fix(db-tool): Tool to run DB migrations

tools/database/README.md

@@ -79,6 +79,18 @@ available in `/home/ubuntu/.near/data/snapshot`
 This command can be helpful before attempting activities that can potentially
 corrupt the database.
 
+### Run DB Migrations
+
+Opens the DB and runs migrations to bring it to the actual version expected by `neard`
+Example usage:
+```bash
+cargo run --bin neard database run-migrations
+```
+
+For example, if the binary expects DB version `38`, but the DB is currently
+version `36`, the command will open the DB, run migrations that bring the DB
+from version `36` to version `38`, and then exits.
+
 ## State read perf
 A tool for performance testing hot storage RocksDB State column reads.
 Use help to get more details: `neard database state-perf --help`

tools/database/src/commands.rs

@@ -1,6 +1,7 @@
 use crate::adjust_database::ChangeDbKindCommand;
 use crate::analyse_data_size_distribution::AnalyseDataSizeDistributionCommand;
 use crate::make_snapshot::MakeSnapshotCommand;
+use crate::run_migrations::RunMigrationsCommand;
 use crate::state_perf::StatePerfCommand;
 use clap::Parser;
 use std::path::PathBuf;
@@ -23,6 +24,9 @@ enum SubCommand {
     /// Make snapshot of the database
     MakeSnapshot(MakeSnapshotCommand),
 
+    /// Run migrations,
+    RunMigrations(RunMigrationsCommand),
+
     /// Run performance test for State column reads.
     /// Uses RocksDB data specified via --home argument.
     StatePerf(StatePerfCommand),
@@ -41,6 +45,7 @@ impl DatabaseCommand {
                 .unwrap_or_else(|e| panic!("Error loading config: {:#}", e));
                 cmd.run(home, near_config.config.archive, &near_config.config.store)
             }
+            SubCommand::RunMigrations(cmd) => cmd.run(home),
             SubCommand::StatePerf(cmd) => cmd.run(home),
         }
     }

tools/database/src/lib.rs

@@ -2,5 +2,6 @@ mod adjust_database;
 mod analyse_data_size_distribution;
 pub mod commands;
 mod make_snapshot;
+mod run_migrations;
 mod state_perf;
 mod utils;

tools/database/src/run_migrations.rs

@@ -0,0 +1,16 @@
+use std::path::Path;
+
+#[derive(clap::Args)]
+pub(crate) struct RunMigrationsCommand {}
+
+impl RunMigrationsCommand {
+    pub(crate) fn run(&self, home_dir: &Path) -> anyhow::Result<()> {
+        let mut near_config = nearcore::config::load_config(
+            &home_dir,
+            near_chain_configs::GenesisValidationMode::UnsafeFast,
+        )
+        .unwrap_or_else(|e| panic!("Error loading config: {:#}", e));
+        nearcore::open_storage(home_dir, &mut near_config)?;
+        Ok(())
+    }
+}