使用SSIS脚本组件读取Azure Data Lake Store文件

Question

感谢您的建议。 我的要求是，使用SSIS从ADLS读取json文件并加载到SQL表中

实现：我已经实现了代码来读取.Net控制台应用程序中的json文件内容。这在Console应用程序中工作正常。我在SSIS Script组件中复制了相同的代码，但它抛出了“Microsoft.Azure.DataLake.Store.AdlsClient的类型初始化器”在AdlsClient.CreateClient中引发异常“异常。

using Microsoft.Rest;
using Microsoft.Rest.Azure.Authentication;
using Microsoft.Azure.Management.DataLake.Store;
using Microsoft.Azure.DataLake.Store;
using Microsoft.Azure.DataLake.Store.AclTools;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

JObject results = new JObject();
        string applicationId = "<appid>;
        string secretKey = <secretekey>;
        string tenantId = <tenantid>;
        string adlsAccountName = "<ADLSNAME>.azuredatalakestore.net";
        ServiceClientCredentials creds = ApplicationTokenProvider.LoginSilentAsync(tenantId, applicationId, secretKey).Result;

AdlsClient adlsClient = AdlsClient.CreateClient(adlsAccountName, creds);
string srcPath = @"/InputFiles/1636274001230002_20180621_104427.json";
using (StreamReader readStream = new 
StreamReader(adlsClient.GetReadStream(srcPath)))
        {
            var p2Object = JsonConvert.DeserializeObject(readStream.ReadToEnd());
            results = JObject.Parse(p2Object.ToString());
        }

        date = ((string)results["eeData"][0]["startDate"]);
        machine = ((string)results["eeData"][0]["machineName"]);
        ppl = ((string)results["eeData"][0]["ppl"]);

Answer 1

问题在于第三方DLL的SSIS脚本组件中缺少引用路径。在Console App中，我可以安装NuGet包管理器。但是在SSIS Script组件中，NuGet包安装失败，SSIS组件缺少引用。下面的代码将强制脚本组件编译器从给定路径引用DLL。

在PreExecute（）/ Main（）方法上面添加此代码。

static ScriptMain()
    {
        AppDomain.CurrentDomain.AssemblyResolve += new ResolveEventHandler(CurrentDomain_AssemblyResolve);
    }

    static System.Reflection.Assembly CurrentDomain_AssemblyResolve(object sender, ResolveEventArgs args)
    {
        if (args.Name.Contains("Newtonsoft.Json"))
        {
            return System.Reflection.Assembly.LoadFile(@"C:\Program Files\Microsoft SDKs\Azure\.NET SDK\v2.9\ToolsRef\Newtonsoft.Json.dll");
        }

        if (args.Name.Contains("Microsoft.Azure.DataLake.Store"))
        {
            return System.Reflection.Assembly.LoadFile(@"C:\Program Files\WindowsPowerShell\Modules\AzureRM.DataLakeStore\5.2.0\Microsoft.Azure.DataLake.Store.dll");
        }

        if (args.Name.Contains("Microsoft.Rest.ClientRuntime.Azure.Authentication"))
        {
            return System.Reflection.Assembly.LoadFile(@"C:\Program Files\WindowsPowerShell\Modules\Azure\5.1.2\StorSimple\Microsoft.Rest.ClientRuntime.Azure.Authentication.dll");
        }

        if (args.Name.Contains("Microsoft.Rest.ClientRuntime"))
        {
            return System.Reflection.Assembly.LoadFile(@"C:\Program Files\WindowsPowerShell\Modules\Azure\5.1.2\Services\Microsoft.Rest.ClientRuntime.dll");
        }
       if (args.Name.Contains("NLog"))
        {
        return System.Reflection.Assembly.LoadFile(@"C:\Users\<user>\source\repos\Integration Services Project2\NLog.dll");
        }

        return null;

       }