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feat(traverse): Introduce time helpers (#234)

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Santiago Carmuega 2023-03-13 22:55:44 +01:00 • committed by GitHub
parent c1446ebea5
commit 7b3708ac46
7 changed files with 250 additions and 50 deletions
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2
pallas-upstream/src/api.rs
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@ -1,5 +1,3 @@
pub use crate::wellknown as chains;
pub use crate::cursor;
pub mod n2n {

1
pallas-upstream/src/lib.rs
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@ -4,7 +4,6 @@ pub(crate) mod framework;
pub(crate) mod plexer;
pub mod cursor;
pub mod wellknown;
mod api;

125
pallas-upstream/src/wellknown.rs
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@ -1,125 +0,0 @@
use serde::{Deserialize, Serialize};
use pallas_miniprotocols::{
MAINNET_MAGIC,
TESTNET_MAGIC,
// PREVIEW_MAGIC, PRE_PRODUCTION_MAGIC,
};
use crate::framework::*;
// TODO: use from pallas once available
pub const PRE_PRODUCTION_MAGIC: u64 = 1;
pub const PREVIEW_MAGIC: u64 = 2;
/// Well-known information about specific networks
#[derive(Serialize, Deserialize, Debug, Clone)]
pub struct WellKnownChainInfo {
pub magic: u64,
pub byron_epoch_length: u32,
pub byron_slot_length: u32,
pub byron_known_slot: u64,
pub byron_known_hash: String,
pub byron_known_time: u64,
pub shelley_epoch_length: u32,
pub shelley_slot_length: u32,
pub shelley_known_slot: u64,
pub shelley_known_hash: String,
pub shelley_known_time: u64,
}
impl WellKnownChainInfo {
/// Hardcoded values for mainnet
pub fn mainnet() -> Self {
WellKnownChainInfo {
magic: MAINNET_MAGIC,
byron_epoch_length: 432000,
byron_slot_length: 20,
byron_known_slot: 0,
byron_known_time: 1506203091,
byron_known_hash: "f0f7892b5c333cffc4b3c4344de48af4cc63f55e44936196f365a9ef2244134f"
.to_string(),
shelley_epoch_length: 432000,
shelley_slot_length: 1,
shelley_known_slot: 4492800,
shelley_known_hash: "aa83acbf5904c0edfe4d79b3689d3d00fcfc553cf360fd2229b98d464c28e9de"
.to_string(),
shelley_known_time: 1596059091,
}
}
/// Hardcoded values for testnet
pub fn testnet() -> Self {
WellKnownChainInfo {
magic: TESTNET_MAGIC,
byron_epoch_length: 432000,
byron_slot_length: 20,
byron_known_slot: 0,
byron_known_time: 1564010416,
byron_known_hash: "8f8602837f7c6f8b8867dd1cbc1842cf51a27eaed2c70ef48325d00f8efb320f"
.to_string(),
shelley_epoch_length: 432000,
shelley_slot_length: 1,
shelley_known_slot: 1598400,
shelley_known_hash: "02b1c561715da9e540411123a6135ee319b02f60b9a11a603d3305556c04329f"
.to_string(),
shelley_known_time: 1595967616,
}
}
pub fn preview() -> Self {
WellKnownChainInfo {
magic: PREVIEW_MAGIC,
byron_epoch_length: 432000,
byron_slot_length: 20,
byron_known_slot: 0,
byron_known_hash: "".to_string(),
byron_known_time: 1660003200,
shelley_epoch_length: 432000,
shelley_slot_length: 1,
shelley_known_slot: 25260,
shelley_known_hash: "cac921895ef5f2e85f7e6e6b51b663ab81b3605cd47d6b6d66e8e785e5c65011"
.to_string(),
shelley_known_time: 1660003200,
}
}
/// Hardcoded values for the "pre-prod" testnet
pub fn preprod() -> Self {
WellKnownChainInfo {
magic: PRE_PRODUCTION_MAGIC,
byron_epoch_length: 432000,
byron_slot_length: 20,
byron_known_slot: 0,
byron_known_hash: "9ad7ff320c9cf74e0f5ee78d22a85ce42bb0a487d0506bf60cfb5a91ea4497d2"
.to_string(),
byron_known_time: 1654041600,
shelley_epoch_length: 432000,
shelley_slot_length: 1,
shelley_known_slot: 86400,
shelley_known_hash: "c4a1595c5cc7a31eda9e544986fe9387af4e3491afe0ca9a80714f01951bbd5c"
.to_string(),
shelley_known_time: 1654041600,
}
}
/// Uses the value of the magic to return either mainnet or testnet
/// hardcoded values.
pub fn try_from_magic(magic: u64) -> Result<WellKnownChainInfo, Error> {
match magic {
MAINNET_MAGIC => Ok(Self::mainnet()),
TESTNET_MAGIC => Ok(Self::testnet()),
PREVIEW_MAGIC => Ok(Self::preview()),
PRE_PRODUCTION_MAGIC => Ok(Self::preprod()),
_ => Err(Error::message(
"can't infer well-known chain from specified magic",
)),
}
}
}
impl Default for WellKnownChainInfo {
fn default() -> Self {
Self::mainnet()
}
}