Struct TailMetrics 

pub struct TailMetrics {
    pub tail: String,
    pub observed_bytes: u64,
    pub range: [u64; 2],
}

Metrics returned by JobDir::read_tail_metrics.

Bundles the tail content together with the raw byte ranges used in the tail JSON responses, so that callers share the same calculation logic.

Fields

tail: String

The tail text (lossy UTF-8, last N lines / max_bytes).

observed_bytes: u64

Total file size in bytes (0 if the file does not exist).

range: [u64; 2]

Raw byte range [begin, end) represented by the returned text.