29 lines
794 B
Rust
29 lines
794 B
Rust
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pub type DBValue = Vec<u8>;
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#[derive(Debug)]
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pub struct DBError {
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pub message: String,
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}
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impl DBError {
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pub fn new(message: String) -> Self {
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Self { message }
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}
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}
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/// A generic database to be used by the "client' (i.e.,
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/// the lighthouse blockchain client).
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///
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/// The purpose of having this generic trait is to allow the
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/// program to use a persistent on-disk database during production,
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/// but use a transient database during tests.
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pub trait ClientDB: Sync + Send {
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fn get(&self, col: &str, key: &[u8]) -> Result<Option<DBValue>, DBError>;
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fn put(&self, col: &str, key: &[u8], val: &[u8]) -> Result<(), DBError>;
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fn exists(&self, col: &str, key: &[u8]) -> Result<bool, DBError>;
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fn delete(&self, col: &str, key: &[u8]) -> Result<(), DBError>;
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}
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