mirror of
https://github.com/logos-blockchain/lez-programs.git
synced 2026-06-10 18:29:27 +00:00
fe9d919299
Adds the CreatePriceObservations instruction to the TWAP oracle program. The instruction initialises a PriceObservations PDA for a given price source account and time window, writing the initial tick and timestamp as the first entry. Key design decisions: - Per-window accounts: each (price_source, window_duration) pair maps to a distinct PriceObservations PDA. The window duration is baked into the PDA seed so a single price source can support multiple TWAP windows (24h, 7d, 30d) at independent sampling rates without sharing a buffer. - window_duration not stored on struct: it is implicit in the PDA address. Any reader that located the account already knows the window duration used to derive it. Storing it would be redundant. - Authorization is implicit: the PriceObservations PDA is derived from the price source account ID, so is_authorized = true on the price source proves the caller controls it without a redundant authority field. - Impersonation is prevented by the PDA check: passing a controlled price source with a victim's observations account ID fails immediately because the computed PDA (from the attacker's source) does not match. Closes #126
358 lines
7.2 KiB
JSON
358 lines
7.2 KiB
JSON
{
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"version": "0.1.0",
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"name": "stablecoin",
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"instructions": [
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{
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"name": "open_position",
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"accounts": [
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{
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"name": "owner",
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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": "position",
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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": "vault",
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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": "user_holding",
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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": "token_definition",
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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": "collateral_amount",
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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": "withdraw_collateral",
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"accounts": [
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{
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"name": "owner",
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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": "position",
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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": "vault",
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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": "destination",
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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": "amount",
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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": "repay_debt",
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"accounts": [
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{
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"name": "owner",
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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": "position",
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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": "stablecoin_definition",
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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": "user_stablecoin_holding",
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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": "amount",
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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": "Position",
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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": "collateral_vault_id",
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"type": "account_id"
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},
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{
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"name": "collateral_definition_id",
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"type": "account_id"
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},
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{
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"name": "collateral_amount",
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"type": "u128"
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},
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{
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"name": "debt_amount",
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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": "TokenDefinition",
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"type": {
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"kind": "enum",
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"variants": [
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{
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"name": "Fungible",
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"fields": [
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{
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"name": "name",
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"type": "string"
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},
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{
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"name": "total_supply",
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"type": "u128"
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},
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{
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"name": "metadata_id",
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"type": {
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"option": "account_id"
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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": "NonFungible",
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"fields": [
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{
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"name": "name",
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"type": "string"
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},
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{
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"name": "printable_supply",
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"type": "u128"
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},
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{
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"name": "metadata_id",
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"type": "account_id"
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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": "TokenHolding",
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"type": {
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"kind": "enum",
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"variants": [
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{
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"name": "Fungible",
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"fields": [
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{
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"name": "definition_id",
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"type": "account_id"
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},
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{
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"name": "balance",
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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": "NftMaster",
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"fields": [
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{
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"name": "definition_id",
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"type": "account_id"
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},
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{
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"name": "print_balance",
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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": "NftPrintedCopy",
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"fields": [
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{
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"name": "definition_id",
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"type": "account_id"
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},
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{
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"name": "owned",
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"type": "bool"
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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": "TokenMetadata",
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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": "definition_id",
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"type": "account_id"
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},
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{
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"name": "standard",
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"type": {
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"defined": "MetadataStandard"
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}
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},
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{
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"name": "uri",
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"type": "string"
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},
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{
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"name": "creators",
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"type": "string"
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},
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{
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"name": "primary_sale_date",
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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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"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": "string"
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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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"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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"name": "MetadataStandard",
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"kind": "enum",
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"variants": [
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{
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"name": "Simple"
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},
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{
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"name": "Expanded"
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}
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]
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}
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],
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"instruction_type": "stablecoin_core::Instruction"
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}
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