Struct TextBackend 

pub struct TextBackend { /* private fields */ }

A cache backend backed by a plain text file.

Supports line-oriented operations: read ranges, grep, head, tail, stats. The file is written once at creation and read on each operation.

Implementations

impl TextBackend

pub fn store(content: &str, path: &Path) -> Result<Self, CacheError>

Write content to a file and create a backend for it.

Errors

Returns CacheError::Io if the file can’t be written.

pub fn open(path: &Path) -> Result<Self, CacheError>

Open an existing text cache file.

Errors

Returns CacheError::Io if the file can’t be read.

Trait Implementations

impl CacheBackend for TextBackend

fn kind(&self) -> BackendKind

What kind of backend this is.

fn execute(&self, op: CacheOp) -> Result<String, CacheError>

Execute an operation on the cached data.

fn stats(&self) -> Result<CacheStats, CacheError>

Statistics about the cached data.

fn preview(&self, max_lines: usize) -> Result<String, CacheError>

A short preview of the data (first N lines/rows).

fn disk_bytes(&self) -> Result<u64, CacheError>

Size on disk in bytes.

impl Debug for TextBackend

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.