public static async Task <IActionResult> Run(
[HttpTrigger(AuthorizationLevel.Anonymous, "post", Route = null)] HttpRequest req,
ILogger log)
{
// set account information
// create the table client
// get a reference to the table
var postcodeTable = new CloudStorageAccount(
new Microsoft.WindowsAzure.Storage.Auth.StorageCredentials(
Environment.GetEnvironmentVariable("PostcodeTableAccountName"),
Environment.GetEnvironmentVariable("PostcodeTableKey")),
true)
.CreateCloudTableClient()
.GetTableReference("postcodeTable");
// drop all rows from exsiting table
var allRecords = (await postcodeTable.ExecuteQuerySegmentedAsync(
new TableQuery <PostcodeRecord>().Where(
TableQuery.GenerateFilterCondition(
"PartitionKey",
QueryComparisons.Equal,
"PostcodeData")),
null)).Results;
var batchDeleteOperation = new TableBatchOperation();
if (allRecords.Count > 0)
{
foreach (var recordChunk in allRecords
.Select((x, i) => new { Index = i, Value = x })
.GroupBy(x => x.Index / 100)
.Select(x => x.Select(v => v.Value).ToList())
.ToList())
{
foreach (var record in recordChunk)
{
batchDeleteOperation.Delete(record);
}
await postcodeTable.ExecuteBatchAsync(batchDeleteOperation);
}
}
var sr = new StreamReader(req.Body);
// discard header
sr.ReadLine();
var line = sr.ReadLine();
var counter = 0;
while (!(line is null))
{
var lineArray = line.Split(',');
var postcode = lineArray[0].Replace(" ", string.Empty).ToUpper();
log.LogInformation($"Adding Postcode {postcode} ({counter})");
await postcodeTable.ExecuteAsync(
TableOperation.Insert(
new PostcodeRecord()
{
PartitionKey = "PostcodeData",
RowKey = postcode,
Flag = lineArray[1] == "1"
}));
counter++;
line = sr.ReadLine();
}
return(new OkObjectResult($"Added {counter} postcodes"));
}