docker build errors preprocessor/binding.cpp

[taislapta]

hey fellas,

I got 2 issues by building docker image in > node-gyp rebuild stage

1. include missing

../preprocessor/zabbix/src/libs/zbxcommon/misc.c: In function 'zbx_timespec':
../preprocessor/zabbix/src/libs/zbxcommon/misc.c:243:28: warning: implicit declaration of function 'gettimeofday' [-Wimplicit-function-declaration]                              
  if (0 != rc && 0 == (rc = gettimeofday(&tv, NULL)))    

I have fixed it by adding
#include <sys/time.h> in to /preprocessor/zabbix/src/libs/zbxcommon/misc.c
and that is gone.

2. issue in binding.cpp struggling to fix

  CXX(target) Release/obj.target/db4bix_preproc/preprocessor/binding.o
../preprocessor/binding.cpp: In function 'Napi::Value Preproc(const Napi::CallbackInfo&)':
../preprocessor/binding.cpp:236:17: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]                                                           
     resultStr = "Shit happens!";                                                                                                                                                
                 ^~~~~~~~~~~~~~~  

I suppose that maight be a case of communication issues between Zabbix-server and db4bix proxy.

3. off topic just FYI
   I noted that on zabbix sever : 4.4.7 (docker) I was unable to register db4bix proxy due to docker service name was not the option. I got below message even form server was able to ping zabbix_db4bix(same swarm network). Once I replaced service name to IP on the zabbix-server Proxy configuration -got connection established. That's not db4bix issue but looks like lack on zabbix functionality.
   cannot accept connection from proxy "DB4bix01" at "10.0.5.46", allowed address: "zabbix_db4bix": connection is not allowed

To Reproduce
just build it

Client: Docker Engine - Community
 Version:           19.03.8
 API version:       1.40
 Go version:        go1.12.17
 Git commit:        afacb8b7f0
 Built:             Wed Mar 11 01:25:46 2020
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          19.03.8
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.12.17
  Git commit:       afacb8b7f0
  Built:            Wed Mar 11 01:24:19 2020
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.2.13
  GitCommit:        7ad184331fa3e55e52b890ea95e65ba581ae3429
 runc:
  Version:          1.0.0-rc10
  GitCommit:        dc9208a3303feef5b3839f4323d9beb36df0a9dd
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

Debian buster
4.15.0-91-generic #92-Ubuntu

zabbix 4.4.7