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ktserver.cc
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ktserver.cc
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/*************************************************************************************************
* A handy cache/storage server
* Copyright (C) 2009-2012 FAL Labs
* This file is part of Kyoto Tycoon.
* This program is free software: you can redistribute it and/or modify it under the terms of
* the GNU General Public License as published by the Free Software Foundation, either version
* 3 of the License, or any later version.
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
* You should have received a copy of the GNU General Public License along with this program.
* If not, see <http://www.gnu.org/licenses/>.
*************************************************************************************************/
#include "cmdcommon.h"
enum { // enumeration for operation counting
CNTSET, // setting operations
CNTSETMISS, // misses of setting operations
CNTREMOVE, // removing operations
CNTREMOVEMISS, // misses of removing operations
CNTGET, // getting operations
CNTGETMISS, // misses of getting operations
CNTSCRIPT, // scripting operations
CNTMISC // miscellaneous operations
};
typedef uint64_t OpCount[CNTMISC+1]; // counters per thread
// global variables
const char* g_progname; // program name
int32_t g_procid; // process ID number
double g_starttime; // start time
bool g_daemon; // daemon flag
kt::RPCServer* g_serv; // running RPC server
bool g_restart; // restart flag
// function prototypes
int main(int argc, char** argv);
static void usage();
static void killserver(int signum);
static int32_t run(int argc, char** argv);
static int32_t proc(const std::vector<std::string>& dbpaths,
const char* host, int32_t port, double tout, int32_t thnum,
const char* logpath, uint32_t logkinds,
const char* ulogpath, int64_t ulim, double uasi,
int32_t sid, int32_t omode, double asi, bool ash,
const char* bgspath, double bgsi, kc::Compressor* bgscomp, bool dmn,
const char* pidpath, const char* cmdpath, const char* scrpath,
const char* mhost, int32_t mport, const char* rtspath, double riv,
const char* plsvpath, const char* plsvex, const char* pldbpath);
static bool dosnapshot(const char* bgspath, kc::Compressor* bgscomp,
kt::TimedDB* dbs, int32_t dbnum, kt::RPCServer* serv);
// logger implementation
class Logger : public kt::RPCServer::Logger {
public:
// constructor
explicit Logger() : strm_(NULL), lock_() {}
// destructor
~Logger() {
if (strm_) close();
}
// open the stream
bool open(const char* path) {
if (strm_) return false;
if (path && *path != '\0' && std::strcmp(path, "-")) {
std::ofstream* strm = new std::ofstream;
strm->open(path, std::ios_base::out | std::ios_base::binary | std::ios_base::app);
if (!*strm) {
delete strm;
return false;
}
strm_ = strm;
} else {
strm_ = &std::cout;
}
return true;
}
// close the stream
void close() {
if (!strm_) return;
if (strm_ != &std::cout) delete strm_;
strm_ = NULL;
}
// process a log message.
void log(Kind kind, const char* message) {
if (!strm_) return;
char date[48];
kt::datestrwww(kc::nan(), kc::INT32MAX, 6, date);
const char* kstr = "MISC";
switch (kind) {
case kt::RPCServer::Logger::DEBUG: kstr = "DEBUG"; break;
case kt::RPCServer::Logger::INFO: kstr = "INFO"; break;
case kt::RPCServer::Logger::SYSTEM: kstr = "SYSTEM"; break;
case kt::RPCServer::Logger::ERROR: kstr = "ERROR"; break;
}
lock_.lock();
*strm_ << date << ": [" << kstr << "]: " << message << "\n";
strm_->flush();
lock_.unlock();
}
private:
std::ostream* strm_;
kc::Mutex lock_;
};
// database logger implementation
class DBLogger : public kc::BasicDB::Logger {
public:
// constructor
explicit DBLogger(::Logger* logger, uint32_t kinds) : logger_(logger), kinds_(kinds) {}
// process a log message.
void log(const char* file, int32_t line, const char* func,
kc::BasicDB::Logger::Kind kind, const char* message) {
kt::RPCServer::Logger::Kind rkind;
switch (kind) {
default: rkind = kt::RPCServer::Logger::DEBUG; break;
case kc::BasicDB::Logger::INFO: rkind = kt::RPCServer::Logger::INFO; break;
case kc::BasicDB::Logger::WARN: rkind = kt::RPCServer::Logger::SYSTEM; break;
case kc::BasicDB::Logger::ERROR: rkind = kt::RPCServer::Logger::ERROR; break;
}
if (!(rkind & kinds_)) return;
std::string lmsg;
kc::strprintf(&lmsg, "[DB]: %s", message);
logger_->log(rkind, lmsg.c_str());
}
private:
::Logger* logger_;
uint32_t kinds_;
};
// replication slave implemantation
class Slave : public kc::Thread {
friend class Worker;
public:
// constructor
explicit Slave(uint16_t sid, const char* rtspath, const char* host, int32_t port, double riv,
kt::RPCServer* serv, kt::TimedDB* dbs, int32_t dbnum,
kt::UpdateLogger* ulog, DBUpdateLogger* ulogdbs) :
lock_(), sid_(sid), rtspath_(rtspath), host_(""), port_(port), riv_(riv),
serv_(serv), dbs_(dbs), dbnum_(dbnum), ulog_(ulog), ulogdbs_(ulogdbs),
wrts_(kc::UINT64MAX), rts_(0), alive_(true), hup_(false) {
if (host) host_ = host;
}
// stop the slave
void stop() {
alive_ = false;
}
// restart the slave
void restart() {
hup_ = true;
}
// set the configuration of the master
void set_master(const std::string& host, int32_t port, uint64_t ts, double iv) {
kc::ScopedSpinLock lock(&lock_);
host_ = host;
port_ = port;
wrts_ = ts;
if (iv >= 0) riv_ = iv;
}
// get the host name of the master
std::string host() {
kc::ScopedSpinLock lock(&lock_);
return host_;
}
// get the port number name of the master
int32_t port() {
kc::ScopedSpinLock lock(&lock_);
return port_;
}
// get the replication time stamp
uint64_t rts() {
return rts_;
}
// get the replication interval
double riv() {
return riv_;
}
private:
static const int32_t DUMMYFREQ = 256;
static const size_t RTSFILESIZ = 21;
// perform replication
void run(void) {
if (!rtspath_) return;
kc::File rtsfile;
if (!rtsfile.open(rtspath_, kc::File::OWRITER | kc::File::OCREATE, kc::NUMBUFSIZ) ||
!rtsfile.truncate(RTSFILESIZ)) {
serv_->log(Logger::ERROR, "opening the RTS file failed: path=%s", rtspath_);
return;
}
rts_ = read_rts(&rtsfile);
write_rts(&rtsfile, rts_);
kc::Thread::sleep(0.2);
bool deferred = false;
while (true) {
lock_.lock();
std::string host = host_;
int32_t port = port_;
uint64_t wrts = wrts_;
lock_.unlock();
if (!host.empty()) {
if (wrts != kc::UINT64MAX) {
lock_.lock();
wrts_ = kc::UINT64MAX;
rts_ = wrts;
write_rts(&rtsfile, rts_);
lock_.unlock();
}
kt::ReplicationClient rc;
if (rc.open(host, port, 60, rts_, sid_)) {
serv_->log(Logger::SYSTEM, "replication started: host=%s port=%d rts=%llu",
host.c_str(), port, (unsigned long long)rts_);
hup_ = false;
double rivsum = 0;
while (alive_ && !hup_ && rc.alive()) {
size_t msiz;
uint64_t mts;
char* mbuf = rc.read(&msiz, &mts);
if (mbuf) {
if (msiz > 0) {
size_t rsiz;
uint16_t rsid, rdbid;
const char* rbuf = DBUpdateLogger::parse(mbuf, msiz, &rsiz, &rsid, &rdbid);
if (rbuf && rsid != sid_ && rdbid < dbnum_) {
kt::TimedDB* db = dbs_ + rdbid;
DBUpdateLogger* ulogdb = ulogdbs_ ? ulogdbs_ + rdbid : NULL;
if (ulogdb) ulogdb->set_rsid(rsid);
if (!db->recover(rbuf, rsiz)) {
const kc::BasicDB::Error& e = db->error();
serv_->log(Logger::ERROR, "recovering a database failed: %s: %s",
e.name(), e.message());
}
if (ulogdb) ulogdb->clear_rsid();
}
rivsum += riv_;
} else {
rivsum += riv_ * DUMMYFREQ / 4;
}
delete[] mbuf;
while (rivsum > 100 && alive_ && !hup_ && rc.alive()) {
kc::Thread::sleep(0.1);
rivsum -= 100;
}
}
if (mts > rts_) rts_ = mts;
}
rc.close();
serv_->log(Logger::SYSTEM, "replication finished: host=%s port=%d",
host.c_str(), port);
write_rts(&rtsfile, rts_);
deferred = false;
} else {
if (!deferred) serv_->log(Logger::SYSTEM, "replication was deferred: host=%s port=%d",
host.c_str(), port);
deferred = true;
}
}
if (alive_) {
kc::Thread::sleep(1);
} else {
break;
}
}
if (!rtsfile.close()) serv_->log(Logger::ERROR, "closing the RTS file failed");
}
// read the replication time stamp
uint64_t read_rts(kc::File* file) {
char buf[RTSFILESIZ];
file->read_fast(0, buf, RTSFILESIZ);
buf[sizeof(buf)-1] = '\0';
return kc::atoi(buf);
}
// write the replication time stamp
void write_rts(kc::File* file, uint64_t rts) {
char buf[kc::NUMBUFSIZ];
std::sprintf(buf, "%020llu\n", (unsigned long long)rts);
if (!file->write_fast(0, buf, RTSFILESIZ))
serv_->log(Logger::SYSTEM, "writing the time stamp failed");
}
kc::SpinLock lock_;
const uint16_t sid_;
const char* const rtspath_;
std::string host_;
int32_t port_;
double riv_;
kt::RPCServer* const serv_;
kt::TimedDB* const dbs_;
const int32_t dbnum_;
kt::UpdateLogger* const ulog_;
DBUpdateLogger* const ulogdbs_;
uint64_t wrts_;
uint64_t rts_;
bool alive_;
bool hup_;
};
// plug-in server driver
class PlugInDriver : public kc::Thread {
public:
// constructor
explicit PlugInDriver(kt::PluggableServer* serv) : serv_(serv), error_(false) {}
// get the error flag
bool error() {
return error_;
}
private:
// perform service
void run(void) {
kc::Thread::sleep(0.4);
if (serv_->start()) {
if (!serv_->finish()) error_ = true;
} else {
error_ = true;
}
}
kt::PluggableServer* serv_;
bool error_;
};
// worker implementation
class Worker : public kt::RPCServer::Worker {
private:
class SLS;
typedef kt::RPCClient::ReturnValue RV;
public:
// constructor
explicit Worker(int32_t thnum, kc::CondMap* condmap, kt::TimedDB* dbs, int32_t dbnum,
const std::map<std::string, int32_t>& dbmap, int32_t omode,
double asi, bool ash, const char* bgspath, double bgsi,
kc::Compressor* bgscomp, kt::UpdateLogger* ulog, DBUpdateLogger* ulogdbs,
const char* cmdpath, ScriptProcessor* scrprocs, OpCount* opcounts) :
thnum_(thnum), condmap_(condmap), dbs_(dbs), dbnum_(dbnum), dbmap_(dbmap),
omode_(omode), asi_(asi), ash_(ash), bgspath_(bgspath), bgsi_(bgsi), bgscomp_(bgscomp),
ulog_(ulog), ulogdbs_(ulogdbs), cmdpath_(cmdpath), scrprocs_(scrprocs),
opcounts_(opcounts), idlecnt_(0), asnext_(0), bgsnext_(0), slave_(NULL) {
asnext_ = kc::time() + asi_;
bgsnext_ = kc::time() + bgsi_;
}
// set miscellaneous configuration
void set_misc_conf(Slave* slave) {
slave_ = slave;
}
private:
// process each request of RPC.
RV process(kt::RPCServer* serv, kt::RPCServer::Session* sess, const std::string& name,
const std::map<std::string, std::string>& inmap,
std::map<std::string, std::string>& outmap) {
size_t rsiz;
const char* rp = kt::strmapget(inmap, "WAIT", &rsiz);
if (rp) {
std::string condname(rp, rsiz);
rp = kt::strmapget(inmap, "WAITTIME");
double wsec = rp ? kc::atof(rp) : 0.0;
if (wsec <= 0) wsec = DEFTOUT;
kt::ThreadedServer* thserv = serv->reveal_core()->reveal_core();
if (!condmap_->wait(condname, wsec) || thserv->aborted()) {
set_message(outmap, "ERROR", "the condition timed out");
return kt::RPCClient::RVETIMEOUT;
}
}
int32_t dbidx = 0;
rp = kt::strmapget(inmap, "DB");
if (rp && *rp != '\0') {
dbidx = -1;
if (*rp >= '0' && *rp <= '9') {
dbidx = kc::atoi(rp);
} else {
std::map<std::string, int32_t>::const_iterator it = dbmap_.find(rp);
if (it != dbmap_.end()) dbidx = it->second;
}
}
kt::TimedDB* db = dbidx >= 0 && dbidx < dbnum_ ? dbs_ + dbidx : NULL;
int64_t curid = -1;
rp = kt::strmapget(inmap, "CUR");
if (rp && *rp >= '0' && *rp <= '9') curid = kc::atoi(rp);
kt::TimedDB::Cursor* cur = NULL;
if (curid >= 0) {
SLS* sls = SLS::create(sess);
std::map<int64_t, kt::TimedDB::Cursor*>::iterator it = sls->curs_.find(curid);
if (it == sls->curs_.end()) {
if (db) {
cur = db->cursor();
sls->curs_[curid] = cur;
}
} else {
cur = it->second;
if (name == "cur_delete") {
sls->curs_.erase(curid);
delete cur;
return kt::RPCClient::RVSUCCESS;
}
}
}
RV rv;
if (name == "void") {
rv = do_void(serv, sess, inmap, outmap);
} else if (name == "echo") {
rv = do_echo(serv, sess, inmap, outmap);
} else if (name == "report") {
rv = do_report(serv, sess, inmap, outmap);
} else if (name == "play_script") {
rv = do_play_script(serv, sess, inmap, outmap);
} else if (name == "tune_replication") {
rv = do_tune_replication(serv, sess, inmap, outmap);
} else if (name == "ulog_list") {
rv = do_ulog_list(serv, sess, inmap, outmap);
} else if (name == "ulog_remove") {
rv = do_ulog_remove(serv, sess, inmap, outmap);
} else if (name == "status") {
rv = do_status(serv, sess, db, inmap, outmap);
} else if (name == "clear") {
rv = do_clear(serv, sess, db, inmap, outmap);
} else if (name == "synchronize") {
rv = do_synchronize(serv, sess, db, inmap, outmap);
} else if (name == "set") {
rv = do_set(serv, sess, db, inmap, outmap);
} else if (name == "add") {
rv = do_add(serv, sess, db, inmap, outmap);
} else if (name == "replace") {
rv = do_replace(serv, sess, db, inmap, outmap);
} else if (name == "append") {
rv = do_append(serv, sess, db, inmap, outmap);
} else if (name == "increment") {
rv = do_increment(serv, sess, db, inmap, outmap);
} else if (name == "increment_double") {
rv = do_increment_double(serv, sess, db, inmap, outmap);
} else if (name == "cas") {
rv = do_cas(serv, sess, db, inmap, outmap);
} else if (name == "remove") {
rv = do_remove(serv, sess, db, inmap, outmap);
} else if (name == "get") {
rv = do_get(serv, sess, db, inmap, outmap);
} else if (name == "check") {
rv = do_check(serv, sess, db, inmap, outmap);
} else if (name == "seize") {
rv = do_seize(serv, sess, db, inmap, outmap);
} else if (name == "set_bulk") {
rv = do_set_bulk(serv, sess, db, inmap, outmap);
} else if (name == "remove_bulk") {
rv = do_remove_bulk(serv, sess, db, inmap, outmap);
} else if (name == "get_bulk") {
rv = do_get_bulk(serv, sess, db, inmap, outmap);
} else if (name == "vacuum") {
rv = do_vacuum(serv, sess, db, inmap, outmap);
} else if (name == "match_prefix") {
rv = do_match_prefix(serv, sess, db, inmap, outmap);
} else if (name == "match_regex") {
rv = do_match_regex(serv, sess, db, inmap, outmap);
} else if (name == "match_similar") {
rv = do_match_similar(serv, sess, db, inmap, outmap);
} else if (name == "cur_jump") {
rv = do_cur_jump(serv, sess, cur, inmap, outmap);
} else if (name == "cur_jump_back") {
rv = do_cur_jump_back(serv, sess, cur, inmap, outmap);
} else if (name == "cur_step") {
rv = do_cur_step(serv, sess, cur, inmap, outmap);
} else if (name == "cur_step_back") {
rv = do_cur_step_back(serv, sess, cur, inmap, outmap);
} else if (name == "cur_set_value") {
rv = do_cur_set_value(serv, sess, cur, inmap, outmap);
} else if (name == "cur_remove") {
rv = do_cur_remove(serv, sess, cur, inmap, outmap);
} else if (name == "cur_get_key") {
rv = do_cur_get_key(serv, sess, cur, inmap, outmap);
} else if (name == "cur_get_value") {
rv = do_cur_get_value(serv, sess, cur, inmap, outmap);
} else if (name == "cur_get") {
rv = do_cur_get(serv, sess, cur, inmap, outmap);
} else if (name == "cur_seize") {
rv = do_cur_seize(serv, sess, cur, inmap, outmap);
} else {
set_message(outmap, "ERROR", "not implemented: %s", name.c_str());
rv = kt::RPCClient::RVENOIMPL;
}
rp = kt::strmapget(inmap, "SIGNAL", &rsiz);
if (rp) {
std::string condname(rp, rsiz);
rp = kt::strmapget(inmap, "SIGNALBROAD");
bool broad = rp ? true : false;
size_t wnum = broad ? condmap_->broadcast(condname) : condmap_->signal(condname);
set_message(outmap, "SIGNALED", "%lld", (long long)wnum);
}
return rv;
}
// process each request of the others.
int32_t process(kt::HTTPServer* serv, kt::HTTPServer::Session* sess,
const std::string& path, kt::HTTPClient::Method method,
const std::map<std::string, std::string>& reqheads,
const std::string& reqbody,
std::map<std::string, std::string>& resheads,
std::string& resbody,
const std::map<std::string, std::string>& misc) {
const char* pstr = path.c_str();
if (*pstr == '/') pstr++;
int32_t dbidx = 0;
const char* rp = std::strchr(pstr, '/');
if (rp) {
std::string dbexpr(pstr, rp - pstr);
pstr = rp + 1;
if (*pstr == '/') pstr++;
size_t desiz;
char* destr = kc::urldecode(dbexpr.c_str(), &desiz);
if (*destr != '\0') {
dbidx = -1;
if (*destr >= '0' && *destr <= '9') {
dbidx = kc::atoi(destr);
} else {
std::map<std::string, int32_t>::const_iterator it = dbmap_.find(destr);
if (it != dbmap_.end()) dbidx = it->second;
}
}
delete[] destr;
}
if (dbidx < 0 || dbidx >= dbnum_) {
resbody.append("no such database\n");
return 400;
}
kt::TimedDB* db = dbs_ + dbidx;
size_t ksiz;
char* kbuf = kc::urldecode(pstr, &ksiz);
int32_t code;
switch (method) {
case kt::HTTPClient::MGET: {
code = do_rest_get(serv, sess, db, kbuf, ksiz,
reqheads, reqbody, resheads, resbody, misc);
break;
}
case kt::HTTPClient::MHEAD: {
code = do_rest_head(serv, sess, db, kbuf, ksiz,
reqheads, reqbody, resheads, resbody, misc);
break;
}
case kt::HTTPClient::MPUT: {
code = do_rest_put(serv, sess, db, kbuf, ksiz,
reqheads, reqbody, resheads, resbody, misc);
break;
}
case kt::HTTPClient::MDELETE: {
code = do_rest_delete(serv, sess, db, kbuf, ksiz,
reqheads, reqbody, resheads, resbody, misc);
break;
}
default: {
code = 501;
break;
}
}
delete[] kbuf;
return code;
}
// process each binary request
bool process_binary(kt::ThreadedServer* serv, kt::ThreadedServer::Session* sess) {
int32_t magic = sess->receive_byte();
const char* cmd;
bool rv;
switch (magic) {
case kt::RemoteDB::BMREPLICATION: {
cmd = "bin_replication";
rv = do_bin_replication(serv, sess);
break;
}
case kt::RemoteDB::BMPLAYSCRIPT: {
cmd = "bin_play_script";
rv = do_bin_play_script(serv, sess);
break;
}
case kt::RemoteDB::BMSETBULK: {
cmd = "bin_set_bulk";
rv = do_bin_set_bulk(serv, sess);
break;
}
case kt::RemoteDB::BMREMOVEBULK: {
cmd = "bin_remove_bulk";
rv = do_bin_remove_bulk(serv, sess);
break;
}
case kt::RemoteDB::BMGETBULK: {
cmd = "bin_get_bulk";
rv = do_bin_get_bulk(serv, sess);
break;
}
default: {
cmd = "bin_unknown";
rv = false;
break;
}
}
std::string expr = sess->expression();
serv->log(kt::ThreadedServer::Logger::INFO, "(%s): %s: %d", expr.c_str(), cmd, rv);
return rv;
}
// process each idle event
void process_idle(kt::RPCServer* serv) {
if (omode_ & kc::BasicDB::OWRITER) {
int32_t dbidx = idlecnt_++ % dbnum_;
kt::TimedDB* db = dbs_ + dbidx;
kt::ThreadedServer* thserv = serv->reveal_core()->reveal_core();
for (int32_t i = 0; i < 4; i++) {
if (thserv->task_count() > 0) break;
if (!db->vacuum(2)) {
const kc::BasicDB::Error& e = db->error();
log_db_error(serv, e);
break;
}
kc::Thread::yield();
}
}
}
// process each timer event
void process_timer(kt::RPCServer* serv) {
if (asi_ > 0 && (omode_ & kc::BasicDB::OWRITER) && kc::time() >= asnext_) {
serv->log(Logger::INFO, "synchronizing databases");
for (int32_t i = 0; i < dbnum_; i++) {
kt::TimedDB* db = dbs_ + i;
if (!db->synchronize(ash_)) {
const kc::BasicDB::Error& e = db->error();
log_db_error(serv, e);
break;
}
kc::Thread::yield();
}
asnext_ = kc::time() + asi_;
}
if (bgspath_ && bgsi_ > 0 && kc::time() >= bgsnext_) {
serv->log(Logger::INFO, "snapshotting databases");
dosnapshot(bgspath_, bgscomp_, dbs_, dbnum_, serv);
bgsnext_ = kc::time() + bgsi_;
}
}
// process the starting event
void process_start(kt::RPCServer* serv) {
kt::maskthreadsignal();
}
// set the error message
void set_message(std::map<std::string, std::string>& outmap, const char* key,
const char* format, ...) {
std::string message;
va_list ap;
va_start(ap, format);
kc::vstrprintf(&message, format, ap);
va_end(ap);
outmap[key] = message;
}
// set the database error message
void set_db_error(std::map<std::string, std::string>& outmap, const kc::BasicDB::Error& e) {
set_message(outmap, "ERROR", "DB: %d: %s: %s", e.code(), e.name(), e.message());
}
// log the database error message
void log_db_error(kt::RPCServer* serv, const kc::BasicDB::Error& e) {
log_db_error(serv->reveal_core(), e);
}
// log the database error message
void log_db_error(kt::HTTPServer* serv, const kc::BasicDB::Error& e) {
serv->log(Logger::ERROR, "database error: %d: %s: %s", e.code(), e.name(), e.message());
}
// process the void procedure
RV do_void(kt::RPCServer* serv, kt::RPCServer::Session* sess,
const std::map<std::string, std::string>& inmap,
std::map<std::string, std::string>& outmap) {
return kt::RPCClient::RVSUCCESS;
}
// process the echo procedure
RV do_echo(kt::RPCServer* serv, kt::RPCServer::Session* sess,
const std::map<std::string, std::string>& inmap,
std::map<std::string, std::string>& outmap) {
outmap.insert(inmap.begin(), inmap.end());
return kt::RPCClient::RVSUCCESS;
}
// process the report procedure
RV do_report(kt::RPCServer* serv, kt::RPCServer::Session* sess,
const std::map<std::string, std::string>& inmap,
std::map<std::string, std::string>& outmap) {
int64_t totalcount = 0;
int64_t totalsize = 0;
for (int32_t i = 0; i < dbnum_; i++) {
int64_t count = dbs_[i].count();
int64_t size = dbs_[i].size();
std::string key;
kc::strprintf(&key, "db_%d", i);
set_message(outmap, key.c_str(), "count=%lld size=%lld path=%s",
(long long)count, (long long)size, dbs_[i].path().c_str());
totalcount += count;
totalsize += size;
}
set_message(outmap, "db_total_count", "%lld", (long long)totalcount);
set_message(outmap, "db_total_size", "%lld", (long long)totalsize);
kt::ThreadedServer* thserv = serv->reveal_core()->reveal_core();
set_message(outmap, "serv_conn_count", "%lld", (long long)thserv->connection_count());
set_message(outmap, "serv_task_count", "%lld", (long long)thserv->task_count());
set_message(outmap, "serv_thread_count", "%lld", (long long)thnum_);
double ctime = kc::time();
set_message(outmap, "serv_current_time", "%.6f", ctime);
set_message(outmap, "serv_running_term", "%.6f", ctime - g_starttime);
set_message(outmap, "serv_proc_id", "%d", g_procid);
std::map<std::string, std::string> sysinfo;
kc::getsysinfo(&sysinfo);
std::map<std::string, std::string>::iterator it = sysinfo.begin();
std::map<std::string, std::string>::iterator itend = sysinfo.end();
while (it != itend) {
std::string key;
kc::strprintf(&key, "sys_%s", it->first.c_str());
set_message(outmap, key.c_str(), it->second.c_str());
++it;
}
const std::string& mhost = slave_->host();
if (!mhost.empty()) {
set_message(outmap, "repl_master_host", "%s", mhost.c_str());
set_message(outmap, "repl_master_port", "%d", slave_->port());
uint64_t rts = slave_->rts();
set_message(outmap, "repl_timestamp", "%llu", (unsigned long long)rts);
set_message(outmap, "repl_interval", "%.6f", slave_->riv());
uint64_t cc = kt::UpdateLogger::clock_pure();
uint64_t delay = cc > rts ? cc - rts : 0;
set_message(outmap, "repl_delay", "%.6f", delay / 1000000000.0);
}
OpCount ocsum;
for (int32_t i = 0; i <= CNTMISC; i++) {
ocsum[i] = 0;
}
for (int32_t i = 0; i < thnum_; i++) {
for (int32_t j = 0; j <= CNTMISC; j++) {
ocsum[j] += opcounts_[i][j];
}
}
set_message(outmap, "cnt_set", "%llu", (unsigned long long)ocsum[CNTSET]);
set_message(outmap, "cnt_set_misses", "%llu", (unsigned long long)ocsum[CNTSETMISS]);
set_message(outmap, "cnt_remove", "%llu", (unsigned long long)ocsum[CNTREMOVE]);
set_message(outmap, "cnt_remove_misses", "%llu", (unsigned long long)ocsum[CNTREMOVEMISS]);
set_message(outmap, "cnt_get", "%llu", (unsigned long long)ocsum[CNTGET]);
set_message(outmap, "cnt_get_misses", "%llu", (unsigned long long)ocsum[CNTGETMISS]);
set_message(outmap, "cnt_script", "%llu", (unsigned long long)ocsum[CNTSCRIPT]);
set_message(outmap, "cnt_misc", "%llu", (unsigned long long)ocsum[CNTMISC]);
set_message(outmap, "conf_kt_version", "%s (%d.%d)", kt::VERSION, kt::LIBVER, kt::LIBREV);
set_message(outmap, "conf_kt_features", "%s", kt::FEATURES);
set_message(outmap, "conf_kc_version", "%s (%d.%d)", kc::VERSION, kc::LIBVER, kc::LIBREV);
set_message(outmap, "conf_kc_features", "%s", kc::FEATURES);
set_message(outmap, "conf_os_name", "%s", kc::OSNAME);
return kt::RPCClient::RVSUCCESS;
}
// process the play_script procedure
RV do_play_script(kt::RPCServer* serv, kt::RPCServer::Session* sess,
const std::map<std::string, std::string>& inmap,
std::map<std::string, std::string>& outmap) {
uint32_t thid = sess->thread_id();
if (!scrprocs_) {
set_message(outmap, "ERROR", "the scripting extention is disabled");
return kt::RPCClient::RVENOIMPL;
}
ScriptProcessor* scrproc = scrprocs_ + thid;
const char* nstr = kt::strmapget(inmap, "name");
if (!nstr || *nstr == '\0' || !kt::strisalnum(nstr)) {
set_message(outmap, "ERROR", "invalid parameters");
return kt::RPCClient::RVEINVALID;
}
std::map<std::string, std::string> scrinmap;
std::map<std::string, std::string>::const_iterator it = inmap.begin();
std::map<std::string, std::string>::const_iterator itend = inmap.end();
while (it != itend) {
const char* kbuf = it->first.data();
size_t ksiz = it->first.size();
if (ksiz > 0 && *kbuf == '_') {
std::string key(kbuf + 1, ksiz - 1);
scrinmap[key] = it->second;
}
++it;
}
opcounts_[thid][CNTSCRIPT]++;
std::map<std::string, std::string> scroutmap;
RV rv = scrproc->call(nstr, scrinmap, scroutmap);
if (rv == kt::RPCClient::RVSUCCESS) {
it = scroutmap.begin();
itend = scroutmap.end();
while (it != itend) {
std::string key = "_";
key.append(it->first);
outmap[key] = it->second;
++it;
}
} else if (rv == kt::RPCClient::RVENOIMPL) {
set_message(outmap, "ERROR", "no such scripting procedure");
} else {
set_message(outmap, "ERROR", "the scripting procedure failed");
}
return rv;
}
// process the tune_replication procedure
RV do_tune_replication(kt::RPCServer* serv, kt::RPCServer::Session* sess,
const std::map<std::string, std::string>& inmap,
std::map<std::string, std::string>& outmap) {
if (!slave_->rtspath_) {
set_message(outmap, "ERROR", "the RTS file is not set");
return kt::RPCClient::RVENOIMPL;
}
const char* host = kt::strmapget(inmap, "host");
if (!host) host = "";
const char* rp = kt::strmapget(inmap, "port");
int32_t port = rp ? kc::atoi(rp) : 0;
if (port < 1) port = kt::DEFPORT;
rp = kt::strmapget(inmap, "ts");
uint64_t ts = kc::UINT64MAX;
if (rp) {
if (!std::strcmp(rp, "now")) {
ts = kt::UpdateLogger::clock_pure();
} else {
ts = kc::atoi(rp);
}
}
rp = kt::strmapget(inmap, "iv");
double iv = rp ? kc::atof(rp) : -1;
char tsstr[kc::NUMBUFSIZ];
if (ts == kc::UINT64MAX) {
std::sprintf(tsstr, "*");
} else {
std::sprintf(tsstr, "%llu", (unsigned long long)ts);
}
char ivstr[kc::NUMBUFSIZ];
if (iv < 0) {
std::sprintf(ivstr, "*");
} else {
std::sprintf(ivstr, "%.6f", iv);
}
serv->log(Logger::SYSTEM, "replication setting was modified: host=%s port=%d ts=%s iv=%s",
host, port, tsstr, ivstr);
slave_->set_master(host, port, ts, iv);
slave_->restart();
return kt::RPCClient::RVSUCCESS;
}
// process the ulog_list procedure
RV do_ulog_list(kt::RPCServer* serv, kt::RPCServer::Session* sess,
const std::map<std::string, std::string>& inmap,
std::map<std::string, std::string>& outmap) {
if (!ulog_) {
set_message(outmap, "ERROR", "no update log allows no replication");
return kt::RPCClient::RVEINVALID;
}
std::vector<kt::UpdateLogger::FileStatus> files;
ulog_->list_files(&files);
std::vector<kt::UpdateLogger::FileStatus>::iterator it = files.begin();
std::vector<kt::UpdateLogger::FileStatus>::iterator itend = files.end();
while (it != itend) {
set_message(outmap, it->path.c_str(), "%llu:%llu",
(unsigned long long)it->size, (unsigned long long)it->ts);
++it;
}
return kt::RPCClient::RVSUCCESS;
}
// process the ulog_remove procedure
RV do_ulog_remove(kt::RPCServer* serv, kt::RPCServer::Session* sess,
const std::map<std::string, std::string>& inmap,
std::map<std::string, std::string>& outmap) {
if (!ulog_) {
set_message(outmap, "ERROR", "no update log allows no replication");
return kt::RPCClient::RVEINVALID;
}
const char* rp = kt::strmapget(inmap, "ts");
uint64_t ts = kc::UINT64MAX;
if (rp) {
if (!std::strcmp(rp, "now")) {
ts = kt::UpdateLogger::clock_pure();
} else {
ts = kc::atoi(rp);
}
}
bool err = false;
std::vector<kt::UpdateLogger::FileStatus> files;
ulog_->list_files(&files);
std::vector<kt::UpdateLogger::FileStatus>::iterator it = files.begin();
std::vector<kt::UpdateLogger::FileStatus>::iterator itend = files.end();
if (it != itend) itend--;
while (it != itend) {
if (it->ts <= ts && !kc::File::remove(it->path)) {
set_message(outmap, "ERROR", "removing a file failed: %s", it->path.c_str());
serv->log(Logger::ERROR, "removing a file failed: %s", it->path.c_str());
err = true;
}
++it;
}
return err ? kt::RPCClient::RVEINTERNAL : kt::RPCClient::RVSUCCESS;
}
// process the status procedure
RV do_status(kt::RPCServer* serv, kt::RPCServer::Session* sess,
kt::TimedDB* db,
const std::map<std::string, std::string>& inmap,
std::map<std::string, std::string>& outmap) {
uint32_t thid = sess->thread_id();
if (!db) {
set_message(outmap, "ERROR", "no such database");
return kt::RPCClient::RVEINVALID;
}
RV rv;
opcounts_[thid][CNTMISC]++;
std::map<std::string, std::string> status;
if (db->status(&status)) {
rv = kt::RPCClient::RVSUCCESS;
outmap.insert(status.begin(), status.end());
} else {
const kc::BasicDB::Error& e = db->error();
set_db_error(outmap, e);
log_db_error(serv, e);
rv = kt::RPCClient::RVEINTERNAL;
}
return rv;
}
// process the clear procedure
RV do_clear(kt::RPCServer* serv, kt::RPCServer::Session* sess,
kt::TimedDB* db,
const std::map<std::string, std::string>& inmap,
std::map<std::string, std::string>& outmap) {
uint32_t thid = sess->thread_id();
if (!db) {
set_message(outmap, "ERROR", "no such database");
return kt::RPCClient::RVEINVALID;
}
RV rv;
opcounts_[thid][CNTMISC]++;
if (db->clear()) {
rv = kt::RPCClient::RVSUCCESS;
} else {
const kc::BasicDB::Error& e = db->error();
set_db_error(outmap, e);
log_db_error(serv, e);
rv = kt::RPCClient::RVEINTERNAL;
}
return rv;
}
// process the synchronize procedure
RV do_synchronize(kt::RPCServer* serv, kt::RPCServer::Session* sess,
kt::TimedDB* db,
const std::map<std::string, std::string>& inmap,
std::map<std::string, std::string>& outmap) {
uint32_t thid = sess->thread_id();
if (!db) {
set_message(outmap, "ERROR", "no such database");
return kt::RPCClient::RVEINVALID;
}
const char* rp = kt::strmapget(inmap, "hard");
bool hard = rp ? true : false;
rp = kt::strmapget(inmap, "command");
std::string command = rp ? rp : "";
class Visitor : public kc::BasicDB::FileProcessor {
public:
Visitor(kt::RPCServer* serv, Worker* worker, const std::string& command) :
serv_(serv), worker_(worker), command_(command) {}
private:
bool process(const std::string& path, int64_t count, int64_t size) {
if (command_.size() < 1) return true;
const char* cmd = command_.c_str();
if (std::strchr(cmd, kc::File::PATHCHR) || !std::strcmp(cmd, kc::File::CDIRSTR) ||
!std::strcmp(cmd, kc::File::PDIRSTR)) {
serv_->log(Logger::INFO, "invalid command name: %s", cmd);
return false;
}
std::string cmdpath;
kc::strprintf(&cmdpath, "%s%c%s", worker_->cmdpath_, kc::File::PATHCHR, cmd);
std::vector<std::string> args;
args.push_back(cmdpath);
args.push_back(path);
std::string tsstr;
uint64_t cc = worker_->ulog_ ? worker_->ulog_->clock() : kt::UpdateLogger::clock_pure();
if (!worker_->slave_->host().empty()) {
uint64_t rts = worker_->slave_->rts();
if (rts < cc) cc = rts;
}
kc::strprintf(&tsstr, "%020llu", (unsigned long long)cc);
args.push_back(tsstr);
serv_->log(Logger::SYSTEM, "executing: %s \"%s\"", cmd, path.c_str());
if (kt::executecommand(args) != 0) {
serv_->log(Logger::ERROR, "execution failed: %s \"%s\"", cmd, path.c_str());
return false;
}
return true;
}
kt::RPCServer* serv_;
Worker* worker_;
std::string command_;
};
Visitor visitor(serv, this, command);
RV rv;
opcounts_[thid][CNTMISC]++;
if (db->synchronize(hard, &visitor)) {
rv = kt::RPCClient::RVSUCCESS;
} else {
const kc::BasicDB::Error& e = db->error();
set_db_error(outmap, e);
log_db_error(serv, e);
rv = kt::RPCClient::RVEINTERNAL;
}
return rv;
}
// process the set procedure
RV do_set(kt::RPCServer* serv, kt::RPCServer::Session* sess,