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watch-vox - in powershell...
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09-18-2019 04:06 PM - edited 09-19-2019 03:12 AM
I'm ever so sorry :\ but I couldn't stop myself :p
...if you want to run it, then :
1) save the code somewhere as "watch-vox.ps1"
2) run it using :
powershell -file watch-vox.ps1
...anyway, here's the script :
#############################################################################################################
# File: watch-vox.ps1
# Purpose: Script to watch VOX forum(s) for updates.
#
# Vers Date Who Description
# ---- ---- --- -----------
# v0.01 12-Jan-2017 sdo Initial draft.
# v0.02 12-Jan-2017 sdo Only log when something has changed.
# v0.03 12-Jan-2017 sdo Log every 100 iterations.
# v0.04 13-Jan-2017 sdo Append the diff to the log. Diff -y and suppress.
# v0.05 13-Jan-2017 sdo Place all temporary working files in script path.
# v0.06 14-Jan-2017 sdo Check status of curl web page fetch.
# v0.07 15-Jan-2017 sdo Only move file if curl web page fetch is successful.
# v0.08 21-Jan-2017 sdo Test status of initial search to handle successful page fetch which is empty.
# v0.09 21-Jan-2017 sdo More capture of stderr to the log file.
# v0.10 21-Jan-2017 sdo Store the data files in a sub-folder.
# v0.11 21-Jan-2017 sdo Test size of page/file retrieved by curl.
# v0.12 22-Jan-2017 sdo Also able to monitor the Article and Downloads by searching for match3.
# v0.13 16-Sep-2019 sdo Convert from bash to PowerShell, and so some comments above are now irrelevant.
# v0.14 19-Sep-2019 sdo Match "*p*ge-link*" to also pull out names of contributors to topics.
# v0.15 19-Sep-2019 sdo Remove last five entries in the topics list, which are top kudo'ed names.
# v0.16 19-Sep-2019 sdo Check for minimum of 40 topic entries.
# v0.17 19-Sep-2019 sdo Added more detail to comments are core of functionality.
#############################################################################################################
$myScriptVersion = "v0.17"
$ErrorActionPreference = "Stop"
$Debug = $False
#############################################################################################################
# Script functions...
#
Function dt {
[System.DateTime]::Now.ToString( "yyyy-MM-dd HH:mm:ss" )
}
Function Log( $myText ) {
If ( $Null -eq $myText ) {
Write-Host "$(dt)"
} Else {
Write-Host "$(dt) $myText"
}
If ( $myScriptLog -ne "" ) {
If ( $Null -eq $myText ) {
Add-Content -Path $myScriptLog -Value "$(dt)" -Force
} Else {
Add-Content -Path $myScriptLog -Value "$(dt) $myText" -Force
}
}
}
Function Abort( $myText ) {
Log $myText
Log "script aborting..."
Exit 1
}
#############################################################################################################
# Where am I ? Who am I ?
#
$myScriptSpec = [System.IO.FileInfo]$PSCommandPath
$myScriptPath = $myScriptSpec.Directory
$myScriptName = $myScriptSpec.BaseName
$myScriptLog = Join-Path -Path $myScriptPath -ChildPath "$myScriptName.log"
$myScriptStart = Get-Date
If ( Test-Path -Path $myScriptLog -PathType Leaf ) { Remove-Item -Path $myScriptLog -Force }
$myUsername = [System.Security.Principal.WindowsIdentity]::GetCurrent().Name
$myComputerDomain = ( Get-WmiObject Win32_ComputerSystem ).Domain
$myComputerName = ( Get-WmiObject Win32_ComputerSystem ).Name
Log ""
Log ""
Log "#############################################################################"
Log "Script details..."
Log "...script spec: $myScriptSpec"
Log "...script path: $myScriptPath"
Log "...script name: $myScriptName"
Log "...script log: $myScriptLog"
Log "...script version: $myScriptVersion"
Log "...user: $myUsername"
Log "...computer name: $myComputerName"
Log "...computer domain: $myComputerDomain"
Log "...done..."
$myScriptData = Join-Path -Path $myScriptPath -ChildPath "DATA\"
#############################################################################################################
# Start main engines...
#
Log ""
Log "Initialisation..."
If ( -not ( Test-Path -Path $myScriptData -PathType Container ) ) {
Log "...creating data folder..."
Try {
New-Item -Path $myScriptData -ItemType Directory -Force
} Catch {
Log "...failed to create DATA folder..."
Log $_
Abort "...script cannot continue..."
}
Log "...created ok..."
}
Log "...the URLs to monitor are:"
$URLS = @(
"https://vox.veritas.com/t5/NetBackup/bd-p/netbackup"
,"https://vox.veritas.com/t5/NetBackup-Appliance/bd-p/netbackup-appliance"
,"https://vox.veritas.com/t5/OpsCenter/bd-p/opscenter"
,"https://vox.veritas.com/t5/Articles/tkb-p/Articles-Backup-and-Recovery"
,"https://vox.veritas.com/t5/Downloads/tkb-p/Downloads-Backup-and-Recovery"
)
$Count = 0
ForEach ( $URL In $URLS ) {
$Count++
Log "...num: $Count $URL"
$OldFile = "$myScriptData\old$Count.txt"
$NewFile = "$myScriptData\new$Count.txt"
$DifFile = "$myScriptData\dif$Count.txt"
If ( -not ( Test-Path -Path $OldFile ) ) { Set-Content -Path $OldFile -Value "" -Force }
If ( -not ( Test-Path -Path $NewFile ) ) { Set-Content -Path $NewFile -Value "" -Force }
If ( ( Test-Path -Path $DifFile ) ) { Remove-Item -Path $DifFile -Force }
}
$Speech = $True
Try {
Add-Type -AssemblyName System.Speech
$Say = New-Object System.Speech.Synthesis.SpeechSynthesizer
Log "...speech is possible..."
} Catch {
$Speech = $False
Log "...speech is NOT possible..."
}
Log "...done..."
#############################################################################################################
# Lift off...
# ...but let's only monitor until midnight...
#
Log ""
Log "Begin monitoring..."
$DateStarted = ( Get-Date ).ToString( "dd-MMM-yyyy" )
# ...this turns off the PowerShell progress bar which speeds up the fetch of the web page...
$ProgressPreference = "SilentlyContinue"
# ...to match the security level of the Veritas VOX web-site...
[Net.ServicePointManager]::SecurityProtocol = "tls12"
# ...now we begin looping until midnight...
$Loop = 0
Do {
$Loop++
# ...just a little to show that we are still working...
If ( ( $Loop % 100 ) -eq 0 ) { Log "...loop: $Loop" }
$Count = 0
ForEach ( $URL In $URLS ) {
$Count++
# ...our data files are number based...
$OldFile = "$myScriptData\old$Count.txt"
$NewFile = "$myScriptData\new$Count.txt"
$DifFile = "$myScriptData\dif$Count.txt"
# ...pull out the main topic section name from the URL...
$Section = $URL.Split( "/" )[4]
If ( $Debug ) { Log "...checking: $Count $Section" }
Try {
$Page = Invoke-WebRequest $URL -Method Get -Erroraction Stop
$Sts = $Page.StatusCode
} Catch {
$Sts = $_.Exception.Page.StatusCode.value__
}
If ( $Sts -ne 200 ) {
Log "...failed to fetch: $URL status: $Sts"
} Else {
If ( $Page.RawContentLength -lt 150000 ) {
Log "...page too small: $($Page.RawContentLength) for: $Section"
} Else {
# ...here we select/extract the "InnerText" content of the appropriate page links from the web page content...
# ...which generates a list of topic headings...
# ...plus the original poster/contributor name...
# ...plus the most recent responder/replier/contributor name...
# ...plus at the very end of the list the top kudo'ed or top authors (which we do not need, we remove these later)...
$Topics = $Page.Links | Where-Object { $_.Class -like "*p*ge-link*" } | Select-Object InnerText
If ( $Topics.Count -lt 40 ) {
Log "...low topic count: $($Topics.Count) for: $Section"
} Else {
# ...now we come to the crux of it...
# ...first, strip off the trailing five entries which are the names of the top five kudo'ed or top four...
# ...authors - yes, this does mean that we loose the name of the author of the last topic in Articles...
# ...and Downloads, but that doesn't matter for our purposes, because the changes/updates that we want...
# ...to detect occur at the head/top of the list...
$Topics = $Topics | Select-Object -First ( $Topics.Count - 5 )
# ...it's time to rotate stock...
If ( Test-Path -Path $OldFile ) { Remove-Item -Path $OldFile -Force }
# ...but we need to be able to tolerate Brexit (so sad!), i.e. the rug being pulled from underneath us...
If ( Test-Path -Path $NewFile ) {
Move-Item -Path $NewFile -Destination $OldFile -Force
} Else {
Set-Content -Path $NewFile -Value "" -Force
}
# ...if we are still missing an old file, then we still need an empty old file to diff against...
If ( -not ( Test-Path -Path $OldFile ) ) { Set-Content -Path $OldFile -Value "" -Force }
# ...let's save the current list of topics, in the order that they appear on the web page...
$Topics | Set-Content -Path $NewFile -Force
# ...let's compare / diff the lists of topics...
fc.exe /L /U "$NewFile" "$OldFile" >"$DifFile"
# ...check if there was a change/update in the list of topics and/or contributors...
If ( $LastExitCode -eq 1 ) {
# ...yes, there was a change in the list of topics and/or contributors...
[console]::beep(500,300)
[console]::beep(500,300)
[console]::beep(500,300)
Log "...updated: $Section"
If ( $Speech ) { $Say.Speak( "VOX $Section updated." ) }
}
}
}
}
}
If ( $Debug ) { Log "...sleeping..." }
Start-Sleep -Seconds 300
$DateNow = ( Get-Date ).ToString( "dd-MMM-yyyy" )
} Until ( $DateNow -ne $DateStarted )
Log "...monitoring is done for the day..."
#############################################################################################################
# Our day's work is done...
#
Log "...script exiting..."
Exit
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