Re: [ecf-dev] tutorial idea: OSGi remote services for existing services

[Scott Lewis <slewis@xxxxxxxxxxxxx>]

I've created a new github repo for the Geonames Timezone example I've 
been working on.  The bundles so far are (in bundles directory):

1.  org.geonames.timezone - declares the Geonames timezone API as an 
OSGi service interface called ITimezoneService
2. org.eclipse.ecf.provider.geonames.timezone.client - An ECF Remote 
Services provider using the ECF Rest API and JSON parser to make the 
REST call and process the server's JSON response.

I've also begun the creation of two consumer bundles to test the above 
provider

3. org.eclipse.ecf.geonames.timezone.consumer - A very simple consumer 
which finds (via ServiceTracker)  ITimezoneService proxies and then 
calls the ITimezoneService.getTimezone/2 method on the added proxy.
4. org.eclipse.ecf.geonames.timezone.consumer.edef = A very simple EDEF 
bundle, containing the EDEF to discover the Geonames timezone service, 
with RSA then creating the ITimezoneService proxy.

Over the next week, I'm going to write a short tutorial that shows 
particularly the code in org.geonames.timezone (remote service API) and 
org.eclipse.ecf.provider.geonames.timezone.client (REST Client Remote 
Services ECF provider)

In testing this code unfortunately I discovered an oversight bug in the 
RestClientService class from the changeover from httpclient 3.3 to 4.X.  
See [2] for details.  To get this new example to work, this fix has to 
be in place in the runtime, meaning that we will need to produce 3.9.2 
release for people to be able to successfully run the timezone example 
themselves.  We can discuss the timing of 3.9.2 creation and release 
relative to other things that committers and contributors are currently 
working on.

If people have comments about any of this, would like to help/contribute 
on this example, or would like to suggest specific things to focus on 
for the wiki tutorial, please say so here, produce a pull request, or 
contact me directly to coordinate on the tutorial.

Thanks,

Scott

[1] https://github.com/ECF/Geonames
[2] https://bugs.eclipse.org/bugs/show_bug.cgi?id=453484