Process finality proofs in solidity PoA -> Substrate contract (#69)

* solidity contract

* continue

* upd

* cargo update

* fixes

* ehtereum_headers -> headers

* extracted some common stuff

* ethereum_sync.rs -> sync.rs

* make sync generic

* continue extracting

* continue

* add eth-contract argument

* continue

* some fixes

* contract v2

* continue

* more fixes

* more fixes

* deal with duplicated params

* removed multiple call_rpc variants

* bail_on_error!()

* fn submit_ethereum_transaction

* more fixes

* cargo fmt --all

* fix

* bail_on_arg_error!()

* fix

* fix

* remove async_extra stuff

* start work on finality builtin

remove async_extra stuff

continue

continue

local testnet (Alice + Bob) for node

* added TODO

* substrate-bridge.json -> substrate-bridge-abi.json

* get rid of substrate transactions hashes

* get rid of ethereum transactions hashes

* extracted contract bytecode to separate file

* cargo fmt --all

* avoid duplicate import in contracts

* removed Default::default()

* swapped configurations for sub2eth && eth2sub

* fix compilation

* do not double gas limit when submitting Substrate headers

* fix finality storage

* at least 1 validator required

* shift_session_manager_works

* cargo fmt --all

* solidity contract removed

* consts

* extracted solc compilation details to separate file

* removed (obsolete in future Vec<u8> justification)

* fixed cli option description

* fix typos

* fix grumble

* extracted constants

* log decoded header

* new substrate version + actually verify justification

* intermediate cargo fmt --all

* comments

* disable completion data resubmission

* increased timeouts + _MS -> Duration

* forget completion data after submission

* builtin tests

* headers tests

* cargo fmt --all

* update contract

* Update relays/ethereum/src/ethereum_sync_loop.rs

Co-authored-by: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* Update relays/ethereum/src/ethereum_sync_loop.rs

Co-authored-by: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* added docs

* OwnedFutureOutput

* more docs fixes

* cargo fmt --all

* encode headers

* consts + docs

* aliases again

* cargo fmt --all

* Update relays/ethereum/src/ethereum_sync_loop.rs

Co-authored-by: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* Update relays/ethereum/src/ethereum_sync_loop.rs

Co-authored-by: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* Use Duration::from_secs() instead of from_millis()

* grumbles

* Update relays/ethereum/src/headers.rs

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>

* Update relays/ethereum/src/headers.rs

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>

* incomplete_headers_are_still_incomplete_after_advance

* add hex-encoded headers to substrate_header_without_signal_parsed

* cargo fmt --all

* Update relays/ethereum/src/sync_loop.rs

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>

* Update relays/ethereum/src/headers.rs

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>

* Update relays/ethereum/src/headers.rs

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>

* Update relays/ethereum/src/headers.rs

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>

* Update relays/ethereum/src/headers.rs

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>

* Update relays/ethereum/src/headers.rs

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>

* Update relays/ethereum/src/headers.rs

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>

* Update relays/ethereum/src/headers.rs

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>

* added comments on Extra and Completion

Co-authored-by: Tomasz Drwięga <tomusdrw@users.noreply.github.com>
Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>

bridges/relays/ethereum/res/substrate-bridge-abi.json

@@ -79,19 +79,18 @@
 		"type": "function"
 	},
 	{
-		"inputs": [
-			{
-				"internalType": "bytes32",
-				"name": "headerHash",
-				"type": "bytes32"
-			}
-		],
-		"name": "isFinalityProofRequired",
+		"inputs": [],
+		"name": "incompleteHeaders",
 		"outputs": [
 			{
-				"internalType": "bool",
+				"internalType": "uint256[]",
 				"name": "",
-				"type": "bool"
+				"type": "uint256[]"
+			},
+			{
+				"internalType": "bytes32[]",
+				"name": "",
+				"type": "bytes32[]"
 			}
 		],
 		"stateMutability": "view",

bridges/relays/ethereum/res/substrate-bridge-metadata.txt

@@ -1,5 +1,5 @@
-Last Change Date: 2020-04-28
+Last Change Date: 2020-05-01
 Solc version: 0.6.6+commit.6c089d02
-Source hash (keccak256): 0xdc46aff04e37129265223e507d17f1407a70cb1ecea3230e1eaa77a17586724d
-Source gist: https://gist.github.com/svyatonik/876b388f9507a8de242cb2db9547c4f0
+Source hash (keccak256): 0x36403636ad41082ca6c937c60ab06446cd9ef7036c178fa2f04d7c8286544d39
+Source gist: https://github.com/svyatonik/substrate-bridge-sol/blob/8b54f5f648f8685fecd52b7af1deb277922b0fc3/substrate-bridge.sol
 Compiler flags used (command to produce the file): `docker run -i ethereum/solc:0.6.6 --optimize --bin - < substrate-bridge.sol`