serai/coordinator/Cargo.toml

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[package]
name = "serai-coordinator"
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version = "0.1.0"
description = "Serai coordinator to prepare batches and sign transactions"
license = "AGPL-3.0-only"
repository = "https://github.com/serai-dex/serai/tree/develop/coordinator"
authors = ["Luke Parker <lukeparker5132@gmail.com>"]
keywords = []
edition = "2021"
publish = false
[package.metadata.docs.rs]
all-features = true
rustdoc-args = ["--cfg", "docsrs"]
[dependencies]
async-trait = { version = "0.1", default-features = false }
zeroize = { version = "^1.5", default-features = false, features = ["std"] }
rand_core = { version = "0.6", default-features = false, features = ["std"] }
rand_chacha = { version = "0.3", default-features = false, features = ["std"] }
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blake2 = { version = "0.10", default-features = false, features = ["std"] }
transcript = { package = "flexible-transcript", path = "../crypto/transcript", default-features = false, features = ["std", "recommended"] }
ciphersuite = { path = "../crypto/ciphersuite", default-features = false, features = ["std"] }
schnorr = { package = "schnorr-signatures", path = "../crypto/schnorr", default-features = false, features = ["std"] }
frost = { package = "modular-frost", path = "../crypto/frost" }
frost-schnorrkel = { path = "../crypto/schnorrkel" }
scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["std", "derive"] }
serai-db = { path = "../common/db", features = ["rocksdb"] }
serai-env = { path = "../common/env" }
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processor-messages = { package = "serai-processor-messages", path = "../processor/messages" }
message-queue = { package = "serai-message-queue", path = "../message-queue" }
tributary = { package = "tributary-chain", path = "./tributary" }
Add a cosigning protocol to ensure finalizations are unique (#433) * Add a function to deterministically decide which Serai blocks should be co-signed Has a 5 minute latency between co-signs, also used as the maximal latency before a co-sign is started. * Get all active tributaries we're in at a specific block * Add and route CosignSubstrateBlock, a new provided TX * Split queued cosigns per network * Rename BatchSignId to SubstrateSignId * Add SubstrateSignableId, a meta-type for either Batch or Block, and modularize around it * Handle the CosignSubstrateBlock provided TX * Revert substrate_signer.rs to develop (and patch to still work) Due to SubstrateSigner moving when the prior multisig closes, yet cosigning occurring with the most recent key, a single SubstrateSigner can be reused. We could manage multiple SubstrateSigners, yet considering the much lower specifications for cosigning, I'd rather treat it distinctly. * Route cosigning through the processor * Add note to rename SubstrateSigner post-PR I don't want to do so now in order to preserve the diff's clarity. * Implement cosign evaluation into the coordinator * Get tests to compile * Bug fixes, mark blocks without cosigners available as cosigned * Correct the ID Batch preprocesses are saved under, add log statements * Create a dedicated function to handle cosigns * Correct the flow around Batch verification/queueing Verifying `Batch`s could stall when a `Batch` was signed before its predecessors/before the block it's contained in was cosigned (the latter being inevitable as we can't sign a block containing a signed batch before signing the batch). Now, Batch verification happens on a distinct async task in order to not block the handling of processor messages. This task is the sole caller of verify in order to ensure last_verified_batch isn't unexpectedly mutated. When the processor message handler needs to access it, or needs to queue a Batch, it associates the DB TXN with a lock preventing the other task from doing so. This lock, as currently implemented, is a poor and inefficient design. It should be modified to the pattern used for cosign management. Additionally, a new primitive of a DB-backed channel may be immensely valuable. Fixes a standing potential deadlock and a deadlock introduced with the cosigning protocol. * Working full-stack tests After the last commit, this only required extending a timeout. * Replace "co-sign" with "cosign" to make finding text easier * Update the coordinator tests to support cosigning * Inline prior_batch calculation to prevent panic on rotation Noticed when doing a final review of the branch.
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sp-application-crypto = { git = "https://github.com/serai-dex/substrate", default-features = false, features = ["std"] }
serai-client = { path = "../substrate/client", default-features = false, features = ["serai"] }
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hex = { version = "0.4", default-features = false, features = ["std"] }
bincode = { version = "1", default-features = false }
serde = "1"
serde_json = { version = "1", default-features = false, features = ["std"] }
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log = { version = "0.4", default-features = false, features = ["std"] }
env_logger = { version = "0.10", default-features = false, features = ["humantime"] }
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futures = { version = "0.3", default-features = false, features = ["std"] }
tokio = { version = "1", default-features = false, features = ["rt-multi-thread", "sync", "time", "macros"] }
libp2p = { version = "0.52", default-features = false, features = ["tokio", "tcp", "noise", "yamux", "gossipsub", "mdns", "macros"] }
[dev-dependencies]
futures = { version = "0.3", default-features = false, features = ["std"] }
tributary = { package = "tributary-chain", path = "./tributary", features = ["tests"] }
sp-application-crypto = { git = "https://github.com/serai-dex/substrate", default-features = false, features = ["std"] }
sp-runtime = { git = "https://github.com/serai-dex/substrate", default-features = false, features = ["std"] }