added function to build a list of intervals from hashtable

Extractor.ps1

@@ -102,4 +102,37 @@ function ProcessLogToHash {
         $Path
     )
     ProduceHashMap -Elements $(getElems -Path $Path)
+}
+
+function buildIntervals {
+    param (
+        $hash
+    )
+    $array = @()
+    foreach ($key in $hash.Keys){
+        Write-Host $key
+        $list = $hash.$key
+        Write-Host $list
+        $lastState = $null
+        $lastTS = $null
+        foreach ($elem in $list){
+            Write-Host $elem
+            if (($elem.state -eq 'Started') -and ($null -eq $lastState)) {
+                $lastState=$elem.state
+                $lastTS=$elem.ts
+            }
+            if (($elem.state -ne 'Started') -and ($lastState -eq 'Started')) {
+                $array += @(New-Object psobject -Property @{
+                    begining=$lastTS
+                    ending=$elem.ts
+                    state=$elem.state
+                    vm=$key
+                })
+                $lastState=$null
+                $lastTS=$null
+            }
+            Write-Host "$array"
+        }
+    }
+    return $array
 }