mirror/netcdf-c
2
0
Fork 0
mirror of https://github.com/Unidata/netcdf-c.git synced 2025-03-07 17:08:02 +08:00
Code Issues Packages Projects Releases Wiki Activity
a7fa2d8d95
netcdf-c/ncdump
History
Dennis Heimbigner bf2746b8ea Provide byte-range reading of remote datasets 
re: issue https://github.com/Unidata/netcdf-c/issues/1251

Assume that you have the URL to a remote dataset
which is a normal netcdf-3 or netcdf-4 file.

This PR allows the netcdf-c to read that dataset's
contents as a netcdf file using HTTP byte ranges
if the remote server supports byte-range access.

Originally, this PR was set up to access Amazon S3 objects,
but it can also access other remote datasets such as those
provided by a Thredds server via the HTTPServer access protocol.
It may also work for other kinds of servers.

Note that this is not intended as a true production
capability because, as is known, this kind of access to
can be quite slow. In addition, the byte-range IO drivers
do not currently do any sort of optimization or caching.

An additional goal here is to gain some experience with
the Amazon S3 REST protocol.

This architecture and its use documented in
the file docs/byterange.dox.

There are currently two test cases:

1. nc_test/tst_s3raw.c - this does a simple open, check format, close cycle
   for a remote netcdf-3 file and a remote netcdf-4 file.
2. nc_test/test_s3raw.sh - this uses ncdump to investigate some remote
   datasets.

This PR also incorporates significantly changed model inference code
(see the superceded PR https://github.com/Unidata/netcdf-c/pull/1259).

1. It centralizes the code that infers the dispatcher.
2. It adds support for byte-range URLs

Other changes:

1. NC_HDF5_finalize was not being properly called by nc_finalize().
2. Fix minor bug in ncgen3.l
3. fix memory leak in nc4info.c
4. add code to walk the .daprc triples and to replace protocol=
   fragment tag with a more general mode= tag.

Final Note:
Th inference code is still way too complicated. We need to move
to the validfile() model used by netcdf Java, where each
dispatcher is asked if it can process the file. This decentralizes
the inference code. This will be done after all the major new
dispatchers (PIO, Zarr, etc) have been implemented.
2019-01-01 18:27:36 -07:00
..
cdl ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
expected ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
bom.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
cdl.h ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
chunkspec.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
chunkspec.h ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
CMakeLists.txt ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
ctests.sh Fix more memory leaks in netcdf-c library 2018-11-15 10:00:38 -07:00
depend
dimmap.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
dimmap.h ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
dumplib.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
dumplib.h ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
env
indent.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
indent.h ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
inttags4.cdl re: gihub issue https://github.com/Unidata/netcdf-c/issues/380 2017-03-24 18:56:14 -06:00
inttags.cdl
isnan.h ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
L512.bin re e-support UBS-599337 2017-10-24 16:25:09 -06:00
list.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
list.h ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
Makefile.am Merge remote-tracking branch 'origin/license_update.wif' into pr-aggregation.wif 2018-12-11 17:08:21 -05:00
nc4print.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
nccomps.h ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
nccopy.1 Fix failure in the nccopy -c option 2018-11-12 12:59:56 -07:00
nccopy.c Provide byte-range reading of remote datasets 2019-01-01 18:27:36 -07:00
ncdump.1
ncdump.c Provide byte-range reading of remote datasets 2019-01-01 18:27:36 -07:00
ncdump.h ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
nciter.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
nciter.h ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
nctime0.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
nctime0.h ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
nctrunc.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
ocprint.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
ref1.ncml
ref_ctest1_nc4.cdl
ref_ctest1_nc4c.cdl
ref_ctest64.c different attempt to deal with ncdump dependencies 2017-11-11 17:33:51 -07:00
ref_ctest.c another attempt at reducing ncdump dependencies 2017-11-11 16:45:03 -07:00
ref_inttags4.cdl Working on getting cdf5 tests running. 2017-09-15 18:00:28 -06:00
ref_inttags.cdl
ref_nc_test_netcdf4_4_0.nc
ref_nc_test_netcdf4.cdl
ref_nccopy3_subset.nc Wiring new test into autotools. 2017-09-01 11:57:28 -06:00
ref_null_byte_padding_test.nc Wiring in a quick test. 2017-11-20 13:52:06 -07:00
ref_provenance_v1.nc There was a request to extend the provenance information 2018-08-25 21:44:41 -06:00
ref_test_360_day_1900.cdl Solve issue https://github.com/Unidata/netcdf-c/issues/359 2017-07-25 11:58:34 -06:00
ref_test_360_day_1900.nc Makefile.am cleanup 2017-11-18 14:20:04 -07:00
ref_test_365_day_1900.cdl Solve issue https://github.com/Unidata/netcdf-c/issues/359 2017-07-25 11:58:34 -06:00
ref_test_365_day_1900.nc Makefile.am cleanup 2017-11-18 14:20:04 -07:00
ref_test_366_day_1900.cdl Solve issue https://github.com/Unidata/netcdf-c/issues/359 2017-07-25 11:58:34 -06:00
ref_test_366_day_1900.nc Makefile.am cleanup 2017-11-18 14:20:04 -07:00
ref_test_corrupt_magic.nc re e-support UBS-599337 2017-10-24 16:25:09 -06:00
ref_times.cdl
ref_tst_charfill.cdl
ref_tst_comp2.cdl
ref_tst_comp.cdl
ref_tst_compounds2.cdl
ref_tst_compounds2.nc
ref_tst_compounds3.cdl
ref_tst_compounds3.nc
ref_tst_compounds4.cdl
ref_tst_compounds4.nc
ref_tst_enum_data.cdl
ref_tst_fillbug.cdl
ref_tst_format_att_64.cdl
ref_tst_format_att.cdl
ref_tst_group_data_v23.cdl
ref_tst_group_data.cdl
ref_tst_grp_spec0.cdl
ref_tst_grp_spec.cdl
ref_tst_irish_rover.nc tests for ncdump issue with irish rover 2018-05-15 08:09:52 -06:00
ref_tst_mud4_chars.cdl
ref_tst_mud4-bc.cdl
ref_tst_mud4.cdl
ref_tst_nans.cdl
ref_tst_nc4_utf8_4.cdl Work towards parallel testing via cmake. 2017-11-22 12:10:58 -07:00
ref_tst_ncf213.cdl There was a request to extend the provenance information 2018-08-25 21:44:41 -06:00
ref_tst_noncoord.cdl
ref_tst_opaque_data.cdl
ref_tst_small.cdl
ref_tst_solar_1.cdl
ref_tst_solar_2.cdl
ref_tst_special_atts3.cdl
ref_tst_special_atts.cdl There was a request to extend the provenance information 2018-08-25 21:44:41 -06:00
ref_tst_string_data.cdl
ref_tst_unicode.cdl
ref_tst_utf8_4.cdl
ref_tst_utf8.cdl
ref_tst_vlen_data2.cdl
ref_tst_vlen_data.cdl
rewrite-scalar.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
run_back_comp_tests.sh
run_ncgen_nc4_tests.sh Fix more memory leaks in netcdf-c library 2018-11-15 10:00:38 -07:00
run_ncgen_tests.sh replace USE_CDF5 with ENABLE_CDF5 2018-06-29 21:17:07 -05:00
run_tests.sh moved irish rover ncdump test to netcdf-4 test script 2018-05-15 08:13:25 -06:00
run_utf8_nc4_tests.sh eliminated dependencies 2017-11-25 05:18:04 -07:00
run_utf8_tests.sh eliminated dependencies 2017-11-25 05:18:04 -07:00
small2.cdl
small.cdl
test0.cdl
test_corrupt_magic.cdl re e-support UBS-599337 2017-10-24 16:25:09 -06:00
tst_64bit.sh replace USE_CDF5 with ENABLE_CDF5 2018-06-29 21:17:07 -05:00
tst_bom.sh
tst_brecs.cdl
tst_bug321.cdl
tst_calendars.cdl
tst_calendars.sh Makefile.am cleanup 2017-11-18 14:20:04 -07:00
tst_charfill.cdl
tst_charfill.sh
tst_chunking.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
tst_comp2.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
tst_comp.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
tst_compress.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
tst_create_files.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
tst_dimsizes.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
tst_dimsizes.sh make -j working for classic only in ncdump 2017-11-17 08:22:49 -07:00
tst_enum_data.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
tst_fileinfo.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
tst_fileinfo.sh There was a request to extend the provenance information 2018-08-25 21:44:41 -06:00
tst_fillbug.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
tst_fillbug.sh move C program invokations to scripts to clean up dependencies in build 2017-11-16 13:03:35 -07:00
tst_formatx3.sh replace USE_CDF5 with ENABLE_CDF5 2018-06-29 21:17:07 -05:00
tst_formatx4.sh make -j working for classic only in ncdump 2017-11-17 08:22:49 -07:00
tst_group_data.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
tst_grp_spec.sh
tst_h_rdc0.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
tst_h_scalar.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
tst_h_scalar.sh move C program invokations to scripts to clean up dependencies in build 2017-11-16 13:03:35 -07:00
tst_hdf5_offset.sh Swapped /bin/bash for /bin/sh to test on osx. 2018-08-12 23:01:08 -06:00
tst_inmemory_nc3.sh make -j working for classic only in ncdump 2017-11-17 08:22:49 -07:00
tst_inmemory_nc4.sh make -j working for classic only in ncdump 2017-11-17 08:22:49 -07:00
tst_inttags4.sh Working on getting cdf5 tests running. 2017-09-15 18:00:28 -06:00
tst_inttags.sh
tst_iter.sh
tst_lengths.sh replace USE_CDF5 with ENABLE_CDF5 2018-06-29 21:17:07 -05:00
tst_mslp.cdl
tst_mud.sh
tst_nans.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
tst_nccopy3_subset.sh Swapped /bin/bash for /bin/sh to test on osx. 2018-08-12 23:01:08 -06:00
tst_nccopy3.sh There was a request to extend the provenance information 2018-08-25 21:44:41 -06:00
tst_nccopy4.sh Fix more memory leaks in netcdf-c library 2018-11-15 10:00:38 -07:00
tst_nccopy5.sh Fix failure in the nccopy -c option 2018-11-12 12:59:56 -07:00
tst_ncgen4_classic.sh The ncdap_tests were a mess, so I decided to clean them up 2018-03-20 21:31:31 -06:00
tst_ncgen4_cycle.sh removed many dependencies in ncdump testing 2017-11-25 07:28:07 -07:00
tst_ncgen4_diff.sh removed many dependencies in ncdump testing 2017-11-25 07:28:07 -07:00
tst_ncgen4.sh Swapped /bin/bash for /bin/sh to test on osx. 2018-08-12 23:01:08 -06:00
tst_ncgen_shared.sh Fix more memory leaks in netcdf-c library 2018-11-15 10:00:38 -07:00
tst_ncml.cdl
tst_netcdf4_4.sh move cleanup to makefile 2018-11-18 13:43:49 -07:00
tst_netcdf4.sh Fix more memory leaks in netcdf-c library 2018-11-15 10:00:38 -07:00
tst_null_byte_padding.sh Corrected pathing oversight. 2017-11-21 12:17:32 -07:00
tst_opaque_data.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
tst_output.sh 1. Keep up to date by merging master 2018-01-16 11:00:09 -07:00
tst_special_atts.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
tst_string_data.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
tst_unicode.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
tst_utf8.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
tst_vlen_data.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
tst_vlen_demo.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
utils.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
utils.h ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
vardata.c ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
vardata.h ncdump, other directories updated with copyright stanza. 2018-12-06 15:36:53 -07:00
XGetopt.c