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Implements the Dasein Cloud API for Cloud.com Cloudstack-based public and private clouds.
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/**
 * Copyright (C) 2009-2015 Dell, Inc.
 *
 * ====================================================================
 * 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 org.dasein.cloud.cloudstack.identity;

import org.dasein.cloud.CloudException;
import org.dasein.cloud.InternalException;
import org.dasein.cloud.OperationNotSupportedException;
import org.dasein.cloud.ProviderContext;
import org.dasein.cloud.Requirement;
import org.dasein.cloud.cloudstack.CSCloud;
import org.dasein.cloud.cloudstack.CSMethod;
import org.dasein.cloud.cloudstack.Param;
import org.dasein.cloud.identity.SSHKeypair;
import org.dasein.cloud.identity.ServiceAction;
import org.dasein.cloud.identity.ShellKeyCapabilities;
import org.dasein.cloud.identity.ShellKeySupport;
import org.dasein.cloud.util.APITrace;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Locale;

/**
 * Implements the CSCloud 3.0 SSH keypair support
 * @author George Reese
 * @since 2012.02
 * @version 2012.02
 */
public class Keypair implements ShellKeySupport {
    private CSCloud provider;
    private transient volatile KeypairCapabilities capabilities;

    Keypair(@Nonnull CSCloud provider) { this.provider = provider; }

    @Override
    public @Nonnull SSHKeypair createKeypair(@Nonnull String name) throws InternalException, CloudException {
        APITrace.begin(provider, "Keypair.createKeypair");
        try {
            ProviderContext ctx = provider.getContext();

            if( ctx == null ) {
                throw new CloudException("No context was set for this request");
            }
            CSMethod method = new CSMethod(provider);
            Document doc = method.get(method.buildUrl(CSMethod.CREATE_KEYPAIR, new Param("name", name)), CSMethod.CREATE_KEYPAIR);
            NodeList matches = doc.getElementsByTagName("keypair");

            for( int i=0; i list() throws InternalException, CloudException {
        APITrace.begin(provider, "Keypair.list");
        try {
            ProviderContext ctx = provider.getContext();

            if( ctx == null ) {
                throw new CloudException("No context was set for this request");
            }
            CSMethod method = new CSMethod(provider);
            Document doc = method.get(method.buildUrl(CSMethod.LIST_KEYPAIRS), CSMethod.LIST_KEYPAIRS);
            ArrayList keys = new ArrayList();

            int numPages = 1;
            NodeList nodes = doc.getElementsByTagName("count");
            Node n = nodes.item(0);
            if (n != null) {
                String value = n.getFirstChild().getNodeValue().trim();
                int count = Integer.parseInt(value);
                numPages = count/500;
                int remainder = count % 500;
                if (remainder > 0) {
                    numPages++;
                }
            }

            for (int page = 1; page <= numPages; page++) {
                if (page > 1) {
                    String nextPage = String.valueOf(page);
                    doc = method.get(method.buildUrl(CSMethod.LIST_KEYPAIRS, new Param("pagesize", "500"), new Param("page", nextPage)), CSMethod.LIST_KEYPAIRS);
                }
                NodeList matches = doc.getElementsByTagName("sshkeypair");

                for( int i=0; i