答案: C 云计算与 AWS、Azure 和 GCP 的无缝集成。展开描述:AWS SDK for C 简化了与 Amazon EC2 和 S3 等 AWS 服务的交互。Azure SDK for C 允许使用 Azure 计算、存储和数据库服务。GCP Cloud SDK 和 gRPC 客户端库支持与 Google Compute Engine 和 Google BigQuery 的集成。
C 云计算:与主流云平台的整合
云计算已成为现代软件开发不可或缺的一部分,它提供按需访问可扩展的计算资源,让开发者能专注于构建应用,而无需管理底层基础设施。对于使用 C 的开发者而言,与主流云平台集成至关重要。
Amazon Web Services (AWS)
AWS 是全球最大的云平台,为 C 开发者提供一系列服务。AWS SDK for C 简化了与 AWS 服务的交互,例如 Amazon Elastic Compute Cloud (EC2)、Amazon Simple Storage Service (S3) 和 Amazon DynamoDB。
#include <aws/core/Aws.h> #include <aws/core/client/AsyncCallerContext.h> #include <aws/ec2/Ec2Client.h> #include <aws/ec2/model/RunInstancesRequest.h> int main() { Aws::InitAPI(Aws::SDKOptions{}); { Aws::Client::AsyncCallerContext context; Aws::EC2::Ec2Client ec2_client; Aws::EC2::Model::RunInstancesRequest run_instances_request; run_instances_request.SetImageId("ami-id"); run_instances_request.SetInstanceType("t2.micro"); run_instances_request.SetMinCount(1); run_instances_request.SetMaxCount(1); auto outcome = ec2_client.RunInstancesAsync(run_instances_request, context); if (outcome.IsSuccess()) { std::cout << "Instance launched" << std::endl; } else { std::cout << "Error launching instance: " << outcome.GetError().GetMessage() << std::endl; } } Aws::ShutdownAPI(Aws::SDKOptions{}); return 0; }
Microsoft Azure
Azure 也为 C 开发者提供广泛的服务。Azure SDK for C 允许开发者使用 Azure 计算、存储和数据库等服务。
#include <azure/core.hpp> #include <azure/identity.hpp> #include <azure/storage.hpp> int main() { auto tenant_id = std::getenv("AZURE_TENANT_ID"); auto client_id = std::getenv("AZURE_CLIENT_ID"); auto client_secret = std::getenv("AZURE_CLIENT_SECRET"); auto storage_account_name = std::getenv("AZURE_STORAGE_ACCOUNT_NAME"); Azure::Core::Credentials::ManagedIdentityCredential creds(tenant_id, client_id, client_secret); Azure::Storage::StorageClient storage_client(storage_account_name, creds); auto blob_client = storage_client.GetBlobContainerClient("container-name"); std::string blob_name = "blob-name"; auto blob = blob_client.DownloadBlob(blob_name); std::cout << "Downloaded blob: " << blob.ContentAs<std::string>() << std::endl; return 0; }
Google Cloud Platform (GCP)
GCP 也提供了一组全面的 C 服务。GCP Cloud SDK 和 gRPC 客户端库使开发者能够轻松集成 Google Cloud 服务,例如 Google Compute Engine (GCE)、Google Cloud Storage (GCS) 和 Google BigQuery。
#include <gmock/gmock.h> #include <google/cloud/bigquery/bigquery_read_client.h> #include <google/cloud/bigquery/metadata.h> #include <google/cloud/bigquery/storage/bigquery_storage_client.h> TEST(BigqueryStorageReadWriteIntegrationTest, Read) { google::cloud::bigquery::storage::BigQueryReadClient client; auto channel = client.CreateBigQueryReadChannel( google::cloud::bigquery::storage::v1beta1::ReadSession{}); auto session = google::cloud::bigquery::storage::v1beta1::ReadSession{}; auto writer = client.WriteReadSessionAsync(channel.get(), google::cloud::CompletionQueue{}, std::move(session)); google::cloud::StatusOr<google::cloud::bigquery::storage::v1beta1:: ReadRowsResponse> rows_received; auto read_rows = client.ReadRowsAsync(channel.get(), google::cloud::CompletionQueue{}, google::bigquery::ReadRowsRequest{}); google::cloud::future<void> session_write = writer.get(); do { rows_received = read_rows.get(); } while (true); EXPECT_STATUS_OK(rows_received); }
结论
通过与主流云平台集成,C 开发者可以利用弹性、可扩展的云资源。AWS SDK for C 、Azure SDK for C 和 GCP Cloud SDK 提供了简单易用的 API,为开发人员提供与这些平台无缝互动的能力。这些实战案例演示了如何使用这些 SDK 与云服务进行交互,从而扩展 C 应用的可能性。
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