Java InstanceState.getName方法代码示例

import com.amazonaws.services.ec2.model.InstanceState; //导入方法依赖的package包/类
/**
 * Convert an {@link InstanceState} to a {@link MachineState}.
 *
 * @see com.google.common.base.Function#apply(java.lang.Object)
 */
@Override
public MachineState apply(InstanceState state) {
    switch (state.getName()) {
    case "pending":
        return MachineState.PENDING;
    case "running":
        return MachineState.RUNNING;
    case "shutting-down":
        return MachineState.TERMINATING;
    case "terminated":
        return MachineState.TERMINATED;
    case "stopping":
        return MachineState.TERMINATING;
    case "stopped":
        return MachineState.TERMINATED;
    default:
        throw new IllegalArgumentException(
                String.format("failed to translate unrecognized instance state '%s'", state.getName()));
    }
}
 

import com.amazonaws.services.ec2.model.InstanceState; //导入方法依赖的package包/类
private static LifecycleState ec2StateToLifecycleState(InstanceState state) {
    switch (state.getName()) {
    case "pending":
        return LifecycleState.Pending;
    case "running":
        return LifecycleState.InService;
    case "shutting-down":
        return LifecycleState.Terminating;
    case "terminated":
        return LifecycleState.Terminated;
    case "stopping":
        return LifecycleState.Terminating;
    case "stopped":
        return LifecycleState.Terminated;
    default:
        throw new IllegalArgumentException(String.format("unrecognized instance state: '%s'", state));
    }
}
 

import com.amazonaws.services.ec2.model.InstanceState; //导入方法依赖的package包/类
private MachineState getMachineState(Instance instance) {
    InstanceState state = instance.getState();
    String stateName = state.getName();

    if (stateName.equals("running")) {
        return STARTED;
    } else if (stateName.equals("pending")) {
        return STARTING;
    } else if (stateName.equals("shutting-down")) {
        return STOPPING;
    } else if (stateName.equals("terminated")) {
        return STOPPED;
    } else if (stateName.equals("stopped")) {
        return STARTED; // we dont need to create a new state as workflow dont support this
    } else {
        throw new IllegalStateException("State " + stateName + " is not known");
    }
}
 

import com.amazonaws.services.ec2.model.InstanceState; //导入方法依赖的package包/类
@Override
public void startInstance(String ec2InstanceId) throws InterruptedException {

	Instance instance = getSingleEc2InstanceById(ec2InstanceId);
	InstanceState state = instance.getState();

	// different possible states: pending, running, shutting-down,
	// terminated, stopping, stopped
	String stateName = state.getName();
	if (stateName.equalsIgnoreCase("pending")) {
		log.info("startInstance: instance with id= " + ec2InstanceId
				+ " state is pending, no action was taken.");
	} else if (stateName.equalsIgnoreCase("running")) {
		log.info("startInstance: instance with id= " + ec2InstanceId
				+ " state is running, no action was taken.");
	} else if (stateName.equalsIgnoreCase("shutting-down")) {
		log.info("startInstance: instance with id= " + ec2InstanceId
				+ " state is shutting-down, no action was taken.");

		// TODO maybe we should wait for the instance to shutdown before
		// starting it again.. ?
	} else if (stateName.equalsIgnoreCase("terminated")) {
		log.info("startInstance: instance with id= " + ec2InstanceId
				+ " state is terminated, no action was taken.");

		// TODO throw error ?
	} else if (stateName.equalsIgnoreCase("stopping")) {
		log.info("startInstance: instance with id= " + ec2InstanceId
				+ " state is stopping, no action was taken.");

		// TODO maybe we should wait for the instance to stop before
		// starting it again.. ? what is the difference between
		// shutting-down and stopping ??
	} else if (stateName.equalsIgnoreCase("stopped")) {
		log.info("startInstance: instance with id= "
				+ ec2InstanceId
				+ " state is stopped, the instance has been asked to start...");

		StartInstancesRequest startRequest = new StartInstancesRequest()
				.withInstanceIds(ec2InstanceId);
		StartInstancesResult startResult = config.getAmazonEC2Client()
				.startInstances(startRequest);
		List<InstanceStateChange> stateChangeList = startResult
				.getStartingInstances();

		waitForTransitionCompletion(stateChangeList, "running",
				ec2InstanceId);
	}
}