/// <summary>
/// Fetch's an entity's profile from the PlayFab server
/// </summary>
/// <param name="callerEntityToken">The entity token of the entity profile being fetched</param>
/// <returns>The entity's profile</returns>
private static async Task <EntityProfileBody> GetEntityProfile(string callerEntityToken, EntityKey entity)
{
// Construct the PlayFabAPI URL for GetEntityProfile
var getProfileUrl = GetServerApiUri("/Profile/GetProfile");
// Create the get entity profile request
var profileRequest = new GetEntityProfileRequest
{
Entity = entity
};
// Prepare the request headers
var profileRequestContent = new StringContent(PlayFabSimpleJson.SerializeObject(profileRequest));
profileRequestContent.Headers.Add("X-EntityToken", callerEntityToken);
profileRequestContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
PlayFabJsonSuccess <GetEntityProfileResponse> getProfileResponseSuccess = null;
GetEntityProfileResponse getProfileResponse = null;
// Execute the get entity profile request
using (var profileResponseMessage =
await httpClient.PostAsync(getProfileUrl, profileRequestContent))
{
using (var profileResponseContent = profileResponseMessage.Content)
{
string profileResponseString = await profileResponseContent.ReadAsStringAsync();
// Deserialize the http response
getProfileResponseSuccess =
PlayFabSimpleJson.DeserializeObject <PlayFabJsonSuccess <GetEntityProfileResponse> >(profileResponseString);
// Extract the actual get profile response from the deserialized http response
getProfileResponse = getProfileResponseSuccess?.data;
}
}
// If response object was not filled it means there was an error
if (getProfileResponseSuccess?.data == null || getProfileResponseSuccess?.code != 200)
{
throw new Exception($"Failed to get Entity Profile: code: {getProfileResponseSuccess?.code}");
}
return(getProfileResponse.Profile);
}
public static async Task <HttpResponseMessage> ExecuteFunction(
[HttpTrigger(AuthorizationLevel.Function, "post", Route = "CloudScript/ExecuteFunction")] HttpRequest request, ILogger log)
{
// Extract the caller's entity token
string callerEntityToken = request.Headers["X-EntityToken"];
// Extract the request body and deserialize
string body = await DecompressHttpBody(request);
var execRequest = PlayFabSimpleJson.DeserializeObject <ExecuteFunctionRequest>(body);
EntityKey entityKey = null;
if (execRequest.Entity != null)
{
entityKey = new EntityKey
{
Id = execRequest.Entity?.Id,
Type = execRequest.Entity?.Type
};
}
// Create a FunctionContextInternal as the payload to send to the target function
var functionContext = new FunctionContextInternal
{
CallerEntityProfile = await GetEntityProfile(callerEntityToken, entityKey),
TitleAuthenticationContext = new TitleAuthenticationContext
{
Id = Environment.GetEnvironmentVariable(TITLE_ID, EnvironmentVariableTarget.Process),
EntityToken = await GetTitleEntityToken()
},
FunctionArgument = execRequest.FunctionParameter
};
// Serialize the request to the azure function and add headers
var functionRequestContent = new StringContent(PlayFabSimpleJson.SerializeObject(functionContext));
functionRequestContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
var azureFunctionUri = ConstructLocalAzureFunctionUri(execRequest.FunctionName, request.Host);
var sw = new Stopwatch();
sw.Start();
// Execute the local azure function
using (var functionResponseMessage =
await httpClient.PostAsync(azureFunctionUri, functionRequestContent))
{
sw.Stop();
long executionTime = sw.ElapsedMilliseconds;
if (!functionResponseMessage.IsSuccessStatusCode)
{
throw new Exception($"An error occured while executing the target function locally: FunctionName: {execRequest.FunctionName}, HTTP Status Code: {functionResponseMessage.StatusCode}.");
}
// Extract the response content
using (var functionResponseContent = functionResponseMessage.Content)
{
// Prepare a response to reply back to client with and include function execution results
var functionResult = new ExecuteFunctionResult
{
FunctionName = execRequest.FunctionName,
FunctionResult = await ExtractFunctionResult(functionResponseContent),
ExecutionTimeMilliseconds = (int)executionTime,
FunctionResultTooLarge = false
};
// Reply back to client with final results
var output = new PlayFabJsonSuccess <ExecuteFunctionResult>
{
code = 200,
status = "OK",
data = functionResult
};
// Serialize the output and return it
var outputStr = PlayFabSimpleJson.SerializeObject(output);
return(new HttpResponseMessage
{
Content = new ByteArrayContent(CompressResponseBody(output, request)),
StatusCode = HttpStatusCode.OK
});
}
}
}
public static async Task <HttpResponseMessage> Run(
[HttpTrigger(AuthorizationLevel.Function, "post", Route = "CloudScript/ExecuteFunction")] HttpRequest request, ILogger log)
{
// Extract the caller's entity token
string callerEntityToken = request.Headers["X-EntityToken"];
// Extract the request body and deserialize
StreamReader reader = new StreamReader(request.Body);
string body = await reader.ReadToEndAsync();
ExecuteFunctionRequest execRequest = PlayFabSimpleJson.DeserializeObject <ExecuteFunctionRequest>(body);
// Grab the title entity token for authentication
var titleEntityToken = await GetTitleEntityToken();
var argumentsUri = GetArgumentsUri();
// Prepare the `Get Arguments` request
var contextRequest = new GetArgumentsForExecuteFunctionRequest
{
AuthenticationContext = new PlayFabAuthenticationContext
{
EntityToken = titleEntityToken
},
CallingEntity = callerEntityToken,
Request = execRequest
};
// Execute the arguments request
PlayFabResult <GetArgumentsForExecuteFunctionResult> getArgsResponse =
await PlayFabCloudScriptAPI.GetArgumentsForExecuteFunctionAsync(contextRequest);
// Validate no errors on arguments request
if (getArgsResponse.Error != null)
{
throw new Exception("Failed to retrieve functions argument");
}
// Extract the request for the next stage from the get arguments response
EntityRequest entityRequest = getArgsResponse?.Result?.Request;
// Assemble the target function's path in the current App
string routePrefix = GetHostRoutePrefix();
string functionPath = routePrefix != null ? routePrefix + "/" + execRequest.FunctionName
: execRequest.FunctionName;
// Build URI of Azure Function based on current host
var uriBuilder = new UriBuilder
{
Host = request.Host.Host,
Port = request.Host.Port ?? 80,
Path = functionPath
};
// Serialize the request to the azure function and add headers
var functionRequestContent = new StringContent(PlayFabSimpleJson.SerializeObject(entityRequest));
functionRequestContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
var sw = new Stopwatch();
sw.Start();
// Execute the local azure function
using (var client = new HttpClient())
{
using (HttpResponseMessage functionResponseMessage =
await client.PostAsync(uriBuilder.Uri.AbsoluteUri, functionRequestContent))
{
sw.Stop();
double executionTime = sw.ElapsedMilliseconds;
// Extract the response content
using (HttpContent functionResponseContent = functionResponseMessage.Content)
{
string functionResponseString = await functionResponseContent.ReadAsStringAsync();
// Prepare a response to reply back to client with and include function execution results
var functionResult = new ExecuteFunctionResult
{
FunctionName = execRequest.FunctionName,
FunctionResult = PlayFabSimpleJson.DeserializeObject(functionResponseString),
ExecutionTimeSeconds = executionTime
};
// Reply back to client with final results
var output = new PlayFabJsonSuccess <ExecuteFunctionResult>
{
code = 200,
status = "OK",
data = functionResult
};
var outputStr = PlayFabSimpleJson.SerializeObject(output);
return(new HttpResponseMessage
{
Content = new StringContent(outputStr, Encoding.UTF8, "application/json"),
StatusCode = HttpStatusCode.OK
});
}
}
}
}
