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use lifeline::Sender;
use microkv::namespace::NamespaceMicroKV;
use postage::broadcast;
use client_pangolin::client::PangolinClient;
use client_pangolin::component::PangolinClientComponent;
use client_pangolin::types::runtime_types::darwinia_bridge_ethereum::EthereumRelayHeaderParcel;
use shadow_liketh::component::ShadowComponent;
use shadow_liketh::shadow::Shadow;
use shadow_liketh::types::BridgeName;
use support_common::config::{Config, Names};
use crate::bridge::{Extrinsic, PangolinRopstenConfig, ToExtrinsicsMessage};
pub struct AffirmHandler {
microkv: NamespaceMicroKV,
sender_to_extrinsics: broadcast::Sender<ToExtrinsicsMessage>,
client: PangolinClient,
shadow: Shadow,
}
impl AffirmHandler {
pub async fn new(
microkv: NamespaceMicroKV,
sender_to_extrinsics: broadcast::Sender<ToExtrinsicsMessage>,
) -> Self {
loop {
match AffirmHandler::build(microkv.clone(), sender_to_extrinsics.clone()).await {
Ok(handler) => return handler,
Err(err) => {
tracing::error!(
target: "pangolin-ropsten",
"[ropsten] [affirm] [handle] Failed to init affirm handler. err: {:#?}",
err
);
tokio::time::sleep(std::time::Duration::from_secs(10)).await;
}
}
}
}
async fn build(
microkv: NamespaceMicroKV,
sender_to_extrinsics: broadcast::Sender<ToExtrinsicsMessage>,
) -> color_eyre::Result<Self> {
tracing::info!(target: "pangolin-ropsten", "SERVICE RESTARTING...");
let bridge_config: PangolinRopstenConfig = Config::restore(Names::BridgePangolinRopsten)?;
let client = PangolinClientComponent::component(bridge_config.darwinia).await?;
let shadow = ShadowComponent::component(
bridge_config.shadow,
bridge_config.ethereum,
bridge_config.web3,
BridgeName::PangolinRopsten,
)?;
tracing::info!(
target: "pangolin-ropsten",
"[ropsten] [affirm] [handle] ✨ SERVICE STARTED: ROPSTEN <> PANGOLIN RELAY"
);
Ok(AffirmHandler {
microkv,
sender_to_extrinsics,
client,
shadow,
})
}
}
impl AffirmHandler {
pub async fn affirm(&mut self) -> color_eyre::Result<()> {
let last_confirmed = self.client.ethereum().last_confirmed().await?;
let mut relayed = self.microkv.get_as("affirm.relayed")?.unwrap_or(0);
let target = self.microkv.get_as("affirm.target")?.unwrap_or(0);
tracing::info!(
target: "pangolin-ropsten",
"[ropsten] [affirm] [handle] The last confirmed ethereum block is {}",
last_confirmed
);
if last_confirmed > relayed {
self.microkv.put("affirm.relayed", &last_confirmed)?;
relayed = last_confirmed;
} else {
tracing::trace!(
target: "pangolin-ropsten",
"[ropsten] [affirm] [handle] The last relayed ethereum block is {}",
relayed
);
}
if target > relayed {
tracing::trace!(
target: "pangolin-ropsten",
"[ropsten] [affirm] [handle] You are affirming ethereum block {}",
target
);
self.do_affirm(target).await?
} else {
tracing::trace!(
target: "pangolin-ropsten",
"[ropsten] [affirm] [handle] The block ({}) is less or equal with relayed {}, so nothing to do",
target,
relayed,
);
}
Ok(())
}
pub fn update_target(&self, block_number: u64) -> color_eyre::Result<()> {
let target = self.microkv.get_as("affirm.target")?.unwrap_or(0);
if block_number > target {
self.microkv.put("affirm.target", &block_number)?;
}
Ok(())
}
async fn do_affirm(&mut self, target: u64) -> color_eyre::Result<()> {
let pending_headers = self
.client
.runtime()
.storage()
.ethereum_relay()
.pending_relay_header_parcels(None)
.await?;
for pending_header in pending_headers {
let pending_block_number = pending_header.1.header.number as u64;
if pending_block_number >= target {
tracing::trace!(
target: "pangolin-ropsten",
"[ropsten] [affirm] [handle] The affirming target block {} is in pending",
target
);
return Ok(());
}
}
for (_game_id, game) in self.client.ethereum().affirmations().await?.iter() {
for (_round_id, affirmations) in game.iter() {
if client_pangolin::helpers::affirmations_contains_block(affirmations, target) {
tracing::trace!(
target: "pangolin-ropsten",
"[ropsten] [affirm] [handle] The affirming target block {} is in the relayer game",
target
);
return Ok(());
}
}
}
tracing::trace!(
target: "pangolin-ropsten",
"[ropsten] [affirm] [handle] Prepare to affirm ethereum block: {}",
target
);
match self.shadow.parcel(target).await {
Ok(parcel) => {
let parcel: EthereumRelayHeaderParcel = parcel.try_into()?;
if parcel.parent_mmr_root.to_fixed_bytes() == [0u8; 32] {
tracing::trace!(
target: "pangolin-ropsten",
"[ropsten] [affirm] [handle] Shadow service failed to provide parcel for block {}",
target
);
return Ok(());
}
let ex = Extrinsic::Affirm(parcel);
self.sender_to_extrinsics
.send(ToExtrinsicsMessage::Extrinsic(ex))
.await?
}
Err(err) => {
return Err(err.into());
}
}
Ok(())
}
}
