hazelcast-go-client
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hazelcast
GetDistributedObject Functionality missing
Go version: go version go1.10.1 darwin/amd64 Hazelcast Go Client version: master Hazelcast server version: 3.10 Number of the clients: 1 Cluster size, i.e. the number of Hazelcast cluster members: 1 OS version : OSX
Expected behaviour Non null response on client.GetDistributedObject(string, string) where a remote service is deployed.
Actual behaviour returns null, null. Looks like ProxyManager only allows GetDistributedObject on built-in hz services - I think I'm ending up at the return nil, nil statement at end of method ProxyManager.getProxyByNameSpace.
Steps to reproduce the behaviour Get the hazelcast-code-samples master for Java. under project 'spi/proxy', start Member.java and put a breakpoint after hazelcast instances started and initialized.
Create go code main with: func main() { clientConfig := hazelcast.NewConfig() clientConfig.NetworkConfig().AddAddress("127.0.0.1:5701") client, err := hazelcast.NewClientWithConfig(clientConfig) name := "0counter" serviceName := "CounterService" mp, err := client.GetDistributedObject(serviceName, name) ... here mp and err come back as null. However - over in the console for java proxy project I can see that the method CounterService.createDistributedObject is actually executed successfully which is cool (I added a print stmt there). Just doesn't return the object.
I realize this client is pretty new - I either need something like this where I can plug in a java RemoteService, OR if you completed the SearchPredicate implementation for paging/searching/sorting, I could use that. This RemoteService POC was hoping to work around the problem with golang hazelcast client not being able to page/sort.
We currently dont have this feature in golang client, which means you can't register your proxy factories to golang client but it should return an error in this case, so I will make sure it returns an error instead of nil, nil.
As for predicates we currently have these built in predicates: https://github.com/hazelcast/hazelcast-go-client/blob/master/core/predicate/predicates.go
For sake of planning/documentation or others having similar issues - can you provide some sort of unofficial target timeframe/roadmap for supporting custom RemoteServices, and paging/sorting predicates?
Also - You have any other suggestions for how I might do this? Objective is to perform a search on very large dataset in hazelcast map, and return a specified page as opposed to the entire map? I can't think of any solution that doesn't require an additional application in Java that does the work outside and then puts it on a queue or something. Many reasons not to do it this way though.
Hi @djchapm 👋 I'm now monitoring this type of requests closely. Just added the GetDistributedObject support to our backlog. I believe we can ship it in the first half of the year. Thanks!
