Powershell query multidimensional hash-CodePudding

I'm struggling creating and querying data of an object. (I think hash table)

two environment (test and production)
two servertypes per environment (webserver and appl servers)
1 or more servers of each type

I want to store the hostnames within the applicable section. I created the following hash:

$arr =@{}
    $arr.Environment = @{}
    $arr.Environment.Production = @{}
    $arr.Environment.Production.serverType = @{}
    $arr.Environment.Production.serverType.webServer = @{}
    $arr.Environment.Production.serverType.entServer = @{}

    $arr.Environment.Test = @{}
    $arr.Environment.Test.serverType = @{}
    $arr.Environment.Test.serverType.webServer = @{}
    $arr.Environment.Test.serverType.entServer = @{}

I found that I can access data like:

$serversArray.Environment.Test.serverType.webServer

I would like to know:

is this the right way of doing this? are there better / easier way to accomplish this?
how do I loop/filter this object, retrieving servernames that meet the specified criteria? Since I need to have 1. all test webservers then 2. all test appl servers etc

thanks

CodePudding user response：

If you're able to save all this in one go (using variables or hardcoded strings), you should be using the native format to store it - much more readable.

See

$Optiplex = @{
                'Brand' = 'Dell'
                'Model' = 'Optiplex'
                'Specs' = @{
                                'RAM' = '4 GB'
                                'CPU' = 'Intel i5'
                                'USB Ports' = '3'
                                'CD/DVD Drive' = 'No'
                                'HDD' = '320 GB - SSD'
                           } #Specs
             } #Optiplex

From this walkthrough

You'll be able to access the variables for the hashtable in the same way, such as Optiplex.Specs.RAM to get the value for RAM.

CodePudding user response：

I found following way to achieve this:

$order = @(("Test","Production"),("webServer", "entServer"))
        
foreach($env in $order[0]) {
    Write-Host "Environment: $env"
    foreach($svr in $order[1]) {
        Write-Host "ServerType: $svr"
        write-host "hostnames: "$serversArray.Environment.$($env).serverType.$($svr)
    }
}

This will loop the correct way/sequence and lists correct servers:

Environment: Test
ServerType: webServer
hostnames:  tweb1 tweb2
ServerType: appServer
hostnames:  tapp1
Environment: Production
ServerType: webServer
hostnames:  pweb1 pweb2 pweb3
ServerType: appServer
hostnames:  papp1 papp2 papp3 papp4