Logging logs in Windows

Feb 03, 2023

Alexander Zhirov

Feb 03, 2023

Richard (Rikki) Andrew Cattermole

Feb 03, 2023

Alexander Zhirov

Feb 03, 2023

Richard (Rikki) Andrew Cattermole

Feb 04, 2023

Alexander Zhirov

Feb 04, 2023

Richard (Rikki) Andrew Cattermole

Feb 04, 2023

Alexander Zhirov

Apr 18, 2023

Alexander Zhirov

Apr 18, 2023

Richard (Rikki) Andrew Cattermole

Apr 18, 2023

Alexander Zhirov

Feb 08, 2023

Kagamin

C:\sources\pxe-restore>dub build -b release Starting Performing "release" build using dmd for x86_64. Building pxe-restore ~master: building configuration [application] source\azh\log.d(3,8): Error: module `core.sys.posix.syslog` import `syslog` not found source\azh\query.d(7,8): Error: module `core.sys.posix.syslog` import `LOG_NOTICE` not found source\azh\query.d(7,8): Error: module `core.sys.posix.syslog` import `LOG_ERR` not found source\azh\query.d(7,8): Error: module `core.sys.posix.syslog` import `LOG_INFO` not found source\azh\query.d(7,8): Error: module `core.sys.posix.syslog` import `LOG_WARNING` not found source\app.d(12,8): Error: module `core.sys.posix.syslog` import `LOG_NOTICE` not found source\app.d(12,8): Error: module `core.sys.posix.syslog` import `LOG_ERR` not found source\app.d(12,8): Error: module `core.sys.posix.syslog` import `LOG_INFO` not found source\app.d(12,8): Error: module `core.sys.posix.syslog` import `LOG_WARNING` not found Error dmd failed with exit code 1.

... import core.sys.posix.syslog : LOG_NOTICE, LOG_ERR, LOG_INFO, LOG_WARNING; import core.sys.posix.syslog : syslog; ... void log(int priority, string message) { syslog(priority, (message ~ "\0").ptr); } ...

Yes syslog is not available on Windows as that is a Posix API. All of your calls to syslog should be guarded by a version for Posix. The Windows Event Log which is comparable, isn't 1:1 so its a bit of a task to replace it.

On 04/02/2023 6:55 AM, Alexander Zhirov wrote: > On Friday, 3 February 2023 at 16:00:55 UTC, Richard (Rikki) Andrew Cattermole wrote: >> Yes syslog is not available on Windows as that is a Posix API. All of your calls to syslog should be guarded by a version for Posix. > > Is there an analogue for Windows? And is it possible to implement it with the similarity of directives, as in C? The analogue is the Windows Event Log and its not 1:1. Here is a starting point that I myself have used in the past: https://github.com/php/php-src/blob/master/win32/wsyslog.c

On 05/02/2023 2:31 AM, Alexander Zhirov wrote: > On Friday, 3 February 2023 at 18:02:59 UTC, Richard (Rikki) Andrew Cattermole wrote: >> Here is a starting point that I myself have used in the past: > > I understand that programming under Windows is a shame for a programmer, but is there really no ready-made solution for using the system log in Windows? Not at all. syslog is the system api for logging on Posix, event log is the Windows equivalent system api. They are both good in their own ways, even if they are not 1:1. I can't see anything on dub-registry or in Phobos. But its not hard to implement. I.e. here are my functions for syslog and Windows Event log (I won't copy it all, it won't be helpful & the file log function is giant compared). ```d void syslog() { version (Posix) { import core.sys.posix.syslog : syslog; syslog(prioritySyslogForLevels[level], unsafeTextMessageComposite.ptr); } } void windowsEvents() { version (Windows) { import core.sys.windows.windows : ReportEventA, WORD, DWORD, EVENTLOG_INFORMATION_TYPE, EVENTLOG_WARNING_TYPE, EVENTLOG_ERROR_TYPE; static WORD[] WTypes = [ EVENTLOG_INFORMATION_TYPE, EVENTLOG_INFORMATION_TYPE, EVENTLOG_WARNING_TYPE, EVENTLOG_ERROR_TYPE, EVENTLOG_ERROR_TYPE, EVENTLOG_ERROR_TYPE ]; static DWORD[] dwEventID = [0, 0, 0, 0, 0, 0]; const(char)*[2] messages = [ ModuleLine2.ptr, cast(char*)unsafeTextMessageComposite.ptr + unsafeDateTime.length + ModuleLine.length ]; ReportEventA(windowsEventHandle, WTypes[level], 0, dwEventID[level], cast(void*)null, 2, 0, &messages[0], cast(void*)null); } } ``` Note: you also need to setup an event source on Windows i.e. ```d import core.sys.windows.windows : RegisterEventSourceA; windowsEventHandle = RegisterEventSourceA(null, cast(char*)processName.ptr); ``` and to close it: ```d import core.sys.windows.windows : DeregisterEventSource; DeregisterEventSource(windowsEventHandle); ```

April 18, 2023

Re: Logging logs in Windows

Posted by Alexander Zhirov
in reply to Richard (Rikki) Andrew Cattermole

Permalink

Alexander Zhirov

Posted in reply to Richard (Rikki) Andrew Cattermole

Permalink

On Saturday, 4 February 2023 at 14:48:55 UTC, Richard (Rikki) Andrew Cattermole wrote:

I.e. here are my functions for syslog and Windows Event log (I won't copy it all, it won't be helpful & the file log function is giant compared).

            void syslog() {
                version (Posix) {
                    import core.sys.posix.syslog : syslog;

                    syslog(prioritySyslogForLevels[level], unsafeTextMessageComposite.ptr);
                }
            }

            void windowsEvents() {
                version (Windows) {
                    import core.sys.windows.windows : ReportEventA, WORD, DWORD, EVENTLOG_INFORMATION_TYPE,
                        EVENTLOG_WARNING_TYPE, EVENTLOG_ERROR_TYPE;

                    static WORD[] WTypes = [
                        EVENTLOG_INFORMATION_TYPE, EVENTLOG_INFORMATION_TYPE, EVENTLOG_WARNING_TYPE,
                        EVENTLOG_ERROR_TYPE, EVENTLOG_ERROR_TYPE, EVENTLOG_ERROR_TYPE
                    ];

                    static DWORD[] dwEventID = [0, 0, 0, 0, 0, 0];
                    const(char)*[2] messages = [
                        ModuleLine2.ptr,
                        cast(char*)unsafeTextMessageComposite.ptr + unsafeDateTime.length + ModuleLine.length
                    ];

                    ReportEventA(windowsEventHandle, WTypes[level], 0, dwEventID[level], cast(void*)null, 2, 0,
                            &messages[0], cast(void*)null);
                }
            }

Note: you also need to setup an event source on Windows i.e.

import core.sys.windows.windows : RegisterEventSourceA;
windowsEventHandle = RegisterEventSourceA(null, cast(char*)processName.ptr);

and to close it:

import core.sys.windows.windows : DeregisterEventSource;
DeregisterEventSource(windowsEventHandle);

I tried to make a simple recording, but when compiling, he swears at linking.

import core.sys.windows.windows;

void writeToEventLog(LPCSTR pszSrcName, LPCSTR message) {
    HANDLE hEventLog = RegisterEventSourceA(NULL, pszSrcName);
    ReportEventA(hEventLog, EVENTLOG_ERROR_TYPE, 0, 0, NULL, 1, 0, &message, NULL);
    DeregisterEventSource(hEventLog);
}

void main() {
	writeToEventLog("test", "This is test message");
}

PS C:\sources\d-journals> dub
    Starting Performing "debug" build using C:\D\dmd2\windows\bin64\dmd.exe for x86_64.
    Building d-journals ~master: building configuration [application]
     Linking d-journals
lld-link: error: undefined symbol: RegisterEventSourceA
>>> referenced by C:\sources\d-journals\source\app.d:4
>>>               C:\Users\alexander\AppData\Local\dub\cache\d-journals\~master\build\application-debug-windows-x86_64-dmd_v2.102.0-dirty-92393AAC9FC80DD3A486D7D072118EACA853FFECDE2EEAA8920EDA92F0620E60\d-journals.obj:(_D3app15writeToEventLogFPxaQdZv)

lld-link: error: undefined symbol: ReportEventA
>>> referenced by C:\sources\d-journals\source\app.d:5
>>>               C:\Users\alexander\AppData\Local\dub\cache\d-journals\~master\build\application-debug-windows-x86_64-dmd_v2.102.0-dirty-92393AAC9FC80DD3A486D7D072118EACA853FFECDE2EEAA8920EDA92F0620E60\d-journals.obj:(_D3app15writeToEventLogFPxaQdZv)

lld-link: error: undefined symbol: DeregisterEventSource
>>> referenced by C:\sources\d-journals\source\app.d:6
>>>               C:\Users\alexander\AppData\Local\dub\cache\d-journals\~master\build\application-debug-windows-x86_64-dmd_v2.102.0-dirty-92393AAC9FC80DD3A486D7D072118EACA853FFECDE2EEAA8920EDA92F0620E60\d-journals.obj:(_D3app15writeToEventLogFPxaQdZv)
Error: linker exited with status 1
Error C:\D\dmd2\windows\bin64\dmd.exe failed with exit code 1.

What could I have missed?

Sounds like a simple case of not linking against the right library: https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-reporteventa Library Advapi32.lib DLL Advapi32.dll Should be as simple as adding advapi32 to your libs directive.

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