/// <summary>
/// A simple function that takes a string and does a ToUpper
/// </summary>
/// <param name="input"></param>
/// <param name="context"></param>
/// <returns></returns>
public string FunctionHandler(string input, ILambdaContext context)
{
var envProvider = new EnvironmentProvider(EnvironmentConfigurationProvider.Config, new ResourceFetcher());
var logger = new MetricsLogger();
var dimensionSet = new DimensionSet();
dimensionSet.AddDimension("Service", "Aggregator");
dimensionSet.AddDimension("Region", "us-west-2");
logger.PutDimensions(dimensionSet);
logger.SetNamespace("EMFLambda");
logger.PutMetric("ProcessingLatency", 101, Unit.MILLISECONDS);
logger.PutMetric("ProcessingLatency", 100, Unit.MILLISECONDS);
logger.PutMetric("ProcessingLatency", 99, Unit.MILLISECONDS);
logger.PutMetric("Count", 3, Unit.COUNT);
logger.PutProperty("AccountId", "123456789");
logger.PutProperty("RequestId", "422b1569-16f6-4a03-b8f0-fe3fd9b100f8");
logger.PutProperty("DeviceId", "61270781-c6ac-46f1-baf7-22c808af8162");
Dictionary <string, object> payLoad = new Dictionary <string, object>
{
{ "sampleTime", 123456789 },
{ "temperature", 273.0 },
{ "pressure", 101.3 }
};
logger.PutProperty("Payload", payLoad);
logger.Flush();
return(input?.ToUpper());
}
static void Main(string[] args)
{
var init = true;
var configuration = new Configuration
{
LogGroupName = "/Canary/Dotnet/CloudWatchAgent/Metrics",
EnvironmentOverride = Environments.ECS,
AgentEndPoint = "tcp://127.0.0.1:25888"
};
var loggerFactory = LoggerFactory.Create(builder =>
builder
.SetMinimumLevel(LogLevel.Information)
.AddConsole());
EnvironmentConfigurationProvider.Config = configuration;
// get the assembly version (this does not reflect NuGet pre-releases)
var packageVersion = GetPackageVersion();
while (true)
{
using (var logger = new MetricsLogger(loggerFactory))
{
logger.SetNamespace("Canary");
var dimensionSet = new DimensionSet();
dimensionSet.AddDimension("Runtime", "Dotnet");
dimensionSet.AddDimension("Platform", "ECS");
dimensionSet.AddDimension("Agent", "CloudWatchAgent");
dimensionSet.AddDimension("Version", packageVersion);
logger.SetDimensions(dimensionSet);
using (var currentProcess = System.Diagnostics.Process.GetCurrentProcess())
{
// https://github.com/dotnet/corefx/blob/3633ea2c6bf9d52029681efeedd84fd7a06eb6ba/src/System.Diagnostics.Process/src/System/Diagnostics/ProcessManager.Linux.cs#L137
logger.PutMetric("Memory.RSS", currentProcess.WorkingSet64, Unit.BYTES);
}
logger.PutMetric("Invoke", 1, Unit.NONE);
if (init)
{
init = false;
logger.PutMetric("Init", 1, Unit.NONE);
}
logger.PutMetric("Memory.HeapUsed", GC.GetTotalMemory(false), Unit.BYTES);
}
Thread.Sleep(1_000);
}
}
public void TestPutMetricWithNoUnit()
{
string expectedKey = "test";
double expectedValue = 2.0;
_metricsLogger.PutMetric(expectedKey, expectedValue);
_metricsLogger.Flush();
var metricDirective = typeof(MetricsContext)
.GetField("_metricDirective", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance)
.GetValue(_sink.MetricsContext) as MetricDirective;
var metricDefinition = metricDirective.Metrics.FirstOrDefault(m => m.Name == expectedKey);
Assert.Equal(expectedValue, metricDefinition.Values[0]);
Assert.Equal(Unit.NONE, metricDefinition.Unit);
}
private void LogMetric(String metricName)
{
MetricsLogger logger = new MetricsLogger(new EnvironmentProvider(EnvironmentConfigurationProvider.Config, new ResourceFetcher()), NullLoggerFactory.Instance);
logger.PutDimensions(_dimensions);
logger.PutMetric(metricName, 100, Unit.MILLISECONDS);
logger.Flush();
}