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Improve the grib_check_gaussian_grid tool error reporting

This commit is contained in:
Shahram Najm 2018-11-22 18:11:58 +00:00
parent abb85e3481
commit a774089f1f
2 changed files with 77 additions and 33 deletions
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16
tests/check_gaussian_grids.sh
View File

@ -9,9 +9,25 @@
. ./include.sh
label="grib_check_gaussian_grids"
temp=temp.$label.grib
# Check all sample GRIBs with a Gaussian grid
samples_dir=$ECCODES_SAMPLES_PATH
for gg in ${samples_dir}/reduced_gg_* ${samples_dir}/regular_gg_*; do
${tools_dir}/grib_check_gaussian_grid $gg >/dev/null
grib_check_key_equals $gg "global" 1
done
# Set wrong angle and re-test. Should fail
input=$samples_dir/reduced_gg_pl_1280_grib2.tmpl
${tools_dir}/grib_set -s longitudeOfLastGridPoint=359929680 $input $temp
set +e
${tools_dir}/grib_check_gaussian_grid -v $temp
status=$?
set -e
[ $status -eq 1 ]
rm -f $temp

94
tools/grib_check_gaussian_grid.c
View File

@ -18,11 +18,13 @@
#include <stdlib.h>
#include <assert.h>
#include <stdarg.h>
#include <sys/stat.h>
#include "eccodes.h"
#define STR_EQUAL(s1, s2) (strcmp((s1), (s2)) == 0)
int exit_on_error = 1; /* By default exit if any check fails */
int verbose = 0; /* By default quiet unless errors */
int error_count = 0;
int DBL_EQUAL(double d1, double d2, double tolerance)
@ -32,22 +34,26 @@ int DBL_EQUAL(double d1, double d2, double tolerance)
void usage(const char* prog)
{
printf("Usage: %s [-f] grib_file grib_file ...\n\n",prog);
printf("Usage: %s [-f] [-v] grib_file grib_file ...\n\n",prog);
printf("Check geometry of GRIB fields with a Gaussian Grid.\n");
printf("(The grid is assumed to be GLOBAL)\n\n");
printf("Options:\n");
printf("-f Do not exit on first error\n");
printf(" -f Do not exit on first error\n");
printf(" -v Verbose\n");
printf("\n");
exit(1);
}
/* Print an error message and die */
void error(const char* fmt, ...)
/* Print an error message and optionally die */
void error(const char* filename, int msg_num, const char* fmt, ...)
{
char buf[1024] = {0,};
va_list list;
va_start(list,fmt);
sprintf(buf, " %s", fmt); /* indent a bit */
if(verbose)
sprintf(buf, " Error: %s", fmt); /* indent a bit */
else
sprintf(buf, "Error: %s #%d: %s", filename, msg_num, fmt);
vfprintf(stderr, buf, list);
va_end(list);
@ -65,17 +71,32 @@ double get_precision(long edition)
return 0.0;
}
static int is_regular_file(const char* path)
{
struct stat s;
int stat_val = stat(path,&s);
if (stat_val != 0) return 0; /*error doing stat*/
return S_ISREG( s.st_mode );
}
int process_file(const char* filename)
{
int err = 0, msg_num = 0;
codes_handle *h = NULL;
FILE* in = fopen(filename, "r");
if(!in) {
error("ERROR: unable to open input file %s\n",filename);
FILE* in = NULL;
if (!is_regular_file(filename)) {
if(verbose) printf(" WARNING: '%s' not a regular file! Ignoring\n", filename);
return GRIB_IO_PROBLEM;
}
printf("Checking file %s\n", filename);
in = fopen(filename, "r");
if(!in) {
fprintf(stderr, "ERROR: unable to open input file %s\n",filename);
exit(1);
}
if(verbose) printf("Checking file %s\n", filename);
while ((h = codes_handle_new_from_file(0, in, PRODUCT_GRIB, &err)) != NULL )
{
@ -91,7 +112,7 @@ int process_file(const char* filename)
if (err != CODES_SUCCESS) CODES_CHECK(err,0);
++msg_num;
CODES_CHECK(codes_get_long(h,"edition",&edition),0);
printf(" Processing GRIB message #%d (edition=%ld)\n", msg_num, edition);
if(verbose) printf(" Processing GRIB message #%d (edition=%ld)\n", msg_num, edition);
len = 32;
CODES_CHECK(codes_get_string(h,"gridType",gridType,&len),0);
@ -100,7 +121,7 @@ int process_file(const char* filename)
grid_ok = is_regular || is_reduced;
if( !grid_ok ) {
/*error("ERROR: gridType should be Reduced or Regular Gaussian Grid!\n");*/
printf(" WARNING: gridType should be Reduced or Regular Gaussian Grid! Ignoring\n");
if(verbose) printf(" WARNING: gridType should be Reduced or Regular Gaussian Grid! Ignoring\n");
codes_handle_delete(h);
continue;
}
@ -117,20 +138,20 @@ int process_file(const char* filename)
angular_tolerance = get_precision(edition);
if (N <= 0) {
error("ERROR: N should be > 0\n", N);
error(filename, msg_num, "N should be > 0\n", N);
}
if ( Nj != 2*N ) {
error("ERROR: Nj is %ld but should be 2*N (%ld)\n", Nj, 2*N);
error(filename, msg_num, "Nj is %ld but should be 2*N (%ld)\n", Nj, 2*N);
}
if (lon1 != 0) {
error("ERROR: latitudeOfFirstGridPointInDegrees=%f but should be 0\n", lon1);
error(filename, msg_num, "latitudeOfFirstGridPointInDegrees=%f but should be 0\n", lon1);
}
expected_lon2 = 360.0 - 360.0/(4*N);
/* Check first and last latitudes */
if (lat1 != -lat2) {
error("ERROR: First latitude must be = last latitude but opposite in sign: lat1=%f, lat2=%f\n",
error(filename, msg_num, "First latitude must be = last latitude but opposite in sign: lat1=%f, lat2=%f\n",
lat1, lat2);
}
/* Note: grib_get_gaussian_latitudes() assumes the 'lats' array has 2N elements! */
@ -139,10 +160,10 @@ int process_file(const char* filename)
CODES_CHECK(codes_get_gaussian_latitudes(N,lats), 0);
if (!DBL_EQUAL(lats[0], lat1, angular_tolerance)) {
error("ERROR: latitudeOfFirstGridPointInDegrees=%f but should be %f\n", lat1, lats[0]);
error(filename, msg_num, "latitudeOfFirstGridPointInDegrees=%f but should be %f\n", lat1, lats[0]);
}
if (!DBL_EQUAL(lats[Nj-1], lat2, angular_tolerance)) {
error("ERROR: latitudeOfLastGridPointInDegrees=%f but should be %f\n", lat2, lats[Nj-1]);
error(filename, msg_num, "latitudeOfLastGridPointInDegrees=%f but should be %f\n", lat2, lats[Nj-1]);
}
if (is_reduced) {
@ -154,16 +175,16 @@ int process_file(const char* filename)
is_missing_Di = codes_is_missing(h, "iDirectionIncrement", &err);
assert(err == CODES_SUCCESS);
if (!is_missing_Ni) {
error("ERROR: For a reduced gaussian grid Ni should be missing\n");
error(filename, msg_num, "For a reduced gaussian grid Ni should be missing\n");
}
if (!is_missing_Di) {
error("ERROR: For a reduced gaussian grid iDirectionIncrement should be missing\n");
error(filename, msg_num, "For a reduced gaussian grid iDirectionIncrement should be missing\n");
}
CODES_CHECK(codes_get_size(h, "pl", &pl_len),0);
assert(pl_len>0);
if (pl_len != 2*N) {
error("ERROR: Length of pl array is %ld but should be 2*N (%ld)\n", pl_len, 2*N);
error(filename, msg_num, "Length of pl array is %ld but should be 2*N (%ld)\n", pl_len, 2*N);
}
pl = (long*)malloc(pl_len*sizeof(long));
assert(pl);
@ -175,8 +196,8 @@ int process_file(const char* filename)
const long pl_start = pl[i];
const long pl_end = pl[pl_len-1-i];
if ( pl_start != pl_end ) {
error("ERROR: pl array is not symmetric: pl[%ld]=%ld, pl[%ld]=%ld\n",
i, pl_start, pl_len-1-i, pl_end);
error(filename, msg_num, "pl array is not symmetric: pl[%ld]=%ld, pl[%ld]=%ld\n",
i, pl_start, pl_len-1-i, pl_end);
}
}
@ -186,23 +207,23 @@ int process_file(const char* filename)
if (pl[i] > max_pl) max_pl = pl[i];
}
if (pl_sum != numberOfDataPoints) {
error("ERROR: Sum of pl array %ld does not match numberOfDataPoints %ld\n", pl_sum, numberOfDataPoints);
error(filename, msg_num, "Sum of pl array %ld does not match numberOfDataPoints %ld\n", pl_sum, numberOfDataPoints);
}
CODES_CHECK(codes_get_long(h,"isOctahedral",&is_octahedral),0);
if (is_octahedral) {
printf(" This is an Octahedral Gaussian grid\n");
if(verbose) printf(" This is an Octahedral Gaussian grid\n");
expected_lon2 = 360.0 - 360.0/max_pl;
}
free(pl);
}
if (fabs(lon2 - expected_lon2) > angular_tolerance) {
error("ERROR: longitudeOfLastGridPointInDegrees=%f but should be %f\n", lon2, expected_lon2);
error(filename, msg_num, "longitudeOfLastGridPointInDegrees=%f but should be %f\n", lon2, expected_lon2);
}
CODES_CHECK(codes_get_size(h, "values", &sizeOfValuesArray),0);
if (sizeOfValuesArray != numberOfDataPoints) {
error("ERROR: Number of data points %d different from size of values array %d\n",
error(filename, msg_num, "Number of data points %d different from size of values array %d\n",
numberOfDataPoints, sizeOfValuesArray);
}
@ -210,8 +231,8 @@ int process_file(const char* filename)
codes_handle_delete(h);
}
fclose(in);
printf("\n");
return 0;
if(verbose) printf("\n");
return GRIB_SUCCESS;
}
int main(int argc, char** argv)
@ -233,20 +254,27 @@ int main(int argc, char** argv)
usage(argv[0]);
return 1;
}
/* Process switches */
exit_on_error = 0;
}
else if (STR_EQUAL(arg, "-v"))
{
if (argc < 3) {
usage(argv[0]);
return 1;
}
verbose = 1;
}
else
{
/* We have a grib file */
/* We have a GRIB file */
process_file(arg);
}
}
printf("###############\n");
if(verbose) printf("###############\n");
if (error_count == 0)
{
printf("ALL OK\n");
if(verbose) printf("ALL OK\n");
}
else
{