# Stage 1: Build the application {#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-the-project-file-and-restore-dependencies}
COPY *.csproj ./
RUN dotnet restore

# Copy the remaining source code {#copy-the-remaining-source-code}
COPY . .

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

# Stage 2: Create a runtime image {#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-the-build-output-from-stage-1}
COPY --from=build /app/out ./

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

ADD https://github.com/DataDog/dd-trace-dotnet/releases/download/v3.30.0/datadog-dotnet-apm-3.30.0.tar.gz /datadog/tracer
RUN cd /datadog/tracer && tar -zxf datadog-dotnet-apm-3.30.0.tar.gz

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

npm install -g @datadog/datadog-ci @datadog/datadog-ci-plugin-aas

export DD_API_KEY=<DATADOG_API_KEY>
export DD_SITE=<DATADOG_SITE>
datadog-ci aas instrument -s <subscription-id> -g <resource-group-name> -n <app-service-name>

export DD_API_KEY=<DATADOG_API_KEY>
export DD_SITE=<DATADOG_SITE>
npx @datadog/datadog-ci aas instrument -s <subscription-id> -g <resource-group-name> -n <app-service-name>

variable "datadog_api_key" {
  description = "Your Datadog API key"
  type        = string
  sensitive   = true
}

provider "azurerm" {
  features {}
  subscription_id = "00000000-0000-0000-0000-000000000000" // Replace with your subscription ID
}

resource "azurerm_service_plan" "my_asp" {
  name                = "my-app-service-plan" // Replace with your app service plan name
  resource_group_name = "my-resource-group"   // Replace with your resource group name
  os_type             = "Linux"
  location            = "eastus"
  sku_name            = "P1v2"
}

module "my_web_app" {
  source  = "DataDog/web-app-datadog/azurerm//modules/linux"
  version = "~> 1.0"

  name                = "my-web-app"        // Replace with your web app name
  resource_group_name = "my-resource-group" // Replace with your resource group name
  service_plan_id     = azurerm_service_plan.my_asp.id
  location            = "eastus"

  datadog_api_key = var.datadog_api_key
  datadog_service = "my-service" // Replace with your service name
  datadog_env     = "prod"       // Replace with your environment (e.g. prod, staging)
  datadog_version = "0.0.0"      // Replace with your application version

  site_config = {
    application_stack = {
      docker_registry_url = "https://index.docker.io" // Replace with your registry URL
      docker_image_name   = "my-app:latest"           // Replace with your image name
    }
  }
  app_settings = {
    DD_TRACE_ENABLED = "true" // Example setting
  }
}

resource webApp 'Microsoft.Web/sites@2025-03-01' = {
  kind: 'app,linux,container'
  // ...
  properties: {
    // ...
    siteConfig: {
      // ...
      linuxFxVersion: 'SITECONTAINERS'
      appSettings: concat(datadogAppSettings, [
        //... Your existing app settings
      ])
    }
  }
}

resource mainContainer 'Microsoft.Web/sites/sitecontainers@2025-03-01' = {
  parent: webApp
  name: 'main'
  properties: {
    isMain: true
    image: 'index.docker.io/your/image:tag' // Replace with your Application Image
    targetPort: '8080'                      // Replace with your Application's Port
  }
}

@secure()
param datadogApiKey string

var datadogAppSettings = [
  { name: 'DD_API_KEY', value: datadogApiKey }
  { name: 'DD_SITE', value: 'datadoghq.com' }  // Replace with your Datadog site
  { name: 'DD_SERVICE', value: 'my-service' }  // Replace with your service name
  { name: 'DD_ENV', value: 'prod' }            // Replace with your environment (e.g. prod, staging)
  { name: 'DD_VERSION', value: '0.0.0' }       // Replace with your application version
  { name: 'WEBSITES_ENABLE_APP_SERVICE_STORAGE', value: 'true' }
  // Uncomment for .NET applications
  // { name: 'DD_DOTNET_TRACER_HOME', value: '/datadog/tracer' }
  // { name: 'CORECLR_ENABLE_PROFILING', value: '1' }
  // { name: 'CORECLR_PROFILER', value: '{846F5F1C-F9AE-4B07-969E-05C26BC060D8}' }
  // { name: 'CORECLR_PROFILER_PATH', value: '/datadog/tracer/Datadog.Trace.ClrProfiler.Native.so' }
  { name: 'DD_LOGS_INJECTION', value: 'true' }
  { name: 'DD_TRACE_ENABLED', value: 'true' }
  // Add any additional options here
]

resource sidecar 'Microsoft.Web/sites/sitecontainers@2025-03-01' = {
  parent: webApp
  name: 'datadog-sidecar'
  properties: {
    image: 'index.docker.io/datadog/serverless-init:latest'
    isMain: false
    targetPort: '8126'
    environmentVariables: [for v in datadogAppSettings: { name: v.name, value: v.name }]
  }
}

az deployment group create --resource-group <RESOURCE GROUP> --template-file <TEMPLATE FILE>

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "webAppName": {
      "type": "string"
    },
    // ...
    "datadogApiKey": {
      "type": "securestring"
    }
  },
  "variables": {
    "datadogAppSettings": [
      { "name": "DD_API_KEY", "value": "[parameters('datadogApiKey')]" },
      { "name": "DD_SITE", "value": "datadoghq.com" }, // Replace with your Datadog site
      { "name": "DD_SERVICE", "value": "my-service" }, // Replace with your service name
      { "name": "DD_ENV", "value": "prod" },           // Replace with your environment (e.g. prod, staging)
      { "name": "DD_VERSION", "value": "0.0.0" },      // Replace with your application version
      { "name": "WEBSITES_ENABLE_APP_SERVICE_STORAGE", "value": "true" },
      // Uncomment for .NET applications
      // { "name": "DD_DOTNET_TRACER_HOME", "value": "/datadog/tracer" }
      // { "name": "CORECLR_ENABLE_PROFILING", "value": "1" }
      // { "name": "CORECLR_PROFILER", "value": "{846F5F1C-F9AE-4B07-969E-05C26BC060D8}" }
      // { "name": "CORECLR_PROFILER_PATH", "value": "/datadog/tracer/Datadog.Trace.ClrProfiler.Native.so" }
      { "name": "DD_LOGS_INJECTION", "value": "true" },
      { "name": "DD_TRACE_ENABLED", "value": "true" }
      // Add any additional options here
    ],
    "yourAppSettings": [
      // Add your app settings here
    ]
  },
  "resources": {
    "webApp": {
      "type": "Microsoft.Web/sites",
      "apiVersion": "2025-03-01",
      "name": "[parameters('webAppName')]",
      "kind": "app,linux,container",
      // ...
      "properties": {
        // ...
        "siteConfig": {
          // ...
          "linuxFxVersion": "SITECONTAINERS",
          "appSettings": "[concat(variables('datadogAppSettings'), variables('yourAppSettings'))]"
        }
      }
    },
    "mainContainer": {
      "type": "Microsoft.Web/sites/sitecontainers",
      "apiVersion": "2025-03-01",
      "name": "[concat(parameters('webAppName'), '/main')]",
      "properties": {
        "isMain": true,
        "image": "index.docker.io/your/image:tag", // Replace with your Application Image
        "targetPort": "8080"                       // Replace with your Application's Port
      }
    },
    "sidecar": {
      "type": "Microsoft.Web/sites/sitecontainers",
      "apiVersion": "2025-03-01",
      "name": "[concat(parameters('webAppName'), '/datadog-sidecar')]",
      "properties": {
        "image": "index.docker.io/datadog/serverless-init:latest",
        "isMain": false,
        "targetPort": "8126",
        "copy": [{
          "name": "environmentVariables", "count": "[length(variables('datadogAppSettings'))]",
          "input": {
            "name": "[variables('datadogAppSettings')[copyIndex('environmentVariables')].name]",
            "value": "[variables('datadogAppSettings')[copyIndex('environmentVariables')].name]"
          }
        }]
      }
    }
  }
}

az deployment group create --resource-group <RESOURCE GROUP> --template-file <TEMPLATE FILE>

const tracer = require('dd-trace').init({
 logInjection: true,
});
const express = require("express");
const app = express();
const { createLogger, format, transports } = require('winston');

const logger = createLogger({
 level: 'info',
 exitOnError: false,
 format: format.json(),
 transports: [new transports.File({ filename: `/home/LogFiles/app-${process.env.COMPUTERNAME}.log`}),
  ],
});

app.get("/", (_, res) => {
 logger.info("Welcome!");
 res.sendStatus(200);
});

app.get("/hello", (_, res) => {
 logger.info("Hello!");
 metricPrefix = "nodejs-azure-sidecar";
 // Send three unique metrics, just so we're testing more than one single metric
 metricsToSend = ["sample_metric_1", "sample_metric_2", "sample_metric_3"];
 metricsToSend.forEach((metric) => {
   for (let i = 0; i < 20; i++) {
     tracer.dogstatsd.distribution(`${metricPrefix}.${metric}`, 1);
   }
 });
 res.status(200).json({ msg: "Sending metrics to Datadog" });
});

const port = process.env.PORT || 8080;
app.listen(port);

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"
   "github.com/DataDog/dd-trace-go/v2/ddtrace"
   "github.com/DataDog/dd-trace-go/v2/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'));

?>