com.digitalpetri.opcua.stack.client.fsm.states.Idle Maven / Gradle / Ivy

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/*
 * Copyright 2015 Kevin Herron
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.digitalpetri.opcua.stack.client.fsm.states;

import java.util.concurrent.CompletableFuture;

import com.digitalpetri.opcua.stack.client.fsm.ConnectionEvent;
import com.digitalpetri.opcua.stack.client.fsm.ConnectionState;
import com.digitalpetri.opcua.stack.client.fsm.ConnectionStateFsm;
import com.digitalpetri.opcua.stack.core.channel.ClientSecureChannel;

public class Idle implements ConnectionState {

    private final CompletableFuture channelFuture = new CompletableFuture<>();

    @Override
    public CompletableFuture activate(ConnectionEvent event, ConnectionStateFsm fsm) {
        return CF_VOID_COMPLETED;
    }

    @Override
    public CompletableFuture deactivate(ConnectionEvent event, ConnectionStateFsm fsm) {
        return CF_VOID_COMPLETED;
    }

    @Override
    public ConnectionState transition(ConnectionEvent event, ConnectionStateFsm fsm) {
        switch (event) {
            case ConnectRequested:
                return new Connecting(channelFuture);
        }

        return this;
    }

    @Override
    public CompletableFuture getSecureChannel() {
        return channelFuture;
    }

    @Override
    public String toString() {
        return "Idle{}";
    }

}