Enum TileCacheEntry 

pub enum TileCacheEntry {
    Pending,
    Loaded(CachedTile),
    Expired(CachedTile),
    Reloading(CachedTile),
    Failed {
        error: String,
        stale: Option<CachedTile>,
    },
}

State of a tile in the cache.

Variants

Pending

A fetch has been issued but no renderable payload exists yet.

Loaded(CachedTile)

The tile is loaded and considered fresh.

Expired(CachedTile)

The tile payload is stale but still renderable while refresh is pending.

Reloading(CachedTile)

A refresh is in flight; the previous payload remains renderable.

Failed

The tile fetch failed. The optional cached tile remains renderable when the failure happened during refresh/revalidation.

Fields

error: String

Human-readable error description.

stale: Option<CachedTile>

Previously retained renderable payload, if any.

Implementations

impl TileCacheEntry

pub fn is_pending(&self) -> bool

Returns true if the entry is currently pending load.

pub fn is_loaded(&self) -> bool

Returns true if the entry currently has a loaded or reloadable payload.

pub fn is_expired(&self) -> bool

Returns true if the entry is in a stale-but-renderable expired state.

pub fn is_reloading(&self) -> bool

Returns true if the entry is actively reloading while keeping old data.

pub fn is_failed(&self) -> bool

Returns true if the entry is in a failed state.

pub fn is_renderable(&self) -> bool

Returns true if this entry still has renderable tile data.

pub fn data(&self) -> Option<&TileData>

Return the renderable tile payload, if any.

pub fn cached_tile(&self) -> Option<&CachedTile>

Return the loaded payload, if any.

pub fn freshness(&self) -> Option<&TileFreshness>

Return freshness metadata for renderable entries.

pub fn loaded_at(&self) -> Option<SystemTime>

Return the wall-clock time when this entry was promoted to Loaded.

Returns None for entries that have no renderable payload.

Trait Implementations

impl Debug for TileCacheEntry

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

Formats the value using the given formatter.