VmExpungeRootVolumeFlow.java example

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zstack-master
package org.zstack.compute.vm;

import org.springframework.beans.factory.annotation.Autowire;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Configurable;
import org.zstack.core.cloudbus.CloudBus;
import org.zstack.core.cloudbus.CloudBusCallBack;
import org.zstack.header.core.workflow.FlowTrigger;
import org.zstack.header.core.workflow.NoRollbackFlow;
import org.zstack.header.message.MessageReply;
import org.zstack.header.vm.VmInstanceConstant;
import org.zstack.header.vm.VmInstanceSpec;
import org.zstack.header.volume.ExpungeVolumeMsg;
import org.zstack.header.volume.VolumeConstant;
import org.zstack.utils.Utils;
import org.zstack.utils.logging.CLogger;

import java.util.Map;

/**
 * Created by frank on 11/27/2015.
 */
@Configurable(preConstruction = true, autowire = Autowire.BY_TYPE)
public class VmExpungeRootVolumeFlow extends NoRollbackFlow {
    private static final CLogger logger = Utils.getLogger(VmExpungeRootVolumeFlow.class);

    @Autowired
    protected CloudBus bus;

    @Override
    public void run(FlowTrigger trigger, Map data) {
        final VmInstanceSpec spec = (VmInstanceSpec) data.get(VmInstanceConstant.Params.VmInstanceSpec.toString());
        if (spec.getVmInventory().getRootVolumeUuid() == null) {
            // the vm is in an intermediate state that has no root volume
            trigger.next();
            return;
        }

        new VmExpungeRootVolumeValidator().validate(spec.getVmInventory().getUuid(), spec.getVmInventory().getRootVolumeUuid());

        ExpungeVolumeMsg msg = new ExpungeVolumeMsg();
        msg.setVolumeUuid(spec.getVmInventory().getRootVolumeUuid());
        bus.makeTargetServiceIdByResourceUuid(msg, VolumeConstant.SERVICE_ID, msg.getVolumeUuid());
        bus.send(msg, new CloudBusCallBack(trigger) {
            @Override
            public void run(MessageReply reply) {
                if (!reply.isSuccess()) {
                    logger.warn(String.format("failed to expunge the root volume[uuid:%s] of the vm[uuid:%s, name:%s], %s",
                            spec.getVmInventory().getRootVolumeUuid(), spec.getVmInventory().getUuid(),
                            spec.getVmInventory().getName(), reply.getError()));
                    trigger.fail(reply.getError());

                    return;
                }

                trigger.next();
            }
        });
    }
}