[Tarantool-patches] [PATCH v4 0/4] crash: implement sending feedback

[Cyrill Gorcunov <gorcunov@gmail.com>]

Our feedback daemon sends only a few portions of usage
statistics. But crash dumps are pretty important for us
as well, because real users may catch a way more important
issues than our testing farm, it is simply impossible to
cover all possible scenarios.

For this sake, if crash happens we can send it to our
feedback server.

In this series we implement only base functionality and
may extend it later.

I didn't find yet a simple way to test this code anything
but manually.

Any comments are highly appreciated.

v2:
 - left for internal use

v3 (by Mons):
 - enable sending crash report by default but give
   an ability to disable it
 - use vfork when running subsequent exeutable of
   tarantool to send report, since plain execve won't
   produce local crashdump

v4 (by Vlad):
 - move all fatal's signal handling to crash.c
 - export only those helpers which are really needed
 - update backtrace to use size as an arument
 - provide strlcpy if not present on the system
 - use static allocated buffer for report
 - use base64 library instead of own implmentation

issue https://github.com/tarantool/tarantool/issues/5261
branch gorcunov/gh-5261-crash-report-4

Cyrill Gorcunov (4):
  util: introduce strlcpy helper
  backtrace: allow to specify destination buffer
  crash: move fatal signal handling in
  crash: report crash data to the feedback server

 CMakeLists.txt                  |   1 +
 src/box/lua/feedback_daemon.lua |   7 +
 src/box/lua/load_cfg.lua        |   3 +
 src/exports.h                   |   1 +
 src/lib/core/CMakeLists.txt     |   3 +-
 src/lib/core/backtrace.cc       |  12 +-
 src/lib/core/backtrace.h        |   3 +
 src/lib/core/crash.c            | 554 ++++++++++++++++++++++++++++++++
 src/lib/core/crash.h            |  44 +++
 src/lib/core/util.c             |  14 +
 src/main.cc                     | 139 +-------
 src/trivia/config.h.cmake       |   5 +
 src/trivia/util.h               |  15 +
 test/box/admin.result           |   2 +
 test/box/cfg.result             |   4 +
 15 files changed, 667 insertions(+), 140 deletions(-)
 create mode 100644 src/lib/core/crash.c
 create mode 100644 src/lib/core/crash.h


base-commit: a14dad9543360c49c2cf8906a88e09271cad91b6
-- 
2.26.2