/// <summary>
/// Parses the scraped text and returns it as a set of metrics
/// </summary>
/// <param name="scrapedText">The text to be parsed</param>
/// <returns>A dictionary of metrics tretrieved keyed by metric name</returns>
public static Dictionary <string, MetricScrapingContainer> Parse(string scrapedText)
{
var results = new Dictionary <string, MetricScrapingContainer>();
var lines = scrapedText.Split("\n", StringSplitOptions.RemoveEmptyEntries);
MetricScrapingContainer currentContainer = null;
foreach (var line in lines)
{
var trimmedLine = line.TrimStart();
if (trimmedLine.StartsWith("# HELP"))
{
if (currentContainer != null)
{
results.Add(currentContainer.MetricName, currentContainer);
}
currentContainer = new MetricScrapingContainer();
currentContainer.MetricHelp = trimmedLine.Substring(trimmedLine.IndexOf(' ', 2) + 1);
}
else if (trimmedLine.StartsWith("# TYPE"))
{
var workingType = trimmedLine.Substring(trimmedLine.IndexOf(' ', 2) + 1);
var workingElements = workingType.Split(" ");
if (workingElements.Length > 1)
{
currentContainer.MetricName = workingElements[0];
currentContainer.MetricType = workingElements[1];
}
}
else
{
if (double.TryParse(trimmedLine.Substring(trimmedLine.IndexOf(" ") + 1).Trim(), out var value))
{
currentContainer.MetricValue = value;
}
}
}
if (currentContainer != null && !results.ContainsKey(currentContainer.MetricName))
{
results.Add(currentContainer.MetricName, currentContainer);
}
return(results);
}
public void SimpleCountIteration()
{
var endpoint = @"http://localhost:9610/metrics";
var client = new HttpClient();
var results = new List <bool>();
var scraped = new List <MetricScrapingContainer>();
var continueScraping = true;
var startScraping = false;
Task scraper;
using (var factory = new MetricFactory())
{
factory.AddPrometheus("prometheus", 9610);
var summary = factory.CreateSummary("Metric1", "Test metric for #1", 5, true, new string[] { "label1", "label2" });
scraper = Task.Factory.StartNew(() =>
{
while (continueScraping)
{
if (startScraping)
{
var response = client.GetAsync(endpoint).GetAwaiter().GetResult();
results.Add(response.IsSuccessStatusCode);
if (response.IsSuccessStatusCode)
{
var responseString = response.Content.ReadAsStringAsync().GetAwaiter().GetResult();
var metricsScraped = MetricScrapingContainer.Parse(responseString);
if (metricsScraped.ContainsKey("Metric1"))
{
scraped.Add(metricsScraped["Metric1"]);
}
}
Task.Delay(1000).GetAwaiter().GetResult();
}
else
{
Task.Delay(10).GetAwaiter().GetResult();
}
}
});
for (var index = 0; index < 1500; index++)
{
startScraping = true;
summary.Observe(_doubleValues[index % _doubleValues.Length]);
if (index < 1499)
{
Task.Delay(10).GetAwaiter().GetResult();
}
}
Task.Delay(1000).GetAwaiter().GetResult();
}
continueScraping = false;
Assert.IsTrue(scraped.Count > 0, "Scraped value count not expected");
}
public void ScrapableBroker()
{
var endpoint = @"http://localhost:9610/metrics";
var client = new HttpClient();
var results = new List <bool>();
var scraped = new List <MetricScrapingContainer>();
var continueScraping = true;
var startScraping = false;
Task scraper;
using (var factory = new MetricFactory())
{
factory.AddPrometheus("prometheus", 9610);
var counter = factory.CreateCounter("demoCounter", "A test counter", false, null);
scraper = Task.Factory.StartNew(() =>
{
while (continueScraping)
{
if (startScraping)
{
var response = client.GetAsync(endpoint).GetAwaiter().GetResult();
results.Add(response.IsSuccessStatusCode);
if (response.IsSuccessStatusCode)
{
var responseString = response.Content.ReadAsStringAsync().GetAwaiter().GetResult();
var metricsScraped = MetricScrapingContainer.Parse(responseString);
if (metricsScraped.ContainsKey("demoCounter"))
{
scraped.Add(metricsScraped["demoCounter"]);
}
}
Task.Delay(1000).GetAwaiter().GetResult();
}
else
{
Task.Delay(10).GetAwaiter().GetResult();
}
}
});
for (var index = 0; index <= 500; index++)
{
counter.Increment();
startScraping = true;
Thread.Sleep(100);
}
continueScraping = false;
}
Assert.IsFalse(!results.Any(item => item), "There should be successful readings found");
Assert.IsTrue(results.Count > 40, "At least 40 results should have been collected in this time");
Assert.IsTrue(scraped.Count > 40, "At least 40 values for the counter should have been found");
}
public void SimpleCountIteration()
{
var endpoint = @"http://localhost:9610/metrics";
var client = new HttpClient();
var results = new List <bool>();
var scraped = new List <MetricScrapingContainer>();
var continueScraping = true;
var startScraping = false;
Task scraper;
using (var factory = new MetricFactory())
{
factory.AddPrometheus("prometheus", 9610);
var pulse = factory.CreatePulse("demoPulse", "A test counter", false, null);
scraper = Task.Factory.StartNew(() =>
{
while (continueScraping)
{
if (startScraping)
{
var response = client.GetAsync(endpoint).GetAwaiter().GetResult();
results.Add(response.IsSuccessStatusCode);
if (response.IsSuccessStatusCode)
{
var responseString = response.Content.ReadAsStringAsync().GetAwaiter().GetResult();
var metricsScraped = MetricScrapingContainer.Parse(responseString);
if (metricsScraped.ContainsKey("demoPulse"))
{
scraped.Add(metricsScraped["demoPulse"]);
}
}
Task.Delay(1000).GetAwaiter().GetResult();
}
else
{
Task.Delay(10).GetAwaiter().GetResult();
}
}
});
for (var index = 0; index < 500; index++)
{
pulse.Observe();
startScraping = true;
if (index < 499)
{
Task.Delay(10).GetAwaiter().GetResult();
}
}
continueScraping = false;
}
Assert.IsFalse(!results.Any(item => item), "There should be successful readings found");
Assert.IsTrue(results.Count > 4, $"At least 4 results should have been collected in this time (value {results.Count})");
Assert.IsTrue(scraped.Count > 4, $"At least 4 values for the counter should have been found (value {scraped.Count})");
Assert.IsTrue((scraped.Max(item => item.MetricValue ?? 0)) >= 400, $"Maximum value count not expected (value {scraped.Max(item => item.MetricValue ?? 0)})");
}
