datedb.h"
#include "Tfndb.h"
#include "Dns.h"
#include "Revdb.h"
//extern bool g_isYippy;
// a global class extern'd in .h file
Hostdb g_hostdb;
// the supplemental network used to get titleRecs from by gov.gigablast.com
// for harvesting link text from the larger index
Hostdb g_hostdb2;
//HashTableT <uint64_t, uint32_t> g_hostTableUdp;
//HashTableT <uint64_t, uint32_t> g_hostTableTcp;
HashTableX g_hostTableUdp;
HashTableX g_hostTableTcp;
Host *g_listHosts [ MAX_HOSTS * 4 ];
uint32_t g_listIps [ MAX_HOSTS * 4 ];
uint16_t g_listPorts [ MAX_HOSTS * 4 ];
int32_t g_listNumTotal = 0;
bool isMyIp ( int32_t ip ) ;
void Hostdb::resetPortTables () {
g_hostTableUdp.reset();
g_hostTableTcp.reset();
}
static int cmp ( const void *h1 , const void *h2 ) ;
//static int cmp2 ( const void *h1 , const void *h2 ) ;
//static void *syncStartWrapper_r ( void *state );
//static void syncDoneWrapper ( void *state );
//static void syncWrapper ( int fd, void *state );
//pid_t g_syncpid = -1;
//int32_t g_syncticker = 0;
//int32_t g_syncTimeout = -1;
Hostdb::Hostdb ( ) {
m_hosts = NULL;
m_numHosts = 0;
m_ips = NULL;
m_syncHost = NULL;
m_initialized = false;
m_crcValid = false;
m_crc = 0;
m_created = false;
m_myHost = NULL;
}
Hostdb::~Hostdb () {
reset();
}
void Hostdb::reset ( ) {
// for ( int32_t i = 0 ; m_hosts && i < m_numHosts ; i++ ) {
// Host *h = &m_hosts[i];
// // if nothing do not try to free it
// if ( ! h->m_lastKnownGoodCrawlInfoReply ) continue;
// mfree ( h->m_lastKnownGoodCrawlInfoReply ,
// h->m_replyAllocSize ,
// "lknown" );
// // do not re-free
// h->m_lastKnownGoodCrawlInfoReply = NULL;
// }
if ( m_hosts )
mfree ( m_hosts, m_allocSize,"Hostdb" );
if ( m_ips ) mfree ( m_ips , m_numIps * 4, "Hostdb" );
m_hosts = NULL;
m_ips = NULL;
m_numIps = 0;
m_syncHost = NULL;
}
char *Hostdb::getNetName ( ) {
if ( this == &g_hostdb ) return "default";
return m_netName;
}
// . gets filename that contains the hosts from the Conf file
// . return false on error
// . g_errno may NOT be set
bool Hostdb::init ( int32_t hostIdArg , char *netName ,
bool proxyHost , char useTmpCluster , char *cwd ) {
// reset my ip and port
m_myIp = 0;
m_myIpShotgun = 0;
m_myPort = 0;
m_myHost = NULL;
//m_myPort2 = 0;
m_numHosts = 0;
m_numHostsPerShard = 0;
m_loopbackIp = atoip ( "127.0.0.1" , 9 );
m_useTmpCluster = useTmpCluster;
m_initialized = true;
char *dir = "./";
if ( cwd ) dir = cwd;
// try localhosts.conf first
char *filename = "hosts.conf";
//if ( strcmp ( filename , "hosts.conf" ) == 0 )
// filename = "localhosts.conf";
//bool triedEtc = false;
// for now we autodetermine
if ( hostIdArg != -1 ) { char *xx=NULL;*xx=0; }
// init to -1
m_hostId = -1;
retry:
/*
// for yippy use host as port
int32_t yippyPort;
if ( g_isYippy ) {
yippyPort = hostId;
hostId = 0;
}
*/
// save the name of the network... we can have multiple networks now
// since we need to get title recs from separate networks for getting
// link text for gov.gigablast.com
m_netName[0] = '\0';
if ( netName ) strncpy ( m_netName , netName , 31 );
// make sure our hostId is in our conf file
//if ( hostId < 0 )
// return log(
// "conf: Negative hostId %"INT32" supplied",hostId);
// set early for calling log()
//m_hostId = hostId;
// set clock in sync in fctypes.cpp
//if ( m_hostId == 0 ) g_clockInSync = true;
// log it
//if(this == &g_hostdb) logf(LOG_INIT,"conf: HostId is %"INT32".",m_hostId);
// . File::open() open old if it exists, otherwise,
File f;
f.set ( dir , filename );
// . returns -1 on error and sets g_errno
// . returns false if does not exist, true otherwise
int32_t status = f.doesExist();
int32_t numRead;
// skip config file for yippy
/*
if ( g_isYippy ) {
m_bufSize = sprintf(m_buf,
"port-offset: 0\n"
"index-splits: 1\n"
"working-dir: /home/emily/\n"
"proxy 10.36.14.10 \n"
);
goto skip;
}
*/
// return false on error (g_errno should be set)
if ( status <= -1 ) return false;
// return false if the conf file does not exist
if ( status == 0 ) {
// hosts2.conf is not necessary
if ( this == &g_hostdb2 ) return true;
g_errno = ENOHOSTSFILE;
// if doing localhosts.conf now try hosts.conf
// if ( ! triedEtc ) { //strcmp(filename,"hosts.conf") == 0 ) {
// triedEtc = true;
// dir = "/etc/gigablast/";
// //filename = "hosts.conf";
// g_errno = 0;
// goto retry;
// }
// now we generate one if that is not there
createFile:
if ( ! m_created ) {
m_created = true;
g_errno = 0;
dir = cwd;
createHostsConf( cwd );
goto retry;
}
log("conf: Filename %s does not exist." ,filename);
return false;
}
// get file size
m_bufSize = f.getFileSize();
// return false if too big
if ( m_bufSize > (MAX_HOSTS+MAX_SPARES) * 128 ) {
g_errno = EBUFTOOSMALL;
return log(
"conf: %s has filesize "
"of %"INT32" bytes, which is greater than %"INT32" max.",
filename,m_bufSize,
(int32_t)(MAX_HOSTS+MAX_SPARES)*128);
}
// note it
//log("host: reading %s",f.getFilename());
// save it
//m_hostsConfFilename.safePrintf("%s",f.getFilename());
// open the file
if ( ! f.open ( O_RDONLY ) ) return false;
// read in the file
numRead = f.read ( m_buf , m_bufSize , 0 /*offset*/ );
// ensure g_errno is now set if numRead != m_bufSize
if ( numRead != m_bufSize )
return log(
"conf: Error reading "
"%s : %s." , filename,mstrerror(g_errno));
// NULL terminate what we read
m_buf [ m_bufSize ] = '\0';
// skip:
// how many hosts do we have?
char *p = m_buf;
char *pend = m_buf + m_bufSize;
int32_t i = 0;
m_numSpareHosts = 0;
m_numProxyHosts = 0;
m_numHosts = 0;
for ( ; *p ; p++ ) {
if ( is_wspace_a (*p) ) continue;
// skip comments
if ( *p == '#' ) { while ( *p && *p != '\n' ) p++; continue; }
// MUST be a number
if ( ! is_digit ( *p ) ) {
// skip known directives
if ( ! strncmp(p,"port-offset:",12) ||
! strncmp(p,"index-splits:",13) ||
! strncmp(p,"num-mirrors:",12) ||
! strncmp(p,"working-dir:",12) )
p = p;
// check if this is a spare host
else if ( //pend - p < 5 &&
strncasecmp(p, "spare", 5) == 0 )
// count as a spare
m_numSpareHosts++;
// check if this is a proxy host
else if ( //pend - p < 5 &&
strncasecmp(p, "proxy", 5) == 0 )
// count as a spare
m_numProxyHosts++;
// query compression proxies count as proxies
else if ( strncasecmp(p, "qcproxy", 7) == 0 )
m_numProxyHosts++;
// spider compression proxies count as proxies
else if ( strncasecmp(p, "scproxy", 7) == 0 )
m_numProxyHosts++;
else
return log("conf: %s is malformed. First "
"item of each non-comment line "
"must be a NUMERIC hostId, "
"SPARE or PROXY. line=%s",filename,
p);
}
else
// count it as a host
m_numHosts++;
i++;
// skip line
while ( *p && *p != '\n' ) p++;
}
// set g_errno, log and return false if no hosts found in the file
if ( i == 0 ) {
g_errno = ENOHOSTS;
log("conf: No host entries found in %s.",filename);
goto createFile;
return false;
}
// alloc space for this many Hosts structures
// save buffer size
m_allocSize = sizeof(Host) * i;
m_hosts = (Host *) mcalloc ( m_allocSize ,"Hostdb");
if ( ! m_hosts ) return log(
"conf: Memory allocation failed.");
//uint32_t maxShard = 0;
int32_t numGrunts = 0;
// now fill up m_hosts
p = m_buf;
i = 0;
int32_t line = 1;
//uint32_t lastShard = 0;
int32_t proxyNum = 0;
// assume defaults
//int32_t portOffset = -99999;
int32_t indexSplits = 0;
char *wdir2 = NULL;
int32_t wdirlen2 = 0;
int32_t numMirrors = -1;
for ( ; *p ; p++ , line++ ) {
if ( is_wspace_a (*p) ) continue;
// skip comments
if ( *p == '#' ) { while ( *p && *p != '\n' ) p++; continue; }
// does the line say "port-offset: xxxx" ?
if ( ! strncmp(p,"index-splits:",13) ) {
p += 13;
// skip spaces after the colon
while ( is_wspace_a(*p) ) p++;
indexSplits = atol(p);
while ( *p && *p != '\n' ) p++;
continue;
}
if ( ! strncmp(p,"num-mirrors:",12) ) {
p += 12;
// skip spaces after the colon
while ( is_wspace_a(*p) ) p++;
numMirrors = atol(p);
while ( *p && *p != '\n' ) p++;
continue;
}
// does the line say "working-dir: xxxx" ?
if ( ! strncmp(p,"working-dir:",12) ) {
p += 12;
// skip spaces after the colon
while ( is_wspace_a(*p) ) p++;
wdir2 = p;
// skip until not space
while ( *p && ! is_wspace_a(*p) ) p++;
// set length
wdirlen2 = p - wdir2;
// mark the end
char *end = p;
while ( *p && *p != '\n' ) p++;
// null term it
*end = '\0';
continue;
}
// skip any spaces at start of line
while ( is_wspace_a(*p) ) p++;
// get host in order
Host *h = &m_hosts[i];
// clear it
memset ( h , 0 , sizeof(Host) );
// . see what type of host this is
// . proxies are not given numbers as yet in the hosts.conf
// so number them in the order in which they come
if ( is_digit(*p) ) {
h->m_type = HT_GRUNT;
h->m_hostId = atoi(p);
}
else if ( strncasecmp(p,"spare",5)==0 ) {
h->m_type = HT_SPARE;
h->m_hostId = -1;
}
else if ( strncasecmp(p,"qcproxy",7)==0 ) {
h->m_type = HT_QCPROXY;
h->m_hostId = proxyNum++;
}
else if ( strncasecmp(p,"scproxy",7)==0 ) {
h->m_type = HT_SCPROXY;
h->m_hostId = proxyNum++;
}
else if ( strncasecmp(p,"proxy",5)==0 ) {
h->m_type = HT_PROXY;
h->m_hostId = proxyNum++;
}
// ignore old version "port-offset:"
else if ( strncasecmp(p,"port-offset:",12)==0 ) {
while ( *p && *p != '\n' ) p++;
continue;
}
else {
logf(LOG_INFO,"hosts: hosts.conf bad line: %s",p);
g_errno = EBADENGINEER;
return false;
}
//bool isSpare = false;
//bool isProxy = false;
//if ( i >= m_numHosts && i < (m_numHosts + m_numSpareHosts) )
// isSpare = true;
//if (i >= (m_numHosts + m_numSpareHosts) )
// isProxy = true;
char *wdir;
int32_t wdirlen;
// reset this
h->m_pingMax = -1;
h->m_retired = false;
// skip numeric hostid or "proxy" keyword
while ( ! is_wspace_a(*p) ) p++;
// read in switch id
//h->m_switchId = atoi(p);
// skip spaces after hostid or "proxy" keyword
//while ( ! is_wspace_a(*p) ) p++;
// skip spaces after hostid/port/spare keyword
while ( is_wspace_a(*p) ) p++;
/*
// if proxy get proxy id
if ( ! ( h->m_type & HT_GRUNT ) ) {
// get the hostid
h->m_hostId = atol(p);
// skip that
for ( ; is_digit(*p) ; p++ );
// skip spaces after it
while ( is_wspace_a(*p) ) p++;
}
*/
int32_t port1 = 6002;
int32_t port2 = 7002;
int32_t port3 = 8002;
int32_t port4 = 9002;
// support old format "000 gk0" and use default ports above
//if ( p[0] == 'g' && p[1] == 'k' ) goto skip;
// sp1 is the proxy
//if ( p[0] == 's' && p[1] == 'p' ) goto skip;
// now the four ports
port1 = atol(p);
// skip digits
for ( ; is_digit(*p) ; p++ );
// skip spaces after it
while ( is_wspace_a(*p) ) p++;
port2 = atol(p);
// skip digits
for ( ; is_digit(*p) ; p++ );
// skip spaces after it
while ( is_wspace_a(*p) ) p++;
port3 = atol(p);
// skip digits
for ( ; is_digit(*p) ; p++ );
// skip spaces after it
while ( is_wspace_a(*p) ) p++;
port4 = atol(p);
// skip digits
for ( ; is_digit(*p) ; p++ );
// skip spaces after it
while ( is_wspace_a(*p) ) p++;
//skip:
// set our ports
h->m_dnsClientPort = port1; // 6000
h->m_httpsPort = port2; // 7000
h->m_httpPort = port3; // 8000
h->m_port = port4; // 9000
// then hostname
char *host = p;
// . sanity check, hostname must start with letter
// . nah, it can be an ip now!
//if ( ! is_alpha_a(*p) ) {
// log("admin: hostname %s is bad",p);
// g_errno = EBADENGINEER;
// return false;
//}
// skip hostname (can be an ip now)
while ( *p && (*p=='.'||is_alnum_a(*p)) ) p++;
// get length
int32_t hlen = p - host;
// limit
if ( hlen > 15 ) {
g_errno = EBADENGINEER;
log("admin: hostname too long in hosts.conf");
return false;
}
// copy it
gbmemcpy ( h->m_hostname , host , hlen );
// null term it
h->m_hostname[hlen] = '\0';
// need this for hashing
hashinit();
// if hostname is an ip that's ok i guess
int32_t ip = atoip ( h->m_hostname );
// for localhost
//if ( ! ip && host &&
// ! strncasecmp(host,"localhost",9) ) {
// ip = atoip("127.0.0.1");
//}
// if not an ip, look it up
if ( ! ip ) {
// get key
key_t k = hash96 ( host , hlen );
// get eth0 ip of hostname in /etc/hosts
g_dns.isInFile ( k , &ip );
//g_errno = EBADENGINEER;
//log("admin: hostname \"%s\" in "
// "hosts.conf "
// "not in /etc/hosts",h->m_hostname);
//return false;
//}
}
// still bad?
if ( ! ip ) {
g_errno = EBADENGINEER;
log("admin: no ip for hostname \"%s\" in "
"hosts.conf in /etc/hosts",
h->m_hostname);
return false;
}
// store the ip
h->m_ip = ip;
// get possible 2nd hostname
//p++;
// skip spaces or until \n
for ( ; *p == ' ' ; p++ );
// must be a 2nd hostname
char *hostname2 = NULL;
int32_t hlen2 = 0;
if ( *p != '\n' ) {
hostname2 = p;
// find end of it
for ( ; *p=='.' ||
is_digit(*p) ||
is_alnum_a(*p) ; p++ );
hlen2 = p - hostname2;
}
int32_t inc = 0;
int32_t ip2 = 0;
// was it "retired"?
if ( hostname2 && strncasecmp(hostname2,"retired",7) == 0 ) {
h->m_retired = true;
hostname2 = NULL;
//goto retired;
}
// if no secondary hostname for "gk2" (e.g.) try "gki2"
char tmp2[32];
if ( ! hostname2 && host[0]=='g' && host[1]=='k') {
int32_t hn = atol(host+2);
sprintf(tmp2,"gki%"INT32"",hn);
hostname2 = tmp2;
}
// limit
if ( hlen2 > 15 ) {
g_errno = EBADENGINEER;
log("admin: hostname too long in hosts.conf");
return false;
}
// a direct ip address?
if ( hostname2 ) {
gbmemcpy ( h->m_hostname2,hostname2,hlen2);
h->m_hostname2[hlen2] = '\0';
ip2 = atoip ( h->m_hostname2 );
}
if ( ! ip2 && hostname2 ) {
// set this ip
//int32_t nextip;
// now that must have the eth1 ip in /etc/hosts
key_t k = hash96 ( h->m_hostname2 , hlen2 );
// get eth1 ip of hostname in /etc/hosts
if ( ! g_dns.isInFile ( k , &ip2 ) ) {
log("admin: secondary host %s in hosts.conf "
"not in /etc/hosts. Using secondary "
"ethernet (eth1) ip "
"of %s",hostname2,iptoa(ip));
//nextip = ip;
// just use the old ip then!
//g_errno = EBADENGINEER;
//return false;
}
}
//retired:
// if none, use initial ip as shotgun as well
if ( ! ip2 ) ip2 = ip;
// store the ip, the eth1 ip
h->m_ipShotgun = ip2; // nextip;
// . "p" should not point to first char after hostname
// . a special inc
inc = 0;
if ( useTmpCluster ) inc = 1;
// proxies never get their port inc'd
if ( h->m_type & (HT_ALL_PROXIES) ) inc = 0;
// . now p should point to first char after hostname
// . skip spaces and tabs
while ( *p && (*p==' '|| *p=='\t') )p++;
// is "RETIRED" after hostname?
if ( strncasecmp(p,"retired",7) == 0 )
h->m_retired = true;
// for qcproxies, the next thing is always an
// ip:port of another proxy that we forward the
// queries to.
if ( h->m_type & HT_QCPROXY ) {
char *s = p;
for ( ; *s && *s!=':' ; s++ );
int32_t ip = 0;
if ( *s == ':' ) ip = atoip(p,s-p);
int32_t port = 0;
if ( *s ) port = atol(s+1);
// sanity
if ( ip == 0 || port == 0 ) {
g_errno = EBADENGINEER;
log("admin: bad qcproxy line. must "
"have ip:port after hostname.");
return false;
}
h->m_forwardIp = ip;
h->m_forwardPort = port;
// skip that to port offset now
for ( ; *p && *p!=' ' && *p !='\t' ; p++);
// then skip spaces
for ( ; *p && (*p==' '|| *p=='\t') ; p++ );
}
// yippy hack
//if ( g_isYippy ) {
// h->m_httpPort = yippyPort; // 80;
//}
// and other stuff
//h->m_ideChannel = 0;
// our group is based on our split!
//h->m_group = i % g_hostdb.m_indexSplits; // # grps
//h->m_group = i % indexSplits; // # grps
//h->m_shardNum = i % indexSplits;
// i guess proxy and spares don't count
if ( h->m_type != HT_GRUNT ) h->m_shardNum = 0;
// are we a compression proxy?
//h->m_isCompressionProxy = false;
//bool isLocal = false;
//uint8_t *p = (uint8_t *)&h->m_ip;
//if ( p[0] == 10 ) isLocal = true;
//if ( p[0] == 192 && p[1] == 168 ) isLocal = true;
// 127.0.0.1
//if ( h->m_ip == 16777343 ) isLocal = true;
// compression proxies are off network so they can
// compress the spidered docs before sending to our
// network to save our bandwidth costs since our local
// fiber connection is expensive
//if ( isProxy && ! isLocal )
// h->m_isCompressionProxy = false;
// this is the same
wdir = wdir2;
wdirlen = wdirlen2; // gbstrlen ( wdir2 );
// and skip the old parsing junk
//goto skip;
// check for working dir override
if ( *p == '/' ) {
wdir = p;
while ( *p && ! isspace(*p) ) p++;
wdirlen = p - wdir;
}
if ( ! wdir ) {
g_errno = EBADENGINEER;
log("admin: need working-dir for host "
"in hosts.conf line %"INT32"",line);
return false;
}
//skip:
h->m_queryEnabled = true;
h->m_spiderEnabled = true;
// check for something after the working dir
h->m_note[0] = '\0';
if ( *p != '\n' ) {
// save the note
char *n = p;
while ( *n && *n != '\n' && n < pend ) n++;
int32_t noteSize = n - p;
if ( noteSize > 127 ) noteSize = 127;
gbmemcpy(h->m_note, p, noteSize);
*p++ = '\0'; // NULL terminate for atoip
if(strstr(h->m_note, "noquery")) {
h->m_queryEnabled = false;
}
if(strstr(h->m_note, "nospider")) {
h->m_spiderEnabled = false;
}
}
else
*p = '\0';
/*
sscanf ( p ,
"%"INT32" %s %s %hu %hu %hu %hu %hu %"INT32" %"INT32" %s" ,
&h->m_hostId ,
ipbuf1 ,
ipbuf2 ,
&h->m_port ,
&h->m_port2 ,
&h->m_dnsClientPort ,
&h->m_httpPort ,
&h->m_httpsPort,
&h->m_ideChannel ,
&h->m_group,
wdir );
*/
// keep these the same for now
h->m_externalHttpPort = h->m_httpPort;
h->m_externalHttpsPort = h->m_httpsPort;
// get max group number
//if ( h->m_shardNum > maxShard && h->m_type==HT_GRUNT )
// maxShard = h->m_shardNum;
if ( h->m_type == HT_GRUNT )
numGrunts++;
/*
if ( h->m_shardNum <= lastShard && h->m_shardNum != 0
&& !(h->m_type&(HT_ALL_PROXIES)) ) {
g_errno = EBADENGINEER;
return log("conf: Host has bad shard # in %s line %"INT32". "
"Shard #'s must be strictly increasing, with "
"the exception of going from the last "
"shard # to the shard # of zero.",
filename,line);
}
lastShard = h->m_shardNum;
*/
// skip line now
while ( *p && *p != '\n' )
p++;
// ensure they're in proper order without gaps
if ( h->m_type==HT_GRUNT && h->m_hostId != i ) {
g_errno = EBADHOSTID;
return log(
"conf: Unordered hostId of %"INT32", should be %"INT32" "
"in %s line %"INT32".",
h->m_hostId,i,filename,line);
}
// and working dir
if ( wdirlen > 127 ) {
g_errno = EBADENGINEER;
return log(
"conf: Host working dir too long in "
"%s line %"INT32".",filename,line);
}
if ( wdirlen <= 0 ) {
g_errno = EBADENGINEER;
return log(
"conf: No working dir supplied in "
"%s line %"INT32".",filename,line);
}
// make sure it is legit
if ( wdir[0] != '/' ) {
g_errno = EBADENGINEER;
return log(
"conf: working dir must start "
"with / in %s line %"INT32"",filename,line);
}
//wdir [ wdirlen ] = '\0';
// take off slash if there
if ( wdir[wdirlen-1]=='/' ) wdir[--wdirlen]='\0';
// get real path (no symlinks symbolic links)
// only if on same IP!!!!
if ( isMyIp ( h->m_ip ) ) {
char tmp[256];
int32_t tlen = readlink ( wdir , tmp , 250 );
// if we got the actual path, copy that over
if ( tlen != -1 ) {
// wdir currently references into the
// hosts.conf buf so don't store the expanded
// directory into there
wdir = tmp;
//strncpy(wdir,tmp,tlen);
wdirlen = tlen;
}
}
// add slash if none there
if ( wdir[wdirlen-1] !='/' ) wdir[wdirlen++] = '/';
// don't breach Host::m_dir[128] buffer
if ( wdirlen >= 128 ) {
log("conf: working dir %s is too long, >= 128 chars.",
wdir);
return false;
}
// copy it over
//strcpy ( m_hosts[i].m_dir , wdir );
gbmemcpy(m_hosts[i].m_dir, wdir, wdirlen);
m_hosts[i].m_dir[wdirlen] = '\0';
// reset this
//m_hosts[i].m_pingInfo.m_lastPing = 0LL;
m_hosts[i].m_lastPing = 0LL;
// and don't send emails on him until we got a good ping
m_hosts[i].m_emailCode = -2;
// we do not know if it is in sync
m_hosts[i].m_syncStatus = 2;
// not doing a sync right now
m_hosts[i].m_doingSync = 0;
// so UdpServer.cpp knows if we are in g_hostdb or g_hostdb2
m_hosts[i].m_hostdb = this;
// reset these
m_hosts[i].m_pingInfo.m_flags = 0;
m_hosts[i].m_pingInfo.m_cpuUsage = 0.0;
m_hosts[i].m_loadAvg = 0.0;
// point to next one
i++;
}
//m_numHosts = i;
m_numTotalHosts = i;
// how many shards are we configure for?
//m_numShards = maxShard + 1; // g_conf.m_numGroups;
// # of mirrors is zero if no mirrors,
// if it is 1 then each host has ONE MIRROR host
if ( numMirrors == 0 )
indexSplits = numGrunts;
if ( numMirrors > 0 )
indexSplits = numGrunts / (numMirrors+1);
if ( indexSplits == 0 ) {
g_errno = EBADENGINEER;
log("admin: need num-mirrors: xxx or "
"index-splits: xxx directive "
"in hosts.conf");
return false;
}
numMirrors = (numGrunts / indexSplits) - 1 ;
if ( numMirrors < 0 ) {
g_errno = EBADENGINEER;
log("admin: need num-mirrors: xxx or "
"index-splits: xxx directive "
"in hosts.conf (2)");
return false;
}
m_indexSplits = indexSplits;
m_numShards = numGrunts / (numMirrors+1);
//
// set Host::m_shardNum
//
for ( int32_t i = 0 ; i < numGrunts ; i++ ) {
Host *h = &m_hosts[i];
h->m_shardNum = i % indexSplits;
}
// assign spare hosts
if ( m_numSpareHosts > MAX_SPARES ) {
log ( "conf: Number of spares (%"INT32") exceeds max of %i, "
"truncating.", m_numSpareHosts, MAX_SPARES );
m_numSpareHosts = MAX_SPARES;
}
for ( i = 0; i < m_numSpareHosts; i++ ) {
m_spareHosts[i] = &m_hosts[m_numHosts + i];
}
// assign proxy hosts
if ( m_numProxyHosts > MAX_PROXIES ) {
log ( "conf: Number of proxies (%"INT32") exceeds max of %i, "
"truncating.", m_numProxyHosts, MAX_PROXIES );
char *xx=NULL;*xx=0;
m_numProxyHosts = MAX_PROXIES;
}
for ( i = 0; i < m_numProxyHosts; i++ ) {
m_proxyHosts[i] = &m_hosts[m_numHosts + m_numSpareHosts + i];
m_proxyHosts[i]->m_isProxy = true;
// sanity
if ( m_proxyHosts[i]->m_type == 0 ) { char *xx=NULL;*xx=0; }
}
// log discovered hosts
log ( LOG_INFO, "conf: Discovered %"INT32" hosts and %"INT32" spares and "
"%"INT32" proxies.",m_numHosts, m_numSpareHosts, m_numProxyHosts );
// if we have m_numShards we must have
int32_t hostsPerShard = m_numHosts / m_numShards;
// must be exact fit
if ( hostsPerShard * m_numShards != m_numHosts ) {
g_errno = EBADENGINEER;
return log("conf: Bad number of hosts for %"INT32" shards "
"in hosts.conf.",m_numShards);
}
// count number of hosts in each shard
for ( i = 0 ; i < m_numShards ; i++ ) {
int32_t count = 0;
for ( int32_t j = 0 ; j < m_numHosts ; j++ )
if ( m_hosts[j].m_shardNum == (uint32_t)i )
count++;
if ( count != hostsPerShard ) {
g_errno = EBADENGINEER;
return log("conf: Number of hosts in each shard "
"in %s is not equal.",filename);
}
}
// assume no ide sharing
//m_ideSharing = false;
// . print warning
// . TODO: speed this up when we get a lot of hosts
/*
for ( int32_t i = 0 ; i < m_numHosts ; i++ ) {
int32_t count = 0;
for ( int32_t j = 0 ; j < m_numHosts ; j++ ) {
if ( m_hosts[i].m_ip == m_hosts[j].m_ip &&
m_hosts[i].m_ideChannel ==m_hosts[j].m_ideChannel)
count++;
}
// do we have any ide sharing going on?
if ( count >= 2 ) m_ideSharing = true;
}
*/
// . make sure this is a legit # of hosts
// . numGroups should divide it evenly
// . TODO: actually should be a power of 2!!
/*
//if ( getNumBitsOn ( (uint32_t)m_numHosts ) != 1 ) {
// g_errno = EBADNUMHOSTS;
// return log(
// "conf: Number of hosts in %s is not power "
// "of 2",hostsPerGroup,filename);
//}
if ( getNumBitsOn ( (uint32_t)m_numHosts ) != 1 ) {
g_errno = EBADNUMHOSTS;
return log(
"conf: Number of hosts in %s is not power "
"of 2",filename);
}
*/
// set the groupId for each host
//for ( i = 0 ; i < m_numHosts ; i++ )
// m_hosts[i].m_groupId = g_hostdb.makeGroupId ( i, m_numGroups);
// set group #
//for ( i = 0 ; i < m_numHosts ; i++ )
// m_hosts[i].m_groupNum = i / hostsPerGroup;
// now sort hosts by shard # then HOST id (both ascending order)
gbsort ( m_hosts , m_numHosts , sizeof(Host), cmp );
// ensure hosts in order of groupId then hostId
//for ( i = 1 ; i < m_numHosts ; i++ ) {
// if ( m_hosts[i-1].m_groupId < m_hosts[i].m_groupId)continue;
// if ( m_hosts[i-1].m_groupId == m_hosts[i].m_groupId &&
// m_hosts[i-1].m_hostId < m_hosts[i].m_hostId )continue;
// return log(
// "conf: Hosts in %s not sorted correctly. "
// "Check order of hostId and groupId.",filename);
//}
// . set m_shards array
// . m_shards[i] is the first host in shardId "i"
// . any other hosts w/ same shardId immediately follow it
// . loop through each shard
int32_t j;
for ( i = 0 ; i < m_numShards ; i++ ) {
for ( j = 0 ; j < m_numHosts ; j++ )
if ( m_hosts[j].m_hostId == i ) break;
// this points to list of all hosts in shard #j since
// we sorted m_hosts by shardId
m_shards[i] = &m_hosts[j];
}