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$Id$
CIAO_Daemon:
============
This directory contains CIAO's per-host daemon process implementation
- CIAO_Daemon. It includes implementations for two major CCM
interfaces, namely, ComponentImplementation and ServerActivation.
ComponentInstallation interfaces must be available per-host so all
ComponentServer running on the same host can query it to acquire
component impolementations they need. Likewise, ServerActivator
interacts with CCM's Assembly framework and is responsible to start up
new ComponentServer processes on this host.
The Daemon process registers three simple ObjectKey, "CIAODaemon",
"ComponentInstallation", and "ServerActivator" to the IORTable, so if you
start up the CIAO_Daemon process on a fixed endpoint like:
CIAO_Daemon -ORBEndpoint iiop://hostname:13000
You can get to any of the three interfaces using one of the following
IOR:
corbaloc:iiop:hostname:13000/CIAODaemon
corbaloc:iiop:hostname:13000/ComponentInstallation
corbaloc:iiop:hostname:13000/ServerActivator
Other command line flags supported by ServerActivator include:
* -o <filename> : Specify the filename where CIAO_Daemon
writes the IOR of the Daemon interface to. By
default, it writes to "daemon.ior".
DaemonController uses the IOR to get the object
refrence to interact with the Daemon process.
* -n <pathname> : Specify the pathname to a ComponentServer
program that ServerActivator uses to
startup a ComponentServer process.
* -d <second> : Specify the time, in second, ServerActivator will
wait for the ComponentServer to callback to notify
ServerActivator their IOR. ServerActivator
considers the activation fails if the
ComponentServer does not call back in time.
* -i : Specify the name of the datafile ComponentInstallation
interface uses to keep the persistent installation data. By
default, CIAO_Daemon uses the file
"CIAO_Installation_Data.ini". This file (even if empty) must
exist before the process starts.
* -s : Specify the Section name within the persistent data file the
ComponentInstallation uses to retrieve and backup the
installation data. Changing this name allows us to switch
among various sets of component implementations easily just
by restarting the daemon process. By default, CIAO_Daemon
uses the name "ComponentInstallation" if this flag is not
specified.
DaemonController:
=================
This is a small command line utility program for interacting with the
CIAO_Daemon process. It offers two major function groups thru 6
commands:
* General daemon process control:
- get_ior: use this command to query the IOR of any service
interfaces running on the daemon process and store the IOR into
a specified file.
- shutdown: use this command to shutdown the daemon process.
* ComponentInstallation related control:
- install: to install a new location of a component
implementation
- uninstall: to remove a location of a component implementation
- replace: to replace an existing compoment implementaion
location with a new one
- query: to query the location of a component implementation
This program uses resolve_initial_references ("CIAODaemon") to acqurie
the daemon control interface, so you must provide the reference to the
program somehow. For example:
DaemonController -ORBInitRef CIAODaemon=file://daemon.ior <command> [command options]
To check the parameter required for each of the commands listed above,
just append the -h command option flag, such as:
DaemonController -ORBInitRef CIAODaemon=file://daemon.ior install -h
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