https://github.com/paritytech/polkadot-sdk/issues/3130

builds on top of https://github.com/paritytech/polkadot-sdk/pull/3160

Processes the availability cores and builds a record of how many
candidates it should request from prospective-parachains and their
predecessors.
Tries to supply as many candidates as the runtime can back. Note that
the runtime changes to back multiple candidates per para are not yet
done, but this paves the way for it.

The following backing/inclusion policy is assumed:
1. the runtime will never back candidates of the same para which don't
form a chain with the already backed candidates. Even if the others are
still pending availability. We're optimistic that they won't time out
and we don't want to back parachain forks (as the complexity would be
huge).
2. if a candidate is timed out of the core before being included, all of
its successors occupying a core will be evicted.
3. only the candidates which are made available and form a chain
starting from the on-chain para head may be included/enacted and cleared
from the cores. In other words, if para head is at A and the cores are
occupied by B->C->D, and B and D are made available, only B will be
included and its core cleared. C and D will remain on the cores awaiting
for C to be made available or timed out. As point (2) above already
says, if C is timed out, D will also be dropped.
4. The runtime will deduplicate candidates which form a cycle. For
example if the provisioner supplies candidates A->B->A, the runtime will
only back A (as the state output will be the same)

Note that if a candidate is timed out, we don't guarantee that in the
next relay chain block the block author will be able to fill all of the
timed out cores of the para. That increases complexity by a lot.
Instead, the provisioner will supply N candidates where N is the number
of candidates timed out, but doesn't include their successors which will
be also deleted by the runtime. This'll be backfilled in the next relay
chain block.

Adjacent changes:
- Also fixes: https://github.com/paritytech/polkadot-sdk/issues/3141
- For non prospective-parachains, don't supply multiple candidates per
para (we can't have elastic scaling without prospective parachains
enabled). paras_inherent should already sanitise this input but it's
more efficient this way.

Note: all of these changes are backwards-compatible with the
non-elastic-scaling scenario (one core per para).

### What's been done
- `subsystem-bench` has been split into two parts: a cli benchmark
runner and a library.
- The cli runner is quite simple. It just allows us to run `.yaml` based
test sequences. Now it should only be used to run benchmarks during
development.
- The library is used in the cli runner and in regression tests. Some
code is changed to make the library independent of the runner.
- Added first regression tests for availability read and write that
replicate existing test sequences.

### How we run regression tests
- Regression tests are simply rust integration tests without the
harnesses.
- They should only be compiled under the `subsystem-benchmarks` feature
to prevent them from running with other tests.
- This doesn't work when running tests with `nextest` in CI, so
additional filters have been added to the `nextest` runs.
- Each benchmark run takes a different time in the beginning, so we
"warm up" the tests until their CPU usage differs by only 1%.
- After the warm-up, we run the benchmarks a few more times and compare
the average with the exception using a precision.

### What is still wrong?
- I haven't managed to set up approval voting tests. The spread of their
results is too large and can't be narrowed down in a reasonable amount
of time in the warm-up phase.
- The tests start an unconfigurable prometheus endpoint inside, which
causes errors because they use the same 9999 port. I disable it with a
flag, but I think it's better to extract the endpoint launching outside
the test, as we already do with `valgrind` and `pyroscope`. But we still
use `prometheus` inside the tests.

### Future work
* https://github.com/paritytech/polkadot-sdk/issues/3528
* https://github.com/paritytech/polkadot-sdk/issues/3529
* https://github.com/paritytech/polkadot-sdk/issues/3530
* https://github.com/paritytech/polkadot-sdk/issues/3531

---------

Co-authored-by: Alexander Samusev <[email protected]>

expose para id via metadata

#2116 is blocked by this

Fixes https://github.com/paritytech/polkadot-sdk/issues/3496.

This PR backports Node version and `spec_version` bumps to `1.8.0` from
the latest release and orders prdoc files related to it.

If an XCM execution fails or ends with leftover assets, these will be
trapped.
In order to claim them, a custom XCM has to be executed, with the
`ClaimAsset` instruction.
However, arbitrary XCM execution is not allowed everywhere yet and XCM
itself is still not easy enough to use for users out there with trapped
assets.
This new extrinsic in `pallet-xcm` will allow these users to easily
claim their assets, without concerning themselves with writing arbitrary
XCMs.

Part of fixing https://github.com/paritytech/polkadot-sdk/issues/3495

---------

Co-authored-by: command-bot <>
Co-authored-by: Adrian Catangiu <[email protected]>

This fixes an issue introduced in
https://github.com/paritytech/substrate/pull/14101, in which I removed
the `Call` enum's documentation and replaced it with a link to the
`Pallet` struct, but this also removed any docs related to call from the
metadata.

I tried to add a regression test for this, but it seems to me that this
is not possible, given that using `type-info` we only assert in type-ids
for `Call`, `Event` and `Error`. I removed some doc comments from a test
setup in `frame-support-test` to demonstrate the issue there. @jsdw do
you have any comments on this?

I also fixed a small issue in the custom html/css of `polkadot-sdk-doc`
crate, making sure it does not affect the rust-doc page of all other
crates.

- [x] Investigate a regression test
- [x] prdoc

Signed-off-by: Andrei Sandu <[email protected]>

Co-authored-by: Liam Aharon <[email protected]>

If approval was in progress we didn't actually restart it, so we end up
in a situation where we distribute our assignment, but we don't
distribute any approval.

---------

Signed-off-by: Alexandru Gheorghe <[email protected]>

This PR removes `AssignmentProviderConfig` and uses the corresponding
ondemand parameters from `HostConfiguration` instead. Additionally
`scheduling_lookahead` and all coretime/ondemand related parameters are
extracted in a separate struct - `SchedulerParams`.

The most relevant commit from the PR is [this
one](https://github.com/paritytech/polkadot-sdk/pull/3181/commits/830bc0f5).

Fixes https://github.com/paritytech/polkadot-sdk/issues/2268

---------

Co-authored-by: command-bot <>

# Description

*Removes `sp_weights::OldWeight` and its usage*

Fixes #144

---------

Co-authored-by: Liam Aharon <[email protected]>

Fixing: 
```
Verification failed for block 0x07bbf1e04121d70a4bdb21cc055132b53ac2390fa95c4d05497fc91b1e8bf7f5 received from (12D3KooWJzLd8skcAgA24EcJey7aJAhYctfUxWGjSP5Usk9wbpPZ): "Header 0x07bbf1e04121d70a4bdb21cc055132b53ac2390fa95c4d05497fc91b1e8bf7f5 rejected: too far in the future"   
```

---------

Signed-off-by: Alexandru Gheorghe <[email protected]>
Co-authored-by: Dmitry Sinyavin <[email protected]>
Co-authored-by: s0me0ne-unkn0wn <[email protected]>
Co-authored-by: Bastian Köcher <[email protected]>

This MR is the merge of
https://github.com/paritytech/substrate/pull/14414 and
https://github.com/paritytech/substrate/pull/14275. It implements
[RFC#13](https://github.com/polkadot-fellows/RFCs/pull/13), closes
https://github.com/paritytech/polkadot-sdk/issues/198.

----- 

This Merge request introduces three major topicals:

1. Multi-Block-Migrations
1. New pallet `poll` hook for periodic service work
1. Replacement hooks for `on_initialize` and `on_finalize` in cases
where `poll` cannot be used

and some more general changes to FRAME.  
The changes for each topical span over multiple crates. They are listed
in topical order below.

# 1.) Multi-Block-Migrations

Multi-Block-Migrations are facilitated by creating `pallet_migrations`
and configuring `System::Config::MultiBlockMigrator` to point to it.
Executive picks this up and triggers one step of the migrations pallet
per block.
The chain is in lockdown mode for as long as an MBM is ongoing.
Executive does this by polling `MultiBlockMigrator::ongoing` and not
allowing any transaction in a block, if true.

A MBM is defined through trait `SteppedMigration`. A condensed version
looks like this:
```rust
/// A migration that can proceed in multiple steps.
pub trait SteppedMigration {
	type Cursor: FullCodec + MaxEncodedLen;
	type Identifier: FullCodec + MaxEncodedLen;

	fn id() -> Self::Identifier;

	fn max_steps() -> Option<u32>;

	fn step(
		cursor: Option<Self::Cursor>,
		meter: &mut WeightMeter,
	) -> Result<Option<Self::Cursor>, SteppedMigrationError>;
}
```

`pallet_migrations` can be configured with an aggregated tuple of these
migrations. It then starts to migrate them one-by-one on the next
runtime upgrade.
Two things are important here:
- 1. Doing another runtime upgrade while MBMs are ongoing is not a good
idea and can lead to messed up state.
- 2. **Pallet Migrations MUST BE CONFIGURED IN `System::Config`,
otherwise it is not used.**

The pallet supports an `UpgradeStatusHandler` that can be used to notify
external logic of upgrade start/finish (for example to pause XCM
dispatch).

Error recovery is very limited in the case that a migration errors or
times out (exceeds its `max_steps`). Currently the runtime dev can
decide in `FailedMigrationHandler::failed` how to handle this. One
follow-up would be to pair this with the `SafeMode` pallet and enact
safe mode when an upgrade fails, to allow governance to rescue the
chain. This is currently not possible, since governance is not
`Mandatory`.

## Runtime API

- `Core`: `initialize_block` now returns `ExtrinsicInclusionMode` to
inform the Block Author whether they can push transactions.

### Integration

Add it to your runtime implementation of `Core` and `BlockBuilder`:
```patch
diff --git a/runtime/src/lib.rs b/runtime/src/lib.rs
@@ impl_runtime_apis! {
	impl sp_block_builder::Core<Block> for Runtime {
-		fn initialize_block(header: &<Block as BlockT>::Header) {
+		fn initialize_block(header: &<Block as BlockT>::Header) -> RuntimeExecutiveMode {
			Executive::initialize_block(header)
		}

		...
	}
```

# 2.) `poll` hook

A new pallet hook is introduced: `poll`. `Poll` is intended to replace
mostly all usage of `on_initialize`.
The reason for this is that any code that can be called from
`on_initialize` cannot be migrated through an MBM. Currently there is no
way to statically check this; the implication is to use `on_initialize`
as rarely as possible.
Failing to do so can result in broken storage invariants.

The implementation of the poll hook depends on the `Runtime API` changes
that are explained above.

# 3.) Hard-Deadline callbacks

Three new callbacks are introduced and configured on `System::Config`:
`PreInherents`, `PostInherents` and `PostTransactions`.
These hooks are meant as replacement for `on_initialize` and
`on_finalize` in cases where the code that runs cannot be moved to
`poll`.
The reason for this is to make the usage of HD-code (hard deadline) more
explicit - again to prevent broken invariants by MBMs.

# 4.) FRAME (general changes)

## `frame_system` pallet

A new memorize storage item `InherentsApplied` is added. It is used by
executive to track whether inherents have already been applied.
Executive and can then execute the MBMs directly between inherents and
transactions.

The `Config` gets five new items:
- `SingleBlockMigrations` this is the new way of configuring migrations
that run in a single block. Previously they were defined as last generic
argument of `Executive`. This shift is brings all central configuration
about migrations closer into view of the developer (migrations that are
configured in `Executive` will still work for now but is deprecated).
- `MultiBlockMigrator` this can be configured to an engine that drives
MBMs. One example would be the `pallet_migrations`. Note that this is
only the engine; the exact MBMs are injected into the engine.
- `PreInherents` a callback that executes after `on_initialize` but
before inherents.
- `PostInherents` a callback that executes after all inherents ran
(including MBMs and `poll`).
- `PostTransactions` in symmetry to `PreInherents`, this one is called
before `on_finalize` but after all transactions.

A sane default is to set all of these to `()`. Example diff suitable for
any chain:
```patch
@@ impl frame_system::Config for Test {
 	type MaxConsumers = ConstU32<16>;
+	type SingleBlockMigrations = ();
+	type MultiBlockMigrator = ();
+	type PreInherents = ();
+	type PostInherents = ();
+	type PostTransactions = ();
 }
```

An overview of how the block execution now looks like is here. The same
graph is also in the rust doc.

<details><summary>Block Execution Flow</summary>
<p>

![Screenshot 2023-12-04 at 19 11
29](https://github.com/paritytech/polkadot-sdk/assets/10380170/e88a80c4-ef11-4faa-8df5-8b33a724c054)

</p>
</details> 

## Inherent Order

Moved to https://github.com/paritytech/polkadot-sdk/pull/2154

---------------


## TODO

- [ ] Check that `try-runtime` still works
- [ ] Ensure backwards compatibility with old Runtime APIs
- [x] Consume weight correctly
- [x] Cleanup

---------

Signed-off-by: Oliver Tale-Yazdi <[email protected]>
Co-authored-by: Liam Aharon <[email protected]>
Co-authored-by: Juan Girini <[email protected]>
Co-authored-by: command-bot <>
Co-authored-by: Francisco Aguirre <[email protected]>
Co-authored-by: Gavin Wood <[email protected]>
Co-authored-by: Bastian Köcher <[email protected]>

While adding runtime tests to
https://github.com/polkadot-fellows/runtimes/pull/130, I noticed the
Ethereum chain ID was hardcoded. For Kusama + Polkadot, the Ethereum
chain ID should 1 (Mainnet), whereas on Rococo it is 11155111 (Sepolia).

This PR also updates the Snowbridge crates versions to the current
versions on crates.io.

---------

Co-authored-by: claravanstaden <Cats 4 life!>

resolve https://github.com/paritytech/polkadot-sdk/issues/3139

- [x] use a distinguishable error for `execute_artifact`
- [x] remove artifact in case of a `RuntimeConstruction` error during
the execution
- [x] augment the `validate_candidate_with_retry` of `ValidationBackend`
with the case of retriable `RuntimeConstruction` error during the
execution
- [x] update the book
(https://paritytech.github.io/polkadot-sdk/book/node/utility/pvf-host-and-workers.html#retrying-execution-requests)
- [x] add a test
- [x] run zombienet tests

---------

Co-authored-by: s0me0ne-unkn0wn <[email protected]>

- deprecation companion:
https://github.com/substrate-developer-hub/substrate-docs/pull/2136
- inspired by
https://substrate.stackexchange.com/questions/11058/how-can-i-create-ocw-that-wont-activates-every-block-but-will-activates-only-w/11060#11060

---------

Co-authored-by: Sergej Sakac <[email protected]>

Changes:
- Add an optional `bump` field to the crates in a prdoc.
- Explain the cargo semver interpretation for <1 versions in the release
doc.

---------

Signed-off-by: Oliver Tale-Yazdi <[email protected]>

This PR adds tests for the `transaction_broadcast` method.


The testing needs to coordinate the following components:
- The `TestApi` marks transactions as invalid and implements
`ChainApi::validate_transaction`
- this is what dictates if a transaction is valid or not and is called
from within the `BasicPool`
- The `BasicPool` which maintains the transactions and implements
`submit_and_watch` needed by the tx broadcast to submit the transaction
- The status of the transaction pool is exposed by mocking the BasicPool
- The `ChainHeadMockClient` which mocks the
`BlockchainEvents::import_notification_stream` needed by the tx
broadcast to know to which blocks the transaction is submitted

The following changes have been added to the substrate testing to
accommodate this:
- `TestApi` gets ` remove_invalid`, counterpart to `add_invalid` to
ensure an invalid transaction can become valid again; as well as a
priority setter for extrinsics
- `BasicPool` test constructor is extended with options for the
`PoolRotator`
- this mechanism is needed because transactions are banned for 30mins
(default) after they are declared invalid
  - testing bypasses this by providing a `Duration::ZERO`

### Testing Scenarios

- Capture the status of the transaction as it is normally broadcasted
- `transaction_stop` is valid while the transaction is in progress
- A future transaction is handled when the dependencies are completed
- Try to resubmit the transaction at a later block (currently invalid)
- An invalid transaction status is propagated; the transaction is marked
as temporarily banned; then the ban expires and transaction is
resubmitted
  
This builds on top of:
https://github.com/paritytech/polkadot-sdk/pull/3079
Part of: https://github.com/paritytech/polkadot-sdk/issues/3084

cc @paritytech/subxt-team

---------

Signed-off-by: Alexandru Vasile <[email protected]>
Co-authored-by: James Wilson <[email protected]>

Closes https://github.com/paritytech/polkadot-sdk-docs/issues/55

- Changes 'current storage version' terminology to less ambiguous
'in-code storage version' (suggestion by @ggwpez

)
- Adds a new example pallet `pallet-example-single-block-migrations`
- Adds a new reference doc to replace
https://docs.substrate.io/maintain/runtime-upgrades/ (temporarily living
in the pallet while we wait for developer hub PR to merge)
- Adds documentation for the `storage_alias` macro
- Improves `trait Hooks` docs 
- Improves `trait GetStorageVersion` docs
- Update the suggested patterns for using `VersionedMigration`, so that
version unchecked migrations are never exported
- Prevents accidental usage of version unchecked migrations in runtimes

https://github.com/paritytech/substrate/pull/14421#discussion_r1255467895
- Unversioned migration code is kept inside `mod version_unchecked`,
versioned code is kept in `pub mod versioned`
- It is necessary to use modules to limit visibility because the inner
migration must be `pub`. See
https://github.com/rust-lang/rust/issues/30905 and

https://internals.rust-lang.org/t/lang-team-minutes-private-in-public-rules/4504/40
for more.

### todo

- [x] move to reference docs to proper place within sdk-docs (now that
https://github.com/paritytech/polkadot-sdk/pull/2102 is merged)
- [x] prdoc

---------

Co-authored-by: Kian Paimani <[email protected]>
Co-authored-by: Juan <[email protected]>
Co-authored-by: Oliver Tale-Yazdi <[email protected]>
Co-authored-by: command-bot <>
Co-authored-by: gupnik <[email protected]>

resolve https://github.com/paritytech/polkadot-sdk/issues/3116

a follow-up on
https://github.com/paritytech/polkadot-sdk/pull/3061#pullrequestreview-1847530265:

- [x] reuse collator overseer builder for polkadot-node and collator
- [x] run zombienet test (0001-parachains-smoke-test.toml)
- [x] make wasm build errors more user-friendly for an easier problem
detection when using different toolchains in Rust

---------

Co-authored-by: ordian <[email protected]>
Co-authored-by: s0me0ne-unkn0wn <[email protected]>

Introduce storage attr macro `#[disable_try_decode_storage]` and set it on `System::Events` and `ParachainSystem::HostConfiguration` (#3454)

Closes https://github.com/paritytech/polkadot-sdk/issues/2560

Allows marking storage items with `#[disable_try_decode_storage]`, and
uses it with `System::Events`.

Question: what's the recommended way to write a test for this? I
couldn't find a test for similar existing macro `#[whitelist_storage]`.

Hey everyone,

this PR will replace existing Polkadotters bootnodes for Polkadot,
Kusama and Westend and add Paseo bootnode to the relay chain suite. At
the same time, it will add new bootnodes for all the system parachains,
including People on Westend. This PR is a part of our membership in the
IBP, meaning that all the bootnodes are hosted on our hardware housed in
the data center in Christchurch, New Zealand.
All the bootnodes were tested with an empty chain spec file with the
following command yielding 1 peer.

The test commands used are as follows:
```
./polkadot --base-path /tmp/node --reserved-only --chain paseo --reserved-nodes "/dns/paseo.bootnodes.polkadotters.com/tcp/30540/wss/p2p/12D3KooWPbbFy4TefEGTRF5eTYhq8LEzc4VAHdNUVCbY4nAnhqPP"
./polkadot --base-path /tmp/node --reserved-only --chain westend --reserved-nodes "/dns/westend.bootnodes.polkadotters.com/tcp/30310/wss/p2p/12D3KooWHPHb64jXMtSRJDrYFATWeLnvChL8NtWVttY67DCH1eC5"
./polkadot --base-path /tmp/node --reserved-only --chain kusama --reserved-nodes "/dns/kusama.bootnodes.polkadotters.com/tcp/30313/wss/p2p/12D3KooWHB5rTeNkQdXNJ9ynvGz8Lpnmsctt7Tvp7mrYv6bcwbPG"
./polkadot --base-path /tmp/node --no-hardware-benchmarks --reserved-only --chain polkadot --reserved-nodes "/dns/polkadot.bootnodes.polkadotters.com/tcp/30316/wss/p2p/12D3KooWPAVUgBaBk6n8SztLrMk8ESByncbAfRKUdxY1nygb9zG3"
./polkadot-parachain --base-path /tmp/node --reserved-only --chain asset-hub-kusama --reserved-nodes "/dns/asset-hub-kusama.bootnodes.polkadotters.com/tcp/30513/wss/p2p/12D3KooWDpk7wVH7RgjErEvbvAZ2kY5VeaAwRJP5ojmn1e8b8UbU"
./polkadot-parachain --base-path /tmp/node --reserved-only --chain asset-hub-polkadot --reserved-nodes "/dns/asset-hub-polkadot.bootnodes.polkadotters.com/tcp/30510/wss/p2p/12D3KooWKbfY9a9oywxMJKiALmt7yhrdQkjXMtvxhhDDN23vG93R"
./polkadot-parachain --base-path /tmp/node --reserved-only --chain asset-hub-westend --reserved-nodes "/dns/asset-hub-westend.bootnodes.polkadotters.com/tcp/30516/wss/p2p/12D3KooWNFYysCqmojxqjjaTfD2VkWBNngfyUKWjcR4WFixfHNTk"
./polkadot-parachain --base-path /tmp/node --reserved-only --chain bridge-hub-kusama --reserved-nodes "/dns/bridge-hub-kusama.bootnodes.polkadotters.com/tcp/30522/wss/p2p/12D3KooWH3pucezRRS5esoYyzZsUkKWcPSByQxEvmM819QL1HPLV"
./polkadot-parachain --base-path /tmp/node --reserved-only --chain bridge-hub-kusama --reserved-nodes "/dns/bridge-hub-kusama.bootnodes.polkadotters.com/tcp/30522/wss/p2p/12D3KooWH3pucezRRS5esoYyzZsUkKWcPSByQxEvmM819QL1HPLV"
./polkadot-parachain --base-path /tmp/node --reserved-only --chain bridge-hub-westend --reserved-nodes "/dns/bridge-hub-westend.bootnodes.polkadotters.com/tcp/30525/wss/p2p/12D3KooWPkwgJofp4GeeRwNgXqkp2aFwdLkCWv3qodpBJLwK43Jj"
./polkadot-parachain --base-path /tmp/node --reserved-only --chain collectives-polkadot --reserved-nodes "/dns/collectives-polkadot.bootnodes.polkadotters.com/tcp/30528/wss/p2p/12D3KooWNohUjvJtGKUa8Vhy8C1ZBB5N8JATB6e7rdLVCioeb3ff"
./polkadot-parachain --base-path /tmp/node --reserved-only --chain collectives-westend --reserved-nodes "/dns/collectives-westend.bootnodes.polkadotters.com/tcp/30531/wss/p2p/12D3KooWAFkXNSBfyPduZVgfS7pj5NuVpbU8Ee5gHeF8wvos7Yqn"
./polkadot-parachain --base-path /tmp/node --reserved-only --chain people-westend --reserved-nodes "/dns/identity-westend.bootnodes.polkadotters.com/tcp/30534/wss/p2p/12D3KooWKr9San6KTM7REJ95cBaDoiciGcWnW8TTftEJgxGF5Ehb"
```

Best regards,

Petr, Polkadotters

Does the following: 

- Add a reference doc page named `frame_runtime_types`, which explains
what types like `RuntimeOrigin`, `RuntimeCall` etc are.
- On top of it, it adds a reference doc page called `frame_origin` which
explains a few important patterns that we use around origins
- And finally brushes up `#[frame::origin]` docs. 
- Updates the theme, sidebar and favicon to look like: 

<img width="1728" alt="Screenshot 2024-02-20 at 12 16 00"
src="https://github.com/paritytech/polkadot-sdk/assets/5588131/6d60a16b-2081-411b-8869-43b91920cca9">


All of this was inspired by
https://substrate.stackexchange.com/questions/10992/how-do-you-find-the-public-key-for-the-medium-spender-track-origin/10993

closes https://github.com/paritytech/polkadot-sdk-docs/issues/45
closes https://github.com/paritytech/polkadot-sdk-docs/issues/43
contributes / overlaps with
https://github.com/paritytech/polkadot-sdk/pull/2638 cc @liamaharon


deprecation companion:
https://github.com/substrate-developer-hub/substrate-docs/pull/2131
pba-content companion:
https://github.com/Polkadot-Blockchain-Academy/pba-content/pull/977

---------

Co-authored-by: Radha <[email protected]>
Co-authored-by: Sebastian Kunert <[email protected]>
Co-authored-by: Gonçalo Pestana <[email protected]>
Co-authored-by: Liam Aharon <[email protected]>

Related to https://github.com/paritytech/polkadot-sdk/issues/3475

When running `cargo test -p bridge-hub-rococo-runtime --features
runtime-benchmarks`, two of the Snowbridge benchmark tests fails. The
reason is that when the runtime-benchmarks feature is enabled, the
`NoopMessageProcessor` message processor is used. The Snowbridge tests
rely on the outbound messages to be processed using the message queue,
so that we can check the expected nonce and block digest logs.

This PR changes the conditional compilation to only use
`NoopMessageProcessor` when compiling the executable to run benchmarks
against, not when running tests.

---------

Co-authored-by: claravanstaden <Cats 4 life!>

Fix timeouts downloading the artifacts (e.g
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/5246040)
Thx!

---------

Co-authored-by: Bastian Köcher <[email protected]>

# Description

*Refactors `String::from_utf8` usage in the pallet benchmarking

Fixes #389

---------

Co-authored-by: command-bot <>

Changes:
- Add CI script to check that the `crate` names that are mentioned in
prdocs are valid.

We can extend it lateron to also validate the correct SemVer bumps as
introduced in https://github.com/paritytech/polkadot-sdk/pull/3441.

Example output:
```pre
$ python3 .github/scripts/check-prdoc.py Cargo.toml prdoc/*.prdoc

🔎 Reading workspace polkadot-sdk/Cargo.toml.
📦 Checking 36 prdocs against 494 crates.
✅ All prdocs are valid.
```

Note that not all old prdocs pass the check since crates have been
renamed:
```pre
$ python3 .github/scripts/check-prdoc.py Cargo.toml prdoc/**/*.prdoc

🔎 Reading workspace polkadot-sdk/Cargo.toml.
📦 Checking 186 prdocs against 494 crates.
❌ Some prdocs are invalid.
💥 prdoc/1.4.0/pr_1926.prdoc lists invalid crate: node-cli
💥 prdoc/1.4.0/pr_2086.prdoc lists invalid crate: xcm-executor
💥 prdoc/1.4.0/pr_2107.prdoc lists invalid crate: xcm
💥

 prdoc/1.6.0/pr_2684.prdoc lists invalid crate: xcm-builder

```

---------

Signed-off-by: Oliver Tale-Yazdi <[email protected]>

Tests run as part of the `test-linux-stable` jobs could hang as shown
[here](https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/5341393).
This PR adds a failsafe for such cases.

While investigating some pruning issues I found some room for
improvement in the notification pin handling.

**Problem:** It was not possible to define an upper limit on
notification pins. The block pinning cache has a limit, but only handles
bodies and justifications.

After this PR, bookkeeping for notifications is managed in the pinning
worker. A limit can be defined in the worker. If that limit is crossed,
blocks that were pinned for that notification are unpinned, which now
affects the state as well as bodies and justifications. The pinned
blocks cache still has a limit, but should never be hit.

closes #19

---------

Co-authored-by: Bastian Köcher <[email protected]>
Co-authored-by: André Silva <[email protected]>

Instead of only generating the error, we now generate the actual code
and the error. This generates in total less errors and helps the user to
identify the actual problem and not being confronted with tons of
errors.

with the deprecation of Rococo, Encointer needs a new staging
environment. Paseo will be Polkadot-focused and westend Kusama-focused,
so we propose to use Westend

## Problem
During the bumping of the `polkadot-fellows` repository to
`[email protected]`, I encountered a situation where the benchmarks
`teleport_assets` and `reserve_transfer_assets` in AssetHubKusama
started to fail. This issue arose due to a decreased ED balance for
AssetHubs introduced
[here](https://github.com/polkadot-fellows/runtimes/pull/158/files#diff-80668ff8e793b64f36a9a3ec512df5cbca4ad448c157a5d81abda1b15f35f1daR213),
and also because of a [missing CI
pipeline](https://github.com/polkadot-fellows/runtimes/issues/197) to
check the benchmarks, which went unnoticed.

These benchmarks expect the `caller` to have enough:
1. balance to transfer (BTT)
2. balance for paying delivery (BFPD).
 
So the initial balance was calculated as `ED * 100`, which seems
reasonable:
```
const ED_MULTIPLIER: u32 = 100;
let balance = existential_deposit.saturating_mul(ED_MULTIPLIER.into());`
```
The problem arises when the price for delivery is 100 times higher than
the existential deposit. In other words, when `ED * 100` does not cover
`BTT` + `BFPD`.

I check AHR/AHW/AHK/AHP and this problem has only AssetHubKusama
```
ED: 3333333
calculated price to parent delivery:  1031666634  (from xcm logs from the benchmark)
---

3333333 * 100 - BTT(3333333) - BFPD(1031666634) = −701666667
```
which results in the error;
```
2024-02-23 09:19:42 Unable to charge fee with error Module(ModuleError { index: 31, error: [17, 0, 0, 0], message: Some("FeesNotMet") })
Error: Input("Benchmark pallet_xcm::reserve_transfer_assets failed: FeesNotMet")
     
```

## Solution

The benchmarks `teleport_assets` and `reserve_transfer_assets` were
fixed by removing `ED * 100` and replacing it with `DeliveryHelper`
logic, which calculates the (almost real) price for delivery and sets it
along with the existential deposit as the initial balance for the
account used in the benchmark.


## TODO

- [ ] patch for 1.6 -
https://github.com/paritytech/polkadot-sdk/pull/3466
- [ ] patch for 1.7 -
https://github.com/paritytech/polkadot-sdk/pull/3465
- [ ] patch for 1.8 - TODO: PR

---------

Co-authored-by: Francisco Aguirre <[email protected]>

Add more debug logs to understand if statement-distribution is in a bad
state, should be useful for debugging
https://github.com/paritytech/polkadot-sdk/issues/3314 on production
networks.

Additionally, increase the number of parallel requests should make,
since I notice that requests take around 100ms on kusama, and the 5
parallel request was picked mostly random, no reason why we can do more
than that.

---------

Signed-off-by: Alexandru Gheorghe <[email protected]>
Co-authored-by: ordian <[email protected]>

from Westend and Rococo.

---------

Co-authored-by: eskimor <[email protected]>
Co-authored-by: command-bot <>

Changes the runtime hash algorithm used in
`resolve_state_version_from_wasm` from `DefaultHasher` to a
caller-provided one (usually `HashingFor<Block>`), to match the one used
elsewhere.

This fixes an issue where the runtime wasm is compiled 3 times when
starting the `tanssi-node` with `--dev`. With this fix, the runtime wasm
is only compiled 2 times. The other redundant compilation is caused by
the `GenesisConfigBuilderRuntimeCaller` struct, which ignores the
runtime cache.

---------

Co-authored-by: Bastian Köcher <[email protected]>

Fixes https://github.com/paritytech/polkadot-sdk/issues/3144

Builds on top of https://github.com/paritytech/polkadot-sdk/pull/3229

### Summary
Some preparations for Runtime to support elastic scaling, guarded by
config node features bit `FeatureIndex::ElasticScalingMVP`. This PR
introduces a per-candidate `CoreIndex` but does it in a hacky way to
avoid changing `CandidateCommitments`, `CandidateReceipts` primitives
and networking protocols.

#### Including `CoreIndex` in `BackedCandidate`
If the `ElasticScalingMVP` feature bit is enabled then
`BackedCandidate::validator_indices` is extended by 8 bits.
The value stored in these bits represents the assumed core index for the
candidate.

It is temporary solution which works by creating a mapping from
`BackedCandidate` to `CoreIndex` by assuming the `CoreIndex` can be
discovered by checking in which validator group the validator that
signed the statement is.

TODO:
- [x] fix tests
- [x] add new tests
- [x] Bump runtime API for Kusama, so we have that node features thing!
-> https://github.com/polkadot-fellows/runtimes/pull/194

---------

Signed-off-by: Andrei Sandu <[email protected]>
Signed-off-by: alindima <[email protected]>
Co-authored-by: alindima <[email protected]>

Related to https://github.com/paritytech/polkadot-sdk/issues/3400

Moving all bridges testing "framework" files under one folder in order
to be able to download the entire folder when we want to add tests in
other repos

No significant functional changes

# Runtime side for PoV Reclaim

## Implementation Overview
- Hostfunction to fetch the storage proof size has been added to the
PVF. It uses the size tracking recorder that was introduced in my
previous PR.
- Mechanisms to use the reclaim HostFunction have been introduced.
- 1. A SignedExtension that checks the node-reported proof size before
and after application of an extrinsic. Then it reclaims the difference.
- 2. A manual helper to make reclaiming easier when manual interaction
is required, for example in `on_idle` or other hooks.
- In order to utilize the manual reclaiming, I modified `WeightMeter` to
support the reduction of consumed weight, at least for storage proof
size.

## How to use
To enable the general functionality for a parachain:
1. Add the SignedExtension to your parachain runtime. 
2. Provide the HostFunction to the node
3. Enable proof recording during block import

## TODO
- [x] PRDoc

---------

Co-authored-by: Dmitry Markin <[email protected]>
Co-authored-by: Davide Galassi <[email protected]>
Co-authored-by: Bastian Köcher <[email protected]>