const regex = new RegExp('(?P<time>\\d{4}-\\d{2}-\\d{2} \\d{2}:\\d{2}:\\d{2},\\d{0,3}) (?P<message>fail2ban.*(?P<gid>\\[\\d*\\]: )(?P<level>[A-Z]{4,7}) .*)', 'mg')
const str = `2020-05-11 06:25:02,732 fail2ban.server [879]: INFO rollover performed on /var/log/fail2ban.log
2020-05-08 01:34:33,079 fail2ban.filter [16566]: INFO [sshd] Found 1.1.1.1 - 2020-05-08 01:34:33
2020-05-09 04:02:31,316 fail2ban.actions [16566]: NOTICE [sshd] Ban 1.0.0.1
2020-05-23 00:09:06,355 fail2ban.server [9474]: INFO Reload jail GHOST
2020-05-23 00:09:06,355 fail2ban.filter [9474]: INFO Removed logfile: '/opt/logs/ghost/https___nonsense_fyi_production.log'
2020-05-23 00:09:07,902 fail2ban.actions [9474]: NOTICE [GHOST] Flush ticket(s) with iptables-multiport
2020-05-23 00:09:07,902 fail2ban.actions [9474]: NOTICE [GHOST] Flush ticket(s) with iptables-allports
2020-05-23 00:09:09,699 fail2ban.jail [9474]: INFO Jail 'GHOST' stopped
2020-05-23 00:09:09,701 fail2ban.jail [9474]: INFO Creating new jail 'GHOST'
2020-05-23 00:09:09,701 fail2ban.jail [9474]: INFO Jail 'GHOST' uses pyinotify {}
2020-05-23 00:09:09,706 fail2ban.jail [9474]: INFO Initiated 'pyinotify' backend
2020-05-23 00:09:09,709 fail2ban.filter [9474]: INFO Added logfile: '/opt/logs/ghost/https___nonsense_fyi_production.log' (pos = 14909, hash = 7091b34995f750999f6c605cd6250439a2e0cde7)
2020-05-23 00:09:09,710 fail2ban.filter [9474]: INFO encoding: UTF-8
2020-05-23 00:09:09,711 fail2ban.filter [9474]: INFO maxRetry: 5
2020-05-23 00:09:09,711 fail2ban.filter [9474]: INFO findtime: 300
2020-05-23 00:09:09,712 fail2ban.actions [9474]: INFO banTime: 2592000
2020-05-23 00:09:09,714 fail2ban.jail [9474]: INFO Jail 'GHOST' started
2020-05-23 00:09:09,714 fail2ban.server [9474]: INFO Reload finished.`;
// Reset `lastIndex` if this regex is defined globally
// regex.lastIndex = 0;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions