Data Refresh API error in PowerShell

[Anonymous]

Hello,

I'm getting the following error when using the sample code in GitHub. 

Invoke-RestMethod : The remote server returned an error: (415) Unsupported Media Type.
At C:\Users\user\Documents\GitHub\powerbi-powershell\refreshproduction.ps1:82 char:1
+ Invoke-RestMethod -Uri $uri –Headers $authHeader –Method GET –Verbose
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-RestMethod], WebException
+ FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeRestMethodCommand

# This sample script calls the Power BI API to progammtically trigger a refresh for the dataset
# It then calls the Power BI API to progammatically to get the refresh history for that dataset
# For full documentation on the REST APIs, see:
# https://msdn.microsoft.com/en-us/library/mt203551.aspx 

# Instructions:
# 1. Install PowerShell (https://msdn.microsoft.com/en-us/powershell/scripting/setup/installing-windows-powershell) and the Azure PowerShell cmdlets (https://aka.ms/webpi-azps)
# 2. Set up a dataset for refresh in the Power BI service - make sure that the dataset can be 
# updated successfully
# 3. Fill in the parameters below
# 4. Run the PowerShell script

# Parameters - fill these in before running the script!
# =====================================================

# An easy way to get group and dataset ID is to go to dataset settings and click on the dataset
# that you'd like to refresh. Once you do, the URL in the address bar will show the group ID and 
# dataset ID, in the format: 
# app.powerbi.com/groups/{groupID}/settings/datasets/{datasetID} 

$groupID = "FIll Me In" # the ID of the group that hosts the dataset. Use "me" if this is your My Workspace
$datasetID = "FIll Me In" # the ID of the dataset that hosts the dataset

# AAD Client ID
# To get this, go to the following page and follow the steps to provision an app
# https://dev.powerbi.com/apps
# To get the sample to work, ensure that you have the following fields:
# App Type: Native app
# Redirect URL: urn:ietf:wg:oauth:2.0:oob
#  Level of access: all dataset APIs
$clientId = "FIll Me In" 

# End Parameters =======================================

# Calls the Active Directory Authentication Library (ADAL) to authenticate against AAD
function GetAuthToken
{
       $adal = "${env:ProgramFiles(x86)}\Microsoft SDKs\Azure\PowerShell\ServiceManagement\Azure\Services\Microsoft.IdentityModel.Clients.ActiveDirectory.dll"
 
       $adalforms = "${env:ProgramFiles(x86)}\Microsoft SDKs\Azure\PowerShell\ServiceManagement\Azure\Services\Microsoft.IdentityModel.Clients.ActiveDirectory.WindowsForms.dll"
 
       [System.Reflection.Assembly]::LoadFrom($adal) | Out-Null
 
       [System.Reflection.Assembly]::LoadFrom($adalforms) | Out-Null
 
       $redirectUri = "urn:ietf:wg:oauth:2.0:oob"
 
       $resourceAppIdURI = "https://analysis.windows.net/powerbi/api"
 
       $authority = "https://login.windows.net/common/oauth2/authorize";
 
       $authContext = New-Object "Microsoft.IdentityModel.Clients.ActiveDirectory.AuthenticationContext" -ArgumentList $authority
 
       $authResult = $authContext.AcquireToken($resourceAppIdURI, $clientId, $redirectUri, "Auto")
 
       return $authResult
}

# Get the auth token from AAD
$token = GetAuthToken

# Building Rest API header with authorization token
$authHeader = @{
   'Content-Type'='application/json'
   'Authorization'=$token.CreateAuthorizationHeader()
}

# properly format groups path
$groupsPath = ""
if ($groupID -eq "me") {
    $groupsPath = "myorg"
} else {
    $groupsPath = "myorg/groups/$groupID"
}

# Refresh the dataset
$uri = "https://api.powerbi.com/v1.0/$groupsPath/datasets/$datasetID/refreshes"
Invoke-RestMethod -Uri $uri –Headers $authHeader –Method POST –Verbose

# Check the refresh history
$uri = "https://api.powerbi.com/v1.0/$groupsPath/datasets/$datasetID/refreshes"
Invoke-RestMethod -Uri $uri –Headers $authHeader –Method GET –Verbose

Line 78

Invoke-RestMethod -Uri $uri –Headers $authHeader –Method POST –Verbose

Appreciated if someone could help resolve this issue.

Thanks,

Anton

[v-haibl-msft]

@Anonymous

What is the URL address for the sample code in GitHub? Have you tried to change to a different dataset ID to see if the refresh failure is related to your dataset? Before execute the script, could you please confirm that the dataset can be refreshed properly in Power BI Service?

Best Regards,
Herbert

[Anonymous]

Hi @v-haibl-msft and @Vicky_Song,

I did try with a different dataset and still get the same error. Here's the link to the code;

https://github.com/Azure-Samples/powerbi-powershell/blob/master/manageRefresh.ps1

And Yes I can manually and periodically refresh the dataset without any issue.

Please let em know if you need any further details.

Thanks,

Anton 

[ksabi]

Hello, 

Hello, 

I tried the same code but get an error too. 

the probleme is that the "-" of Uri is not the same as '-" of Headers. the one of header is bigger !! 

-Uri $uri –Headers

i made a copy/past  '-' of Uri befor Header, Method and Verbose => this action resolved the issue for me.

Another issue now, how do not display  the autentication window when we execute the script ??

Regards,

Khaled

[Corinna]

Same issue here too. 

Invoke-RestMethod : The remote server returned an error: (404) Not Found.
At line:81 char:1
+ Invoke-RestMethod -Uri $uri –Headers $authHeader –Method POST –Verbos ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-RestMethod], WebException
+ FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeRestMethodCommand