[Tarantool-patches] [PATCH v3 4/4] cfg: configure crash report sending

[Cyrill Gorcunov <gorcunov@gmail.com>]

Introcude a new option to box.cfg{} to control sending
of a crash report.

There is no simple way to test all this because it involves
subsequent runs of tarantool. I've been using one terminal
with tarantool running inside as

> box.cfg{feedback_host="127.0.0.1:1500"}

another terminal to listen for incoming data

> while true ; do nc -l -p 1500 -c 'echo -e "HTTP/1.1 200 OK\n\n $(date)"'; done

and one another to kill main tarantool instance

> kill -11 `pidof tarantool`

If we run as

> box.cfg{feedback_host="127.0.0.1:1500", feedback_no_crashinfo=true}

then the crash report will not be sent.

Closes #5261

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>

@TarantoolBot document
Title: Configuration reference
Header: Feedback

For better analisys of program crashes the information associated with
the crash such as

 - utsname (similar to `uname -a` output except the network name)
 - build information
 - reason for a crash
 - call backtrace

is sent to the feedback server. To disable it set `feedback_no_crashinfo`
to `false`.
---
 src/box/lua/feedback_daemon.lua | 7 +++++++
 src/box/lua/load_cfg.lua        | 3 +++
 src/lib/core/errstat.c          | 2 +-
 test/box/admin.result           | 2 ++
 test/box/cfg.result             | 4 ++++
 5 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/box/lua/feedback_daemon.lua b/src/box/lua/feedback_daemon.lua
index 1d39012ed..613d2864c 100644
--- a/src/box/lua/feedback_daemon.lua
+++ b/src/box/lua/feedback_daemon.lua
@@ -1,6 +1,7 @@
 -- feedback_daemon.lua (internal file)
 --
 local log   = require('log')
+local ffi   = require('ffi')
 local json  = require('json')
 local fiber = require('fiber')
 local http  = require('http.client')
@@ -360,12 +361,18 @@ local function reload(self)
     self:start()
 end
 
+ffi.cdef[[
+void
+cfg_errstat_set_params(void);
+]]
+
 setmetatable(daemon, {
     __index = {
         set_feedback_params = function()
             daemon.enabled  = box.cfg.feedback_enabled
             daemon.host     = box.cfg.feedback_host
             daemon.interval = box.cfg.feedback_interval
+            ffi.C.cfg_errstat_set_params()
             reload(daemon)
             return
         end,
diff --git a/src/box/lua/load_cfg.lua b/src/box/lua/load_cfg.lua
index 770442052..1878c31bd 100644
--- a/src/box/lua/load_cfg.lua
+++ b/src/box/lua/load_cfg.lua
@@ -99,6 +99,7 @@ local default_cfg = {
     replication_skip_conflict = false,
     replication_anon      = false,
     feedback_enabled      = true,
+    feedback_no_crashinfo = false,
     feedback_host         = "https://feedback.tarantool.io",
     feedback_interval     = 3600,
     net_msg_max           = 768,
@@ -179,6 +180,7 @@ local template_cfg = {
     replication_skip_conflict = 'boolean',
     replication_anon      = 'boolean',
     feedback_enabled      = ifdef_feedback('boolean'),
+    feedback_no_crashinfo = ifdef_feedback('boolean'),
     feedback_host         = ifdef_feedback('string'),
     feedback_interval     = ifdef_feedback('number'),
     net_msg_max           = 'number',
@@ -277,6 +279,7 @@ local dynamic_cfg = {
     checkpoint_wal_threshold = private.cfg_set_checkpoint_wal_threshold,
     worker_pool_threads     = private.cfg_set_worker_pool_threads,
     feedback_enabled        = ifdef_feedback_set_params,
+    feedback_no_crashinfo   = ifdef_feedback_set_params,
     feedback_host           = ifdef_feedback_set_params,
     feedback_interval       = ifdef_feedback_set_params,
     -- do nothing, affects new replicas, which query this value on start
diff --git a/src/lib/core/errstat.c b/src/lib/core/errstat.c
index 992bc426a..8664908f6 100644
--- a/src/lib/core/errstat.c
+++ b/src/lib/core/errstat.c
@@ -23,7 +23,7 @@
 #define pr_panic(fmt, ...)	panic(pr_fmt(fmt), ##__VA_ARGS__)
 
 static struct errstat glob_errstat;
-static bool cfg_send_crash = false;
+static bool cfg_send_crash = true;
 
 /*
  * We don't need it to be optimized but rather a compact form.
diff --git a/test/box/admin.result b/test/box/admin.result
index 8c5626c36..b8fa68749 100644
--- a/test/box/admin.result
+++ b/test/box/admin.result
@@ -47,6 +47,8 @@ cfg_filter(box.cfg)
     - https://feedback.tarantool.io
   - - feedback_interval
     - 3600
+  - - feedback_no_crashinfo
+    - false
   - - force_recovery
     - false
   - - hot_standby
diff --git a/test/box/cfg.result b/test/box/cfg.result
index 5ca6ce72b..68c45b4cc 100644
--- a/test/box/cfg.result
+++ b/test/box/cfg.result
@@ -35,6 +35,8 @@ cfg_filter(box.cfg)
  |     - https://feedback.tarantool.io
  |   - - feedback_interval
  |     - 3600
+ |   - - feedback_no_crashinfo
+ |     - false
  |   - - force_recovery
  |     - false
  |   - - hot_standby
@@ -148,6 +150,8 @@ cfg_filter(box.cfg)
  |     - https://feedback.tarantool.io
  |   - - feedback_interval
  |     - 3600
+ |   - - feedback_no_crashinfo
+ |     - false
  |   - - force_recovery
  |     - false
  |   - - hot_standby
-- 
2.26.2