custom restful service using jetty server on top of ignite grid to perform crud operations and configure cache store

[siva <si...@bizruntime.com>]

Hi,


we need to implement a rest service which have to perform all the crud
operations on ignite grid and as well as configure the cache store to
persist the data in RDBMS.

As per  following link,

http://apache-ignite-users.70518.x6.nabble.com/WebServer-on-Ignite-td314.html  


i have created a service and started the jetty server in init method,here
how i can to get the ignite instance to perform the operations on ignite
grid.  Is this correct way or any other way is there?

following is the code snippet

@Path("/service/test")
public class InmemoryService implements Service {


@IgniteInstanceResource
	private Ignite ignite;
	private IgniteCache<String, String> cache;

@GET
	@Path("/create")
	public String create(@QueryParam("tenantId")String tenantId,
@QueryParam("key") String key, @QueryParam("value") String value) {
		
		String result = "SUCCESS";
		
		try {
			System.out.println("Inside create ");
			cache = createOrGetCache(tenantId, CacheAtomicityMode.ATOMIC);
			cache.put(key, value);
			
		} catch (Exception e) {
			return e.getMessage();
		}
		return result;

	}
@Override
	public void init(ServiceContext ctx) throws Exception {
		// TODO Auto-generated method stub
			
			
			
			 ServletContextHandler context = new
ServletContextHandler(ServletContextHandler.NO_SESSIONS);
			    context.setContextPath("/");

			    Server jettyServer = new Server(9999);
			    jettyServer.setHandler(context);

			    ServletHolder jerseyServlet =
context.addServlet(ServletContainer.class, "/*");
			    jerseyServlet.setInitOrder(0);

			    // Tells the Jersey Servlet which REST service/class to load.
			   
jerseyServlet.setInitParameter("jersey.config.server.provider.packages","com.v2r.service");

			    try {
			       jettyServer.start();
			       jettyServer.join();
			      } catch (Exception e) {
			       e.printStackTrace();
			    } 
	}

}


	
Thanks









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Re: custom restful service using jetty server on top of ignite grid to perform crud operations and configure cache store

[dkarachentsev <dk...@gridgain.com>]

Hi,

In your code Ignite could not inject it's instance, because you have two
instances of your class: one in Ignite as a service, another one is object
that processes requests in Jersey. So when you're doing http query, it goes
to jersey instance.

How do you start Ignite? You may get ignite with Ignition.ignite().

Thanks!
-Dmitry



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Re: custom restful service using jetty server on top of ignite grid to perform crud operations and configure cache store

[siva <si...@bizruntime.com>]

when i am calling using rest ,each time new instance is creating and not able
to getting the ignite instance using the @IgniteInstanceResource annotation.
could you please help how to get the ignite instance in our scenario.How
ignite http module has been implemented using jetty server.



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Re: custom restful service using jetty server on top of ignite grid to perform crud operations and configure cache store

[siva <si...@bizruntime.com>]

Is this the correct way to  create a jetty rest server   in ignite  service?  



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Re: custom restful service using jetty server on top of ignite grid to perform crud operations and configure cache store

[siva <si...@bizruntime.com>]

Hi,

Yes,I have also used "*IgniteInstanceResource"*  in code to get the
instance,as per my code snippet ,when i call the "*create*" method  using
*proxy *its working fine ,but when i call the same method using my custom
rest "*ignite*" instance getting null.
	



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Re: custom restful service using jetty server on top of ignite grid to perform crud operations and configure cache store

[dkarachentsev <dk...@gridgain.com>]

Hi,

@IgniteInstanceResource annotation is a correct and the best way to get
Ignite instance in service.

Thanks!



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