NuGet Package available on NuGet.
GTmetrix-net, a wrapper around the GTmetrix API, offers .Net developers an easy way to utilize GTmetrix's performance testing service. Using the GTmetrix-net, you can integrate performance testing into your development environment or into your application using a simple .net interface.
Within the current version it’s possible to submit test requests and retrieve Test results as well as retrieve Location, Browser and Account status (Account quota’s) information. Additional helpers for downloading resources, Async poll state and the ability to create test sets, will be added in the near future.
First you need to sign up at gtmetrix.com and obtain your unique API Key. You can generate or view your API key at the API Key box at the top of the API Details page. Once you have set up your account and generated the Key, you can start using the GTmetrix .Net client.
To install GTmetrix-net, run the following command in the Package Manager Console Install-Package gtmetrix-net
The first step is to authenticate by providing your unique API Key and Username while creating a new client connection.
using GTmetrix;
using GTmetrix.Http;
var connection = Connection.Create("Api_Key", "Email");There are two ways of submitting a test request; The first one works similar to the underlying GTmetrix API and will return a test id. This id can be used to retrieve the test results at a later time. The second option is a async call which will return as soon as your test results are available. Let’s take a look at both options.
Submitting a new Test request is simple. The first step is to create a new TestRequest found within the GTmetrix.Model namespace. The constructor overloads are helpers and can be used to override the browser, location and connection speed defaults. Or assign optional values by using its properties. After having setup your TestRequest, call SubmitTest, part of the GTmetrix-net client, and make sure to provide the test request.
var client = new Client(connection);
var request = new TestRequest(
new Uri("http://devslice.net"),
Locations.London,
Browsers.Chrome)
{
// Optional settings
EnableAdBlock = true,
};
var response = client.SubmitTest(request);
if(response.Result.StatusCode == HttpStatusCode.OK)
{
var id = response.result.Body.TestId;
}By using the Async version you don’t have to deal with separate calls for submitting and retrieving your test. This is especially helpful when you want to results as soon as available.
var client = new Client(connection);
var request = new TestRequest(
new Uri("http://devslice.net"),
Locations.London,
Browsers.Chrome)
{
// Optional settings
EnableAdBlock = true,
};
var response = client.SubmitTestAsync(request);
if (response.Result.StatusCode == HttpStatusCode.OK &&
response.Result.Body.State == ResultStates.Completed)
{
var pageLoadTime = response.Result.Body.Results.PageLoadTime;
...
}You can also provide the raw API values for browser, location and connection speed if desired. The possible values are available within gtmetrix's API docs.
new TestRequest(new Uri(TestData.TestWebsite))
{
Browser = 3,
ConnectionSpeed = "5000/1000/30",
Location = 2
};There are two possible ways to retrieve the test results; manually polling or awaiting the call using the async version.
Note that the test ID is only valid for 3 days. The GTmetrix report for the URL will be valid for 30 days.
Test results can be gathered by calling client.GetTest("test_id");. Just like the underlying GTmetrix API, some data might not be present based on the status your test request (Queued, Started, Completed, Error). Therefore, you will have to manually poll until the status has changed to Completed or Error.
// poll loop logic
var response = client.GetTest("Test_Id");
var result = responseCheck.Result;
if (result.StatusCode == HttpStatusCode.OK && result.Body.State == ResultStates.Completed)
{
var pageLoadTime = result.Body.Results.PageLoadTime;
...
}
// poll loop logicThe Async version eliminates the need to poll manually. By default, the wrapper will periodically check if the test results are available. At the moment polling will be performed for a maximum of 10 times with a 2 second wait period between each poll request.
var response = client.GetTestAsync(result.Body.TestId);
var result = response.Result;
if (result.StatusCode == HttpStatusCode.OK && result.Body.State == ResultStates.Completed)
{
var pageLoadTime = result.Body.Results.PageLoadTime;
...
}To retrieve the list with all possible locations you can call client.Locations()
var response = client.Locations();
if(response.Result.StatusCode == HttpStatusCode.OK)
{
foreach (var item in response.Result.Body)
{
var locationId = item.Id;
var locationName = item.Name;
...
}
}To retrieve the list with all possible browsers you can call client.Browsers()
var response = client.Browsers();
if(response.Result.StatusCode == HttpStatusCode.OK)
{
foreach (var item in response.Result.Body)
{
var browsersId = item.Id;
var browsersName = item.Name;
...
}
}Test resources such as the Har, SpeedTest and Yslow files can be retrieved using client.DownloadResource("test_id", ResourceTypes.{type}). The information is exposed as a bytes array and can be accessed as displayed in the example below:
var response = client.DownloadResource("test_id", ResourceTypes.PageSpeed);
if(response.Result.StatusCode == HttpStatusCode.OK)
{
var pageSpeedJson = System.Text.Encoding.UTF8.GetString(response.Result.Body);
}Saving a file to disk is simple as can be seen in the example below;
var response = client.DownloadResource("test_id", ResourceTypes.PageSpeed);
if(response.Result.StatusCode == HttpStatusCode.OK)
{
File.WriteAllBytes("c:\\test\\PageSpeed.json", response.Result.Body);
}Manage you user settings programmatically is simple as displayed within the code samples below. However, make sure you are using the UserSettingsClient and matching UserSettingsConnection. This is required because this information isn’t exposed via the official GTmetrix API. Use your email address and GTmetrix password when initiating a new connection.
Currently most information is exposed as read-only. You can however add and remove CDN entries.
var client = new UserSettingsClient(UserSettingsConnection.Create("Email", "Password"));
var response = client.GetSettings();
if(response.Result.StatusCode == HttpStatusCode.OK)
{
var email = response.Result.Body.Email;
...
}// Retrieve settings first as per above example.
userSettings.Cdn.Add("cdn.devslice.net");
var response = client.UpdateSettings(userSettings);
...Copyright (c) 2016 Kevin Bronsdijk
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