Use RegistryApi in releases

SuficioAC · SuficioAC · commit b7750255a82f · 2024-10-21T18:18:47.000-04:00
diff --git a/src/registry_api.rs b/src/registry_api.rs
@@ -1,5 +1,5 @@
 use crate::{error::Result, utils::retry_async};
-use anyhow::{anyhow, Context};
+use anyhow::{anyhow, bail, Context};
 use chrono::{DateTime, Utc};
 use reqwest::header::{HeaderValue, ACCEPT, USER_AGENT};
 use semver::Version;
@@ -69,6 +69,26 @@ impl fmt::Display for OwnerKind {
     }
 }
 
+#[derive(Deserialize, Debug)]
+
+pub(crate) struct SearchCrate {
+    pub(crate) name: String,
+}
+
+#[derive(Deserialize, Debug)]
+
+pub(crate) struct SearchMeta {
+    pub(crate) next_page: Option<String>,
+    pub(crate) prev_page: Option<String>,
+}
+
+#[derive(Deserialize, Debug)]
+pub(crate) struct Search {
+    pub(crate) crates: Vec<SearchCrate>,
+    pub(crate) meta: SearchMeta,
+    pub(crate) executed_query: Option<String>,
+}
+
 impl RegistryApi {
     pub fn new(api_base: Url, max_retries: u32) -> Result<Self> {
         let headers = vec![
@@ -227,4 +247,71 @@ impl RegistryApi {
 
         Ok(result)
     }
+
+    /// Fetch crates from the registry's API
+    pub(crate) async fn get_crates(&self, query: Option<&str>) -> Result<Search> {
+        #[derive(Deserialize, Debug)]
+        struct SearchError {
+            pub(crate) detail: String,
+        }
+
+        #[derive(Deserialize, Debug)]
+        struct SearchResponse {
+            pub(crate) crates: Option<Vec<SearchCrate>>,
+            pub(crate) meta: Option<SearchMeta>,
+            pub(crate) errors: Option<Vec<SearchError>>,
+        }
+
+        let url = {
+            let mut url = self.api_base.clone();
+            url.path_segments_mut()
+                .map_err(|()| anyhow!("Invalid API url"))?
+                .extend(&["api", "v1", "crates"]);
+            url.set_query(query);
+            url
+        };
+
+        // Extract the query from the query args
+        let executed_query = url.query_pairs().find_map(|(key, value)| {
+            if key == "q" {
+                Some(value.to_string())
+            } else {
+                None
+            }
+        });
+
+        let response: SearchResponse = retry_async(
+            || async {
+                Ok(self
+                    .client
+                    .get(url.clone())
+                    .send()
+                    .await?
+                    .error_for_status()?)
+            },
+            self.max_retries,
+        )
+        .await?
+        .json()
+        .await?;
+
+        if let Some(errors) = response.errors {
+            let messages: Vec<_> = errors.into_iter().map(|e| e.detail).collect();
+            bail!("got error from crates.io: {}", messages.join("\n"));
+        }
+
+        let Some(crates) = response.crates else {
+            bail!("missing releases in crates.io response");
+        };
+
+        let Some(meta) = response.meta else {
+            bail!("missing metadata in crates.io response");
+        };
+
+        Ok(Search {
+            crates,
+            meta,
+            executed_query,
+        })
+    }
 }
diff --git a/src/utils/mod.rs b/src/utils/mod.rs
@@ -31,12 +31,6 @@ pub(crate) mod sized_buffer;
 
 use std::{future::Future, thread, time::Duration};
 
-pub(crate) const APP_USER_AGENT: &str = concat!(
-    env!("CARGO_PKG_NAME"),
-    " ",
-    include_str!(concat!(env!("OUT_DIR"), "/git_version"))
-);
-
 pub(crate) fn report_error(err: &anyhow::Error) {
     // Debug-format for anyhow errors includes context & backtrace
     if std::env::var("SENTRY_DSN").is_ok() {
diff --git a/src/web/mod.rs b/src/web/mod.rs
@@ -424,6 +424,7 @@ async fn apply_middleware(
             .layer(Extension(context.service_metrics()?))
             .layer(Extension(context.instance_metrics()?))
             .layer(Extension(context.config()?))
+            .layer(Extension(context.registry_api()?))
             .layer(Extension(async_storage))
             .layer(option_layer(template_data.map(Extension)))
             .layer(middleware::from_fn(csp::csp_middleware))
diff --git a/src/web/releases.rs b/src/web/releases.rs
@@ -3,7 +3,7 @@
 use crate::{
     build_queue::QueuedCrate,
     cdn, impl_axum_webpage,
-    utils::{report_error, retry_async},
+    utils::report_error,
     web::{
         axum_parse_uri_with_params, axum_redirect, encode_url_path,
         error::{AxumNope, AxumResult},
@@ -12,24 +12,23 @@ use crate::{
         page::templates::{filters, RenderRegular, RenderSolid},
         ReqVersion,
     },
-    AsyncBuildQueue, Config, InstanceMetrics,
+    AsyncBuildQueue, Config, InstanceMetrics, RegistryApi,
 };
-use anyhow::{anyhow, bail, Context as _, Result};
+use anyhow::{anyhow, Context as _, Result};
 use axum::{
     extract::{Extension, Query},
     response::{IntoResponse, Response as AxumResponse},
 };
 use base64::{engine::general_purpose::STANDARD as b64, Engine};
 use chrono::{DateTime, Utc};
 use futures_util::stream::TryStreamExt;
-use once_cell::sync::Lazy;
 use rinja::Template;
-use serde::{Deserialize, Serialize};
+use serde::Serialize;
 use sqlx::Row;
 use std::collections::{BTreeMap, HashMap, HashSet};
 use std::str;
 use std::sync::Arc;
-use tracing::{debug, warn};
+use tracing::warn;
 use url::form_urlencoded;
 
 use super::cache::CachePolicy;
@@ -142,85 +141,14 @@ struct SearchResult {
 /// This delegates to the crates.io search API.
 async fn get_search_results(
     conn: &mut sqlx::PgConnection,
-    config: &Config,
-    query_params: &str,
+    registry: &RegistryApi,
+    query_params: Option<&str>,
 ) -> Result<SearchResult, anyhow::Error> {
-    #[derive(Deserialize)]
-    struct CratesIoError {
-        detail: String,
-    }
-    #[derive(Deserialize)]
-    struct CratesIoSearchResult {
-        crates: Option<Vec<CratesIoCrate>>,
-        meta: Option<CratesIoMeta>,
-        errors: Option<Vec<CratesIoError>>,
-    }
-    #[derive(Deserialize, Debug)]
-    struct CratesIoCrate {
-        name: String,
-    }
-    #[derive(Deserialize, Debug)]
-    struct CratesIoMeta {
-        next_page: Option<String>,
-        prev_page: Option<String>,
-    }
-
-    use crate::utils::APP_USER_AGENT;
-    use reqwest::header::{HeaderMap, HeaderValue, ACCEPT, USER_AGENT};
-    use reqwest::Client as HttpClient;
-
-    static HTTP_CLIENT: Lazy<HttpClient> = Lazy::new(|| {
-        let mut headers = HeaderMap::new();
-        headers.insert(USER_AGENT, HeaderValue::from_static(APP_USER_AGENT));
-        headers.insert(ACCEPT, HeaderValue::from_static("application/json"));
-        HttpClient::builder()
-            .default_headers(headers)
-            .build()
-            .unwrap()
-    });
-
-    let url = config
-        .registry_api_host
-        .join(&format!("api/v1/crates{query_params}"))?;
-    debug!("fetching search results from {}", url);
-
-    // extract the query from the query args.
-    // This is easier because the query might have been encoded in the bash64-encoded
-    // paginate parameter.
-    let executed_query = url.query_pairs().find_map(|(key, value)| {
-        if key == "q" {
-            Some(value.to_string())
-        } else {
-            None
-        }
-    });
-
-    let response: CratesIoSearchResult = retry_async(
-        || async {
-            Ok(HTTP_CLIENT
-                .get(url.clone())
-                .send()
-                .await?
-                .error_for_status()?)
-        },
-        config.crates_io_api_call_retries,
-    )
-    .await?
-    .json()
-    .await?;
-
-    if let Some(errors) = response.errors {
-        let messages: Vec<_> = errors.into_iter().map(|e| e.detail).collect();
-        bail!("got error from crates.io: {}", messages.join("\n"));
-    }
-
-    let Some(crates) = response.crates else {
-        bail!("missing releases in crates.io response");
-    };
-
-    let Some(meta) = response.meta else {
-        bail!("missing metadata in crates.io response");
-    };
+    let crate::registry_api::Search {
+        crates,
+        meta,
+        executed_query,
+    } = registry.get_crates(query_params).await?;
 
     let names = Arc::new(
         crates
@@ -573,6 +501,7 @@ impl_axum_webpage! {
 pub(crate) async fn search_handler(
     mut conn: DbConnection,
     Extension(config): Extension<Arc<Config>>,
+    Extension(registry): Extension<Arc<RegistryApi>>,
     Extension(metrics): Extension<Arc<InstanceMetrics>>,
     Query(mut params): Query<HashMap<String, String>>,
 ) -> AxumResult<AxumResponse> {
@@ -645,20 +574,21 @@ pub(crate) async fn search_handler(
             AxumNope::NoResults
         })?;
         let query_params = String::from_utf8_lossy(&decoded);
-
-        if !query_params.starts_with('?') {
-            // sometimes we see plain bytes being passed to `paginate`.
-            // In these cases we just return `NoResults` and don't call
-            // the crates.io API.
-            // The whole point of the `paginate` design is that we don't
-            // know anything about the pagination args and crates.io can
-            // change them as they wish, so we cannot do any more checks here.
-            warn!(
-                "didn't get query args in `paginate` arguments for search: \"{}\"",
-                query_params
-            );
-            return Err(AxumNope::NoResults);
-        }
+        let query_params = match query_params.strip_prefix('?') {
+            Some(query_params) => query_params,
+            None => {
+                // sometimes we see plain bytes being passed to `paginate`.
+                // In these cases we just return `NoResults` and don't call
+                // the crates.io API.
+                // The whole point of the `paginate` design is that we don't
+                // know anything about the pagination args and crates.io can
+                // change them as they wish, so we cannot do any more checks here.
+                warn!(
+                    "didn't get query args in `paginate` arguments for search: \"{query_params}\""
+                );
+                return Err(AxumNope::NoResults);
+            }
+        };
 
         let mut p = form_urlencoded::parse(query_params.as_bytes());
         if let Some(v) = p.find_map(|(k, v)| {
@@ -671,15 +601,15 @@ pub(crate) async fn search_handler(
             sort_by = v;
         };
 
-        get_search_results(&mut conn, &config, &query_params).await?
+        get_search_results(&mut conn, &registry, Some(query_params)).await?
     } else if !query.is_empty() {
         let query_params: String = form_urlencoded::Serializer::new(String::new())
             .append_pair("q", &query)
             .append_pair("sort", &sort_by)
             .append_pair("per_page", &RELEASES_IN_RELEASES.to_string())
             .finish();
 
-        get_search_results(&mut conn, &config, &format!("?{}", &query_params)).await?
+        get_search_results(&mut conn, &registry, Some(&query_params)).await?
     } else {
         return Err(AxumNope::NoResults);
     };
