single database configuration

package.json

@@ -7,6 +7,7 @@
   "scripts": {
     "start:api": "yarn workspace dbgate-api start",
     "start:api:portal": "yarn workspace dbgate-api start:portal",
+    "start:api:covid": "yarn workspace dbgate-api start:covid",
     "start:web": "yarn workspace dbgate-web start",
     "start:sqltree": "yarn workspace dbgate-sqltree start",
     "start:tools": "yarn workspace dbgate-tools start",

packages/api/.covid-env

@@ -0,0 +1,10 @@
+CONNECTIONS=mysql
+
+LABEL_mysql=MySql
+SERVER_mysql=dbgate.org
+USER_mysql=reader
+PASSWORD_mysql=CovidReader2020
+PORT_mysql=3326
+ENGINE_mysql=mysql@dbgate-plugin-mysql
+SINGLE_CONNECTION=mysql
+SINGLE_DATABASE=covid

packages/api/package.json

@@ -45,6 +45,7 @@
   "scripts": {
     "start": "nodemon src/index.js",
     "start:portal": "env-cmd nodemon src/index.js",
+    "start:covid": "env-cmd -f .covid-env nodemon src/index.js",
     "ts": "tsc",
     "build": "webpack"
   },

packages/api/src/controllers/config.js

@@ -15,6 +15,13 @@ module.exports = {
       runAsPortal: !!process.env.CONNECTIONS,
       toolbar,
       startupPages,
+      singleDatabase:
+        process.env.SINGLE_CONNECTION && process.env.SINGLE_DATABASE
+          ? {
+              conid: process.env.SINGLE_CONNECTION,
+              database: process.env.SINGLE_DATABASE,
+            }
+          : null,
     };
   },
 };

packages/web/src/utility/globalState.js

@@ -1,7 +1,7 @@
 import _ from 'lodash';
 import React from 'react';
 import useStorage from './useStorage';
-import { useConnectionInfo, useConfig } from './metadataLoaders';
+import { useConnectionInfo, useConfig, getConnectionInfo } from './metadataLoaders';
 import usePrevious from './usePrevious';
 import useNewQuery from '../query/useNewQuery';
 import useShowModal from '../modals/showModal';
@@ -48,11 +48,11 @@ function createStorageState(storageKey, defaultValue) {
 const [CurrentWidgetProvider, useCurrentWidget, useSetCurrentWidget] = createGlobalState('database');
 export { CurrentWidgetProvider, useCurrentWidget, useSetCurrentWidget };
 
-const [CurrentDatabaseProvider, useCurrentDatabase, useSetCurrentDatabaseCore] = createGlobalState(null);
+const [CurrentDatabaseProvider, useCurrentDatabaseCore, useSetCurrentDatabaseCore] = createGlobalState(null);
 
 function useSetCurrentDatabase() {
   const setDb = useSetCurrentDatabaseCore();
-  const db = useCurrentDatabase();
+  const db = useCurrentDatabaseCore();
   return (value) => {
     if (_.get(db, 'name') !== _.get(value, 'name') || _.get(db, 'connection._id') != _.get(value, 'connection._id')) {
       setDb(value);
@@ -60,6 +60,33 @@ function useSetCurrentDatabase() {
   };
 }
 
+function useCurrentDatabase() {
+  const config = useConfig();
+  const db = useCurrentDatabaseCore();
+
+  const [connection, setConnection] = React.useState(null);
+  const loadSingleConnection = async () => {
+    if (config && config.singleDatabase) {
+      const conn = await getConnectionInfo({ conid: config.singleDatabase.conid });
+      setConnection(conn);
+    }
+  };
+  React.useEffect(() => {
+    loadSingleConnection();
+  }, [config]);
+
+  if (config && config.singleDatabase) {
+    if (connection) {
+      return {
+        connection,
+        name: config.singleDatabase.database,
+      };
+    }
+    return null;
+  }
+  return db;
+}
+
 export { CurrentDatabaseProvider, useCurrentDatabase, useSetCurrentDatabase };
 
 const [OpenedTabsProvider, useOpenedTabs, useSetOpenedTabs] = createStorageState('openedTabs', []);

packages/web/src/widgets/DatabaseWidget.js

@@ -14,6 +14,7 @@ import {
   useServerStatus,
   useDatabaseStatus,
   useDatabaseInfo,
+  useConfig,
 } from '../utility/metadataLoaders';
 import {
   SearchBoxWrapper,
@@ -131,7 +132,11 @@ function SqlObjectListWrapper() {
   const db = useCurrentDatabase();
 
   if (!db) {
-    return <ErrorInfo message="Database not selected" icon="img alert" />;
+    return (
+      <WidgetsInnerContainer>
+        <ErrorInfo message="Database not selected" icon="img alert" />
+      </WidgetsInnerContainer>
+    );
   }
   const { name, connection } = db;
 
@@ -141,11 +146,14 @@ function SqlObjectListWrapper() {
 }
 
 export default function DatabaseWidget() {
+  const config = useConfig();
   return (
     <WidgetColumnBar>
-      <WidgetColumnBarItem title="Connections" name="connections" height="50%">
-        <ConnectionList />
-      </WidgetColumnBarItem>
+      {!config.singleDatabase && (
+        <WidgetColumnBarItem title="Connections" name="connections" height="50%">
+          <ConnectionList />
+        </WidgetColumnBarItem>
+      )}
       <WidgetColumnBarItem title="Tables, views, functions" name="dbObjects">
         <SqlObjectListWrapper />
       </WidgetColumnBarItem>