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Merge pull request #49 from buffrr/v0.0.5-updates
v0.0.5 updates
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,133 @@ | ||
| use std::collections::{BTreeMap}; | ||
| use anyhow::anyhow; | ||
| use protocol::bitcoin::{OutPoint, Transaction}; | ||
| use protocol::hasher::{KeyHasher, SpaceKey}; | ||
| use protocol::prepare::{DataSource, TxContext}; | ||
| use protocol::{Covenant, RevokeReason, SpaceOut}; | ||
| use protocol::validate::{TxChangeSet, UpdateKind, Validator}; | ||
| use crate::store::{LiveSnapshot, Sha256}; | ||
|
|
||
| pub struct TxChecker<'a> { | ||
| pub original: &'a mut LiveSnapshot, | ||
| pub spaces: BTreeMap<SpaceKey, Option<OutPoint>>, | ||
| pub spaceouts: BTreeMap<OutPoint, Option<SpaceOut>>, | ||
| } | ||
|
|
||
| impl<'a> TxChecker<'a> { | ||
| pub fn new(snap: &'a mut LiveSnapshot) -> Self { | ||
| Self { | ||
| original: snap, | ||
| spaces: Default::default(), | ||
| spaceouts: Default::default(), | ||
| } | ||
| } | ||
|
|
||
| pub fn apply_package(&mut self, height: u32, txs: Vec<Transaction>) -> anyhow::Result<Vec<Option<TxChangeSet>>> { | ||
| let mut sets = Vec::with_capacity(txs.len()); | ||
| for tx in txs { | ||
| sets.push(self.apply_tx(height, &tx)?); | ||
| } | ||
| Ok(sets) | ||
| } | ||
|
|
||
| pub fn check_apply_tx(&mut self, height: u32, tx: &Transaction) -> anyhow::Result<Option<TxChangeSet>> { | ||
| let changeset = self.apply_tx(height, tx)?; | ||
| if let Some(changeset) = changeset.as_ref() { | ||
| Self::check(&changeset)?; | ||
| } | ||
| Ok(changeset) | ||
| } | ||
|
|
||
| pub fn apply_tx(&mut self, height: u32, tx: &Transaction) -> anyhow::Result<Option<TxChangeSet>> { | ||
| let ctx = | ||
| match { TxContext::from_tx::<Self, Sha256>(self, tx)? } { | ||
| None => return Ok(None), | ||
| Some(ctx) => ctx, | ||
| }; | ||
| let validator = Validator::new(); | ||
| let changeset = validator.process(height, tx, ctx); | ||
| let changeset2 = changeset.clone(); | ||
|
|
||
| let txid = tx.compute_txid(); | ||
| for spend in changeset.spends { | ||
| let outpoint = tx.input[spend.n].previous_output; | ||
| self.spaceouts.insert(outpoint, None); | ||
| } | ||
| for create in changeset.creates { | ||
| let outpoint = OutPoint { | ||
| txid, | ||
| vout: create.n as _, | ||
| }; | ||
| if create.space.is_some() { | ||
| let space = SpaceKey::from(Sha256::hash( | ||
| create.space.as_ref().expect("space").name.as_ref()) | ||
| ); | ||
| self.spaces.insert(space, Some(outpoint)); | ||
| } | ||
| self.spaceouts.insert(outpoint, Some(create)); | ||
| } | ||
| for update in changeset.updates { | ||
| let space = SpaceKey::from( | ||
| Sha256::hash(update.output.spaceout.space.as_ref() | ||
| .expect("space").name.as_ref())); | ||
| match update.kind { | ||
| UpdateKind::Revoke(_) => { | ||
| self.spaces.insert(space, None); | ||
| self.spaceouts.insert(update.output.outpoint(), None); | ||
| } | ||
| _ => { | ||
| let outpoint = update.output.outpoint(); | ||
| self.spaces.insert(space, Some(outpoint)); | ||
| self.spaceouts.insert(outpoint, Some(update.output.spaceout)); | ||
| } | ||
| } | ||
| } | ||
| Ok(Some(changeset2)) | ||
| } | ||
|
|
||
| pub fn check(changset: &TxChangeSet) -> anyhow::Result<()> { | ||
| if changset.spends.iter().any(|spend| spend.script_error.is_some()) { | ||
| return Err(anyhow!("tx-check: transaction not broadcasted as it may have an open that will be rejected")); | ||
| } | ||
| for create in changset.creates.iter() { | ||
| if let Some(space) = create.space.as_ref() { | ||
| match space.covenant { | ||
| Covenant::Reserved => { | ||
| return Err(anyhow!("tx-check: transaction not broadcasted as it may cause spaces to use a reserved covenant")) | ||
| } | ||
| _ => {} | ||
| } | ||
| } | ||
| } | ||
| for update in changset.updates.iter() { | ||
| match update.kind { | ||
| UpdateKind::Revoke(kind) => { | ||
| match kind { | ||
| RevokeReason::Expired => {} | ||
| _ => { | ||
| return Err(anyhow!("tx-check: transaction not broadcasted as it may cause a space to be revoked (code: {:?})", kind)) | ||
| } | ||
| } | ||
| } | ||
| _ => {} | ||
| } | ||
| } | ||
| Ok(()) | ||
| } | ||
| } | ||
|
|
||
| impl DataSource for TxChecker<'_> { | ||
| fn get_space_outpoint(&mut self, space_hash: &SpaceKey) -> protocol::errors::Result<Option<OutPoint>> { | ||
| match self.spaces.get(space_hash) { | ||
| None => self.original.get_space_outpoint(space_hash.into()), | ||
| Some(res) => Ok(res.clone()) | ||
| } | ||
| } | ||
|
|
||
| fn get_spaceout(&mut self, outpoint: &OutPoint) -> protocol::errors::Result<Option<SpaceOut>> { | ||
| match self.spaceouts.get(outpoint) { | ||
| None => self.original.get_spaceout(outpoint), | ||
| Some(space_out) => Ok(space_out.clone()) | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
|
|
@@ -11,3 +11,4 @@ pub mod source; | |
| pub mod store; | ||
| pub mod sync; | ||
| pub mod wallets; | ||
| mod checker; | ||
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