Extract data from json using powershell - powershell

Question

I executing below command using strem from powershell and I am getting response in form of json using the below code
$session = New-SSHSession -ComputerName $S_1 -Credential $cred
$Strem = New-SSHShellStream -SSHSession $Session
$cmd_4 = $Strem.WriteLine("shell.connect('USER#X92SL224XXX2XX:3306')")
sleep -Seconds 5
$Strem.read()
$pass = $Strem.WriteLine("password")
sleep -Seconds 5
$Strem.read()
$cmd_5 = $Strem.WriteLine("var cluster = dba.getCluster('IBDCluster')")
sleep -Seconds 5
$Strem.read()
$cmd_6 = $Strem.WriteLine("cluster.status()")
sleep -Seconds 5
$ClusterStatus = $Strem.read()
[DBG]: PS C:\Windows\system32>>
cluster.status()
{
"clusterName": "IBDCluster",
"defaultReplicaSet": {
"name": "default",
"primary": "X92SL224XXX2XX:3306",
"ssl": "REQUIRED",
"status": "OK_NO_TOLERANCE",
"statusText": "Cluster is NOT tolerant to any failures. 1 member is not active.",
"topology": {
"X92SL224XXX1XX:3306": {
"address": "X92SL224XXXXXXX:3306",
"memberRole": "SECONDARY",
"mode": "R/O",
"readReplicas": {},
"role": "HA",
"status": "ONLINE",
"version": "5.7.36"
},
"X92SL224XXX2XX:3306": {
"address": "X92SL224XXX2XX:3306",
"memberRole": "PRIMARY",
"mode": "R/W",
"readReplicas": {},
"role": "HA",
"status": "ONLINE",
"version": "5.7.36"
},
"X92SL224XXXX3XX:3306": {
"address": "X92SL224XXX3XX:3306",
"instanceErrors": [
"ERROR: group_replication has stopped with an error."
],
"memberRole": "SECONDARY",
"memberState": "ERROR",
"mode": "R/O",
"readReplicas": {},
"role": "HA",
"status": "(MISSING)",
"version": "5.7.36"
}
},
"topologyMode": "Single-Primary"
},
"groupInformationSourceMember": "X92SL224XXXXXXX:3306"
}
[48;5;254m[38;5;23m My[0m[48;5;254m[38;5;166mSQL [0m[48;5;237m[38;5;15m X92SL224QDBA2DB:3306 ssl [0m[48;5;221m[38;5;0m JS [0m[48;5;0m> [0m
I need to fetch all the address, memberRole, memberState from the above data.
I was trying to convert from Json but getting error like
ConvertFrom-Json : Invalid JSON primitive: cluster.status.
Please let me know how to get the data from above

Answer 1

It looks like you simply need to remove the cluster.status() line that precedes the JSON text in the multi-line string that $Strem.Read() returns, as well as the extra line that follows it:
$ClusterStatus = $Strem.Read() -replace '^.+|.+$' | ConvertFrom-Json
Note: -replace '^.+|.+$' removes the first and last line from the input string, without also trying to remove a newline that follows / precedes them; however, these newlines are incidental whitespace that doesn't affect the operation of ConvertFrom-Json.