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Scheduler Module (#1162)

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* scheduler module skeleton

* update scheduler skeleton to match latest version of guide

* better session change notification

* add mock randomness and fix test compilation

* shuffle validators into groups

* finish implementing session change logic for scheduler

* tweak core assignment type to track retries of parathread

* reframe queued parathread core as offset

* implement initialzation and finalization routines

* implement parathread claim queuing

* implement core_para

* implement the group_validators routine and fix errors

* add a reason for freeing cores

* implement `schedule` function

* add some docs to the scheduled function

* implement `occupied` helper

* implement availability predicate

* fix some warnings

* integrate scheduler into initializer

* integrate scheduler into mock module

* avoid conflict with Substrate's scheduler storage

* add parathreads index to paras module

* implement parathreads map in paras module

* add is_parathread to paras

* test adding parathread claim

* test that you cannot add claims when no parathread cores exist

* check session change parathread queue pruning

* test validator shuffling

* add allow_unused to scheduler items

* add test for scheduling

* add some more tests for scheduling logic

* test core rotation

* check parathread claim pruning after retries

* add bound notes

* Apply suggestions from code review

Co-authored-by: Peter Goodspeed-Niklaus <coriolinus@users.noreply.github.com>
Co-authored-by: Bernhard Schuster <bernhard@ahoi.io>

* more suggestions from review

* test availability predicate, add box to please compiler

* add changes to guide

Co-authored-by: Peter Goodspeed-Niklaus <coriolinus@users.noreply.github.com>
Co-authored-by: Bernhard Schuster <bernhard@ahoi.io>
This commit is contained in:
Robert Habermeier
2020-06-11 15:15:30 -04:00
committed by GitHub
parent 053bfc2d0c
commit 04c8603042
10 changed files with 1637 additions and 29 deletions
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polkadot/runtime/parachains/src/configuration.rs
+2 -2
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@@ -33,7 +33,7 @@ use system::ensure_root;
/// All configuration of the runtime with respect to parachains and parathreads.
#[derive(Clone, Encode, Decode, PartialEq, Default)]
#[cfg_attr(test, derive(Debug))]
pub struct HostConfiguration<BlockNumber: Default> {
pub struct HostConfiguration<BlockNumber> {
/// The minimum frequency at which parachains can update their validation code.
pub validation_upgrade_frequency: BlockNumber,
/// The delay, in blocks, before a validation upgrade is applied.
@@ -49,7 +49,7 @@ pub struct HostConfiguration<BlockNumber: Default> {
pub parathread_cores: u32,
/// The number of retries that a parathread author has to submit their block.
pub parathread_retries: u32,
/// How often parachain groups should be rotated across parachains.
/// How often parachain groups should be rotated across parachains. Must be non-zero.
pub parachain_rotation_frequency: BlockNumber,
/// The availability period, in blocks, for parachains. This is the amount of blocks
/// after inclusion that validators have to make the block available and signal its availability to