Re: [GENERAL] PL/Perl compilation error
| От | Bruce Momjian |
|---|---|
| Тема | Re: [GENERAL] PL/Perl compilation error |
| Дата | |
| Msg-id | 200010161836.OAA25089@candle.pha.pa.us обсуждение исходный текст |
| Список | pgsql-hackers |
I can not apply this. Seems it has changed in the current tree. Here is the current plperl.c file. > Bruce Momjian wrote: > > > Can you send me a patch? > > > > > Hi, > > > > > > I have take a look to the source code concerning PL/Perl, it seems that 2 variables > > > have a bad call : errgv and na. > > > > > > If you replace them by their normal call (in 5.6.0) PL_errgv and PL_na you will get > > > success to compile the lib plperl.so. > > > > > This patch (simple diff) applies to postgresql-7.0.2. > See attachment... > > Regards > > Gilles DAROLD > > > > 328c328 > < if (SvTRUE(GvSV(PL_errgv))) > --- > > if (SvTRUE(GvSV(errgv))) > 334c334 > < elog(ERROR, "creation of function failed : %s", SvPV(GvSV(PL_errgv), PL_na)); > --- > > elog(ERROR, "creation of function failed : %s", SvPV(GvSV(errgv), na)); > 444c444 > < if (SvTRUE(GvSV(PL_errgv))) > --- > > if (SvTRUE(GvSV(errgv))) > 450c450 > < elog(ERROR, "plperl : error from function : %s", SvPV(GvSV(PL_errgv), PL_na)); > --- > > elog(ERROR, "plperl : error from function : %s", SvPV(GvSV(errgv), na)); > 654c654 > < (SvPV(perlret, PL_na), > --- > > (SvPV(perlret, na), > 2192c2192 > < output = perl_eval_pv(SvPV(output, PL_na), TRUE); > --- > > output = perl_eval_pv(SvPV(output, na), TRUE); -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 853-3000 + If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania 19026 /********************************************************************** * plperl.c - perl as a procedural language for PostgreSQL * * IDENTIFICATION * * This software is copyrighted by Mark Hollomon * but is shameless cribbed from pltcl.c by Jan Weick. * * The author hereby grants permission to use, copy, modify, * distribute, and license this software and its documentation * for any purpose, provided that existing copyright notices are * retained in all copies and that this notice is included * verbatim in any distributions. No written agreement, license, * or royalty fee is required for any of the authorized uses. * Modifications to this software may be copyrighted by their * author and need not follow the licensing terms described * here, provided that the new terms are clearly indicated on * the first page of each file where they apply. * * IN NO EVENT SHALL THE AUTHOR OR DISTRIBUTORS BE LIABLE TO ANY * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR * CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF THIS * SOFTWARE, ITS DOCUMENTATION, OR ANY DERIVATIVES THEREOF, EVEN * IF THE AUTHOR HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * THE AUTHOR AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR * PURPOSE, AND NON-INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON * AN "AS IS" BASIS, AND THE AUTHOR AND DISTRIBUTORS HAVE NO * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, * ENHANCEMENTS, OR MODIFICATIONS. * * IDENTIFICATION * $Header: /home/projects/pgsql/cvsroot/pgsql/src/pl/plperl/plperl.c,v 1.13 2000/09/12 04:28:30 momjian Exp $ * **********************************************************************/ /* system stuff */ #include <stdio.h> #include <stdlib.h> #include <stdarg.h> #include <unistd.h> #include <fcntl.h> #include <string.h> #include <setjmp.h> /* postgreSQL stuff */ #include "executor/spi.h" #include "commands/trigger.h" #include "utils/elog.h" #include "fmgr.h" #include "access/heapam.h" #include "tcop/tcopprot.h" #include "utils/syscache.h" #include "catalog/pg_proc.h" #include "catalog/pg_type.h" /* perl stuff */ /* * Evil Code Alert * * both posgreSQL and perl try to do 'the right thing' * and provide union semun if the platform doesn't define * it in a system header. * psql uses HAVE_UNION_SEMUN * perl uses HAS_UNION_SEMUN * together, they cause compile errors. * If we need it, the psql headers above will provide it. * So we tell perl that we have it. */ #ifndef HAS_UNION_SEMUN #define HAS_UNION_SEMUN #endif #include "EXTERN.h" #include "perl.h" /********************************************************************** * The information we cache about loaded procedures **********************************************************************/ typedef struct plperl_proc_desc { char *proname; FmgrInfo result_in_func; Oid result_in_elem; int result_in_len; int nargs; FmgrInfo arg_out_func[FUNC_MAX_ARGS]; Oid arg_out_elem[FUNC_MAX_ARGS]; int arg_out_len[FUNC_MAX_ARGS]; int arg_is_rel[FUNC_MAX_ARGS]; SV *reference; } plperl_proc_desc; /********************************************************************** * The information we cache about prepared and saved plans **********************************************************************/ typedef struct plperl_query_desc { char qname[20]; void *plan; int nargs; Oid *argtypes; FmgrInfo *arginfuncs; Oid *argtypelems; Datum *argvalues; int *arglen; } plperl_query_desc; /********************************************************************** * Global data **********************************************************************/ static int plperl_firstcall = 1; static int plperl_call_level = 0; static int plperl_restart_in_progress = 0; static PerlInterpreter *plperl_safe_interp = NULL; static HV *plperl_proc_hash = NULL; #if REALLYHAVEITONTHEBALL static Tcl_HashTable *plperl_query_hash = NULL; #endif /********************************************************************** * Forward declarations **********************************************************************/ static void plperl_init_all(void); static void plperl_init_safe_interp(void); Datum plperl_call_handler(PG_FUNCTION_ARGS); static Datum plperl_func_handler(PG_FUNCTION_ARGS); static SV *plperl_build_tuple_argument(HeapTuple tuple, TupleDesc tupdesc); static void plperl_init_shared_libs(void); #ifdef REALLYHAVEITONTHEBALL static HeapTuple plperl_trigger_handler(PG_FUNCTION_ARGS); static int plperl_elog(ClientData cdata, Tcl_Interp *interp, int argc, char *argv[]); static int plperl_quote(ClientData cdata, Tcl_Interp *interp, int argc, char *argv[]); static int plperl_SPI_exec(ClientData cdata, Tcl_Interp *interp, int argc, char *argv[]); static int plperl_SPI_prepare(ClientData cdata, Tcl_Interp *interp, int argc, char *argv[]); static int plperl_SPI_execp(ClientData cdata, Tcl_Interp *interp, int argc, char *argv[]); static void plperl_set_tuple_values(Tcl_Interp *interp, char *arrayname, int tupno, HeapTuple tuple, TupleDesc tupdesc); #endif /********************************************************************** * plperl_init_all() - Initialize all **********************************************************************/ static void plperl_init_all(void) { /************************************************************ * Do initialization only once ************************************************************/ if (!plperl_firstcall) return; /************************************************************ * Destroy the existing safe interpreter ************************************************************/ if (plperl_safe_interp != NULL) { perl_destruct(plperl_safe_interp); perl_free(plperl_safe_interp); plperl_safe_interp = NULL; } /************************************************************ * Free the proc hash table ************************************************************/ if (plperl_proc_hash != NULL) { hv_undef(plperl_proc_hash); SvREFCNT_dec((SV *) plperl_proc_hash); plperl_proc_hash = NULL; } /************************************************************ * Free the prepared query hash table ************************************************************/ /* * if (plperl_query_hash != NULL) { } */ /************************************************************ * Now recreate a new safe interpreter ************************************************************/ plperl_init_safe_interp(); plperl_firstcall = 0; return; } /********************************************************************** * plperl_init_safe_interp() - Create the safe Perl interpreter **********************************************************************/ static void plperl_init_safe_interp(void) { char *embedding[3] = { "", "-e", /* no commas between the next 4 please. They are supposed to be one string */ "require Safe; SPI::bootstrap();" "sub ::mksafefunc { my $x = new Safe; $x->permit_only(':default');" "$x->share(qw[&elog &DEBUG &NOTICE &NOIND &ERROR]);" " return $x->reval(qq[sub { $_[0] }]); }" }; plperl_safe_interp = perl_alloc(); if (!plperl_safe_interp) elog(ERROR, "plperl_init_safe_interp(): could not allocate perl interpreter"); perl_construct(plperl_safe_interp); perl_parse(plperl_safe_interp, plperl_init_shared_libs, 3, embedding, NULL); perl_run(plperl_safe_interp); /************************************************************ * Initialize the proc and query hash tables ************************* ***********************************/ plperl_proc_hash = newHV(); } /********************************************************************** * plperl_call_handler - This is the only visible function * of the PL interpreter. The PostgreSQL * function manager and trigger manager * call this function for execution of * perl procedures. **********************************************************************/ /* keep non-static */ Datum plperl_call_handler(PG_FUNCTION_ARGS) { Datum retval; /************************************************************ * Initialize interpreters on first call ************************************************************/ if (plperl_firstcall) plperl_init_all(); /************************************************************ * Connect to SPI manager ************************************************************/ if (SPI_connect() != SPI_OK_CONNECT) elog(ERROR, "plperl: cannot connect to SPI manager"); /************************************************************ * Keep track about the nesting of Tcl-SPI-Tcl-... calls ************************************************************/ plperl_call_level++; /************************************************************ * Determine if called as function or trigger and * call appropriate subhandler ************************************************************/ if (CALLED_AS_TRIGGER(fcinfo)) { elog(ERROR, "plperl: can't use perl in triggers yet."); /* * retval = PointerGetDatum(plperl_trigger_handler(fcinfo)); */ /* make the compiler happy */ retval = (Datum) 0; } else retval = plperl_func_handler(fcinfo); plperl_call_level--; return retval; } /********************************************************************** * plperl_create_sub() - calls the perl interpreter to * create the anonymous subroutine whose text is in the SV. * Returns the SV containing the RV to the closure. **********************************************************************/ static SV * plperl_create_sub(char * s) { dSP; SV *subref = NULL; int count; ENTER; SAVETMPS; PUSHMARK(SP); XPUSHs(sv_2mortal(newSVpv(s,0))); PUTBACK; count = perl_call_pv("mksafefunc", G_SCALAR | G_EVAL | G_KEEPERR); SPAGAIN; if (SvTRUE(ERRSV)) { POPs; PUTBACK; FREETMPS; LEAVE; elog(ERROR, "creation of function failed : %s", SvPV_nolen(ERRSV)); } if (count != 1) { elog(ERROR, "creation of function failed - no return from mksafefunc"); } /* * need to make a deep copy of the return. it comes off the stack as a * temporary. */ subref = newSVsv(POPs); if (!SvROK(subref)) { PUTBACK; FREETMPS; LEAVE; /* * subref is our responsibility because it is not mortal */ SvREFCNT_dec(subref); elog(ERROR, "plperl_create_sub: didn't get a code ref"); } PUTBACK; FREETMPS; LEAVE; return subref; } /********************************************************************** * plperl_init_shared_libs() - * * We cannot use the DynaLoader directly to get at the Opcode * module (used by Safe.pm). So, we link Opcode into ourselves * and do the initialization behind perl's back. * **********************************************************************/ extern void boot_Opcode _((CV * cv)); extern void boot_SPI _((CV * cv)); static void plperl_init_shared_libs(void) { char *file = __FILE__; newXS("Opcode::bootstrap", boot_Opcode, file); newXS("SPI::bootstrap", boot_SPI, file); } /********************************************************************** * plperl_call_perl_func() - calls a perl function through the RV * stored in the prodesc structure. massages the input parms properly **********************************************************************/ static SV * plperl_call_perl_func(plperl_proc_desc * desc, FunctionCallInfo fcinfo) { dSP; SV *retval; int i; int count; ENTER; SAVETMPS; PUSHMARK(sp); for (i = 0; i < desc->nargs; i++) { if (desc->arg_is_rel[i]) { TupleTableSlot *slot = (TupleTableSlot *) fcinfo->arg[i]; SV *hashref; Assert(slot != NULL && ! fcinfo->argnull[i]); /* * plperl_build_tuple_argument better return a mortal SV. */ hashref = plperl_build_tuple_argument(slot->val, slot->ttc_tupleDescriptor); XPUSHs(hashref); } else { if (fcinfo->argnull[i]) { XPUSHs(&PL_sv_undef); } else { char *tmp; tmp = DatumGetCString(FunctionCall3(&(desc->arg_out_func[i]), fcinfo->arg[i], ObjectIdGetDatum(desc->arg_out_elem[i]), Int32GetDatum(desc->arg_out_len[i]))); XPUSHs(sv_2mortal(newSVpv(tmp, 0))); pfree(tmp); } } } PUTBACK; count = perl_call_sv(desc->reference, G_SCALAR | G_EVAL | G_KEEPERR); SPAGAIN; if (count != 1) { PUTBACK; FREETMPS; LEAVE; elog(ERROR, "plperl : didn't get a return item from function"); } if (SvTRUE(ERRSV)) { POPs; PUTBACK; FREETMPS; LEAVE; elog(ERROR, "plperl : error from function : %s", SvPV_nolen(ERRSV)); } retval = newSVsv(POPs); PUTBACK; FREETMPS; LEAVE; return retval; } /********************************************************************** * plperl_func_handler() - Handler for regular function calls **********************************************************************/ static Datum plperl_func_handler(PG_FUNCTION_ARGS) { int i; char internal_proname[512]; int proname_len; plperl_proc_desc *prodesc; SV *perlret; Datum retval; sigjmp_buf save_restart; /************************************************************ * Build our internal proc name from the functions Oid ************************************************************/ sprintf(internal_proname, "__PLPerl_proc_%u", fcinfo->flinfo->fn_oid); proname_len = strlen(internal_proname); /************************************************************ * Lookup the internal proc name in the hashtable ************************************************************/ if (!hv_exists(plperl_proc_hash, internal_proname, proname_len)) { /************************************************************ * If we haven't found it in the hashtable, we analyze * the functions arguments and returntype and store * the in-/out-functions in the prodesc block and create * a new hashtable entry for it. * * Then we load the procedure into the safe interpreter. ************************************************************/ HeapTuple procTup; HeapTuple typeTup; Form_pg_proc procStruct; Form_pg_type typeStruct; char *proc_source; /************************************************************ * Allocate a new procedure description block ************************************************************/ prodesc = (plperl_proc_desc *) malloc(sizeof(plperl_proc_desc)); prodesc->proname = malloc(strlen(internal_proname) + 1); strcpy(prodesc->proname, internal_proname); /************************************************************ * Lookup the pg_proc tuple by Oid ************************************************************/ procTup = SearchSysCacheTuple(PROCOID, ObjectIdGetDatum(fcinfo->flinfo->fn_oid), 0, 0, 0); if (!HeapTupleIsValid(procTup)) { free(prodesc->proname); free(prodesc); elog(ERROR, "plperl: cache lookup for proc %u failed", fcinfo->flinfo->fn_oid); } procStruct = (Form_pg_proc) GETSTRUCT(procTup); /************************************************************ * Get the required information for input conversion of the * return value. ************************************************************/ typeTup = SearchSysCacheTuple(TYPEOID, ObjectIdGetDatum(procStruct->prorettype), 0, 0, 0); if (!HeapTupleIsValid(typeTup)) { free(prodesc->proname); free(prodesc); elog(ERROR, "plperl: cache lookup for return type %u failed", procStruct->prorettype); } typeStruct = (Form_pg_type) GETSTRUCT(typeTup); if (typeStruct->typrelid != InvalidOid) { free(prodesc->proname); free(prodesc); elog(ERROR, "plperl: return types of tuples not supported yet"); } fmgr_info(typeStruct->typinput, &(prodesc->result_in_func)); prodesc->result_in_elem = (Oid) (typeStruct->typelem); prodesc->result_in_len = typeStruct->typlen; /************************************************************ * Get the required information for output conversion * of all procedure arguments ************************************************************/ prodesc->nargs = procStruct->pronargs; for (i = 0; i < prodesc->nargs; i++) { typeTup = SearchSysCacheTuple(TYPEOID, ObjectIdGetDatum(procStruct->proargtypes[i]), 0, 0, 0); if (!HeapTupleIsValid(typeTup)) { free(prodesc->proname); free(prodesc); elog(ERROR, "plperl: cache lookup for argument type %u failed", procStruct->proargtypes[i]); } typeStruct = (Form_pg_type) GETSTRUCT(typeTup); if (typeStruct->typrelid != InvalidOid) prodesc->arg_is_rel[i] = 1; else prodesc->arg_is_rel[i] = 0; fmgr_info(typeStruct->typoutput, &(prodesc->arg_out_func[i])); prodesc->arg_out_elem[i] = (Oid) (typeStruct->typelem); prodesc->arg_out_len[i] = typeStruct->typlen; } /************************************************************ * create the text of the anonymous subroutine. * we do not use a named subroutine so that we can call directly * through the reference. * ************************************************************/ proc_source = DatumGetCString(DirectFunctionCall1(textout, PointerGetDatum(&procStruct->prosrc))); /************************************************************ * Create the procedure in the interpreter ************************************************************/ prodesc->reference = plperl_create_sub(proc_source); pfree(proc_source); if (!prodesc->reference) { free(prodesc->proname); free(prodesc); elog(ERROR, "plperl: cannot create internal procedure %s", internal_proname); } /************************************************************ * Add the proc description block to the hashtable ************************************************************/ hv_store(plperl_proc_hash, internal_proname, proname_len, newSViv((IV) prodesc), 0); } else { /************************************************************ * Found the proc description block in the hashtable ************************************************************/ prodesc = (plperl_proc_desc *) SvIV(*hv_fetch(plperl_proc_hash, internal_proname, proname_len, 0)); } memcpy(&save_restart, &Warn_restart, sizeof(save_restart)); if (sigsetjmp(Warn_restart, 1) != 0) { memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); plperl_restart_in_progress = 1; if (--plperl_call_level == 0) plperl_restart_in_progress = 0; siglongjmp(Warn_restart, 1); } /************************************************************ * Call the Perl function ************************************************************/ perlret = plperl_call_perl_func(prodesc, fcinfo); /************************************************************ * Disconnect from SPI manager and then create the return * values datum (if the input function does a palloc for it * this must not be allocated in the SPI memory context * because SPI_finish would free it). ************************************************************/ if (SPI_finish() != SPI_OK_FINISH) elog(ERROR, "plperl: SPI_finish() failed"); /* XXX is this the approved way to check for an undef result? */ if (perlret == &PL_sv_undef) { retval = (Datum) 0; fcinfo->isnull = true; } else { retval = FunctionCall3(&prodesc->result_in_func, PointerGetDatum(SvPV_nolen(perlret)), ObjectIdGetDatum(prodesc->result_in_elem), Int32GetDatum(prodesc->result_in_len)); } SvREFCNT_dec(perlret); memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); if (plperl_restart_in_progress) { if (--plperl_call_level == 0) plperl_restart_in_progress = 0; siglongjmp(Warn_restart, 1); } return retval; } #ifdef REALLYHAVEITONTHEBALL /********************************************************************** * plperl_trigger_handler() - Handler for trigger calls **********************************************************************/ static HeapTuple plperl_trigger_handler(PG_FUNCTION_ARGS) { TriggerData *trigdata = (TriggerData *) fcinfo->context; char internal_proname[512]; char *stroid; Tcl_HashEntry *hashent; int hashnew; plperl_proc_desc *prodesc; TupleDesc tupdesc; HeapTuple rettup; Tcl_DString tcl_cmd; Tcl_DString tcl_trigtup; Tcl_DString tcl_newtup; int tcl_rc; int i; int *modattrs; Datum *modvalues; char *modnulls; int ret_numvals; char **ret_values; sigjmp_buf save_restart; /************************************************************ * Build our internal proc name from the functions Oid ************************************************************/ sprintf(internal_proname, "__PLPerl_proc_%u", fcinfo->flinfo->fn_oid); /************************************************************ * Lookup the internal proc name in the hashtable ************************************************************/ hashent = Tcl_FindHashEntry(plperl_proc_hash, internal_proname); if (hashent == NULL) { /************************************************************ * If we haven't found it in the hashtable, * we load the procedure into the safe interpreter. ************************************************************/ Tcl_DString proc_internal_def; Tcl_DString proc_internal_body; HeapTuple procTup; Form_pg_proc procStruct; char *proc_source; /************************************************************ * Allocate a new procedure description block ************************************************************/ prodesc = (plperl_proc_desc *) malloc(sizeof(plperl_proc_desc)); memset(prodesc, 0, sizeof(plperl_proc_desc)); prodesc->proname = malloc(strlen(internal_proname) + 1); strcpy(prodesc->proname, internal_proname); /************************************************************ * Lookup the pg_proc tuple by Oid ************************************************************/ procTup = SearchSysCacheTuple(PROCOID, ObjectIdGetDatum(fcinfo->flinfo->fn_oid), 0, 0, 0); if (!HeapTupleIsValid(procTup)) { free(prodesc->proname); free(prodesc); elog(ERROR, "plperl: cache lookup for proc %u failed", fcinfo->flinfo->fn_oid); } procStruct = (Form_pg_proc) GETSTRUCT(procTup); /************************************************************ * Create the tcl command to define the internal * procedure ************************************************************/ Tcl_DStringInit(&proc_internal_def); Tcl_DStringInit(&proc_internal_body); Tcl_DStringAppendElement(&proc_internal_def, "proc"); Tcl_DStringAppendElement(&proc_internal_def, internal_proname); Tcl_DStringAppendElement(&proc_internal_def, "TG_name TG_relid TG_relatts TG_when TG_level TG_op __PLTcl_Tup_NEW __PLTcl_Tup_OLD args"); /************************************************************ * prefix procedure body with * upvar #0 <internal_procname> GD * and with appropriate setting of NEW, OLD, * and the arguments as numerical variables. ************************************************************/ Tcl_DStringAppend(&proc_internal_body, "upvar #0 ", -1); Tcl_DStringAppend(&proc_internal_body, internal_proname, -1); Tcl_DStringAppend(&proc_internal_body, " GD\n", -1); Tcl_DStringAppend(&proc_internal_body, "array set NEW $__PLTcl_Tup_NEW\n", -1); Tcl_DStringAppend(&proc_internal_body, "array set OLD $__PLTcl_Tup_OLD\n", -1); Tcl_DStringAppend(&proc_internal_body, "set i 0\n" "set v 0\n" "foreach v $args {\n" " incr i\n" " set $i $v\n" "}\n" "unset i v\n\n", -1); proc_source = DatumGetCString(DirectFunctionCall1(textout, PointerGetDatum(&procStruct->prosrc))); Tcl_DStringAppend(&proc_internal_body, proc_source, -1); pfree(proc_source); Tcl_DStringAppendElement(&proc_internal_def, Tcl_DStringValue(&proc_internal_body)); Tcl_DStringFree(&proc_internal_body); /************************************************************ * Create the procedure in the safe interpreter ************************************************************/ tcl_rc = Tcl_GlobalEval(plperl_safe_interp, Tcl_DStringValue(&proc_internal_def)); Tcl_DStringFree(&proc_internal_def); if (tcl_rc != TCL_OK) { free(prodesc->proname); free(prodesc); elog(ERROR, "plperl: cannot create internal procedure %s - %s", internal_proname, plperl_safe_interp->result); } /************************************************************ * Add the proc description block to the hashtable ************************************************************/ hashent = Tcl_CreateHashEntry(plperl_proc_hash, prodesc->proname, &hashnew); Tcl_SetHashValue(hashent, (ClientData) prodesc); } else { /************************************************************ * Found the proc description block in the hashtable ************************************************************/ prodesc = (plperl_proc_desc *) Tcl_GetHashValue(hashent); } tupdesc = trigdata->tg_relation->rd_att; /************************************************************ * Create the tcl command to call the internal * proc in the safe interpreter ************************************************************/ Tcl_DStringInit(&tcl_cmd); Tcl_DStringInit(&tcl_trigtup); Tcl_DStringInit(&tcl_newtup); /************************************************************ * We call external functions below - care for elog(ERROR) ************************************************************/ memcpy(&save_restart, &Warn_restart, sizeof(save_restart)); if (sigsetjmp(Warn_restart, 1) != 0) { memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); Tcl_DStringFree(&tcl_cmd); Tcl_DStringFree(&tcl_trigtup); Tcl_DStringFree(&tcl_newtup); plperl_restart_in_progress = 1; if (--plperl_call_level == 0) plperl_restart_in_progress = 0; siglongjmp(Warn_restart, 1); } /* The procedure name */ Tcl_DStringAppendElement(&tcl_cmd, internal_proname); /* The trigger name for argument TG_name */ Tcl_DStringAppendElement(&tcl_cmd, trigdata->tg_trigger->tgname); /* The oid of the trigger relation for argument TG_relid */ stroid = DatumGetCString(DirectFunctionCall1(oidout, ObjectIdGetDatum(trigdata->tg_relation->rd_id))); Tcl_DStringAppendElement(&tcl_cmd, stroid); pfree(stroid); /* A list of attribute names for argument TG_relatts */ Tcl_DStringAppendElement(&tcl_trigtup, ""); for (i = 0; i < tupdesc->natts; i++) Tcl_DStringAppendElement(&tcl_trigtup, tupdesc->attrs[i]->attname.data); Tcl_DStringAppendElement(&tcl_cmd, Tcl_DStringValue(&tcl_trigtup)); Tcl_DStringFree(&tcl_trigtup); Tcl_DStringInit(&tcl_trigtup); /* The when part of the event for TG_when */ if (TRIGGER_FIRED_BEFORE(trigdata->tg_event)) Tcl_DStringAppendElement(&tcl_cmd, "BEFORE"); else if (TRIGGER_FIRED_AFTER(trigdata->tg_event)) Tcl_DStringAppendElement(&tcl_cmd, "AFTER"); else Tcl_DStringAppendElement(&tcl_cmd, "UNKNOWN"); /* The level part of the event for TG_level */ if (TRIGGER_FIRED_FOR_ROW(trigdata->tg_event)) Tcl_DStringAppendElement(&tcl_cmd, "ROW"); else if (TRIGGER_FIRED_FOR_STATEMENT(trigdata->tg_event)) Tcl_DStringAppendElement(&tcl_cmd, "STATEMENT"); else Tcl_DStringAppendElement(&tcl_cmd, "UNKNOWN"); /* Build the data list for the trigtuple */ plperl_build_tuple_argument(trigdata->tg_trigtuple, tupdesc, &tcl_trigtup); /* * Now the command part of the event for TG_op and data for NEW and * OLD */ if (TRIGGER_FIRED_BY_INSERT(trigdata->tg_event)) { Tcl_DStringAppendElement(&tcl_cmd, "INSERT"); Tcl_DStringAppendElement(&tcl_cmd, Tcl_DStringValue(&tcl_trigtup)); Tcl_DStringAppendElement(&tcl_cmd, ""); rettup = trigdata->tg_trigtuple; } else if (TRIGGER_FIRED_BY_DELETE(trigdata->tg_event)) { Tcl_DStringAppendElement(&tcl_cmd, "DELETE"); Tcl_DStringAppendElement(&tcl_cmd, ""); Tcl_DStringAppendElement(&tcl_cmd, Tcl_DStringValue(&tcl_trigtup)); rettup = trigdata->tg_trigtuple; } else if (TRIGGER_FIRED_BY_UPDATE(trigdata->tg_event)) { Tcl_DStringAppendElement(&tcl_cmd, "UPDATE"); plperl_build_tuple_argument(trigdata->tg_newtuple, tupdesc, &tcl_newtup); Tcl_DStringAppendElement(&tcl_cmd, Tcl_DStringValue(&tcl_newtup)); Tcl_DStringAppendElement(&tcl_cmd, Tcl_DStringValue(&tcl_trigtup)); rettup = trigdata->tg_newtuple; } else { Tcl_DStringAppendElement(&tcl_cmd, "UNKNOWN"); Tcl_DStringAppendElement(&tcl_cmd, Tcl_DStringValue(&tcl_trigtup)); Tcl_DStringAppendElement(&tcl_cmd, Tcl_DStringValue(&tcl_trigtup)); rettup = trigdata->tg_trigtuple; } memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); Tcl_DStringFree(&tcl_trigtup); Tcl_DStringFree(&tcl_newtup); /************************************************************ * Finally append the arguments from CREATE TRIGGER ************************************************************/ for (i = 0; i < trigdata->tg_trigger->tgnargs; i++) Tcl_DStringAppendElement(&tcl_cmd, trigdata->tg_trigger->tgargs[i]); /************************************************************ * Call the Tcl function ************************************************************/ tcl_rc = Tcl_GlobalEval(plperl_safe_interp, Tcl_DStringValue(&tcl_cmd)); Tcl_DStringFree(&tcl_cmd); /************************************************************ * Check the return code from Tcl and handle * our special restart mechanism to get rid * of all nested call levels on transaction * abort. ************************************************************/ if (tcl_rc == TCL_ERROR || plperl_restart_in_progress) { if (!plperl_restart_in_progress) { plperl_restart_in_progress = 1; if (--plperl_call_level == 0) plperl_restart_in_progress = 0; elog(ERROR, "plperl: %s", plperl_safe_interp->result); } if (--plperl_call_level == 0) plperl_restart_in_progress = 0; siglongjmp(Warn_restart, 1); } switch (tcl_rc) { case TCL_OK: break; default: elog(ERROR, "plperl: unsupported TCL return code %d", tcl_rc); } /************************************************************ * The return value from the procedure might be one of * the magic strings OK or SKIP or a list from array get ************************************************************/ if (SPI_finish() != SPI_OK_FINISH) elog(ERROR, "plperl: SPI_finish() failed"); if (strcmp(plperl_safe_interp->result, "OK") == 0) return rettup; if (strcmp(plperl_safe_interp->result, "SKIP") == 0) { return (HeapTuple) NULL;; } /************************************************************ * Convert the result value from the safe interpreter * and setup structures for SPI_modifytuple(); ************************************************************/ if (Tcl_SplitList(plperl_safe_interp, plperl_safe_interp->result, &ret_numvals, &ret_values) != TCL_OK) { elog(NOTICE, "plperl: cannot split return value from trigger"); elog(ERROR, "plperl: %s", plperl_safe_interp->result); } if (ret_numvals % 2 != 0) { ckfree(ret_values); elog(ERROR, "plperl: invalid return list from trigger - must have even # of elements"); } modattrs = (int *) palloc(tupdesc->natts * sizeof(int)); modvalues = (Datum *) palloc(tupdesc->natts * sizeof(Datum)); for (i = 0; i < tupdesc->natts; i++) { modattrs[i] = i + 1; modvalues[i] = (Datum) NULL; } modnulls = palloc(tupdesc->natts + 1); memset(modnulls, 'n', tupdesc->natts); modnulls[tupdesc->natts] = '\0'; /************************************************************ * Care for possible elog(ERROR)'s below ************************************************************/ if (sigsetjmp(Warn_restart, 1) != 0) { memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); ckfree(ret_values); plperl_restart_in_progress = 1; if (--plperl_call_level == 0) plperl_restart_in_progress = 0; siglongjmp(Warn_restart, 1); } i = 0; while (i < ret_numvals) { int attnum; HeapTuple typeTup; Oid typinput; Oid typelem; FmgrInfo finfo; /************************************************************ * Ignore pseudo elements with a dot name ************************************************************/ if (*(ret_values[i]) == '.') { i += 2; continue; } /************************************************************ * Get the attribute number ************************************************************/ attnum = SPI_fnumber(tupdesc, ret_values[i++]); if (attnum == SPI_ERROR_NOATTRIBUTE) elog(ERROR, "plperl: invalid attribute '%s'", ret_values[--i]); /************************************************************ * Lookup the attribute type in the syscache * for the input function ************************************************************/ typeTup = SearchSysCacheTuple(TYPEOID, ObjectIdGetDatum(tupdesc->attrs[attnum - 1]->atttypid), 0, 0, 0); if (!HeapTupleIsValid(typeTup)) { elog(ERROR, "plperl: Cache lookup for attribute '%s' type %u failed", ret_values[--i], tupdesc->attrs[attnum - 1]->atttypid); } typinput = (Oid) (((Form_pg_type) GETSTRUCT(typeTup))->typinput); typelem = (Oid) (((Form_pg_type) GETSTRUCT(typeTup))->typelem); /************************************************************ * Set the attribute to NOT NULL and convert the contents ************************************************************/ modnulls[attnum - 1] = ' '; fmgr_info(typinput, &finfo); modvalues[attnum - 1] = FunctionCall3(&finfo, CStringGetDatum(ret_values[i++]), ObjectIdGetDatum(typelem), Int32GetDatum(tupdesc->attrs[attnum-1]->atttypmod)); } rettup = SPI_modifytuple(trigdata->tg_relation, rettup, tupdesc->natts, modattrs, modvalues, modnulls); pfree(modattrs); pfree(modvalues); pfree(modnulls); if (rettup == NULL) elog(ERROR, "plperl: SPI_modifytuple() failed - RC = %d\n", SPI_result); ckfree(ret_values); memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); return rettup; } /********************************************************************** * plperl_elog() - elog() support for PLTcl **********************************************************************/ static int plperl_elog(ClientData cdata, Tcl_Interp *interp, int argc, char *argv[]) { int level; sigjmp_buf save_restart; /************************************************************ * Suppress messages during the restart process ************************************************************/ if (plperl_restart_in_progress) return TCL_ERROR; /************************************************************ * Catch the restart longjmp and begin a controlled * return though all interpreter levels if it happens ************************************************************/ memcpy(&save_restart, &Warn_restart, sizeof(save_restart)); if (sigsetjmp(Warn_restart, 1) != 0) { memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); plperl_restart_in_progress = 1; return TCL_ERROR; } if (argc != 3) { Tcl_SetResult(interp, "syntax error - 'elog level msg'", TCL_VOLATILE); return TCL_ERROR; } if (strcmp(argv[1], "NOTICE") == 0) level = NOTICE; else if (strcmp(argv[1], "WARN") == 0) level = ERROR; else if (strcmp(argv[1], "ERROR") == 0) level = ERROR; else if (strcmp(argv[1], "FATAL") == 0) level = FATAL; else if (strcmp(argv[1], "DEBUG") == 0) level = DEBUG; else if (strcmp(argv[1], "NOIND") == 0) level = NOIND; else { Tcl_AppendResult(interp, "Unknown elog level '", argv[1], "'", NULL); memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); return TCL_ERROR; } /************************************************************ * Call elog(), restore the original restart address * and return to the caller (if not catched) ************************************************************/ elog(level, argv[2]); memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); return TCL_OK; } /********************************************************************** * plperl_quote() - quote literal strings that are to * be used in SPI_exec query strings **********************************************************************/ static int plperl_quote(ClientData cdata, Tcl_Interp *interp, int argc, char *argv[]) { char *tmp; char *cp1; char *cp2; /************************************************************ * Check call syntax ************************************************************/ if (argc != 2) { Tcl_SetResult(interp, "syntax error - 'quote string'", TCL_VOLATILE); return TCL_ERROR; } /************************************************************ * Allocate space for the maximum the string can * grow to and initialize pointers ************************************************************/ tmp = palloc(strlen(argv[1]) * 2 + 1); cp1 = argv[1]; cp2 = tmp; /************************************************************ * Walk through string and double every quote and backslash ************************************************************/ while (*cp1) { if (*cp1 == '\'') *cp2++ = '\''; else { if (*cp1 == '\\') *cp2++ = '\\'; } *cp2++ = *cp1++; } /************************************************************ * Terminate the string and set it as result ************************************************************/ *cp2 = '\0'; Tcl_SetResult(interp, tmp, TCL_VOLATILE); pfree(tmp); return TCL_OK; } /********************************************************************** * plperl_SPI_exec() - The builtin SPI_exec command * for the safe interpreter **********************************************************************/ static int plperl_SPI_exec(ClientData cdata, Tcl_Interp *interp, int argc, char *argv[]) { int spi_rc; char buf[64]; int count = 0; char *arrayname = NULL; int query_idx; int i; int loop_rc; int ntuples; HeapTuple *tuples; TupleDesc tupdesc = NULL; sigjmp_buf save_restart; char *usage = "syntax error - 'SPI_exec " "?-count n? " "?-array name? query ?loop body?"; /************************************************************ * Don't do anything if we are already in restart mode ************************************************************/ if (plperl_restart_in_progress) return TCL_ERROR; /************************************************************ * Check the call syntax and get the count option ************************************************************/ if (argc < 2) { Tcl_SetResult(interp, usage, TCL_VOLATILE); return TCL_ERROR; } i = 1; while (i < argc) { if (strcmp(argv[i], "-array") == 0) { if (++i >= argc) { Tcl_SetResult(interp, usage, TCL_VOLATILE); return TCL_ERROR; } arrayname = argv[i++]; continue; } if (strcmp(argv[i], "-count") == 0) { if (++i >= argc) { Tcl_SetResult(interp, usage, TCL_VOLATILE); return TCL_ERROR; } if (Tcl_GetInt(interp, argv[i++], &count) != TCL_OK) return TCL_ERROR; continue; } break; } query_idx = i; if (query_idx >= argc) { Tcl_SetResult(interp, usage, TCL_VOLATILE); return TCL_ERROR; } /************************************************************ * Prepare to start a controlled return through all * interpreter levels on transaction abort ************************************************************/ memcpy(&save_restart, &Warn_restart, sizeof(save_restart)); if (sigsetjmp(Warn_restart, 1) != 0) { memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); plperl_restart_in_progress = 1; Tcl_SetResult(interp, "Transaction abort", TCL_VOLATILE); return TCL_ERROR; } /************************************************************ * Execute the query and handle return codes ************************************************************/ spi_rc = SPI_exec(argv[query_idx], count); memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); switch (spi_rc) { case SPI_OK_UTILITY: Tcl_SetResult(interp, "0", TCL_VOLATILE); return TCL_OK; case SPI_OK_SELINTO: case SPI_OK_INSERT: case SPI_OK_DELETE: case SPI_OK_UPDATE: sprintf(buf, "%d", SPI_processed); Tcl_SetResult(interp, buf, TCL_VOLATILE); return TCL_OK; case SPI_OK_SELECT: break; case SPI_ERROR_ARGUMENT: Tcl_SetResult(interp, "plperl: SPI_exec() failed - SPI_ERROR_ARGUMENT", TCL_VOLATILE); return TCL_ERROR; case SPI_ERROR_UNCONNECTED: Tcl_SetResult(interp, "plperl: SPI_exec() failed - SPI_ERROR_UNCONNECTED", TCL_VOLATILE); return TCL_ERROR; case SPI_ERROR_COPY: Tcl_SetResult(interp, "plperl: SPI_exec() failed - SPI_ERROR_COPY", TCL_VOLATILE); return TCL_ERROR; case SPI_ERROR_CURSOR: Tcl_SetResult(interp, "plperl: SPI_exec() failed - SPI_ERROR_CURSOR", TCL_VOLATILE); return TCL_ERROR; case SPI_ERROR_TRANSACTION: Tcl_SetResult(interp, "plperl: SPI_exec() failed - SPI_ERROR_TRANSACTION", TCL_VOLATILE); return TCL_ERROR; case SPI_ERROR_OPUNKNOWN: Tcl_SetResult(interp, "plperl: SPI_exec() failed - SPI_ERROR_OPUNKNOWN", TCL_VOLATILE); return TCL_ERROR; default: sprintf(buf, "%d", spi_rc); Tcl_AppendResult(interp, "plperl: SPI_exec() failed - ", "unknown RC ", buf, NULL); return TCL_ERROR; } /************************************************************ * Only SELECT queries fall through to here - remember the * tuples we got ************************************************************/ ntuples = SPI_processed; if (ntuples > 0) { tuples = SPI_tuptable->vals; tupdesc = SPI_tuptable->tupdesc; } /************************************************************ * Again prepare for elog(ERROR) ************************************************************/ if (sigsetjmp(Warn_restart, 1) != 0) { memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); plperl_restart_in_progress = 1; Tcl_SetResult(interp, "Transaction abort", TCL_VOLATILE); return TCL_ERROR; } /************************************************************ * If there is no loop body given, just set the variables * from the first tuple (if any) and return the number of * tuples selected ************************************************************/ if (argc == query_idx + 1) { if (ntuples > 0) plperl_set_tuple_values(interp, arrayname, 0, tuples[0], tupdesc); sprintf(buf, "%d", ntuples); Tcl_SetResult(interp, buf, TCL_VOLATILE); memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); return TCL_OK; } /************************************************************ * There is a loop body - process all tuples and evaluate * the body on each ************************************************************/ query_idx++; for (i = 0; i < ntuples; i++) { plperl_set_tuple_values(interp, arrayname, i, tuples[i], tupdesc); loop_rc = Tcl_Eval(interp, argv[query_idx]); if (loop_rc == TCL_OK) continue; if (loop_rc == TCL_CONTINUE) continue; if (loop_rc == TCL_RETURN) { memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); return TCL_RETURN; } if (loop_rc == TCL_BREAK) break; memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); return TCL_ERROR; } /************************************************************ * Finally return the number of tuples ************************************************************/ memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); sprintf(buf, "%d", ntuples); Tcl_SetResult(interp, buf, TCL_VOLATILE); return TCL_OK; } /********************************************************************** * plperl_SPI_prepare() - Builtin support for prepared plans * The Tcl command SPI_prepare * allways saves the plan using * SPI_saveplan and returns a key for * access. There is no chance to prepare * and not save the plan currently. **********************************************************************/ static int plperl_SPI_prepare(ClientData cdata, Tcl_Interp *interp, int argc, char *argv[]) { int nargs; char **args; plperl_query_desc *qdesc; void *plan; int i; HeapTuple typeTup; Tcl_HashEntry *hashent; int hashnew; sigjmp_buf save_restart; /************************************************************ * Don't do anything if we are already in restart mode ************************************************************/ if (plperl_restart_in_progress) return TCL_ERROR; /************************************************************ * Check the call syntax ************************************************************/ if (argc != 3) { Tcl_SetResult(interp, "syntax error - 'SPI_prepare query argtypes'", TCL_VOLATILE); return TCL_ERROR; } /************************************************************ * Split the argument type list ************************************************************/ if (Tcl_SplitList(interp, argv[2], &nargs, &args) != TCL_OK) return TCL_ERROR; /************************************************************ * Allocate the new querydesc structure ************************************************************/ qdesc = (plperl_query_desc *) malloc(sizeof(plperl_query_desc)); sprintf(qdesc->qname, "%lx", (long) qdesc); qdesc->nargs = nargs; qdesc->argtypes = (Oid *) malloc(nargs * sizeof(Oid)); qdesc->arginfuncs = (FmgrInfo *) malloc(nargs * sizeof(FmgrInfo)); qdesc->argtypelems = (Oid *) malloc(nargs * sizeof(Oid)); qdesc->argvalues = (Datum *) malloc(nargs * sizeof(Datum)); qdesc->arglen = (int *) malloc(nargs * sizeof(int)); /************************************************************ * Prepare to start a controlled return through all * interpreter levels on transaction abort ************************************************************/ memcpy(&save_restart, &Warn_restart, sizeof(save_restart)); if (sigsetjmp(Warn_restart, 1) != 0) { memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); plperl_restart_in_progress = 1; free(qdesc->argtypes); free(qdesc->arginfuncs); free(qdesc->argtypelems); free(qdesc->argvalues); free(qdesc->arglen); free(qdesc); ckfree(args); return TCL_ERROR; } /************************************************************ * Lookup the argument types by name in the system cache * and remember the required information for input conversion ************************************************************/ for (i = 0; i < nargs; i++) { typeTup = SearchSysCacheTuple(TYPNAME, PointerGetDatum(args[i]), 0, 0, 0); if (!HeapTupleIsValid(typeTup)) elog(ERROR, "plperl: Cache lookup of type %s failed", args[i]); qdesc->argtypes[i] = typeTup->t_data->t_oid; fmgr_info(((Form_pg_type) GETSTRUCT(typeTup))->typinput, &(qdesc->arginfuncs[i])); qdesc->argtypelems[i] = ((Form_pg_type) GETSTRUCT(typeTup))->typelem; qdesc->argvalues[i] = (Datum) NULL; qdesc->arglen[i] = (int) (((Form_pg_type) GETSTRUCT(typeTup))->typlen); } /************************************************************ * Prepare the plan and check for errors ************************************************************/ plan = SPI_prepare(argv[1], nargs, qdesc->argtypes); if (plan == NULL) { char buf[128]; char *reason; memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); switch (SPI_result) { case SPI_ERROR_ARGUMENT: reason = "SPI_ERROR_ARGUMENT"; break; case SPI_ERROR_UNCONNECTED: reason = "SPI_ERROR_UNCONNECTED"; break; case SPI_ERROR_COPY: reason = "SPI_ERROR_COPY"; break; case SPI_ERROR_CURSOR: reason = "SPI_ERROR_CURSOR"; break; case SPI_ERROR_TRANSACTION: reason = "SPI_ERROR_TRANSACTION"; break; case SPI_ERROR_OPUNKNOWN: reason = "SPI_ERROR_OPUNKNOWN"; break; default: sprintf(buf, "unknown RC %d", SPI_result); reason = buf; break; } elog(ERROR, "plperl: SPI_prepare() failed - %s", reason); } /************************************************************ * Save the plan ************************************************************/ qdesc->plan = SPI_saveplan(plan); if (qdesc->plan == NULL) { char buf[128]; char *reason; memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); switch (SPI_result) { case SPI_ERROR_ARGUMENT: reason = "SPI_ERROR_ARGUMENT"; break; case SPI_ERROR_UNCONNECTED: reason = "SPI_ERROR_UNCONNECTED"; break; default: sprintf(buf, "unknown RC %d", SPI_result); reason = buf; break; } elog(ERROR, "plperl: SPI_saveplan() failed - %s", reason); } /************************************************************ * Insert a hashtable entry for the plan and return * the key to the caller ************************************************************/ memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); hashent = Tcl_CreateHashEntry(plperl_query_hash, qdesc->qname, &hashnew); Tcl_SetHashValue(hashent, (ClientData) qdesc); Tcl_SetResult(interp, qdesc->qname, TCL_VOLATILE); return TCL_OK; } /********************************************************************** * plperl_SPI_execp() - Execute a prepared plan **********************************************************************/ static int plperl_SPI_execp(ClientData cdata, Tcl_Interp *interp, int argc, char *argv[]) { int spi_rc; char buf[64]; int i, j; int loop_body; Tcl_HashEntry *hashent; plperl_query_desc *qdesc; char *nulls = NULL; char *arrayname = NULL; int count = 0; int callnargs; static char **callargs = NULL; int loop_rc; int ntuples; HeapTuple *tuples = NULL; TupleDesc tupdesc = NULL; sigjmp_buf save_restart; char *usage = "syntax error - 'SPI_execp " "?-nulls string? ?-count n? " "?-array name? query ?args? ?loop body?"; /************************************************************ * Tidy up from an earlier abort ************************************************************/ if (callargs != NULL) { ckfree(callargs); callargs = NULL; } /************************************************************ * Don't do anything if we are already in restart mode ************************************************************/ if (plperl_restart_in_progress) return TCL_ERROR; /************************************************************ * Get the options and check syntax ************************************************************/ i = 1; while (i < argc) { if (strcmp(argv[i], "-array") == 0) { if (++i >= argc) { Tcl_SetResult(interp, usage, TCL_VOLATILE); return TCL_ERROR; } arrayname = argv[i++]; continue; } if (strcmp(argv[i], "-nulls") == 0) { if (++i >= argc) { Tcl_SetResult(interp, usage, TCL_VOLATILE); return TCL_ERROR; } nulls = argv[i++]; continue; } if (strcmp(argv[i], "-count") == 0) { if (++i >= argc) { Tcl_SetResult(interp, usage, TCL_VOLATILE); return TCL_ERROR; } if (Tcl_GetInt(interp, argv[i++], &count) != TCL_OK) return TCL_ERROR; continue; } break; } /************************************************************ * Check minimum call arguments ************************************************************/ if (i >= argc) { Tcl_SetResult(interp, usage, TCL_VOLATILE); return TCL_ERROR; } /************************************************************ * Get the prepared plan descriptor by it's key ************************************************************/ hashent = Tcl_FindHashEntry(plperl_query_hash, argv[i++]); if (hashent == NULL) { Tcl_AppendResult(interp, "invalid queryid '", argv[--i], "'", NULL); return TCL_ERROR; } qdesc = (plperl_query_desc *) Tcl_GetHashValue(hashent); /************************************************************ * If a nulls string is given, check for correct length ************************************************************/ if (nulls != NULL) { if (strlen(nulls) != qdesc->nargs) { Tcl_SetResult(interp, "length of nulls string doesn't match # of arguments", TCL_VOLATILE); return TCL_ERROR; } } /************************************************************ * If there was a argtype list on preparation, we need * an argument value list now ************************************************************/ if (qdesc->nargs > 0) { if (i >= argc) { Tcl_SetResult(interp, "missing argument list", TCL_VOLATILE); return TCL_ERROR; } /************************************************************ * Split the argument values ************************************************************/ if (Tcl_SplitList(interp, argv[i++], &callnargs, &callargs) != TCL_OK) return TCL_ERROR; /************************************************************ * Check that the # of arguments matches ************************************************************/ if (callnargs != qdesc->nargs) { Tcl_SetResult(interp, "argument list length doesn't match # of arguments for query", TCL_VOLATILE); if (callargs != NULL) { ckfree(callargs); callargs = NULL; } return TCL_ERROR; } /************************************************************ * Prepare to start a controlled return through all * interpreter levels on transaction abort during the * parse of the arguments ************************************************************/ memcpy(&save_restart, &Warn_restart, sizeof(save_restart)); if (sigsetjmp(Warn_restart, 1) != 0) { memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); for (j = 0; j < callnargs; j++) { if (qdesc->arglen[j] < 0 && qdesc->argvalues[j] != (Datum) NULL) { pfree((char *) (qdesc->argvalues[j])); qdesc->argvalues[j] = (Datum) NULL; } } ckfree(callargs); callargs = NULL; plperl_restart_in_progress = 1; Tcl_SetResult(interp, "Transaction abort", TCL_VOLATILE); return TCL_ERROR; } /************************************************************ * Setup the value array for the SPI_execp() using * the type specific input functions ************************************************************/ for (j = 0; j < callnargs; j++) { qdesc->argvalues[j] = FunctionCall3(&qdesc->arginfuncs[j], CStringGetDatum(callargs[j]), ObjectIdGetDatum(qdesc->argtypelems[j]), Int32GetDatum(qdesc->arglen[j])); } /************************************************************ * Free the splitted argument value list ************************************************************/ memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); ckfree(callargs); callargs = NULL; } else callnargs = 0; /************************************************************ * Remember the index of the last processed call * argument - a loop body for SELECT might follow ************************************************************/ loop_body = i; /************************************************************ * Prepare to start a controlled return through all * interpreter levels on transaction abort ************************************************************/ memcpy(&save_restart, &Warn_restart, sizeof(save_restart)); if (sigsetjmp(Warn_restart, 1) != 0) { memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); for (j = 0; j < callnargs; j++) { if (qdesc->arglen[j] < 0 && qdesc->argvalues[j] != (Datum) NULL) { pfree((char *) (qdesc->argvalues[j])); qdesc->argvalues[j] = (Datum) NULL; } } plperl_restart_in_progress = 1; Tcl_SetResult(interp, "Transaction abort", TCL_VOLATILE); return TCL_ERROR; } /************************************************************ * Execute the plan ************************************************************/ spi_rc = SPI_execp(qdesc->plan, qdesc->argvalues, nulls, count); memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); /************************************************************ * For varlena data types, free the argument values ************************************************************/ for (j = 0; j < callnargs; j++) { if (qdesc->arglen[j] < 0 && qdesc->argvalues[j] != (Datum) NULL) { pfree((char *) (qdesc->argvalues[j])); qdesc->argvalues[j] = (Datum) NULL; } } /************************************************************ * Check the return code from SPI_execp() ************************************************************/ switch (spi_rc) { case SPI_OK_UTILITY: Tcl_SetResult(interp, "0", TCL_VOLATILE); return TCL_OK; case SPI_OK_SELINTO: case SPI_OK_INSERT: case SPI_OK_DELETE: case SPI_OK_UPDATE: sprintf(buf, "%d", SPI_processed); Tcl_SetResult(interp, buf, TCL_VOLATILE); return TCL_OK; case SPI_OK_SELECT: break; case SPI_ERROR_ARGUMENT: Tcl_SetResult(interp, "plperl: SPI_exec() failed - SPI_ERROR_ARGUMENT", TCL_VOLATILE); return TCL_ERROR; case SPI_ERROR_UNCONNECTED: Tcl_SetResult(interp, "plperl: SPI_exec() failed - SPI_ERROR_UNCONNECTED", TCL_VOLATILE); return TCL_ERROR; case SPI_ERROR_COPY: Tcl_SetResult(interp, "plperl: SPI_exec() failed - SPI_ERROR_COPY", TCL_VOLATILE); return TCL_ERROR; case SPI_ERROR_CURSOR: Tcl_SetResult(interp, "plperl: SPI_exec() failed - SPI_ERROR_CURSOR", TCL_VOLATILE); return TCL_ERROR; case SPI_ERROR_TRANSACTION: Tcl_SetResult(interp, "plperl: SPI_exec() failed - SPI_ERROR_TRANSACTION", TCL_VOLATILE); return TCL_ERROR; case SPI_ERROR_OPUNKNOWN: Tcl_SetResult(interp, "plperl: SPI_exec() failed - SPI_ERROR_OPUNKNOWN", TCL_VOLATILE); return TCL_ERROR; default: sprintf(buf, "%d", spi_rc); Tcl_AppendResult(interp, "plperl: SPI_exec() failed - ", "unknown RC ", buf, NULL); return TCL_ERROR; } /************************************************************ * Only SELECT queries fall through to here - remember the * tuples we got ************************************************************/ ntuples = SPI_processed; if (ntuples > 0) { tuples = SPI_tuptable->vals; tupdesc = SPI_tuptable->tupdesc; } /************************************************************ * Prepare to start a controlled return through all * interpreter levels on transaction abort during * the ouput conversions of the results ************************************************************/ memcpy(&save_restart, &Warn_restart, sizeof(save_restart)); if (sigsetjmp(Warn_restart, 1) != 0) { memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); plperl_restart_in_progress = 1; Tcl_SetResult(interp, "Transaction abort", TCL_VOLATILE); return TCL_ERROR; } /************************************************************ * If there is no loop body given, just set the variables * from the first tuple (if any) and return the number of * tuples selected ************************************************************/ if (loop_body >= argc) { if (ntuples > 0) plperl_set_tuple_values(interp, arrayname, 0, tuples[0], tupdesc); memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); sprintf(buf, "%d", ntuples); Tcl_SetResult(interp, buf, TCL_VOLATILE); return TCL_OK; } /************************************************************ * There is a loop body - process all tuples and evaluate * the body on each ************************************************************/ for (i = 0; i < ntuples; i++) { plperl_set_tuple_values(interp, arrayname, i, tuples[i], tupdesc); loop_rc = Tcl_Eval(interp, argv[loop_body]); if (loop_rc == TCL_OK) continue; if (loop_rc == TCL_CONTINUE) continue; if (loop_rc == TCL_RETURN) { memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); return TCL_RETURN; } if (loop_rc == TCL_BREAK) break; memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); return TCL_ERROR; } /************************************************************ * Finally return the number of tuples ************************************************************/ memcpy(&Warn_restart, &save_restart, sizeof(Warn_restart)); sprintf(buf, "%d", ntuples); Tcl_SetResult(interp, buf, TCL_VOLATILE); return TCL_OK; } /********************************************************************** * plperl_set_tuple_values() - Set variables for all attributes * of a given tuple **********************************************************************/ static void plperl_set_tuple_values(Tcl_Interp *interp, char *arrayname, int tupno, HeapTuple tuple, TupleDesc tupdesc) { int i; char *outputstr; char buf[64]; Datum attr; bool isnull; char *attname; HeapTuple typeTup; Oid typoutput; Oid typelem; char **arrptr; char **nameptr; char *nullname = NULL; /************************************************************ * Prepare pointers for Tcl_SetVar2() below and in array * mode set the .tupno element ************************************************************/ if (arrayname == NULL) { arrptr = &attname; nameptr = &nullname; } else { arrptr = &arrayname; nameptr = &attname; sprintf(buf, "%d", tupno); Tcl_SetVar2(interp, arrayname, ".tupno", buf, 0); } for (i = 0; i < tupdesc->natts; i++) { /************************************************************ * Get the attribute name ************************************************************/ attname = tupdesc->attrs[i]->attname.data; /************************************************************ * Get the attributes value ************************************************************/ attr = heap_getattr(tuple, i + 1, tupdesc, &isnull); /************************************************************ * Lookup the attribute type in the syscache * for the output function ************************************************************/ typeTup = SearchSysCacheTuple(TYPEOID, ObjectIdGetDatum(tupdesc->attrs[i]->atttypid), 0, 0, 0); if (!HeapTupleIsValid(typeTup)) { elog(ERROR, "plperl: Cache lookup for attribute '%s' type %u failed", attname, tupdesc->attrs[i]->atttypid); } typoutput = (Oid) (((Form_pg_type) GETSTRUCT(typeTup))->typoutput); typelem = (Oid) (((Form_pg_type) GETSTRUCT(typeTup))->typelem); /************************************************************ * If there is a value, set the variable * If not, unset it * * Hmmm - Null attributes will cause functions to * crash if they don't expect them - need something * smarter here. ************************************************************/ if (!isnull && OidIsValid(typoutput)) { outputstr = DatumGetCString(OidFunctionCall3(typoutput, attr, ObjectIdGetDatum(typelem), Int32GetDatum(tupdesc->attrs[i]->attlen))); Tcl_SetVar2(interp, *arrptr, *nameptr, outputstr, 0); pfree(outputstr); } else Tcl_UnsetVar2(interp, *arrptr, *nameptr, 0); } } #endif /********************************************************************** * plperl_build_tuple_argument() - Build a string for a ref to a hash * from all attributes of a given tuple **********************************************************************/ static SV * plperl_build_tuple_argument(HeapTuple tuple, TupleDesc tupdesc) { int i; SV *output; Datum attr; bool isnull; char *attname; char *outputstr; HeapTuple typeTup; Oid typoutput; Oid typelem; output = sv_2mortal(newSVpv("{", 0)); for (i = 0; i < tupdesc->natts; i++) { /************************************************************ * Get the attribute name ************************************************************/ attname = tupdesc->attrs[i]->attname.data; /************************************************************ * Get the attributes value ************************************************************/ attr = heap_getattr(tuple, i + 1, tupdesc, &isnull); /************************************************************ * Lookup the attribute type in the syscache * for the output function ************************************************************/ typeTup = SearchSysCacheTuple(TYPEOID, ObjectIdGetDatum(tupdesc->attrs[i]->atttypid), 0, 0, 0); if (!HeapTupleIsValid(typeTup)) { elog(ERROR, "plperl: Cache lookup for attribute '%s' type %u failed", attname, tupdesc->attrs[i]->atttypid); } typoutput = (Oid) (((Form_pg_type) GETSTRUCT(typeTup))->typoutput); typelem = (Oid) (((Form_pg_type) GETSTRUCT(typeTup))->typelem); /************************************************************ * If there is a value, append the attribute name and the * value to the list. * If it is null it will be set to undef. ************************************************************/ if (!isnull && OidIsValid(typoutput)) { outputstr = DatumGetCString(OidFunctionCall3(typoutput, attr, ObjectIdGetDatum(typelem), Int32GetDatum(tupdesc->attrs[i]->attlen))); sv_catpvf(output, "'%s' => '%s',", attname, outputstr); pfree(outputstr); } else sv_catpvf(output, "'%s' => undef,", attname); } sv_catpv(output, "}"); output = perl_eval_pv(SvPV_nolen(output), TRUE); return output; }
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