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59e04ae071
cloud using a variant of the Zarr protocol and storage format. This enhancement is generically referred to as "NCZarr". The data model supported by NCZarr is netcdf-4 minus the user-defined types and the String type. In this sense it is similar to the CDF-5 data model. More detailed information about enabling and using NCZarr is described in the document NUG/nczarr.md and in a [Unidata Developer's blog entry](https://www.unidata.ucar.edu/blogs/developer/en/entry/overview-of-zarr-support-in). WARNING: this code has had limited testing, so do use this version for production work. Also, performance improvements are ongoing. Note especially the following platform matrix of successful tests: Platform | Build System | S3 support ------------------------------------ Linux+gcc | Automake | yes Linux+gcc | CMake | yes Visual Studio | CMake | no Additionally, and as a consequence of the addition of NCZarr, major changes have been made to the Filter API. NOTE: NCZarr does not yet support filters, but these changes are enablers for that support in the future. Note that it is possible (probable?) that there will be some accidental reversions if the changes here did not correctly mimic the existing filter testing. In any case, previously filter ids and parameters were of type unsigned int. In order to support the more general zarr filter model, this was all converted to char*. The old HDF5-specific, unsigned int operations are still supported but they are wrappers around the new, char* based nc_filterx_XXX functions. This entailed at least the following changes: 1. Added the files libdispatch/dfilterx.c and include/ncfilter.h 2. Some filterx utilities have been moved to libdispatch/daux.c 3. A new entry, "filter_actions" was added to the NCDispatch table and the version bumped. 4. An overly complex set of structs was created to support funnelling all of the filterx operations thru a single dispatch "filter_actions" entry. 5. Move common code to from libhdf5 to libsrc4 so that it is accessible to nczarr. Changes directly related to Zarr: 1. Modified CMakeList.txt and configure.ac to support both C and C++ -- this is in support of S3 support via the awd-sdk libraries. 2. Define a size64_t type to support nczarr. 3. More reworking of libdispatch/dinfermodel.c to support zarr and to regularize the structure of the fragments section of a URL. Changes not directly related to Zarr: 1. Make client-side filter registration be conditional, with default off. 2. Hack include/nc4internal.h to make some flags added by Ed be unique: e.g. NC_CREAT, NC_INDEF, etc. 3. cleanup include/nchttp.h and libdispatch/dhttp.c. 4. Misc. changes to support compiling under Visual Studio including: * Better testing under windows for dirent.h and opendir and closedir. 5. Misc. changes to the oc2 code to support various libcurl CURLOPT flags and to centralize error reporting. 6. By default, suppress the vlen tests that have unfixed memory leaks; add option to enable them. 7. Make part of the nc_test/test_byterange.sh test be contingent on remotetest.unidata.ucar.edu being accessible. Changes Left TO-DO: 1. fix provenance code, it is too HDF5 specific.
179 lines
5.7 KiB
C
179 lines
5.7 KiB
C
/* Copyright 2018-2018 University Corporation for Atmospheric
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Research/Unidata. */
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/**
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* @file
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* @internal Includes prototypes for libzarr dispatch functions.
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*
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* @author Dennis Heimbigner, Ed Hartnett
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*/
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#ifndef ZDISPATCH_H
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#define ZDISPATCH_H
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#include "zincludes.h"
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#if defined(__cplusplus)
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extern "C" {
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#endif
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EXTERNL int NCZ_create(const char *path, int cmode, size_t initialsz, int basepe, size_t *chunksizehintp, void* parameters, const NC_Dispatch*, int);
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EXTERNL int NCZ_open(const char *path, int mode, int basepe, size_t *chunksizehintp, void* parameters, const NC_Dispatch*, int);
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EXTERNL int NCZ_redef(int ncid);
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EXTERNL int NCZ__enddef(int ncid, size_t h_minfree, size_t v_align, size_t v_minfree, size_t r_align);
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EXTERNL int NCZ_sync(int ncid);
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EXTERNL int NCZ_abort(int ncid);
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EXTERNL int NCZ_close(int ncid,void*);
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EXTERNL int NCZ_set_fill(int ncid, int fillmode, int *old_modep);
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EXTERNL int NCZ_set_base_pe(int ncid, int pe);
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EXTERNL int NCZ_inq_base_pe(int ncid, int *pe);
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EXTERNL int NCZ_inq_format(int ncid, int *formatp);
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EXTERNL int NCZ_inq_format_extended(int ncid, int *formatp, int *modep);
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EXTERNL int NCZ_inq(int ncid, int *ndimsp, int *nvarsp, int *nattsp, int *unlimdimidp);
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EXTERNL int NCZ_inq_type(int, nc_type, char *, size_t *);
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/* Begin _dim */
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EXTERNL int NCZ_def_dim(int ncid, const char *name, size_t len, int *idp);
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EXTERNL int NCZ_inq_dimid(int ncid, const char *name, int *idp);
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EXTERNL int NCZ_inq_dim(int ncid, int dimid, char *name, size_t *lenp);
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EXTERNL int NCZ_inq_unlimdim(int ncid, int *unlimdimidp);
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EXTERNL int NCZ_rename_dim(int ncid, int dimid, const char *name);
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/* End _dim */
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/* Begin _att */
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EXTERNL int NCZ_inq_att(int ncid, int varid, const char *name, nc_type *xtypep, size_t *lenp);
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EXTERNL int NCZ_inq_attid(int ncid, int varid, const char *name, int *idp);
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EXTERNL int NCZ_inq_attname(int ncid, int varid, int attnum, char *name);
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EXTERNL int NCZ_rename_att(int ncid, int varid, const char *name, const char *newname);
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EXTERNL int NCZ_del_att(int ncid, int varid, const char *name);
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/* End _att */
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/* Begin {put,get}_att */
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EXTERNL int NCZ_get_att(int ncid, int varid, const char *name, void *value, nc_type);
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EXTERNL int NCZ_put_att(int ncid, int varid, const char *name, nc_type file_type, size_t len, const void *data, nc_type mem_type);
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/* End {put,get}_att */
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/* Begin _var */
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EXTERNL int NCZ_def_var(int ncid, const char *name, nc_type xtype, int ndims, const int *dimidsp, int *varidp);
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EXTERNL int NCZ_inq_var_all(int ncid, int varid, char *name, nc_type *xtypep, int *ndimsp, int *dimidsp, int *nattsp, int *shufflep, int *deflatep, int *deflate_levelp, int *fletcher32p, int *contiguousp, size_t *chunksizesp, int *no_fill, void *fill_valuep, int *endiannessp, unsigned int* idp, size_t* nparamsp, unsigned int* params
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);
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EXTERNL int NCZ_inq_varid(int ncid, const char *name, int *varidp);
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EXTERNL int NCZ_rename_var(int ncid, int varid, const char *name);
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EXTERNL int NCZ_put_vara(int ncid, int varid, const size_t *start, const size_t *count, const void *value, nc_type);
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EXTERNL int NCZ_get_vara(int ncid, int varid, const size_t *start, const size_t *count, void *value, nc_type);
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extern int
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NCZ_put_vars(int ncid, int varid, const size_t *start, const size_t *count, const ptrdiff_t* stride, const void *value, nc_type);
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extern int
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NCZ_get_vars(int ncid, int varid, const size_t *start, const size_t *count, const ptrdiff_t* stride, void *value, nc_type);
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/* End _var */
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/* netCDF4 API only */
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EXTERNL int NCZ_inq_ncid(int, const char *, int *);
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EXTERNL int NCZ_inq_grps(int, int *, int *);
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EXTERNL int NCZ_inq_grpname(int, char *);
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EXTERNL int NCZ_inq_grpname_full(int, size_t *, char *);
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EXTERNL int NCZ_inq_grp_parent(int, int *);
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EXTERNL int NCZ_inq_grp_full_ncid(int, const char *, int *);
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EXTERNL int NCZ_inq_varids(int, int * nvars, int *);
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EXTERNL int NCZ_inq_dimids(int, int * ndims, int *, int);
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EXTERNL int NCZ_inq_typeids(int, int * ntypes, int *);
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EXTERNL int NCZ_inq_type_equal(int, nc_type, int, nc_type, int *);
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EXTERNL int NCZ_def_grp(int, const char *, int *);
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EXTERNL int NCZ_rename_grp(int, const char *);
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EXTERNL int NCZ_inq_user_type(int, nc_type, char *, size_t *, nc_type *, size_t *, int *);
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EXTERNL int NCZ_def_compound(int, size_t, const char *, nc_type *);
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EXTERNL int NCZ_insert_compound(int, nc_type, const char *, size_t, nc_type);
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EXTERNL int NCZ_insert_array_compound(int, nc_type, const char *, size_t, nc_type, int, const int *);
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EXTERNL int NCZ_inq_typeid(int, const char *, nc_type *);
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EXTERNL int NCZ_inq_compound_field(int, nc_type, int, char *, size_t *, nc_type *, int *, int *);
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EXTERNL int NCZ_inq_compound_fieldindex(int, nc_type, const char *, int *);
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EXTERNL int NCZ_def_vlen(int, const char *, nc_type base_typeid, nc_type *);
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EXTERNL int NCZ_put_vlen_element(int, int, void *, size_t, const void *);
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EXTERNL int NCZ_get_vlen_element(int, int, const void *, size_t *, void *);
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EXTERNL int NCZ_def_enum(int, nc_type, const char *, nc_type *);
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EXTERNL int NCZ_insert_enum(int, nc_type, const char *, const void *);
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EXTERNL int NCZ_inq_enum_member(int, nc_type, int, char *, void *);
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EXTERNL int NCZ_inq_enum_ident(int, nc_type, long long, char *);
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EXTERNL int NCZ_def_opaque(int, size_t, const char *, nc_type *);
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EXTERNL int NCZ_def_var_deflate(int, int, int, int, int);
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EXTERNL int NCZ_def_var_fletcher32(int, int, int);
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EXTERNL int NCZ_def_var_chunking(int, int, int, const size_t *);
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EXTERNL int NCZ_def_var_fill(int, int, int, const void *);
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EXTERNL int NCZ_def_var_endian(int, int, int);
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EXTERNL int NCZ_def_var_filter(int, int, unsigned int, size_t, const unsigned int*);
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EXTERNL int NCZ_inq_unlimdims(int, int *, int *);
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#if defined(__cplusplus)
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}
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#endif
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#endif /* ZDISPATCH_H */
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