const regex = /^(?<timestamp>[^ ]*)\.(?<time_microseconds>\d*)\+[^ ]+ (?<host>[^ ]*) postgres\[(?<pid>\d*)\]: \[(?<groupid>[^ ]\d*)-(?<lineid>[^ ]\d*)\](?<message>.*)$/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('^(?<timestamp>[^ ]*)\\.(?<time_microseconds>\\d*)\\+[^ ]+ (?<host>[^ ]*) postgres\\[(?<pid>\\d*)\\]: \\[(?<groupid>[^ ]\\d*)-(?<lineid>[^ ]\\d*)\\](?<message>.*)$', 'gm')
const str = `2017-03-21T03:01:32.627434+00:00 ec317 postgres[82271]: [134-1] 2017-03-21 03:01:32 UTC [82271]: [2-1] user=unknown db=[unknown] LOG: incomplete startup packet
2017-03-21T03:01:32.761669+00:00 ec317 postgres[82270]: [135-1] 2017-03-21 03:01:32 UTC [82270]: [3-1] user=gz_kettle,db=greenzone LOG: disconnection: session time: 0:00:00.182 user=gz_kettle database=greenzone host=172.26.27.22 port=35849
2017-03-21T03:01:32.800403+00:00 ec317 postgres[82272]: [133-1] 2017-03-21 03:01:32 UTC [82272]: [1-1] user=[unknown],db=[unknown] LOG: connection received: host=172.26.27.22 port=35850
2017-03-21T03:01:32.801596+00:00 ec317 postgres[82272]: [134-1] 2017-03-21 03:01:32 UTC [82272]: [2-1] user=gz_kettle,db=greenzone LOG: connection authorized: user=gz_kettle database=greenzone`;
// 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