public static IServiceCollection AddLightStep(this IServiceCollection services)
{
if (services == null)
{
throw new ArgumentNullException(nameof(services));
}
services.AddSingleton <ITracer>(serviceProvider =>
{
string serviceName = Assembly.GetEntryAssembly().GetName().Name;
ILoggerFactory loggerFactory = serviceProvider.GetRequiredService <ILoggerFactory>();
var options = new LightStep.Options(_lightStepProjectKey, new SatelliteOptions("collector.lightstep.com"));
ITracer tracer = new LightStep.Tracer(options);
GlobalTracer.Register(tracer);
return(tracer);
});
return(services);
}
static void Main(string[] args)
{
if (args.Length == 0)
{
Console.WriteLine("Invalid number of arguments supplied");
Environment.Exit(-1);
}
switch (args[0])
{
case "start":
Parser.Default.ParseArguments <ServerOptions>(args).MapResult(
(ServerOptions options) =>
{
Console.WriteLine($"Started as process with id {System.Diagnostics.Process.GetCurrentProcess().Id}");
// Set hostname/ip address
string hostname = options.Host;
if (string.IsNullOrEmpty(hostname))
{
Console.WriteLine($"Reading host address from {CART_SERVICE_ADDRESS} environment variable");
hostname = Environment.GetEnvironmentVariable(CART_SERVICE_ADDRESS);
if (string.IsNullOrEmpty(hostname))
{
Console.WriteLine($"Environment variable {CART_SERVICE_ADDRESS} was not set. Setting the host to 0.0.0.0");
hostname = "0.0.0.0";
}
}
// Set the port
int port = options.Port;
if (options.Port <= 0)
{
Console.WriteLine($"Reading cart service port from {CART_SERVICE_PORT} environment variable");
string portStr = Environment.GetEnvironmentVariable(CART_SERVICE_PORT);
if (string.IsNullOrEmpty(portStr))
{
Console.WriteLine($"{CART_SERVICE_PORT} environment variable was not set. Setting the port to 8080");
port = 8080;
}
else
{
port = int.Parse(portStr);
}
}
// Setup LightStep Tracer
Console.WriteLine($"Reading Lightstep Access Token {LIGHTSTEP_ACCESS_TOKEN} environment variable");
string serviceName = "cartservice";
string accessToken = Environment.GetEnvironmentVariable(LIGHTSTEP_ACCESS_TOKEN);
string lsHost = Environment.GetEnvironmentVariable(LIGHTSTEP_HOST);
int lsPort = Int32.Parse(Environment.GetEnvironmentVariable(LIGHTSTEP_PORT));
bool plaintext = (Environment.GetEnvironmentVariable(LIGHTSTEP_PLAINTEXT) == "true");
var satelliteOptions = new SatelliteOptions(lsHost, lsPort, plaintext);
// BEGIN
// Used for GCP Demo
var overrideTags = new Dictionary <string, object>
{
{ LightStepConstants.ComponentNameKey, serviceName },
{ "service.version", RedisCartStore.updateUserProfileValue ? RedisCartStore.UnhealthyVersion : RedisCartStore.HealthyVersion },
{ "cartservice.identity", "f738e221f8" },
{ "lightstep.hostname", serviceName + "-0" },
};
// END
var tracerOptions = new Options(accessToken).
WithSatellite(satelliteOptions).
WithTags(overrideTags);
var lightStepTracer = new LightStep.Tracer(
tracerOptions,
new LightStepSpanRecorder(),
new B3Propagator()
);
GlobalTracer.Register(lightStepTracer);
// Set redis cache host (hostname+port)
ICartStore cartStore;
string redis = ReadRedisAddress(options.Redis);
// Redis was specified via command line or environment variable
if (!string.IsNullOrEmpty(redis))
{
// If you want to start cart store using local cache in process, you can replace the following line with this:
// cartStore = new LocalCartStore();
cartStore = new RedisCartStore(redis);
return(StartServer(hostname, port, cartStore));
}
else
{
Console.WriteLine("Redis cache host(hostname+port) was not specified. Starting a cart service using local store");
Console.WriteLine("If you wanted to use Redis Cache as a backup store, you should provide its address via command line or REDIS_ADDRESS environment variable.");
cartStore = new LocalCartStore();
}
return(StartServer(hostname, port, cartStore));
},
errs => 1);
break;
default:
Console.WriteLine("Invalid command");
break;
}
}
