com.vmware.photon.controller.clustermanager.templates.KubernetesMasterNodeTemplate.java Source code

Introduction

Here is the source code for com.vmware.photon.controller.clustermanager.templates.KubernetesMasterNodeTemplate.java

Source

/*
 * Copyright 2015 VMware, Inc. All Rights Reserved.
 *
 * 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.vmware.photon.controller.clustermanager.templates;

import com.vmware.photon.controller.clustermanager.servicedocuments.ClusterManagerConstants;
import com.vmware.photon.controller.clustermanager.servicedocuments.FileTemplate;

import com.google.common.base.Preconditions;
import org.apache.commons.net.util.SubnetUtils;

import java.nio.file.Paths;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * Defines the template for Kubernetes Master Nodes.
 */
public class KubernetesMasterNodeTemplate implements NodeTemplate {

    public static final String MASTER_USER_DATA_TEMPLATE = "kubernetes-master-user-data.template";
    public static final String ETCD_IPS_PROPERTY = "etcdIps";
    public static final String DNS_PROPERTY = "dns";
    public static final String GATEWAY_PROPERTY = "gateway";
    public static final String MASTER_IP_PROPERTY = "masterIp";
    public static final String NETMASK_PROPERTY = "netmask";
    public static final String CONTAINER_NETWORK_PROPERTY = "containerNetwork";
    public static final String VM_NAME_PREFIX = "master";

    public String getVmName(Map<String, String> properties) {
        Preconditions.checkNotNull(properties, "properties cannot be null");

        String hostId = properties.get(NodeTemplateUtils.HOST_ID_PROPERTY);
        return NodeTemplateUtils.generateHostName(VM_NAME_PREFIX, hostId);
    }

    public FileTemplate createUserDataTemplate(String scriptDirectory, Map<String, String> properties) {
        Preconditions.checkNotNull(scriptDirectory, "scriptDirectory cannot be null");
        Preconditions.checkNotNull(properties, "properties cannot be null");

        List<String> etcdIps = NodeTemplateUtils.deserializeAddressList(properties.get(ETCD_IPS_PROPERTY));
        String ipAddress = properties.get(MASTER_IP_PROPERTY);
        String netmask = properties.get(NETMASK_PROPERTY);
        String cidrSignature = new SubnetUtils(ipAddress, netmask).getInfo().getCidrSignature();

        Map<String, String> parameters = new HashMap<>();
        parameters.put("$ETCD_QUORUM", NodeTemplateUtils.createEtcdQuorumString(etcdIps));
        parameters.put("$DNS", "DNS=" + properties.get(DNS_PROPERTY));
        parameters.put("$GATEWAY", properties.get(GATEWAY_PROPERTY));
        parameters.put("$ADDRESS", cidrSignature);
        parameters.put("$CONTAINER_NETWORK", properties.get(CONTAINER_NETWORK_PROPERTY));
        parameters.put("$KUBERNETES_PORT", String.valueOf(ClusterManagerConstants.Kubernetes.API_PORT));
        parameters.put("$LOCAL_HOSTNAME", getVmName(properties));

        FileTemplate template = new FileTemplate();
        template.filePath = Paths.get(scriptDirectory, MASTER_USER_DATA_TEMPLATE).toString();
        template.parameters = parameters;
        return template;
    }

    public FileTemplate createMetaDataTemplate(String scriptDirectory, Map<String, String> properties) {
        Preconditions.checkNotNull(scriptDirectory, "scriptDirectory cannot be null");
        Preconditions.checkNotNull(properties, "properties cannot be null");

        return NodeTemplateUtils.createMetaDataTemplate(scriptDirectory, getVmName(properties));
    }

    public static Map<String, String> createProperties(List<String> etcdAddresses, String dns, String gateway,
            String netmask, String masterIp, String containerNetwork) {
        Preconditions.checkNotNull(etcdAddresses, "etcdAddresses cannot be null");
        Preconditions.checkArgument(etcdAddresses.size() > 0, "etcdAddresses should contain at least one address");
        Preconditions.checkNotNull(dns, "dns cannot be null");
        Preconditions.checkNotNull(gateway, "gateway cannot be null");
        Preconditions.checkNotNull(masterIp, "masterIp cannot be null");
        Preconditions.checkNotNull(netmask, "netmask cannot be null");
        Preconditions.checkNotNull(containerNetwork, "containerNetwork cannot be null");

        Map<String, String> properties = new HashMap<>();
        properties.put(ETCD_IPS_PROPERTY, NodeTemplateUtils.serializeAddressList(etcdAddresses));
        properties.put(DNS_PROPERTY, dns);
        properties.put(GATEWAY_PROPERTY, gateway);
        properties.put(MASTER_IP_PROPERTY, masterIp);
        properties.put(NETMASK_PROPERTY, netmask);
        properties.put(CONTAINER_NETWORK_PROPERTY, containerNetwork);

        return properties;
    }
}