Merge remote-tracking branch 'origin/master' into eshaben/infra-formatting

Author: eshaben

.DS_Store

@@ -2,6 +2,7 @@ name: 'Check PR Labels'
 
 on:
   pull_request:
+    types: [opened, synchronize, reopened, labeled, unlabeled]
 
 jobs:
   check-docs-links:

.github/workflows/check-pr-labels.yml

@@ -1,3 +1,4 @@
 node_modules
 .vscode
-target
+target
+.DS_Store

.gitignore

@@ -0,0 +1,3 @@
+...
+cumulus-primitives-aura = { path = "../../../../primitives/aura", default-features = false }
+...

.snippets/code/develop/parachains/maintenance/configure-asynchronous-backing/Cargo.toml

@@ -0,0 +1,3 @@
+fn impl_slot_duration() -> sp_consensus_aura::SlotDuration {
+    sp_consensus_aura::SlotDuration::from_millis(SLOT_DURATION)
+}

.snippets/code/develop/parachains/maintenance/configure-asynchronous-backing/apis-01.rs

@@ -0,0 +1,8 @@
+impl cumulus_primitives_aura::AuraUnincludedSegmentApi<Block> for Runtime {
+    fn can_build_upon(
+        included_hash: <Block as BlockT>::Hash,
+        slot: cumulus_primitives_aura::Slot,
+    ) -> bool {
+        Runtime::impl_can_build_upon(included_hash, slot)
+    }
+}

.snippets/code/develop/parachains/maintenance/configure-asynchronous-backing/apis-02.rs

@@ -0,0 +1,6 @@
+...
+"async_backing_params": {
+    "max_candidate_depth": 3,
+    "allowed_ancestry_len": 2
+},
+...

.snippets/code/develop/parachains/maintenance/configure-asynchronous-backing/genesis_config_preset_snippet.rs

@@ -0,0 +1,8 @@
+// Maximum number of blocks simultaneously accepted by the runtime, not yet included into the
+// relay chain.
+pub const UNINCLUDED_SEGMENT_CAPACITY: u32 = 1;
+// How many parachain blocks are processed by the relay chain per parent. Limits the number of
+// blocks authored per slot.
+pub const BLOCK_PROCESSING_VELOCITY: u32 = 1;
+// Relay chain slot duration, in milliseconds.
+pub const RELAY_chain_SLOT_DURATION_MILLIS: u32 = 6000;

.snippets/code/develop/parachains/maintenance/configure-asynchronous-backing/lib-01.rs

@@ -0,0 +1,6 @@
+// `SLOT_DURATION` is picked up by `pallet_timestamp` which is in turn picked
+// up by `pallet_aura` to implement `fn slot_duration()`.
+//
+// Change this to adjust the block time.
+pub const MILLISECS_PER_BLOCK: u64 = 12000;
+pub const SLOT_DURATION: u64 = MILLISECS_PER_BLOCK;

.snippets/code/develop/parachains/maintenance/configure-asynchronous-backing/lib-02.rs

@@ -0,0 +1,6 @@
+type ConsensusHook = cumulus_pallet_aura_ext::FixedVelocityConsensusHook<
+    Runtime,
+    RELAY_CHAIN_SLOT_DURATION_MILLIS,
+    BLOCK_PROCESSING_VELOCITY,
+    UNINCLUDED_SEGMENT_CAPACITY,
+>;