correctly calculate percentegates

src/db.rs

@@ -197,25 +197,30 @@ pub async fn migrate_checks(db: &Pool<Sqlite>, interval_seconds: u64) -> Result<
     }
 
     info!("Inserting checks");
-    let mut db = db.begin().await.wrap_err("starting transaction")?;
+    let mut db_trans = db.begin().await.wrap_err("starting transaction")?;
     for check in table.iter() {
         sqlx::query("INSERT INTO checks_series (request_time_range_start, request_time_range_end, website, result) VALUES (?, ?, ?, ?);")
         .bind(check.request_time_range_start)
         .bind(check.request_time_range_end)
         .bind(&check.website)
         .bind(&check.result)
-        .execute(&mut *db)
+        .execute(&mut *db_trans)
         .await
         .wrap_err_with(|| format!("inserting new series record for {}", check.website))?;
     }
     info!("Dropping old table");
 
     sqlx::query("DROP TABLE checks")
-        .execute(&mut *db)
+        .execute(&mut *db_trans)
         .await
         .wrap_err("dropping table checks")?;
 
-    db.commit().await.wrap_err("committing transaction")?;
+    db_trans.commit().await.wrap_err("committing transaction")?;
+
+    sqlx::query("VACUUM")
+        .execute(db)
+        .await
+        .wrap_err("running vacuum")?;
 
     Ok(())
 }

src/web.rs

@@ -81,15 +81,22 @@ fn compute_status(checks: Vec<CheckSeries>) -> Vec<WebsiteStatus> {
             const BAR_ELEMS: usize = 100;
             let bar_info = checks_to_classes(&checks, BAR_ELEMS);
 
-            let len = checks.len();
+            let total_duration_millis = checks
+                .first()
+                .map(|first| {
+                    checks.last().unwrap().0.end.timestamp_millis()
+                        - first.0.start.timestamp_millis()
+                })
+                .unwrap_or_default();
+
             checks.into_iter().for_each(|(time, result)| {
                 if let CheckState::Ok = result {
                     last_ok = std::cmp::max(last_ok, Some(time.end));
-                    count_ok += 1;
+                    count_ok += time.end.timestamp_millis() - time.start.timestamp_millis();
                 }
             });
 
-            let ok_ratio = (count_ok as f32) / (len as f32);
+            let ok_ratio = (count_ok as f32) / (total_duration_millis as f32);
             let ok_ratio = format!("{:.2}%", ok_ratio * 100.0);
 
             let last_ok = last_ok.map(|utc| utc.render_nicely());
@@ -97,8 +104,6 @@ fn compute_status(checks: Vec<CheckSeries>) -> Vec<WebsiteStatus> {
                 website,
                 last_ok,
                 ok_ratio,
-                count_ok,
-                total_requests: len,
                 bar_info,
             }
         })
@@ -221,8 +226,6 @@ struct WebsiteStatus {
     website: String,
     last_ok: Option<String>,
     ok_ratio: String,
-    total_requests: usize,
-    count_ok: usize,
     bar_info: BarInfo,
 }
 

templates/index.html

@@ -68,8 +68,7 @@
 
       <h2>{{ check.website }}</h2>
       <p>
-        Uptime: {{ check.ok_ratio }} ({{ check.count_ok }}/{{
+        Uptime: {{ check.ok_ratio }}
-        check.total_requests }})
       </p>
       {% if check.last_ok.is_some() %}
       <p>