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https://github.com/Unidata/netcdf-c.git
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49737888ca
## Improvements to S3 Documentation * Create a new document *quickstart_paths.md* that give a summary of the legal path formats used by netcdf-c. This includes both file paths and URL paths. * Modify *nczarr.md* to remove most of the S3 related text. * Move the S3 text from *nczarr.md* to a new document *cloud.md*. * Add some S3-related text to the *byterange.md* document. Hopefully, this will make it easier for users to find the information they want. ## Rebuild NCZarr Testing In order to avoid problems with running make check in parallel, two changes were made: 1. The *nczarr_test* test system was rebuilt. Now, for each test. any generated files are kept in a test-specific directory, isolated from all other test executions. 2. Similarly, since the S3 test bucket is shared, any generated S3 objects are isolated using a test-specific key path. ## Other S3 Related Changes * Add code to ensure that files created on S3 are reclaimed at end of testing. * Used the bash "trap" command to ensure S3 cleanup even if the test fails. * Cleanup the S3 related configure.ac flag set since S3 is used in several places. So now one should use the option *--enable-s3* instead of *--enable-nczarr-s3*, although the latter is still kept as a deprecated alias for the former. * Get some of the github actions yml to work with S3; required fixing various test scripts adding a secret to access the Unidata S3 bucket. * Cleanup S3 portion of libnetcdf.settings.in and netcdf_meta.h.in and test_common.in. * Merge partial S3 support into dhttp.c. * Create an experimental s3 access library especially for use with Windows. It is enabled by using the options *--enable-s3-internal* (automake) or *-DENABLE_S3_INTERNAL=ON* (CMake). Also add a unit-test for it. * Move some definitions from ncrc.h to ncs3sdk.h ## Other Changes * Provide a default implementation of strlcpy and move this and similar defaults into *dmissing.c*.
146 lines
3.2 KiB
C
146 lines
3.2 KiB
C
/*
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Copyright (c) 1998-2018 University Corporation for Atmospheric Research/Unidata
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See LICENSE.txt for license information.
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*/
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#include "config.h"
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#include "ncdispatch.h"
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#include "ncuri.h"
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#include "nclog.h"
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#include "ncbytes.h"
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#include "ncrc.h"
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#include "ncoffsets.h"
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#include "ncpathmgr.h"
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#include "ncxml.h"
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#include "nc4internal.h"
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/* Required for getcwd, other functions. */
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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/* Required for getcwd, other functions. */
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#ifdef _WIN32
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#include <direct.h>
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#endif
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#if defined(ENABLE_BYTERANGE) || defined(ENABLE_DAP) || defined(ENABLE_DAP4)
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#include <curl/curl.h>
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#endif
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#ifdef ENABLE_S3
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#include "ncs3sdk.h"
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#endif
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#define MAXPATH 1024
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/* Define vectors of zeros and ones for use with various nc_get_varX functions */
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/* Note, this form of initialization fails under Cygwin */
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size_t NC_coord_zero[NC_MAX_VAR_DIMS] = {0};
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size_t NC_coord_one[NC_MAX_VAR_DIMS] = {1};
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ptrdiff_t NC_stride_one[NC_MAX_VAR_DIMS] = {1};
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/*
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static nc_type longtype = (sizeof(long) == sizeof(int)?NC_INT:NC_INT64);
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static nc_type ulongtype = (sizeof(unsigned long) == sizeof(unsigned int)?NC_UINT:NC_UINT64);
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*/
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/* Allow dispatch to do general initialization and finalization */
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int
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NCDISPATCH_initialize(void)
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{
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int status = NC_NOERR;
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int i;
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NCglobalstate* globalstate = NULL;
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for(i=0;i<NC_MAX_VAR_DIMS;i++) {
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NC_coord_zero[i] = 0;
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NC_coord_one[i] = 1;
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NC_stride_one[i] = 1;
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}
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globalstate = NC_getglobalstate(); /* will allocate and clear */
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/* Capture temp dir*/
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{
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char* tempdir = NULL;
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#if defined _WIN32 || defined __MSYS__ || defined __CYGWIN__
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tempdir = getenv("TEMP");
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#else
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tempdir = "/tmp";
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#endif
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if(tempdir == NULL) {
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fprintf(stderr,"Cannot find a temp dir; using ./\n");
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tempdir = ".";
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}
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globalstate->tempdir= strdup(tempdir);
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}
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/* Capture $HOME */
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{
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#if defined(_WIN32) && !defined(__MINGW32__)
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char* home = getenv("USERPROFILE");
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#else
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char* home = getenv("HOME");
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#endif
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if(home == NULL) {
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/* use cwd */
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home = malloc(MAXPATH+1);
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NCgetcwd(home,MAXPATH);
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} else
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home = strdup(home); /* make it always free'able */
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assert(home != NULL);
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NCpathcanonical(home,&globalstate->home);
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nullfree(home);
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}
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/* Capture $CWD */
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{
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char cwdbuf[4096];
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cwdbuf[0] = '\0';
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(void)NCgetcwd(cwdbuf,sizeof(cwdbuf));
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if(strlen(cwdbuf) == 0) {
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/* use tempdir */
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strcpy(cwdbuf, globalstate->tempdir);
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}
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globalstate->cwd = strdup(cwdbuf);
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}
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ncloginit();
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/* Now load RC Files */
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ncrc_initialize();
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/* Compute type alignments */
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NC_compute_alignments();
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#if defined(ENABLE_BYTERANGE) || defined(ENABLE_DAP) || defined(ENABLE_DAP4)
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/* Initialize curl if it is being used */
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{
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CURLcode cstat = curl_global_init(CURL_GLOBAL_ALL);
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if(cstat != CURLE_OK)
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status = NC_ECURL;
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}
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#endif
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return status;
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}
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int
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NCDISPATCH_finalize(void)
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{
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int status = NC_NOERR;
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NC_freeglobalstate();
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#if defined(ENABLE_BYTERANGE) || defined(ENABLE_DAP) || defined(ENABLE_DAP4)
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curl_global_cleanup();
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#endif
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#if defined(ENABLE_DAP4)
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ncxml_finalize();
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#endif
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return status;
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}
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