add code for prometheus monitoring guide

Author: marcel-dempers

prometheus-monitoring/application/main.go

@@ -1,11 +1,33 @@
 version: "3"
 services:
-  my-application:
-    build: ./application
-    container_name: my-application
-    image: my-application
+  go-application:
+    build:
+      context: ./go-application
+    container_name: go-application
+    image: go-application
     ports:
       - "80:80"
+  python-application:
+    build:
+      context: ./python-application
+    container_name: python-application
+    image: python-application
+    ports:
+      - "81:80"
+  dotnet-application:
+    build:
+      context: ./dotnet-application
+    container_name: dotnet-application
+    image: dotnet-application
+    ports:
+      - "82:80"
+  nodejs-application:
+    build:
+      context: ./nodejs-application
+    container_name: nodejs-application
+    image: nodejs-application
+    ports:
+      - "83:80"
   prometheus:
     container_name: prometheus-svc
     image: prom/prometheus
@@ -21,4 +43,4 @@ services:
     environment:
       - GF_AUTH_BASIC_ENABLED=false
       - GF_AUTH_ANONYMOUS_ENABLED=true
-      - GF_AUTH_ANONYMOUS_ORG_ROLE=Admin
+      - GF_AUTH_ANONYMOUS_ORG_ROLE=Admin

prometheus-monitoring/docker-compose.yaml

@@ -0,0 +1,28 @@
+FROM mcr.microsoft.com/dotnet/core/sdk:2.2-stretch as debug
+
+#install debugger for NET Core
+RUN apt-get update
+RUN apt-get install -y unzip
+RUN curl -sSL https://aka.ms/getvsdbgsh | /bin/sh /dev/stdin -v latest -l ~/vsdbg
+
+RUN mkdir /work/
+WORKDIR /work/
+
+COPY ./src/work.csproj /work/work.csproj
+RUN dotnet restore
+
+COPY ./src/ /work/
+RUN mkdir /out/
+RUN dotnet publish --no-restore --output /out/ --configuration Release
+
+ENTRYPOINT ["dotnet", "run"]
+
+###########START NEW IMAGE###########################################
+
+FROM mcr.microsoft.com/dotnet/core/aspnet:2.2-stretch-slim as prod
+
+RUN mkdir /app/
+WORKDIR /app/
+COPY --from=debug /out/ /app/
+RUN chmod +x /app/ 
+CMD dotnet work.dll

prometheus-monitoring/dotnet-application/dockerfile

@@ -0,0 +1,26 @@
+@page
+@model ErrorModel
+@{
+    ViewData["Title"] = "Error";
+}
+
+<h1 class="text-danger">Error.</h1>
+<h2 class="text-danger">An error occurred while processing your request.</h2>
+
+@if (Model.ShowRequestId)
+{
+    <p>
+        <strong>Request ID:</strong> <code>@Model.RequestId</code>
+    </p>
+}
+
+<h3>Development Mode</h3>
+<p>
+    Swapping to the <strong>Development</strong> environment displays detailed information about the error that occurred.
+</p>
+<p>
+    <strong>The Development environment shouldn't be enabled for deployed applications.</strong>
+    It can result in displaying sensitive information from exceptions to end users.
+    For local debugging, enable the <strong>Development</strong> environment by setting the <strong>ASPNETCORE_ENVIRONMENT</strong> environment variable to <strong>Development</strong>
+    and restarting the app.
+</p>

prometheus-monitoring/dotnet-application/src/Pages/Error.cshtml

@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+
+namespace work.Pages
+{
+    [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
+    public class ErrorModel : PageModel
+    {
+        public string RequestId { get; set; }
+
+        public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
+
+        public void OnGet()
+        {
+            RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier;
+        }
+    }
+}

prometheus-monitoring/dotnet-application/src/Pages/Error.cshtml.cs

@@ -0,0 +1,10 @@
+@page
+@model IndexModel
+@{
+    ViewData["Title"] = "Home page";
+}
+
+<div class="text-center">
+    <h1 class="display-4">Welcome</h1>
+    <p>Learn about <a href="https://docs.microsoft.com/aspnet/core">building Web apps with ASP.NET Core</a>.</p>
+</div>

prometheus-monitoring/dotnet-application/src/Pages/Index.cshtml

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+
+namespace work.Pages
+{
+    public class IndexModel : PageModel
+    {
+        public void OnGet()
+        {
+
+        }
+    }
+}

prometheus-monitoring/dotnet-application/src/Pages/Index.cshtml.cs

@@ -0,0 +1,8 @@
+@page
+@model PrivacyModel
+@{
+    ViewData["Title"] = "Privacy Policy";
+}
+<h1>@ViewData["Title"]</h1>
+
+<p>Use this page to detail your site's privacy policy.</p>

prometheus-monitoring/dotnet-application/src/Pages/Privacy.cshtml

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+
+namespace work.Pages
+{
+    public class PrivacyModel : PageModel
+    {
+        public void OnGet()
+        {
+        }
+    }
+}

prometheus-monitoring/dotnet-application/src/Pages/Privacy.cshtml.cs

@@ -0,0 +1,25 @@
+@using Microsoft.AspNetCore.Http.Features
+
+@{
+    var consentFeature = Context.Features.Get<ITrackingConsentFeature>();
+    var showBanner = !consentFeature?.CanTrack ?? false;
+    var cookieString = consentFeature?.CreateConsentCookie();
+}
+
+@if (showBanner)
+{
+    <div id="cookieConsent" class="alert alert-info alert-dismissible fade show" role="alert">
+        Use this space to summarize your privacy and cookie use policy. <a asp-page="/Privacy">Learn More</a>.
+        <button type="button" class="accept-policy close" data-dismiss="alert" aria-label="Close" data-cookie-string="@cookieString">
+            <span aria-hidden="true">Accept</span>
+        </button>
+    </div>
+    <script>
+        (function () {
+            var button = document.querySelector("#cookieConsent button[data-cookie-string]");
+            button.addEventListener("click", function (event) {
+                document.cookie = button.dataset.cookieString;
+            }, false);
+        })();
+    </script>
+}