net.wouterdanes.docker.provider.LocalDockerProvider Maven / Gradle / Ivy

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/*
    Copyright 2014 Wouter Danes

    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 net.wouterdanes.docker.provider;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import net.wouterdanes.docker.provider.model.ContainerStartConfiguration;
import net.wouterdanes.docker.provider.model.ExposedPort;
import net.wouterdanes.docker.remoteapi.model.ContainerInspectionResult;
import net.wouterdanes.docker.remoteapi.model.ContainerStartRequest;

/**
 * A Docker provider for the remote http api on a locally running docker.
 * This provider won't publish ports to the host, but will give host + port combinations directly to the container.
 * You should only use this provider if you can directly access the created containers via their IP address on the
 * docker host.
 */
public class LocalDockerProvider extends RemoteApiBasedDockerProvider {

    private static final Pattern TCP_PORT_MATCHER = Pattern.compile("([0-9]+)/tcp");

    public LocalDockerProvider() {
        super();
    }

    @Override
    public String startContainer(final ContainerStartConfiguration configuration) {
        return super.startContainer(configuration, new ContainerStartRequest());
    }

    @Override
    public List getExposedPorts(final String containerId) {
        ContainerInspectionResult containerInspectionResult = getContainersService().inspectContainer(containerId);
        if (containerInspectionResult.getNetworkSettings().getPorts().isEmpty()) {
            return Collections.emptyList();
        }
        Set ports = containerInspectionResult.getConfig().getExposedPorts().keySet();
        String containerIp = containerInspectionResult.getNetworkSettings().getIpAddress();
        List exposedPorts = new ArrayList<>(ports.size());
        for (String port : ports) {
            Matcher matcher = TCP_PORT_MATCHER.matcher(port);
            if (matcher.matches()) {
                int tcpPort = Integer.parseInt(matcher.group(1));
                exposedPorts.add(new ExposedPort(port, tcpPort, containerIp));
            }
        }
        return exposedPorts;
    }
}