Setup Capture Configmap

1# Deploy the fixed Linux capture runner as a ConfigMap.
2# Exit codes: 0 = success/help, 1 = kubectl/read failure, 2 = usage/argument error.
3[CmdletBinding()]
4param(
5    [string]$Namespace = "default",
6    [switch]$Help
7)
8
9function Write-Usage {
10    @"
11Usage: setup-capture-configmap.ps1 [-Namespace <name>]
12
13Deploy run-capture.sh as the network-capture-scripts ConfigMap.
14"@
15}
16
17function Stop-Usage {
18    param([string]$Message)
19    [Console]::Error.WriteLine("Error: $Message")
20    [Console]::Error.WriteLine((Write-Usage))
21    exit 2
22}
23
24function Stop-Failure {
25    param([string]$Message)
26    [Console]::Error.WriteLine("Error: $Message")
27    exit 1
28}
29
30if ($Help) {
31    Write-Usage
32    exit 0
33}
34if ($Namespace.Length -gt 63 -or
35    $Namespace -cnotmatch "^[a-z0-9]([-a-z0-9]*[a-z0-9])?$") {
36    Stop-Usage "-Namespace must be an RFC 1123 label"
37}
38if (-not (Get-Command kubectl -ErrorAction SilentlyContinue)) {
39    Stop-Failure "kubectl is not installed or not on PATH"
40}
41
42$runnerPath = Join-Path $PSScriptRoot "run-capture.sh"
43if (-not (Test-Path -LiteralPath $runnerPath -PathType Leaf)) {
44    Stop-Failure "run-capture.sh is not readable"
45}
46
47$manifest = (& kubectl create configmap network-capture-scripts `
48    "--from-file=run-capture.sh=$runnerPath" `
49    "--namespace=$Namespace" --dry-run=client -o yaml 2>&1) -join "`n"
50if ($LASTEXITCODE -ne 0) {
51    Stop-Failure "failed to render the ConfigMap: $manifest"
52}
53
54$applyOutput = ($manifest | & kubectl apply -f - 2>&1) -join "`n"
55if ($LASTEXITCODE -ne 0) {
56    Stop-Failure "failed to apply the ConfigMap: $applyOutput"
57}
58
59Write-Output $applyOutput
60Write-Output "ConfigMap network-capture-scripts created or updated in namespace: $Namespace"