chore: init repo

.gitignore

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+/target
+Cargo.lock

Cargo.toml

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+[package]
+name = "datastores"
+version = "0.1.0"
+authors = ["JesusPerez <jpl@jesusperez.pro>"]
+edition = "2018"
+
+[dependencies]
+anyhow = "1.0.40"
+envmnt = "0.9.0"
+serde = { version = "1.0", features = ["derive"] }
+serde_derive = "1.0"
+#tokio = { version = "1.5.0", features = ["full"] }
+
+#redis = { version = "0.21.2", features = [ "tokio-comp", "cluster"] }
+#slab = "0.4.4"
+#sqlx = {version = "0.5.7", default-features = false, features = ["macros","runtime-tokio-rustls","sqlite", "mysql", "postgres", "decimal", "chrono"]}
+#sthash = "0.2.11"
+tempfile = "3.2.0"
+#thiserror = "1.0.29"
+# tikv-client = { git = "https://github.com/tikv/client-rust.git" }

LICENSE

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+MIT License
+
+Copyright (c) 2020-2021 Jesús Pérez Lorenzo
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# Data Stores Defs Library
+
+## Rust Library to define and manage [Data Stores](https://en.wikipedia.org/wiki/Data_store) for **LibreClouds** [Klouds](https://rlung.librecloud.online/LibreCloud/Klouds#klouds)
+
+Part of the following developments:
+
+- [CloudMandala](https://rlung.librecloud.online/LibreCloud/CloudMandala#cloudmandala)
+- [Zteron](https://rlung.librecloud.online/LibreCloud/CloudMandala#cloudmandala)
+
+It includes definitions and functions for the following [Data Stores](https://en.wikipedia.org/wiki/Data_store):
+
+- Redis
+- MySQL
+- Postgres 
+- Sqlite
+- Slab
+
+
+### How to use
+
+1 - Clone or download this lib in a path, better outside of target development
+
+2 - Get current version from <u>Cargo.toml</u>
+
+3 - Include a line like the one below in <u>target development Cargo.toml</u> (adjust version & path) and **use** whatever is need.
+
+```toml
+datastores = { version = "0.1.0", path = "../lib/datastores/defs" }
+```
+
+## Author
+
+- [Jesús Pérez](https://info.jesusperez.pro).
+
+## License
+
+MIT

src/defs.rs

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+use serde::{Serialize,Deserialize};
+use std::fmt;
+
+#[derive(Clone, Copy, Debug, PartialEq, Serialize, Deserialize)]
+/// `DataStore` options
+pub enum DataStore {
+	File,
+  Mysql,    // (sqlx::MySqlPool),
+  Postgres, // (sqlx::PgPool),
+  Sqlite,   // (sqlx::SqlitePool),
+  Redis,    // (redis::Client),
+  // Tikv,     // (tikv::RawClient),
+  Slab,     // (Storage),
+  Unknown,
+}
+
+pub type OptionDataStore = Option<DataStore>;
+
+impl Default for DataStore {
+  fn default() -> Self {
+    DataStore::Unknown
+  }
+}
+impl DataStore {
+  /// Get `DataStore`from String to enum
+  #[must_use]
+  pub fn get_from(str: String) -> DataStore {
+    match str.as_str() {
+      "file" | "File" => DataStore::File,
+      "mysql" | "Mysql" | "MySql" => DataStore::Mysql,
+      "postgres" | "Postgres" | "pg" => DataStore::Postgres,
+      "sqlite" | "Sqlite" => DataStore::Sqlite,
+      "redis" | "Redis" => DataStore::Redis,
+      // "tikv" | "Tikv" => DataStore::Tikv,
+      "slab" | "Slab" => DataStore::Slab,
+      _ => DataStore::Unknown,
+    }
+  }
+}
+
+#[allow(clippy::pattern_type_mismatch)]
+impl fmt::Display for DataStore {
+  fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+    match self {
+      DataStore::File => write!(f, "file"),
+      DataStore::Mysql => write!(f, "mysql"),
+      DataStore::Postgres => write!(f, "postgres"),
+      DataStore::Sqlite => write!(f, "sqlite"),
+      DataStore::Redis => write!(f, "redis"),
+      // DataStore::Tikv => write!(f, "tikv"),
+      DataStore::Slab => write!(f, "slab"),
+      DataStore::Unknown => write!(f, "Unknown"),
+    }
+  }
+}

src/lib.rs

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+pub mod defs;