void PluginHooks::readConfig(OsConfigDb& configDb)
{
OsSysLog::add(FAC_KERNEL, PRI_DEBUG, "PluginHooks::readConfig" );
// Move any existing hooks from the current configured list to
// a temporary holding list.
UtlSList existingHooks;
UtlContainable* existingHook;
UtlSortedListIterator nextHook(mConfiguredHooks);
while (existingHook = nextHook())
{
existingHooks.append(mConfiguredHooks.removeReference(existingHook));
}
// the mConfiguredHooks list is now empty
// Walk the current configuration,
// any existing hook is moved back to the mConfiguredHooks list,
// newly configured hooks are added,
// each configured hook is called to read its own configuration.
UtlString hookPrefix(mPrefix);
hookPrefix.append(HOOK_LIB_PREFIX);
OsConfigDb allHooks;
OsSysLog::add(FAC_KERNEL, PRI_DEBUG,
"PluginHooks::readConfig looking up hooks '%s'",
hookPrefix.data()
);
if (OS_SUCCESS == configDb.getSubHash(hookPrefix, allHooks)) // any hooks configured for prefix?
{
UtlString lastHook;
UtlString hookName;
UtlString hookLibrary;
// walk each hook and attempt to load and configure it
for ( lastHook = "";
OS_SUCCESS == allHooks.getNext(lastHook, hookName, hookLibrary);
lastHook = hookName
)
{
ConfiguredHook* thisHook;
if (NULL == (thisHook = dynamic_cast<ConfiguredHook*>(existingHooks.remove(&hookName))))
{
// not an existing hook, so create a new one
OsSysLog::add(FAC_KERNEL, PRI_DEBUG,
"PluginHooks: loading '%s'", hookName.data()
);
thisHook = new ConfiguredHook(hookName, mFactory, hookLibrary);
}
// put the hook onto the list of active hooks
mConfiguredHooks.insert(thisHook);
// (re)configure the hook
thisHook->readConfig(mPrefix, configDb);
}
}
else
{
OsSysLog::add(FAC_KERNEL, PRI_INFO,
"PluginHooks: no '%s' hooks configured", mPrefix.data()
);
}
// discard any hooks that are no longer in the configuration
existingHooks.destroyAll();
}