Hay más ejemplos de AWS SDK disponibles en el repositorio de GitHub de ejemplos de AWS SDK de documentos.
Ejemplos de código de AWS IoT con un AWS SDK
Los siguientes ejemplos de código muestran cómo utilizar AWS IoT con un kit de desarrollo de software (SDK) de AWS.
Los conceptos básicos son ejemplos de código que muestran cómo realizar las operaciones esenciales dentro de un servicio.
Las acciones son extractos de código de programas más grandes y deben ejecutarse en contexto. Mientras las acciones muestran cómo llamar a las distintas funciones de servicio, es posible ver las acciones en contexto en los escenarios relacionados.
Introducción
En los siguientes ejemplos de código se muestra cómo empezar a utilizar AWS IoT.
- C++
-
- SDK para C++
-
Código del archivo de CMake CMakeLists.txt.
# Set the minimum required version of CMake for this project.
cmake_minimum_required(VERSION 3.13)
# Set the AWS service components used by this project.
set(SERVICE_COMPONENTS iot)
# Set this project's name.
project("hello_iot")
# Set the C++ standard to use to build this target.
# At least C++ 11 is required for the AWS SDK for C++.
set(CMAKE_CXX_STANDARD 11)
# Use the MSVC variable to determine if this is a Windows build.
set(WINDOWS_BUILD ${MSVC})
if (WINDOWS_BUILD) # Set the location where CMake can find the installed libraries for the AWS SDK.
string(REPLACE ";" "/aws-cpp-sdk-all;" SYSTEM_MODULE_PATH "${CMAKE_SYSTEM_PREFIX_PATH}/aws-cpp-sdk-all")
list(APPEND CMAKE_PREFIX_PATH ${SYSTEM_MODULE_PATH})
endif ()
# Find the AWS SDK for C++ package.
find_package(AWSSDK REQUIRED COMPONENTS ${SERVICE_COMPONENTS})
if (WINDOWS_BUILD AND AWSSDK_INSTALL_AS_SHARED_LIBS)
# Copy relevant AWS SDK for C++ libraries into the current binary directory for running and debugging.
# set(BIN_SUB_DIR "/Debug") # If you are building from the command line, you may need to uncomment this
# and set the proper subdirectory to the executables' location.
AWSSDK_CPY_DYN_LIBS(SERVICE_COMPONENTS "" ${CMAKE_CURRENT_BINARY_DIR}${BIN_SUB_DIR})
endif ()
add_executable(${PROJECT_NAME}
hello_iot.cpp)
target_link_libraries(${PROJECT_NAME}
${AWSSDK_LINK_LIBRARIES})
Código del archivo de origen hello_iot.cpp.
#include <aws/core/Aws.h>
#include <aws/iot/IoTClient.h>
#include <aws/iot/model/ListThingsRequest.h>
#include <iostream>
/*
* A "Hello IoT" starter application which initializes an AWS IoT client and
* lists the AWS IoT topics in the current account.
*
* main function
*
* Usage: 'hello_iot'
*
*/
int main(int argc, char **argv) {
Aws::SDKOptions options;
// Optional: change the log level for debugging.
// options.loggingOptions.logLevel = Aws::Utils::Logging::LogLevel::Debug;
Aws::InitAPI(options); // Should only be called once.
{
Aws::Client::ClientConfiguration clientConfig;
// Optional: Set to the AWS Region (overrides config file).
// clientConfig.region = "us-east-1";
Aws::IoT::IoTClient iotClient(clientConfig);
// List the things in the current account.
Aws::IoT::Model::ListThingsRequest listThingsRequest;
Aws::String nextToken; // Used for pagination.
Aws::Vector<Aws::IoT::Model::ThingAttribute> allThings;
do {
if (!nextToken.empty()) {
listThingsRequest.SetNextToken(nextToken);
}
Aws::IoT::Model::ListThingsOutcome listThingsOutcome = iotClient.ListThings(
listThingsRequest);
if (listThingsOutcome.IsSuccess()) {
const Aws::Vector<Aws::IoT::Model::ThingAttribute> &things = listThingsOutcome.GetResult().GetThings();
allThings.insert(allThings.end(), things.begin(), things.end());
nextToken = listThingsOutcome.GetResult().GetNextToken();
}
else {
std::cerr << "List things failed"
<< listThingsOutcome.GetError().GetMessage() << std::endl;
break;
}
} while (!nextToken.empty());
std::cout << allThings.size() << " thing(s) found." << std::endl;
for (auto const &thing: allThings) {
std::cout << thing.GetThingName() << std::endl;
}
}
Aws::ShutdownAPI(options); // Should only be called once.
return 0;
}
- Java
-
- SDK para Java 2.x
-
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.iot.IotClient;
import software.amazon.awssdk.services.iot.model.ListThingsRequest;
import software.amazon.awssdk.services.iot.model.ListThingsResponse;
import software.amazon.awssdk.services.iot.model.ThingAttribute;
import software.amazon.awssdk.services.iot.paginators.ListThingsIterable;
import java.util.List;
public class HelloIoT {
public static void main(String[] args) {
System.out.println("Hello AWS IoT. Here is a listing of your AWS IoT Things:");
IotClient iotClient = IotClient.builder()
.region(Region.US_EAST_1)
.build();
listAllThings(iotClient);
}
public static void listAllThings(IotClient iotClient) {
iotClient.listThingsPaginator(ListThingsRequest.builder()
.maxResults(10)
.build())
.stream()
.flatMap(response -> response.things().stream())
.forEach(attribute -> {
System.out.println("Thing name: " + attribute.thingName());
System.out.println("Thing ARN: " + attribute.thingArn());
});
}
}
- Kotlin
-
- SDK para Kotlin
-
import aws.sdk.kotlin.services.iot.IotClient
import aws.sdk.kotlin.services.iot.model.ListThingsRequest
suspend fun main() {
println("A listing of your AWS IoT Things:")
listAllThings()
}
suspend fun listAllThings() {
val thingsRequest =
ListThingsRequest {
maxResults = 10
}
IotClient.fromEnvironment { region = "us-east-1" }.use { iotClient ->
val response = iotClient.listThings(thingsRequest)
val thingList = response.things
if (thingList != null) {
for (attribute in thingList) {
println("Thing name ${attribute.thingName}")
println("Thing ARN: ${attribute.thingArn}")
}
}
}
}
