C:\Users\NisimHurst\NDS\scripts\cmds\pod_logs.ps1

pod_logs.ps1

# read parameters from the command line
param(
    [string]$namespace = "default",
    [string]$pattern = "",
    [bool]$previous = $false
)

# check if pattern has a space and if so, split it in two and use the first part
$container = ""
if ($pattern.Contains(" ")) {
    $container = $pattern.Split(" ")[1]
    $pattern = $pattern.Split(" ")[0]
    write-host "Pattern: $pattern"
    write-host "Container: $container"
}
$pattern = ".*$pattern.*"

# Define the namespace and the regular expression pattern to match pod names

# Get the list of pod names in the specified namespace
$params = "--no-headers"
if ($namespace -ne "default") {
    $params += " -n $namespace"
}
write-host "Fetching pods"
$pods_ = Invoke-Expression $("kubectl get pods " + $params)
$pods = $pods_ | ForEach-Object {
    $podName = $_.Split(" ")[0]
    if ($podName -match $pattern) {
        return $podName
    }
}

# Check if any pods matched the pattern
if ($pods) {
    # Retrieve logs from the matched pods
    foreach ($pod in $pods) {
        Write-Host "Fetching logs for pod: $pod"
        $params = "logs --tail=20"
        if($previous) {
            $params += " --previous"
        }
        if($namespace -ne "default") {
            $params += " -n $namespace"
        }
        $params += " $pod"
        if ($container) {
            # split by space and get all the container names
            $containers_ = Invoke-Expression $("kubectl get pod " + $pod + $namespace_param + " -o jsonpath='{range .spec.containers[*]}{.name}{\""\n\""}{end}'")
            # split by space and get all the container names
            $newContainer = $containers_ | ForEach-Object {
                $containerName = $_
                # write-host "Container: $containerName"
                if ($containerName -match ".*" + $container + ".*") {
                    return $containerName
                }
            }
            $params += " -c $newContainer"
        }
        Write-Host "kubectl $params"
        start-process -NoNewWindow -Wait -FilePath kubectl -ArgumentList $params
    }
} else {
    Write-Host "No pods found matching the pattern '$pattern' in namespace '$namespace'."
}