HP OneView - Manual (Page 296)

function waitFor-completion ([object]$taskResource,[string]$authValue,[string]$hostname)
{
<#
.DESCRIPTION
Checks the status of the backup every twenty seconds, stops when status changes from running to a
different status
.PARAMETER taskResource
The response object from the backup-appliance method
.PARAMETER authValue
The authorized session ID
.PARAMETER hostname
The appliance to connect to (in https://{ipaddress} format)
.INPUTS
None, does not accept piping
.OUTPUTS
The new task resource object, which contains the Uri to get the backup resource in the next function
.EXAMPLE
$taskResource = waitFor-Completion $taskResource $sessionID $hostname
#>
# extracts the Uri of the task Resource from itself, to poll repeatedly
$taskResourceUri = $taskResource.uri
if ($taskResourceUri -eq $null)
{
# Caller will provide the error message
return
}
# appends the Uri to the hostname to create a fully-qualified Uri
$fullTaskUri = $hostname + $taskResourceUri
# retries if unable to get backup progress information
$errorCount = 0
$errorMessage = ""
if ($global:interactiveMode -eq 1)
{
Write-Host "Backup initiated."
Write-Host "Checking for backup completion, this may take a while."
}
# a while loop to determine when the backup process is finished
do
{
try
{
# creates a new webrequest with appropriate headers
$taskResourceJson = setup-request -Uri $fullTaskUri -method "GET" -accept "application/json" -authValue
$authValue -isSilent $true
# converts the response from the Appliance into a hash table
$taskResource = $taskResourceJson | convertFrom-Json
# checks the status of the task manager
$status = $taskResource.taskState
}
catch
{
$errorMessage = $error[0].Exception.Message
$errorCount = $errorCount + 1
$status = "RequestFailed"
Start-Sleep -s 15
continue
}
# Update progress bar
if ($global:interactiveMode -eq 1)
{
$trimmedPercent = ($taskResource.completedSteps) / 5
$progressBar = "[" + "=" * $trimmedPercent + " " * (20 - $trimmedPercent) + "]"
Write-Host "`r Backup progress: $progressBar " $taskResource.completedSteps "%" -NoNewline
}
# Reset the error count since progress information was successfully retrieved
$errorCount = 0
# If the backup is still running, wait a bit, and then check again
if ($status -eq "Running")
{
Start-Sleep -s 20
}
} while (($status -eq "Running" -or $status -eq "RequestFailed") -and $errorCount -lt 20);
# if the backup reported an abnormal state, report the state and exit function
if ($status -ne "Completed")
{
296 Backup and restore script examples