63 lines
1.5 KiB
Rust
63 lines
1.5 KiB
Rust
use serde::{Deserialize, Serialize};
|
||
use std::collections::HashMap;
|
||
|
||
// 协议：Haskell 与 Rust 之间的请求 / 响应类型。
|
||
|
||
/// 一行：列名到 JSON 值
|
||
pub type Row = HashMap<String, serde_json::Value>;
|
||
|
||
#[derive(Debug, Clone, Copy, Serialize, Deserialize, PartialEq, Eq)]
|
||
#[serde(rename_all = "lowercase")]
|
||
/// 列类型（对应 Haskell 的 TInt / TStr / TBool）
|
||
pub enum ColumnType {
|
||
Int,
|
||
Str,
|
||
Bool,
|
||
}
|
||
|
||
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
|
||
/// 一列的 schema
|
||
pub struct SchemaColumn {
|
||
pub name: String,
|
||
pub ty: ColumnType,
|
||
}
|
||
|
||
#[derive(Debug, Serialize, Deserialize)]
|
||
#[serde(tag = "method", rename_all = "snake_case")]
|
||
/// 请求：method 字段决定类型
|
||
pub enum Request {
|
||
Ping,
|
||
Scan { table: String },
|
||
Insert {
|
||
table: String,
|
||
row: Row,
|
||
#[serde(default)]
|
||
key: Option<i64>,
|
||
},
|
||
LookupByIndex { table: String, key: i64 },
|
||
ReplaceAll { table: String, rows: Vec<Row> },
|
||
ListTables,
|
||
DescribeTable { table: String },
|
||
CreateTable {
|
||
table: String,
|
||
columns: Vec<SchemaColumn>,
|
||
},
|
||
DropTable { table: String },
|
||
}
|
||
|
||
#[derive(Debug, Serialize, Deserialize)]
|
||
#[serde(tag = "status", rename_all = "lowercase")]
|
||
/// 响应：status 字段决定类型
|
||
pub enum Response {
|
||
Pong,
|
||
Rows { rows: Vec<Row> },
|
||
Tables { tables: Vec<String> },
|
||
Schema {
|
||
columns: Vec<SchemaColumn>,
|
||
#[serde(default)]
|
||
row_count: u64,
|
||
},
|
||
Ok,
|
||
Error { message: String },
|
||
}
|