From 78b07575278b8e7dff7e105db1cc7a4a1b0f4d3c Mon Sep 17 00:00:00 2001
From: Chris Kaczor <chris@kaczorzoo.net>
Date: Tue, 15 Jun 2021 15:24:59 -0400
Subject: [PATCH] Add telemetry to power service

---
 Power/Service/PowerReader.cs          | 10 ++++++++--
 Power/Service/Service.csproj          |  2 ++
 Power/Service/Startup.cs              |  5 +++++
 Power/Service/TelemetryInitializer.cs | 14 ++++++++++++++
 Power/Service/deploy/manifest.yaml    |  5 +++++
 5 files changed, 34 insertions(+), 2 deletions(-)
 create mode 100644 Power/Service/TelemetryInitializer.cs

diff --git a/Power/Service/PowerReader.cs b/Power/Service/PowerReader.cs
index f618591..59dc3a3 100644
--- a/Power/Service/PowerReader.cs
+++ b/Power/Service/PowerReader.cs
@@ -1,12 +1,12 @@
 using ChrisKaczor.HomeMonitor.Power.Service.Data;
 using ChrisKaczor.HomeMonitor.Power.Service.Models;
 using JetBrains.Annotations;
+using Microsoft.ApplicationInsights;
 using Microsoft.AspNetCore.SignalR.Client;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Hosting;
 using RestSharp;
 using System;
-using System.Linq;
 using System.Text.Json;
 using System.Threading;
 using System.Threading.Tasks;
@@ -18,18 +18,22 @@ namespace ChrisKaczor.HomeMonitor.Power.Service
     {
         private readonly IConfiguration _configuration;
         private readonly Database _database;
+        private readonly TelemetryClient _telemetryClient;
 
         private HubConnection _hubConnection;
         private Timer _readTimer;
 
-        public PowerReader(IConfiguration configuration, Database database)
+        public PowerReader(IConfiguration configuration, Database database, TelemetryClient telemetryClient)
         {
             _configuration = configuration;
             _database = database;
+            _telemetryClient = telemetryClient;
         }
 
         public Task StartAsync(CancellationToken cancellationToken)
         {
+            _telemetryClient.TrackTrace($"{nameof(PowerReader)} - Start");
+
             _readTimer = new Timer(OnTimer, null, TimeSpan.Zero, TimeSpan.FromSeconds(1));
 
             if (!string.IsNullOrEmpty(_configuration["Hub:Power"]))
@@ -81,6 +85,8 @@ namespace ChrisKaczor.HomeMonitor.Power.Service
 
         public Task StopAsync(CancellationToken cancellationToken)
         {
+            _telemetryClient.TrackTrace($"{nameof(PowerReader)} - Stop");
+
             _readTimer.Dispose();
 
             _hubConnection?.StopAsync(cancellationToken).Wait(cancellationToken);
diff --git a/Power/Service/Service.csproj b/Power/Service/Service.csproj
index 75c9f60..0197698 100644
--- a/Power/Service/Service.csproj
+++ b/Power/Service/Service.csproj
@@ -26,6 +26,8 @@
   <ItemGroup>
     <PackageReference Include="Dapper" Version="2.0.90" />
     <PackageReference Include="JetBrains.Annotations" Version="2021.1.0" />
+    <PackageReference Include="Microsoft.ApplicationInsights" Version="2.17.0" />
+    <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.17.0" />
     <PackageReference Include="Microsoft.AspNetCore.SignalR.Client" Version="5.0.6" />
     <PackageReference Include="Microsoft.Data.SqlClient" Version="2.1.3" />
     <PackageReference Include="RestSharp" Version="106.11.7" />
diff --git a/Power/Service/Startup.cs b/Power/Service/Startup.cs
index 1533359..1391e82 100644
--- a/Power/Service/Startup.cs
+++ b/Power/Service/Startup.cs
@@ -1,4 +1,5 @@
 using ChrisKaczor.HomeMonitor.Power.Service.Data;
+using Microsoft.ApplicationInsights.Extensibility;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.Mvc;
@@ -13,6 +14,10 @@ namespace ChrisKaczor.HomeMonitor.Power.Service
     {
         public void ConfigureServices(IServiceCollection services)
         {
+            services.AddSingleton<ITelemetryInitializer, TelemetryInitializer>();
+
+            services.AddApplicationInsightsTelemetry();
+
             services.AddTransient<Database>();
 
             services.AddHostedService<PowerReader>();
diff --git a/Power/Service/TelemetryInitializer.cs b/Power/Service/TelemetryInitializer.cs
new file mode 100644
index 0000000..157be8a
--- /dev/null
+++ b/Power/Service/TelemetryInitializer.cs
@@ -0,0 +1,14 @@
+using Microsoft.ApplicationInsights.Channel;
+using Microsoft.ApplicationInsights.Extensibility;
+using System.Reflection;
+
+namespace ChrisKaczor.HomeMonitor.Power.Service
+{
+    public class TelemetryInitializer : ITelemetryInitializer
+    {
+        public void Initialize(ITelemetry telemetry)
+        {
+            telemetry.Context.Cloud.RoleName = Assembly.GetEntryAssembly()?.GetName().Name;
+        }
+    }
+}
diff --git a/Power/Service/deploy/manifest.yaml b/Power/Service/deploy/manifest.yaml
index bd8f2ca..493ff3b 100644
--- a/Power/Service/deploy/manifest.yaml
+++ b/Power/Service/deploy/manifest.yaml
@@ -94,6 +94,11 @@ spec:
         securityContext:
           privileged: true
         env:
+        - name: ApplicationInsights__InstrumentationKey
+          valueFrom:
+            secretKeyRef:
+              name: telemetry
+              key: key
         - name: Power__Database__Host
           value: power-database
         - name: Power__Database__User