Adding more then one client to the Spring OAuth2 Auth Server

Question

I have Spring OAuth Authorization server and I want to add support for more then one client(id). I configured clients like this:

clients
            .inMemory().         


        

Answer 1

For inMemorybuilder with configuration (you will have to define your own configuration):

 @Override
    public void configure ( ClientDetailsServiceConfigurer clients ) throws Exception {
        // @formatter:off
        InMemoryClientDetailsServiceBuilder inMemoryBuilder = clients.inMemory ();
        for (String clientKey: authServerProperties.getClient ().keySet ()) {
            OAuthClientProperties client = authServerProperties.getClient ().get ( clientKey );
            inMemoryBuilder
                .withClient ( client.getClientId () )
                .secret ( client.getClientSecret () )
                .scopes ( client.getScopes () == null ? new String[] {"openid"} : client.getScopes () )
                .authorizedGrantTypes ( client.getAuthorizedGrandTypes () == null ? "client_credentials" : client.getAuthorizedGrandTypes () );
        }

        // @formatter:on
    }

with two additional classes:

@ConfigurationProperties ( prefix = "my-authorization-server" )
public class AuthServerProperties 

    private final Map<String, OAuthClientProperties> client = new HashMap<> ();

    ...

    public Map<String, OAuthClientProperties> getClient () {
        return client;
    }

    ...

}


public class OAuthClientProperties {

    private String clientId;

    private String clientSecret;

    private String[] scopes;

    private String authorizedGrandTypes;

    public String getClientId () {
        return clientId;
    }

    public void setClientId ( String clientId ) {
        this.clientId = clientId;
    }

    public String getClientSecret () {
        return clientSecret;
    }

    public void setClientSecret ( String clientSecret ) {
        this.clientSecret = clientSecret;
    }

    public String[] getScopes () {
        return scopes;
    }

    public void setScopes ( String[]  scopes ) {
        this.scopes = scopes;
    }

    public String getAuthorizedGrandTypes () {
        return authorizedGrandTypes;
    }

    public void setAuthorizedGrandTypes ( String authorizedGrandTypes ) {
        this.authorizedGrandTypes = authorizedGrandTypes;
    }

}

and finally, in properties you would have something like this:

my-authorization-server.client.foo.client-id=foo-client
my-authorization-server.client.foo.client-secret=foo-client-supersecret
my-authorization-server.client.foo.scopes=read

my-authorization-server.client.bar.client-id=bar-client
my-authorization-server.client.bar.client-secret=bar-client-verysupersecret
my-authorization-server.client.bar.scopes=read,write

Answer 2

Do not use multiple inMemory builders, instead concatenate multiple withClients inside one inMemory:

@Override
public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
    clients.inMemory()
                .withClient("first")
                .secret("secret")
                .scopes("read")
                .authorizedGrantTypes("password")
            .and()
                .withClient("sec")
                .secret("secret")
                .scopes("read")
                .authorizedGrantTypes("password");
}