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add tracing to fileopen failure before throwing error for more info

This commit is contained in:
Jon Fu 2021-02-02 14:30:12 -05:00
parent c25a3f11c3
commit 5fa7c73810
1 changed files with 7 additions and 1 deletions
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8
flow/Platform.cpp
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@ -18,6 +18,7 @@
* limitations under the License.
*/
#include <sys/errno.h>
#ifdef _WIN32
// This has to come as the first include on Win32 for rand_s() to be found
#define _CRT_RAND_S
@ -2269,7 +2270,12 @@ int64_t fileSize(std::string const& filename) {
std::string readFileBytes( std::string const& filename, int maxSize ) {
std::string s;
FILE* f = fopen(filename.c_str(), "rb" FOPEN_CLOEXEC_MODE);
if (!f) throw file_not_readable();
if (!f) {
TraceEvent(SevError, "FileOpenError")
.detail("Filename", filename)
.detail("Errno", errno);
throw file_not_readable();
}
try {
fseek(f, 0, SEEK_END);
size_t size = ftell(f);