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https://github.com/logos-blockchain/lez-programs.git
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3285d5787e
Add CurrentTickAccount — an oracle-owned PDA (one per price source) that holds the latest raw tick written by the price source and a timestamp. The price source calls UpdateCurrentTick after each price-changing operation; anyone can then call RecordTick (upcoming) to advance the PriceObservations accumulator without requiring the price source to be present. PDA is derived from price_source_id only (no window) since a single current tick serves all time windows. Add price_to_tick(price: u128) -> i32 to twap_oracle_core: isqrt(price << 128) -> sqrtPriceX96 -> get_tick_at_sqrt_ratio. The sqrtPriceX96 is clamped to >= MIN_SQRT_RATIO so a zero/dust price maps to MIN_TICK rather than erroring. Add a pure-integer integer_sqrt(U256) (bit-by-bit, no floating point): ruint's root is gated behind its std feature and seeds with f64, neither available in the guest. Uses wrapping_shr for the digit loop (checked_shr rejects the intended lossy shifts). Pull in uniswap_v3_math (for get_tick_at_sqrt_ratio) and alloy-primitives (U256), with ruint pinned to =1.17.0 — 1.18 raised its MSRV to rustc 1.90, above the risc0 guest toolchain's 1.88.
238 lines
4.6 KiB
JSON
238 lines
4.6 KiB
JSON
{
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"version": "0.1.0",
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"name": "twap_oracle",
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"instructions": [
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{
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"name": "create_price_observations",
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"accounts": [
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{
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"name": "price_observations",
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"writable": false,
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"signer": false,
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"init": false
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},
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{
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"name": "price_source",
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"writable": false,
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"signer": false,
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"init": false
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},
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{
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"name": "clock",
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"writable": false,
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"signer": false,
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"init": false
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}
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],
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"args": [
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{
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"name": "initial_tick",
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"type": "i32"
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},
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{
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"name": "window_duration",
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"type": "u64"
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}
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]
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},
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{
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"name": "create_oracle_price_account",
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"accounts": [
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{
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"name": "oracle_price_account",
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"writable": false,
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"signer": false,
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"init": false
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},
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{
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"name": "price_source",
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"writable": false,
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"signer": false,
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"init": false
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},
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{
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"name": "clock",
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"writable": false,
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"signer": false,
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"init": false
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}
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],
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"args": [
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{
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"name": "base_asset",
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"type": "account_id"
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},
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{
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"name": "quote_asset",
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"type": "account_id"
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},
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{
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"name": "initial_price",
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"type": "u128"
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},
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{
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"name": "window_duration",
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"type": "u64"
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}
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]
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},
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{
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"name": "create_current_tick_account",
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"accounts": [
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{
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"name": "current_tick_account",
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"writable": false,
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"signer": false,
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"init": false
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},
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{
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"name": "price_source",
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"writable": false,
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"signer": false,
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"init": false
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},
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{
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"name": "clock",
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"writable": false,
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"signer": false,
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"init": false
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}
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],
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"args": [
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{
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"name": "initial_price",
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"type": "u128"
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}
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]
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},
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{
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"name": "update_current_tick",
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"accounts": [
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{
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"name": "current_tick_account",
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"writable": false,
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"signer": false,
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"init": false
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},
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{
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"name": "price_source",
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"writable": false,
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"signer": false,
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"init": false
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},
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{
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"name": "clock",
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"writable": false,
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"signer": false,
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"init": false
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}
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],
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"args": [
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{
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"name": "price",
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"type": "u128"
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}
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]
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}
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],
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"accounts": [
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{
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"name": "PriceObservations",
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"type": {
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"kind": "struct",
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"fields": [
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{
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"name": "price_source_id",
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"type": "account_id"
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},
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{
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"name": "write_index",
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"type": "u32"
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},
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{
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"name": "total_entries",
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"type": "u64"
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},
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{
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"name": "last_recorded_tick",
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"type": "i32"
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},
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{
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"name": "entries",
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"type": {
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"vec": {
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"defined": "ObservationEntry"
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}
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}
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}
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]
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}
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},
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{
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"name": "OraclePriceAccount",
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"type": {
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"kind": "struct",
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"fields": [
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{
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"name": "base_asset",
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"type": "account_id"
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},
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{
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"name": "quote_asset",
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"type": "account_id"
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},
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{
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"name": "price",
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"type": "u128"
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},
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{
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"name": "timestamp",
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"type": "u64"
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},
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{
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"name": "source_id",
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"type": "account_id"
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},
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{
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"name": "confidence_interval",
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"type": "u128"
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}
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]
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}
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},
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{
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"name": "CurrentTickAccount",
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"type": {
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"kind": "struct",
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"fields": [
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{
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"name": "tick",
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"type": "i32"
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},
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{
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"name": "last_updated",
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"type": "u64"
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}
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]
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}
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}
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],
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"types": [
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{
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"name": "ObservationEntry",
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"kind": "struct",
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"fields": [
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{
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"name": "timestamp",
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"type": "u64"
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},
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{
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"name": "tick_cumulative",
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"type": "i64"
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}
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]
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}
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],
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"instruction_type": "twap_oracle_core::Instruction"
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}
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