pike.git/lib/modules/Sql.pmod/pgsql_util.pmod:b39dd78c0b94f12b9d2ae40c0f4cbb8a95a56134

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2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 /* * Some pgsql utility functions. * They are kept here to avoid circular references. */ //! The pgsql backend, shared between all connection instances. //! It runs even in non-callback mode in a separate thread and makes sure //! that communication with the database is real-time and event driven //! at all times. //! //! @note //! Callbacks running from this backend directly determine the latency //! in reacting to communication with the database server; so it //! would be prudent not to block in these callbacks. #pike __REAL_VERSION__ #pragma dynamic_dot #require constant(Thread.Thread) #include "pgsql.h" #define PORTALINIT 0 // Portal states #define PARSING 1 #define BOUND 2 #define COMMITTED 3 #define COPYINPROGRESS 4 #define CLOSING 5 #define CLOSED 6 #define PURGED 7 #define NOERROR 0 // Error states networkparser #define PROTOCOLERROR 1 #define PROTOCOLUNSUPPORTED 2 #define LOSTERROR "Database connection lost" #if PG_DEADLOCK_SENTINEL private multiset mutexes = set_weak_flag((<>), Pike.WEAK); private int deadlockseq; private class MUTEX { inherit Thread.Mutex; private Thread.Thread sentinelthread; private void dump_lockgraph(Thread.Thread curthread) { sleep(PG_DEADLOCK_SENTINEL); String.Buffer buf = String.Buffer(); buf.add("\n{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{\n"); buf.sprintf("Deadlock detected at\n%s\n", describe_backtrace(curthread.backtrace(), -1)); foreach(mutexes; this_program mu; ) if (mu) { Thread.Thread ct; if (ct = mu.current_locking_thread()) buf.sprintf("====================================== Mutex: %O\n%s\n", mu, describe_backtrace(ct.backtrace(), -1)); } buf.add("}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}"); werror(replace(buf.get(), "\n", sprintf("\n%d> ", deadlockseq++)) + "\n"); } Thread.MutexKey lock(void|int type) { Thread.MutexKey key; if (!(key = trylock(type))) { sentinelthread = Thread.Thread(dump_lockgraph, this_thread()); key = ::lock(type); sentinelthread->kill(); } return key; } protected void create() { //::create(); mutexes[this] = 1; } }; #else #define MUTEX Thread.Mutex #endif //! The instance of the pgsql dedicated backend. final Pike.Backend local_backend; private Shuffler.Shuffler shuffler = Shuffler.Shuffler(); private Pike.Backend cb_backend; private Result qalreadyprinted; private Thread.Mutex backendmux = Thread.Mutex(); final multiset(proxy) clients = set_weak_flag((<>), Pike.WEAK); mapping describenodata = (["datarowdesc":({}), "datarowtypes":({}), "datatypeoid":({})]); private multiset censoroptions = (<"use_ssl", "force_ssl", "cache_autoprepared_statements", "reconnect", "text_query", "is_superuser", "server_encoding", "server_version", "integer_datetimes", "session_authorization">); /* Statements matching createprefix cause the prepared statement cache * to be flushed to prevent stale references to (temporary) tables */ final Regexp createprefix = iregexp("^\a*(CREATE|DROP)\a"); /* Statements matching dontcacheprefix never enter the cache */ private Regexp dontcacheprefix = iregexp("^\a*(FETCH|COPY)\a"); /* Statements not matching paralleliseprefix will cause the driver * to stall submission until all previously started statements have * run to completion */ private Regexp paralleliseprefix = iregexp("^\a*((SELEC|INSER)T|(UPDA|DELE)TE|(FETC|WIT)H)\a"); /* Statements matching transbeginprefix will cause the driver to * insert a sync after the statement. * Failure to do so, will result in portal synchronisation errors * in the event of an ErrorResponse. */ final Regexp transbeginprefix = iregexp("^\a*(BEGIN|START)([; \t\f\r\n]|$)"); /* Statements matching transendprefix will cause the driver to * insert a sync after the statement. * Failure to do so, will result in portal synchronisation errors * in the event of an ErrorResponse. */ final Regexp transendprefix = iregexp("^\a*(COMMIT|ROLLBACK|END)([; \t\f\r\n]|$)"); /* Statements matching nodataresprefix will cause the driver * to skip asking for a query description and query results, since there * are no arguments or results to begin with. */ final Regexp nodataresprefix = iregexp("^\a*(RESET|CLOSE|DISCARD)\a"); /* For statements matching execfetchlimit the resultrows will not be * fetched in pieces. This heuristic will be sub-optimal whenever * either an UPDATE/DELETE/INSERT statement is prefixed by WITH, or * if there is a RETURNING with a *lot* of results. In those cases * the portal will be busy until all results have been fetched, and will * not be able to deliver results belonging to other parallel queries * running on the same filedescriptor. * * However, considering that the current heuristic increases query-speed * in the majority of the real-world cases, it would be considered a good * tradeoff. */ private Regexp execfetchlimit = iregexp("^\a*((UPDA|DELE)TE|INSERT|CREATE|DROP|CALL" "|RESET|CLOSE|DISCARD)\a|\aLIMIT\a+[1-9][; \t\f\r\n]*$"); private void default_backend_runs() { // Runs as soon as the cb_backend = Pike.DefaultBackend; // DefaultBackend has started } protected void create() { atexit(_destruct); // Run callbacks from our local_backend until DefaultBackend has started shuffler->set_backend(cb_backend = local_backend = Pike.Backend()); call_out(default_backend_runs, 0); } protected void _destruct() { foreach (clients; proxy client; ) destruct(client); } private Regexp iregexp(string expr) { Stdio.Buffer ret = Stdio.Buffer(); foreach (expr; ; int c) if (c >= 'A' && c <= 'Z') ret->add('[', c, c + 'a' - 'A', ']'); else if (c == '\a') // Replace with generic whitespace ret->add("[ \t\f\r\n]"); else ret->add_int8(c); return Regexp(ret->read()); } final void closestatement(bufcon|conxsess plugbuffer, string oldprep) { if (oldprep) { PD("Close statement %s\n", oldprep); CHAIN(plugbuffer)->add_int8('C')->add_hstring(({'S', oldprep, 0}), 4, 4); } } private void run_local_backend() { Thread.MutexKey lock; int looponce; do { looponce = 0; if (lock = backendmux->trylock()) { PD("Starting local backend\n"); while (sizeof(clients) // Autoterminate when not needed || sizeof(local_backend->call_out_info())) { mixed err; if (err = catch(local_backend(4096.0))) master()->handle_error(err); } PD("Terminating local backend\n"); lock = 0; looponce = sizeof(clients); } } while (looponce); } //! Registers yourself as a user of this backend. If the backend //! has not been started yet, it will be spawned automatically. final void register_backend(proxy client) { int startbackend = !sizeof(clients); clients[client] = 1; if (startbackend) Thread.Thread(run_local_backend); } final void throwdelayederror(Result|proxy parent) { if (mixed err = parent->delayederror) { if (!objectp(parent->pgsqlsess)) parent->untolderror = 0; else if (parent->pgsqlsess) parent->pgsqlsess->untolderror = parent->pgsqlsess->delayederror = 0; parent->delayederror = 0; if (stringp(err)) err = ({err, backtrace()[..<2]}); throw(err); } } private int readoidformat(int oid) { switch (oid) { case BOOLOID: case BYTEAOID: case CHAROID: case INT8OID: case INT2OID: case INT4OID: case FLOAT4OID: #if !constant(__builtin.__SINGLE_PRECISION_FLOAT__) case FLOAT8OID: #endif case NUMERICOID: case TEXTOID: case OIDOID: case XMLOID: case DATEOID: case TIMEOID: case TIMETZOID: case TIMESTAMPOID: case TIMESTAMPTZOID: case INTERVALOID: case INT4RANGEOID: case INT8RANGEOID: case DATERANGEOID: case TSRANGEOID: case TSTZRANGEOID: case MACADDROID: case BPCHAROID: case VARCHAROID: case CIDROID: case INETOID: case CTIDOID: case UUIDOID: return 1; //binary } return 0; // text } private int writeoidformat(int oid, array(string|int) paramValues, array(int) ai) { mixed value = paramValues[ai[0]++]; switch (oid) { case BOOLOID: case BYTEAOID: case CHAROID: case INT8OID: case INT2OID: case INT4OID: case TEXTOID: case OIDOID: case XMLOID: case MACADDROID: case BPCHAROID: case VARCHAROID: case CTIDOID: case UUIDOID: return 1; //binary case NUMERICOID: case CIDROID: case INETOID: case DATEOID: case TIMEOID: case TIMETZOID: case TIMESTAMPOID: case TIMESTAMPTZOID: case INTERVALOID: case INT4RANGEOID: case INT8RANGEOID: case DATERANGEOID: case TSRANGEOID: case TSTZRANGEOID: case FLOAT4OID: #if !constant(__builtin.__SINGLE_PRECISION_FLOAT__) case FLOAT8OID: #endif if (!stringp(value)) return 1; } return 0; // text } #define DAYSEPOCHTO2000 10957 // 2000/01/01 00:00:00 UTC #define USEPOCHTO2000 (DAYSEPOCHTO2000*24*3600*1000000) private array timestamptotype = ({Val.Timestamp, 8, USEPOCHTO2000, "usecs", 8}); private array datetotype = ({Val.Date, 4, DAYSEPOCHTO2000, "days", 4}); private mapping(int:array) oidtotype = ([ DATEOID: datetotype, TIMEOID: ({Val.Time, 8, 0, "usecs", 8}), TIMETZOID: ({Val.TimeTZ, 12, 0, "usecs", 8, "timezone", 4}), INTERVALOID: ({Val.Interval, 16, 0, "usecs", 8, "days", 4, "months",4}), TIMESTAMPOID: timestamptotype, TIMESTAMPTZOID: timestamptotype, INT4RANGEOID: ({0, 4}), INT8RANGEOID: ({0, 8}), DATERANGEOID: datetotype, TSRANGEOID: timestamptotype, TSTZRANGEOID: timestamptotype, ]); private inline mixed callout(function(mixed ...:void) f, float|int delay, mixed ... args) { return cb_backend->call_out(f, delay, @args); } // Some pgsql utility functions class bufcon { inherit Stdio.Buffer; private Thread.ResourceCountKey dirty; #ifdef PG_DEBUGRACE final bufcon `chain() { return this; } #endif private conxion realbuffer; protected void create(conxion _realbuffer) { realbuffer = _realbuffer; } final Thread.ResourceCount `stashcount() { return realbuffer->stashcount; } final MUTEX `shortmux() { return realbuffer->shortmux; } final bufcon start(void|int|array(Thread.MutexKey) waitforreal) { dirty = stashcount->acquire(); #ifdef PG_DEBUG if (waitforreal) error("pgsql.bufcon not allowed here\n"); #endif return this; } final void sendcmd(int mode, void|Result portal) { Thread.MutexKey lock = shortmux->lock(); if (portal) realbuffer->stashqueue->write(portal); if (mode == SYNCSEND) { add(PGSYNC); realbuffer->stashqueue->write(1); mode = SENDOUT; // Demote it to prevent an extra SYNC upon stashflush } realbuffer->stash->add(this); PD("%d>Stashed mode %d > %d\n", realbuffer->socket->query_fd(), mode, realbuffer->stashflushmode); if (mode > realbuffer->stashflushmode) realbuffer->stashflushmode = mode; dirty = 0; // Countdown before releasing the lock lock = 0; this->clear(); if (lock = realbuffer->nostash->trylock(1)) { #ifdef PG_DEBUGRACE conxsess sess = conxsess(realbuffer); realbuffer->started = lock; lock = 0; sess->sendcmd(SENDOUT); #else realbuffer->started = lock; lock = 0; realbuffer->sendcmd(SENDOUT); #endif } } }; class conxiin { inherit Stdio.Buffer:i; final Thread.Condition fillread; final MUTEX fillreadmux; final int procmsg; private int didreadcb; #if PG_DEBUGHISTORY > 0 final array history = ({}); final int(-1..) input_from(Stdio.Stream stm, void|int(0..) nbytes) { int oldsize = sizeof(this); int ret = i::input_from(stm, nbytes); if (ret) { Stdio.Buffer tb = Stdio.Buffer(this); tb->consume(oldsize); history += ({"<<"+tb->read(ret)}); history = history[<PG_DEBUGHISTORY - 1 ..]; } return ret; } #endif protected final bool range_error(int howmuch) { #ifdef PG_DEBUG if (howmuch < 0) { int available = unread(0); unread(available); error("Out of range %d %O %O\n", howmuch, ((string)this)[.. available-1], ((string)this)[available ..]); } #endif if (fillread) { Thread.MutexKey lock = fillreadmux->lock(); if (!didreadcb) fillread.wait(lock); didreadcb = 0; } else throw(MAGICTERMINATE); return true; } final int read_cb(mixed id, mixed b) { PD("Read callback %O\n", b && ((string)b) #ifndef PG_DEBUGMORE [..255] #endif ); Thread.MutexKey lock = fillreadmux->lock(); if (procmsg && id) procmsg = 0, lock = 0, Thread.Thread(id); else if (fillread) didreadcb = 1, fillread.signal(); return 0; } protected void create() { i::create(); fillreadmux = MUTEX(); fillread = Thread.Condition(); } }; class sfile { inherit Stdio.File; final int query_fd() { return is_open() ? ::query_fd() : -1; } }; class conxion { inherit Stdio.Buffer:o; final conxiin i; private Thread.Queue qportals; final MUTEX shortmux; private int closenext; final sfile #if constant(SSL.File) |SSL.File #endif socket; final Shuffler.Shuffle shuffle; final multiset(Result) runningportals = (<>); final MUTEX nostash; final Thread.MutexKey started; final Thread.Queue stashqueue; final Stdio.Buffer stash; //! @ignore final int(KEEP..SYNCSEND) stashflushmode; //! @endignore final Thread.ResourceCount stashcount; final int synctransact; #ifdef PG_DEBUGRACE final mixed nostrack; #endif #ifdef PG_DEBUG final int queueoutidx; final int queueinidx = -1; #endif private inline void queueup(Result portal) { qportals->write(portal); portal->_synctransact = synctransact; PD("%d>%O %d %d Queue portal %d bytes\n", socket->query_fd(), portal._portalname, ++queueoutidx, synctransact, sizeof(this)); } final bufcon|conxsess start(void|int|array(Thread.MutexKey) waitforreal) { Thread.MutexKey lock; #ifdef PG_DEBUGRACE if (nostash->current_locking_thread()) PD("Nostash locked by %s\n", describe_backtrace(nostash->current_locking_thread()->backtrace())); #endif while (lock = nostash && ((intp(waitforreal) && waitforreal > 0 ? nostash->lock : nostash->trylock)(1))) { int mode; if (sizeof(stash) && (mode = getstash(KEEP)) > KEEP) sendcmd(mode); // Force out stash to the server if (!stashcount->drained()) { lock = 0; // Unlock while we wait if (arrayp(waitforreal)) waitforreal[0] = 0; stashcount->wait_till_drained(); if (arrayp(waitforreal)) return 0; continue; // Try again } #ifdef PG_DEBUGRACE conxsess sess = conxsess(this); #endif started = lock; // sendcmd() clears started, so delay assignment #ifdef PG_DEBUGRACE return sess; #else return this; #endif } if (arrayp(waitforreal)) waitforreal[0] = 0; return !waitforreal && bufcon(this)->start(); } private void done_cb() { if (!i->fillread) close(); } private int getstash(int mode) { Thread.MutexKey lock = shortmux->lock(); add(stash); stash->clear(); foreach (stashqueue->try_read_array(); ; int|Result portal) if (intp(portal)) qportals->write(synctransact++); else queueup(portal); PD("%d>Got stash mode %d > %d\n", socket->query_fd(), stashflushmode, mode); if (stashflushmode > mode) mode = stashflushmode; stashflushmode = KEEP; return mode; } final void sendcmd(void|int mode, void|Result portal) { if (portal) queueup(portal); unfinalised: do { switch (mode) { default: break unfinalised; case SYNCSEND: PD("%d>Sync %d %d Queue\n", socket->query_fd(), synctransact, ++queueoutidx); add(PGSYNC); mode = SENDOUT; break; case FLUSHLOGSEND: PD("%d>%d Queue simplequery %d bytes\n", socket->query_fd(), ++queueoutidx, sizeof(this)); mode = FLUSHSEND; } qportals->write(synctransact++); } while (0); if (sizeof(stash)) mode = getstash(mode); #ifdef PG_DEBUG mixed err; #endif for(;;) { #ifdef PG_DEBUG err = #endif catch { outer: do { switch (mode) { default: PD("%d>Skip flush %d Queue %O\n", socket->query_fd(), mode, (string)this); break outer; case FLUSHSEND: PD("Flush\n"); add(PGFLUSH); case SENDOUT:; } if (sizeof(this)) { PD("%d>Sendcmd %O\n", socket->query_fd(), (string)this); #if PG_DEBUGHISTORY > 0 i->history += ({">>" + (string)this}); i->history = i->history[<PG_DEBUGHISTORY - 1 ..]; #endif shuffle->add_source(this); shuffle->start(1, 1); } } while (0); started = 0; if (sizeof(stash) && (started = nostash->trylock(2))) { #ifdef PG_DEBUGRACE conxsess sess = conxsess(this); sess->sendcmd(SENDOUT); #else mode = getstash(SENDOUT); continue; #endif } return; }; break; } started = 0; PD("Sendcmd failed %s\n", describe_backtrace(err)); destruct(this); } final int close() { if (!closenext && nostash) { closenext = 1; { Thread.MutexKey lock = i->fillreadmux->lock(); if (i->fillread) { // Delayed close() after flushing the output buffer shuffle->set_done_callback(done_cb); i->fillread.signal(); i->fillread = 0; } } PD("%d>Delayed close, flush write\n", socket->query_fd()); i->read_cb(socket->query_id(), 0); return 0; } else return -1; } final void purge() { if (stashcount) { stashcount = 0; PD("%d>Purge conxion %d\n", socket ? socket->query_fd() : -1, !!nostash); int|Result portal; if (qportals) // CancelRequest does not use qportals while (portal = qportals->try_read()) if (objectp(portal)) portal->_purgeportal(); if (nostash) { while (sizeof(runningportals)) catch { foreach (runningportals; Result result; ) if (!result.datarowtypes) { result.datarowtypes = ({}); if (result._state != PURGED && !result.delayederror) result.delayederror = LOSTERROR; result._ddescribe->broadcast(); runningportals[result] = 0; } else destruct(result); }; destruct(nostash); if (socket->set_non_blocking) socket->set_non_blocking(); // Drop all callbacks PD("%d>Close socket\n", socket->query_fd()); shuffle->stop(); socket->close(); // This will be an asynchronous close } destruct(this); } } protected void _destruct() { PD("%d>Close conxion %d\n", socket ? socket->query_fd() : -1, !!nostash); catch(purge()); } final void connectloop(proxy pgsqlsess, int nossl) { #ifdef PG_DEBUG mixed err = #endif catch { for (; ; clear()) { socket->connect(pgsqlsess. host, pgsqlsess. port); socket->set_nodelay(1); #if constant(SSL.File) if (!nossl && !pgsqlsess->nossl && (pgsqlsess.options.use_ssl || pgsqlsess.options.force_ssl)) { PD("SSLRequest\n"); start()->add_int32(8)->add_int32(PG_PROTOCOL(1234, 5679)) ->sendcmd(SENDOUT); string s = socket.read(1); switch (sizeof(s) && s[0]) { case 'S': SSL.File fcon = SSL.File(socket, SSL.Context()); if (fcon->connect()) { socket->set_backend(local_backend); socket = fcon; break; } default: PD("%d>Close socket short\n", socket->query_fd()); socket->close(); pgsqlsess.nossl = 1; continue; case 'N': if (pgsqlsess.options.force_ssl) error("Encryption not supported on connection to %s:%d\n", pgsqlsess.host, pgsqlsess.port); } } #else if (pgsqlsess.options.force_ssl) error("Encryption library missing," " cannot establish connection to %s:%d\n", pgsqlsess.host, pgsqlsess.port); #endif break; } if (!socket->is_open()) error(strerror(socket->errno()) + ".\n"); socket->set_backend(local_backend); socket->set_buffer_mode(i, 0); socket->set_nonblocking(i->read_cb, 0, close); shuffle = shuffler->shuffle(socket); if (nossl != 2) Thread.Thread(pgsqlsess->processloop, this); return; }; PD("Connect error %s\n", describe_backtrace(err)); catch(destruct(pgsqlsess->waitforauthready)); if (this) destruct(this); } protected string _sprintf(int type) { string res; if (!this) // Not in destructed objects return "(destructed)"; switch (type) { case 'O': int fd = -1; if (socket) catch(fd = socket->query_fd()); if (!this) // Not in destructed objects return "(destructed)"; res = predef::sprintf("conxion fd: %d input queue: %d/%d " "queued portals: %d output queue: %d/%d\n" "started: %d\n", fd, sizeof(i), i->_size_object(), qportals && qportals->size(), sizeof(this), _size_object(), !!started); break; } return res; } protected void create(proxy pgsqlsess, Thread.Queue _qportals, int nossl) { o::create(); qportals = _qportals; synctransact = 1; socket = sfile(); i = conxiin(); shortmux = MUTEX(); nostash = MUTEX(); closenext = 0; stashqueue = Thread.Queue(); stash = Stdio.Buffer(); stashcount = Thread.ResourceCount(); Thread.Thread(connectloop, pgsqlsess, nossl); } }; #ifdef PG_DEBUGRACE class conxsess { final conxion chain; protected void create(conxion parent) { if (parent->started) werror("Overwriting conxsess %s %s\n", describe_backtrace(({"new ", backtrace()[..<1]})), describe_backtrace(({"old ", parent->nostrack}))); parent->nostrack = backtrace(); chain = parent; } final void sendcmd(int mode, void|Result portal) { chain->sendcmd(mode, portal); chain = 0; } protected void _destruct() { if (chain) werror("Untransmitted conxsess %s\n", describe_backtrace(({"", backtrace()[..<1]}))); } }; #endif //! The result object returned by @[Sql.pgsql()->big_query()], except for //! the noted differences it behaves the same as @[Sql.Result]. //! //! @seealso //! @[Sql.Result], @[Sql.pgsql], @[Sql.Sql], @[Sql.pgsql()->big_query()] class Result { inherit __builtin.Sql.Result; private proxy pgsqlsess; private int(0..1) eoffound; private conxion c; private conxiin cr; final int(0..1) untolderror; final mixed delayederror; //! @ignore final int(PORTALINIT..PURGED) _state; //! @endignore final int _fetchlimit; private int(0..1) alltext; final int(0..1) _forcetext; private int syncparse; private int transtype; final string _portalname; private int inflight; int portalbuffersize; private MUTEX closemux; private Thread.Queue datarows; private Thread.ResourceCountKey stmtifkey, portalsifkey; private array(mapping(string:mixed)) datarowdesc; final array(int) datarowtypes; // types from datarowdesc private string statuscmdcomplete; private int bytesreceived; final int _synctransact; final Thread.Condition _ddescribe; final MUTEX _ddescribemux; final Thread.MutexKey _unnamedportalkey, _unnamedstatementkey; final array _params; final string _query; final string _preparedname; final mapping(string:mixed) _tprepared; private function(:void) gottimeout; private int timeout; protected string _sprintf(int type) { string res; if (!this) // Not in destructed objects return "(destructed)"; switch (type) { case 'O': int fd = -1; if (c && c->socket) catch(fd = c->socket->query_fd()); if (!this) // Not in destructed objects return ""; res = sprintf( "Result state: %d numrows: %d eof: %d inflight: %d\n" "fd: %O portalname: %O coltypes: %d" " synctransact: %d laststatus: %s\n" "stash: %O\n" #if PG_DEBUGHISTORY > 0 "history: %O\n" #endif "query: %O\n%s\n", _state, index, eoffound, inflight, fd, _portalname, datarowtypes && sizeof(datarowtypes), _synctransact, statuscmdcomplete || (_unnamedstatementkey ? "*parsing*" : ""), qalreadyprinted == this ? 0 : c && (string)c->stash, #if PG_DEBUGHISTORY > 0 qalreadyprinted == this ? 0 : c && c->i->history, #endif qalreadyprinted == this ? "..." : replace(_query, "xxxx\n", "\\n"), qalreadyprinted == this ? "..." : _showbindings()*"\n"); qalreadyprinted = this; break; } return res; } protected void create(proxy _pgsqlsess, conxion _c, string query, int _portalbuffersize, int alltyped, array params, int forcetext, int _timeout, int _syncparse, int _transtype) { pgsqlsess = _pgsqlsess; if (c = _c) cr = c->i; else losterror(LOSTERROR); _query = query; datarows = Thread.Queue(); _ddescribe = Thread.Condition(); _ddescribemux = MUTEX(); closemux = MUTEX(); portalbuffersize = _portalbuffersize; alltext = !alltyped; _params = params; _forcetext = forcetext; _state = PORTALINIT; timeout = _timeout; syncparse = _syncparse; gottimeout = _pgsqlsess->cancelquery; c->runningportals[this] = 1; transtype = _transtype; } final array(string) _showbindings() { array(string) msgs = ({}); if (_params) { array from, to, paramValues; [from, to, paramValues] = _params; if (sizeof(paramValues)) { int i; string val, fmt = sprintf("%%%ds %%3s %%.61s", max(@map(from, sizeof))); foreach (paramValues; i; val) msgs += ({sprintf(fmt, from[i], to[i], sprintf("%O", val))}); } } return msgs; } //! Returns the command-complete status for this query. //! //! @seealso //! @[Sql.Result()->status_command_complete()] /*semi*/final string status_command_complete() { if (!statuscmdcomplete) { if (!datarowtypes) waitfordescribe(); { Thread.MutexKey lock = closemux->lock(); if (_fetchlimit) { array(Thread.MutexKey) reflock = ({ _fetchlimit = 0 }); for (;;) { reflock[0] = lock; lock = 0; if (!_sendexecute(0, reflock)) { PD("Status_command_complete retry closemux %O\n", _portalname); lock = closemux->lock(); continue; } break; } } lock = 0; // Force release before acquiring next lock = _ddescribemux->lock(); if (!statuscmdcomplete) PT(_ddescribe->wait(lock)); } if (this) // If object already destructed, skip the next call trydelayederror(); // since you cannot call functions anymore else error(LOSTERROR); } return statuscmdcomplete; } //! Returns the number of affected rows by this query. //! //! @seealso //! @[Sql.Result()->affected_rows()] /*semi*/final int affected_rows() { int rows; sscanf(status_command_complete() || "", "%*s %d %d", rows, rows); return rows; } final void _storetiming() { if (_tprepared) { _tprepared.trun = gethrtime() - _tprepared.trunstart; m_delete(_tprepared, "trunstart"); _tprepared = 0; } } private void waitfordescribe() { { Thread.MutexKey lock = _ddescribemux->lock(); if (!datarowtypes) PT(_ddescribe->wait(lock)); } if (this) // If object already destructed, skip the next call trydelayederror(); // since you cannot call functions anymore else error(LOSTERROR); } //! @seealso //! @[Sql.Result()->num_fields()] /*semi*/final int num_fields() { if (!datarowtypes) waitfordescribe(); return sizeof(datarowtypes); } //! @note //! This method returns the number of rows already received from //! the database for the current query. Note that this number //! can still increase between subsequent calls if the results from //! the query are not complete yet. This function is only guaranteed to //! return the correct count after EOF has been reached. //! @seealso //! @[Sql.Result()->num_rows()] /*semi*/final int num_rows() { trydelayederror(); return index; } private void losterror(void|string err) { if (pgsqlsess) err = pgsqlsess->geterror(1) || err; if (err) error("%s\n", err); } private void trydelayederror() { if (delayederror) throwdelayederror(this); else if (_state == PURGED) losterror(); } //! @seealso //! @[Sql.Result()->eof()] /*semi*/final int eof() { trydelayederror(); return eoffound; } //! @seealso //! @[Sql.Result()->fetch_fields()] /*semi*/final array(mapping(string:mixed)) fetch_fields() { if (!datarowtypes) waitfordescribe(); if (!datarowdesc) error(LOSTERROR); return datarowdesc + ({}); } #ifdef PG_DEBUG #define INTVOID int #else #define INTVOID void #endif final INTVOID _decodedata(int msglen, string cenc) { _storetiming(); _releasestatement(); string serror; bytesreceived += msglen; int cols = cr->read_int16(); array a = allocate(cols, !alltext && Val.null); #ifdef PG_DEBUG msglen -= 2 + 4 * cols; #endif foreach (datarowtypes; int i; int typ) { int collen = cr->read_sint(4); if (collen > 0) { #ifdef PG_DEBUG msglen -= collen; #endif mixed value; switch (typ) { case FLOAT4OID: #if !constant(__builtin.__SINGLE_PRECISION_FLOAT__) case FLOAT8OID: #endif if (_forcetext) { if (!alltext) { value = (float)cr->read(collen); break; } } else { [ value ] = cr->sscanf(collen == 4 ? "%4F" : "%8F"); if (alltext) value = sprintf("%.*g", collen == 4 ? 9 : 17, value); break; } default:value = cr->read(collen); break; case CHAROID: value = alltext ? cr->read(1) : cr->read_int8(); break; case BOOLOID:value = cr->read_int8(); switch (value) { case 'f':value = 0; break; case 't':value = 1; } if (alltext) value = value ? "t" : "f"; break; case TEXTOID: case BPCHAROID: case VARCHAROID: value = cr->read(collen); if (cenc == UTF8CHARSET && catch(value = utf8_to_string(value)) && !serror) serror = SERROR("%O contains non-%s characters\n", value, UTF8CHARSET); break; case NUMERICOID: if (_forcetext) { value = cr->read(collen); if (!alltext) { value = value/"."; if (sizeof(value) == 1) value = (int)value[0]; else { int i, denom; for (i = sizeof(value[1]), denom = 1; --i >= 0; denom *= 10); i = (int)value[0]; value = (int)value[1]; value = Gmp.mpq(i * denom + (i >= 0 ? value : -value), denom); } } } else { int nwords = cr->read_int16(); int magnitude = cr->read_sint(2); int sign = cr->read_int16(); cr->consume(2); if (nwords) { for (value = cr->read_int16(); --nwords; magnitude--) value = value * NUMERIC_MAGSTEP + cr->read_int16(); if (sign) value = -value; if (magnitude > 0) do value *= NUMERIC_MAGSTEP; while (--magnitude); else if (magnitude < 0) { for (sign = NUMERIC_MAGSTEP; ++magnitude; sign *= NUMERIC_MAGSTEP); value = Gmp.mpq(value, sign); } } else value = 0; if (alltext) value = (string)value; } break; case INT4RANGEOID: case INT8RANGEOID: case DATERANGEOID: case TSRANGEOID: case TSTZRANGEOID: if (_forcetext) value = cr->read(collen); else { array totype = oidtotype[typ]; mixed from = -Math.inf, till = Math.inf; switch (cr->read_int8()) { case 1: from = till = 0; break; case 0x12: from = cr->read_sint(cr->read_int32()); break; case 2: from = cr->read_sint(cr->read_int32()); case 8: till = cr->read_sint(cr->read_int32()); } if (totype[0]) { if (intp(from)) { value = totype[0](); value[totype[3]] = from + totype[2]; from = value; } if (intp(till)) { value = totype[0](); value[totype[3]] = till + totype[2]; till = value; } } value = Val.Range(from, till); if (alltext) value = value->sql(); } break; case CIDROID: case INETOID: if (_forcetext) value = cr->read(collen); else { value = Val.Inet(); int iptype = cr->read_int8(); // 2 == IPv4, 3 == IPv6 value->masklen = cr->read_int8() + (iptype == 2 && 12*8); cr->read_int8(); // 0 == INET, 1 == CIDR value->address = cr->read_hint(1); if (alltext) value = (string)value; } break; case TIMESTAMPOID: case TIMESTAMPTZOID: case INTERVALOID: case TIMETZOID: case TIMEOID: case DATEOID: if (_forcetext) value = cr->read(collen); else { array totype = oidtotype[typ]; value = totype[0](); value[totype[3]] = cr->read_sint(totype[4]) + totype[2]; int i = 5; while (i < sizeof(totype)) { value[totype[i]] = cr->read_sint(totype[i+1]); i += 2; } if (alltext) value = (string)value; } break; case INT8OID:case INT2OID: case OIDOID:case INT4OID: if (_forcetext) { value = cr->read(collen); if (!alltext) value = (int)value; } else { value = cr->read_sint(collen); if (alltext) value = (string)value; } } a[i]=value; } else if (!collen) a[i]=""; } _processdataready(a); if (serror) error(serror); #ifdef PG_DEBUG return msglen; #endif } final void _setrowdesc(array(mapping(string:mixed)) drowdesc, array(int) drowtypes) { Thread.MutexKey lock = _ddescribemux->lock(); datarowdesc = drowdesc; datarowtypes = drowtypes; _ddescribe->broadcast(); } final void _preparebind(array dtoid) { array(string|int) paramValues = _params ? _params[2] : ({}); if (sizeof(dtoid) != sizeof(paramValues)) SUSERERROR("Invalid number of bindings, expected %d, got %d\n", sizeof(dtoid), sizeof(paramValues)); PD("PrepareBind\n"); Thread.MutexKey lock = _ddescribemux->lock(); if (!_portalname) { _portalname = (_unnamedportalkey = pgsqlsess.unnamedportalmux->trylock(1)) ? "" : PORTALPREFIX #ifdef PG_DEBUG + (string)(c->socket->query_fd()) + "_" #endif + String.int2hex(pgsqlsess.pportalcount++); lock = 0; #ifdef PG_DEBUGMORE PD("ParamValues to bind: %O\n", paramValues); #endif Stdio.Buffer plugbuffer = Stdio.Buffer(); { array dta = ({sizeof(dtoid)}); plugbuffer->add(_portalname, 0, _preparedname, 0) ->add_ints(dta + map(dtoid, writeoidformat, paramValues, ({0})) + dta, 2); } string cenc = pgsqlsess.runtimeparameter[CLIENT_ENCODING]; foreach (paramValues; int i; mixed value) { if (undefinedp(value) || objectp(value) && value->is_val_null) plugbuffer->add_int32(-1); // NULL else if (stringp(value) && !sizeof(value)) { int k = 0; switch (dtoid[i]) { default: k = -1; // cast empty strings to NULL for non-string types case BYTEAOID: case TEXTOID: case XMLOID: case BPCHAROID: case VARCHAROID:; } plugbuffer->add_int32(k); } else switch (dtoid[i]) { case TEXTOID: case BPCHAROID: case VARCHAROID: { if (!value) { plugbuffer->add_int32(-1); break; } value = (string)value; switch (cenc) { case UTF8CHARSET: if (has_value(value, 0)) SUSERERROR("NUL characters not allowed in PG-UTF-8: %O\n", value); else value = string_to_utf8(value); break; default: if (String.width(value)>8) { SUSERERROR("Don't know how to convert %O to %s encoding\n", value, cenc); value=""; } } plugbuffer->add_hstring(value, 4); break; } default: { if (!value) { plugbuffer->add_int32(-1); break; } if (!objectp(value) || typeof(value) != typeof(Stdio.Buffer())) /* * Like Oracle and SQLite, we accept literal binary values * from single-valued multisets. */ if (multisetp(value) && sizeof(value) == 1) value = indices(value)[0]; else { value = (string)value; if (cenc == UTF8CHARSET && (dtoid[i] != BYTEAOID || String.width(value) > 8)) /* * FIXME For BYTEAOID and wide strings we should * throw an error here, but for historical reasons and * as a DWIM convenience we autoconvert to UTF8 anyway. */ value = string_to_utf8(value); else if (String.width(value) > 8) { SUSERERROR( "Wide string %O not supported for type OID %d\n", value, dtoid[i]); value = ""; } } plugbuffer->add_hstring(value, 4); break; } case BOOLOID: do { int tval; if (stringp(value)) tval = value[0]; else if (!intp(value)) { value = !!value; // cast to boolean break; } else tval = value; switch (tval) { case 'o':case 'O': catch { tval = value[1]; value = tval == 'n' || tval == 'N'; }; break; default: value = 1; break; case 0:case '0':case 'f':case 'F':case 'n':case 'N': value = 0; break; } } while (0); plugbuffer->add("\0\0\0\1", value); break; case CHAROID: if (intp(value)) plugbuffer->add_hstring(value, 4); else { value = (string)value; switch (sizeof(value)) { default: SUSERERROR( "\"char\" types must be 1 byte wide, got %O\n", value); case 0: plugbuffer->add_int32(-1); // NULL break; case 1: plugbuffer->add_hstring(value[0], 4); } } break; case NUMERICOID: if (stringp(value)) plugbuffer->add_hstring(value, 4); else { int num, den, sign, magnitude = 0; value = Gmp.mpq(value); num = value->num(); den = value->den(); for (value = den; value > NUMERIC_MAGSTEP; value /= NUMERIC_MAGSTEP); if (value > 1) { value = NUMERIC_MAGSTEP / value; num *= value; den *= value; } if (num < 0) sign = 0x4000, num = -num; else sign = 0; array stor = ({}); if (num) { while (!(num % NUMERIC_MAGSTEP)) num /= NUMERIC_MAGSTEP, magnitude++; do stor = ({num % NUMERIC_MAGSTEP}) + stor, magnitude++; while (num /= NUMERIC_MAGSTEP); num = --magnitude << 2; while (den > 1) magnitude--, den /= NUMERIC_MAGSTEP; } plugbuffer->add_int32(4 * 2 + (sizeof(stor) << 1)) ->add_int16(sizeof(stor))->add_int16(magnitude) ->add_int16(sign)->add_int16(num)->add_ints(stor, 2); } break; case INT4RANGEOID: case INT8RANGEOID: case DATERANGEOID: case TSRANGEOID: case TSTZRANGEOID: if (stringp(value)) plugbuffer->add_hstring(value, 4); else if (value->from >= value->till) plugbuffer->add("\0\0\0\1\1"); else { array totype = oidtotype[dtoid[i]]; int w = totype[1]; int from, till; if (totype[0]) from = value->from, till = value->till; else { from = value->from[totype[3]] - totype[2]; till = value->till[totype[3]] - totype[2]; } if (value->till == Math.inf) if (value->from == -Math.inf) plugbuffer->add("\0\0\0\1\30"); else plugbuffer->add("\0\0\0", 1 + 4 + w, "\22\0\0\0", w) ->add_int(from, w); else { if (value->from == -Math.inf) plugbuffer->add("\0\0\0", 1 + 4 + w, 8); else plugbuffer->add("\0\0\0", 1 + 4 * 2 + w * 2, "\2\0\0\0", w) ->add_int(from, w); plugbuffer->add_int32(w)->add_int(till, w); } } break; case CIDROID: case INETOID: if (stringp(value)) plugbuffer->add_hstring(value, 4); else if (value->address <= 0xffffffff) // IPv4 plugbuffer->add("\0\0\0\10\2", value->masklen - 12 * 8, dtoid[i] == CIDROID, 4) ->add_int32(value->address); else // IPv6 plugbuffer->add("\0\0\0\24\3", value->masklen, dtoid[i] == CIDROID, 16) ->add_int(value->address, 16); break; case DATEOID: case TIMEOID: case TIMETZOID: case INTERVALOID: case TIMESTAMPOID: case TIMESTAMPTZOID: if (stringp(value)) plugbuffer->add_hstring(value, 4); else { array totype = oidtotype[dtoid[i]]; if (!objectp(value)) value = totype[0](value); plugbuffer->add_int32(totype[1]) ->add_int(value[totype[3]] - totype[2], totype[4]); int i = 5; while (i < sizeof(totype)) { plugbuffer->add_int(value[totype[i]], totype[i+1]); i += 2; } } break; case FLOAT4OID: #if !constant(__builtin.__SINGLE_PRECISION_FLOAT__) case FLOAT8OID: #endif if (stringp(value)) plugbuffer->add_hstring(value, 4); else { int w = dtoid[i] == FLOAT4OID ? 4 : 8; plugbuffer->add_int32(w) ->sprintf(w == 4 ? "%4F" : "%8F", (float)value); } break; case INT8OID: plugbuffer->add_int32(8)->add_int((int)value, 8); break; case OIDOID: case INT4OID: plugbuffer->add_int32(4)->add_int32((int)value); break; case INT2OID: plugbuffer->add_int32(2)->add_int16((int)value); break; } } if (!datarowtypes) { if (_tprepared && dontcacheprefix->match(_query)) m_delete(pgsqlsess->prepareds, _query), _tprepared = 0; PD("WaitForDescribe\n"); waitfordescribe(); } PD("About to bind %d\n", _state); if (_state >= CLOSING) lock = _unnamedstatementkey = 0; else { plugbuffer->add_int16(sizeof(datarowtypes)); if (sizeof(datarowtypes)) { plugbuffer->add_ints(map(datarowtypes, readoidformat), 2); lock = 0; } else if (syncparse < 0 && !pgsqlsess->wasparallelisable && !pgsqlsess->statementsinflight->drained(1)) { lock = 0; // Unlock while we wait PD("Commit waiting for statements to finish\n"); catch(PT(pgsqlsess->statementsinflight->wait_till_drained(1))); } PD("Bind portal %O statement %O\n", _portalname, _preparedname); _fetchlimit = pgsqlsess->_fetchlimit; _bindportal(); conxsess bindbuffer = c->start(); stmtifkey = 0; CHAIN(bindbuffer)->add_int8('B')->add_hstring(plugbuffer, 4, 4); if (!_tprepared && sizeof(_preparedname)) closestatement(CHAIN(bindbuffer), _preparedname); _sendexecute(_fetchlimit && !(transtype != NOTRANS || sizeof(_query) >= MINPREPARELENGTH && execfetchlimit->match(_query)) && _fetchlimit, bindbuffer); _unnamedstatementkey = 0; } } } final void _processrowdesc(array(mapping(string:mixed)) datarowdesc, array(int) datarowtypes) { _setrowdesc(datarowdesc, datarowtypes); if (_tprepared) { _tprepared.datarowdesc = datarowdesc; _tprepared.datarowtypes = datarowtypes; } } final void _parseportal() { for (;;) { Thread.MutexKey lock = closemux->lock(); if ((syncparse || syncparse < 0 && pgsqlsess->wasparallelisable) && !pgsqlsess->statementsinflight->drained()) { lock = 0; // Unlock while we wait PD("Commit waiting for statements to finish %d\n", pgsqlsess->statementsinflight->_count); catch(PT(pgsqlsess->statementsinflight->wait_till_drained())); PD("Parseportal retry closemux %O\n", _portalname); continue; } _state = PARSING; stmtifkey = pgsqlsess->statementsinflight->acquire(); break; } statuscmdcomplete = 0; pgsqlsess->wasparallelisable = paralleliseprefix->match(_query); } final void _releasestatement() { Thread.MutexKey lock = closemux->lock(); if (_state <= BOUND) { stmtifkey = 0; _state = COMMITTED; } } final void _bindportal() { Thread.MutexKey lock = closemux->lock(); _state = BOUND; portalsifkey = pgsqlsess->portalsinflight->acquire(); } final void _purgeportal() { PD("Purge portal\n"); datarows->write(1); // Signal EOF { Thread.MutexKey lock = closemux->lock(); _fetchlimit = 0; // disables further Executes stmtifkey = portalsifkey = 0; _state = PURGED; } releaseconditions(); } final int _closeportal(conxsess cs, array(Thread.MutexKey) reflock) { void|bufcon|conxsess plugbuffer = CHAIN(cs); int retval = KEEP; PD("%O Try Closeportal %d\n", _portalname, _state); _fetchlimit = 0; // disables further Executes stmtifkey = 0; switch (_state) { case PORTALINIT: case PARSING: _unnamedstatementkey = 0; _state = CLOSING; break; case COPYINPROGRESS: PD("CopyDone\n"); plugbuffer->add("c\0\0\0\4"); case COMMITTED: case BOUND: _state = CLOSING; if (reflock) reflock[0] = 0; PD("Close portal %O\n", _portalname); if (_portalname && sizeof(_portalname)) { plugbuffer->add_int8('C') ->add_hstring(({'P', _portalname, 0}), 4, 4); retval = FLUSHSEND; } else _unnamedportalkey = 0; portalsifkey = 0; if (pgsqlsess->portalsinflight->drained()) { if (plugbuffer->stashcount->drained() && transtype != TRANSBEGIN) { /* * stashcount will be non-zero if a parse request has been queued * before the close was initiated. */ Thread.MutexKey lock = plugbuffer->shortmux->lock(); if (plugbuffer->stashcount->drained()) pgsqlsess->readyforquerycount++, retval = SYNCSEND; } pgsqlsess->pportalcount = 0; } } return retval; } private void replenishrows() { if (_fetchlimit && datarows->size() <= _fetchlimit >> 1 && _state >= COMMITTED) { Thread.MutexKey lock; for (;;) { lock = closemux->lock(); if (_fetchlimit) { _fetchlimit = pgsqlsess._fetchlimit; if (bytesreceived) _fetchlimit = min((portalbuffersize >> 1) * index / bytesreceived || 1, _fetchlimit); if (_fetchlimit) if (inflight <= (_fetchlimit - 1) >> 1) { array(Thread.MutexKey) reflock = ({ lock }); lock = 0; if (!_sendexecute(_fetchlimit, reflock)) { PD("Replenishrows retry closemux %O\n", _portalname); continue; } } else PD("<%O _fetchlimit %d, inflight %d, skip execute\n", _portalname, _fetchlimit, inflight); } break; } } } final void _processdataready(array datarow, void|int msglen) { bytesreceived += msglen; inflight--; if (_state < CLOSED) datarows->write(datarow); if (++index == 1) PD("<%O _fetchlimit %d=min(%d||1,%d), inflight %d\n", _portalname, _fetchlimit, (portalbuffersize >> 1) * index / bytesreceived, pgsqlsess._fetchlimit, inflight); replenishrows(); } private void releaseconditions(void|int aborted) { _unnamedportalkey = _unnamedstatementkey = 0; if (!datarowtypes) { if (_state != PURGED && !delayederror) delayederror = LOSTERROR; datarowtypes = ({}); _ddescribe->broadcast(); } if (aborted && delayederror && pgsqlsess && !pgsqlsess.delayederror) pgsqlsess.delayederror = delayederror; // Preserve error upstream pgsqlsess = 0; // Sever connection to upstream } final void _releasesession(void|string statusccomplete) { int aborted = statusccomplete == "ABORT" ? 2 : 0; c->runningportals[this] = 0; if (statusccomplete && !statuscmdcomplete) { Thread.MutexKey lock = _ddescribemux->lock(); statuscmdcomplete = statusccomplete; _ddescribe->broadcast(); } inflight = 0; conxsess plugbuffer; array(Thread.MutexKey) reflock = ({ 0 }); for (;;) { reflock[0] = closemux->lock(aborted); if (!catch(plugbuffer = c->start(reflock))) { if (!this) // If dead return; if (plugbuffer) plugbuffer->sendcmd(_closeportal(plugbuffer, reflock)); else { PD("Releasesession retry closemux %O\n", _portalname); continue; } } break; } reflock[0] = 0; if (_state < CLOSED) { stmtifkey = 0; _state = CLOSED; } datarows->write(1); // Signal EOF releaseconditions(aborted); } protected void _destruct() { if (_state < CLOSED) catch { // inside destructors, exceptions don't work _releasesession("ABORT"); }; } final int _sendexecute(int fetchlimit, void|array(Thread.MutexKey)|bufcon|conxsess plugbuffer) { int flushmode; array(Thread.MutexKey) reflock; PD("Execute portal %O fetchlimit %d transtype %d\n", _portalname, fetchlimit, transtype); if (arrayp(plugbuffer)) { reflock = plugbuffer; if (!(plugbuffer = c->start(reflock))) return 0; // Found potential deadlock, release and try again } CHAIN(plugbuffer)->add_int8('E')->add_hstring(({_portalname, 0}), 4, 8) ->add_int32(fetchlimit); if (!fetchlimit) { if (transtype != NOTRANS) pgsqlsess.intransaction = transtype == TRANSBEGIN; flushmode = _closeportal(plugbuffer, reflock) == SYNCSEND || transtype == TRANSEND ? SYNCSEND : FLUSHSEND; } else inflight += fetchlimit, flushmode = FLUSHSEND; plugbuffer->sendcmd(flushmode, this); if (reflock) reflock[0] = 0; return 1; } inline private array setuptimeout() { return local_backend->call_out(gottimeout, timeout); } inline private void scuttletimeout(array cid) { if (local_backend) local_backend->remove_call_out(cid); } //! @returns //! One result row at a time. //! //! When using COPY FROM STDOUT, this method returns one row at a time //! as a single string containing the entire row. //! //! @seealso //! @[eof()], @[send_row()] /*semi*/final array(mixed) fetch_row() { int|array datarow; if (!this) // If object already destructed, return fast return 0; replenishrows(); if (arrayp(datarow = datarows->try_read())) return datarow; if (!eoffound) { if (!datarow) { PD("%O Block for datarow\n", _portalname); array cid = setuptimeout(); PT(datarow = datarows->read()); if (!this) // If object already destructed, return fast return 0; scuttletimeout(cid); if (arrayp(datarow)) return datarow; } eoffound = 1; datarows->write(1); // Signal EOF for other threads } trydelayederror(); return 0; } //! @returns //! Multiple result rows at a time (at least one). //! //! When using COPY FROM STDOUT, this method returns one row at a time //! as a single string containing the entire row. //! //! @seealso //! @[eof()], @[fetch_row()] /*semi*/final array(array(mixed)) fetch_row_array() { if (eoffound) return 0; replenishrows(); array(array|int) datarow = datarows->try_read_array(); if (!sizeof(datarow)) { array cid = setuptimeout(); PT(datarow = datarows->read_array()); if (!this) // If object already destructed, return fast return 0; scuttletimeout(cid); } replenishrows(); if (arrayp(datarow[-1])) return datarow; do datarow = datarow[..<1]; // Swallow EOF mark(s) while (sizeof(datarow) && !arrayp(datarow[-1])); trydelayederror(); eoffound = 1; datarows->write(1); // Signal EOF for other threads return datarow; } //! @param copydata //! When using COPY FROM STDIN, this method accepts a string or an //! array of strings to be processed by the COPY command; when sending //! the amount of data sent per call does not have to hit row or column //! boundaries. //! //! The COPY FROM STDIN sequence needs to be completed by either //! explicitly or implicitly destroying the result object, or by passing no //! argument to this method. //! //! @seealso //! @[fetch_row()], @[eof()] /*semi*/final void send_row(void|string|array(string) copydata) { trydelayederror(); if (copydata) { PD("CopyData\n"); void|bufcon|conxsess cs = c->start(); CHAIN(cs)->add_int8('d')->add_hstring(copydata, 4, 4); cs->sendcmd(SENDOUT); } else _releasesession(); } private void run_result_cb( function(Result, array(mixed), mixed ...:void) callback, array(mixed) args) { int|array datarow; for (;;) { array cid = setuptimeout(); PT(datarow = datarows->read()); if (!this) // If object already destructed, return fast return 0; scuttletimeout(cid); if (!arrayp(datarow)) break; callout(callback, 0, this, datarow, @args); } eoffound = 1; callout(callback, 0, this, 0, @args); } //! Sets up a callback for every row returned from the database. //! First argument passed is the resultobject itself, second argument //! is the result row (zero on EOF). //! //! @seealso //! @[fetch_row()] /*semi*/final void set_result_callback( function(Result, array(mixed), mixed ...:void) callback, mixed ... args) { if (callback) Thread.Thread(run_result_cb, callback, args); } private void run_result_array_cb( function(Result, array(array(mixed)), mixed ...:void) callback, array(mixed) args) { array(array|int) datarow; for (;;) { array cid = setuptimeout(); PT(datarow = datarows->read_array()); if (!this) // If object already destructed, return fast return 0; scuttletimeout(cid); if (!datarow || !arrayp(datarow[-1])) break; callout(callback, 0, this, datarow, @args); } eoffound = 1; if (sizeof(datarow)>1) callout(callback, 0, this, datarow = datarow[..<1], @args); callout(callback, 0, this, 0, @args); } //! Sets up a callback for sets of rows returned from the database. //! First argument passed is the resultobject itself, second argument //! is the array of result rows (zero on EOF). //! //! @seealso //! @[fetch_row()] /*semi*/final void set_result_array_callback( function(Result, array(array(mixed)), mixed ...:void) callback, mixed ... args) { if (callback) Thread.Thread(run_result_array_cb, callback, args); } }; class proxy { final int _fetchlimit = FETCHLIMIT; final MUTEX unnamedportalmux; final MUTEX unnamedstatement; private Thread.MutexKey|int termlock; final Thread.ResourceCount portalsinflight, statementsinflight; final int(0..1) wasparallelisable; final int(0..1) intransaction; final conxion c; private string cancelsecret; private int backendpid; final int(-128..127) backendstatus; final mapping(string:mixed) options; private array(string) lastmessage = ({}); final int(0..1) clearmessage; final int(0..1) untolderror; final mixed delayederror; private mapping(string:array(mixed)) notifylist = ([]); final mapping(string:string) runtimeparameter; final mapping(string:mapping(string:mixed)) prepareds = ([]); final int pportalcount; final int totalhits; final int msgsreceived; // Number of protocol messages received final int bytesreceived; // Number of bytes received final int warningsdropcount; // Number of uncollected warnings private int warningscollected; final int(0..1) invalidatecache; private Thread.Queue qportals; final function (:void) readyforquery_cb; final string host; final int(0..65535) port; final string database, user, pass; private Crypto.Hash.SCRAM SASLcontext; final Thread.Condition waitforauthready; final MUTEX shortmux; final int readyforquerycount; protected string _sprintf(int type) { string res; if (!this) // Not in destructed objects return "(destructed)"; switch (type) { case 'O': res = sprintf(DRIVERNAME".proxy(%s@%s:%d/%s,%d,%d)", user, host, port, database, c && c->socket && c->socket->query_fd(), backendpid); break; } return res; } protected void create(void|string host, void|string database, void|string user, void|string pass, void|mapping(string:mixed) options) { if (this::pass = pass) { String.secure(pass); pass = "CENSORED"; } this::user = user; this::database = database; this::options = options; if (!host) host = PGSQL_DEFAULT_HOST; if (has_value(host,":") && sscanf(host,"%s:%d", host, port) != 2) error("Error in parsing the hostname argument\n"); this::host = host; if (!port) port = PGSQL_DEFAULT_PORT; register_backend(this); shortmux = MUTEX(); PD("Connect\n"); waitforauthready = Thread.Condition(); qportals = Thread.Queue(); readyforquerycount = 1; qportals->write(1); if (!(c = conxion(this, qportals, 0))) error("Couldn't connect to database on %s:%d\n", host, port); runtimeparameter = ([]); unnamedportalmux = MUTEX(); unnamedstatement = MUTEX(); readyforquery_cb = connect_cb; portalsinflight = Thread.ResourceCount(); statementsinflight = Thread.ResourceCount(); wasparallelisable = 0; } final int is_open() { return c && c->socket && c->socket->is_open(); } final string geterror(void|int clear) { untolderror = 0; string s = lastmessage * "\n"; if (clear) lastmessage = ({}); warningscollected = 0; return sizeof(s) && s; } final string host_info() { return sprintf("fd:%d TCP/IP %s:%d PID %d", c ? c->socket->query_fd() : -1, host, port, backendpid); } final void cancelquery() { if (cancelsecret > "") { PD("CancelRequest\n"); conxion lcon = conxion(this, 0, 2); #ifdef PG_DEBUG mixed err = #endif catch(lcon->add_int32(16)->add_int32(PG_PROTOCOL(1234, 5678)) ->add_int32(backendpid)->add(cancelsecret)->sendcmd(FLUSHSEND)); #ifdef PG_DEBUG if (err) PD("CancelRequest failed to connect %s\n", describe_backtrace(err)); #endif destruct(lcon); // Destruct explicitly to avoid delayed close #ifdef PG_DEBUGMORE PD("Closetrace %O\n", backtrace()); #endif } else error("Connection not established, cannot cancel any query\n"); } private string a2nls(array(string) msg) { return msg * "\n" + "\n"; } private string pinpointerror(void|string query, void|string offset) { if (!query) return ""; int k = (int)offset; if (k <= 0) return MARKSTART + query + MARKEND; return MARKSTART + (k > 1 ? query[..k-2] : "") + MARKERROR + query[k - 1..] + MARKEND; } private void connect_cb() { PD("%O\n", runtimeparameter); } private array(string) showbindings(Result portal) { return portal ? portal._showbindings() : ({}); } private void preplastmessage(mapping(string:string) msgresponse) { lastmessage = ({ sprintf("%s %s:%s %s\n (%s:%s:%s)", msgresponse.S, msgresponse.C, msgresponse.P || "", msgresponse.M, msgresponse.F || "", msgresponse.R || "", msgresponse.L||"")}); } private int|Result portal; // state information procmessage #ifdef PG_DEBUG private string datarowdebug; private int datarowdebugcount; #endif final void processloop(conxion ci) { (c = ci)->socket->set_id(procmessage); cancelsecret = 0; portal = 0; { Stdio.Buffer plugbuffer = Stdio.Buffer()->add_int32(PG_PROTOCOL(3, 0)); if (user) plugbuffer->add("user\0", user, 0); if (database) plugbuffer->add("database\0", database, 0); foreach (options - censoroptions; string name; mixed value) plugbuffer->add(name, 0, (string)value, 0); plugbuffer->add_int8(0); PD("%O\n", (string)plugbuffer); void|bufcon|conxsess cs; if (catch(cs = ci->start())) { if (this) { // Only if still alive destruct(waitforauthready); unnamedstatement = 0; termlock = 1; } return; } else { CHAIN(cs)->add_hstring(plugbuffer, 4, 4); cs->sendcmd(SENDOUT); } } // Do not flush at this point, PostgreSQL 9.4 disapproves procmessage(); } private void stasherror(int|object portal, mixed err) { if (stringp(err)) { if (!objectp(portal)) portal = this; if (!portal->delayederror) portal->delayederror = err; } if (objectp(portal) && portal->_purgeportal) portal->_purgeportal(); } private void tryprepbind(Result portal, array dtoid) { mixed err = catch(portal->_preparebind(dtoid)); if (err) { stasherror(portal, err); if (!stringp(err)) throw(err); } } private void procmessage() { mixed err; int terminating = 0; err = catch { conxion ci = c; // cache value conxiin cr = ci->i; // cache value #ifdef PG_DEBUG PD("Processloop\n"); #ifdef PG_DEBUGMORE void showportalstack(string label) { PD(sprintf(">>>>>>>>>>> Portalstack %s: %O\n", label, portal)); foreach (qportals->peek_array(); ; int|Result qp) PD(" =========== Portal: %O\n", qp); PD("<<<<<<<<<<<<<< Portalstack end\n"); }; #endif void showportal(int msgtype) { if (objectp(portal)) PD("%d<%O %d %c switch portal\n", ci->socket->query_fd(), portal._portalname, ++ci->queueinidx, msgtype); else if (portal > 0) PD("%d<Sync %d %d %c portal\n", ci->socket->query_fd(), ++ci->queueinidx, portal, msgtype); }; #endif int msgisfatal(mapping(string:string) msgresponse) { int isfatal = (has_prefix(msgresponse.C, "53") || has_prefix(msgresponse.C, "3D") || has_prefix(msgresponse.C, "57P")) && MAGICTERMINATE; if (isfatal && !terminating) // Run the callback once per lost connection runcallback(backendpid, "_lost", ""); return isfatal; }; for (;;) { err = catch { #ifdef PG_DEBUG if (!portal && datarowdebug) { PD("%s rows %d\n", datarowdebug, datarowdebugcount); datarowdebug = 0; datarowdebugcount = 0; } #endif #ifdef PG_DEBUGMORE showportalstack("LOOPTOP"); #endif if (!sizeof(cr)) { // Preliminary check, fast path Thread.MutexKey lock = cr->fillreadmux->lock(); if (!sizeof(cr)) { // Check for real if (!cr->fillread) { lock = 0; throw(MAGICTERMINATE); // Force proper termination } cr->procmsg = 1; return; // Terminate thread, wait for callback } } int msgtype = cr->read_int8(); if (!portal) { portal = qportals->try_read(); #ifdef PG_DEBUG showportal(msgtype); #endif } int msglen = cr->read_int32(); msgsreceived++; bytesreceived += 1 + msglen; int errtype = NOERROR; PD("%d<", ci->socket->query_fd()); switch (msgtype) { array getcols() { int bintext = cr->read_int8(); int cols = cr->read_int16(); #ifdef PG_DEBUG array a; msglen -= 4 + 1 + 2 + 2 * cols; foreach (a = allocate(cols, ([])); ; mapping m) m.type = cr->read_int16(); #else cr->consume(cols << 1); #endif // Discard column info, and make it line oriented return ({ ({(["name":"line"])}), ({bintext?BYTEAOID:TEXTOID}) }); }; array(string) reads() { #ifdef PG_DEBUG if (msglen < 1) errtype = PROTOCOLERROR; #endif array ret = ({}), aw = ({0}); do { string w = cr->read_cstring(); msglen -= sizeof(w) + 1; aw[0] = w; ret += aw; } while (msglen); return ret; }; mapping(string:string) getresponse() { mapping(string:string) msgresponse = ([]); msglen -= 4; foreach (reads(); ; string f) if (sizeof(f)) msgresponse[f[..0]] = f[1..]; PD("%O\n", msgresponse); return msgresponse; }; case 'R': { void authresponse(string|array msg) { void|bufcon|conxsess cs = ci->start(); CHAIN(cs)->add_int8('p')->add_hstring(msg, 4, 4); cs->sendcmd(SENDOUT); // No flushing, PostgreSQL 9.4 disapproves }; PD("Authentication "); msglen -= 4 + 4; int authtype, k; switch (authtype = cr->read_int32()) { case 0: PD("Ok\n"); if (SASLcontext) { PD("Authentication validation still in progress\n"); errtype = PROTOCOLUNSUPPORTED; } else cancelsecret = ""; break; case 2: PD("KerberosV5\n"); errtype = PROTOCOLUNSUPPORTED; break; case 3: PD("ClearTextPassword\n"); authresponse(({pass, 0})); break; case 4: PD("CryptPassword\n"); errtype = PROTOCOLUNSUPPORTED; break; case 5: PD("MD5Password\n"); #ifdef PG_DEBUG if (msglen < 4) errtype = PROTOCOLERROR; #endif #define md5hex(x) String.string2hex(Crypto.MD5.hash(x)) authresponse(({"md5", md5hex(md5hex(pass + user) + cr->read(msglen)), 0})); #ifdef PG_DEBUG msglen = 0; #endif break; case 6: PD("SCMCredential\n"); errtype = PROTOCOLUNSUPPORTED; break; case 7: PD("GSS\n"); errtype = PROTOCOLUNSUPPORTED; break; case 9: PD("SSPI\n"); errtype = PROTOCOLUNSUPPORTED; break; case 8: PD("GSSContinue\n"); errtype = PROTOCOLUNSUPPORTED; cr->read(msglen); // SSauthdata #ifdef PG_DEBUG if (msglen<1) errtype = PROTOCOLERROR; msglen = 0; #endif break; case 10: { string word; PD("AuthenticationSASL\n"); k = 0; while (sizeof(word = cr->read_cstring())) { switch (word) { case "SCRAM-SHA-256": k = 1; } #ifdef PG_DEBUG msglen -= sizeof(word) + 1; if (msglen < 1) break; #endif } if (k) { SASLcontext = Crypto.SHA256.SCRAM(); word = SASLcontext.client_1(); authresponse(({ "SCRAM-SHA-256", 0, sprintf("%4c", sizeof(word)), word })); } else errtype = PROTOCOLUNSUPPORTED; #ifdef PG_DEBUG if (msglen != 1) errtype = PROTOCOLERROR; msglen = 0; #endif break; } case 11: { PD("AuthenticationSASLContinue\n"); string response; if (response = SASLcontext.client_2(cr->read(msglen), pass)) authresponse(response); else errtype = PROTOCOLERROR; #ifdef PG_DEBUG msglen = 0; #endif break; } case 12: PD("AuthenticationSASLFinal\n"); if (SASLcontext.client_3(cr->read(msglen))) SASLcontext = 0; // Clears context and approves server else errtype = PROTOCOLERROR; #ifdef PG_DEBUG msglen = 0; #endif break; default: PD("Unknown Authentication Method %c\n", authtype); errtype = PROTOCOLUNSUPPORTED; break; } switch (errtype) { default: case PROTOCOLUNSUPPORTED: error("Unsupported authenticationmethod %c\n", authtype); case NOERROR: break; } break; } case 'K': msglen -= 4 + 4; backendpid = cr->read_int32(); cancelsecret = cr->read(msglen); #ifdef PG_DEBUG PD("BackendKeyData %O\n", cancelsecret); msglen = 0; #endif break; case 'S': { PD("ParameterStatus "); msglen -= 4; array(string) ts = reads(); #ifdef PG_DEBUG if (sizeof(ts) == 2) { #endif runtimeparameter[ts[0]] = ts[1]; #ifdef PG_DEBUG PD("%O=%O\n", ts[0], ts[1]); } else errtype = PROTOCOLERROR; #endif break; } case '3': #ifdef PG_DEBUG PD("CloseComplete\n"); msglen -= 4; #endif break; case 'Z': { backendstatus = cr->read_int8(); #ifdef PG_DEBUG msglen -= 4 + 1; PD("ReadyForQuery %c\n", backendstatus); #endif #ifdef PG_DEBUGMORE showportalstack("READYFORQUERY"); #endif int keeplooking; do for (keeplooking = 0; objectp(portal); portal = qportals->read()) { #ifdef PG_DEBUG showportal(msgtype); #endif if (backendstatus == 'I' && intransaction && portal->transtype != TRANSEND) keeplooking = 1; portal->_purgeportal(); } while (keeplooking && (portal = qportals->read())); if (backendstatus == 'I') intransaction = 0; foreach (qportals->peek_array(); ; Result qp) { if (objectp(qp) && qp._synctransact && qp._synctransact <= portal) { PD("Checking portal %O %d<=%d\n", qp._portalname, qp._synctransact, portal); qp->_purgeportal(); } } portal = 0; #ifdef PG_DEBUGMORE showportalstack("AFTER READYFORQUERY"); #endif readyforquerycount--; function (:void) cb; destruct(waitforauthready); if (cb = readyforquery_cb) readyforquery_cb = 0, cb(); break; } case '1': #ifdef PG_DEBUG PD("ParseComplete portal %O\n", portal); msglen -= 4; #endif break; case 't': { array a; #ifdef PG_DEBUG int cols = cr->read_int16(); PD("%O ParameterDescription %d values\n", portal._query, cols); msglen -= 4 + 2 + 4 * cols; a = cr->read_ints(cols, 4); #else a = cr->read_ints(cr->read_int16(), 4); #endif #ifdef PG_DEBUGMORE PD("%O\n", a); #endif if (portal._tprepared) portal._tprepared.datatypeoid = a; Thread.Thread(tryprepbind, portal, a); break; } case 'T': { array a, at; int cols = cr->read_int16(); #ifdef PG_DEBUG PD("RowDescription %d columns %O\n", cols, portal._query); msglen -= 4 + 2; #endif at = allocate(cols); foreach (a = allocate(cols); int i; ) { string s = cr->read_cstring(); mapping(string:mixed) res = (["name":s]); #ifdef PG_DEBUG msglen -= sizeof(s) + 1 + 4 + 2 + 4 + 2 + 4 + 2; res.tableoid = cr->read_int32() || UNDEFINED; res.tablecolattr = cr->read_int16() || UNDEFINED; #else cr->consume(6); #endif at[i] = cr->read_int32(); #ifdef PG_DEBUG res.type = at[i]; { int len = cr->read_sint(2); res.length = len >= 0 ? len : "variable"; } res.atttypmod = cr->read_int32(); /* formatcode contains just a zero when Bind has not been issued * yet, but the content is irrelevant because it's determined * at query time */ res.formatcode = cr->read_int16(); #else cr->consume(8); #endif a[i] = res; } #ifdef PG_DEBUGMORE PD("%O\n", a); #endif if (portal._forcetext) portal->_setrowdesc(a, at); // Do not consume queued portal else { portal->_processrowdesc(a, at); portal = 0; } break; } case 'n': { #ifdef PG_DEBUG msglen -= 4; PD("NoData %O\n", portal._query); #endif portal._fetchlimit = 0; // disables subsequent Executes portal->_processrowdesc(({}), ({})); portal = 0; break; } case 'H': portal->_processrowdesc(@getcols()); PD("CopyOutResponse %O\n", portal. _query); break; case '2': { mapping tp; #ifdef PG_DEBUG msglen -= 4; PD("%O BindComplete\n", portal._portalname); #endif if (tp = portal._tprepared) { int tend = gethrtime(); int tstart = tp.trun; if (tend == tstart) m_delete(prepareds, portal._query); else { tp.hits++; totalhits++; if (!tp.preparedname) { if (sizeof(portal._preparedname)) { PD("Finalising stored statement %s\n", portal._preparedname); tp.preparedname = portal._preparedname; } tstart = tend - tstart; if (!tp.tparse || tp.tparse>tstart) tp.tparse = tstart; } tp.trunstart = tend; } } break; } case 'D': msglen -= 4; #ifdef PG_DEBUG #ifdef PG_DEBUGMORE PD("%O DataRow %d bytes\n", portal._portalname, msglen); #endif datarowdebugcount++; if (!datarowdebug) datarowdebug = sprintf( "%O DataRow %d bytes", portal._portalname, msglen); #endif #ifdef PG_DEBUG msglen= #endif portal->_decodedata(msglen, runtimeparameter[CLIENT_ENCODING]); break; case 's': #ifdef PG_DEBUG PD("%O PortalSuspended\n", portal._portalname); msglen -= 4; #endif portal = 0; break; case 'C': { msglen -= 4; #ifdef PG_DEBUG if (msglen < 1) errtype = PROTOCOLERROR; #endif string s = cr->read(msglen - 1); PD("%O CommandComplete %O\n", objectp(portal) && portal._portalname, s); #ifdef PG_DEBUG if (cr->read_int8()) errtype = PROTOCOLERROR; msglen = 0; #else cr->consume(1); #endif #ifdef PG_DEBUGMORE showportalstack("COMMANDCOMPLETE"); #endif if (!portal._forcetext) { portal->_storetiming(); portal->_releasesession(s); portal = 0; } break; } case 'I': #ifdef PG_DEBUG PD("EmptyQueryResponse %O\n", portal._portalname); msglen -= 4; #endif #ifdef PG_DEBUGMORE showportalstack("EMPTYQUERYRESPONSE"); #endif if (!portal._forcetext) { portal->_releasesession(); portal = 0; } break; case 'd': PD("%O CopyData\n", portal._portalname); portal->_storetiming(); msglen -= 4; #ifdef PG_DEBUG if (msglen < 0) errtype = PROTOCOLERROR; #endif portal->_processdataready(({cr->read(msglen)}), msglen); #ifdef PG_DEBUG msglen = 0; #endif break; case 'G': portal->_releasestatement(); portal->_setrowdesc(@getcols()); PD("%O CopyInResponse\n", portal._portalname); portal._state = COPYINPROGRESS; break; case 'c': #ifdef PG_DEBUG PD("%O CopyDone\n", portal._portalname); msglen -= 4; #endif if (!portal._forcetext) portal = 0; break; case 'E': { #ifdef PG_DEBUGMORE showportalstack("ERRORRESPONSE"); #endif if (portalsinflight->drained() && !readyforquerycount) sendsync(); PD("%O ErrorResponse %O\n", objectp(portal) && (portal._portalname || portal._preparedname), objectp(portal) && portal._query); mapping(string:string) msgresponse; msgresponse = getresponse(); warningsdropcount += warningscollected; warningscollected = 0; untolderror = 1; switch (msgresponse.C) { case "P0001": lastmessage = ({sprintf("%s: %s", msgresponse.S, msgresponse.M)}); USERERROR(a2nls(lastmessage +({pinpointerror(portal._query, msgresponse.P)}) +showbindings(portal))); case "53000":case "53100":case "53200":case "53300":case "53400": case "57P01":case "57P02":case "57P03":case "57P04":case "3D000": case "34000":case "08P01": preplastmessage(msgresponse); PD(a2nls(lastmessage)); throw(msgisfatal(msgresponse)); case "42P05": errtype = PROTOCOLERROR; case "XX000":case "42883":case "42P01": invalidatecache = 1; default: preplastmessage(msgresponse); if (msgresponse.D) lastmessage += ({msgresponse.D}); if (msgresponse.H) lastmessage += ({msgresponse.H}); lastmessage += ({ pinpointerror(objectp(portal) && portal._query, msgresponse.P) + pinpointerror(msgresponse.q, msgresponse.p)}); if (msgresponse.W) lastmessage += ({msgresponse.W}); if (objectp(portal)) lastmessage += showbindings(portal); switch (msgresponse.S) { case "PANIC":werror(a2nls(lastmessage)); } case "25P02": // Preserve last error message USERERROR(a2nls(lastmessage)); // Implicitly closed portal } break; } case 'N': { PD("NoticeResponse\n"); mapping(string:string) msgresponse = getresponse(); switch (msgresponse.C) { default: if (clearmessage) { warningsdropcount += warningscollected; clearmessage = warningscollected = 0; lastmessage = ({}); } warningscollected++; lastmessage = ({sprintf("%s %s: %s", msgresponse.S, msgresponse.C, msgresponse.M)}); int val; if (val = msgisfatal(msgresponse)) { // Some warnings are fatal preplastmessage(msgresponse); PD(a2nls(lastmessage)); throw(val); } case "25P01": // Suppress some warnings break; } break; } case 'A': { PD("NotificationResponse\n"); msglen -= 4 + 4; int pid = cr->read_int32(); string condition, extrainfo; { array(string) ts = reads(); switch (sizeof(ts)) { #if PG_DEBUG case 0: errtype = PROTOCOLERROR; break; default: errtype = PROTOCOLERROR; #endif case 2: extrainfo = ts[1]; case 1: condition = ts[0]; } } PD("%d %s\n%s\n", pid, condition, extrainfo); runcallback(pid, condition, extrainfo); break; } default: if (msgtype != -1) { string s; PD("Unknown message received %c\n", msgtype); s = cr->read(msglen -= 4); PD("%O\n", s); #ifdef PG_DEBUG msglen = 0; #endif errtype = PROTOCOLUNSUPPORTED; } else { lastmessage += ({ sprintf("Connection lost to database %s@%s:%d/%s %d\n", user, host, port, database, backendpid)}); runcallback(backendpid, "_lost", ""); if (!waitforauthready) throw(0); USERERROR(a2nls(lastmessage)); } break; } #ifdef PG_DEBUG if (msglen) errtype = PROTOCOLERROR; #endif { string msg; switch (errtype) { case PROTOCOLUNSUPPORTED: msg = sprintf("Unsupported servermessage received %c\n", msgtype); break; case PROTOCOLERROR: msg = sprintf("Protocol error with database %s", host_info()); break; case NOERROR: continue; // Normal production loop } error(a2nls(lastmessage += ({msg}))); } }; // We only get here if there is an error if (err == MAGICTERMINATE) { // Announce connection termination to server catch { void|bufcon|conxsess cs = ci->start(); CHAIN(cs)->add(PGSYNC)->add("X\0\0\0\4"); cs->sendcmd(SENDOUT); }; terminating = 1; err = 0; } else if (stringp(err)) { #ifdef PG_DEBUGMORE showportalstack("THROWN"); #endif stasherror(portal, err); portal = 0; if (!waitforauthready) continue; // Only continue if authentication did not fail } break; } PD("Closing database processloop %s\n", err ? describe_backtrace(err) : ""); delayederror = err; if (objectp(portal)) { #ifdef PG_DEBUG showportal(0); #endif portal->_purgeportal(); } destruct(waitforauthready); termlock = 1; if (err && !stringp(err)) throw(err); }; catch { unnamedstatement = 0; termlock = 1; if (err) { PD("Terminating processloop due to %s\n", describe_backtrace(err)); delayederror = err; } destruct(waitforauthready); c->purge(); }; } final void close() { throwdelayederror(this); { Thread.MutexKey lock; if (unnamedstatement && !termlock) termlock = unnamedstatement->lock(1); foreach (c->runningportals; Result result; ) if (result->_state < CLOSED) catch(result->status_command_complete()); if (c) // Prevent trivial backtraces c->close(); if (unnamedstatement) lock = unnamedstatement->lock(1); if (c) c->purge(); } destruct(waitforauthready); } protected void _destruct() { string errstring; mixed err = catch(close()); clients[this] = 0; if (untolderror) { /* * Flush out any asynchronously reported errors to stderr; because we are * inside a destructor, throwing an error will not work anymore. * Warnings will be silently discarded at this point. */ catch { // Use yet another catch for exceptions in backtraces lastmessage = filter(lastmessage, lambda(string val) { return has_prefix(val, "ERROR ") || has_prefix(val, "FATAL "); }); if (err || (err = catch(errstring = geterror(1)))) werror(describe_backtrace(err)); else if (errstring && sizeof(errstring)) werror("%s\n", errstring); // Add missing terminating newline }; } } final void sendsync() { readyforquerycount++; c->start()->sendcmd(SYNCSEND); } private void runcallback(int pid, string condition, string extrainfo) { array cb; if (condition == "_lost") destruct(c); if ((cb = notifylist[condition] || notifylist[""]) && (pid != backendpid || sizeof(cb) > 1 && cb[1])) callout(cb[0], 0, pid, condition, extrainfo, @cb[2..]); } private inline void closestatement( bufcon|conxsess plugbuffer, string oldprep) { closestatement(plugbuffer, oldprep); } }; #pragma deprecation_warnings //! @class sql_result //! @deprecated Result //! @endclass __deprecated__(program(Result)) sql_result = (__deprecated__(program(Result)))Result;

pike.git/ lib/ modules/ Sql.pmod/ pgsql_util.pmod > b39dd78c0b94f12b9d2ae40c0f4cbb8a95a56134 [Annotate]