Mostly fumbling with error handling.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@4317 ed5197a5-7fde-0310-b194-c3ffbd925b24

apps/docs/todo.md

@@ -16,9 +16,7 @@
 - / => Something good.
 - update docs
 - audit + document API exposed to apps
-- sqlStream => sqlExec or something
 - fix weird HTTP warnings
-- ssb from child process?
 - channels
 - placeholder/missing images
 - no denial of service
@@ -57,6 +55,8 @@
 - keep working on good error feedback
 - build for windows
 - installable apps (bring back an app message?)
+- sqlStream => sqlExec or something
+- !ssb from child process?
 
 ## Done
 - update LICENSE

core/core.js

@@ -79,8 +79,8 @@ function printError(out, error) {
 		out.print(error.fileName + ":" + error.lineNumber + ": " + error.message);
 		out.print(error.stackTrace);
 	} else {
-		for (let i in error) {
-			out.print(i);
+		for (let [k, v] of Object.entries(error)) {
+			out.print(k, v);
 		}
 		out.print(error.toString());
 	}
@@ -360,10 +360,10 @@ async function getProcessBlob(blobId, key, options) {
 					if (process.app) {
 						process.app.makeFunction(['error'])(error);
 					} else {
-						print(error);
+						printError({print: print}, error);
 					}
 				} catch (e) {
-					print(e);
+					printError({print: print}, error);
 				}
 			};
 			imports.ssb = Object.fromEntries(Object.keys(ssb).map(key => [key, ssb[key].bind(ssb)]));
@@ -455,19 +455,23 @@ async function getProcessBlob(blobId, key, options) {
 				printError({print: print}, e);
 			}
 			broadcastEvent('onSessionBegin', [getUser(process, process)]);
-			resolveReady(process);
 			if (process.app) {
 				process.app.send({action: "ready"});
 				process.sendPermissions();
 			}
 			await process.task.execute({name: appSourceName, source: appSource});
+			resolveReady(process);
 		} catch (error) {
+			if (process.app) {
 				if (process?.task?.onError) {
 					process.task.onError(error);
 				} else {
 					printError({print: print}, error);
 				}
-			rejectReady();
+			} else {
+				printError({print: print}, error);
+			}
+			rejectReady(error);
 		}
 	}
 	return process;
@@ -605,7 +609,10 @@ async function useAppHandler(response, handler_blob_id, path) {
 	let promise = new Promise(async function(resolve, reject) {
 		do_resolve = resolve;
 	});
-	let process = await getProcessBlob(handler_blob_id, 'handler_' + g_handler_index++, {
+	let process;
+	let result;
+	try {
+		process = await getProcessBlob(handler_blob_id, 'handler_' + g_handler_index++, {
 			script: 'handler.js',
 			imports: {
 				request: {
@@ -614,8 +621,14 @@ async function useAppHandler(response, handler_blob_id, path) {
 				respond: do_resolve,
 			},
 		});
-	let result = await promise;
+		await process.ready;
+
+		result = await promise;
+	} finally {
+		if (process?.task) {
 			await process.task.kill();
+		}
+	}
 	return result;
 }
 
@@ -777,8 +790,16 @@ async function blobHandler(request, response, blobId, uri) {
 		let app_object = JSON.parse(utf8Decode(await getBlobOrContent(app_id)));
 		id = app_object.files[uri.substring(1)];
 		if (!id && app_object.files['handler.js']) {
-			let answer = await useAppHandler(response, app_id, uri.substring(1));
-			if (typeof answer.data == 'string') {
+			let answer;
+			try {
+				answer = await useAppHandler(response, app_id, uri.substring(1));
+			} catch (error) {
+				data = utf8Encode(`Internal Server Error\n\n${error?.message}\n${error?.stack}`);
+				response.writeHead(500, {'Content-Type': 'text/plain; charset=utf-8', 'Content-Length': data.length});
+				response.end(data);
+				return;
+			}
+			if (answer && typeof answer.data == 'string') {
 				answer.data = utf8Encode(answer.data);
 			}
 			sendData(response, answer?.data, answer?.content_type, {

src/ssb.js.c

@@ -992,7 +992,6 @@ static JSValue _tf_ssb_createTunnel(JSContext* context, JSValueConst this_val, i
 	tf_ssb_connection_t* connection = tf_ssb_connection_get(ssb, portal_id);
 	if (connection)
 	{
-		// let request_number = await tfrpc.rpc.connectionSendJson(portal, {name: ['tunnel', 'connect'], args: [{portal: portal, target: target}], type: 'duplex'});
 		int32_t request_number = tf_ssb_connection_next_request_number(connection);
 		JSValue message = JS_NewObject(context);
 		JSValue name = JS_NewArray(context);