Tracking: Zebra can replace zcashd

[mpguerra]

Motivation

There are not going to be any new major updates made to zcashd by ECC engineers, as such, we need to ensure that zebra can act as a suitable replacement for zcashd for all existing usecases.

This issue tracks progress towards this goal

Scope

• Tracking: Add regtest network #7119
  • add(docs): Describe custom testnets and their difference from Regtest #8588
• Zcashd built-in wallet replacement
  • Add a column family to zebra-state tracking [spent Outpoint] -> [transaction::Hash that spent the output] #8837
  • Add hashes of transactions that reveal a nullifier in the {sprout, sapling, orchard}_nullifiers column families as values #8838
  • Tracking: Add an indexer/caching service #8610
    • Add a tonic RPC server to zebra-rpc with a read state service #8618
    • Add a chain_tip_change() RPC method for listening to chain tip changes #8619
    • Add a mempool_transactions() RPC method for listening to changes in the mempool #8620
    • Copy Zebra RPC methods that provide required information to the tonic/indexer RPC server #8622
    • Add a zebra-indexer binary crate that starts a read state with a syncer from the sync module in zebra-rpc and starts a tonic RPC server #8623
    • Use the new RPC methods to track changes to the mempool in zebra-indexer #8628
  • Tracking: Enable zebra-scan to run as a separate independent process from zebrad #8573
    • Add an init function for a standalone ReadStateService #8520
    • Remove scanner starting from zebrad #8582
    • change(scan): Move integration tests for scanner out of zebrad #8593
    • Documentation changes for the new zebra-scanner binary #8586
    • Testing the new zebra-scanner binary #8585
    • Create a new binary zebra-scanner #8581
    • Add a current_tip() or similar to ReadState #8580
    • Add a function for syncing blocks from Zebra's non-finalized best chain to a ReadStateService in another process #8576
    • Use sync::init_read_state_with_syncer() in the zebra-scanner #8633
• Tracking: Block Explorer support #8435
  • Implement getblockhashes RPC method #8436
  • Implement getmempoolinfo RPC method #8437
  • Implement getnetworksolps RPC method #8438
  • Implement getpeerinfo RPC method #8439
  • Implement getaddressdeltas RPC method #8440
  • Implement z_listunifiedreceivers RPC method #8441
  • Implement getblockheader RPC method #8442
  • Implement z_validatepaymentdisclosure RPC method #8443
  • Implement validateaddress RPC method #8444
  • Implement z_validateaddress RPC method #8445
  • Update getblock RPC method #8446
  • Update getrawmempool RPC method #8447
  • Update getinfo RPC method #8448
  • Update getblockchaininfo RPC method #8449
  • Update getpeerinfo RPC method #8450
  • Update getrawtransaction RPC method #8451
  • Update getaddressbalance RPC method #8452
  • Install and run Zcash Block Explorer locally for testing purposes #8456
• Tracking: Support invalidating and reconsidering blocks in the NonFinalizedState via RPC methods #8634
  • Add a field to the NonFinalizedState for invalidated blocks #8840
  • Add an invalidate_block() method to the NonFinalizedState for removing a block and its descendents #8841
  • Add an reconsider_block() method to the NonFinalizedState for validating/committing a previously invalidated block and its invalidated descendents #8842
  • Accept a new channel in (or refactor the existing channels into a single channel where the message type is an enum) #8843
  • Call the new NonFinalizedState methods when the block write task receives a message to invalidate or reconsider a block #8844
  • Add a InvalidateBlock StateService Request variant which sends a message to the block write task #8845
  • Add a ReconsiderBlock StateService Request variant which sends a message to the block write task #8846
  • Add an invalidate() RPC method #8847
  • Add a reconsiderblock() RPC method #8848
• Tracking: run zcashd RPC tests #8781
  • Copy zcashd RPC tests and document how to run them #8779
  • Implement generate RPC method #8834
  • Implement stop RPC method #8836
• Tracking: Hardware Wallet Providers Support #8685
  • Enumerate the RPCs Trezor uses in their infra #8683
  • Enumerate the RPCs Ledger uses in their infra #8684