net.oneandone.stool.client.OpenShift Maven / Gradle / Ivy

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Stool client to control the server from the command line and build images (on the server, without local docker).
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/*
 * Copyright 1&1 Internet AG, https://github.com/1and1/
 *
 * 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.oneandone.stool.client;

import io.fabric8.kubernetes.client.Config;
import io.fabric8.kubernetes.client.ConfigBuilder;
import io.fabric8.kubernetes.client.LocalPortForward;
import io.fabric8.kubernetes.client.dsl.ExecListener;
import io.fabric8.kubernetes.client.dsl.ExecWatch;
import io.fabric8.openshift.client.DefaultOpenShiftClient;
import io.fabric8.openshift.client.OpenShiftClient;
import okhttp3.Response;

import java.util.ArrayList;
import java.util.List;


public class OpenShift implements AutoCloseable {
    private final OpenShiftClient client;
    private final String namespace;

    public static OpenShift create(PodConfig config) {
        return create(config.server, config.namespace, config.token);
    }

    public static OpenShift create(String masterUrl, String namespace, String token) {
        Config config;
        String old;

        // TODO: not thread safe ...
        old = System.getProperty(Config.KUBERNETES_DISABLE_AUTO_CONFIG_SYSTEM_PROPERTY);
        System.setProperty(Config.KUBERNETES_DISABLE_AUTO_CONFIG_SYSTEM_PROPERTY, "true");
        config = new ConfigBuilder().withMasterUrl(masterUrl).withTrustCerts(true).withNamespace(namespace).withOauthToken(token).build();
        if (old == null) {
            System.getProperties().remove(Config.KUBERNETES_DISABLE_AUTO_CONFIG_SYSTEM_PROPERTY);
        } else {
            System.setProperty(Config.KUBERNETES_DISABLE_AUTO_CONFIG_SYSTEM_PROPERTY, old);
        }

        return new OpenShift(new DefaultOpenShiftClient(config));
    }

    public static OpenShift create() {
        return new OpenShift(new DefaultOpenShiftClient());
    }

    private OpenShift(OpenShiftClient client) {
        this.client = client;
        this.namespace = client.getNamespace();
    }

    @Override
    public void close() {
        client.close();
    }

    public LocalPortForward portForward(String pod, int localPort, int podPort) {
        return client.pods().inNamespace(namespace).withName(pod).portForward(podPort, localPort);
    }

    public ExecWatch ssh(String pod, String container, String[] command, ExecListener listener) {
        return client.pods().inNamespace(namespace).withName(pod).inContainer(container)
                .readingInput(System.in)
                .writingOutput(System.out)
                .writingError(System.err)
                .withTTY()
                .usingListener(listener)
                .exec(command);
    }

    public static class StoolExecListener implements ExecListener {
        public Response openResponse;
        public List failures;
        public Integer closeCode;
        public String closeReason;

        public StoolExecListener() {
            this.openResponse = null;
            this.failures = new ArrayList<>();
            this.closeCode = null;
            this.closeReason = null;
        }

        @Override
        public void onOpen(Response response) {
            if (openResponse != null) {
                throw new IllegalStateException(response + " vs " + openResponse);
            }
            openResponse = response;
        }

        @Override
        public void onFailure(Throwable t, Response response) {
            failures.add(t);
        }

        @Override
        public void onClose(int code, String reason) {
            if (closeCode != null) {
                throw new IllegalStateException(code + " vs " + closeCode);
            }
            closeCode = code;
            closeReason = reason;
        }
    }
}