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@goshawking

Pythonでshow interface情報をxlsx出力してみた

Last updated at Posted at 2019-10-13

はじめに

Cisco機器のshow interfaceを定期的に採取して調査する必要があったので、
Pythonで試行錯誤してみたアウトプットです。

目的

show interfaceを定期的に出力したテキストファイルから
各種カウンターを取り出して表形式で出力する。
showコマンド採取時のclockも一緒に取得したい。

Pythonスクリプトの作成

メイン処理

main.py

# !/usr/bin/env python

if __name__ == '__main__': # スクリプトを直接実行時は__name__に__main__が自動で入る

    os.chdir(os.path.dirname(os.path.abspath(__file__))) #カレントを実行ファイルのフォルダに移動
    hdr_list = ['Time' , 'CPU(5sec)' , 'Port' , 'In-Traffic(bps)'  , 'Out-Traffic(bps)' , 'In-Packets' , 'Out-Packets' , 'Out-Drop' ,
                'In Error' , 'CRC(In)' , 'Frame(In)' , 'Over(In)' , 'Ignor(In)' ,
                'Out Error' , 'Collisions(Out)' , 'IF-Reset(Out)' , '']
    counter_list = ['-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-']
    rows_txt = ''

    file_paths = files_select()
    try:
        for file_path in file_paths:
            with open(file_path , 'r') as f:
                show_flag = False # show intを見つけた時True
                port_flag = False # Port情報を収集するときTrue
                row_count = 1
                file_name = os.path.basename(file_path)
        
                # 1行づつ読込
                for line in f:
                    # show intを見つけたらホスト名をピックアップ 
                    if ( re.match(r'(\S+)#sho?w? (int|interfaces?)$' , line) ):
                        hostname = re.match(r'(\S+)#sho?w? (int|interfaces?)$' , line)
                        h_name = hostname.group(1)

                        show_flag = True
                        # show intを見つけたらxlsxファイルを作成
                        if ( row_count == 1 ):
                            xlsx_temp_create(file_name)
                            wb = OPP.load_workbook('{0}.xlsx'.format(file_name))
                            sheet = wb['show interface']
                            continue

                    elif ( show_flag and re.search(r'Load for five secs: (\S+)\/(\S+);' , line) ):
                        cpu = re.search(r'Load for five secs: (\S+)\/(\S+);' , line)
                        cpu5sec = '{0}/{1}'.format(cpu.group(1) , cpu.group(2))
                        continue

                    elif ( show_flag and re.search(r'Time source is NTP, (\S+) ' , line) ):
                        ntp = re.search(r'Time source is NTP, (\S+) ' , line)
                        continue

                    elif ( show_flag and re.match(r'(\S+) is ' , line) ):

                        # 1ポート目
                        if ( row_count == 1 ):
                            interface = re.match(r'(\S+) is ' , line)
                            port_flag = True
                            row_count += 1
                            counter_list[0] = ntp.group(1)
                            counter_list[1] = cpu5sec
                            counter_list[2] = interface.group(1)
                            continue

                        # 2ポート目以降
                        else:
                            counter_list.append('')
                            # ワークシート、データのリスト、入力行数
                            xlsx_write(sheet , counter_list , row_count)

                            # 初期化して再度カウント
                            counter_list = ['-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-']
                            interface = re.match(r'(\S+) is ' , line)
                            port_flag = True
                            row_count += 1
                            counter_list[0] = ntp.group(1)
                            counter_list[1] = cpu5sec
                            counter_list[2] = interface.group(1)
                            continue

                    elif ( port_flag and re.search(r'5 minute input rate (\S+) bits/sec, (\S+) packets/sec' , line) ):
                        in_count = re.search(r'5 minute input rate (\S+) bits/sec, (\S+) packets/sec' , line)
                        counter_list[3] = in_count.group(1)
                        continue
                
                    elif ( port_flag and re.search(r'5 minute output rate (\S+) bits/sec, (\S+) packets/sec' , line) ):
                        out_count = re.search(r'5 minute output rate (\S+) bits/sec, (\S+) packets/sec' , line)
                        counter_list[4] = out_count.group(1)
                        continue

                    elif ( port_flag and re.search(r' (\S+) packets input, (\S+) bytes' , line) ):
                        in_total = re.search(r' (\S+) packets input, (\S+) bytes' , line)
                        counter_list[5] = in_total.group(1)
                        continue
    
                    elif ( port_flag and re.search(r' (\S+) packets output, (\S+) bytes' , line) ):
                        out_total = re.search(r' (\S+) packets output, (\S+) bytes' , line)
                        counter_list[6] = out_total.group(1)
                        continue

                    elif ( port_flag and re.search(r'Total output drops: (\S+)' , line) ):
                        out_drop = re.search(r'Total output drops: (\S+)' , line)
                        counter_list[7] = out_drop.group(1)
                        continue

                    elif ( port_flag and re.search(r' (\S+) input errors, (\S+) CRC, (\S+) frame, (\S+) overrun, (\S+) ignored' , line) ):
                        in_errors = re.search(r' (\S+) input errors, (\S+) CRC, (\S+) frame, (\S+) overrun, (\S+) ignored' , line)
                        counter_list[8]  = in_errors.group(1)
                        counter_list[9]  = in_errors.group(2)
                        counter_list[10]  = in_errors.group(3)
                        counter_list[11]  = in_errors.group(4) # 処理能力超過によりバッファに送れなかったパケット
                        counter_list[12] = in_errors.group(5) # バッファ不足による破棄
                        continue

                    elif ( port_flag and re.search(r' (\S+) output errors, (\S+) interface resets' , line) ):
                        out_errors_svi = re.search(r' (\S+) output errors, (\S+) interface resets' , line)
                        counter_list[13] = out_errors_svi.group(1)
                        counter_list[15] = out_errors_svi.group(2)
                        continue

                    elif ( port_flag and re.search(r' (\S+) output errors, (\S+) collisions, (\S+) interface resets' , line) ):
                        out_errors = re.search(r' (\S+) output errors, (\S+) collisions, (\S+) interface resets' , line)
                        counter_list[13] = out_errors.group(1)
                        counter_list[14] = out_errors.group(2)
                        counter_list[15] = out_errors.group(3)
                        continue

                    elif ( show_flag and re.match(r'(\S+)#' , line) ):

                        #最終行の書き込み後フラグクリア
                        counter_list.append('')
                        # ワークシート、データのリスト、入力行数
                        xlsx_write(sheet , counter_list , row_count)
                        counter_list = ['-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-' , '-']
                
                        show_flag = False
                        port_flag = False
                        continue
                
                    else:
                        pass

            # 保存
            wb.save('{0}.xlsx'.format(file_name))
            rows_txt += '{0}の出力行は{1}\n'.format(h_name , row_count - 1 )

    except FileNotFoundError:
        sys.exit()

    TKM.showinfo('パース終了' , rows_txt)

ファイルのパスを取得

files_select.py
def files_select():
    try:
        fTyp = [('' , '.txt') , ('' , '.log')]
        current = os.path.abspath(os.path.dirname(__file__))
    
        TKM.showinfo('ログ選択' , 'show interfaceのログファイルを選択')

        file_path = TKF.askopenfilenames(filetypes = fTyp , initialdir = current) # 複数時はaskopenfilenames
        file_paths = list(file_path)

        return file_paths

    except FileNotFoundError:
        pass

xlsxへの書き込み

xlsx_temp_create.py
# xlsxのテンプレート作成
def xlsx_temp_create(file_name):
    
    wb = OPP.Workbook()
    wb.create_sheet(index = 0 , title = 'show interface')
    sheet = wb['show interface']

    # 網掛け指定
    blue = PatternFill(patternType = 'solid' ,
                fgColor='0066FF' ,
                bgColor='0066FF')
   
    for col_ptn in ['A' , 'B' , 'C' , 'D' , 'E' , 'F' , 'G' , 'H' , 'I' ,
                    'J' , 'K' , 'L' , 'M' , 'N' , 'O' , 'P']:
        sheet.column_dimensions[col_ptn].width = 16 # セル幅
        sheet[col_ptn + '1'].fill = blue            # 網掛け
        sheet.freeze_panes = 'A2'                   # セル固定

    # ワークシート、データのリスト、入力行数
    xlsx_write(sheet , hdr_list , 1)

    # 保存
    save = True

    while ( save == True ):
        try:
            wb.save('{0}.xlsx'.format(file_name))
            save = False
    
        except PermissionError:
            TKM.showinfo('Error' , 'xlsxファイルを閉じてください')
xlsx_write.py
# xlsx書込み
def xlsx_write(sheet , col_list , r):
    font = Font(name = 'メイリオ' ,
                size = 9 ,
                bold = False ,
                italic = False ,
                underline = 'none',
                strike = False,
                color = 'FF000000')

    for col in range(1 , len(col_list)): # 1から入力カラム値まで記載
        c = col - 1                      # リストインデックスは-1する(0開始)
        sheet.cell(row = r , column = col).value = col_list[c] # 行row_count 列1からcol_maxまで
        sheet.cell(row = r , column = col).font = font         # フォント合わせ
xlsx_temp_create.py
# xlsx書込み
def xlsx_write(sheet , col_list , r):
    font = Font(name = 'メイリオ' ,
                size = 9 ,
                bold = False ,
                italic = False ,
                underline = 'none',
                strike = False,
                color = 'FF000000')

    for col in range(1 , len(col_list)): # 1から入力カラム値まで記載
        c = col - 1                      # リストインデックスは-1する(0開始)
        sheet.cell(row = r , column = col).value = col_list[c] # 行row_count 列1からcol_maxまで
        sheet.cell(row = r , column = col).font = font         # フォント合わせ

~~~

# 更新履歴
2020/3/5
matchからsearchに変更、複数ファイルを選択できるように変更
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