Powershell logging to lost network location: FileStream won't reconnect/flush - powershell

Question

I am working on a script logging solution for an install script that has many tasks and long processing times, and I am trying to address the issue of network dropout. I am also moving to a StreamWriter based approach vs my old Add-Content approach for performance reasons.
The problem I am having is that once the network drops out, the StreamWriter doesn't reconnect. So, first question is, CAN I reconnect, or is this a limitation of StreamWriter? The fact that the StreamWriter has a cache that can be Flushed makes me think I may be doing a bunch of work to recreate functionality that is already there.
And second, I am starting to think a simpler/better solution is simply to write the log to a local folder, so the log is always complete, then simply attempt to copy that to the network location for progress review. I had been thinking about implementing parallel logs, so a loss of the network would still leave the local copy complete. Curious if anyone else looks at this and says "Well, YEAH, dufus, obviously."
function Get-PxLogFile {
return $script:pxLogFile
}
function Set-PxLogFile {
param (
[string]$path
)
if (Test-Path $path) {
Remove-Item $path -force
}
[string]$script:pxLogFile= $path
}
function Get-PxLogWriter {
$logFile = Get-PxLogFile
if (-not $script:pxFileStream) {
$script:pxFileStream = New-Object io.fileStream $logFile, 'Append', 'Write', 'Read'
$script:pxlogWriter = New-Object io.streamWriter $script:pxFileStream
} elseif ($script:pxFileStream.name -ne $logFile) {
$script:pxFileStream = New-Object io.fileStream $logFile, 'Append', 'Write', 'Read'
$script:pxlogWriter = New-Object io.streamWriter $script:pxFileStream
}
return $script:pxlogWriter
}
function Dispose-PxLogFile {
$script:pxlogWriter.Dispose()
$script:pxFileStream.Dispose()
$script:pxFileStream = $null
$script:pxlogWriter = $null
}
# Shared
function Get-PxDeferredLog {
return ,$script:deferredLog # , keeps PS from unrolling a single item array into a string
}
function Set-PxDeferredLog {
param (
[collections.arrayList]$deferredLog
)
[collections.arrayList]$script:deferredLog = $deferredLog
}
function Get-PxDeferredLogTimes {
return ($script:deferredLogTimes -join ', ')
}
function Finalize-PxLogFile {
$logWriter = Get-PxLogWriter
if (($deferredLog = Get-PxDeferredLog).count -gt 0) {
$abandonTime = (Get-Date) + (New-TimeSpan -seconds:3)
$logWriter = Get-PxLogWriter
:lastChanceLogWindow do {
$deferredLog = Get-PxDeferredLog
:deferredItemsWrite do {
try {
$logWriter.WriteLine($deferredLog[0])
if ($deferredLog.count -gt 0) {
$deferredLog.RemoveAt(0)
} else {
break :lastChanceWindow
}
} catch {
break :deferredItemsWrite
}
} while ($deferredLog.count -gt 0)
Set-PxDeferredLog $deferredLog
if ($deferredLog.count -eq 0) {
break :lastChanceWindow
}
if ((Get-Date) -gt $abandonTime) {
break :lastChanceLogWindow
}
} while ((Get-Date) -lt $abandonTime)
if ($deferredLog) {
Write-Host "Failed to write all log entries"
}
}
$script:deferredLogItems = $script:deferredLogTimes = $null
}
function Add-PxLogFileContent {
param (
[string]$string
)
$logWriter = Get-PxLogWriter
# Nested Functions
function Add-PxDeferredLogItem {
param (
[string]$item
)
if (-not $script:deferredLog) {
[collections.arrayList]$script:deferredLog = New-Object collections.arrayList
}
if ($script:deferredLog.count -eq 0) {
Start-PxDeferredLogTime
}
[void]$script:deferredLog.Add($item)
}
function Start-PxDeferredLogTime {
if (-not $script:deferredLogTimes) {
[collections.arrayList]$script:deferredLogTimes = New-Object collections.arrayList
}
if ((-not $script:deferredLogTimes) -or (-not $script:deferredLogTimes[-1].EndsWith('-'))) {
[void]$script:deferredLogTimes.Add("$((Get-Date).ToString('T'))-")
}
}
function Stop-PxDeferredLogTime {
if ($script:deferredLogTimes[-1].EndsWith('-')) {
$script:deferredLogTimes[-1] = "$($script:deferredLogTimes[-1])$((Get-Date).ToString('T'))"
}
}
$deferredLogProcessed = $false
if ([collections.arrayList]$deferredLog = Get-PxDeferredLog) {
$deferredLogProcessed = $true
:deferredItemsWrite do {
try {
$logWriter.WriteLine($deferredLog[0])
$logWriter.Flush()
$deferredLog.RemoveAt(0)
} catch {
break :deferredItemsWrite
}
} while ($deferredLog.count -gt 0)
if ($deferredLog.count -eq 0) {
$deferredLogPending = $false
} else {
$deferredLogPending = $true
}
Set-PxDeferredLog $deferredLog
} else {
$deferredLogPending = $false
}
if (-not $deferredLogPending) {
try {
if ($logWriter.WriteLine($string)) {
$logWriter.Flush()
}
if ($deferredLogProcessed) {Stop-PxDeferredLogTime}
} catch {
Add-PxDeferredLogItem $string
Write-Host "Failed: $(Get-Date)`n$($_.Exception.Message)"
}
} else {
Add-PxDeferredLogItem $string
}
}
### MAIN
Clear-Host
$script:deferredLogItems = $script:deferredLogTimes = $null
$logPath = '\\px\Content'
Write-Host 'logTest1.txt'
$startTime = Get-Date
$endTime = $startTime + (New-TimeSpan -minutes:5)
#Set-PxLogFile "$([System.IO.Path]::GetFullPath($env:TEMP))\logTest1.txt"
Set-PxLogFile "$logPath\logTest1.txt"
do {
Add-PxLogFileContent "logged: $(Get-Date)"
Start-SLeep -s:10
} while ((Get-Date) -lt $endTime)
Finalize-PxLogFile
Write-Host 'logTest2.txt'
$startTime = Get-Date
$endTime = $startTime + (New-TimeSpan -minutes:5)
#Set-PxLogFile "$([System.IO.Path]::GetFullPath($env:TEMP))\logTest2.txt"
Set-PxLogFile "$logPath\logTest2.txt"
do {
Add-PxLogFileContent "logged: $(Get-Date)"
Start-SLeep -s:10
} while ((Get-Date) -lt $endTime)
if ([string]$deferredLogTimes = Get-PxDeferredLogTimes) {
Add-PxLogFileContent "Deferred logging time ranges: $deferredLogTimes"
}
Finalize-PxLogFile
Dispose-PxLogFile