Implement a Client::get_blockchain_info, or Client::get_prune_height that queries the bitcoind backend about the prune height. This lets the wallet know whether it can do a full-scan when the backend is pruned.
This will go in tandem with the Wallet Birthday PR: if the birthday is older than the prune height, it cannot do a conclusive full-scan.
This info can be processed from bitcoin-cli getblockchaininfo's pruned and pruneheight fields:
% bitcoin-cli getblockchaininfo
{
"chain": "main",
"blocks": 935810,
"headers": 935810,
"bestblockhash": "00000000000000000000770db1b26286178ed24a5896140204e555d60cba8659",
"bits": "17023c7e",
"target": "000000000000000000023c7e0000000000000000000000000000000000000000",
"difficulty": 125864590119494.3,
"time": 1770673620,
"mediantime": 1770669693,
"verificationprogress": 0.9805905826175929,
"initialblockdownload": true,
"chainwork": "00000000000000000000000000000000000000010ddf1d907ae41ee34e5bc9aa",
"size_on_disk": 5099746872,
+ "pruned": true,
+ "pruneheight": 933119,
"automatic_pruning": true,
"prune_target_size": 5242880000,
"warnings": [
]
}Then Client::get_prune_height can return an Option<u32>.
Implement a
Client::get_blockchain_info, orClient::get_prune_heightthat queries thebitcoindbackend about the prune height. This lets the wallet know whether it can do a full-scan when the backend is pruned.This will go in tandem with the Wallet Birthday PR: if the birthday is older than the prune height, it cannot do a conclusive full-scan.
This info can be processed from
bitcoin-cli getblockchaininfo'sprunedandpruneheightfields:% bitcoin-cli getblockchaininfo { "chain": "main", "blocks": 935810, "headers": 935810, "bestblockhash": "00000000000000000000770db1b26286178ed24a5896140204e555d60cba8659", "bits": "17023c7e", "target": "000000000000000000023c7e0000000000000000000000000000000000000000", "difficulty": 125864590119494.3, "time": 1770673620, "mediantime": 1770669693, "verificationprogress": 0.9805905826175929, "initialblockdownload": true, "chainwork": "00000000000000000000000000000000000000010ddf1d907ae41ee34e5bc9aa", "size_on_disk": 5099746872, + "pruned": true, + "pruneheight": 933119, "automatic_pruning": true, "prune_target_size": 5242880000, "warnings": [ ] }Then
Client::get_prune_heightcan return anOption<u32>.