powershellで使う Logger class

powershellで使うログクラスの記録

class Logger {
    #-------------------------------------------------------------------------------------
    # ［仕様］
    # ・ログファイルは、日付で保持する。
    # ・ログファイルは、指定ファイル数保持する。超えた場合、超えた分は削除する。
    # ・ログフォーマット：yyyy/MM/dd HH:mm:SS [log-type] [message]
    #-------------------------------------------------------------------------------------

    # variable
    [string] $log_file_dir;
    [string] $log_file_name;
    [string] $log_file_path;
    [int]    $log_file_keep_count;


    # constructor
    Logger([string]$path){
        $this.log_file_dir        = $path;
        $this.log_file_name       = "Log_" + (Get-Date).ToString("yyyyMMdd") + ".log";
        $this.log_file_path       = $this.log_file_dir + "/" + $this.log_file_name;
        $this.log_file_keep_count = 14;
        $this.OldestLogFileRemove();

    }
    Logger([string]$path, [int]$keep_count){
        $this.log_file_dir        = $path;
        $this.log_file_name       = "Log_" + (Get-Date).ToString("yyyyMMdd") + ".log";
        $this.log_file_path       = $this.log_file_dir + "/" + $this.log_file_name;
        $this.log_file_keep_count = $keep_count;
        $this.OldestLogFileRemove();
    }

    
    # method
    [void] OldestLogFileRemove(){
        $file_count = (Get-ChildItem $this.log_file_dir -File).Count;
        if ( $file_count -gt $this.log_file_keep_count ) {
            $oldestFile = Get-ChildItem $this.log_file_dir  | Sort-Object LastWriteTime | Select-Object -First 1;
            Remove-Item $oldestFile.FullName -Force;
            $this.Info("Remove: " +  $oldestFile.FullName);
        }
    }

    [int] WriteLog([string]$log_type,[string]$content){ 
        $text = (Get-Date).ToString("yyyy/MM/dd HH:mm:ss") + " [" + $log_type + "] " + $content;
        # 書き出し
        Write-Output $text | Out-File -FilePath $this.log_file_path -Encoding utf8 -Append;
        return 0;
    }
    [void] Info([string]$message) {
        $this.WriteLog("Info ", $message);
    }
    [void] Error([string]$message) { 
        $this.WriteLog("Error", $message);
    }
    [void] Debug([string]$message) { 
        $this.WriteLog("Debug", $message);
    }

}


$log = New-Object Logger("D:\PowerShell-Script\TEST-FOLDER\LOG");

$log.Info("情報ログ");
$log.Error("エラーログ");
$log.Debug("デバッグログ");