support app framework base library in assemblyscript (#164)

assembly-script/samples/event_publisher.ts

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+/*
+ * Copyright (C) 2019 Intel Corporation.  All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ */
+
+// The entry file of your WebAssembly module.
+import * as console from "../wamr_app_lib/console"
+import * as timer from "../wamr_app_lib/timer"
+import * as request from "../wamr_app_lib/request"
+
+function publish_overheat_event(): void {
+    var payload = String.UTF8.encode("warning: temperature is over high");
+    request.publish_event("alert/overheat", 0, payload, payload.byteLength);
+}
+
+export function on_init() : void {
+    timer.setInterval(publish_overheat_event, 2000);
+}
+
+export function on_destroy() : void {
+
+}
+
+
+/* Function below are requred by wamr runtime, don't remove or modify them */
+export function _on_timer_callback(on_timer_id: i32): void {
+    timer.on_timer_callback(on_timer_id);
+}
+
+export function _on_request(buffer_offset: i32, size: i32): void {
+    request.on_request(buffer_offset, size);
+}
+
+export function _on_response(buffer_offset : i32, size: i32): void {
+    request.on_response(buffer_offset, size);
+}

assembly-script/samples/event_subscriber.ts

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+/*
+ * Copyright (C) 2019 Intel Corporation.  All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ */
+
+// The entry file of your WebAssembly module.
+import * as console from "../wamr_app_lib/console"
+import * as timer from "../wamr_app_lib/timer"
+import * as request from "../wamr_app_lib/request"
+
+export function on_init() : void {
+    request.subscribe_event("alert/overheat", (req) => {
+        console.log("### user over heat event handler called:");
+
+        console.log("");
+        console.log("    " + String.UTF8.decode(req.payload) + "\n");
+    })
+}
+
+export function on_destroy() : void {
+
+}
+
+
+/* Function below are requred by wamr runtime, don't remove or modify them */
+export function _on_timer_callback(on_timer_id: i32): void {
+    timer.on_timer_callback(on_timer_id);
+}
+
+export function _on_request(buffer_offset: i32, size: i32): void {
+    request.on_request(buffer_offset, size);
+}
+
+export function _on_response(buffer_offset : i32, size: i32): void {
+    request.on_response(buffer_offset, size);
+}

assembly-script/samples/request_handler.ts

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+/*
+ * Copyright (C) 2019 Intel Corporation.  All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ */
+
+ // The entry file of your WebAssembly module.
+import * as console from "../wamr_app_lib/console"
+import * as timer from "../wamr_app_lib/timer"
+import * as request from "../wamr_app_lib/request"
+
+export function on_init() : void {
+    request.register_resource_handler("/test", (req) => {
+        console.log("### Req: /test  " + String.UTF8.decode(req.payload));
+
+        console.log("    request payload:");
+        console.log("    " + String.UTF8.decode(req.payload) + "\n");
+
+        var resp = request.make_response_for_request(req);
+        resp.set_payload(String.UTF8.encode("Ok"), 2);
+        request.api_response_send(resp);
+    });
+}
+
+export function on_destroy() : void {
+
+}
+
+
+/* Function below are requred by wamr runtime, don't remove or modify them */
+export function _on_timer_callback(on_timer_id: i32): void {
+    timer.on_timer_callback(on_timer_id);
+}
+
+export function _on_request(buffer_offset: i32, size: i32): void {
+    request.on_request(buffer_offset, size);
+}
+
+export function _on_response(buffer_offset : i32, size: i32): void {
+    request.on_response(buffer_offset, size);
+}

assembly-script/samples/request_sender.ts

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+/*
+ * Copyright (C) 2019 Intel Corporation.  All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ */
+
+// The entry file of your WebAssembly module.
+import * as console from "../wamr_app_lib/console"
+import * as timer from "../wamr_app_lib/timer"
+import * as request from "../wamr_app_lib/request"
+
+export function on_init() : void {
+    var payload = String.UTF8.encode("test message");
+    request.post("/test", payload, payload.byteLength, "", (resp) => {
+        if (resp != null) {
+            console.log("Post Success");
+
+            if (resp.payload != null) {
+                console.log("    response payload:")
+                console.log("    " + String.UTF8.decode(resp.payload!) + "\n");
+            }
+        }
+        else
+            console.log("Post Timeout");
+    });
+}
+
+export function on_destroy() : void {
+
+}
+
+
+/* Function below are requred by wamr runtime, don't remove or modify them */
+export function _on_timer_callback(on_timer_id: i32): void {
+    timer.on_timer_callback(on_timer_id);
+}
+
+export function _on_request(buffer_offset: i32, size: i32): void {
+    request.on_request(buffer_offset, size);
+}
+
+export function _on_response(buffer_offset : i32, size: i32): void {
+    request.on_response(buffer_offset, size);
+}

assembly-script/samples/timer.ts

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+/*
+ * Copyright (C) 2019 Intel Corporation.  All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ */
+
+// The entry file of your WebAssembly module.
+import * as console from '../wamr_app_lib/console'
+import * as timer from '../wamr_app_lib/timer'
+
+/* clousure is not implemented yet, we need to declare global variables
+    so that they can be accessed inside a callback function */
+var cnt = 0;
+var my_timer: timer.user_timer;
+
+export function on_init(): void {
+    /* The callback function will be called every 2 second,
+        and will stop after 10 calls */
+    my_timer = timer.setInterval(() => {
+        cnt ++;
+        console.log((cnt * 2).toString() + " seconds passed");
+
+        if (cnt >= 10) {
+            timer.timer_cancel(my_timer);
+            console.log("Stop Timer");
+        }
+    }, 2000);
+}
+
+export function on_destroy(): void {
+
+}
+
+/* Function below are requred by wamr runtime, don't remove or modify them */
+export function _on_timer_callback(on_timer_id: i32): void {
+    timer.on_timer_callback(on_timer_id);
+}

assembly-script/samples/tsconfig.json

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+{
+  "extends": "../node_modules/assemblyscript/std/assembly.json",
+  "include": [
+    "./**/*.ts"
+  ]
+}