svn_error_t *
svn_fs_fs__set_rep_reference(svn_fs_t *fs,
representation_t *rep,
apr_pool_t *pool)
{
fs_fs_data_t *ffd = fs->fsap_data;
svn_sqlite__stmt_t *stmt;
svn_error_t *err;
svn_checksum_t checksum;
checksum.kind = svn_checksum_sha1;
checksum.digest = rep->sha1_digest;
SVN_ERR_ASSERT(ffd->rep_sharing_allowed);
if (! ffd->rep_cache_db)
SVN_ERR(svn_fs_fs__open_rep_cache(fs, pool));
/* We only allow SHA1 checksums in this table. */
if (! rep->has_sha1)
return svn_error_create(SVN_ERR_BAD_CHECKSUM_KIND, NULL,
_("Only SHA1 checksums can be used as keys in the "
"rep_cache table.\n"));
SVN_ERR(svn_sqlite__get_statement(&stmt, ffd->rep_cache_db, STMT_SET_REP));
SVN_ERR(svn_sqlite__bindf(stmt, "siiii",
svn_checksum_to_cstring(&checksum, pool),
(apr_int64_t) rep->revision,
(apr_int64_t) rep->item_index,
(apr_int64_t) rep->size,
(apr_int64_t) rep->expanded_size));
err = svn_sqlite__insert(NULL, stmt);
if (err)
{
representation_t *old_rep;
if (err->apr_err != SVN_ERR_SQLITE_CONSTRAINT)
return svn_error_trace(err);
svn_error_clear(err);
/* Constraint failed so the mapping for SHA1_CHECKSUM->REP
should exist. If so that's cool -- just do nothing. If not,
that's a red flag! */
SVN_ERR(svn_fs_fs__get_rep_reference(&old_rep, fs, &checksum, pool));
if (!old_rep)
{
/* Something really odd at this point, we failed to insert the
checksum AND failed to read an existing checksum. Do we need
to flag this? */
}
}
return SVN_NO_ERROR;
}
svn_error_t *
svn_fs_fs__set_rep_reference(svn_fs_t *fs,
representation_t *rep,
svn_boolean_t reject_dup,
apr_pool_t *pool)
{
fs_fs_data_t *ffd = fs->fsap_data;
svn_sqlite__stmt_t *stmt;
svn_error_t *err;
SVN_ERR_ASSERT(ffd->rep_sharing_allowed);
if (! ffd->rep_cache_db)
SVN_ERR(svn_fs_fs__open_rep_cache(fs, pool));
/* We only allow SHA1 checksums in this table. */
if (rep->sha1_checksum == NULL)
return svn_error_create(SVN_ERR_BAD_CHECKSUM_KIND, NULL,
_("Only SHA1 checksums can be used as keys in the "
"rep_cache table.\n"));
SVN_ERR(svn_sqlite__get_statement(&stmt, ffd->rep_cache_db, STMT_SET_REP));
SVN_ERR(svn_sqlite__bindf(stmt, "siiii",
svn_checksum_to_cstring(rep->sha1_checksum, pool),
(apr_int64_t) rep->revision,
(apr_int64_t) rep->offset,
(apr_int64_t) rep->size,
(apr_int64_t) rep->expanded_size));
err = svn_sqlite__insert(NULL, stmt);
if (err)
{
representation_t *old_rep;
if (err->apr_err != SVN_ERR_SQLITE_CONSTRAINT)
return svn_error_trace(err);
svn_error_clear(err);
/* Constraint failed so the mapping for SHA1_CHECKSUM->REP
should exist. If so, and the value is the same one we were
about to write, that's cool -- just do nothing. If, however,
the value is *different*, that's a red flag! */
SVN_ERR(svn_fs_fs__get_rep_reference(&old_rep, fs, rep->sha1_checksum,
pool));
if (old_rep)
{
if (reject_dup && ((old_rep->revision != rep->revision)
|| (old_rep->offset != rep->offset)
|| (old_rep->size != rep->size)
|| (old_rep->expanded_size != rep->expanded_size)))
return svn_error_createf(SVN_ERR_FS_CORRUPT, NULL,
apr_psprintf(pool,
_("Representation key for checksum '%%s' exists "
"in filesystem '%%s' with a different value "
"(%%ld,%%%s,%%%s,%%%s) than what we were about "
"to store (%%ld,%%%s,%%%s,%%%s)"),
APR_OFF_T_FMT, SVN_FILESIZE_T_FMT,
SVN_FILESIZE_T_FMT, APR_OFF_T_FMT,
SVN_FILESIZE_T_FMT, SVN_FILESIZE_T_FMT),
svn_checksum_to_cstring_display(rep->sha1_checksum, pool),
fs->path, old_rep->revision, old_rep->offset, old_rep->size,
old_rep->expanded_size, rep->revision, rep->offset, rep->size,
rep->expanded_size);
else
return SVN_NO_ERROR;
}
else
{
/* Something really odd at this point, we failed to insert the
checksum AND failed to read an existing checksum. Do we need
to flag this? */
}
}
return SVN_NO_ERROR;
}
