Add msi builder (#19)

Add msi builder. Installer is built and uploaded to Github as a release when master is tagged with a version string

installer/.gitignore

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+Work/*
+Output/*
+WiX/*
+Source/*

installer/build.ps1

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+[CmdletBinding()]
+Param (
+  [Parameter(Mandatory=$true)]
+  [String] $PathToExecutable,
+  [Parameter(Mandatory=$true)]
+  [String] $Version,
+  [Parameter(Mandatory=$false)]
+  [ValidateSet("amd64","386")]
+  [String] $Arch = "amd64"
+)
+$ErrorActionPreference = "Stop"
+
+# Get absolute path to executable before switching directories
+$PathToExecutable = Resolve-Path $PathToExecutable
+# Set working dir to this directory, reset previous on exit
+Push-Location $PSScriptRoot
+Trap {
+  # Reset working dir on error
+  Pop-Location
+}
+
+if ($PSVersionTable.PSVersion.Major -lt 5) {
+  Write-Error "Powershell version 5 required"
+  exit 1
+}
+
+$wc = New-Object System.Net.WebClient
+function Get-FileIfNotExists {
+  Param (
+    $Url,
+    $Destination
+  )
+  if(-not (Test-Path $Destination)) {
+    Write-Verbose "Downloading $Url"
+    $wc.DownloadFile($Url, $Destination)
+  }
+  else {
+    Write-Verbose "${Destination} already exists. Skipping."
+  }
+}
+
+$sourceDir = mkdir -Force Source
+mkdir -Force Work,Output | Out-Null
+
+Write-Verbose "Downloading files"
+# Somewhat obscure url, points to WiX 3.10 binary release
+Write-Verbose "Downloading WiX..."
+Get-FileIfNotExists "http://download-codeplex.sec.s-msft.com/Download/Release?ProjectName=wix&DownloadId=1504735&FileTime=130906491728530000&Build=21031" "$sourceDir\wix-binaries.zip"
+mkdir -Force WiX | Out-Null
+Expand-Archive -Path "${sourceDir}\wix-binaries.zip" -DestinationPath WiX -Force
+
+Copy-Item -Force $PathToExecutable Work/wmi_exporter.exe
+
+Write-Verbose "Creating wmi_exporter-${Version}-${Arch}.msi"
+$wixArch = @{"amd64"="x64"; "386"="x86"}[$Arch]
+$wixOpts = "-ext WixFirewallExtension"
+Invoke-Expression "WiX\candle.exe -nologo -arch $wixArch $wixOpts -out Work\wmi_exporter.wixobj -dVersion=`"$Version`" wmi_exporter.wxs"
+Invoke-Expression "WiX\light.exe -nologo -spdb $wixOpts -out `"Output\wmi_exporter-${Version}-${Arch}.msi`" Work\wmi_exporter.wixobj"
+
+Write-Verbose "Done!"
+Pop-Location

installer/wmi_exporter.wxs

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+<?xml version="1.0" encoding="utf-8"?>
+<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi"
+     xmlns:fw="http://schemas.microsoft.com/wix/FirewallExtension">
+  <?if $(sys.BUILDARCH)=x64 ?>
+    <?define PlatformProgramFiles = "ProgramFiles64Folder" ?>
+  <?else ?>
+    <?define PlatformProgramFiles = "ProgramFilesFolder" ?>
+  <?endif ?>
+
+  <Product Id="*" UpgradeCode="66a6eb5b-1fc2-4b14-a362-5ceec6413308" 
+           Name="WMI Exporter" Version="$(var.Version)" Manufacturer="Martin Lindhe" 
+           Language="1033" Codepage="1252">
+    <Package Id="*" Manufacturer="Martin Lindhe" InstallScope="perMachine" 
+             Description="WMI Exporter $(var.Version) installer" Compressed="yes" />
+    <Media Id="1" Cabinet="wmi_exporter.cab" EmbedCab="yes"/>
+    <MajorUpgrade Schedule="afterInstallExecute" DowngradeErrorMessage="A later version of [ProductName] is already installed. Setup will now exit." />
+
+    <Property Id="ENABLED_COLLECTORS" Secure="yes"/>
+    <SetProperty Id="CollectorsFlag" After="InstallFiles" Sequence="execute" Value="-collectors.enabled [ENABLED_COLLECTORS]">ENABLED_COLLECTORS</SetProperty>
+
+    <Property Id="LISTEN_ADDR" Secure="yes" />
+    <Property Id="LISTEN_PORT" Secure="yes" Value="9182" />
+    <SetProperty Id="ListenFlag" After="InstallFiles" Sequence="execute" Value="-telemetry.addr [LISTEN_ADDR]:[LISTEN_PORT]">LISTEN_ADDR OR LISTEN_PORT</SetProperty>
+
+    <Property Id="METRICS_PATH" Secure="yes"/>
+    <SetProperty Id="MetricsPathFlag" After="InstallFiles" Sequence="execute" Value="-telemetry.path [METRICS_PATH]">METRICS_PATH</SetProperty>
+
+    <Directory Id="TARGETDIR" Name="SourceDir">
+      <Directory Id="$(var.PlatformProgramFiles)">
+        <Directory Id="APPLICATIONROOTDIRECTORY" Name="wmi_exporter" />
+      </Directory>
+    </Directory>
+
+    <ComponentGroup Id="Files" Directory="APPLICATIONROOTDIRECTORY">
+      <Component>
+        <File Id="wmi_exporter.exe" Name="wmi_exporter.exe" Source="Work\wmi_exporter.exe" KeyPath="yes">
+          <fw:FirewallException Id="MetricsEndpoint" Name="WMI Exporter (HTTP [LISTEN_PORT])" Description="WMI Exporter HTTP endpoint" Port="[LISTEN_PORT]" Protocol="tcp" Scope="any" />
+        </File>
+        <ServiceInstall Id="InstallExporterService" Name="wmi_exporter" ErrorControl="normal" Start="auto" Type="ownProcess" Arguments="-log.format logger:eventlog?name=wmi_exporter [CollectorsFlag] [ListenFlag] [MetricsPathFlag]" />
+        <ServiceControl Id="ServiceStateControl" Name="wmi_exporter" Remove="uninstall" Start="install" Stop="both" />
+      </Component>
+    </ComponentGroup>
+
+    <Feature Id="DefaultFeature" Level="1">
+      <ComponentGroupRef Id="Files" />
+    </Feature>
+  </Product>
+</Wix>