feat(Snowflake Node): Add support for Key-Pair authentication (#14833)

packages/nodes-base/nodes/Snowflake/GenericFunctions.ts

@@ -1,5 +1,43 @@
+import pick from 'lodash/pick';
 import type snowflake from 'snowflake-sdk';
 
+const commonConnectionFields = [
+	'account',
+	'database',
+	'schema',
+	'warehouse',
+	'role',
+	'clientSessionKeepAlive',
+] as const;
+
+export type SnowflakeCredential = Pick<
+	snowflake.ConnectionOptions,
+	(typeof commonConnectionFields)[number]
+> &
+	(
+		| {
+				authentication: 'password';
+				username?: string;
+				password?: string;
+		  }
+		| {
+				authentication: 'keyPair';
+				privateKey: string;
+		  }
+	);
+
+export const getConnectionOptions = (credential: SnowflakeCredential) => {
+	const connectionOptions: snowflake.ConnectionOptions = pick(credential, commonConnectionFields);
+	if (credential.authentication === 'keyPair') {
+		connectionOptions.authenticator = 'SNOWFLAKE_JWT';
+		connectionOptions.privateKey = credential.privateKey;
+	} else {
+		connectionOptions.username = credential.username;
+		connectionOptions.password = credential.password;
+	}
+	return connectionOptions;
+};
+
 export async function connect(conn: snowflake.Connection) {
 	return await new Promise<void>((resolve, reject) => {
 		conn.connect((error) => (error ? reject(error) : resolve()));