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Refactor Cache merging and writing

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Instead of having a large blob of cache merging code in TopUp, refactor
this into DescriptorCache so that it can merge and provide a diff
(another DescriptorCache containing just the items that were added).
Then TopUp can just write everything that was in the diff.
This commit is contained in:
Andrew Chow
2021-04-22 13:12:33 -04:00
parent 976b53b085
commit 0b4c8ef75c
3 changed files with 39 additions and 19 deletions
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23
src/wallet/scriptpubkeyman.cpp
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@@ -1805,33 +1805,18 @@ bool DescriptorScriptPubKeyMan::TopUp(unsigned int size)
}
m_map_pubkeys[pubkey] = i;
}
// Write the cache
for (const auto& parent_xpub_pair : temp_cache.GetCachedParentExtPubKeys()) {
CExtPubKey xpub;
if (m_wallet_descriptor.cache.GetCachedParentExtPubKey(parent_xpub_pair.first, xpub)) {
if (xpub != parent_xpub_pair.second) {
throw std::runtime_error(std::string(__func__) + ": New cached parent xpub does not match already cached parent xpub");
}
continue;
}
// Merge and write the cache
DescriptorCache new_items = m_wallet_descriptor.cache.MergeAndDiff(temp_cache);
for (const auto& parent_xpub_pair : new_items.GetCachedParentExtPubKeys()) {
if (!batch.WriteDescriptorParentCache(parent_xpub_pair.second, id, parent_xpub_pair.first)) {
throw std::runtime_error(std::string(__func__) + ": writing cache item failed");
}
m_wallet_descriptor.cache.CacheParentExtPubKey(parent_xpub_pair.first, parent_xpub_pair.second);
}
for (const auto& derived_xpub_map_pair : temp_cache.GetCachedDerivedExtPubKeys()) {
for (const auto& derived_xpub_map_pair : new_items.GetCachedDerivedExtPubKeys()) {
for (const auto& derived_xpub_pair : derived_xpub_map_pair.second) {
CExtPubKey xpub;
if (m_wallet_descriptor.cache.GetCachedDerivedExtPubKey(derived_xpub_map_pair.first, derived_xpub_pair.first, xpub)) {
if (xpub != derived_xpub_pair.second) {
throw std::runtime_error(std::string(__func__) + ": New cached derived xpub does not match already cached derived xpub");
}
continue;
}
if (!batch.WriteDescriptorDerivedCache(derived_xpub_pair.second, id, derived_xpub_map_pair.first, derived_xpub_pair.first)) {
throw std::runtime_error(std::string(__func__) + ": writing cache item failed");
}
m_wallet_descriptor.cache.CacheDerivedExtPubKey(derived_xpub_map_pair.first, derived_xpub_pair.first, derived_xpub_pair.second);
}
}
m_max_cached_index++;