snowflake connector handles timeout and abortsignal

Signed-off-by: Carina Koo <carina@datairis.io>

Author: carinakoo8

packages/malloy-db-snowflake/src/snowflake_connection.ts

@@ -63,6 +63,9 @@ export interface SnowflakeConnectionOptions {
   scratchSpace?: namespace;
 
   queryOptions?: RunSQLOptions;
+
+  // Timeout for the statement
+  timeoutMs?: number;
 }
 
 type PathChain =
@@ -207,6 +210,11 @@ class SnowArray extends SnowField {
   }
 }
 
+/**
+ * Default statement timeoutMs value, 10 Mins
+ */
+const TIMEOUT_MS = 1000 * 60 * 10;
+
 export class SnowflakeConnection
   extends BaseConnection
   implements
@@ -221,6 +229,7 @@ export class SnowflakeConnection
   // the database & schema where we do temporary operations like creating a temp table
   private scratchSpace?: namespace;
   private queryOptions: RunSQLOptions;
+  private timeoutMs: number;
 
   constructor(
     public readonly name: string,
@@ -235,6 +244,7 @@ export class SnowflakeConnection
     this.executor = new SnowflakeExecutor(connOptions, options?.poolOptions);
     this.scratchSpace = options?.scratchSpace;
     this.queryOptions = options?.queryOptions ?? {};
+    this.timeoutMs = options?.timeoutMs ?? TIMEOUT_MS;
   }
 
   get dialectName(): string {
@@ -273,10 +283,10 @@ export class SnowflakeConnection
 
   public async runSQL(
     sql: string,
-    options?: RunSQLOptions
+    options: RunSQLOptions = {}
   ): Promise<MalloyQueryData> {
     const rowLimit = options?.rowLimit ?? this.queryOptions?.rowLimit;
-    let rows = await this.executor.batch(sql);
+    let rows = await this.executor.batch(sql, options, this.timeoutMs);
     if (rowLimit !== undefined && rows.length > rowLimit) {
       rows = rows.slice(0, rowLimit);
     }

packages/malloy-db-snowflake/src/snowflake_executor.ts

@@ -56,6 +56,7 @@ export interface ConnectionConfigFile {
 //   return ret;
 // }
 
+
 export class SnowflakeExecutor {
   private static defaultPoolOptions_: PoolOptions = {
     min: 1,
@@ -149,15 +150,25 @@ export class SnowflakeExecutor {
     });
   }
 
-  public async _execute(sqlText: string, conn: Connection): Promise<QueryData> {
-    return new Promise((resolve, reject) => {
-      const _statment = conn.execute({
+  public async _execute(sqlText: string, conn: Connection, options?: RunSQLOptions, timeoutMs?: number): Promise<QueryData> {
+    let _statement: RowStatement | undefined;
+    const cancel = () => {
+      _statement?.cancel();
+    }
+    const timeoutId = timeoutMs ? setTimeout(cancel, timeoutMs) : undefined;
+    options?.abortSignal?.addEventListener('abort', cancel);
+    return await new Promise((resolve, reject) => {
+      _statement = conn.execute({
         sqlText,
         complete: (
           err: SnowflakeError | undefined,
           _stmt: RowStatement,
           rows?: QueryData
         ) => {
+          options?.abortSignal?.removeEventListener('abort', cancel);
+          if (timeoutId) {
+            clearTimeout(timeoutId);
+          }
           if (err) {
             reject(err);
           } else if (rows) {
@@ -186,10 +197,10 @@ export class SnowflakeExecutor {
     );
   }
 
-  public async batch(sqlText: string): Promise<QueryData> {
+  public async batch(sqlText: string, options?: RunSQLOptions, timeoutMs?: number): Promise<QueryData> {
     return await this.pool_.use(async (conn: Connection) => {
       await this._setSessionParams(conn);
-      return await this._execute(sqlText, conn);
+      return await this._execute(sqlText, conn, options, timeoutMs);
     });
   }