Iterator<Pair<Q, E> > com.griddynamics.jagger.invoker.RoundRobinLoadBalancer< Q, E >.provide

(

)

Returns an iterator over pairs.

Author

Mairbek Khadikov

Details:

Returns an iterator over pairs, which were created by Round-Robin algorithm

Returns

iterator over pairs

Implements com.griddynamics.jagger.invoker.LoadBalancer< Q, E >.

Definition at line 58 of file RoundRobinLoadBalancer.java.

                                          {
        final CircularSupplier<Q> querySupplier = CircularSupplier.create(queryProvider);
        final CircularSupplier<E> endpointSupplier = CircularSupplier.create(endpointProvider);

        return new Iterator<Pair<Q, E>>() {
            @Override
            public boolean hasNext() {
                return true;
            }

            @Override
            public Pair<Q, E> next() {
                E endpoint = endpointSupplier.pop();
                Q query = querySupplier.pop();
                return Pair.of(query, endpoint);
            }

            @Override
            public void remove() {
                throw new UnsupportedOperationException("Read only iterator");
            }

            @Override
            public String toString() {
                return "RoundRobinLoadBalancer iterator";
            }
        };
    }