Diff: iothub_client_sample_amqp.cpp

Revision:

58:f50b97b08851

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/iothub_client_sample_amqp.cpp	Thu Jan 05 00:20:03 2017 +0000
@@ -0,0 +1,240 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+#include <mbed.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "azure_c_shared_utility/platform.h"
+#include "azure_c_shared_utility/threadapi.h"
+#include "azure_c_shared_utility/crt_abstractions.h"
+#include "iothub_client.h"
+#include "iothub_message.h"
+#include "iothubtransportamqp.h"
+
+#ifdef MBED_BUILD_TIMESTAMP
+#include "certs.h"
+#endif // MBED_BUILD_TIMESTAMP
+
+/*String containing Hostname, Device Id & Device Key in the format:                         */
+/*  "HostName=<host_name>;DeviceId=<device_id>;SharedAccessKey=<device_key>"                */
+/*  "HostName=<host_name>;DeviceId=<device_id>;SharedAccessSignature=<device_sas_token>"    */
+static const char* connectionString = "HostName=MarkRadML.azure-devices.net;DeviceId=MBEDTest;SharedAccessKey=rgxlnR0rIBW4vnnnDkrbAv+mSOc/Mt60mg1CEjLx7pY=";
+
+static int callbackCounter;
+static bool g_continueRunning;
+static char msgText[1024];
+static char propText[1024];
+#define MESSAGE_COUNT       5
+#define DOWORK_LOOP_NUM     3
+
+
+typedef struct EVENT_INSTANCE_TAG
+{
+    IOTHUB_MESSAGE_HANDLE messageHandle;
+    size_t messageTrackingId;  // For tracking the messages within the user callback.
+} EVENT_INSTANCE;
+
+static IOTHUBMESSAGE_DISPOSITION_RESULT ReceiveMessageCallback(IOTHUB_MESSAGE_HANDLE message, void* userContextCallback)
+{
+    int* counter = (int*)userContextCallback;
+    const unsigned char* buffer = NULL;
+    size_t size = 0;
+    const char* messageId;
+    const char* correlationId;
+
+    // AMQP message properties
+    if ((messageId = IoTHubMessage_GetMessageId(message)) == NULL)
+    {
+        messageId = "<null>";
+    }
+
+    if ((correlationId = IoTHubMessage_GetCorrelationId(message)) == NULL)
+    {
+        correlationId = "<null>";
+    }
+
+    // AMQP message content.
+    IOTHUBMESSAGE_CONTENT_TYPE contentType = IoTHubMessage_GetContentType(message);
+
+    if (contentType == IOTHUBMESSAGE_BYTEARRAY)
+    {
+        if (IoTHubMessage_GetByteArray(message, &buffer, &size) == IOTHUB_MESSAGE_OK)
+        {
+            (void)printf("Received Message [%d] (message-id: %s, correlation-id: %s) with BINARY Data: <<<%.*s>>> & Size=%d\r\n", *counter, messageId, correlationId,(int)size, buffer, (int)size);
+        }
+        else
+        {
+            (void)printf("Failed getting the BINARY body of the message received.\r\n");
+        }
+    }
+    else if (contentType == IOTHUBMESSAGE_STRING)
+    {
+        if ((buffer = (const unsigned char*)IoTHubMessage_GetString(message)) != NULL && (size = strlen((const char*)buffer)) > 0)
+        {
+            (void)printf("Received Message [%d] (message-id: %s, correlation-id: %s) with STRING Data: <<<%.*s>>> & Size=%d\r\n", *counter, messageId, correlationId, (int)size, buffer, (int)size);
+
+            // If we receive the work 'quit' then we stop running
+        }
+        else
+        {
+            (void)printf("Failed getting the STRING body of the message received.\r\n");
+        }
+    }
+    else
+    {
+        (void)printf("Failed getting the body of the message received (type %i).\r\n", contentType);
+    }
+
+    // Retrieve properties from the message
+    MAP_HANDLE mapProperties = IoTHubMessage_Properties(message);
+    if (mapProperties != NULL)
+    {
+        const char*const* keys;
+        const char*const* values;
+        size_t propertyCount = 0;
+        if (Map_GetInternals(mapProperties, &keys, &values, &propertyCount) == MAP_OK)
+        {
+            if (propertyCount > 0)
+            {
+                size_t index;
+
+                printf("Message Properties:\r\n");
+                for (index = 0; index < propertyCount; index++)
+                {
+                    printf("\tKey: %s Value: %s\r\n", keys[index], values[index]);
+                }
+                printf("\r\n");
+            }
+        }
+    }
+
+	if (size == (strlen("quit") * sizeof(char)) && memcmp(buffer, "quit", size) == 0)
+    {
+        g_continueRunning = false;
+    }
+
+    /* Some device specific action code goes here... */
+    (*counter)++;
+    return IOTHUBMESSAGE_ACCEPTED;
+}
+
+static void SendConfirmationCallback(IOTHUB_CLIENT_CONFIRMATION_RESULT result, void* userContextCallback)
+{
+    EVENT_INSTANCE* eventInstance = (EVENT_INSTANCE*)userContextCallback;
+    (void)printf("Confirmation[%d] received for message tracking id = %zu with result = %s\r\n", callbackCounter, eventInstance->messageTrackingId, ENUM_TO_STRING(IOTHUB_CLIENT_CONFIRMATION_RESULT, result));
+    /* Some device specific action code goes here... */
+    callbackCounter++;
+    IoTHubMessage_Destroy(eventInstance->messageHandle);
+}
+
+void iothub_client_sample_amqp_run(void)
+{
+    IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle;
+
+    EVENT_INSTANCE messages[MESSAGE_COUNT];
+
+    g_continueRunning = true;
+    srand((unsigned int)time(NULL));
+    double avgWindSpeed = 10.0;
+
+    callbackCounter = 0;
+    int receiveContext = 0;
+
+    (void)printf("Starting the IoTHub client sample AMQP...\r\n");
+
+    if (platform_init() != 0)
+    {
+        printf("Failed to initialize the platform.\r\n");
+    }
+    else
+    {
+        printf("Platform initialized\r\n");
+        if ((iotHubClientHandle = IoTHubClient_LL_CreateFromConnectionString(connectionString, AMQP_Protocol)) == NULL)
+        {
+            (void)printf("ERROR: iotHubClientHandle is NULL!\r\n");
+        }
+        else
+        {
+            printf("Client handle created\r\n");
+            bool traceOn = true;
+            IoTHubClient_LL_SetOption(iotHubClientHandle, "logtrace", &traceOn);
+
+#ifdef MBED_BUILD_TIMESTAMP
+            // For mbed add the certificate information
+            if (IoTHubClient_LL_SetOption(iotHubClientHandle, "TrustedCerts", certificates) != IOTHUB_CLIENT_OK)
+            {
+                printf("failure to set option \"TrustedCerts\"\r\n");
+            }
+#endif // MBED_BUILD_TIMESTAMP
+
+            /* Setting Message call back, so we can receive Commands. */
+            if (IoTHubClient_LL_SetMessageCallback(iotHubClientHandle, ReceiveMessageCallback, &receiveContext) != IOTHUB_CLIENT_OK)
+            {
+                (void)printf("ERROR: IoTHubClient_SetMessageCallback..........FAILED!\r\n");
+            }
+            else
+            {
+                (void)printf("IoTHubClient_SetMessageCallback...successful.\r\n");
+
+                /* Now that we are ready to receive commands, let's send some messages */
+                size_t iterator = 0;
+                do
+                {
+                    if (iterator < MESSAGE_COUNT)
+                    {
+                        sprintf_s(msgText, sizeof(msgText), "{\"deviceId\":\"myFirstDevice\",\"windSpeed\":%.2f}", avgWindSpeed + (rand() % 4 + 2));
+                        if ((messages[iterator].messageHandle = IoTHubMessage_CreateFromByteArray((const unsigned char*)msgText, strlen(msgText))) == NULL)
+                        {
+                            (void)printf("ERROR: iotHubMessageHandle is NULL!\r\n");
+                        }
+                        else
+                        {
+                            messages[iterator].messageTrackingId = iterator;
+
+                            MAP_HANDLE propMap = IoTHubMessage_Properties(messages[iterator].messageHandle);
+                            (void)sprintf_s(propText, sizeof(propText), "PropMsg_%zu", iterator);
+                            if (Map_AddOrUpdate(propMap, "PropName", propText) != MAP_OK)
+                            {
+                                (void)printf("ERROR: Map_AddOrUpdate Failed!\r\n");
+                            }
+
+                            if (IoTHubClient_LL_SendEventAsync(iotHubClientHandle, messages[iterator].messageHandle, SendConfirmationCallback, &messages[iterator]) != IOTHUB_CLIENT_OK)
+                            {
+                                (void)printf("ERROR: IoTHubClient_SendEventAsync..........FAILED!\r\n");
+                            }
+                            else
+                            {
+                                (void)printf("IoTHubClient_SendEventAsync accepted data for transmission to IoT Hub.\r\n");
+                            }
+                        }
+                    }
+                    IoTHubClient_LL_DoWork(iotHubClientHandle);
+                    ThreadAPI_Sleep(1);
+
+                    iterator++;
+                } while (g_continueRunning);
+
+                (void)printf("iothub_client_sample_mqtt has gotten quit message, call DoWork %d more time to complete final sending...\r\n", DOWORK_LOOP_NUM);
+                for (size_t index = 0; index < DOWORK_LOOP_NUM; index++)
+                {
+                    IoTHubClient_LL_DoWork(iotHubClientHandle);
+                    ThreadAPI_Sleep(1);
+                }
+            }
+            IoTHubClient_LL_Destroy(iotHubClientHandle);
+        }
+        platform_deinit();
+    }
+}
+
+int main(void)
+{
+    Serial pc(USBTX, USBRX); // Primary output to demonstrate library
+
+    pc.baud(115200); // Print quickly! 200Hz x line of output data!
+
+    printf("Start...\r\n");
+    iothub_client_sample_amqp_run();
+    return 0;
+}