How to fetch the specific key value inside the collection using powershell - powershell

Question

Given below command giving the output as object
$output = (Invoke-AzVMRunCommand -ResourceGroupName $rgname -Name $vmname -CommandId 'RunPowerShellScript' -ScriptPath authoring.ps1).value
Output
Mode : Process
ContextDirectory :
ContextFile :
CacheDirectory :
CacheFile :
Settings : {}
Code : ComponentStatus/StdOut/succeeded
Level : Info
DisplayStatus : Provisioning succeeded
Message : #{cluster_name=test01; status=green; timed_out=False; number_of_nodes=3;
number_of_data_nodes=3;
active_primary_shards=25; active_shards=50; relocating_shards=0;
initializing_shards=0;
unassigned_shards=0; delayed_unassigned_shards=0; number_of_pending_tasks=0;
number_of_in_flight_fetch=0; task_max_waiting_in_queue_millis=0;
active_shards_percent_as_number=100.0}
Time :
Code : ComponentStatus/StdErr/succeeded
Level : Info
DisplayStatus : Provisioning succeeded
How to get the Message ==> number_of_nodes = 3 and number_of_data_nodes=3 in some variable so based on this value I need to perform some action.
Thanks

Answer 1

Ok, if as you tested $Output.Message is a multiline string like
#{cluster_name=test01; status=green; timed_out=False; number_of_nodes=3;
number_of_data_nodes=3;
active_primary_shards=25; active_shards=50; relocating_shards=0;
initializing_shards=0;
unassigned_shards=0; delayed_unassigned_shards=0; number_of_pending_tasks=0;
number_of_in_flight_fetch=0; task_max_waiting_in_queue_millis=0;
active_shards_percent_as_number=100.0}
you can convert this into a Hashtable like this:
$data = $Output.Message.Trim("#{}") -replace ';', [environment]::NewLine | ConvertFrom-StringData
If you print that out to screen with $data | Format-Table -AutoSize it looks like this:
Name Value
---- -----
number_of_nodes 3
task_max_waiting_in_queue_millis 0
number_of_data_nodes 3
status green
initializing_shards 0
active_shards_percent_as_number 100.0
cluster_name test01
delayed_unassigned_shards 0
active_shards 50
unassigned_shards 0
active_primary_shards 25
number_of_in_flight_fetch 0
timed_out False
relocating_shards 0
number_of_pending_tasks 0
With this Hashtable format, it is easy to get the values of the different keys.
For instance:
$data.number_of_nodes # --> 3
$data.number_of_data_nodes # --> 3
$data.cluster_name # --> test01