Struct Fetcher 

pub struct Fetcher { /* private fields */ }

Implementations

impl Fetcher

pub fn new(cache_root: PathBuf, auth: Auth) -> Result<Fetcher>

pub async fn dist_bytes( &self, name: &str, url: &str, expected_sha1: Option<&str>, offline: bool, ) -> Result<(Vec<u8>, Provenance)>

Bytes of the dist: cache first (shasum re-checked), network otherwise (3 attempts, backoff), cache fed through temp+rename.

pub async fn metadata_bytes(&self, url: &str) -> Result<Option<Vec<u8>>>

Metadata GET (packages.json, p2 files): Ok(None) on 404 (unknown package, tolerated by Composer), error otherwise; 3 attempts on transport errors.

pub async fn post_form(&self, url: &str, body: &str) -> Result<MetadataResponse>

application/x-www-form-urlencoded POST (the security advisories API: packages[]=...), 10 s timeout like Composer, a single attempt; 404 -> NotFound.

pub async fn metadata_fetch( &self, url: &str, if_modified_since: Option<&str>, ) -> Result<MetadataResponse>

Conditional metadata GET: If-Modified-Since when the cache has a date, 304 -> NotModified, 404 -> NotFound, else the body and the Last-Modified header; 3 attempts on transport errors.