Add standalone option

Author: wiltsecarpenter

.eslintrc.js

@@ -0,0 +1,26 @@
+{
+  "parserOptions": {
+    "sourceType": "module",
+    "ecmaVersion": 2018
+  },
+  "env": {
+    "node": true,
+    "es6": true
+  },
+  "extends": ["eslint:recommended", "plugin:prettier/recommended"],
+  "rules": {
+    "no-ex-assign": "off",
+    "no-var":"error",
+    "object-shorthand": ["warn", "always"],
+    "prettier/prettier": ["warn", {"bracketSpacing": false, "trailingComma": "es5"}]
+  },
+  "overrides": [
+    {
+      "files": ["*.test.js"],
+      "env": {
+        "jest": true
+      }
+    }
+  ],
+  "root": true
+}

.eslintrc.json

@@ -17,15 +17,20 @@ argv
     name,
     start
   )
-  .command(`add <name>`, `Add a new database proxy configuration`, name, add)
+  .command(
+    `add <name> [--standalone]`,
+    `Add a new database proxy configuration`,
+    name,
+    add
+  )
   .command(
     `remove <name>`,
     `Remove an existing database proxy configuration`,
     name,
     remove
   )
   .command(
-    `reset <name>`,
+    `reset <name> [--standalone]`,
     `Reset the shared secret for an existing database proxy configuration`,
     name,
     reset
@@ -40,6 +45,10 @@ argv
     `sslkey`,
     `Set the SSL private key location for an HTTPS database proxy`
   )
+  .describe(
+    `standalone`,
+    `Standalone mode: create a secret for standalone clients`
+  )
   .example(`$0 start localdb`, `Run an HTTP database proxy named "localdb"`)
   .example(
     `$0 start localssl --sslkey ../ssl/localhost.key --sslcert ../ssl/localhost.crt`,

bin/observable-database-proxy.js

@@ -1,14 +1,16 @@
 /* eslint-disable no-console */
 
+import {randomBytes} from "crypto";
 import {createInterface} from "readline";
 import open from "open";
 import {
   readConfig,
   readDecodedConfig,
   writeConfig,
   decodeSecret,
+  encodeSecret,
 } from "./config.js";
-import {server} from "./server.js";
+import {server, types} from "./server.js";
 import {exit} from "./errors.js";
 
 export function start(argv) {
@@ -17,7 +19,7 @@ export function start(argv) {
 }
 
 export async function add(argv, reset = false) {
-  const {name, sslkey, sslcert} = argv;
+  const {name, sslkey, sslcert, standalone} = argv;
   let config = readConfig();
   let url;
   let token;
@@ -39,7 +41,12 @@ export async function add(argv, reset = false) {
   if (reset) {
     if (!config[name]) exit(`No configuration found for "${name}"`);
     url = config[name].url;
-  } else {
+    token = config[name].token;
+    server_host = config[name].server_host;
+    path = config[name].path;
+    username = config[name].username;
+    password = config[name].password;
+  } else if (!standalone) {
     const wantsSSL = sslkey || sslcert;
     // open browser
     const observable =
@@ -53,8 +60,50 @@ export async function add(argv, reset = false) {
     );
   }
 
-  // paste secret (secret, origin, name, type, host, port, ssl)
-  const secret = await question("Secret: ");
+  let secret;
+  if (standalone) {
+    let {type, host, origin, port, ssl} = reset
+      ? decodeSecret(config[name].secret)
+      : {};
+    if (!type) {
+      for (;;) {
+        type = await question("Database type: ");
+        if (types.includes(type)) break;
+        console.log(`Invalid type, should be one of: ${types.join(", ")}`);
+      }
+    } else if (!types.includes(type)) {
+      exit(`Invalid type, should be one of: ${type.join(", ")}`);
+    }
+    if (!host || !port || !ssl) {
+      const proxyUrl = new URL(
+        (await question(
+          "Observable database proxy Url [http://127.0.0.1:2899]:"
+        )) || "http://127.0.0.1:2899"
+      );
+      host = proxyUrl.hostname;
+      port = proxyUrl.port;
+      ssl = proxyUrl.protocol !== "https" ? "disabled" : "required";
+    }
+    if (!origin) {
+      origin =
+        (await question("Standalone server origin [http://127.0.0.1:3000]:")) ||
+        "http://127.0.0.1:3000";
+    }
+
+    const secretPayload = {
+      name,
+      type,
+      host,
+      port,
+      ssl,
+      origin,
+      secret: randomBytes(32).toString("hex"),
+    };
+    secret = encodeSecret(secretPayload);
+  } else {
+    // paste secret (secret, origin, name, type, host, port, ssl)
+    secret = await question("Secret: ");
+  }
   const decoded = decodeSecret(secret);
   if (decoded.name !== name)
     return exit(`Name mismatch: "${decoded.name}" (server), "${name} (proxy)"`);
@@ -104,6 +153,8 @@ export async function add(argv, reset = false) {
   writeConfig(config);
 
   console.log(`Configuration ${reset ? `reset` : `added`} for "${name}"`);
+  if (standalone)
+    console.log(`Secret for DabaseClient("${name}"):\ndb:${name}:${secret}`);
 }
 
 export function reset(argv) {

lib/commands.js

@@ -56,3 +56,8 @@ export function decodeSecret(secret) {
     exit(error);
   }
 }
+
+export function encodeSecret(arg) {
+  const buffer = Buffer.from(JSON.stringify(arg)).toString("base64");
+  return buffer;
+}

lib/config.js

@@ -16,9 +16,19 @@ import oracle from "./oracle.js";
 import databricks from "./databricks.js";
 import logger from "../middleware/logger.js";
 
+export const types = [
+  "databricks",
+  "mysql",
+  "mssql",
+  "postgres",
+  "snowflake",
+  "oracle",
+  "mongosql",
+];
+
 export async function server(config, argv) {
   const development = process.env.NODE_ENV === "development";
-  const developmentOrigin = "https://worker.test:5000";
+  const developmentOrigin = "https://login.worker.test:5000";
 
   const {
     name,

lib/server.js

@@ -8,7 +8,7 @@ export const validateQueryPayload = ajv.compile({
   required: ["sql"],
   properties: {
     sql: {type: "string", minLength: 1, maxLength: 32 * 1000},
-    params: {type: ["object", "array"]},
+    params: {anyOf: [{type: ["object"]}, {type: ["array"]}]}
   },
 });
 export const validateDescribeColumnsPayload = ajv.compile({

lib/validate.js

@@ -36,10 +36,14 @@
     "@babel/preset-env": "^7.19.4",
     "@babel/register": "^7.18.9",
     "chai": "^4.3.6",
+    "eslint": "^8.50.0",
+    "eslint-config-prettier": "^9.0.0",
+    "eslint-plugin-prettier": "^5.0.0",
     "mocha": "^10.1.0",
     "mock-req": "^0.2.0",
     "mock-res": "^0.6.0",
     "nodemon": "^1.19.1",
+    "prettier": "^3.0.3",
     "wait-on": "^6.0.1"
   },
   "peerDependencies": {