96 lines
3.0 KiB
Rust
96 lines
3.0 KiB
Rust
use std::pin::Pin;
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use tower::ServiceExt;
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use super::{
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error::MempoolError, storage::Storage, ActiveState, InboundTxDownloads, Mempool, Request,
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};
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use crate::{
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components::sync::{RecentSyncLengths, SyncStatus},
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BoxError,
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};
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mod prop;
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mod vector;
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impl Mempool {
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/// Get the storage field of the mempool for testing purposes.
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pub fn storage(&mut self) -> &mut Storage {
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match &mut self.active_state {
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ActiveState::Disabled => panic!("mempool must be enabled"),
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ActiveState::Enabled { storage, .. } => storage,
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}
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}
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/// Get the transaction downloader of the mempool for testing purposes.
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pub fn tx_downloads(&self) -> &Pin<Box<InboundTxDownloads>> {
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match &self.active_state {
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ActiveState::Disabled => panic!("mempool must be enabled"),
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ActiveState::Enabled { tx_downloads, .. } => tx_downloads,
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}
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}
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/// Enable the mempool by pretending the synchronization is close to the tip.
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///
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/// Requires a chain tip action to enable the mempool before the future resolves.
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pub async fn enable(&mut self, recent_syncs: &mut RecentSyncLengths) {
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// Pretend we're close to tip
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SyncStatus::sync_close_to_tip(recent_syncs);
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// Make a dummy request to poll the mempool and make it enable itself
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self.dummy_call().await;
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}
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/// Disable the mempool by pretending the synchronization is far from the tip.
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pub async fn disable(&mut self, recent_syncs: &mut RecentSyncLengths) {
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// Pretend we're far from the tip
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SyncStatus::sync_far_from_tip(recent_syncs);
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// Make a dummy request to poll the mempool and make it disable itself
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self.dummy_call().await;
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}
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/// Perform a dummy service call so that `poll_ready` is called.
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pub async fn dummy_call(&mut self) {
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self.oneshot(Request::CheckForVerifiedTransactions)
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.await
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.expect("unexpected failure when checking for verified transactions");
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}
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}
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/// Helper trait to extract the [`MempoolError`] from a [`BoxError`].
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pub trait UnboxMempoolError {
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/// Extract and unbox the [`MempoolError`] stored inside `self`.
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///
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/// # Panics
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///
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/// If the `boxed_error` is not a boxed [`MempoolError`].
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fn unbox_mempool_error(self) -> MempoolError;
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}
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impl UnboxMempoolError for MempoolError {
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fn unbox_mempool_error(self) -> MempoolError {
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self
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}
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}
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impl UnboxMempoolError for BoxError {
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fn unbox_mempool_error(self) -> MempoolError {
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self.downcast::<MempoolError>()
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.expect("error is not an expected `MempoolError`")
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// TODO: use `Box::into_inner` when it becomes stabilized.
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.as_ref()
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.clone()
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}
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}
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impl<T, E> UnboxMempoolError for Result<T, E>
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where
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E: UnboxMempoolError,
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{
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fn unbox_mempool_error(self) -> MempoolError {
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match self {
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Ok(_) => panic!("expected a mempool error, but got a success instead"),
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Err(error) => error.unbox_mempool_error(),
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}
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}
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}
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