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
21 lines
728 B
TOML
21 lines
728 B
TOML
[package]
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name = "twap-oracle-guest"
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version = "0.1.0"
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edition = "2021"
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[workspace]
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[[bin]]
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name = "twap_oracle"
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path = "src/bin/twap_oracle.rs"
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[dependencies]
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spel-framework = { git = "https://github.com/logos-co/spel.git", tag = "v0.3.0", package = "spel-framework" }
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nssa_core = { git = "https://github.com/logos-blockchain/logos-execution-zone.git", tag = "v0.2.0-rc3" }
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clock_core = { git = "https://github.com/logos-blockchain/logos-execution-zone.git", tag = "v0.2.0-rc3" }
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risc0-zkvm = { version = "=3.0.5", default-features = false }
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twap_oracle_core = { path = "../../core" }
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twap_oracle_program = { path = "../..", package = "twap_oracle_program" }
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serde = { version = "1.0", features = ["derive"] }
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borsh = "1.5"
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