# Stage 1: Build the application
FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
WORKDIR /app

# Copy the project file and restore dependencies
COPY *.csproj ./
RUN dotnet restore

# Copy the remaining source code
COPY . .

# Build the application
RUN dotnet publish -c Release -o out

# Stage 2: Create a runtime image
FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS runtime
WORKDIR /app

# Copy the build output from stage 1
COPY --from=build /app/out ./

# Datadog specific
RUN mkdir -p /datadog/tracer
RUN mkdir -p /home/LogFiles/dotnet

ADD https://github.com/DataDog/dd-trace-dotnet/releases/download/v2.51.0/datadog-dotnet-apm-2.51.0.tar.gz /datadog/tracer
RUN cd /datadog/tracer && tar -zxf datadog-dotnet-apm-2.51.0.tar.gz

# Set the entry point for the application
ENTRYPOINT ["dotnet", "<your dotnet app>.dll"]

from flask import Flask, Response
from datadog import initialize, statsd
import os
import ddtrace
import logging

ddtrace.patch(logging=True)

FORMAT = ('%(asctime)s %(levelname)s [%(name)s] [%(filename)s:%(lineno)d] '
         '[dd.service=%(dd.service)s dd.env=%(dd.env)s dd.version=%(dd.version)s dd.trace_id=%(dd.trace_id)s dd.span_id=%(dd.span_id)s] '
         '- %(message)s')
logging.basicConfig(filename=f'/home/LogFiles/app-{os.getenv(COMPUTERNAME)}.log', format=FORMAT)
log = logging.getLogger(__name__)
log.level = logging.INFO

options = {
   'statsd_host':'127.0.0.1',
   'statsd_port':8125
}

initialize(**options)

app = Flask(__name__)

@app.route("/")
def home():
   statsd.increment('page.views')
   log.info('Hello Datadog!!')
   return Response('💜 Hello Datadog!! 💜', status=200, mimetype='application/json')

app.run(host="0.0.0.0", port=8080)

package com.example.springboot;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import com.timgroup.statsd.NonBlockingStatsDClientBuilder;
import com.timgroup.statsd.StatsDClient;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

@RestController
public class HelloController {
   private static final StatsDClient Statsd = new NonBlockingStatsDClientBuilder().hostname("localhost").port(8125).build();
   private static final Log logger = LogFactory.getLog(HelloController.class);
   @GetMapping("/")
   public String index() {
       Statsd.incrementCounter("page.views");
       logger.info("Hello Azure!");
       return "💜 Hello Azure! 💜";
   }

}

package main

import (
   "fmt"
   "log"
   "net/http"
   "os"
   "path/filepath"
   "github.com/DataDog/datadog-go/v5/statsd"
   "gopkg.in/DataDog/dd-trace-go.v1/ddtrace"
   "gopkg.in/DataDog/dd-trace-go.v1/ddtrace/tracer"
)

const logDir = "/home/LogFiles"

var logFile *os.File
var logCounter int
var dogstatsdClient *statsd.Client

func handler(w http.ResponseWriter, r *http.Request) {
   log.Println("Hello Datadog!")
   span := tracer.StartSpan("maincontainer", tracer.ResourceName("/handler"))
   defer span.Finish()
   logCounter++
   writeLogsToFile(fmt.Sprintf("received request %d", logCounter), span.Context())
   dogstatsdClient.Incr("request.count", []string{}, 1)
   fmt.Fprintf(w, "💜 Hello Datadog! 💜")
}

func writeLogsToFile(log_msg string, context ddtrace.SpanContext) {
   span := tracer.StartSpan(
       "writeLogToFile",
       tracer.ResourceName("/writeLogsToFile"),
       tracer.ChildOf(context))
   defer span.Finish()
   _, err := logFile.WriteString(log_msg + "\n")
   if err != nil {
       log.Println("Error writing to log file:", err)
   }
}

func main() {
   log.Print("Main container started...")

   err := os.MkdirAll(logDir, 0755)
   if err != nil {
       panic(err)
   }

   logFilePath := filepath.Join(logDir, fmt.Sprintf("app-%s.log", os.Getenv("COMPUTERNAME")))
   log.Println("Saving logs in ", logFilePath)
   logFileLocal, err := os.OpenFile(logFilePath, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0644)
   if err != nil {
       panic(err)
   }
   defer logFileLocal.Close()

   logFile = logFileLocal

   dogstatsdClient, err = statsd.New("localhost:8125")
   if err != nil {
       panic(err)
   }
   defer dogstatsdClient.Close()

   tracer.Start()
   defer tracer.Stop()

   http.HandleFunc("/", handler)
   log.Fatal(http.ListenAndServe(":8080", nil))
}

<?php

require __DIR__ . '/vendor/autoload.php';

use DataDog\DogStatsd;
use Monolog\Logger;
use Monolog\Handler\StreamHandler;
use Monolog\Formatter\JsonFormatter;

$statsd = new DogStatsd(
   array('host' => '127.0.0.1',
         'port' => 8125,
    )
 );

$log = new logger('datadog');
$formatter = new JsonFormatter();

$stream = new StreamHandler('/home/LogFiles/app-'.getenv("COMPUTERNAME").'.log', Logger::DEBUG);
$stream->setFormatter($formatter);

$log->pushHandler($stream);

$log->pushProcessor(function ($record) {
 $record['message'] .= sprintf(
     ' [dd.trace_id=%s dd.span_id=%s]',
     \DDTrace\logs_correlation_trace_id(),
     \dd_trace_peek_span_id()
 );
 return $record;
});

$log->info("Hello Datadog!");
echo '💜 Hello Datadog! 💜';

$log->info("sending a metric");
$statsd->increment('page.views', 1, array('environment'=>'dev'));

?>