是否有任何 powershell 命令来计算日志文件中一行中的 id 数？

Question

is there any powershell command to count the number of ids in a line on log file? for example imagine this a line in log file -

2021-04-27 15:12:04.5797 INFO Generated Call Log IDs: 4219860,4219861,4219862,4219863,4219864,4219865,4219866,4219867,4219868,4219869,4219870,4219871,4219872,4219873,4219874,4219875,4219876,4219877,4219878,4219879,4219880,4219881,4219882,4219883.

I have to check the number of event log ids generated in the log for the particular log completion time in this case it is 15:12:04 cst.

Answer 1

$line ="2021-04-27 15:12:04.5797 INFO Generated Call Log IDs: 4219860,4219861,4219862,4219863,4219864,4219865,4219866,4219867,4219868,4219869,4219870,4219871,4219872,4219873,4219874,4219875,4219876,4219877,4219878,4219879,4219880,4219881,4219882,4219883."

(($line -split "IDs: ")[1] -split ","  | Measure-Object).Count

Answer 2

# data simulating log
$log = @'
2021-04-27 15:12:04.5797 INFO Generated Call Log IDs: 4219860,4219861,4219862,4219863,4219864,4219865,4219866,4219867,4219868,4219869,4219870,4219871,4219872,4219873,4219874,4219875,4219876,4219877,4219878,4219879,4219880,4219881,4219882,4219883.
2021-04-27 15:15:04.5797 INFO Generated Call Log IDs: 4219860,4219861,4219862,4219863,4219864,4219865,4219866,4219867,4219868,4219869,4219870,4219871,4219872.
'@ -split '\r?\n'

$log | ForEach-Object {
    # Regex with named capturing groups to get date and ids
    if ($_ -match '(?<date>^(?:\d+-?)+\s(?:\d+:?)+).*?IDs:\s?(?<ids>(?:\d+,?)+)\.?') {
        $ids = $Matches.ids -split ','

        # Create output objects with date, ids, and id count
        [pscustomobject]@{date = [datetime]::parse($Matches.date); count = $ids.Count; ids = $ids }        }
}

Output

date                count ids
----                ----- ---
2021-04-27 15:12:04    24 {4219860, 4219861, 4219862, 4219863…}
2021-04-27 15:15:04    13 {4219860, 4219861, 4219862, 4219863…}

Update

Based off your repost of this question it seems like you want something a bit more focused. Its sounds like you want to get count of IDs for a specific date/time string found in the log.

function Get-IdCountFromLog {
    [cmdletbinding()]
    param(
        [Parameter()]
        [ValidateScript( { Test-Path $_ })]
        [string]
        $Path,

        [Parameter()]
        [string]
        $DateStringPattern = '.*',

        # Use to return only count of IDs
        [Parameter()]
        [switch]
        $Count
    )

    Get-Content -Path $Path |
        Select-String -Pattern $DateStringPattern  |
        Select-Object -ExpandProperty Line |
        ForEach-Object {
            # Regex with named capturing groups to get date and ids
            if ($_ -match '(?<date>^(?:\d+-?)+\s(?:\d+:?)+\.\d+).*?IDs:\s?(?<ids>(?:\d+,?)+)\.?') {
                $ids = $Matches.ids -split ','

                if ($Count.IsPresent) { $ids.Count }
                else {
                    # Create output objects with date, ids, and id count
                    [pscustomobject]@{date = $Matches.date; count = $ids.Count; ids = $ids }
                }
            }
        }
}

Get-IdCountFromLog -Path C:\temp\log.txt -DateStringPattern '2021-06-01 04:51:54.3094' -Count

8