public ShortUrl(string resourceId, string originalUrl)
{
this.dynamoItem = new ShortUrlItem
{
resourceId = resourceId,
originalUrl = originalUrl,
ttl = new DateTimeOffset(DateTime.UtcNow).ToUnixTimeSeconds() + 120
};
}
public async Task <APIGatewayProxyResponse> FunctionHandler(APIGatewayProxyRequest apigProxyEvent, ILambdaContext context)
{
//string tableName = System.Environment.GetEnvironmentVariable("DYNAMO_TABLE");
LambdaLogger.Log("EVENT: " + JsonConvert.SerializeObject(apigProxyEvent));
try
{
string resourceId = null;
int idLength = 1;
if (apigProxyEvent.Path == "/shortUrl")
{
resourceId = createId(idLength);
LambdaLogger.Log("Test environment for set");
while (true)
{
resourceId = createId(idLength);
LambdaLogger.Log("Generated id " + resourceId);
ShortUrlItem item = await table.get(resourceId);
if (item == null)
{
ApiUrlRequestBody requestBody = JsonConvert.DeserializeObject <ApiUrlRequestBody>(apigProxyEvent.Body);
await table.save(new ShortUrl(resourceId, requestBody.originalUrl).dynamoItem);
break;
}
LambdaLogger.Log("ITEM: " + item.ToString() + " ID: " + item.resourceId);
idLength++;
}
return(CreateBasicResponse(new ApiBody
{
resourceId = resourceId,
completeUrl = createCompleteUrl(resourceId)
}));
}
else
{
LambdaLogger.Log("Test environment for get");
ShortUrlItem item = await table.get(apigProxyEvent.PathParameters["resourceId"]);
LambdaLogger.Log("ITEM: " + item.ToString() + " ID: " + item.resourceId);
resourceId = item.resourceId;
if (item.ttl < new DateTimeOffset(DateTime.UtcNow).ToUnixTimeSeconds())
{
throw new Exception("Expired url");
}
return(CreateRedirectResponse(item.originalUrl));
}
} catch (Exception e)
{
return(CreateErrorResponse());
}
}
public async Task <bool> save(ShortUrlItem urlItem)
{
await context.SaveAsync(urlItem);
return(true);
}