Iterate through json custom object - json

Question

I'm trying to perform some config transformations on JSON files using PowerShell.
For this there's several input json files and a transform one (one for each environment).
Input sample (AzureStorage.json):
{
"$schema": "http://datafactories.schema.management.azure.com/schemas/2015-09-01/Microsoft.DataFactory.LinkedService.json",
"name": "AzureStorage",
"properties": {
"type": "AzureStorage",
"typeProperties": {
"connectionString": "My Connection String here"
} } }
Transform:
{
"$schema": "http://datafactories.schema.management.azure.com/vsschemas/V1/Microsoft.DataFactory.Config.json",
"AzureStorage": [
{
"name": "$.properties.typeProperties.connectionString",
"value": "DefaultEndpointsProtocol=https;AccountName=mytestaccount;AccountKey=d;lasfjdalfdjfldjfdsfds;EndpointSuffix=core.windows.net"
}
],
"DataLakeStore": [
{
"name": "$.properties.typeProperties.dataLakeStoreUri",
"value": "https://mydatalake.azuredatalakestore.net/webhdfs/v1"
}
]
}
What I need to do, is to load the transform file, then traverse it, finding the names of the input files I need to transform (in this example AzureStorage.json and DataLakeStore.json).
Next, I need to replace the properties accordingly. I'm trying to do it by loading the transform file into a variable using ConvertFrom-Json, but I not sure how to traverse it afterwards.

Answer 1

I don't know hat exactly you need. I'm guessing access to the information within the JSON file.
What about this approach?
$json_object = Get-Content -Raw -Path '<your_path>\transform.json' | ConvertFrom-Json
$azure_storage = #('AzureStorage'; 'DataLakeStore')
ForEach ($azure in $json_object) {
ForEach ($storage in $azure_storage) {
Write-Output $azure.$storage.name
Write-Output $azure.$storage.value
}
}
Edit Due to edit I got it. You need a generic access.
Here you go:
$json_object = (Get-Content -Path '<your_path>\transform.json') -join "`n" | ConvertFrom-Json
ForEach ($object in $json_object.PsObject.Properties) {
Write-Output $object.name
Write-Output $object.value
}
Explanation:
(Get-Content -Path '<your_path>\transform.json') -join "n"` is a Microsoft's MSDN recommended way to read json files.
You need to find out where the values are. The object you are using is a "Windows PowerShell custom object" - PsObject. To access the you need to use .Properties.value. Then you have the Strings you want and you can access them using .name and .value.