How to troubleshoot RESTful endpoint response in Azure AD B2C custom policy - azure-ad-b2c

Question

I am trying to get the groups that a certain user belongs to in their sign-in journey.
I am using calling RESTful graph API for that.
Here are my Technical Profiles, the idea is to get token for my graph API app and use the token to do a /getMemberGroups call to get the groups as StringCollection:
<ClaimsProvider>
<DisplayName>Get user groups of a certain user</DisplayName>
<TechnicalProfiles>
<TechnicalProfile Id="GetAccessTokenForGraphApi">
<DisplayName></DisplayName>
<Protocol Name="Proprietary" Handler="Web.TPEngine.Providers.RestfulProvider, Web.TPEngine, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" />
<Metadata>
<Item Key="ServiceUrl">https://login.microsoftonline.com/{tenant_name}.onmicrosoft.com/oauth2/v2.0/token</Item>
<Item Key="AuthenticationType">Basic</Item>
<Item Key="SendClaimsIn">Form</Item>
</Metadata>
<CryptographicKeys>
<Key Id="BasicAuthenticationUsername" StorageReferenceId="B2C_1A_userMgntAppId" />
<Key Id="BasicAuthenticationPassword" StorageReferenceId="B2C_1A_userMgntAppClientSecret" />
</CryptographicKeys>
<InputClaims>
<InputClaim ClaimTypeReferenceId="grant_type" DefaultValue="client_credentials" />
<InputClaim ClaimTypeReferenceId="scope" DefaultValue="https://graph.microsoft.com/.default" />
</InputClaims>
<OutputClaims>
<OutputClaim ClaimTypeReferenceId="bearerToken" PartnerClaimType="access_token" />
</OutputClaims>
<UseTechnicalProfileForSessionManagement ReferenceId="SM-Noop" />
</TechnicalProfile>
<TechnicalProfile Id="GetUserGroups">
<DisplayName>Retrieves security groups assigned to the user</DisplayName>
<Protocol Name="Proprietary" Handler="Web.TPEngine.Providers.RestfulProvider, Web.TPEngine, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" />
<Metadata>
<Item Key="ServiceUrl">https://graph.microsoft.com/v1.0/users/{objectId}/getMemberGroups</Item>
<Item Key="AuthenticationType">Bearer</Item>
<Item Key="UseClaimAsBearerToken">bearerToken</Item>
<Item Key="SendClaimsIn">Body</Item>
<Item Key="AllowInsecureAuthInProduction">true</Item>
<Item Key="ClaimUsedForRequestPayload">securityEnabledOnly</Item>
<Item Key="DefaultUserMessageIfRequestFailed">Cannot process your request right now, please try again later.</Item>
</Metadata>
<InputClaims>
<InputClaim Required="true" ClaimTypeReferenceId="objectId" />
<InputClaim Required="true" ClaimTypeReferenceId="bearerToken" />
<InputClaim Required="true" ClaimTypeReferenceId="securityEnabledOnly" DefaultValue="false" AlwaysUseDefaultValue="true" />
</InputClaims>
<OutputClaims>
<OutputClaim ClaimTypeReferenceId="groups" PartnerClaimType="value" />
</OutputClaims>
<UseTechnicalProfileForSessionManagement ReferenceId="SM-Noop" />
</TechnicalProfile>
</TechnicalProfiles>
</ClaimsProvider>
The GetAccessTokenForGraphApi TP is working fine and I can get the bearerToken output claim if I call it solely in my userJourney.
However, when I put GetUserGroups TP as next orchestration step, I have this sort of exception in my application insight log:
{
"Kind": "HandlerResult",
"Content": {
"Result": true,
"RecorderRecord": {
"Values": [
{
"Key": "SendErrorTechnicalProfile",
"Value": "OpenIdConnectProtocolProvider"
},
{
"Key": "Exception",
"Value": {
"Kind": "Handled",
"HResult": "80131500",
"Message": "Cannot process your request right now, please try again later.",
"Data": {
"IsPolicySpecificError": false
},
"Exception": {
"Kind": "Handled",
"HResult": "80131500",
"Message": "Processing of the HTTP request resulted in an exception. Please see the HTTP response returned by the 'Response' property of this exception for details.",
"Data": {}
}
}
}
]
},
I believe there is some error when calling the RESTful endpoint. My question is, how I can "visualize" the restful call to see what I actually send out? For example, as you can see I am putting objectId in my URL, seeing the actual URL would be useful to troubleshoot the restful call.
Kindly let me know if more information I need to supplement. Many thanks in advance!

Answer 1

You can't do this:
<Item Key="ServiceUrl">https://graph.microsoft.com/v1.0/users/{objectId}/getMemberGroups</Item>
And this in combination:
<Item Key="SendClaimsIn">Body</Item>
You can either send claims in URL, where your claim resolver will resolve the objectId, or you send claims in body.
https://learn.microsoft.com/en-us/azure/active-directory-b2c/restful-technical-profile#metadata
That is why your call fails.
You need to call your own API, and then have your own API call Graph API.