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https://github.com/pezkuwichain/pezkuwi-subxt.git
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Aaro Altonen
80616f6d03
[litep2p](https://github.com/altonen/litep2p) is a libp2p-compatible P2P networking library. It supports all of the features of `rust-libp2p` that are currently being utilized by Polkadot SDK. Compared to `rust-libp2p`, `litep2p` has a quite different architecture which is why the new `litep2p` network backend is only able to use a little of the existing code in `sc-network`. The design has been mainly influenced by how we'd wish to structure our networking-related code in Polkadot SDK: independent higher-levels protocols directly communicating with the network over links that support bidirectional backpressure. A good example would be `NotificationHandle`/`RequestResponseHandle` abstractions which allow, e.g., `SyncingEngine` to directly communicate with peers to announce/request blocks. I've tried running `polkadot --network-backend litep2p` with a few different peer configurations and there is a noticeable reduction in networking CPU usage. For high load (`--out-peers 200`), networking CPU usage goes down from ~110% to ~30% (80 pp) and for normal load (`--out-peers 40`), the usage goes down from ~55% to ~18% (37 pp). These should not be taken as final numbers because: a) there are still some low-hanging optimization fruits, such as enabling [receive window auto-tuning](https://github.com/libp2p/rust-yamux/pull/176), integrating `Peerset` more closely with `litep2p` or improving memory usage of the WebSocket transport b) fixing bugs/instabilities that incorrectly cause `litep2p` to do less work will increase the networking CPU usage c) verification in a more diverse set of tests/conditions is needed Nevertheless, these numbers should give an early estimate for CPU usage of the new networking backend. This PR consists of three separate changes: * introduce a generic `PeerId` (wrapper around `Multihash`) so that we don't have use `NetworkService::PeerId` in every part of the code that uses a `PeerId` * introduce `NetworkBackend` trait, implement it for the libp2p network stack and make Polkadot SDK generic over `NetworkBackend` * implement `NetworkBackend` for litep2p The new library should be considered experimental which is why `rust-libp2p` will remain as the default option for the time being. This PR currently depends on the master branch of `litep2p` but I'll cut a new release for the library once all review comments have been addresses. --------- Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> Co-authored-by: Dmitry Markin <dmitry@markin.tech> Co-authored-by: Alexandru Vasile <60601340+lexnv@users.noreply.github.com> Co-authored-by: Alexandru Vasile <alexandru.vasile@parity.io>
119 lines
7.5 KiB
TOML
119 lines
7.5 KiB
TOML
[licenses]
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# The lint level for crates which do not have a detectable license
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unlicensed = "deny"
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# List of explicitly allowed licenses
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# See https://spdx.org/licenses/ for list of possible licenses
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# [possible values: any SPDX 3.11 short identifier (+ optional exception)].
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allow = [
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"MPL-2.0",
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]
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# List of explicitly disallowed licenses
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# See https://spdx.org/licenses/ for list of possible licenses
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# [possible values: any SPDX 3.11 short identifier (+ optional exception)].
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deny = [
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]
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# Lint level for licenses considered copyleft
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copyleft = "deny"
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# Blanket approval or denial for OSI-approved or FSF Free/Libre licenses
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# * both - The license will be approved if it is both OSI-approved *AND* FSF
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# * either - The license will be approved if it is either OSI-approved *OR* FSF
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# * osi-only - The license will be approved if is OSI-approved *AND NOT* FSF
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# * fsf-only - The license will be approved if is FSF *AND NOT* OSI-approved
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# * neither - This predicate is ignored and the default lint level is used
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allow-osi-fsf-free = "either"
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# Lint level used when no other predicates are matched
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# 1. License isn't in the allow or deny lists
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# 2. License isn't copyleft
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# 3. License isn't OSI/FSF, or allow-osi-fsf-free = "neither"
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default = "deny"
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# The confidence threshold for detecting a license from license text.
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# The higher the value, the more closely the license text must be to the
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# canonical license text of a valid SPDX license file.
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# [possible values: any between 0.0 and 1.0].
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confidence-threshold = 0.8
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# Allow 1 or more licenses on a per-crate basis, so that particular licenses
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# aren't accepted for every possible crate as with the normal allow list
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exceptions = [
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# Each entry is the crate and version constraint, and its specific allow list
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "chain-spec-builder" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "mmr-gadget" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "node-bench" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "node-inspect" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "node-template-release" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "node-testing" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-authority-discovery" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-basic-authorship" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-block-builder" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-chain-spec" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-chain-spec-derive" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-cli" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-client-api" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-client-db" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-consensus" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-consensus-aura" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-consensus-babe" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-consensus-babe-rpc" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-consensus-beefy" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-consensus-beefy-rpc" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-consensus-epochs" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-consensus-grandpa" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-consensus-grandpa-rpc" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-consensus-manual-seal" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-consensus-pow" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-consensus-slots" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-executor" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-executor-common" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-executor-wasmi" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-executor-wasmtime" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-informant" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-keystore" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-mixnet" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-network" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-network-common" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-network-gossip" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-network-light" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-network-statement" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-network-sync" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-network-test" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-network-transactions" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-offchain" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-peerset" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-proposer-metrics" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-rpc" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-rpc-api" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-rpc-server" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-rpc-spec-v2" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-runtime-test" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-service" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-service-test" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-state-db" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-statement-store" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-storage-monitor" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-sysinfo" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-telemetry" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-tracing" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-transaction-pool" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "sc-transaction-pool-api" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "staging-node-cli" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "subkey" },
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{ allow = ["GPL-3.0 WITH Classpath-exception-2.0"], name = "substrate" },
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]
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# Some crates don't have (easily) machine readable licensing information,
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# adding a clarification entry for it allows you to manually specify the
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# licensing information
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[[licenses.clarify]]
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# The name of the crate the clarification applies to
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name = "ring"
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# The SPDX expression for the license requirements of the crate
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expression = "MIT AND ISC AND OpenSSL"
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# One or more files in the crate's source used as the "source of truth" for
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# the license expression. If the contents match, the clarification will be used
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# when running the license check, otherwise the clarification will be ignored
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# and the crate will be checked normally, which may produce warnings or errors
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# depending on the rest of your configuration
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license-files = [
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# Each entry is a crate relative path, and the (opaque) hash of its contents
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{ path = "LICENSE", hash = 0xbd0eed23 },
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]
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