Buddypress record custom post type to activity stream

<?php

function custom_record_activity( $post_id, $post, $user_id = false ) {

    global $bp, $wpdb;

    //check for multisite install
    if(!is_multisite()) return false;

    $post_id = (int)$post_id;
    $blog_id = (int)$wpdb->blogid;

    if ( !$user_id )
        $user_id = (int)$post->post_author;

    /* This is to stop infinite loops with Donncha's sitewide tags plugin */
    if ( (int)$bp->site_options['tags_blog_id'] == (int)$blog_id ) return false;

    /* Don't record this if it's a regular post */
    if ( $post->post_type == 'post' ) return false;

    if ( ( 'publish' == $post->post_status ) && ( '' == $post->post_password ) ) {

        if ( (int)get_blog_option( $blog_id, 'blog_public' ) || !bp_core_is_multisite() ) {

            /* Record this in activity streams */
            $post_permalink = get_permalink( $post_id );

            $activity_action = sprintf( __( '%1$s wrote a new post, %2$s, on the site %3$s', 'buddypress' ), bp_core_get_userlink( (int)$post->post_author ), '<a href="' . $post_permalink . '">' . $post->post_title . '</a>', get_blog_option($blog_id, 'blogname') );
            $activity_content = $post->post_content;

            bp_blogs_record_activity( array(
                'user_id' => (int)$post->post_author,
                'action' => apply_filters( 'bp_blogs_activity_new_post_action', $activity_action, &$post, $post_permalink ),
                'content' => apply_filters( 'bp_blogs_activity_new_post_content', $activity_content, &$post, $post_permalink ),
                'primary_link' => apply_filters( 'bp_blogs_activity_new_post_primary_link', $post_permalink, $post_id ),
                'type' => 'new_blog_post',
                'item_id' => $blog_id,
                'secondary_item_id' => $post_id,
                'recorded_time' => $post->post_date_gmt
            ));
        }
    } else
        bp_blogs_remove_post( $post_id, $blog_id );

    bp_blogs_update_blogmeta( $blog_id, 'last_activity', bp_core_current_time() );

    do_action( 'bp_blogs_new_blog_post', $post_id, $post, $user_id );
}

add_action( 'save_post', 'custom_record_activity', 10, 2 );