Add Check-FileRecency

.gitignore

@@ -1,2 +1,3 @@
 SnmpCredentials.ps1
 SnmpV2Credentials.ps1
+Check-FileRecency-Settings.ps1

FileRecency/Check-FileRecency-SettingsExample.ps1

@@ -0,0 +1,16 @@
+[System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("UseDeclaredVarsMoreThanAssignments", "SnmpInfo")]
+$filesToCheck = @(
+    @{
+        NameForChannel      = "Server1 DB_dump"
+        FileSearchString   = "\\backups\Server1\DB_dump_*"
+        MinimumSize = 800MB
+        MaximumAge  = New-TimeSpan -Hours 30
+    }
+
+    @{
+        NameForChannel      = "Server2 DB_dump"
+        FileSearchString   = "\\backups\Server2\DB_dump_*"
+        MinimumSize = 10GB
+        MaximumAge  = New-TimeSpan -Hours 30
+    }
+)

FileRecency/Check-FileRecency.ps1

@@ -0,0 +1,42 @@
+#Requires -Modules PrtgXml
+# Install-Module PrtgXml
+# https://www.powershellgallery.com/packages/PrtgXml
+# https://github.com/lordmilko/PrtgXml
+
+Param(
+    [Parameter(Mandatory=$false)]
+    [string]
+    $CheckFileRecencySettings = 'Check-FileRecency-Settings.ps1'
+)
+
+$path = Join-Path $PSScriptRoot $CheckFileRecencySettings
+. $path
+
+Prtg {
+    foreach ($fileToCheck in $filesToCheck) {
+        if (Test-Path -Path $fileToCheck.FileSearchString) {
+            $files = Get-Item -Path $fileToCheck.FileSearchString
+            $newest = $files | Sort-Object LastWriteTime -Descending | Select-Object -First 1
+            $age = New-TimeSpan -Start $newest.LastWriteTime
+
+            Result {
+                Channel "$($fileToCheck.NameForChannel) age OK"
+                Value ([int]($age -lt $fileToCheck.MaximumAge))
+                Unit 'Custom'
+                ValueLookup "prtg.standardlookups.boolean.statetrueok"
+            }
+
+            Result {
+                Channel "$($fileToCheck.NameForChannel) size OK"
+                Value ([int]($newest.Length -gt $fileToCheck.MinimumSize))
+                Unit 'Custom'
+                ValueLookup "prtg.standardlookups.boolean.statetrueok"
+            }
+        }
+        else {
+            Error 1
+            Text "No $($fileToCheck.NameForChannel) files found with search string $($fileToCheck.FileSearchString).  Aborting further checks."
+            break
+        }
+    }
+}