Add rpc stats

src/utils/db.ts

@@ -747,5 +747,53 @@ export async function db_migrate() {
     `);
   }
 
+  await db_query(`
+    create table if not exists rpc (
+      rpc_id serial PRIMARY KEY,
+
+      -- the chain this rpc is for
+      chain chain_enum not null,
+
+      -- the rpc unique external key
+      rpc_key varchar UNIQUE NOT NULL,
+
+      -- rpc url where secrets are template variables
+      rpc_template_url varchar not null
+    );
+  `);
+
+  await db_query(`
+    create table if not exists rpc_call_ts (
+      datetime timestamptz not null,
+      rpc_id integer not null references rpc(rpc_id),
+
+      -- performance fields
+      waiting_for_lock_ms integer not null,
+      call_duration_ms integer not null,
+
+      -- why was this call made
+      reason varchar not null, -- include mode (historical, recent), importer (ppfs snapshot, investments, etc)
+
+      -- what was inside this call
+      json_rpc_batch_size smallint not null, -- set to zero if not a batch call
+      eth_getlogs_count smallint not null,
+      eth_call_count smallint not null, 
+      eth_call_count smallint not null, 
+
+      -- result 
+      call_made boolean,
+      got_response boolean,
+      success_response boolean
+      all_success_in_batch boolean
+    );
+    
+    SELECT create_hypertable(
+      relation => 'rpc_call_ts', 
+      time_column_name => 'datetime',
+      chunk_time_interval => INTERVAL '1 days',
+      if_not_exists => true
+    );
+  `);
+
   logger.info({ msg: "Migrate done" });
 }