113 lines
3.9 KiB
Rust
113 lines
3.9 KiB
Rust
use flaredb_client::RdbClient;
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use flaredb_proto::sqlrpc::sql_service_server::SqlService as SqlServiceTrait;
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use flaredb_proto::sqlrpc::{
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DdlResult, DmlResult, QueryResult as ProtoQueryResult, Row, SqlRequest, SqlResponse,
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SqlValue as ProtoValue,
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};
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use flaredb_sql::executor::{ExecutionResult, SqlExecutor};
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use flaredb_sql::types::Value;
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use std::sync::Arc;
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use tokio::sync::Mutex;
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use tonic::{Request, Response, Status};
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pub struct SqlServiceImpl {
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/// Address of the local FlareDB server
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server_addr: String,
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/// ChainFire/PD endpoints used for region-aware routing
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pd_endpoints: Vec<String>,
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}
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impl SqlServiceImpl {
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pub fn new(server_addr: String, pd_endpoints: Vec<String>) -> Self {
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Self {
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server_addr,
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pd_endpoints,
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}
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}
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fn value_to_proto(value: &Value) -> ProtoValue {
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match value {
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Value::Null => ProtoValue {
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value: None,
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is_null: true,
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},
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Value::Integer(i) => ProtoValue {
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value: Some(flaredb_proto::sqlrpc::sql_value::Value::IntValue(*i)),
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is_null: false,
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},
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Value::Text(s) => ProtoValue {
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value: Some(flaredb_proto::sqlrpc::sql_value::Value::TextValue(
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s.clone(),
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)),
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is_null: false,
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},
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Value::Boolean(b) => ProtoValue {
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value: Some(flaredb_proto::sqlrpc::sql_value::Value::BoolValue(*b)),
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is_null: false,
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},
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Value::Timestamp(ts) => ProtoValue {
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value: Some(flaredb_proto::sqlrpc::sql_value::Value::TimestampValue(*ts)),
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is_null: false,
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},
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}
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}
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}
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#[tonic::async_trait]
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impl SqlServiceTrait for SqlServiceImpl {
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async fn execute(&self, request: Request<SqlRequest>) -> Result<Response<SqlResponse>, Status> {
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let req = request.into_inner();
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// Use PD-backed routing so SQL works for both strong and eventual namespaces.
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let client = RdbClient::connect_with_pd_namespace(
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self.server_addr.clone(),
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self.pd_endpoints.join(","),
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req.namespace.clone(),
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)
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.await
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.map_err(|e| Status::internal(format!("Failed to connect to FlareDB: {}", e)))?;
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// Create executor
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let executor = SqlExecutor::new(Arc::new(Mutex::new(client)));
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// Execute SQL
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let result = executor
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.execute(&req.sql)
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.await
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.map_err(|e| Status::internal(format!("SQL execution error: {}", e)))?;
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// Convert result to protobuf response
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let response = match result {
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ExecutionResult::DdlSuccess(message) => SqlResponse {
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result: Some(flaredb_proto::sqlrpc::sql_response::Result::DdlResult(
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DdlResult { message },
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)),
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},
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ExecutionResult::DmlSuccess(rows_affected) => SqlResponse {
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result: Some(flaredb_proto::sqlrpc::sql_response::Result::DmlResult(
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DmlResult { rows_affected },
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)),
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},
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ExecutionResult::Query(query_result) => {
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let rows: Vec<Row> = query_result
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.rows
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.iter()
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.map(|row_values| Row {
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values: row_values.iter().map(Self::value_to_proto).collect(),
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})
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.collect();
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SqlResponse {
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result: Some(flaredb_proto::sqlrpc::sql_response::Result::QueryResult(
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ProtoQueryResult {
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columns: query_result.columns.to_vec(),
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rows,
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},
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)),
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}
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} // Errors are returned via Result::Err and handled by .map_err() above
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};
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Ok(Response::new(response))
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}
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}
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