有没有办法按事件触发数据湖分析作业？

Question

有没有办法通过下一个事件触发数据湖分析作业： “当数据/事件 来到事件中心时”它会触发作业。
它不一定是事件中心，但我想触发工作并以某种方式传递数据（例如 json）

Answer 1

它不一定是事件中心，但我想触发工作并以某种方式传递数据（例如 json）

根据您的描述，我建议您可以考虑使用azure web jobs（您也可以使用eventhub trigger 或queue trigger）并使用azure data Lake analytics net SDK 来实现您的要求。

在开始使用 Azure Data Lake Analytics Net SDK 之前，您需要先为您的应用程序注册一个 AD 应用程序，以请求令牌（使用客户端 ID 和密码）访问 ADLA。

在 Azure AD 中注册一个应用并为其创建服务原则。更多注册app和获取access token的详细步骤请参考document。

注意：不要忘记为您的 AD 组添加访问数据湖的权限，更多详细信息，您可以参考此article。

完成此操作后，您可以使用以下代码创建一个 Web 作业，该作业将由队列（或事件中心）触发，以在数据湖分析中创建一个新作业来运行您的脚本。

代码如下：

注意：您需要从 Nuget 安装以下软件包：

Microsoft.Azure.Graph.RBAC (preview)
Microsoft.Azure.Management.DataLake.Analytics
Microsoft.Azure.Management.DataLake.Store
Microsoft.IdentityModel.Clients.ActiveDirectory 
Microsoft.Rest.ClientRuntime.Azure.Authentication

函数.cs：

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Azure.WebJobs;
using Microsoft.Rest;
using System.Threading;
using Microsoft.Rest.Azure.Authentication;

using Microsoft.IdentityModel.Clients.ActiveDirectory;
using Microsoft.Azure.Management.DataLake.Analytics;
using Microsoft.Azure.Management.DataLake.Store;
using Microsoft.Azure.Graph.RBAC;
using Microsoft.Azure.Management.DataLake.Analytics.Models;
using System.Security.Cryptography.X509Certificates;

namespace WebJob1
{
    public class Functions
    {
        // This function will get triggered/executed when a new message is written 
        // on an Azure Queue called queue.
        public static void ProcessQueueMessage([QueueTrigger("queue")] string message, TextWriter log)
        {
            string adlaAccountName = "adlaAccountName";
            string subscriptionId = "yoursubscriptionid";

            string domain = "tenantid";
            var armTokenAudience = new Uri(@"https://management.core.windows.net/");
            var adlTokenAudience = new Uri(@"https://datalake.azure.net/");
            var aadTokenAudience = new Uri(@"https://graph.windows.net/");

            // ----------------------------------------
            // Perform authentication to get credentials
            // ----------------------------------------


            // NON - INTERACTIVE WITH SECRET KEY
            string clientId = "clientId";
            string secretKey = "clientsecretKey";
            var armCreds = GetCredsServicePrincipalSecretKey(domain, armTokenAudience, clientId, secretKey);
            var adlCreds = GetCredsServicePrincipalSecretKey(domain, adlTokenAudience, clientId, secretKey);
            var aadCreds = GetCredsServicePrincipalSecretKey(domain, aadTokenAudience, clientId, secretKey);

            // INTERACTIVE WITH CACHE
            //var tokenCache = new TokenCache();
            //tokenCache.BeforeAccess = BeforeTokenCacheAccess;
            //tokenCache.AfterAccess = AfterTokenCacheAccess;
            //var armCreds = GetCredsInteractivePopup(domain, armTokenAudience, tokenCache, PromptBehavior.Auto);
            //var adlCreds = GetCredsInteractivePopup(domain, adlTokenAudience, tokenCache, PromptBehavior.Auto);
            //var aadCreds = GetCredsInteractivePopup(domain, aadTokenAudience, tokenCache, PromptBehavior.Auto);

            // INTERACTIVE WITHOUT CACHE
            // var armCreds = GetCredsInteractivePopup(domain, armTokenAudience, PromptBehavior.Auto);
            // var adlCreds = GetCredsInteractivePopup(domain, adlTokenAudience, PromptBehavior.Auto);
            // var aadCreds = GetCredsInteractivePopup(domain, aadTokenAudience, PromptBehavior.Auto);


            // NON-INTERACTIVE WITH CERT
            // string clientId = "<service principal / application client ID>";
            // var certificate = new X509Certificate2(@"<path to (PFX) certificate file>", "<certificate password>");
            // var armCreds = GetCredsServicePrincipalCertificate(domain, armTokenAudience, clientId, certificate);
            // var adlCreds = GetCredsServicePrincipalCertificate(domain, adlTokenAudience, clientId, certificate);
            // var aadCreds = GetCredsServicePrincipalCertificate(domain, aadTokenAudience, clientId, certificate);

            // ----------------------------------------
            // Create the REST clients using the credentials
            // ----------------------------------------

            var adlaAccountClient = new DataLakeAnalyticsAccountManagementClient(armCreds);
            adlaAccountClient.SubscriptionId = subscriptionId;

            var adlsAccountClient = new DataLakeStoreAccountManagementClient(armCreds);
            adlsAccountClient.SubscriptionId = subscriptionId;

            var adlaCatalogClient = new DataLakeAnalyticsCatalogManagementClient(adlCreds);
            var adlaJobClient = new DataLakeAnalyticsJobManagementClient(adlCreds);
            var adlsFileSystemClient = new DataLakeStoreFileSystemManagementClient(adlCreds);

            var graphClient = new GraphRbacManagementClient(aadCreds);
            graphClient.TenantID = domain;

            // ----------------------------------------
            // Perform operations with the REST clients
            // ----------------------------------------

            var script = @" your script ";
            var jobId = Guid.NewGuid();
            var properties = new USqlJobProperties(script);
            var parameters = new JobInformation("test1", JobType.USql, properties, priority: 1, degreeOfParallelism: 1, jobId: jobId);
            //Create and submit new job
            var jobInfo = adlaJobClient.Job.Create(adlaAccountName, jobId, parameters);
        }

        // The interactive samples reuse Azure PowerShell's client ID
        // For production code you should use your own client ids
        private static string azure_powershell_clientid = "1950a258-227b-4e31-a9cf-717495945fc2";

        /*
         *  Interactive: User popup
         *  (no token cache to reuse/save session state)
         */
        private static ServiceClientCredentials GetCredsInteractivePopup(string domain, Uri tokenAudience, PromptBehavior promptBehavior = PromptBehavior.Auto)
        {
            SynchronizationContext.SetSynchronizationContext(new SynchronizationContext());

            // The client id comes from Azure PowerShell
            // for production code you should use your own client id

            var clientSettings = new ActiveDirectoryClientSettings
            {
                ClientId = azure_powershell_clientid,
                ClientRedirectUri = new Uri("urn:ietf:wg:oauth:2.0:oob"),
                PromptBehavior = promptBehavior
            };

            var serviceSettings = ActiveDirectoryServiceSettings.Azure;
            serviceSettings.TokenAudience = tokenAudience;

            var creds = UserTokenProvider.LoginWithPromptAsync(domain, clientSettings, serviceSettings).GetAwaiter().GetResult();

            return creds;
        }

        /*
         *  Interactive: User popup
         *  (using a token cache to reuse/save session state)
         */
        private static ServiceClientCredentials GetCredsInteractivePopup(string domain, Uri tokenAudience, TokenCache tokenCache, PromptBehavior promptBehavior = PromptBehavior.Auto)
        {
            SynchronizationContext.SetSynchronizationContext(new SynchronizationContext());

            var clientSettings = new ActiveDirectoryClientSettings
            {
                ClientId = azure_powershell_clientid,
                ClientRedirectUri = new Uri("urn:ietf:wg:oauth:2.0:oob"),
                PromptBehavior = promptBehavior
            };

            var serviceSettings = ActiveDirectoryServiceSettings.Azure;
            serviceSettings.TokenAudience = tokenAudience;

            var creds = UserTokenProvider.LoginWithPromptAsync(domain, clientSettings, serviceSettings, tokenCache).GetAwaiter().GetResult();

            return creds;
        }



        /*
         *  Interactive: Device code login
         *  NOT YET SUPPORTED by Azure's .NET SDK authentication library
         */
        private static ServiceClientCredentials GetCredsDeviceCode()
        {
            throw new NotImplementedException("Azure SDK's .NET authentication library doesn't support device code login yet.");
        }

        /*
         *  Non-interactive: Service principal / application using a secret key
         *  Setup: https://docs.microsoft.com/en-us/azure/azure-resource-manager/resource-group-authenticate-service-principal#create-service-principal-with-password
         */
        private static ServiceClientCredentials GetCredsServicePrincipalSecretKey(string domain, Uri tokenAudience, string clientId, string secretKey)
        {
            SynchronizationContext.SetSynchronizationContext(new SynchronizationContext());

            var serviceSettings = ActiveDirectoryServiceSettings.Azure;
            serviceSettings.TokenAudience = tokenAudience;

            var creds = ApplicationTokenProvider.LoginSilentAsync(domain, clientId, secretKey, serviceSettings).GetAwaiter().GetResult();

            return creds;
        }

        /*
         *  Non-interactive: Service principal / application using a certificate
         *  Setup: https://docs.microsoft.com/en-us/azure/azure-resource-manager/resource-group-authenticate-service-principal#create-service-principal-with-self-signed-certificate
         */
        private static ServiceClientCredentials GetCredsServicePrincipalCertificate(string domain, Uri tokenAudience, string clientId, X509Certificate2 certificate)
        {
            SynchronizationContext.SetSynchronizationContext(new SynchronizationContext());

            var clientAssertionCertificate = new ClientAssertionCertificate(clientId, certificate);
            var serviceSettings = ActiveDirectoryServiceSettings.Azure;
            serviceSettings.TokenAudience = tokenAudience;

            var creds = ApplicationTokenProvider.LoginSilentWithCertificateAsync(domain, clientAssertionCertificate, serviceSettings).GetAwaiter().GetResult();

            return creds;
        }
    }
}

结果：