* extract common parts of relay loops: begin

* merge client impls

* backoff in exchange loop

* reconnect without clone

* patch audit findings #42

* extend msg signature for substrate relay

* signature verification test

* make proof dependet on call_dispatch crate

* silence clippy

* revert deny exception

* address code review

* since it's not really a proof, call it digest

* update weight-related parameters in relay

* asserts + docs

Co-authored-by: Hernando Castano <[email protected]>

* fixed messages count check

* explicit check of `messages_count` in the receive_messages_proof

* change messages_count to be u32

* Update modules/message-lane/src/lib.rs

Co-authored-by: Hernando Castano <[email protected]>

Co-authored-by: Hernando Castano <[email protected]>

* Move justification module to header-chain primitives crate

* Get justification module compiling in new location

* Get justification module tests compiling

* Use justification code from `header-chain` crate

Mostly compiles, having issues with std/test feature flags across crates.

* Move some code around

* Move justification tests to integration testing crate

* Add `test-utils` crate

* Remove tests and test-helper module from justification code

* Use `test-utils` in Substrate bridge pallet tests

* Remove `sp-keyring` related code from `pallet-substrate-bridge`

* Remove `helpers` module from `pallet-substrate-bridge`

* Add some documentation

* Add more documentation

* Fix typo

Co-authored-by: Tomasz Drwięga <[email protected]>

Co-authored-by: Tomasz Drwięga <[email protected]>

* estimate_message_delivery_and_dispatch_fee runtime API

* auto-determine message fees in relay

* remove fee argument from relay calls

* Fix import of weight contant

Co-authored-by: Hernando Castano <[email protected]>

* add messages count parameter to delivery transaction

* fix benchmarks compilation

* Add option to relay for sending transfers to Millau chain

* Endow derived accounts on Millau chain

* Update message generator entrypoint script to send transfers

* Use correct command when sending messages

* Send Root messages from Root origin on source chain

* Wrap calls from Root Origin in Sudo Call

* Allow Root to send messages without paying fees

* Use correct variable when sending messages to Rialto

* Print warning if no message type is provided to script.

* Add note mentioning that certain source origins aren't supported yet

* Use correct runtime when initializing header sync

* Remove option to send messages as Root

* Remove endowment of derived Root accounts

* Fix indentation.

Co-authored-by: Tomasz Drwięga <[email protected]>

* Update `sp-io` dependency

* Rename Trait to Config

* RustFmt

* Bump `sp-io` again

* Use new frame_system weight types in Rialto and Millau runtimes

* Update test Runtimes to use new weight types

* Bump `sp-io` again

* Update to not-the latest first.

* Update benchmarks.

* Another Trai.

* Move new weight types into runtime primitive crates

This allows us to check limits for extrinsics from other parts
of the codebase without pulling in the entire chain runtime.

* Remove leftover comments

* Move new functions to a better location

* Small formatting fixes

* Add actual documentation to new weight config types

* Decrease maximum block weight of Millau chain

* Decreease maximum block length of Millau chain

Co-authored-by: Tomasz Drwięga <[email protected]>

* limit messages size in delivery transaction

* docs

* Attempt at adding Cross-Chain Transfer Generator

* Add Transfer subcommand for sending messages to Rialto

* Add temp helper script for sending messages

* Remove Message and Lane Ids from Dispatch Event

* Increase transfer amount used by script

* Endow derived Dave account on Rialto with funds

* Update Message generator to send more types of messages

This commit first of all updates the script to use the new CLI
commands for sending messages. Second, it adds messages which are
sent from both Target and Source origins.

* Generate messages from Root origin

* Remove dbg! logs from relayer

* Log AccountId as well as HexId

* Remove Balances logs

* Add InstanceId and MessageId back to Dispatch Event

* Add InstanceId and MessageId types for Apps

* Add missing comment

* Document derived accounts as tests

* Move shared commands to variables

* Add example usage for send_message script

* Add docs to message variants

* Fix Clippy complaint

* limit maximal number of unconfirmed messages at inbound lane

* unrewarded_relayer_entries API

* change relay to support max unrewarded relayer entries

* Update modules/message-lane/src/inbound_lane.rs

Co-authored-by: Tomasz Drwięga <[email protected]>

* Update relays/messages-relay/src/message_lane_loop.rs

Co-authored-by: Hernando Castano <[email protected]>

* removed pub

Co-authored-by: Tomasz Drwięga <[email protected]>
Co-authored-by: Hernando Castano <[email protected]>

* kusama primitives + client

* polkadot primitives + client

* lost Chain definitions

* fix compilation and fmt

* Update primitives/runtime/src/lib.rs

Co-authored-by: Hernando Castano <[email protected]>

Co-authored-by: Hernando Castano <[email protected]>

* limit max number of messages in delivery tx

* support max-messages-in-delivery-tx in relayer

* clippy

* clippy

* Update modules/message-lane/src/lib.rs

Co-authored-by: Tomasz Drwięga <[email protected]>

Co-authored-by: Tomasz Drwięga <[email protected]>

* Update some docs

* Add derived account origin

* Add tests for derived origin

* Do a little bit of cleanup

* Change Origin type to use AccountIds instead of Public keys

* Update (most) tests to use new Origin types

* Remove redundant test

* Update `runtime-common` tests to use new Origin types

* Remove unused import

* Fix documentation around origin verification

* Update config types to use AccountIds in runtime

* Update Origin type used in message relay

* Use correct type when verifying message origin

* Make CallOrigin docs more consistent

* Use AccountIds instead of Public keys in Runtime types

* Introduce trait for converting AccountIds

* Bring back standalone function for deriving account IDs

* Remove AccountIdConverter configuration trait

* Remove old bridge_account_id derivation function

* Handle target ID decoding errors more gracefully

* Update message-lane to use new AccountId derivation

* Update merged code to use new Origin types

* Use explicit conversion between H256 and AccountIds

* Make relayer fund account a config option in `message-lane` pallet

* Add note about deriving the same account on different chains

* Fix test weight

* Use AccountId instead of Public key when signing Calls

* Semi-hardcode relayer fund address into Message Lane pallet

* fixed missing else

* really wake up when retry timeout is completed

* do not query weights if target nonce is unknown

* fix compilation

* generic SyncHeader type

* add panic condition to method description

* extract -> into_inner

* checked_sub + expect

* relay Rialto messages to Millau

* impl SubmitRialtoToMillauMessage

* fmt

* replace generic message lane APIs with chain-specific

* moved SubstrateHeadersSyncPipeline to headers_pipeline.rs

* substrate-specific message lane trait

* Update relays/substrate/src/messages_lane.rs

Co-authored-by: Hernando Castano <[email protected]>

Co-authored-by: Hernando Castano <[email protected]>

* use best block state to craft message relay transactions

* removed obsolete TODO

* Update relays/messages-relay/src/message_race_loop.rs

Co-authored-by: Hernando Castano <[email protected]>

Co-authored-by: Hernando Castano <[email protected]>

* Allow bridge pallet to return no finalized headers

* Update Runtime APIs to optionally return best finalized header

* Update relay to handle optional best finalized headers

* Fix Clippy lints

* Return a dummy header instead of an Option

* Remove Option from runtime Apis

* Remove support for handling optional finalized headers in relay

* fixed message that is signed by relay

* clippy

* limit messages in the batch by weight/count

* fixed components compilation

* reverted obsolete parts of #469

* implement generated_messages_weights

* actually use computed weight in message proof

* fmt and clippy

* fixed TODO

* clippy

* Update relays/messages-relay/src/message_race_loop.rs

Co-authored-by: Hernando Castano <[email protected]>

* add issue reference

* add assert message

* grumbles

* fmt

* reexport weight from bp-message-lane

Co-authored-by: Hernando Castano <[email protected]>
Co-authored-by: Hernando Castano <[email protected]>

* Expose two nodes publicly through brucke.link

* Use flags for GNU `sed` instead of BSD `sed`

* Update Substrate relay entrypoint scripts to initialize bridge

* Add Rialto to Millau relay to Compose deployment

* Stop initializing Rialto chain through chainspec

* Include logging for Substrate pallet

* Make Rialto to Millau entrypoint executable

* Use YAML references for relay components

* Use published Substrate Relay image

* Relay messages from Millau to Rialto

* Use Bob nodes to serve message lane

* Fix some port number issues for PoA-Rialto deployment

* Stop directly referencing `environment` anchor in nodes

* Add probable cause to relayer error message

* Edit monitoring config file in-place

* Add some sleep time between bridge init call and starting relays

* Expose grafana.

* Use Root key as bridge pallet owner

In our case that's going to be Alice since she's Root for our Dev
and Local chains.

Co-authored-by: Tomasz Drwięga <[email protected]>

* initialize substrate bridge from relay

* is_halted: false

* initialize using su instead of owner

* Fix wording in comments

Co-authored-by: Hernando Castano <[email protected]>

* fixed client used in headers maintain

* fmt

* Millau messages -> Rialto relay

* prepare for custom race strategy of delivery race

* custom strategy for delivery race

* update TODOs

* add reference to issue 457

* impl reconnect

* clippy

* fix check in test

* fmt

* removed obsolete TODO

* fixed another TODOs

* fmt

* use MAX_UNCONFIRMED_MESSAGES_AT_INBOUND_LANE const from primitives

* Update relays/messages-relay/src/message_lane_loop.rs

Co-authored-by: Hernando Castano <[email protected]>

* added SubstrateMessagesProof typedef

* fix test

* removed comment

* additional_proof_required -> ProofParameters

* typo

* multiline literal

* clippy

* fix typo

* and_then -> await

* update_source_latest_confirmed_nonce

* Update relays/messages-relay/src/message_race_delivery.rs

Co-authored-by: Tomasz Drwięga <[email protected]>

Co-authored-by: Hernando Castano <[email protected]>
Co-authored-by: Tomasz Drwięga <[email protected]>

* Rialto -> Millau headers relay

* removed more constraints

* removed file from other PR

* Update primitives/rialto/src/lib.rs

Co-authored-by: Hernando Castano <[email protected]>

Co-authored-by: Hernando Castano <[email protected]>

* substrate-relay::SubmitMillauToRialtoMessage

* typo

* Update relays/substrate/src/cli.rs

Co-authored-by: Hernando Castano <[email protected]>

Co-authored-by: Hernando Castano <[email protected]>

* Support multiple "best headers" from different forks

* Update the name of a test

* Add note about multiple scheduled changes

* Disallow multiple scheduled authority set changes

* Return multiple best headers from Runtime APIs

* Remove invalid test write-up

* Add some sketch-ups of test scenarios

* Clean up test scenarios

* Add module for testing forks

* Write headers to storage

* Add way to check expected outcome for header imports

* Add support for importing finality proofs

* Support importing headers which schedule changes

* Write out test scenario using new framework

* Map authority set changes across forks

Gets all the tests in the `forks` module passing

* Remove basic tests

These were used when working on the initial test helper

* Prevent multiple pending set changes on the same fork

* Remove old test which allowed imports past unfinalized header

* Ignore failing test (for now)

* Rewrite `if` comparison using `match` and `cmp`

Fixes Clippy warning: `comparison_chain`

* Add helper for writing test headers with default characteristics

* Fix test that checked authority set updates

* Make note about importing headers on different unfinalized fork

* Perform some cleanup on the fork module

* Fix Clippy complaints

* Provide list of unfinalized headers to Runtime APIs

* Add proofs to expect() calls

* Make tests the focus of the forks module

* Allow specific errors to be checked in fork tests

* Remove unused method

* Replace unreachable() statement with expect()

* Rename storage `unfinalized_headers() `to make its purpose more clear

* Update Runtime API name in relayer to match pallet

* Commit `unfinalized_headers` changes I forgot to add

* Rename ChainTipHeight to BestHeight

* Make schedule_next_set_change require a mutable reference

* Remove check for key when enacting authority set

We only expect to take the happy-path in the pallet anyways, so this check
to save ourselves the time spent decoding the entry isn't really used.

* Clear justification set when writing headers to storage

* Clarify why we only allow one set change per fork

* Change best_headers() to return HeaderIDs

Prevents us from returning full headers (which are more expensive to
get from storage) since we only care about header IDs (number, hash)
anyways.

* Fix Clippy complaint

* Make note about equivocations

* Use HeaderIds when returning incomplete headers

This change stops returning full headers which are more expensive
to get from storage than header Ids (number, hash) are. Clients likely
don't need the full header anyways which is why this change is fine.

* Introduce HeaderId type to reduce type complexity

* Add signal hash to storage during genesis config

* Return error instead of expect()-ing

* Fix Clippy lint about `ok_or` fn call

* Rename `forks` module to indicate that it's for testing

* Use `const` for `expect()` proofs

* Remove check that key exists before `kill`-ing value

Co-authored-by: Svyatoslav Nikolsky <[email protected]>

* maintain MillauHeadersToRialto sync by subscribing to Millau justifications

* more tracing in maintain

* Update relays/substrate/src/headers_maintain.rs

Co-authored-by: Hernando Castano <[email protected]>

* Update relays/substrate/src/headers_maintain.rs

Co-authored-by: Hernando Castano <[email protected]>

* -Please

* -TODO

* revert raise recursion limit

* updated comment

Co-authored-by: Hernando Castano <[email protected]>

* working-millau-to-rialto-relay

* fix Millau state root

* properly fix synced+incomplete headers for sub2sub

* removed wrong TODO

* fmt + clippy

* Update relays/headers-relay/src/headers.rs

Co-authored-by: Hernando Castano <[email protected]>

* moved SubstrateTransactionMaker definition

* removed M from phantomdata

* removed prune_synced_children

* methods names as consts

Co-authored-by: Hernando Castano <[email protected]>