Gather .health instance stats

Reworks instance checks to use the same timestamp and be transactional. Also prevents long DB lock times during list updates.

migration/src/lib.rs

@@ -7,6 +7,7 @@ mod m20230803_154714_version_url;
 mod m20230829_201916_country;
 mod m20230914_231514_connectivity;
 mod m20231011_231223_errors;
+mod m20231112_142206_stats;
 
 pub struct Migrator;
 
@@ -21,6 +22,7 @@ impl MigratorTrait for Migrator {
             Box::new(m20230829_201916_country::Migration),
             Box::new(m20230914_231514_connectivity::Migration),
             Box::new(m20231011_231223_errors::Migration),
+            Box::new(m20231112_142206_stats::Migration),
         ]
     }
 }

migration/src/m20231112_142206_stats.rs

@@ -0,0 +1,39 @@
+use sea_orm_migration::prelude::*;
+
+#[derive(DeriveMigrationName)]
+pub struct Migration;
+
+#[async_trait::async_trait]
+impl MigrationTrait for Migration {
+    async fn up(&self, manager: &SchemaManager) -> Result<(), DbErr> {
+        let cmd = r#"CREATE TABLE "instance_stats" (
+            "time" integer NOT NULL,
+            "host" integer NOT NULL,
+            "limited_accs" integer NOT NULL,
+            "total_accs" integer NOT NULL,
+            "total_requests" integer NOT NULL,
+            "req_photo_rail" integer NOT NULL,
+            "req_user_screen_name" integer NOT NULL,
+            "req_search" integer NOT NULL,
+            "req_list_tweets" integer NOT NULL,
+            "req_user_media" integer NOT NULL,
+            "req_tweet_detail" integer NOT NULL,
+            "req_list" integer NOT NULL,
+            "req_user_tweets" integer NOT NULL,
+            "req_user_tweets_and_replies" integer NOT NULL,
+            CONSTRAINT "pk_instance_stats" PRIMARY KEY ("host", "time"),
+            FOREIGN KEY ("host") REFERENCES "host" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+        ) WITHOUT ROWID, STRICT;"#;
+        let db = manager.get_connection();
+        db.execute_unprepared("BEGIN EXCLUSIVE").await?;
+        tracing::info!("adding instance_stats table..");
+        db.execute_unprepared(cmd).await?;
+        db.execute_unprepared("COMMIT TRANSACTION").await?;
+        db.execute_unprepared("VACUUM").await?;
+        Ok(())
+    }
+
+    async fn down(&self, _manager: &SchemaManager) -> Result<(), DbErr> {
+        panic!("Can't migrate down");
+    }
+}