fix: Complete snowbridge pezpallet rebrand and critical bug fixes

- snowbridge-pezpallet-* → pezsnowbridge-pezpallet-* (201 refs)
- pallet/ directories → pezpallet/ (4 locations)
- Fixed pezpallet.rs self-include recursion bug
- Fixed sc-chain-spec hardcoded crate name in derive macro
- Reverted .pezpallet_by_name() to .pallet_by_name() (subxt API)
- Added BizinikiwiConfig type alias for zombienet tests
- Deleted obsolete session state files

Verified: pezsnowbridge-pezpallet-*, pezpallet-staking,
pezpallet-staking-async, pezframe-benchmarking-cli all pass cargo check

pezbridges/relays/messages/src/metrics.rs

@@ -0,0 +1,177 @@
+// Copyright 2019-2021 Parity Technologies (UK) Ltd.
+// This file is part of Parity Bridges Common.
+
+// Parity Bridges Common is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity Bridges Common is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity Bridges Common.  If not, see <http://www.gnu.org/licenses/>.
+
+//! Metrics for message lane relay loop.
+
+use crate::{
+	message_lane::MessageLane,
+	message_lane_loop::{SourceClientState, TargetClientState},
+};
+
+use bp_messages::{HashedLaneId, LegacyLaneId, MessageNonce};
+use pez_finality_relay::SyncLoopMetrics;
+use relay_utils::metrics::{
+	metric_name, register, GaugeVec, Metric, Opts, PrometheusError, Registry, U64,
+};
+
+/// Message lane relay metrics.
+///
+/// Cloning only clones references.
+#[derive(Clone)]
+pub struct MessageLaneLoopMetrics {
+	/// Best finalized block numbers - "source", "source_at_target", "target_at_source".
+	source_to_target_finality_metrics: SyncLoopMetrics,
+	/// Best finalized block numbers - "source", "target", "source_at_target", "target_at_source".
+	target_to_source_finality_metrics: SyncLoopMetrics,
+	/// Lane state nonces: "source_latest_generated", "source_latest_confirmed",
+	/// "target_latest_received", "target_latest_confirmed".
+	lane_state_nonces: GaugeVec<U64>,
+}
+
+impl MessageLaneLoopMetrics {
+	/// Create and register messages loop metrics.
+	pub fn new(prefix: Option<&str>) -> Result<Self, PrometheusError> {
+		Ok(MessageLaneLoopMetrics {
+			source_to_target_finality_metrics: SyncLoopMetrics::new(
+				prefix,
+				"source",
+				"source_at_target",
+			)?,
+			target_to_source_finality_metrics: SyncLoopMetrics::new(
+				prefix,
+				"target",
+				"target_at_source",
+			)?,
+			lane_state_nonces: GaugeVec::new(
+				Opts::new(metric_name(prefix, "lane_state_nonces"), "Nonces of the lane state"),
+				&["type"],
+			)?,
+		})
+	}
+
+	/// Update source client state metrics.
+	pub fn update_source_state<P: MessageLane>(&self, source_client_state: SourceClientState<P>) {
+		self.source_to_target_finality_metrics
+			.update_best_block_at_source(source_client_state.best_self.0);
+		if let Some(best_finalized_peer_at_best_self) =
+			source_client_state.best_finalized_peer_at_best_self
+		{
+			self.target_to_source_finality_metrics
+				.update_best_block_at_target(best_finalized_peer_at_best_self.0);
+			if let Some(actual_best_finalized_peer_at_best_self) =
+				source_client_state.actual_best_finalized_peer_at_best_self
+			{
+				self.target_to_source_finality_metrics.update_using_same_fork(
+					best_finalized_peer_at_best_self.1 == actual_best_finalized_peer_at_best_self.1,
+				);
+			}
+		}
+	}
+
+	/// Update target client state metrics.
+	pub fn update_target_state<P: MessageLane>(&self, target_client_state: TargetClientState<P>) {
+		self.target_to_source_finality_metrics
+			.update_best_block_at_source(target_client_state.best_self.0);
+		if let Some(best_finalized_peer_at_best_self) =
+			target_client_state.best_finalized_peer_at_best_self
+		{
+			self.source_to_target_finality_metrics
+				.update_best_block_at_target(best_finalized_peer_at_best_self.0);
+			if let Some(actual_best_finalized_peer_at_best_self) =
+				target_client_state.actual_best_finalized_peer_at_best_self
+			{
+				self.source_to_target_finality_metrics.update_using_same_fork(
+					best_finalized_peer_at_best_self.1 == actual_best_finalized_peer_at_best_self.1,
+				);
+			}
+		}
+	}
+
+	/// Update latest generated nonce at source.
+	pub fn update_source_latest_generated_nonce(
+		&self,
+		source_latest_generated_nonce: MessageNonce,
+	) {
+		self.lane_state_nonces
+			.with_label_values(&["source_latest_generated"])
+			.set(source_latest_generated_nonce);
+	}
+
+	/// Update the latest confirmed nonce at source.
+	pub fn update_source_latest_confirmed_nonce(
+		&self,
+		source_latest_confirmed_nonce: MessageNonce,
+	) {
+		self.lane_state_nonces
+			.with_label_values(&["source_latest_confirmed"])
+			.set(source_latest_confirmed_nonce);
+	}
+
+	/// Update the latest received nonce at target.
+	pub fn update_target_latest_received_nonce(&self, target_latest_generated_nonce: MessageNonce) {
+		self.lane_state_nonces
+			.with_label_values(&["target_latest_received"])
+			.set(target_latest_generated_nonce);
+	}
+
+	/// Update the latest confirmed nonce at target.
+	pub fn update_target_latest_confirmed_nonce(
+		&self,
+		target_latest_confirmed_nonce: MessageNonce,
+	) {
+		self.lane_state_nonces
+			.with_label_values(&["target_latest_confirmed"])
+			.set(target_latest_confirmed_nonce);
+	}
+}
+
+impl Metric for MessageLaneLoopMetrics {
+	fn register(&self, registry: &Registry) -> Result<(), PrometheusError> {
+		self.source_to_target_finality_metrics.register(registry)?;
+		self.target_to_source_finality_metrics.register(registry)?;
+		register(self.lane_state_nonces.clone(), registry)?;
+		Ok(())
+	}
+}
+
+/// Provides a label for metrics.
+pub trait Labeled {
+	/// Returns a label.
+	fn label(&self) -> String;
+}
+
+/// `Labeled` implementation for `LegacyLaneId`.
+impl Labeled for LegacyLaneId {
+	fn label(&self) -> String {
+		hex::encode(self.0)
+	}
+}
+
+/// `Labeled` implementation for `HashedLaneId`.
+impl Labeled for HashedLaneId {
+	fn label(&self) -> String {
+		format!("{:?}", self.inner())
+	}
+}
+
+#[test]
+fn lane_to_label_works() {
+	assert_eq!(
+		"0x0101010101010101010101010101010101010101010101010101010101010101",
+		HashedLaneId::from_inner(pezsp_core::H256::from([1u8; 32])).label(),
+	);
+	assert_eq!("00000001", LegacyLaneId([0, 0, 0, 1]).label());
+}