ru.mystamps.web.support.spring.security.SecurityContextUtils.java Source code

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Here is the source code for ru.mystamps.web.support.spring.security.SecurityContextUtils.java

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/*
 * Copyright (C) 2009-2017 Slava Semushin <slava.semushin@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
package ru.mystamps.web.support.spring.security;

import java.util.Collections;
import java.util.Optional;

import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.context.SecurityContextHolder;

public final class SecurityContextUtils {

    private SecurityContextUtils() {
    }

    /**
     * @author Sergey Chechenev
     */
    public static boolean hasAuthority(GrantedAuthority authority) {
        return Optional.ofNullable(SecurityContextHolder.getContext().getAuthentication())
                .map(Authentication::getAuthorities).orElse(Collections.emptyList()).contains(authority);
    }

    /**
     * @author Sergey Chechenev
     * @author Slava Semushin
     */
    public static Integer getUserId() {
        return Optional.ofNullable(SecurityContextHolder.getContext().getAuthentication())
                .map(Authentication::getPrincipal).filter(CustomUserDetails.class::isInstance)
                .map(CustomUserDetails.class::cast).map(CustomUserDetails::getUserId).orElse(null);
    }

}