native module refactor POC

plugins/dbgate-plugin-mssql/package.json

@@ -31,12 +31,17 @@
     "plugout": "dbgate-plugout dbgate-plugin-mssql"
   },
   "devDependencies": {
+    "webpack": "^5.91.0",
+    "webpack-cli": "^5.1.4"
+  },
+  "dependencies": {
     "async-lock": "^1.2.6",
     "dbgate-plugin-tools": "^1.0.7",
     "dbgate-query-splitter": "^4.11.2",
     "dbgate-tools": "^5.0.0-alpha.1",
-    "tedious": "^18.2.0",
-    "webpack": "^5.91.0",
-    "webpack-cli": "^5.1.4"
+    "tedious": "^18.2.0"
+  },
+  "optionalDependencies": {
+    "msnodesqlv8": "^4.2.1"
   }
 }

plugins/dbgate-plugin-mssql/src/backend/driver.js

@@ -5,15 +5,13 @@ const MsSqlAnalyser = require('./MsSqlAnalyser');
 const createTediousBulkInsertStream = require('./createTediousBulkInsertStream');
 const createNativeBulkInsertStream = require('./createNativeBulkInsertStream');
 const AsyncLock = require('async-lock');
-const nativeDriver = require('./nativeDriver');
 const lock = new AsyncLock();
 const { tediousConnect, tediousQueryCore, tediousReadQuery, tediousStream } = require('./tediousDriver');
-const { nativeConnect, nativeQueryCore, nativeReadQuery, nativeStream } = nativeDriver;
+const { nativeConnect, nativeQueryCore, nativeReadQuery, nativeStream } = require('./nativeDriver');
 const { getLogger } = global.DBGATE_PACKAGES['dbgate-tools'];
 
 const logger = getLogger('mssqlDriver');
 
-let requireMsnodesqlv8;
 let platformInfo;
 let authProxy;
 
@@ -59,7 +57,7 @@ const driver = {
 
   getAuthTypes() {
     const res = [];
-    if (requireMsnodesqlv8) res.push(...windowsAuthTypes);
+    if (platformInfo?.isWindows) res.push(...windowsAuthTypes);
 
     if (authProxy.isAuthProxySupported()) {
       res.push(
@@ -82,7 +80,7 @@ const driver = {
 
   async connect(conn) {
     const { authType } = conn;
-    const connectionType = requireMsnodesqlv8 && (authType == 'sspi' || authType == 'sql') ? 'msnodesqlv8' : 'tedious';
+    const connectionType = platformInfo?.isWindows && (authType == 'sspi' || authType == 'sql') ? 'msnodesqlv8' : 'tedious';
     const client = connectionType == 'msnodesqlv8' ? await nativeConnect(conn) : await tediousConnect(conn);
 
     return {
@@ -172,12 +170,8 @@ const driver = {
 };
 
 driver.initialize = dbgateEnv => {
-  if (dbgateEnv.nativeModules && dbgateEnv.nativeModules.msnodesqlv8) {
-    requireMsnodesqlv8 = dbgateEnv.nativeModules.msnodesqlv8;
-  }
   platformInfo = dbgateEnv.platformInfo;
   authProxy = dbgateEnv.authProxy;
-  nativeDriver.initialize(dbgateEnv);
 };
 
 module.exports = driver;

plugins/dbgate-plugin-mssql/src/backend/nativeDriver.js

@@ -1,7 +1,6 @@
 const _ = require('lodash');
 const stream = require('stream');
 const makeUniqueColumnNames = require('./makeUniqueColumnNames');
-let requireMsnodesqlv8;
 const { extractDbNameFromComposite } = global.DBGATE_PACKAGES['dbgate-tools'];
 
 // async function nativeQueryCore(pool, sql, options) {
@@ -24,7 +23,7 @@ const { extractDbNameFromComposite } = global.DBGATE_PACKAGES['dbgate-tools'];
 let msnodesqlv8Value;
 function getMsnodesqlv8() {
   if (!msnodesqlv8Value) {
-    msnodesqlv8Value = requireMsnodesqlv8();
+    msnodesqlv8Value = require('msnodesqlv8');
   }
   return msnodesqlv8Value;
 }
@@ -225,16 +224,9 @@ async function nativeStream(dbhan, sql, options) {
   });
 }
 
-const initialize = dbgateEnv => {
-  if (dbgateEnv.nativeModules && dbgateEnv.nativeModules.msnodesqlv8) {
-    requireMsnodesqlv8 = dbgateEnv.nativeModules.msnodesqlv8;
-  }
-};
-
 module.exports = {
   nativeConnect,
   nativeQueryCore,
   nativeReadQuery,
   nativeStream,
-  initialize,
 };

plugins/dbgate-plugin-mssql/webpack-backend.config.js

@@ -17,6 +17,10 @@ var config = {
   // optimization: {
   //   minimize: false,
   // },
+
+  externals: {
+    msnodesqlv8: 'commonjs msnodesqlv8',
+  },
 };
 
 module.exports = config;