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Date: Mon, 3 Feb 2014 05:52:38 -0800 (PST)
From: Scott Weber <scotty2541@sbcglobal.net>
Reply-To: Scott Weber <scotty2541@sbcglobal.net>
Subject: Re: Cannot get os_daemon api to function
To: "user@couchdb.apache.org" <user@couchdb.apache.org>
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 <CAJ_m3YCMoG7keAbvdnmEoiqDRWSzs2sqyGcPKDqqsAhDcqPkpg@mail.gmail.com>
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Yes, it was buffering. That got me closer.=C2=A0 Thanks.=C2=A0 =0A=0ANow I =
get an 'Invalid Log Message' when I try to log.=C2=A0 My log message is exa=
ctly:=0A["log",{"log" : "The process started"}]=0A=0A=C2=A0=C2=A0=C2=A0 ( w=
hich I coded as strcpy(buffer,"[\"log\",{\"log\" : \"The process started\"}=
]\n");=C2=A0 )=0A=0ABecause the doc says the message must be a JSON.=C2=A0 =
As shown below:=0A---------------------------------------------------------=
-------=0A=0A7.3.2. Logging API=0AThere=E2=80=99s also an API for adding me=
ssages to CouchDB=E2=80=99s logs. Its simply:=0A["log", $MESG]\n=0AWhere $M=
ESG is any arbitrary JSON. There is no response from this command. As=0Awit=
h the config API, the trailing \n represents a newline byte.---------------=
--------------------------------------------------=0AThe error that is repo=
rted is:=0A=0A-------------------------------------------------------------=
=0A[info] [<0.36.0>] Apache CouchDB has started on http://0.0.0.0:5984/=0A[=
error] [<0.139.0>] Invalid log message from daemon "my_test": {[{<<"log">>,=
=0A=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 <<"The process started">>}]}=0A-------------------------=
------------------------------------=0A=0A=0AAny idea what it is really exp=
ecting?=0A=0A-Scott=0A=0A=0A=0A________________________________=0A From: Pa=
ul Davis <paul.joseph.davis@gmail.com>=0ATo: "user@couchdb.apache.org" <use=
r@couchdb.apache.org>; Scott Weber <scotty2541@sbcglobal.net> =0ASent: Mond=
ay, February 3, 2014 12:21 AM=0ASubject: Re: Cannot get os_daemon api to fu=
nction=0A =0A=0AI reckon your stdout is buffered. Try adding an fflush call=
 after the=0Asecond fputs.=0A=0AOn Sat, Feb 1, 2014 at 11:40 PM, Scott Webe=
r <scotty2541@sbcglobal.net> wrote:=0A> I am using version 1.5.=C2=A0 I can=
 get the daemon to start, but there does not appear to be any communication=
 on stdin/stdout.=0A>=0A> Below are my settings, and a simple C example. I =
would expect this simple code to log a message, then give me a reply of the=
 config settings. However nothing happens.=0A>=0A> Couch does restart the d=
aemon if I change a config setting under [os_daemons].=C2=A0 And the settin=
gs do appear in the config page of Futon.=0A>=0A> The example program does =
also exit when Couch closes the stdin connection, as expected.=0A>=0A>=0A> =
Any advice is appreciated.=0A>=0A> -Scott=0A>=0A>=0A> CONFIG SETTINGS:=0A> =
[log]=0A> level =3D info=0A>=0A> [os_daemons]=0A>=0A> my_test =3D c:/path/n=
ativeDaemon/debug/NativeDaemon.exe=0A>=0A> [my_test]=0A> Value =3D 10,002=
=0A> OtherValue =3D The other value=0A>=0A>=0A>=0A> Actual C code=C2=A0 (us=
es Windows Sleep, otherwise is agnostic) :=0A>=0A>=0A> int main() {=0A>=C2=
=A0 =C2=A0  char buffer[257];=0A>=0A>=C2=A0 =C2=A0  LogMessage("\nSTART:", =
"Daemon Startup");=C2=A0 //=C2=A0 My own log file to disk=0A>=C2=A0 =C2=A0 =
 Sleep(3000);=0A>=0A>=C2=A0 =C2=A0  fputs("[\"log\",{\"log\" : \"The proces=
s started\"}]\n",stdout);=0A>=C2=A0 =C2=A0  fputs("[\"get\", \"os_daemons\"=
]\n",stdout);=0A>=0A>=C2=A0 =C2=A0  do {=0A>=C2=A0 =C2=A0 =C2=A0 =C2=A0  fg=
ets(buffer,256,stdin);=0A>=C2=A0 =C2=A0 =C2=A0 =C2=A0  if (feof(stdin)) {=
=0A>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0  LogMessage("\nCLOSE:","Close=
d STDIN"); //=C2=A0 This does exit when expected=0A>=C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0  break;=0A>=C2=A0 =C2=A0 =C2=A0 =C2=A0  }=0A>=0A>=0A> =
// etc... into loop.
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