[144] | 1 | /*
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| 2 | The MIT License (MIT)
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| 3 |
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| 4 | Copyright (c) 2015 Technical Rockstars
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| 5 | Copyright (C) 2015 Embedded and Real-Time Systems Laboratory
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| 6 | Graduate School of Information Science, Nagoya Univ., JAPAN
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| 7 | Permission is hereby granted, free of charge, to any person obtaining a copy
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| 8 | of this software and associated documentation files (the "Software"), to deal
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| 9 | in the Software without restriction, including without limitation the rights
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| 10 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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| 11 | copies of the Software, and to permit persons to whom the Software is
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| 12 | furnished to do so, subject to the following conditions:
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| 13 |
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| 14 | The above copyright notice and this permission notice shall be included in all
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| 15 | copies or substantial portions of the Software.
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| 16 |
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| 17 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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| 18 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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| 19 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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| 20 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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| 21 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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| 22 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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| 23 | SOFTWARE.
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| 24 | */
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| 25 | #include "Milkcocoa.h"
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| 26 | #include "stdio.h"
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| 27 |
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| 28 |
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| 29 | DataElement::DataElement() {
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| 30 | params = aJson.createObject();
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| 31 | paJsonObj = aJson.createObject();
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| 32 | aJson.addItemToObject(paJsonObj, "params", params);
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| 33 | }
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| 34 |
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| 35 | DataElement::DataElement(char *json_string) {
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| 36 | paJsonObj = aJson.parse(json_string);
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| 37 | params = aJson.getObjectItem(paJsonObj, "params");
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| 38 | }
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| 39 |
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| 40 | DataElement::~DataElement() {
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| 41 | aJson.deleteItem(paJsonObj);
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| 42 | paJsonObj = NULL;
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| 43 | params = NULL;
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| 44 | }
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| 45 |
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| 46 | void DataElement::setValue(const char *key, const char *v) {
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| 47 | aJson.addStringToObject(params, key, v);
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| 48 | }
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| 49 |
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| 50 | void DataElement::setValue(const char *key, int v) {
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| 51 | aJson.addNumberToObject(params, key, v);
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| 52 | }
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| 53 |
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| 54 | void DataElement::setValue(const char *key, double v) {
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| 55 | aJson.addNumberToObject(params, key, v);
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| 56 | }
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| 57 |
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| 58 | char *DataElement::getString(const char *key) {
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| 59 | aJsonObject* obj = aJson.getObjectItem(params, key);
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| 60 | return obj->valuestring;
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| 61 | }
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| 62 |
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| 63 | int DataElement::getInt(const char *key) {
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| 64 | aJsonObject* obj = aJson.getObjectItem(params, key);
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| 65 | if(obj == NULL)
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| 66 | Serial.println("obj is NULL");
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| 67 | return obj->valueint;
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| 68 | }
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| 69 |
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| 70 | float DataElement::getFloat(const char *key) {
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| 71 | aJsonObject* obj = aJson.getObjectItem(params, key);
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| 72 | return obj->valuefloat;
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| 73 | }
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| 74 |
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| 75 |
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| 76 | char *DataElement::toCharArray() {
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| 77 | return aJson.print(paJsonObj);
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| 78 | }
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| 79 |
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| 80 | Milkcocoa::Milkcocoa(Client *client, const char *host, uint16_t port, const char *_app_id, const char *client_id) {
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| 81 | app_id = _app_id;
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| 82 | mqtt = new Adafruit_MQTT_Client(client, host, port, client_id, "sdammy", app_id);
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| 83 |
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| 84 | for (uint8_t i=0; i<MILKCOCOA_SUBSCRIBERS; i++) {
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| 85 | milkcocoaSubscribers[i] = 0;
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| 86 | }
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| 87 |
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| 88 | }
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| 89 |
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| 90 | Milkcocoa::Milkcocoa(Client *client, const char *host, uint16_t port, const char *_app_id, const char *client_id, const char *_session) {
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| 91 | sprintf(session, "%s", _session);
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| 92 | app_id = _app_id;
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| 93 | mqtt = new Adafruit_MQTT_Client(client, host, port, client_id, session, app_id);
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| 94 |
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| 95 | for (uint8_t i=0; i<MILKCOCOA_SUBSCRIBERS; i++) {
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| 96 | milkcocoaSubscribers[i] = 0;
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| 97 | }
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| 98 |
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| 99 | }
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| 100 |
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| 101 | Milkcocoa* Milkcocoa::createWithApiKey(Client *client, const char *host, uint16_t port, const char *app_id, const char *client_id, const char *key, const char *secret)
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| 102 | {
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| 103 | char session[60];
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| 104 | sprintf(session, "k%s:%s", key, secret);
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| 105 | return new Milkcocoa(client, host, port, app_id, client_id, session);
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| 106 | }
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| 107 |
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| 108 | void Milkcocoa::connect() {
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| 109 | int ret;
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| 110 |
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| 111 | if (mqtt->connected()) {
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| 112 | return;
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| 113 | }
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| 114 |
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| 115 | Serial.print("Connecting to MQTT... ");
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| 116 |
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| 117 | while ((ret = mqtt->connect()) != 0) { // connect will return 0 for connected
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| 118 | Serial.println(mqtt->connectErrorString(ret));
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| 119 | Serial.println(ret);
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| 120 | Serial.println("Retrying MQTT connection in 5 seconds...");
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| 121 | mqtt->disconnect();
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| 122 | delay(5000); // wait 5 seconds
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| 123 | }
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| 124 | Serial.println("MQTT Connected!");
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| 125 | }
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| 126 |
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| 127 | bool Milkcocoa::push(const char *path, DataElement *pdataelement) {
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| 128 | char topic[100];
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| 129 | bool ret;
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| 130 | char *send_array;
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| 131 | sprintf(topic, "%s/%s/push", app_id, path);
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| 132 | Adafruit_MQTT_Publish pushPublisher = Adafruit_MQTT_Publish(mqtt, topic);
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| 133 | send_array = pdataelement->toCharArray();
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| 134 | ret = pushPublisher.publish(send_array);
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| 135 | free(send_array);
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| 136 | return ret;
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| 137 | }
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| 138 |
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| 139 | bool Milkcocoa::send(const char *path, DataElement *pdataelement) {
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| 140 | char topic[100];
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| 141 | bool ret;
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| 142 | char *send_array;
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| 143 | sprintf(topic, "%s/%s/send", app_id, path);
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| 144 | Adafruit_MQTT_Publish pushPublisher = Adafruit_MQTT_Publish(mqtt, topic);
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| 145 | send_array = pdataelement->toCharArray();
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| 146 | ret = pushPublisher.publish(send_array);
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| 147 | free(send_array);
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| 148 | return ret;
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| 149 | }
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| 150 |
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| 151 | void Milkcocoa::loop() {
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| 152 | connect();
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| 153 | Adafruit_MQTT_Subscribe *subscription;
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| 154 | while ((subscription = mqtt->readSubscription(1000))) {
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| 155 | for (uint8_t i=0; i<MILKCOCOA_SUBSCRIBERS; i++) {
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| 156 | if(milkcocoaSubscribers[i] == 0) continue;
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| 157 | if (subscription == (milkcocoaSubscribers[i]->mqtt_sub) ) {
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| 158 | DataElement de = DataElement((char *)milkcocoaSubscribers[i]->mqtt_sub->lastread);
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| 159 | milkcocoaSubscribers[i]->cb( &de );
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| 160 | }
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| 161 | }
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| 162 | }
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| 163 | }
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| 164 |
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| 165 | bool Milkcocoa::on(const char *path, const char *event, GeneralFunction cb) {
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| 166 | MilkcocoaSubscriber *sub = new MilkcocoaSubscriber(cb);
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| 167 | sprintf(sub->topic, "%s/%s/%s", app_id, path, event);
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| 168 |
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| 169 | uint8_t i;
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| 170 | Adafruit_MQTT_Subscribe *mqtt_sub = new Adafruit_MQTT_Subscribe(mqtt, sub->topic);
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| 171 | sub->set_mqtt_sub(mqtt_sub);
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| 172 | if(!mqtt->subscribe(mqtt_sub)) {
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| 173 | return false;
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| 174 | }
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| 175 | for (i=0; i<MILKCOCOA_SUBSCRIBERS; i++) {
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| 176 | if (milkcocoaSubscribers[i] == sub) {
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| 177 | return false;
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| 178 | }
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| 179 | }
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| 180 | for (i=0; i<MILKCOCOA_SUBSCRIBERS; i++) {
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| 181 | if (milkcocoaSubscribers[i] == 0) {
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| 182 | milkcocoaSubscribers[i] = sub;
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| 183 | return true;
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| 184 | }
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| 185 | }
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| 186 | return false;
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| 187 | }
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| 188 |
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| 189 | MilkcocoaSubscriber::MilkcocoaSubscriber(GeneralFunction _cb) {
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| 190 | cb = _cb;
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| 191 | }
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| 192 |
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| 193 | void MilkcocoaSubscriber::set_mqtt_sub(Adafruit_MQTT_Subscribe *_mqtt_sub) {
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| 194 | mqtt_sub = _mqtt_sub;
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| 195 | }
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| 196 |
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| 197 |
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