[master] ZIL-5332-debug_accountRange

[lucac-zilliqa]

This pull request will add the functionality of debug_accountRange which will return a pagination style response of addresses in the network.

The idea is to implement a cache (an array) which will contain address hexes (still to be determined) which can then be indexed into a slice of the array returned (or also include the corresponding account information).

Potential Discussions:

• What data will be stored in the cache: hex address as a byte array (currently implemented) or a vector of bits, an Address reference or Account reference?
• How the data will be returned: return a series of hex addresses and have the client then make individual requests for the individual Account data or return the data associated with the address as well in the response of the debug_accountRange call?

[Steve-White-UK]

PrintAddressCache should probably lock the mutex as it may be possible for another thread to change the cache and invalidate the iterator, if there is only one thread then it possibly does not need a mutex.

[Steve-White-UK]

If you can add a test to the EvmAcceptanceTests we can take it on board and this test will be executed via ci.

Need to make sure it only looks for short durations and that it doesn't use excessive memory, apart from that it should be OK.

If you provide a test we will test it out as part of our current schedule.