Added insights in rainmaker switch example

Author: sanketwadekar

Diff for: CMakeLists.txt

@@ -99,6 +99,7 @@ set(LIBRARY_SRCS
   libraries/RainMaker/src/RMakerType.cpp
   libraries/RainMaker/src/RMakerQR.cpp
   libraries/RainMaker/src/RMakerUtils.cpp
+  libraries/RainMaker/src/AppInsights.cpp
   libraries/SD_MMC/src/SD_MMC.cpp
   libraries/SD/src/SD.cpp
   libraries/SD/src/sd_diskio.cpp

Diff for: libraries/RainMaker/examples/RMakerSwitch/RMakerSwitch.ino

@@ -2,6 +2,7 @@
 #include "RMaker.h"
 #include "WiFi.h"
 #include "WiFiProv.h"
+#include "AppInsights.h"
 
 #define DEFAULT_POWER_MODE true
 const char *service_name = "PROV_1234";
@@ -88,6 +89,9 @@ void setup()
     RMaker.enableSchedule();
 
     RMaker.enableScenes();
+    // Enable ESP Insights. Insteads of using the default http transport, this function will
+    // reuse the existing MQTT connection of Rainmaker, thereby saving memory space.
+    initAppInsights();
 
     RMaker.start();
 

Diff for: libraries/RainMaker/src/AppInsights.cpp

@@ -0,0 +1,81 @@
+/*
+ * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "sdkconfig.h"
+#if defined(CONFIG_ESP_INSIGHTS_ENABLED) && defined(CONFIG_ESP_RMAKER_WORK_QUEUE_TASK_STACK)
+#include "Arduino.h"
+#include "AppInsights.h"
+#include "Insights.h"
+#include <esp_rmaker_mqtt.h>
+#include <esp_insights.h>
+#include <esp_diagnostics.h>
+#include <esp_rmaker_core.h>
+#include <esp_rmaker_common_events.h>
+#include <inttypes.h>
+
+extern "C" {
+    bool esp_rmaker_mqtt_is_budget_available();
+}
+
+#define INSIGHTS_TOPIC_SUFFIX       "diagnostics/from-node"
+#define INSIGHTS_TOPIC_RULE         "insights_message_delivery"
+
+static void _rmakerCommonEventHandler(void* arg, esp_event_base_t event_base, int32_t event_id, void* event_data)
+{
+    if (event_base != RMAKER_COMMON_EVENT) {
+        return;
+    }
+    esp_insights_transport_event_data_t data;
+    switch(event_id) {
+        case RMAKER_MQTT_EVENT_PUBLISHED:
+            memset(&data, 0, sizeof(data));
+            data.msg_id = *(int *)event_data;
+            esp_event_post(INSIGHTS_EVENT, INSIGHTS_EVENT_TRANSPORT_SEND_SUCCESS, &data, sizeof(data), portMAX_DELAY);
+            break;
+        default:
+            break;
+    }
+}
+
+static int _appInsightsDataSend(void *data, size_t len)
+{
+    char topic[128];
+    int msg_id = -1;
+    if (data == NULL) {
+        return 0;
+    }
+    char *node_id = esp_rmaker_get_node_id();
+    if (!node_id) {
+        return -1;
+    }
+    if (esp_rmaker_mqtt_is_budget_available() == false) {
+        return ESP_FAIL;
+    }
+    esp_rmaker_create_mqtt_topic(topic, sizeof(topic), INSIGHTS_TOPIC_SUFFIX, INSIGHTS_TOPIC_RULE);
+    esp_rmaker_mqtt_publish(topic, data, len, RMAKER_MQTT_QOS1, &msg_id);
+    return msg_id;
+}
+
+bool initAppInsights(uint32_t log_type, bool alloc_ext_ram)
+{
+    char *node_id = esp_rmaker_get_node_id();
+    esp_insights_transport_config_t transport;
+    transport.userdata = NULL;
+    transport.callbacks.data_send = _appInsightsDataSend;
+    transport.callbacks.init = NULL;
+    transport.callbacks.deinit = NULL;
+    transport.callbacks.connect = NULL;
+    transport.callbacks.disconnect = NULL;
+    esp_insights_transport_register(&transport);
+    esp_event_handler_register(RMAKER_COMMON_EVENT, ESP_EVENT_ANY_ID, _rmakerCommonEventHandler, NULL);
+    return Insights.begin(NULL, node_id, log_type, alloc_ext_ram, false);
+}
+#else
+bool initAppInsights(uint32_t log_type, bool alloc_ext_ram)
+{
+    return false;
+}
+#endif

Diff for: libraries/RainMaker/src/AppInsights.h

@@ -0,0 +1,12 @@
+/*
+ * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+#include "sdkconfig.h"
+#include "Arduino.h"
+#include "inttypes.h"
+
+bool initAppInsights(uint32_t log_type = 0xffffffff, bool alloc_ext_ram = false);