hazelcast-golang-client
Originally a fork of: https://github.com/hasancelik/hazelcast-go-client and extended allowing interaction with Hazelcast Queues
No dependencies on other projects - core golang only
Developed and tested against: Hazelcast 3.9 http://docs.hazelcast.org/docs/rn/3.9.html
With the help of:
- https://github.com/hazelcast/hazelcast-client-protocol/raw/v1.2.0/docs/published/protocol/1.2.0/HazelcastOpenBinaryClientProtocol-1.2.0.pdf
- http://docs.hazelcast.org/docs/ClientProtocolImplementationGuide-Version1.0-Final.pdf
- A debugger and the java client source ;-)
What's missing, what needs improvement?
- There is a lot missing! This is a very narrow implementation allowing us to interact with Queues only.
- Map, MultiMap, Topic, List, Set, Lock, Condition, ExecutorService, AtomicLong, AtomicReference, CountdownLatch, Semaphore, ReplicatedMap. MapReduce, TransactionalMap, TransactionalMultimap, TransactionalSet, TransactionalList, TransactionalQueue, Cache, XATransactional, Transactional, EnterpriseMap, RingBuffer and DurableExecutor are NOT currently supported!
- Timeouts and Retry - currently not supported. Need to add a common protocol retry mechanism
- Split response messages - messages split into multiples using the BEGIN/END flags are not supported.
- Currently all requests are sent in a single message with BEGIN/END flag set.
- All responses are assumed to be consumed in a single message read.
- This is a 'Dummy' client not a 'Smart' client. We'd need a higher level node connection manager to monitor cluster membership and build connections as required before we can call this a smart client.
- Error Handling - can always do with improvement!