/// <summary>
/// Method to process the request that has come into the API
/// </summary>
/// <param name="req">Request object</param>
/// <param name="table">Table object on which operations will be performed</param>
/// <param name="log">Logger interface</param>
/// <param name="identifier">Identifier passed into the API</param>
/// <param name="category">Category passed into the request</param>
/// <returns>HttpResponseMessage to return to the client</returns>
public async Task <HttpResponseMessage> Process(HttpRequest req,
CloudTable table,
ILogger log,
string identifier,
string category)
{
// Initialise variables
HttpResponseMessage response = null;
ResponseMessage msg = new ResponseMessage();
// Create a dataservice object to use
DataService ds = new DataService(table, this);
// Using the method of the request determine if retrieving or upserting an item
switch (req.Method)
{
case "GET":
dynamic result;
// attempt to get the data based on whether the identifier is set or not
if (String.IsNullOrEmpty(identifier))
{
log.LogInformation("All configs have been requested from the '{0}' category", category);
// no identifier has been supplied so retrieve all records
result = await ds.GetAll(category);
}
else
{
log.LogInformation("Configuration item has been requested from the '{0}' category: {1}", category, identifier);
result = await ds.Get(identifier, category);
}
// get the response from the datservice and setup the response for the client
// check that the result is not null, if it is then set the response accordlingly
msg = ds.GetResponseMessage();
if (result == null)
{
// set the properties on the message object
msg.SetError(String.Format("Item cannot be found: {0}", identifier), true, HttpStatusCode.NotFound);
response = msg.CreateResponse();
}
else
{
response = msg.CreateResponse(result);
}
break;
case "POST":
case "PUT":
// get the json data from the request
string json = await new StreamReader(req.Body).ReadToEndAsync();
// parse the json
Parse(json);
// Determine if there are any errors
msg = GetResponseMessage();
if (msg.IsError())
{
response = msg.CreateResponse();
}
else
{
// attempt to insert the data
bool status = await ds.Insert();
}
break;
case "DELETE":
// attempt to remove the item from the data store
result = await ds.Delete(identifier, category);
msg = ds.GetResponseMessage();
response = msg.CreateResponse();
break;
}
// Return the response
return(response);
}
