Is it possible to generate multiple valid access tokens using the client_credentials or password grant type per request?

Generating a token using the above grant types only gives a new token when the current one expires per request.

I can use the password grant type to generate a refresh token and then generate multiple access tokens, but doing that will invalidate any previous access tokens.

Any idea how i could change to allow an access token to be generated per request to the /oauth/token endpoint and insure that any previous tokens are not invalidated?

Below is the XML configuration of my oauth server.

<!-- oauth2 config start-->
  <sec:http pattern="/test/oauth/token" create-session="never"
              authentication-manager-ref="authenticationManager" > 
        <sec:intercept-url pattern="/test/oauth/token" access="IS_AUTHENTICATED_FULLY" />
        <sec:anonymous enabled="false" />
        <sec:http-basic entry-point-ref="clientAuthenticationEntryPoint"/>
        <sec:custom-filter ref="clientCredentialsTokenEndpointFilter" before="BASIC_AUTH_FILTER" /> 
        <sec:access-denied-handler ref="oauthAccessDeniedHandler" /> 
    </sec:http>


    <bean id="clientCredentialsTokenEndpointFilter"
          class="org.springframework.security.oauth2.provider.client.ClientCredentialsTokenEndpointFilter">
        <property name="authenticationManager" ref="authenticationManager" />
    </bean>

    <sec:authentication-manager alias="authenticationManager">
        <sec:authentication-provider user-service-ref="clientDetailsUserService" />
    </sec:authentication-manager>

    <bean id="clientDetailsUserService"
          class="org.springframework.security.oauth2.provider.client.ClientDetailsUserDetailsService">
        <constructor-arg ref="clientDetails" />
    </bean>

    <bean id="clientDetails" class="org.security.oauth2.ClientDetailsServiceImpl"></bean>

    <bean id="clientAuthenticationEntryPoint"
          class="org.springframework.security.oauth2.provider.error.OAuth2AuthenticationEntryPoint">
        <property name="realmName" value="springsec/client" />
        <property name="typeName" value="Basic" />
    </bean>

    <bean id="oauthAccessDeniedHandler"
          class="org.springframework.security.oauth2.provider.error.OAuth2AccessDeniedHandler"/>

    <oauth:authorization-server
        client-details-service-ref="clientDetails" token-services-ref="tokenServices">
        <oauth:authorization-code />
        <oauth:implicit/>
        <oauth:refresh-token/>
        <oauth:client-credentials />
        <oauth:password authentication-manager-ref="userAuthenticationManager"/>
    </oauth:authorization-server>

    <sec:authentication-manager id="userAuthenticationManager">
        <sec:authentication-provider  ref="customUserAuthenticationProvider">
        </sec:authentication-provider>
    </sec:authentication-manager>

    <bean id="customUserAuthenticationProvider"
          class="org.security.oauth2.CustomUserAuthenticationProvider">
    </bean>

    <bean id="tokenServices" 
          class="org.springframework.security.oauth2.provider.token.DefaultTokenServices">
        <property name="tokenStore" ref="tokenStore" />
        <property name="supportRefreshToken" value="true" />
        <property name="accessTokenValiditySeconds" value="300"></property>
        <property name="clientDetailsService" ref="clientDetails" />
    </bean>

    <bean id="tokenStore" class="org.springframework.security.oauth2.provider.token.store.JdbcTokenStore">
        <constructor-arg ref="jdbcTemplate" />
    </bean>

    <bean id="jdbcTemplate"
           class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/oauthdb"/>
        <property name="username" value="root"/>
        <property name="password" value="password"/>
    </bean>
    <bean id="oauthAuthenticationEntryPoint"
          class="org.springframework.security.oauth2.provider.error.OAuth2AuthenticationEntryPoint">
    </bean>

Updated on 21/11/2014

When I double check, I found that InMemoryTokenStore use a OAuth2Authentication's hash string as key of serveral Map. And when I use same username, client_id, scope.. and I got same key. So this may leading to some problem. So I think the old way are deprecated. The following is what I did to avoid the problem.

Create another AuthenticationKeyGenerator that can calculate unique key, called UniqueAuthenticationKeyGenerator

/*
 * Copyright 2006-2011 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 */

/**
 * Basic key generator taking into account the client id, scope, resource ids and username (principal name) if they
 * exist.
 * 
 * @author Dave Syer
 * @author thanh
 */
public class UniqueAuthenticationKeyGenerator implements AuthenticationKeyGenerator {

    private static final String CLIENT_ID = "client_id";

    private static final String SCOPE = "scope";

    private static final String USERNAME = "username";

    private static final String UUID_KEY = "uuid";

    public String extractKey(OAuth2Authentication authentication) {
        Map<String, String> values = new LinkedHashMap<String, String>();
        OAuth2Request authorizationRequest = authentication.getOAuth2Request();
        if (!authentication.isClientOnly()) {
            values.put(USERNAME, authentication.getName());
        }
        values.put(CLIENT_ID, authorizationRequest.getClientId());
        if (authorizationRequest.getScope() != null) {
            values.put(SCOPE, OAuth2Utils.formatParameterList(authorizationRequest.getScope()));
        }
        Map<String, Serializable> extentions = authorizationRequest.getExtensions();
        String uuid = null;
        if (extentions == null) {
            extentions = new HashMap<String, Serializable>(1);
            uuid = UUID.randomUUID().toString();
            extentions.put(UUID_KEY, uuid);
        } else {
            uuid = (String) extentions.get(UUID_KEY);
            if (uuid == null) {
                uuid = UUID.randomUUID().toString();
                extentions.put(UUID_KEY, uuid);
            }
        }
        values.put(UUID_KEY, uuid);

        MessageDigest digest;
        try {
            digest = MessageDigest.getInstance("MD5");
        }
        catch (NoSuchAlgorithmException e) {
            throw new IllegalStateException("MD5 algorithm not available.  Fatal (should be in the JDK).");
        }

        try {
            byte[] bytes = digest.digest(values.toString().getBytes("UTF-8"));
            return String.format("%032x", new BigInteger(1, bytes));
        }
        catch (UnsupportedEncodingException e) {
            throw new IllegalStateException("UTF-8 encoding not available.  Fatal (should be in the JDK).");
        }
    }
}

Finally, wire them up

<bean id="tokenStore" class="org.springframework.security.oauth2.provider.token.store.JdbcTokenStore">
    <constructor-arg ref="jdbcTemplate" />
    <property name="authenticationKeyGenerator">
        <bean class="your.package.UniqueAuthenticationKeyGenerator" />
    </property>
</bean>

Below way may leading to some problem, see updated answer!!!

You are using DefaultTokenServices. Try this code and make sure to re-define your `tokenServices` package com.thanh.backend.oauth2.core; import java.util.Date; import java.util.UUID; import org.springframework.security.core.AuthenticationException; import org.springframework.security.oauth2.common.DefaultExpiringOAuth2RefreshToken; import org.springframework.security.oauth2.common.DefaultOAuth2AccessToken; import org.springframework.security.oauth2.common.ExpiringOAuth2RefreshToken; import org.springframework.security.oauth2.common.OAuth2AccessToken; import org.springframework.security.oauth2.common.OAuth2RefreshToken; import org.springframework.security.oauth2.provider.OAuth2Authentication; import org.springframework.security.oauth2.provider.token.DefaultTokenServices; import org.springframework.security.oauth2.provider.token.TokenEnhancer; import org.springframework.security.oauth2.provider.token.TokenStore; /** * @author thanh */ public class SimpleTokenService extends DefaultTokenServices { private TokenStore tokenStore; private TokenEnhancer accessTokenEnhancer; @Override public OAuth2AccessToken createAccessToken(OAuth2Authentication authentication) throws AuthenticationException { OAuth2RefreshToken refreshToken = createRefreshToken(authentication);; OAuth2AccessToken accessToken = createAccessToken(authentication, refreshToken); tokenStore.storeAccessToken(accessToken, authentication); tokenStore.storeRefreshToken(refreshToken, authentication); return accessToken; } private OAuth2AccessToken createAccessToken(OAuth2Authentication authentication, OAuth2RefreshToken refreshToken) { DefaultOAuth2AccessToken token = new DefaultOAuth2AccessToken(UUID.randomUUID().toString()); int validitySeconds = getAccessTokenValiditySeconds(authentication.getOAuth2Request()); if (validitySeconds > 0) { token.setExpiration(new Date(System.currentTimeMillis() + (validitySeconds * 1000L))); } token.setRefreshToken(refreshToken); token.setScope(authentication.getOAuth2Request().getScope()); return accessTokenEnhancer != null ? accessTokenEnhancer.enhance(token, authentication) : token; } private ExpiringOAuth2RefreshToken createRefreshToken(OAuth2Authentication authentication) { if (!isSupportRefreshToken(authentication.getOAuth2Request())) { return null; } int validitySeconds = getRefreshTokenValiditySeconds(authentication.getOAuth2Request()); ExpiringOAuth2RefreshToken refreshToken = new DefaultExpiringOAuth2RefreshToken(UUID.randomUUID().toString(), new Date(System.currentTimeMillis() + (validitySeconds * 1000L))); return refreshToken; } @Override public void setTokenEnhancer(TokenEnhancer accessTokenEnhancer) { super.setTokenEnhancer(accessTokenEnhancer); this.accessTokenEnhancer = accessTokenEnhancer; } @Override public void setTokenStore(TokenStore tokenStore) { super.setTokenStore(tokenStore); this.tokenStore = tokenStore; } }