In the previous commit, we modified our BitcoindClient struct to use a
ConcurrentQueue struct to handle its notifications to the caller. Before
this, the BitcoindClient had a goroutine that would handle these
notifications in the background and detect when a OnBlockConnected
notification was received in order to update the best block. Due to this
logic being removed, we now keep track of the best block througout the
struct as a whole.
In this commit, we update bitcoind to also accept a mapping from
outpoint to address for its implementation of the recan RPC. We do this
as in the near future, when bitcoind implements BIP 158 indexing, then
we'll be able to utilize that to do rescans.
In this commit, we fix a recently introduced bug that would cause
callers that attempted to get a spend notifications for a particular
outpoint to no longer get that precise notification. In a prior commit,
in preparation for the new neutrino gcs filter format, we added a
mapping from script to outpoint that will be used by neutrino, and later
other backends as well. However, we still need to match on outpoint
slices for bitcoind today.
In this commit, we update the Rescan call in the interface to map the
outpoint to the address that the outpoint holds. We do this as BIP 158
has recently been updated to match on the prev output script rather than
the outpoint itself. Additionally, in the near future, btcd (then
bitcoind), will switch over to using the BIP 158 filters internally,
which will also match on the output scripts.
In this commit, we modify the way we store spending transaction hashes
for unconfirmed spends. Now, rather than only keeping track of one
possible unconfirmed spend, we track multiple in order to ensure we
properly handle transaction replacements, like in the case of RBF,
double spends, etc. With this in, the double spent tests recently added
should now pass.
In this commit, we slightly refactor the existing moveMinedTx method
and split it into two: deleteUnminedTx and updateMinedBalance. We do
this as moveMinedTx is no longer moving the transaction from the unmined
bucket to the mined, instead it just removes it from the unmined bucket.
In this commit, we remove most of the common code between insertMinedTx
and moveMinedTx. Now, all the common logic is handled within
insertMinedTx, and moveMinedTx only contains its unique logic.
In this commit, we add a set of double spend tests to ensure that we can
properly detect and handle them. At this point, we do not do this, but a
follow up commit will address this.
