59 lines
1.6 KiB
Rust
59 lines
1.6 KiB
Rust
///
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/// A library for creating a trusted date oracle.
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///
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use bincode::{deserialize, serialized_size};
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use {
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crate::{config_instruction, ConfigState},
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chrono::{
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prelude::{DateTime, TimeZone, Utc},
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serde::ts_seconds,
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},
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serde_derive::{Deserialize, Serialize},
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solana_sdk::{instruction::Instruction, pubkey::Pubkey},
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};
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#[derive(Serialize, Deserialize, Debug, PartialEq, Eq, Clone)]
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pub struct DateConfig {
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#[serde(with = "ts_seconds")]
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pub date_time: DateTime<Utc>,
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}
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impl Default for DateConfig {
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fn default() -> Self {
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Self {
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date_time: Utc.timestamp_opt(0, 0).unwrap(),
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}
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}
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}
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impl DateConfig {
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pub fn new(date_time: DateTime<Utc>) -> Self {
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Self { date_time }
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}
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pub fn deserialize(input: &[u8]) -> Option<Self> {
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deserialize(input).ok()
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}
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}
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impl ConfigState for DateConfig {
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fn max_space() -> u64 {
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serialized_size(&Self::default()).unwrap()
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}
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}
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/// Create a date account. The date is set to the Unix epoch.
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pub fn create_account(
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payer_pubkey: &Pubkey,
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date_pubkey: &Pubkey,
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lamports: u64,
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) -> Vec<Instruction> {
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config_instruction::create_account::<DateConfig>(payer_pubkey, date_pubkey, lamports, vec![])
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}
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/// Set the date in the date account. The account pubkey must be signed in the
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/// transaction containing this instruction.
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pub fn store(date_pubkey: &Pubkey, date_time: DateTime<Utc>) -> Instruction {
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let date_config = DateConfig::new(date_time);
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config_instruction::store(date_pubkey, true, vec![], &date_config)
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}
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