View Watch Dog
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Watch Dog
Watch dog
A background process has been added to watch for "hung" processes. If the watch dog detects a "hung" process it can automatically restart the Bridge.
There are 3 general areas the watch dog checks:
1. General polling functions:
Import of files via FTP download
HTTP actions ([ACTIONS])
Flight View
2. File based reservation import:
Import of files via import directory
3. EXI functions:
Socket based immediate reservation import
EXI connect
EXI disconnect
EXI VRAS
EXI RECON
EXI Send Confirmation
Watch dog configuration:
[WATCHDOG]
POLLERENABLE=n, default=0
This value enable or disables the watch dog.
0 - disable
1 - enable
SCANDELAY=n, default = 10 seconds
exithread_restart=n, default=0
importthread_restart=n, default=0
pollerthread_restart=n, default=0
This value indicates whether each process should force a restart.
0 - restart disabled
1 - restart enabled
exithread_timeout=10, default = 10 minutes
pollerthread_timeout=10, default = 10 minutes
importthread_timeout=10, default = 10 minutes
This value is the number of minutes of no activity that will indicate a process is hung.
General restart configuration:
An application command line must be configured as follows:
[POLLER]
APPCMDLINE=c:\Bridge\hwebbridge.exe /c:\Bridge\bridge.ini
LISTENDELAY=n, Default on auto restart = 10 seconds
This value is used to set a delay before listening on a socket. If the application has not completely shutdown before the new application is launched, the listen will fail.
When a restart is initiated an email is sent by default to alarmlist@hudsonltd.com. All email settings except recipient are loaded from resfc.
Email settings can be overridden as follows:
SMTPDEF=alarmlist@hudsonltd.com
This value is the email recipient address SMTPHOST=www.emailhost.com SMTPSENDER=bridge@hudsonltd.com
SMTPUSER=username
SMTPPASSWORD=password
Sample INI setup:
[POLLER]
SCANDELAY=60
MACHINEID=MACHINE1
TITLE=BridgeTitle
UPLOADRESENABLE=0
FTPDOWNLOADENABLE=0
REQUESTLISTENABLE=0
MENUUTILITIESENABLE=0
FLIGHTVIEWENABLE=0
CFGSEMAPHORENAME=HWEBCFG-REPLACEME
EXIWAITSEM=5
EXIWAITIMPORT=3
EXIWAITSENDCONF=3
EXIWAITCONNECT=3
EXIWAITDISCONNECT=3
EXIWAITVRAS=3
EXIWAITCONDEXP=3
EXIWAITIMPORTFILE=5
APPCMDLINE=%REPLACEME-HWebDir%\HWebBridge.exe \\hudsonts\dfs\Hudson\REPLACEME\HWeb\HWEB.ini
LISTENDELAY=10
SMTPDEF=alarmlist@hudsonltd.com
SMTPHOST=smtp.hudsonltd.com
SMTPSENDER=watchdog@hudsonltd.com
SMTPUSER=watchdog@hudsonltd.com
SMTPPASSWORD=WatchDog21
RESTARTINFO=
[WATCHDOG]
POLLERENABLE=1
SCANDELAY=10
exithread_restart=1
importthread_restart=1
pollerthread_restart=1
exithread_timeout=10
importthread_timeout=10
pollerthread_timeout=10
Sample email:
Subject: Bridge message Auto restart
Company: "Company Name"
Thu Aug 30 09:12:58 2007
Title: DOWNLOAD HWEB Bridge title Machine: FLIGHTVIEW
App name: C:\pr_mfc\dbpoller\debug\HWebBridge.exe
INI file: c:\pr_mfc\dbpoller\Debug\ini_downbridge.ini
HWeb Bridge DEBUG Version 1.38 Aug 30 2007 08:50:59 Build 1
Auto restart initiated
Watch Dog Timeout importthread
Upload reservation
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Transmit the IDNumber reservation database field in the passenger id field of the reservation.