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joelhulenjoelhulen
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Clean solution commit
1 parent 7c10068 commit 3b92698

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‎TollBooth.sln

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@@ -3,9 +3,9 @@ Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio 15
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VisualStudioVersion = 15.0.27130.2003
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TollBooth", "TollBooth\TollBooth.csproj", "{58B34BE7-1F92-45A6-AA28-56E4684640E4}"
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Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TollBooth", "TollBooth\TollBooth.csproj", "{58B34BE7-1F92-45A6-AA28-56E4684640E4}"
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TollBoth_Tests", "TollBoth_Tests\TollBoth_Tests.csproj", "{73589AA0-D7C0-461B-9896-E5F89A359D71}"
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "UploadImages", "UploadImages\UploadImages.csproj", "{A7110625-77CF-45DD-920F-F35E8A4740BB}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -17,10 +17,10 @@ Global
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{58B34BE7-1F92-45A6-AA28-56E4684640E4}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{58B34BE7-1F92-45A6-AA28-56E4684640E4}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{58B34BE7-1F92-45A6-AA28-56E4684640E4}.Release|Any CPU.Build.0 = Release|Any CPU
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{73589AA0-D7C0-461B-9896-E5F89A359D71}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{73589AA0-D7C0-461B-9896-E5F89A359D71}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{73589AA0-D7C0-461B-9896-E5F89A359D71}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{73589AA0-D7C0-461B-9896-E5F89A359D71}.Release|Any CPU.Build.0 = Release|Any CPU
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{A7110625-77CF-45DD-920F-F35E8A4740BB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{A7110625-77CF-45DD-920F-F35E8A4740BB}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{A7110625-77CF-45DD-920F-F35E8A4740BB}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{A7110625-77CF-45DD-920F-F35E8A4740BB}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE

‎TollBooth/DatabaseMethods.cs

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using System;
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using System.Collections.Generic;
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using System.Configuration;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using Microsoft.Azure.Documents.Client;
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using Microsoft.Azure.WebJobs.Host;
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using TollBooth.Models;
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namespace TollBooth
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{
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internal class DatabaseMethods
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{
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private readonly string _endpointUrl = ConfigurationManager.AppSettings["cosmosDBEndPointUrl"];
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private readonly string _authorizationKey = ConfigurationManager.AppSettings["cosmosDBAuthorizationKey"];
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private readonly string _databaseId = ConfigurationManager.AppSettings["cosmosDBDatabaseId"];
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private readonly string _collectionId = ConfigurationManager.AppSettings["cosmosDBCollectionId"];
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private readonly TraceWriter _log;
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// Reusable instance of DocumentClient which represents the connection to a Cosmos DB endpoint.
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private DocumentClient _client;
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public DatabaseMethods(TraceWriter log)
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{
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_log = log;
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}
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/// <summary>
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/// Retrieves all license plate records (documents) that have not yet been exported.
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/// </summary>
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/// <returns></returns>
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public List<LicensePlateDataDocument> GetLicensePlatesToExport()
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{
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_log.Info("Retrieving license plates to export");
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int exportedCount = 0;
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var collectionLink = UriFactory.CreateDocumentCollectionUri(_databaseId, _collectionId);
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List<LicensePlateDataDocument> licensePlates;
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using (_client = new DocumentClient(new Uri(_endpointUrl), _authorizationKey))
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{
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// MaxItemCount value tells the document query to retrieve 100 documents at a time until all are returned.
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// TODO 5: Retrieve a List of LicensePlateDataDocument objects from the collectionLink where the exported value is false.
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// COMPLETE: licensePlates = _client.CreateDocumentQuery ...
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// TODO 6: Remove the line below.
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licensePlates = new List<LicensePlateDataDocument>();
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}
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exportedCount = licensePlates.Count();
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_log.Info($"{exportedCount} license plates found that are ready for export");
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return licensePlates;
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}
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/// <summary>
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/// Updates license plate records (documents) as exported. Call after successfully
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/// exporting the passed in license plates.
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/// In a production environment, it would be best to create a stored procedure that
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/// bulk updates the set of documents, vastly reducing the number of transactions.
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/// </summary>
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/// <param name="licensePlates"></param>
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/// <returns></returns>
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public async Task MarkLicensePlatesAsExported(IEnumerable<LicensePlateDataDocument> licensePlates)
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{
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_log.Info("Updating license plate documents exported values to true");
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var collectionLink = UriFactory.CreateDocumentCollectionUri(_databaseId, _collectionId);
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using (_client = new DocumentClient(new Uri(_endpointUrl), _authorizationKey))
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{
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foreach (var licensePlate in licensePlates)
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{
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licensePlate.exported = true;
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var response = await _client.ReplaceDocumentAsync(UriFactory.CreateDocumentUri(_databaseId, _collectionId, licensePlate.Id), licensePlate);
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var updated = response.Resource;
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//_log.Info($"Exported value of updated document: {updated.GetPropertyValue<bool>("exported")}");
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}
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}
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}
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}
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}

‎TollBooth/ExportLicensePlates.cs

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using System.Linq;
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using System.Net;
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using System.Net.Http;
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using System.Threading.Tasks;
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using Microsoft.Azure.WebJobs;
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using Microsoft.Azure.WebJobs.Extensions.Http;
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using Microsoft.Azure.WebJobs.Host;
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namespace TollBooth
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{
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public static class ExportLicensePlates
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{
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[FunctionName("ExportLicensePlates")]
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public static async Task<HttpResponseMessage> Run([HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)]HttpRequestMessage req, TraceWriter log)
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{
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int exportedCount = 0;
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log.Info("Finding license plate data to export");
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var databaseMethods = new DatabaseMethods(log);
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var licensePlates = databaseMethods.GetLicensePlatesToExport();
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if (licensePlates.Any())
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{
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log.Info($"Retrieved {licensePlates.Count} license plates");
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var fileMethods = new FileMethods(log);
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var uploaded = await fileMethods.GenerateAndSaveCsv(licensePlates);
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if (uploaded)
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{
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await databaseMethods.MarkLicensePlatesAsExported(licensePlates);
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exportedCount = licensePlates.Count;
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log.Info("Finished updating the license plates");
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}
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else
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{
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log.Info(
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"Export file could not be uploaded. Skipping database update that marks the documents as exported.");
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}
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log.Info($"Exported {exportedCount} license plates");
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}
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else
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{
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log.Info("No license plates to export");
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}
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return exportedCount == 0
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? req.CreateResponse(HttpStatusCode.NoContent)
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: req.CreateResponse(HttpStatusCode.OK, $"Exported {exportedCount} license plates");
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}
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}
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}

‎TollBooth/FileMethods.cs

Lines changed: 91 additions & 0 deletions
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@@ -0,0 +1,91 @@
1+
using System;
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using System.Collections.Generic;
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using System.Configuration;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using CsvHelper;
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using Microsoft.Azure.WebJobs.Host;
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using Microsoft.WindowsAzure.Storage;
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using Microsoft.WindowsAzure.Storage.Blob;
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using TollBooth.Models;
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14+
namespace TollBooth
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{
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internal class FileMethods
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{
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private readonly CloudBlobClient _blobClient;
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private readonly string _containerName = ConfigurationManager.AppSettings["exportCsvContainerName"];
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private readonly string _blobStorageConnection = ConfigurationManager.AppSettings["blobStorageConnection"];
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private readonly TraceWriter _log;
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public FileMethods(TraceWriter log)
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{
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_log = log;
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// Retrieve storage account information from connection string.
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CloudStorageAccount storageAccount = CloudStorageAccount.Parse(_blobStorageConnection);
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// Create a blob client for interacting with the blob service.
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_blobClient = storageAccount.CreateCloudBlobClient();
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}
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public async Task<bool> GenerateAndSaveCsv(IEnumerable<LicensePlateDataDocument> licensePlates)
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{
35+
var successful = false;
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37+
_log.Info("Generating CSV file");
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string blobName = $"{DateTime.UtcNow.ToString("s")}.csv";
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using (var stream = new MemoryStream())
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{
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using (var textWriter = new StreamWriter(stream))
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using (var csv = new CsvWriter(textWriter))
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{
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csv.Configuration.Delimiter = ",";
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csv.WriteRecords(licensePlates.Select(ToLicensePlateData));
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await textWriter.FlushAsync();
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_log.Info($"Beginning file upload: {blobName}");
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try
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{
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var container = _blobClient.GetContainerReference(_containerName);
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// Retrieve reference to a blob.
55+
var blob = container.GetBlockBlobReference(blobName);
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await container.CreateIfNotExistsAsync();
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// Upload blob.
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stream.Position = 0;
60+
// TODO 7: Asyncronously upload the blob from the memory stream.
61+
// COMPLETE: await blob...;
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63+
successful = true;
64+
}
65+
catch (Exception e)
66+
{
67+
_log.Error($"Could not upload CSV file: {e.Message}", e);
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successful = false;
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}
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}
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}
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return successful;
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}
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/// <summary>
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/// Used for mapping from a LicensePlateDataDocument object to a LicensePlateData object.
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/// </summary>
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/// <param name="source"></param>
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/// <returns></returns>
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private static LicensePlateData ToLicensePlateData(LicensePlateDataDocument source)
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{
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return new LicensePlateData
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{
85+
FileName = source.fileName,
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LicensePlateText = source.licensePlateText,
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TimeStamp = source.Timestamp
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};
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}
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}
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}

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