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r4bbit
3ba39777d9
A tick is the TWAP's internal representation, so price sources should not have to
compute it — just as consumers never deal with ticks. CreateCurrentTickAccount and
UpdateCurrentTick now take a Q64.64 spot price (for an AMM, reserve_b/reserve_a) and
the oracle converts it to a tick internally. This keeps producers tick-agnostic,
mirrors the consumer side, and centralises all tick knowledge in the oracle.
CreateCurrentTickAccount { initial_tick: i32 } -> { initial_price: u128 }
UpdateCurrentTick { tick: i32 } -> { price: u128 }
Add price_to_tick(price: u128) -> i32 to twap_oracle_core, the inverse of
tick_to_oracle_price: 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).
CurrentTickAccount (still stores a tick) and record_tick are unchanged.
294 lines
5.7 KiB
JSON
294 lines
5.7 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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"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": "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": "publish_price",
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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": "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": "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_source_id",
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"type": "account_id"
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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": "record_tick",
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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": "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": "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_source_id",
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"type": "account_id"
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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": "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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