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Trim history.jsonl when history.max_bytes is set (#6242)

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This PR honors the `history.max_bytes` configuration parameter by
trimming `history.jsonl` whenever it grows past the configured limit.
While appending new entries we retain the newest record, drop the oldest
lines to stay within the byte budget, and serialize the compacted file
back to disk under the same lock to keep writers safe.
This commit is contained in:
liam
2025-12-02 17:01:05 -05:00
committed by GitHub
parent 77c457121e
commit 4d4778ec1c
4 changed files with 319 additions and 80 deletions
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4
codex-rs/core/src/config/types.rs
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@@ -256,8 +256,8 @@ pub struct History {
/// If true, history entries will not be written to disk.
pub persistence: HistoryPersistence,
/// If set, the maximum size of the history file in bytes.
/// TODO(mbolin): Not currently honored.
/// If set, the maximum size of the history file in bytes. The oldest entries
/// are dropped once the file exceeds this limit.
pub max_bytes: Option<usize>,
}