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https://github.com/neondatabase/neon.git
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b3d3a2587d
Improve the serde impl for several types (`Lsn`, `TenantId`, `TimelineId`) by making them sensitive to `Serializer::is_human_readadable` (true for json, false for bincode). Fixes #3511 by: - Implement the custom serde for `Lsn` - Implement the custom serde for `Id` - Add the helper module `serde_as_u64` in `libs/utils/src/lsn.rs` - Remove the unnecessary attr `#[serde_as(as = "DisplayFromStr")]` in all possible structs Additionally some safekeeper types gained serde tests. --------- Co-authored-by: Joonas Koivunen <joonas@neon.tech>
42 lines
1.4 KiB
Rust
42 lines
1.4 KiB
Rust
/// Useful type for asserting that expected bytes match reporting the bytes more readable
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/// array-syntax compatible hex bytes.
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///
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/// # Usage
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///
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/// ```
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/// use utils::Hex;
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///
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/// let actual = serialize_something();
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/// let expected = [0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x77, 0x6f, 0x72, 0x6c, 0x64];
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///
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/// // the type implements PartialEq and on mismatch, both sides are printed in 16 wide multiline
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/// // output suffixed with an array style length for easier comparisons.
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/// assert_eq!(Hex(&actual), Hex(&expected));
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///
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/// // with `let expected = [0x68];` the error would had been:
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/// // assertion `left == right` failed
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/// // left: [0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x77, 0x6f, 0x72, 0x6c, 0x64; 11]
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/// // right: [0x68; 1]
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/// # fn serialize_something() -> Vec<u8> { "hello world".as_bytes().to_vec() }
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/// ```
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#[derive(PartialEq)]
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pub struct Hex<'a>(pub &'a [u8]);
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impl std::fmt::Debug for Hex<'_> {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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write!(f, "[")?;
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for (i, c) in self.0.chunks(16).enumerate() {
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if i > 0 && !c.is_empty() {
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writeln!(f, ", ")?;
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}
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for (j, b) in c.iter().enumerate() {
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if j > 0 {
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write!(f, ", ")?;
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}
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write!(f, "0x{b:02x}")?;
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}
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}
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write!(f, "; {}]", self.0.len())
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}
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}
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