Examples with AppContext.getSecurityContext com.haulmont.cuba.core.sys.AppContext.getSecurityContext used on opensource projects

Example 1 with AppContext.getSecurityContext

use of com.haulmont.cuba.core.sys.AppContext.getSecurityContext in project cuba by cuba-platform.

the class Authentication method begin.

/**
 * Begin an authenticated code block.
 * <br>
 * If a valid current thread session exists, does nothing.
 * Otherwise sets the current thread session, logging in if necessary.
 * <br>
 * Subsequent {@link #end()} method must be called in "finally" section.
 *
 * @param login user login. If null, a value of {@code cuba.jmxUserLogin} app property is used.
 * @return new or cached instance of system user session
 */
public UserSession begin(@Nullable String login) {
    if (cleanupCounter.get() == null) {
        cleanupCounter.set(0);
    }
    // check if a current thread session exists, that is we got here from authenticated code
    SecurityContext securityContext = AppContext.getSecurityContext();
    if (securityContext != null) {
        UserSession userSession = userSessions.getAndRefresh(securityContext.getSessionId());
        if (userSession != null) {
            log.trace("Already authenticated, do nothing");
            cleanupCounter.set(cleanupCounter.get() + 1);
            if (log.isTraceEnabled()) {
                log.trace("New cleanup counter value: {}", cleanupCounter.get());
            }
            return userSession;
        }
    }
    // no current thread session or it is expired - need to authenticate
    if (StringUtils.isBlank(login)) {
        login = getSystemLogin();
    }
    UserSession session = null;
    log.trace("Authenticating as {}", login);
    UUID sessionId = sessions.get(login);
    if (sessionId != null) {
        session = userSessions.getAndRefresh(sessionId);
    }
    if (session == null) {
        // saved session doesn't exist or is expired
        synchronized (this) {
            // double check to prevent the same log in by subsequent threads
            sessionId = sessions.get(login);
            if (sessionId != null) {
                session = userSessions.get(sessionId);
            }
            if (session == null) {
                try {
                    session = authenticationManager.login(new SystemUserCredentials(login)).getSession();
                    session.setClientInfo("System authentication");
                } catch (LoginException e) {
                    throw new RuntimeException("Unable to perform system login", e);
                }
                sessions.put(login, session.getId());
            }
        }
    }
    AppContext.setSecurityContext(new SecurityContext(session));
    return session;
}