PeerCredentials Class — netty Architecture

Source Code

transport-native-unix-common/src/main/java/io/netty/channel/unix/PeerCredentials.java lines 30–74

@UnstableApi
public final class PeerCredentials {
    private final int pid;
    private final int uid;
    private final int[] gids;

    // These values are set by JNI via Socket.peerCredentials()
    PeerCredentials(int p, int u, int... gids) {
        pid = p;
        uid = u;
        this.gids = gids == null ? EMPTY_INTS : gids;
    }

    /**
     * Get the PID of the peer process.
     * <p>
     * This is currently not populated on MacOS and BSD based systems.
     * @return The PID of the peer process.
     */
    public int pid() {
        return pid;
    }

    public int uid() {
        return uid;
    }

    public int[] gids() {
        return gids.clone();
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder(128);
        sb.append("UserCredentials[pid=").append(pid).append("; uid=").append(uid).append("; gids=[");
        if (gids.length > 0) {
            sb.append(gids[0]);
            for (int i = 1; i < gids.length; ++i) {
                sb.append(", ").append(gids[i]);
            }
        }
        sb.append(']');
        return sb.toString();
    }
}