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Implement HRMP (#1900)

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* HRMP: Update the impl guide

* HRMP: Incorporate the channel notifications into the guide

* HRMP: Renaming in the impl guide

* HRMP: Constrain the maximum number of HRMP messages per candidate

This commit addresses the HRMP part of https://github.com/paritytech/polkadot/issues/1869

* XCM: Introduce HRMP related message types

* HRMP: Data structures and plumbing

* HRMP: Configuration

* HRMP: Data layout

* HRMP: Acceptance & Enactment

* HRMP: Test base logic

* Update adder collator

* HRMP: Runtime API for accessing inbound messages

Also, removing some redundant fully-qualified names.

* HRMP: Add diagnostic logging in acceptance criteria

* HRMP: Additional tests

* Self-review fixes

* save test refactorings for the next time

* Missed a return statement.

* a formatting blip

* Add missing logic for appending HRMP digests

* Remove the channel contents vectors which became empty

* Tighten HRMP channel digests invariants.

* Apply suggestions from code review

Co-authored-by: Peter Goodspeed-Niklaus <coriolinus@users.noreply.github.com>

* Remove a note about sorting for channel id

* Add missing rustdocs to the configuration

* Clarify and update the invariant for HrmpChannelDigests

* Make the onboarding invariant less sloppy

Namely, introduce `Paras::is_valid_para` (in fact, it already is present
in the implementation) and hook up the invariant to that.

Note that this says "within a session" because I don't want to make it
super strict on the session boundary. The logic on the session boundary
should be extremely careful.

* Make `CandidateCheckContext` use T::BlockNumber for hrmp_watermark

Co-authored-by: Peter Goodspeed-Niklaus <coriolinus@users.noreply.github.com>
This commit is contained in:
Sergei Shulepov
2020-11-06 16:35:36 +01:00
committed by GitHub
parent 8a2911b85d
commit c96f8cfcca
33 changed files with 2024 additions and 72 deletions
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polkadot/roadmap/implementers-guide/src/runtime/paras.md
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@@ -111,6 +111,7 @@ OutgoingParas: Vec<ParaId>;
* `note_new_head(ParaId, HeadData, BlockNumber)`: note that a para has progressed to a new head, where the new head was executed in the context of a relay-chain block with given number. This will apply pending code upgrades based on the block number provided.
* `validation_code_at(ParaId, at: BlockNumber, assume_intermediate: Option<BlockNumber>)`: Fetches the validation code to be used when validating a block in the context of the given relay-chain height. A second block number parameter may be used to tell the lookup to proceed as if an intermediate parablock has been included at the given relay-chain height. This may return past, current, or (with certain choices of `assume_intermediate`) future code. `assume_intermediate`, if provided, must be before `at`. If the validation code has been pruned, this will return `None`.
* `is_parathread(ParaId) -> bool`: Returns true if the para ID references any live parathread.
* `is_valid_para(ParaId) -> bool`: Returns true if the para ID references either a live parathread or live parachain.
* `last_code_upgrade(id: ParaId, include_future: bool) -> Option<BlockNumber>`: The block number of the last scheduled upgrade of the requested para. Includes future upgrades if the flag is set. This is the `expected_at` number, not the `activated_at` number.
* `persisted_validation_data(id: ParaId) -> Option<PersistedValidationData>`: Get the PersistedValidationData of the given para, assuming the context is the parent block. Returns `None` if the para is not known.