mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-27 03:27:58 +00:00
Aaro Altonen
e71c484d5b
This commit introduces a new concept called `NotificationService` which allows Polkadot protocols to communicate with the underlying notification protocol implementation directly, without routing events through `NetworkWorker`. This implies that each protocol has its own service which it uses to communicate with remote peers and that each `NotificationService` is unique with respect to the underlying notification protocol, meaning `NotificationService` for the transaction protocol can only be used to send and receive transaction-related notifications. The `NotificationService` concept introduces two additional benefits: * allow protocols to start using custom handshakes * allow protocols to accept/reject inbound peers Previously the validation of inbound connections was solely the responsibility of `ProtocolController`. This caused issues with light peers and `SyncingEngine` as `ProtocolController` would accept more peers than `SyncingEngine` could accept which caused peers to have differing views of their own states. `SyncingEngine` would reject excess peers but these rejections were not properly communicated to those peers causing them to assume that they were accepted. With `NotificationService`, the local handshake is not sent to remote peer if peer is rejected which allows it to detect that it was rejected. This commit also deprecates the use of `NetworkEventStream` for all notification-related events and going forward only DHT events are provided through `NetworkEventStream`. If protocols wish to follow each other's events, they must introduce additional abtractions, as is done for GRANDPA and transactions protocols by following the syncing protocol through `SyncEventStream`. Fixes https://github.com/paritytech/polkadot-sdk/issues/512 Fixes https://github.com/paritytech/polkadot-sdk/issues/514 Fixes https://github.com/paritytech/polkadot-sdk/issues/515 Fixes https://github.com/paritytech/polkadot-sdk/issues/554 Fixes https://github.com/paritytech/polkadot-sdk/issues/556 --- These changes are transferred from https://github.com/paritytech/substrate/pull/14197 but there are no functional changes compared to that PR --------- Co-authored-by: Dmitry Markin <dmitry@markin.tech> Co-authored-by: Alexandru Vasile <60601340+lexnv@users.noreply.github.com>
80 lines
1.7 KiB
WebAssembly Text Format
80 lines
1.7 KiB
WebAssembly Text Format
(module
|
|
(import "seal0" "seal_set_storage" (func $seal_set_storage (param i32 i32 i32)))
|
|
(import "seal0" "seal_caller" (func $seal_caller (param i32 i32)))
|
|
(import "seal0" "seal_value_transferred" (func $seal_value_transferred (param i32 i32)))
|
|
(import "env" "memory" (memory 1 1))
|
|
|
|
;; [0, 32) storage key
|
|
(data (i32.const 0) "\01")
|
|
|
|
;; [32, 64) buffer for transferred value
|
|
|
|
;; [64, 96) size of the buffer for transferred value
|
|
(data (i32.const 64) "\20")
|
|
|
|
;; [96, 128) buffer for the caller
|
|
|
|
;; [128, 160) size of the buffer for caller
|
|
(data (i32.const 128) "\20")
|
|
|
|
(func $assert (param i32)
|
|
(block $ok
|
|
(br_if $ok
|
|
(local.get 0)
|
|
)
|
|
(unreachable)
|
|
)
|
|
)
|
|
|
|
(func (export "call")
|
|
;; place a value in storage
|
|
(call $seal_set_storage
|
|
(i32.const 0) ;; Pointer to storage key
|
|
(i32.const 0) ;; Pointer to value
|
|
(i32.const 32) ;; Size of value
|
|
)
|
|
|
|
;; This stores the value transferred in the buffer
|
|
(call $seal_value_transferred (i32.const 32) (i32.const 64))
|
|
|
|
;; assert len == 8
|
|
(call $assert
|
|
(i32.eq
|
|
(i32.load (i32.const 64))
|
|
(i32.const 8)
|
|
)
|
|
)
|
|
|
|
;; assert that contents of the buffer is equal to the value
|
|
;; passed to the `caller` contract: 1337
|
|
(call $assert
|
|
(i64.eq
|
|
(i64.load (i32.const 32))
|
|
(i64.const 1337)
|
|
)
|
|
)
|
|
|
|
;; fill the buffer with the caller.
|
|
(call $seal_caller (i32.const 96) (i32.const 128))
|
|
|
|
;; assert len == 32
|
|
(call $assert
|
|
(i32.eq
|
|
(i32.load (i32.const 128))
|
|
(i32.const 32)
|
|
)
|
|
)
|
|
|
|
;; assert that the first 64 byte are the beginning of "ALICE",
|
|
;; who is the caller of the `caller` contract
|
|
(call $assert
|
|
(i64.eq
|
|
(i64.load (i32.const 96))
|
|
(i64.const 0x0101010101010101)
|
|
)
|
|
)
|
|
)
|
|
|
|
(func (export "deploy"))
|
|
)
|