wasm-micro-runtime/test-tools/component-test/suites/01-life-cycle/test-app/05_event_internal_subscriber.c

/*
 * Copyright (C) 2019 Intel Corporation.  All rights reserved.
 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 */

#include "wasm_app.h"
#include "wa-inc/request.h"

uint32 mid;
unsigned long sender;

void
over_heat_event_handler(request_t *request)
{
    response_t response[1];
    attr_container_t *payload;

    payload = attr_container_create("wasm app response payload");
    if (payload == NULL)
        return;

    attr_container_set_string(&payload, "key1", "value1");
    attr_container_set_string(&payload, "key2", "value2");

    response->mid = mid;
    response->reciever = sender;
    set_response(response, CONTENT_2_05, FMT_ATTR_CONTAINER,
                 (const char *)payload,
                 attr_container_get_serialize_length(payload));
    printf("reciver: %lu, mid:%d\n", response->reciever, response->mid);
    api_response_send(response);

    attr_container_destroy(payload);
}

void
res1_handler(request_t *request)
{
    mid = request->mid;
    sender = request->sender;
    api_subscribe_event("alert/overheat", over_heat_event_handler);
}

void
on_init()
{
    /* register resource uri */
    api_register_resource_handler("/res1", res1_handler);
}

void
on_destroy()
{
    /* real destroy work including killing timer and closing sensor is
     * accomplished in wasm app library version of on_destroy() */
}