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Re: [ecf-dev] local remote services
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Hi Wim,
Wim Jongman wrote:
Hi Scott,
Sounds great. What about the speed of a "local" remote sevice? Does it
bypass networking?
Correct...there is no networking in the 'local' provider. Actual remote
calls will be far speedier than the use of any network...although not
quite as speedy as a normal method call...because the local provider
does a reflective method lookup and then calls Method.invoke(...). See
this method/class if you want to see the actual code implementing this
lookup and reflective invocation.
org.eclipse.ecf.internal.provider.local.container.LocalRemoteServiceRegistry.callSynch(RemoteServiceRegistrationImpl,
IRemoteCall)
Your question prompted the following thought/idea though...perhaps this
provider could be enhanced to (optionally) introduce some random delay
in the method invocation...to simulate network behavior. This
would/could be very useful for testing the timing of things.
Scott
Regards,
Wim
On Jun 16, 2010, at 2:15, Scott Lewis <slewis@xxxxxxxxxxxxx> wrote:
Hi Folks,
In a fit of desire to work on something new this past weekend, I
implemented a new ECF remote services provider for inclusion in ECF 3.4.
This provider provides access to remote services *locally* (i.e.
within the same framework).
What is the purpose for a remote service provider that is
local-only? :) There are at least two purposes:
1) The ability to asynchronously access an OSGi service (i.e.
AsyncCallback, IFuture, IRemoteService) [1]
2) Testing of a remote service...without the necessarily messy steps
of network discovery, and distribution. This should facilitate
writing/running test code for remote services...without having to
have the discovery and distribution defined, deployed, configured on
a given network, etc.
This new provider project is located here:
host: dev.eclipse.org (extssh or pserver/anonymous access)
cvs path: /cvsroot/rt
module:
org.eclipse.ecf/providers/bundles/org.eclipse.ecf.provider.local
There's also an initial test project:
module:
org.eclipse.ecf/tests/bundles/org.eclipse.ecf.tests.provider.local
Scott
[1] http://wiki.eclipse.org/Asynchronous_Proxies_for_Remote_Services
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