| /* |
| * Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of the Institute nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * This file is part of the Contiki operating system. |
| */ |
| |
| /** |
| * \file |
| * ETSI Plugtest resource |
| * \author |
| * Matthias Kovatsch <kovatsch@inf.ethz.ch> |
| */ |
| |
| #include <string.h> |
| #include "rest-engine.h" |
| #include "er-coap.h" |
| #include "er-coap-observe.h" |
| #include "er-plugtest.h" |
| |
| static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset); |
| static void res_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset); |
| static void res_delete_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset); |
| static void res_periodic_handler(void); |
| |
| PERIODIC_RESOURCE(res_plugtest_obs, |
| "title=\"Observable resource which changes every 5 seconds\";obs", |
| res_get_handler, |
| NULL, |
| res_put_handler, |
| res_delete_handler, |
| 5 * CLOCK_SECOND, |
| res_periodic_handler); |
| |
| static int32_t obs_counter = 0; |
| static char obs_content[MAX_PLUGFEST_BODY]; |
| static size_t obs_content_len = 0; |
| static unsigned int obs_format = 0; |
| |
| static char obs_status = 0; |
| |
| static void |
| obs_purge_list() |
| { |
| PRINTF("### SERVER ACTION ### Purging obs list"); |
| coap_remove_observer_by_uri(NULL, 0, res_plugtest_obs.url); |
| } |
| static void |
| res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset) |
| { |
| /* Keep server log clean from ticking events */ |
| if(request != NULL) { |
| PRINTF("/obs GET\n"); |
| } |
| REST.set_header_content_type(response, obs_format); |
| REST.set_header_max_age(response, 5); |
| |
| if(obs_content_len) { |
| REST.set_header_content_type(response, obs_format); |
| REST.set_response_payload(response, obs_content, obs_content_len); |
| } else { |
| REST.set_header_content_type(response, REST.type.TEXT_PLAIN); |
| REST.set_response_payload(response, obs_content, |
| snprintf(obs_content, MAX_PLUGFEST_PAYLOAD, "TICK %lu", obs_counter)); |
| } |
| /* A post_handler that handles subscriptions will be called for periodic resources by the REST framework. */ |
| } |
| static void |
| res_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset) |
| { |
| uint8_t *incoming = NULL; |
| unsigned int ct = -1; |
| |
| REST.get_header_content_type(request, &ct); |
| |
| PRINTF("/obs PUT\n"); |
| |
| if(ct != obs_format) { |
| obs_status = 1; |
| obs_format = ct; |
| } else { |
| obs_content_len = REST.get_request_payload(request, |
| (const uint8_t **)&incoming); |
| memcpy(obs_content, incoming, obs_content_len); |
| res_periodic_handler(); |
| } |
| |
| REST.set_response_status(response, REST.status.CHANGED); |
| } |
| static void |
| res_delete_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset) |
| { |
| PRINTF("/obs DELETE\n"); |
| |
| obs_status = 2; |
| |
| REST.set_response_status(response, REST.status.DELETED); |
| } |
| /* |
| * Additionally, a handler function named [resource name]_handler must be implemented for each PERIODIC_RESOURCE. |
| * It will be called by the REST manager process with the defined period. |
| */ |
| static void |
| res_periodic_handler() |
| { |
| ++obs_counter; |
| |
| /* PRINTF("TICK %u for /%s\n", obs_counter, r->url); */ |
| |
| if(obs_status == 1) { |
| |
| /* Notify the registered observers with the given message type, observe option, and payload. */ |
| REST.notify_subscribers(&res_plugtest_obs); |
| |
| PRINTF("######### sending 5.00\n"); |
| |
| obs_purge_list(); |
| } else if(obs_status == 2) { |
| |
| /* Notify the registered observers with the given message type, observe option, and payload. */ |
| REST.notify_subscribers(&res_plugtest_obs); |
| |
| obs_purge_list(); |
| |
| obs_counter = 0; |
| obs_content_len = 0; |
| } else { |
| /* Notify the registered observers with the given message type, observe option, and payload. */ |
| REST.notify_subscribers(&res_plugtest_obs); |
| } obs_status = 0; |
| } |