plugins/network-elements/nicira-nvp/src/main/java/com/cloud/network/resource/wrapper/NiciraNvpFindLogicalRouterPortCommandWrapper.java

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// to you under the Apache License, Version 2.0 (the
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//   http://www.apache.org/licenses/LICENSE-2.0
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package com.cloud.network.resource.wrapper;

import static com.cloud.network.resource.NiciraNvpResource.NUM_RETRIES;

import java.util.List;


import com.cloud.agent.api.Answer;
import com.cloud.agent.api.FindLogicalRouterPortAnswer;
import com.cloud.agent.api.FindLogicalRouterPortCommand;
import com.cloud.network.nicira.LogicalRouterPort;
import com.cloud.network.nicira.NiciraNvpApi;
import com.cloud.network.nicira.NiciraNvpApiException;
import com.cloud.network.resource.NiciraNvpResource;
import com.cloud.network.utils.CommandRetryUtility;
import com.cloud.resource.CommandWrapper;
import com.cloud.resource.ResourceWrapper;

@ResourceWrapper(handles =  FindLogicalRouterPortCommand.class)
public class NiciraNvpFindLogicalRouterPortCommandWrapper extends CommandWrapper<FindLogicalRouterPortCommand, Answer, NiciraNvpResource> {


    @Override
    public Answer execute(FindLogicalRouterPortCommand command, NiciraNvpResource niciraNvpResource) {
        final String logicalRouterUuid = command.getLogicalRouterUuid();
        final String attachmentLswitchUuid = command.getAttachmentLswitchUuid();
        final NiciraNvpApi niciraNvpApi = niciraNvpResource.getNiciraNvpApi();

        logger.debug("Finding Logical Router Port in Logical Router " + logicalRouterUuid + " and attachmentLSwitchUuid " + attachmentLswitchUuid);

        try{
            List<LogicalRouterPort> lRouterPorts = niciraNvpApi.findLogicalRouterPortByAttachmentLSwitchUuid(logicalRouterUuid, attachmentLswitchUuid);
            if (lRouterPorts.size() == 0) {
                return new FindLogicalRouterPortAnswer(command, false, "Logical Router Port not found", null);
            } else {
                return new FindLogicalRouterPortAnswer(command, true, "Logical Router Port found", lRouterPorts.get(0).getUuid());
            }
        }
        catch (NiciraNvpApiException e){
            logger.error("Error finding Logical Router Port due to: " + e.getMessage());
            final CommandRetryUtility retryUtility = niciraNvpResource.getRetryUtility();
            retryUtility.addRetry(command, NUM_RETRIES);
            return retryUtility.retry(command, FindLogicalRouterPortAnswer.class, e);
        }
    }

}