JeremyLikness

public static readonly string Alphabet = "abcdefghijklmnopqrstuvwxyz0123456789";
public static readonly int Base = Alphabet.Length;

public static string Encode(int i)
{
  if (i == 0)
  {
    return Alphabet[0].ToString();
  }
  var s = string.Empty;

JeremyLikness

public static async Task<HttpResponseMessage> Run(HttpRequestMessage req, NextId keyTable, CloudTable tableOut, TraceWriter log)
{
    if (req == null)
    {
        return req.CreateResponse(HttpStatusCode.NotFound);
    }

    Request input = await req.Content.ReadAsAsync<Request>();

    if (input == null)

JeremyLikness

if (keyTable == null)
{
  keyTable = new NextId
  {
    PartitionKey = "1",
    RowKey = "KEY",
    Id = 1024
  };
  var keyAdd = TableOperation.Insert(keyTable);
  await tableOut.ExecuteAsync(keyAdd); 

JeremyLikness

var shortUrl = Encode(keyTable.Id++);

var newUrl = new ShortUrl 
{
    PartitionKey = $"{shortUrl.First()}",
    RowKey = $"{shortUrl}",
    Url = url
};
var singleAdd = TableOperation.Insert(newUrl);
await tableOut.ExecuteAsync(singleAdd);

JeremyLikness

var operation = TableOperation.Replace(keyTable);
await tableOut.ExecuteAsync(operation);
return req.CreateResponse(HttpStatusCode.OK, result);

JeremyLikness

{
  "req": {
    "tagSource": false,
    "tagMediums": true,
    "input": "https://blog.jeremylikness.com/"
  },
  "response": [{
    "ShortUrl":"https://jlik.me/az52",
    "LongUrl":"https://blog.jeremylikness.com/?utm_medium=twitter"
  }, {

JeremyLikness

public static HttpResponseMessage Run(HttpRequestMessage req, CloudTable inputTable,
  string shortUrl, TraceWriter log)
{
    var redirectUrl = FALLBACK_URL;
    if (!String.IsNullOrWhiteSpace(shortUrl))
    {
        shortUrl = shortUrl.Trim().ToLower();
        var partitionKey = $"{shortUrl.First()}";
        TableOperation operation = TableOperation.Retrieve<ShortUrl>(partitionKey, shortUrl);
        TableResult result = inputTable.Execute(operation);

JeremyLikness

public static TelemetryClient telemetry = new TelemetryClient()
{
    InstrumentationKey = 
       System.Environment.GetEnvironmentVariable("APPINSIGHTS_INSTRUMENTATIONKEY")
};

JeremyLikness

var startTime = DateTime.UtcNow;
var timer = System.Diagnostics.Stopwatch.StartNew();

TableOperation operation = TableOperation.Retrieve<ShortUrl>(
  partitionKey, shortUrl);
TableResult result = inputTable.Execute(operation);

telemetry.TrackDependency("AzureTableStorage", "Retrieve", 
  startTime, timer.Elapsed, result.Result != null);

JeremyLikness

telemetry.TrackEvent(fullUrl.Medium);
telemetry.TrackPageView(redirectUrl);