refactor: Rename table-engine to mito (#539)

* refactor: Rename table-engine to mito

* style: Format codes

* docs: Update mito engine comment

* docs: Explain what is mito in README

Cargo.toml

@@ -32,7 +32,7 @@ members = [
     "src/storage",
     "src/store-api",
     "src/table",
-    "src/table-engine",
+    "src/mito",
 ]
 
 [profile.release]

src/catalog/Cargo.toml

@@ -42,6 +42,6 @@ log-store = { path = "../log-store" }
 object-store = { path = "../object-store" }
 opendal = "0.17"
 storage = { path = "../storage" }
-table-engine = { path = "../table-engine" }
+mito = { path = "../mito" }
 tempdir = "0.3"
 tokio = { version = "1.0", features = ["full"] }

src/catalog/src/system.rs

@@ -372,13 +372,13 @@ pub struct TableEntryValue {
 #[cfg(test)]
 mod tests {
     use log_store::fs::noop::NoopLogStore;
+    use mito::config::EngineConfig;
+    use mito::engine::MitoEngine;
     use object_store::ObjectStore;
     use storage::config::EngineConfig as StorageEngineConfig;
     use storage::EngineImpl;
     use table::metadata::TableType;
     use table::metadata::TableType::Base;
-    use table_engine::config::EngineConfig;
-    use table_engine::engine::MitoEngine;
     use tempdir::TempDir;
 
     use super::*;

src/datanode/Cargo.toml

@@ -46,7 +46,7 @@ storage = { path = "../storage" }
 store-api = { path = "../store-api" }
 substrait = { path = "../common/substrait" }
 table = { path = "../table" }
-table-engine = { path = "../table-engine", features = ["test"] }
+mito = { path = "../mito", features = ["test"] }
 tokio = { version = "1.18", features = ["full"] }
 tokio-stream = { version = "0.1", features = ["net"] }
 tonic = "0.8"

src/datanode/src/instance.rs

@@ -25,6 +25,8 @@ use log_store::fs::config::LogConfig;
 use log_store::fs::log::LocalFileLogStore;
 use meta_client::client::{MetaClient, MetaClientBuilder};
 use meta_client::MetaClientOpts;
+use mito::config::EngineConfig as TableEngineConfig;
+use mito::engine::MitoEngine;
 use object_store::layers::LoggingLayer;
 use object_store::services::fs::Builder;
 use object_store::{util, ObjectStore};
@@ -33,8 +35,6 @@ use snafu::prelude::*;
 use storage::config::EngineConfig as StorageEngineConfig;
 use storage::EngineImpl;
 use table::table::TableIdProviderRef;
-use table_engine::config::EngineConfig as TableEngineConfig;
-use table_engine::engine::MitoEngine;
 
 use crate::datanode::{DatanodeOptions, ObjectStoreConfig};
 use crate::error::{

src/datanode/src/mock.rs

@@ -19,12 +19,12 @@ use catalog::remote::MetaKvBackend;
 use common_catalog::consts::MIN_USER_TABLE_ID;
 use meta_client::client::{MetaClient, MetaClientBuilder};
 use meta_srv::mocks::MockInfo;
+use mito::config::EngineConfig as TableEngineConfig;
 use query::QueryEngineFactory;
 use storage::config::EngineConfig as StorageEngineConfig;
 use storage::EngineImpl;
 use table::metadata::TableId;
 use table::table::{TableIdProvider, TableIdProviderRef};
-use table_engine::config::EngineConfig as TableEngineConfig;
 
 use crate::datanode::DatanodeOptions;
 use crate::error::Result;
@@ -38,7 +38,7 @@ impl Instance {
     // This method is used in other crate's testing codes, so move it out of "cfg(test)".
     // TODO(LFC): Delete it when callers no longer need it.
     pub async fn new_mock() -> Result<Self> {
-        use table_engine::table::test_util::{new_test_object_store, MockEngine, MockMitoEngine};
+        use mito::table::test_util::{new_test_object_store, MockEngine, MockMitoEngine};
 
         let mock_info = meta_srv::mocks::mock_with_memstore().await;
         let meta_client = Some(Arc::new(mock_meta_client(mock_info, 0).await));

src/datanode/src/sql.rs

@@ -97,6 +97,8 @@ mod tests {
     use datatypes::schema::{ColumnSchema, SchemaBuilder, SchemaRef};
     use datatypes::value::Value;
     use log_store::fs::noop::NoopLogStore;
+    use mito::config::EngineConfig as TableEngineConfig;
+    use mito::engine::MitoEngine;
     use object_store::services::fs::Builder;
     use object_store::ObjectStore;
     use query::QueryEngineFactory;
@@ -106,8 +108,6 @@ mod tests {
     use table::error::Result as TableResult;
     use table::metadata::TableInfoRef;
     use table::{Table, TableRef};
-    use table_engine::config::EngineConfig as TableEngineConfig;
-    use table_engine::engine::MitoEngine;
     use tempdir::TempDir;
 
     use super::*;

src/datanode/src/tests/test_util.rs

@@ -20,11 +20,11 @@ use common_catalog::consts::{DEFAULT_CATALOG_NAME, DEFAULT_SCHEMA_NAME, MIN_USER
 use datatypes::data_type::ConcreteDataType;
 use datatypes::schema::{ColumnSchema, SchemaBuilder};
 use frontend::frontend::Mode;
+use mito::config::EngineConfig;
+use mito::table::test_util::{new_test_object_store, MockEngine, MockMitoEngine};
 use snafu::ResultExt;
 use table::engine::{EngineContext, TableEngineRef};
 use table::requests::CreateTableRequest;
-use table_engine::config::EngineConfig;
-use table_engine::table::test_util::{new_test_object_store, MockEngine, MockMitoEngine};
 use tempdir::TempDir;
 
 use crate::datanode::{DatanodeOptions, ObjectStoreConfig};

src/table-engine/Cargo.toml → src/mito/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "table-engine"
+name = "mito"
 version = "0.1.0"
 edition = "2021"
 license = "Apache-2.0"

src/mito/README.md

@@ -0,0 +1,8 @@
+# Mito
+
+Mito is GreptimeDB's default table engine.
+
+## About Mito
+The Alfa Romeo [MiTo](https://en.wikipedia.org/wiki/Alfa_Romeo_MiTo) is a front-wheel drive, three-door supermini designed by Centro Stile Alfa Romeo.
+
+> "You can't be a true petrolhead until you've owned an Alfa Romeo." -- by Jeremy Clarkson

src/table-engine/src/engine.rs → src/mito/src/engine.rs

@@ -64,7 +64,7 @@ fn table_dir(schema_name: &str, table_name: &str) -> String {
 /// [TableEngine] implementation.
 ///
 /// About mito <https://en.wikipedia.org/wiki/Alfa_Romeo_MiTo>.
-/// "you can't be a true petrolhead until you've owned an Alfa Romeo" -- by Jeremy Clarkson
+/// "You can't be a true petrolhead until you've owned an Alfa Romeo." -- by Jeremy Clarkson
 #[derive(Clone)]
 pub struct MitoEngine<S: StorageEngine> {
     inner: Arc<MitoEngineInner<S>>,

src/script/Cargo.toml

@@ -58,7 +58,7 @@ log-store = { path = "../log-store" }
 ron = "0.7"
 serde = { version = "1.0", features = ["derive"] }
 storage = { path = "../storage" }
-table-engine = { path = "../table-engine", features = ["test"] }
+mito = { path = "../mito", features = ["test"] }
 tempdir = "0.3"
 tokio = { version = "1.18", features = ["full"] }
 tokio-test = "0.4"

src/script/src/manager.rs

@@ -96,17 +96,17 @@ impl ScriptManager {
 #[cfg(test)]
 mod tests {
     use catalog::CatalogManager;
+    use mito::config::EngineConfig as TableEngineConfig;
+    use mito::table::test_util::new_test_object_store;
     use query::QueryEngineFactory;
-    use table_engine::config::EngineConfig as TableEngineConfig;
-    use table_engine::table::test_util::new_test_object_store;
 
     use super::*;
     type DefaultEngine = MitoEngine<EngineImpl<LocalFileLogStore>>;
     use log_store::fs::config::LogConfig;
     use log_store::fs::log::LocalFileLogStore;
+    use mito::engine::MitoEngine;
     use storage::config::EngineConfig as StorageEngineConfig;
     use storage::EngineImpl;
-    use table_engine::engine::MitoEngine;
     use tempdir::TempDir;
 
     #[tokio::test]

src/sql/Cargo.toml

@@ -15,4 +15,4 @@ itertools = "0.10"
 once_cell = "1.10"
 snafu = { version = "0.7", features = ["backtraces"] }
 sqlparser = "0.15.0"
-table-engine = { path = "../table-engine" }
+mito = { path = "../mito" }

src/sql/src/parsers/create_parser.rs

@@ -15,13 +15,13 @@
 use std::cmp::Ordering;
 
 use itertools::Itertools;
+use mito::engine;
 use once_cell::sync::Lazy;
 use snafu::{ensure, OptionExt, ResultExt};
 use sqlparser::ast::Value;
 use sqlparser::dialect::keywords::Keyword;
 use sqlparser::parser::IsOptional::Mandatory;
 use sqlparser::tokenizer::{Token, Word};
-use table_engine::engine;
 
 use crate::ast::{ColumnDef, Ident, TableConstraint, Value as SqlValue};
 use crate::error::{self, InvalidTimeIndexSnafu, Result, SyntaxSnafu};