new(all): #327 OPEN AS web automation.

packages/basic.gblib/services/GBVMService.ts

@@ -61,10 +61,8 @@ import { GBLogEx } from '../../core.gbapp/services/GBLogEx.js';
  * Basic services for BASIC manipulation.
  */
 export class GBVMService extends GBService {
-
   private static DEBUGGER_PORT = 9222;
 
-
   public async loadDialogPackage(folder: string, min: GBMinInstance, core: IGBCoreService, deployer: GBDeployer) {
     const files = await walkPromise(folder);
 
@@ -276,7 +274,6 @@ export class GBVMService extends GBService {
     });
   }
 
-
   /**
    * Converts General Bots BASIC
    *
@@ -312,7 +309,6 @@ export class GBVMService extends GBService {
    * Executes the converted JavaScript from BASIC code inside execution context.
    */
   public static async callVM(text: string, min: GBMinInstance, step, deployer: GBDeployer, debug: boolean) {
-
     // Creates a class DialogKeywords which is the *this* pointer
     // in BASIC.
 
@@ -362,8 +358,10 @@ export class GBVMService extends GBService {
     sandbox['httpPs'] = '';
     sandbox['pid'] = pid;
 
-    if (GBConfigService.get('GBVM') === 'false') {
+    let result;
+
     try {
+      if (GBConfigService.get('GBVM') === 'false') {
         const vm1 = new NodeVM({
           allowAsync: true,
           sandbox: sandbox,
@@ -377,11 +375,7 @@ export class GBVMService extends GBService {
           }
         });
         const s = new VMScript(code, { filename: scriptPath });
-        let x = vm1.run(s);
-        return x;
-      } catch (error) {
-        throw new Error(`BASIC RUNTIME ERR: ${error.message ? error.message : error}\n Stack:${error.stack}`);
-      }
+        result = vm1.run(s);
       } else {
         const runnerPath = urlJoin(
           process.cwd(),
@@ -393,7 +387,6 @@ export class GBVMService extends GBService {
           'vm2ProcessRunner.js'
         );
 
-      try {
         const { run } = createVm2Pool({
           min: 0,
           max: 0,
@@ -407,12 +400,23 @@ export class GBVMService extends GBService {
           script: runnerPath
         });
 
-        const result = await run(code, { filename: scriptPath, sandbox: sandbox });
-
-        return result;
+        result = await run(code, { filename: scriptPath, sandbox: sandbox });
+      }
     } catch (error) {
       throw new Error(`BASIC RUNTIME ERR: ${error.message ? error.message : error}\n Stack:${error.stack}`);
+    } finally {
+      
+      // Releases previous allocated OPEN semaphores.
+
+      let keys = Object.keys(GBServer.globals.webSessions);
+      for (let i = 0; i < keys.length; i++) {
+        const session = GBServer.globals.webSessions[keys[i]];
+        if (session.pid === pid) {
+          session.semaphore.release();
         }
       }
     }
+
+    return result;
+  }
 }

packages/basic.gblib/services/KeywordsExpressions.ts

@@ -36,7 +36,6 @@
  * Image processing services of conversation to be called by BASIC.
  */
 export class KeywordsExpressions {
-
   private static getParams = (text: string, names) => {
     let ret = {};
     const splitParamsButIgnoreCommasInDoublequotes = (str: string) => {
@@ -74,7 +73,6 @@ export class KeywordsExpressions {
    * Returns the list of BASIC keyword and their JS match.
    */
   public static getKeywords() {
-    
     // Keywords from General Bots BASIC.
 
     let keywords = [];
@@ -140,12 +138,19 @@ export class KeywordsExpressions {
     keywords[i++] = [
       /^\s*open\s*(.*)/gim,
       ($0, $1, $2) => {
-
-        let pos;
         let sessionName;
+        let kind = '';
+        let pos;
+
         if (pos = $1.match(/\s*AS\s*\#/)) {
+          kind = '"AS"';
+        } else if (pos = $1.match(/\s*WITH\s*\#/)) {
+          kind = '"WITH"';
+        }
+
+        if (pos) {
           let part = $1.substr($1.lastIndexOf(pos[0]));
-          sessionName = `"${part.substr(part.indexOf("#") + 1)}"`;
+          sessionName = `"${part.substr(part.indexOf('#') + 1)}"`;
           $1 = $1.substr(0, $1.lastIndexOf(pos[0]));
         }
 
@@ -154,7 +159,7 @@ export class KeywordsExpressions {
         }
         const params = this.getParams($1, ['url', 'username', 'password']);
 
-        return `page = await wa.getPage({pid: pid, sessionName: ${sessionName}, ${params}})`;
+        return `page = await wa.getPage({pid: pid, sessionKind: ${kind}, sessionName: ${sessionName}, ${params}})`;
       }
     ];
 

packages/basic.gblib/services/WebAutomationServices.ts

@@ -50,9 +50,6 @@ import {Mutex, Semaphore, withTimeout} from 'async-mutex';
  * Web Automation services of conversation to be called by BASIC.
  */
 export class WebAutomationServices {
-
-  static semaphoreWithTimeout = withTimeout(new Semaphore(5), 60 * 1000, new Error('new fancy error'));
-
   /**
    * Reference to minimal bot instance.
    */
@@ -124,25 +121,46 @@ export class WebAutomationServices {
    * @example OPEN "https://wikipedia.org"
    */
 
-  public async getPage({ pid, sessionName, url, username, password }) {
+  public async getPage({ pid, sessionKind, sessionName, url, username, password }) {
     GBLog.info(`BASIC: Web Automation GET PAGE ${sessionName ? sessionName : ''} ${url}.`);
 
+    // Semaphore logic to block multiple entries on the same session.
+
     let page;
-    if (url.startsWith('#')) {
-      const [value, release] = await WebAutomationServices.semaphoreWithTimeout.acquire();
+    let session = GBServer.globals.webSessions[sessionName];
+
+    if (session) {
+      const [value, release] = await session.semaphore.acquire();
       try {
+        GBServer.globals.webSessions[sessionName].release = release;
         page = GBServer.globals.webSessions[url.substr(1)];
-      } finally {
+      } catch {
         release();
       }
+    }
+
+    // There is no session yet,
+
+    if (!session && sessionKind === 'AS') {
+      
+      // A new web session is being created.
+
+      GBServer.globals.webSessions[sessionName] = {};
+      GBServer.globals.webSessions[sessionName].pid = pid;
+      GBServer.globals.webSessions[sessionName].page = page;
+      GBServer.globals.webSessions[sessionName].semaphore = withTimeout(
+        new Semaphore(5),
+        60 * 1000,
+        new Error('Error waiting for OPEN keyword.')
+      );
+    }
+
+    if (url.startsWith('#') && sessionKind == 'WITH') {
     } else {
       if (!this.browser) {
         this.browser = await createBrowser(null);
       }
       page = (await this.browser.pages())[0];
-      if (sessionName) {
-        GBServer.globals.webSessions[sessionName] = page;
-      }
       if (username || password) {
         await page.authenticate({ pid, username: username, password: password });
       }