PowerShellでバッチファイル実行結果をログ出力・分析する方法

  Get-Help Get-Process

  Get-Process

  Set-Location C:\Scripts

  Get-Content .\example.txt

.\example.bat

Start-Process -FilePath "C:\Scripts\example.bat"

  Start-Process -FilePath "C:\Scripts\example.bat" -NoNewWindow

$output = & "C:\Scripts\example.bat"
Write-Output $output

  Get-ExecutionPolicy
  Set-ExecutionPolicy RemoteSigned

& "C:\Scripts\example.bat" | Out-File -FilePath "C:\Logs\output.log" -Encoding UTF8

& "C:\Scripts\example.bat" > "C:\Logs\output.log"

& "C:\Scripts\example.bat" *> "C:\Logs\output.log"

Start-Process -FilePath "C:\Scripts\example.bat" -RedirectStandardOutput "C:\Logs\output.log" -RedirectStandardError "C:\Logs\error.log"

Starting batch script...
Task 1 completed.
Task 2 failed with error code 1.
Batch script finished.

  if (-not (Test-Path "C:\Logs")) {
      New-Item -Path "C:\Logs" -ItemType Directory
  }

Timestamp,LogLevel,Message,Step
2025-01-17 14:30:00,INFO,Starting batch script,Initialization
2025-01-17 14:30:05,INFO,Task 1 completed,Step 1
2025-01-17 14:30:10,ERROR,Task 2 failed with error code 1,Step 2
2025-01-17 14:30:15,INFO,Batch script finished,Completion

# ログ出力用関数
function Write-Log {
    param (
        [string]$LogLevel,
        [string]$Message,
        [string]$Step
    )
    $timestamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
    $logEntry = "$timestamp,$LogLevel,$Message,$Step"
    Add-Content -Path "C:\Logs\structured_log.csv" -Value $logEntry
}

# ログ出力例
Write-Log -LogLevel "INFO" -Message "Starting batch script" -Step "Initialization"
Write-Log -LogLevel "INFO" -Message "Task 1 completed" -Step "Step 1"
Write-Log -LogLevel "ERROR" -Message "Task 2 failed with error code 1" -Step "Step 2"
Write-Log -LogLevel "INFO" -Message "Batch script finished" -Step "Completion"

{
    "Timestamp": "2025-01-17 14:30:00",
    "LogLevel": "INFO",
    "Message": "Starting batch script",
    "Step": "Initialization"
}

$logEntry = @{
    Timestamp = (Get-Date -Format "yyyy-MM-dd HH:mm:ss")
    LogLevel = "INFO"
    Message = "Starting batch script"
    Step = "Initialization"
}
$logEntry | ConvertTo-Json | Add-Content -Path "C:\Logs\structured_log.json"

# ログファイルの内容を読み込む
$logFile = "C:\Logs\structured_log.csv"
$logs = Get-Content $logFile

# CSVログファイルの読み込み
$logs = Import-Csv -Path "C:\Logs\structured_log.csv"

# 特定のログレベルをフィルタリング
$errorLogs = $logs | Where-Object { $_.LogLevel -eq "ERROR" }

# 結果を出力
$errorLogs

# 日時フィルタリングの例
$startTime = Get-Date "2025-01-17 14:00:00"
$endTime = Get-Date "2025-01-17 15:00:00"

$filteredLogs = $logs | Where-Object { 
    $timestamp = [datetime]::Parse($_.Timestamp)
    $timestamp -ge $startTime -and $timestamp -le $endTime
}

# 結果を出力
$filteredLogs

# ログレベルごとのカウント
$logSummary = $logs | Group-Object -Property LogLevel | Select-Object Name,Count

# 結果を表示
$logSummary

Name   Count
----   -----
INFO   5
ERROR  2

# ログレベルごとの集計
$logSummary = $logs | Group-Object -Property LogLevel | Select-Object Name,Count

# グラフ作成
$chart = New-Object System.Windows.Forms.DataVisualization.Charting.Chart
$chart.Series.Add("LogLevelDistribution") | Out-Null
$chart.Series["LogLevelDistribution"].ChartType = "Column"

foreach ($entry in $logSummary) {
    $chart.Series["LogLevelDistribution"].Points.AddXY($entry.Name, $entry.Count)
}

# グラフを表示（Windows環境用）
$chart.SaveImage("C:\Logs\log_chart.png", "Png")

# JSONログを読み込む
$jsonLogs = Get-Content "C:\Logs\structured_log.json" | ConvertFrom-Json

# エラーログを抽出
$errorLogs = $jsonLogs | Where-Object { $_.LogLevel -eq "ERROR" }

# 結果を出力
$errorLogs

# ログファイルの読み込み
$logs = Import-Csv -Path "C:\Logs\structured_log.csv"

# エラーエントリの抽出
$errorLogs = $logs | Where-Object { $_.LogLevel -eq "ERROR" }

# エラーが存在する場合の処理
if ($errorLogs.Count -gt 0) {
    Write-Output "エラーが検出されました。"
    $errorLogs | Format-Table -AutoSize
}

# 前回のチェック時刻を指定
$lastCheck = Get-Date "2025-01-17 14:00:00"

# 新規エラーを抽出
$newErrors = $logs | Where-Object {
    $_.LogLevel -eq "ERROR" -and ([datetime]::Parse($_.Timestamp) -gt $lastCheck)
}

# 新規エラーの通知
if ($newErrors.Count -gt 0) {
    Write-Output "新規エラーが検出されました。"
    $newErrors | Format-Table -AutoSize
}

# メール送信の設定
$smtpServer = "smtp.example.com"
$from = "alert@example.com"
$to = "admin@example.com"
$subject = "エラー通知"
$body = "以下のエラーが検出されました：" + "`n" + ($newErrors | Out-String)

# メール送信
Send-MailMessage -SmtpServer $smtpServer -From $from -To $to -Subject $subject -Body $body

# Windows通知を作成
[Windows.UI.Notifications.ToastNotificationManager, Windows.UI.Notifications, ContentType = WindowsRuntime] | Out-Null
$xml = @"
<toast>
  <visual>
    <binding template="ToastGeneric">
      <text>Error Alert</text>
      <text>新規エラーが検出されました。</text>
    </binding>
  </visual>
</toast>
"@

$xmlDoc = New-Object Windows.Data.Xml.Dom.XmlDocument
$xmlDoc.LoadXml($xml)
$toast = [Windows.UI.Notifications.ToastNotification]::new($xmlDoc)
[Windows.UI.Notifications.ToastNotificationManager]::CreateToastNotifier("PowerShell").Show($toast)

# ファイルシステム監視
$watcher = New-Object System.IO.FileSystemWatcher
$watcher.Path = "C:\Logs"
$watcher.Filter = "structured_log.csv"
$watcher.EnableRaisingEvents = $true

# エラーハンドラー
Register-ObjectEvent $watcher Changed -Action {
    $logs = Import-Csv -Path "C:\Logs\structured_log.csv"
    $newErrors = $logs | Where-Object { $_.LogLevel -eq "ERROR" }
    if ($newErrors.Count -gt 0) {
        Write-Output "エラーが検出されました。通知を送信します。"
        # 通知処理を追加（例: メールやシステム通知）
    }
}