notion of a global group (though we implicitly define one in InvocationCodes)
added a mechanism for directors (which generally handle the client side of
invocation services) to register their interest in bootstrap service groups so
that the whole goddamned complex business can happen magically behind the
scenes.
If you instantiate a director, it will automatically register interest in the
service group it needs and everything will work. If you don't use the director
code, you don't get the services and you can safely exclude all of that code
from your client even though the services are still in use on the server (and
presumably used by some other types of clients).
This is going to break all the builds, which I'll soon fix. Then I'll go write
all this in ActionScript. Yay!
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MetaSOY clients (Swiftly, World, and soon Admin Dashboard) don't have to know
about a bunch of unrelated crap. Fricking complexity++, grumble.
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There is no recent (~years) modification of this line, but at the same
time it appears that none of our products use the LocationProvider.moveBody()
method, so maybe this bug has just never been tickled.
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subinterfaces of InvocationProvider and forward requests to peer nodes
in order to use the same methods on owning peers and cloning peers.
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queue up an invoker unit which would go off and do some database stuff and then
by the time it came back and was ready to publish its results to a distributed
object, the object in question would have been destroyed for any of a variety
of fairly natural reasons (client disconnected or logged off, game was
abandoned, dog ate homework).
One "solution" to this problem would be to litter our games' code with
thousands of calls to isActive() in the handleResult() methods of our invoker
units. We've done a bit of that in Yohoho but I've resisted starting down that
path in our other games.
Another solution would be to create an Invoker.Unit wrapper that takes a
reference to the distributed object (or objects) that it will be modifying and
have the common unit code check that the object(s) in question are still alive
at the end of the asynchronous operation and not call handleResult() if they
are not. This has numerous problems: what do you do if one object is alive but
not another, how do you incorporate this functionality in with the numerous
other Invoker.Unit derivations we have that simplify our lives in other ways
(without getting crazy and starting to use something like AOP), do you silently
abort the operation or log something?
So instead, I've come around to the idea that this is simply a dirty fact of
life in asynchronous programming and the fact that we can accept modifications
to distributed state after the distribted object in question is dead is a good
thing. We used to log a warning every time this happened and freak out even
more substantially if one tried to start a transaction on a dead object. Now we
will simply log an informational message (I don't think this sort of thing
should be silently ignored because there are some cases where it is an
indication of incorrect code, those are simply more rare). We will also allow a
transaction to be started on a dead object and when the transaction is
committed, all the events involved will be dropped just like a single
modification would have been dropped on that object.
This allows the most sensible thing to happen which is any results that are
published to still live objects will actually be published and results
published to dead objects will be dropped without making a big fuss. Since a
dead object by definition cannot have subscribers, no one could possibly have
cared about the dropped events anyway.
Also widened.
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acquire and release locks, and to use handler objects to manage locks in
the process of resolution.
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exposes the need to write a Client that is optimized to act as a proxy instead
of just using the one that is designed to run on a user's machine. However,
this will be fine for now. Integration with PeerManager forthcoming.
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It was always a little special, since it's dispatched from the client, but
I want it to be handled like other messages so that we can recolor
different parts of the message as I do in metasoy.
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response constants start with E_ and their codes start with e..
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- Use -dynamiclib instead of -bundle as per Apple's recommendation
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(ByteArray is a special class for dealing with bytes. It does not extend
the normal Array).
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the client with the proper source oid. Normally this happens when the client's
event is received over the network but in local mode events never go over the
network and thus all appear to have originated on the "server".
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one another whether they've already displayed a chat message.
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an arbitrary Java class which we are converting to ActionScript (the language,
not the class). Hopefully this will appease the compiler.
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aren't magically in scope for ActionScript, we have to generate import
statements for them.
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Michael Bayne