removing an entry from JSON using powershell - json

Question

I am using GCP's BigQuery. I want to remove access of someone. Per https://cloud.google.com/bigquery/docs/dataset-access-controls#bq_1, I run the command
bq show \
--format=prettyjson \
project1:dataset1 > /tmp/myjson.json
and here is the JSON I get
{
"access": [
{
"role": "WRITER",
"specialGroup": "projectWriters"
},
{
"role": "OWNER",
"specialGroup": "projectOwners"
},
{
"role": "OWNER",
"userByEmail": "employee1#myco.com"
},
{
"role": "READER",
"specialGroup": "projectReaders"
}
],
"creationTime": "1528762487037",
"datasetReference": {
"datasetId": "dataset1",
"projectId": "project1"
},
"description": "My Data",
"etag": "<redacted>",
"friendlyName": "dataset1",
"id": "project1:dataset1",
"kind": "bigquery#dataset",
"lastModifiedTime": "1528762487037",
"location": "US",
"selfLink": "https://bigquery.googleapis.com/bigquery/v2/projects/project1/datasets/dataset1"
}
I an new to powershell and am trying to remove the entry for employee1, and put the json back for the
bq update
command per the link above.
Any ideas how to get the index of the entry.
I have tried to just get the "access" part of the json as an Array object. But the challenge is to find the employee1 entry index and remove that Array member and put it back into the json.
Any help is appreciated.

Answer 1

Using the convertfrom-json cmdlet, you get an object you can edit. Then you can convert it back using convertto-json
$x=#'
{
"access": [
{
"role": "WRITER",
"specialGroup": "projectWriters"
},
{
"role": "OWNER",
"specialGroup": "projectOwners"
},
{
"role": "OWNER",
"userByEmail": "employee1#myco.com"
},
{
"role": "READER",
"specialGroup": "projectReaders"
}
],
"creationTime": "1528762487037",
"datasetReference": {
"datasetId": "dataset1",
"projectId": "project1"
},
"description": "My Data",
"etag": "<redacted>",
"friendlyName": "dataset1",
"id": "project1:dataset1",
"kind": "bigquery#dataset",
"lastModifiedTime": "1528762487037",
"location": "US",
"selfLink": "https://bigquery.googleapis.com/bigquery/v2/projects/project1/datasets/dataset1"
}
'# | ConvertFrom-json
$x.Access=$x.Access.Where({$_.userByEmail -ne 'employee1#myco.com'})
$x | convertto-json