Struct PartialDownloadStateInner 

pub struct PartialDownloadStateInner {
    pub url: Option<Url>,
    pub etag: Option<Option<Arc<str>>>,
    pub last_modified: Option<Option<Arc<str>>>,
    pub config: Option<PartialConfig>,
    pub size: Option<u64>,
    pub elapsed: Option<Duration>,
}

Fields

url: Option<Url>

etag: Option<Option<Arc<str>>>

last_modified: Option<Option<Arc<str>>>

config: Option<PartialConfig>

size: Option<u64>

Total file size recorded at save time, compared against the server UrlInfo.size during resume validation.

An older .fd written without this field reads back as None, which makes validate fail and safely fall back to a full re-download.

elapsed: Option<Duration>

Total active download time accumulated across all resume runs.

Persisted as a human-readable string (e.g. "1h 30m 2s") via humantime_serde, so the .fd file stays easy to inspect and edit by hand. A zero elapsed is omitted from the file, and a missing elapsed field on load is tolerated (treated as zero). A resumed download continues this clock instead of restarting it from zero; the progress reporter folds it into its average-speed calculation, giving a speed that spans the whole download session rather than only the current run.

Trait Implementations

impl Clone for PartialDownloadStateInner

fn clone(&self) -> PartialDownloadStateInner

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl ConfigLayer for PartialDownloadStateInner

type Full = DownloadStateInner

对应的全量配置结构体类型

fn inherit_from(&mut self, parent: &Self)

继承合并：如果自己为空，则向 parent 借用

fn simplify_from(&mut self, parent: &Self)

差分化简：移除与 parent 相同的字段，以及 parent 未设置时与默认值相同的字段

fn build(self) -> Self::Full

构建全量结构体：填补所有空白字段为默认值

fn from_full(full: Self::Full) -> Self

从全量结构体构造 Partial：所有字段包装为 Some

impl Debug for PartialDownloadStateInner

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

Formats the value using the given formatter.

impl Default for PartialDownloadStateInner

fn default() -> PartialDownloadStateInner

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for PartialDownloadStateInner

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<DownloadStateInner> for PartialDownloadStateInner

fn from(full: DownloadStateInner) -> Self

Converts to this type from the input type.

impl PartialEq for PartialDownloadStateInner

fn eq(&self, other: &PartialDownloadStateInner) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for PartialDownloadStateInner

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for PartialDownloadStateInner