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Rename lib to binstalk (#361)
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parent
a94d83f0d5
commit
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49 changed files with 25 additions and 25 deletions
crates/binstalk/src
104
crates/binstalk/src/fetchers.rs
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104
crates/binstalk/src/fetchers.rs
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use std::{path::Path, sync::Arc};
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use compact_str::CompactString;
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pub use gh_crate_meta::*;
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pub use log::debug;
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pub use quickinstall::*;
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use reqwest::Client;
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use crate::{
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errors::BinstallError,
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helpers::tasks::AutoAbortJoinHandle,
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manifests::cargo_toml_binstall::{PkgFmt, PkgMeta},
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};
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mod gh_crate_meta;
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mod quickinstall;
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#[async_trait::async_trait]
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pub trait Fetcher: Send + Sync {
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/// Create a new fetcher from some data
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async fn new(client: &Client, data: &Arc<Data>) -> Arc<Self>
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where
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Self: Sized;
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/// Fetch a package and extract
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async fn fetch_and_extract(&self, dst: &Path) -> Result<(), BinstallError>;
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/// Find the package, if it is available for download
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///
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/// This may look for multiple remote targets, but must write (using some form of interior
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/// mutability) the best one to the implementing struct in some way so `fetch_and_extract` can
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/// proceed without additional work.
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///
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/// Must return `true` if a package is available, `false` if none is, and reserve errors to
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/// fatal conditions only.
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async fn find(&self) -> Result<bool, BinstallError>;
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/// Return the package format
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fn pkg_fmt(&self) -> PkgFmt;
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/// Return finalized target meta.
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fn target_meta(&self) -> PkgMeta;
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/// A short human-readable name or descriptor for the package source
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fn source_name(&self) -> CompactString;
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/// Should return true if the remote is from a third-party source
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fn is_third_party(&self) -> bool;
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/// Return the target for this fetcher
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fn target(&self) -> &str;
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}
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/// Data required to fetch a package
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#[derive(Clone, Debug)]
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pub struct Data {
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pub name: String,
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pub target: String,
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pub version: String,
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pub repo: Option<String>,
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pub meta: PkgMeta,
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}
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type FetcherJoinHandle = AutoAbortJoinHandle<Result<bool, BinstallError>>;
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pub struct MultiFetcher(Vec<(Arc<dyn Fetcher>, FetcherJoinHandle)>);
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impl MultiFetcher {
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pub fn with_capacity(n: usize) -> Self {
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Self(Vec::with_capacity(n))
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}
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pub fn add(&mut self, fetcher: Arc<dyn Fetcher>) {
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self.0.push((
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fetcher.clone(),
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AutoAbortJoinHandle::spawn(async move { fetcher.find().await }),
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));
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}
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pub async fn first_available(self) -> Option<Arc<dyn Fetcher>> {
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for (fetcher, handle) in self.0 {
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match handle.await {
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Ok(Ok(true)) => return Some(fetcher),
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Ok(Ok(false)) => (),
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Ok(Err(err)) => {
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debug!(
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"Error while checking fetcher {}: {}",
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fetcher.source_name(),
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err
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);
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}
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Err(join_err) => {
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debug!(
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"Error while joining the task that checks the fetcher {}: {}",
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fetcher.source_name(),
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join_err
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);
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}
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}
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}
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None
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}
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}
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