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/teyrchains/src/lib.rs

@@ -0,0 +1,32 @@
+// 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/>.
+
+use std::fmt::Debug;
+
+use relay_bizinikiwi_client::{Chain, Teyrchain};
+
+pub mod teyrchains_loop;
+pub mod teyrchains_loop_metrics;
+
+/// Finality proofs synchronization pipeline.
+pub trait TeyrchainsPipeline: 'static + Clone + Debug + Send + Sync {
+	/// Relay chain which is storing teyrchain heads in its `paras` module.
+	type SourceRelayChain: Chain;
+	/// Teyrchain which headers we are syncing here.
+	type SourceTeyrchain: Teyrchain;
+	/// Target chain (either relay or para) which wants to know about new teyrchain heads.
+	type TargetChain: Chain;
+}

pezbridges/relays/teyrchains/src/teyrchains_loop_metrics.rs

@@ -0,0 +1,86 @@
+// 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/>.
+
+use bp_pezkuwi_core::teyrchains::ParaId;
+use relay_utils::{
+	metrics::{metric_name, register, Gauge, Metric, PrometheusError, Registry, U64},
+	UniqueSaturatedInto,
+};
+
+/// Teyrchains sync metrics.
+#[derive(Clone)]
+pub struct TeyrchainsLoopMetrics {
+	/// Best teyrchains header numbers at the source.
+	best_source_block_numbers: Gauge<U64>,
+	/// Best teyrchains header numbers at the target.
+	best_target_block_numbers: Gauge<U64>,
+}
+
+impl TeyrchainsLoopMetrics {
+	/// Create and register teyrchains loop metrics.
+	pub fn new(prefix: Option<&str>) -> Result<Self, PrometheusError> {
+		Ok(TeyrchainsLoopMetrics {
+			best_source_block_numbers: Gauge::new(
+				metric_name(prefix, "best_teyrchain_block_number_at_source"),
+				"Best teyrchain block numbers at the source relay chain".to_string(),
+			)?,
+			best_target_block_numbers: Gauge::new(
+				metric_name(prefix, "best_teyrchain_block_number_at_target"),
+				"Best teyrchain block numbers at the target chain".to_string(),
+			)?,
+		})
+	}
+
+	/// Update best block number at source.
+	pub fn update_best_teyrchain_block_at_source<Number: UniqueSaturatedInto<u64>>(
+		&self,
+		teyrchain: ParaId,
+		block_number: Number,
+	) {
+		let block_number = block_number.unique_saturated_into();
+		tracing::trace!(
+			target: "bridge-metrics",
+			?teyrchain,
+			?block_number,
+			"Updated value of metric 'best_teyrchain_block_number_at_source"
+		);
+		self.best_source_block_numbers.set(block_number);
+	}
+
+	/// Update best block number at target.
+	pub fn update_best_teyrchain_block_at_target<Number: UniqueSaturatedInto<u64>>(
+		&self,
+		teyrchain: ParaId,
+		block_number: Number,
+	) {
+		let block_number = block_number.unique_saturated_into();
+		tracing::trace!(
+			target: "bridge-metrics",
+			?teyrchain,
+			?block_number,
+			"Updated value of metric 'best_teyrchain_block_number_at_target"
+		);
+		self.best_target_block_numbers.set(block_number);
+	}
+}
+
+impl Metric for TeyrchainsLoopMetrics {
+	fn register(&self, registry: &Registry) -> Result<(), PrometheusError> {
+		register(self.best_source_block_numbers.clone(), registry)?;
+		register(self.best_target_block_numbers.clone(), registry)?;
+		Ok(())
+	}
+}