WSO2 Self contained AccessToken claims configuration -- the "sub" field

I am working on WSO2IS, and had been able to get a self contained access token out of WSO2IS by Oauth2 "password" grant type by following this post

I am also able to verify the signature of the token in application (see this post)

yet there is still one final step that I can not pass

here is a sample of access token I have got out of WSO2IS

{iss=https://localhost:9443/oauth2/token, sub=wjz@carbon.super, aud=[J3lbMMMJFwXB6neKzXv030S9lfga], exp=1488710173, iat=1488706573, azp=J3lbMMMJFwXB6neKzXv030S9lfga}

you can see that value of "sub" is a username, which correspond to the claim " http://wso2.org/claims/username".

I want to change the configure in WSO2IS so that the "sub" correspond to claim " http://wso2.org/claims/userid"

I changed the "Claim Configuration" under "Service Providers"; I also changed the "sub" in the "http://wso2.org/oidc/claim" under "Claims". but can not get any success.

are there anything I have missed?

please advise

thanks

I finally have this problem solved by coding instead of configuring.

I had implemented an extension for a Self-Contained Access Token (JWT in Oauth2) Generator by followed this post . I build the jar, and upload the jar under /repository/components/lib/

I just checkout this repo , and made the following changes

 /**
     * For a locally authenticated user, subject identifier is supposed to be as below.
     * <userstore_domain>/<username>@<tenant_domain>.
     * 
     * yet somehow, what I got is <username>@<tenant_domain>
     * @param SubjectId
     * @return
     * @throws IdentityOAuth2Exception 
     */
    private static SubjectTriple parseSubjectId(String subjectId) throws IdentityOAuth2Exception{
        if (StringUtils.isBlank(subjectId)){
            throw new IdentityOAuth2Exception("invalid subject identifier");

        }
        /*
         * domain may not present
         */
        String sid = null;
        SubjectTriple st = new SubjectTriple();
        if(StringUtils.contains(subjectId, '/')){
            st.domain = StringUtils.substringBeforeLast(subjectId, "/");
            sid = StringUtils.substringAfterLast(subjectId, "/");
        }else{
            sid = subjectId;
        }

        st.username = StringUtils.substringBeforeLast(sid, "@");
        st.profile = StringUtils.substringAfterLast(sid, "@");

        return st;
    }

    /**
     * To build id token from OauthToken request message context
     *
     * @param request Token request message context
     * @return Signed jwt string.
     * @throws IdentityOAuth2Exception
     */
    protected String buildIDToken(OAuthTokenReqMessageContext request)
            throws IdentityOAuth2Exception {

        String issuer = OAuth2Util.getIDTokenIssuer();
        long lifetimeInMillis = OAuthServerConfiguration.getInstance().
                getApplicationAccessTokenValidityPeriodInSeconds() * 1000;
        long curTimeInMillis = Calendar.getInstance().getTimeInMillis();


        SubjectTriple triple = parseSubjectId(request.getAuthorizedUser().getAuthenticatedSubjectIdentifier());
        String userId = null;
        try {
            userId = CarbonContext.getThreadLocalCarbonContext().getUserRealm().getUserStoreManager()
                    .getUserClaimValue(triple.username, Constants.LOCAL_CLAIM__UserID, triple.profile);
        } catch (UserStoreException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        String clientId = request.getOauth2AccessTokenReqDTO().getClientId();
        // Set claims to jwt token.
        JWTClaimsSet jwtClaimsSet = new JWTClaimsSet();
        jwtClaimsSet.setIssuer(issuer);
        jwtClaimsSet.setSubject(userId);
        jwtClaimsSet.setAudience(Arrays.asList(clientId));
        jwtClaimsSet.setClaim(Constants.AUTHORIZATION_PARTY, clientId);
        jwtClaimsSet.setExpirationTime(new Date(curTimeInMillis + lifetimeInMillis));
        jwtClaimsSet.setIssueTime(new Date(curTimeInMillis));

        if (JWSAlgorithm.NONE.getName().equals(signatureAlgorithm.getName())) {
            return new PlainJWT(jwtClaimsSet).serialize();
        }
        return signJWT(jwtClaimsSet, request);
    }

    /**
     * Build a signed jwt token from authorization request message context
     *
     * @param request Oauth authorization message context
     * @return Signed jwt string
     * @throws IdentityOAuth2Exception
     */
    protected String buildIDToken(OAuthAuthzReqMessageContext request)
            throws IdentityOAuth2Exception {

        String issuer = OAuth2Util.getIDTokenIssuer();
        long lifetimeInMillis = OAuthServerConfiguration.getInstance().
                getApplicationAccessTokenValidityPeriodInSeconds() * 1000;
        long curTimeInMillis = Calendar.getInstance().getTimeInMillis();
        OAuth2AuthorizeReqDTO dto = request.getAuthorizationReqDTO();

        SubjectTriple triple = parseSubjectId(dto.getUser().getAuthenticatedSubjectIdentifier());

        String userId = null;
        try {
            userId = CarbonContext.getThreadLocalCarbonContext().getUserRealm().getUserStoreManager()
                    .getUserClaimValue(triple.username, Constants.LOCAL_CLAIM__UserID, triple.profile);
        } catch (UserStoreException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        String consumerKey = dto.getConsumerKey();
        JWTClaimsSet jwtClaimsSet = new JWTClaimsSet();
        jwtClaimsSet.setIssuer(issuer);
        jwtClaimsSet.setSubject(userId);
        jwtClaimsSet.setAudience(Arrays.asList(consumerKey));
        jwtClaimsSet.setClaim(Constants.AUTHORIZATION_PARTY,consumerKey);
        jwtClaimsSet.setExpirationTime(new Date(curTimeInMillis + lifetimeInMillis));
        jwtClaimsSet.setIssueTime(new Date(curTimeInMillis));

        if (JWSAlgorithm.NONE.getName().equals(signatureAlgorithm.getName())) {
            return new PlainJWT(jwtClaimsSet).serialize();
        }
        return signJWT(jwtClaimsSet, request);
    }

the imports

import com.nimbusds.jose.Algorithm;
import com.nimbusds.jose.JOSEException;
import com.nimbusds.jose.JWSAlgorithm;
import com.nimbusds.jose.JWSHeader;
import com.nimbusds.jose.JWSSigner;
import com.nimbusds.jose.crypto.RSASSASigner;
import com.nimbusds.jwt.JWTClaimsSet;
import com.nimbusds.jwt.PlainJWT;
import com.nimbusds.jwt.SignedJWT;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.oltu.oauth2.common.exception.OAuthSystemException;
import org.wso2.carbon.base.MultitenantConstants;
import org.wso2.carbon.context.CarbonContext;
import org.wso2.carbon.core.util.KeyStoreManager;
import org.wso2.carbon.identity.core.util.IdentityTenantUtil;
import org.wso2.carbon.identity.oauth.config.OAuthServerConfiguration;
import org.wso2.carbon.identity.oauth2.IdentityOAuth2Exception;
import org.wso2.carbon.identity.oauth2.authz.OAuthAuthzReqMessageContext;
import org.wso2.carbon.identity.oauth2.dto.OAuth2AuthorizeReqDTO;
import org.wso2.carbon.identity.oauth2.token.OAuthTokenReqMessageContext;
import org.wso2.carbon.identity.oauth2.token.OauthTokenIssuerImpl;
import org.wso2.carbon.identity.oauth2.util.OAuth2Util;
import org.wso2.carbon.user.api.UserStoreException;

import java.security.Key;
import java.security.interfaces.RSAPrivateKey;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Date;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;