page: Instrument save_page function

Adding a span and event to track indexing time.

src/page.rs

@@ -5,6 +5,7 @@ use markup5ever_rcdom::{Handle, NodeData, RcDom};
 use meilisearch_sdk::errors::Error;
 use rand::Rng;
 use serde::Serialize;
+use tracing::{debug, event, span, Level};
 
 use crate::Context;
 
@@ -31,8 +32,11 @@ pub async fn save_page(
     data: &str,
     ctx: &Context,
 ) -> Result<Page, Error> {
-    let client = &ctx.client;
-    let index = client.get_index(&ctx.config.meilisearch.index).await?;
+    let span = span!(Level::INFO, "save_page", url = url);
+    let _guard = span.enter();
+    let index_name = &ctx.config.meilisearch.index;
+    debug!("Saving page in Meilisearch index {}", index_name);
+    let index = ctx.client.get_index(index_name).await?;
     let doc = Page {
         id: gen_id(),
         timestamp: Utc::now(),
@@ -41,6 +45,7 @@ pub async fn save_page(
         data: data.into(),
     };
     index.add_or_replace(&[doc.clone()], Some("id")).await?;
+    event!(Level::INFO, "Saved page {}", doc.id);
     Ok(doc)
 }