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/************************************************************************
** VOSSAP.C -- Worker procedure to make a query to an SSAP service.
**
** M. Fitzpatrick, NOAO, Februaary 2009
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/ipc.h>
#include <sys/sem.h>
#include "VOClient.h"
#include "voAppsP.h"
extern int errno;
extern int debug, verbose, all_named, all_data, save_res, extract, quiet;
extern int meta, dverbose, count, count_only, file_get, use_name, format;
extern int id_col;
extern char *output, *d2_band, *d2_time, *d2_format, *d2_version;
int vot_callSsapSvc (svcParams *pars);
extern int vot_extractResults (char *result, char delim, svcParams *pars);
extern int vot_printCount (Query query, svcParams *pars, int *count);
extern int vot_countResults (char *result);
extern char vot_svcTypeCode (int type);
extern char *vot_normalize (char *str);
extern char *vot_getOFName (svcParams *pars, char *extn, int pid);
extern char *vot_getOFIndex (svcParams *pars, char *extn, int pid);
extern void vot_printCountHdr (void);
extern void vot_printCountLine (int nrec, svcParams *pars);
extern void vot_dalExit (int code, int count);
extern void vot_printHdr (int fd, svcParams *pars);
extern void vot_printAttrs (char *fname, Query query, char *id);
/************************************************************************
** VOT_CALLSSAPSVC -- Call a Simple Image Access service.
*/
int
vot_callSsapSvc (svcParams *pars)
{
char *result = (char *)NULL;
char *extn, fname[SZ_LINE];
DAL ssap; /* DAL Connection handle */
Query query; /* Query handle */
pid_t cpid;
int fd, code, res_count = 0;
if (debug)
fprintf (stderr, "ssapCaller(%s:%d): ra = %f dec = %f\n",
pars->name, getpid(), pars->ra, pars->dec);
if ((cpid = fork()) < 0) {
fprintf (stderr,
"vot_callSsapSvc: Unable to create child process, exiting\n");
exit (-1);
} else if (cpid > 0) { /* Parent process */
return (cpid);
} else { /* Child process */
if (getenv("VOC_NO_NETWORK"))
return (OK);
/* Initialize the VOClient code. Error messages are printed by the
** interface so we just quit if there is a problem.
*/
if (voc_initVOClient ((char *) NULL) == ERR)
vot_dalExit (E_VOCINIT, 0);
/* Get a new connection to the named service and form the query.
*/
ssap = voc_openSsapConnection (pars->service_url);
if (meta) {
query = voc_getSsapQuery (ssap, 0.0, 0.0, 0.0,
(char *) NULL, (char *) NULL, "METADATA");
} else {
query = voc_getSsapQuery (ssap, pars->ra, pars->dec, pars->sr,
(char *) d2_band, /* BAND */
(char *) d2_time, /* TIME */
(char *) d2_format); /* FORMAT */
if (d2_version)
(void) voc_addStringParam (query, "VERSION", d2_version);
(void) voc_addStringParam (query, "REQUEST", "queryData");
}
/* Execute the query.
*/
if (debug) {
fprintf (stderr, "ssapCaller(%s:%d): executing query....%d\n",
pars->name, getpid(), pars->fmt);
fprintf (stderr, "Executing SSAP Query(%d):\n %s\n\n", query,
voc_getQueryString (query, SSAP_CONN, 0));
}
if (count_only) {
if ((code = vot_printCount (query, pars, &res_count)) != E_NONE) {
vot_dalExit (code, res_count);
}
} else if (meta) {
bzero (fname, SZ_FNAME);
if (output)
strcpy (fname, output);
else
sprintf (fname, "%s_%c.meta", vot_normalize (pars->name),
vot_svcTypeCode(pars->type));
vot_printAttrs (fname, query, pars->identifier);
} else {
char delim;
switch (pars->fmt) {
case F_ASCII:
extn = "asv"; delim = ' ';
result = voc_executeASCII (query);
break;
case F_RAW:
extn = "xml"; delim = '\0';
result = voc_executeVOTable (query);
break;
case F_RAW | F_XML:
extract |= EX_XML;
extn = "xml"; delim = '\0';
result = voc_executeVOTable (query);
break;
case F_CSV:
extn = "csv"; delim = ',';
result = voc_executeCSV (query);
break;
case F_CSV | F_HTML:
extract |= EX_HTML;
extn = "csv"; delim = ',';
result = voc_executeCSV (query);
break;
case F_CSV | F_KML:
extract |= EX_KML;
extn = "csv"; delim = ',';
result = voc_executeCSV (query);
break;
case F_TSV:
extn = "tsv"; delim = '\t';
result = voc_executeTSV (query);
break;
default:
fprintf (stderr, "ssapCaller: Unknown format: %d\n", pars->fmt);
exit (-1);
}
if (!result)
vot_dalExit (E_NODATA, 0);
else if (pars->fmt != F_RAW)
res_count = vot_extractResults (result, delim, pars);
else if (pars->fmt == F_RAW)
res_count = vot_countResults (result);
if (count && (!output || (output && output[0] != '-')))
vot_printCountLine (res_count, pars);
#ifdef EARLY_EXIT
if (res_count == 0) {
voc_closeConnection (siap);
voc_closeVOClient (0);
if (result) free ((char *) result);
vot_dalExit (E_NODATA, res_count);
}
#endif
/* Check for a NULL result indicating an error in the call.
*/
if (result == (char *)NULL) {
char *err;
extern char *voc_getErrMsg();
if (strncmp ((err = voc_getErrMsg()), "ERROR", 5) == 0) {
if (verbose > 1)
fprintf (stderr, "Pid %d: %s\n", getpid(), err);
vot_dalExit (E_REQFAIL, res_count);
} else
vot_dalExit (E_NODATA, res_count);
}
if (use_name || all_named || id_col)
strcpy (fname, vot_getOFName (pars, extn, (int)getpid()));
else
strcpy (fname, vot_getOFIndex (pars, extn, (int)getpid()));
if (output && output[0] == '-' && (! extract & EX_COLLECT)) {
write (fileno(stdout), result, strlen (result)-1);
} else if (format != (F_CSV|F_HTML) && format != (F_CSV|F_KML)) {
if ((fd = open (fname, O_WRONLY|O_CREAT, 0644)) < 0){
fprintf (stderr, "Error opening file '%s'\n", fname);
vot_dalExit (E_FILOPEN, res_count);
}
/* Output the result.
if (pars->fmt = F_CSV || pars->fmt == F_TSV)
vot_printHdr (fd, pars);
*/
if (result)
write (fd, result, strlen (result)-1);
close (fd);
}
}
voc_closeConnection (ssap); /* close the ssap connection */
voc_closeVOClient (0); /* close VOClient connection */
if (result) free ((void *) result); /* free local storage */
if (debug) {
fprintf (stderr, "ssapCaller(%s:%d): exiting....\n",
pars->name, getpid());
}
vot_dalExit (E_NONE, res_count); /* no error */
}
return (OK);
}
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