tomasz.sowa/winix
1
0
Fork 0
Code Issues 5 Pull Requests Releases Activity

allow to specify how many times we can try to connect to the database at startup

Browse Source 
add config options:
db_startup_connection_max_attempts - default 0 (infinite)
db_startup_connection_attempt_delay - delay in seconds between attempts (default 5)

BREAKING CHANGE: WINIX_PLUGIN_INIT plugin message requires to set result status,
you have to set the result status to true (env.res) if your
plugin was initialized correctly, otherwise winix will not start
This commit is contained in:
Tomasz Sowa
2022-04-29 06:17:16 +02:00
parent c6c50a5d23
commit da2dec447b
18 changed files with 154 additions and 41 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
winixd/db/dbconn.cpp
View File

@@ -130,26 +130,63 @@ void DbConn::Connect()
}
void DbConn::LogNoConnection(size_t attempts)
{
log << log2 << "Db: connection to the database cannot be established";
log << ", (" << attempts << " attempt(s))" << logend;
log << logsave;
}
void DbConn::LogConnectionSocket()
{
log << log2 << "Db: connection to the database works fine" << logend;
log << log3 << "Db: connection socket: " << PQsocket(pg_conn) << logend;
log << logsave;
}
void DbConn::WaitForConnection()
bool DbConn::WaitForConnection(size_t attempts_max, size_t attempt_delay)
{
size_t attempts = 0;
bool attempts_exceeded = false;
if( attempt_delay == 0 )
attempt_delay = 1;
if( attempt_delay > 120 )
attempt_delay = 120;
if( !pg_conn || PQstatus(pg_conn) != CONNECTION_OK )
{
log << log3 << "Db: waiting for the db to be ready...." << logend << logsave;
while( !AssertConnection(false, false) )
sleep(5);
while( !attempts_exceeded && !AssertConnection(false, false) )
{
if( attempts_max != 0 )
{
attempts += 1;
attempts_exceeded = (attempts >= attempts_max);
}
if( !attempts_exceeded )
{
sleep(attempt_delay);
}
}
}
if( attempts_exceeded )
{
LogNoConnection(attempts);
}
else
{
LogConnectionSocket();
}
return !attempts_exceeded;
}