/**
 * Describe Instances Action Sample
 * The DescribeInstances operation returns information about instances that you
 * own.
 * If you specify one or more instance IDs, Amazon EC2 returns information for
 * those instances. If you do not specify instance IDs, Amazon EC2 returns
 * information for all relevant instances. If you specify an invalid instance ID,
 * a fault is returned. If you specify an instance that you do not own, it will
 * not be included in the returned results.
 * Recently terminated instances might appear in the returned results. This
 * interval is usually less than one hour.
 *   
 * @param Amazon_EC2_Interface $service instance of Amazon_EC2_Interface
 * @param mixed $request Amazon_EC2_Model_DescribeInstances or array of parameters
 */
function invokeDescribeInstances(Amazon_EC2_Interface $service, $request)
{
    try {
        $response = $service->describeInstances($request);
        echo "Service Response\n";
        echo "=============================================================================\n";
        echo "        DescribeInstancesResponse\n";
        if ($response->isSetResponseMetadata()) {
            echo "            ResponseMetadata\n";
            $responseMetadata = $response->getResponseMetadata();
            if ($responseMetadata->isSetRequestId()) {
                echo "                RequestId\n";
                echo "                    " . $responseMetadata->getRequestId() . "\n";
            }
        }
        if ($response->isSetDescribeInstancesResult()) {
            echo "            DescribeInstancesResult\n";
            $describeInstancesResult = $response->getDescribeInstancesResult();
            $reservationList = $describeInstancesResult->getReservation();
            foreach ($reservationList as $reservation) {
                echo "                Reservation\n";
                if ($reservation->isSetReservationId()) {
                    echo "                    ReservationId\n";
                    echo "                        " . $reservation->getReservationId() . "\n";
                }
                if ($reservation->isSetOwnerId()) {
                    echo "                    OwnerId\n";
                    echo "                        " . $reservation->getOwnerId() . "\n";
                }
                if ($reservation->isSetRequesterId()) {
                    echo "                    RequesterId\n";
                    echo "                        " . $reservation->getRequesterId() . "\n";
                }
                $groupNameList = $reservation->getGroupName();
                foreach ($groupNameList as $groupName) {
                    echo "                    GroupName\n";
                    echo "                        " . $groupName;
                }
                $runningInstanceList = $reservation->getRunningInstance();
                foreach ($runningInstanceList as $runningInstance) {
                    echo "                    RunningInstance\n";
                    if ($runningInstance->isSetInstanceId()) {
                        echo "                        InstanceId\n";
                        echo "                            " . $runningInstance->getInstanceId() . "\n";
                    }
                    if ($runningInstance->isSetImageId()) {
                        echo "                        ImageId\n";
                        echo "                            " . $runningInstance->getImageId() . "\n";
                    }
                    if ($runningInstance->isSetInstanceState()) {
                        echo "                        InstanceState\n";
                        $instanceState = $runningInstance->getInstanceState();
                        if ($instanceState->isSetCode()) {
                            echo "                            Code\n";
                            echo "                                " . $instanceState->getCode() . "\n";
                        }
                        if ($instanceState->isSetName()) {
                            echo "                            Name\n";
                            echo "                                " . $instanceState->getName() . "\n";
                        }
                    }
                    if ($runningInstance->isSetPrivateDnsName()) {
                        echo "                        PrivateDnsName\n";
                        echo "                            " . $runningInstance->getPrivateDnsName() . "\n";
                    }
                    if ($runningInstance->isSetPublicDnsName()) {
                        echo "                        PublicDnsName\n";
                        echo "                            " . $runningInstance->getPublicDnsName() . "\n";
                    }
                    if ($runningInstance->isSetStateTransitionReason()) {
                        echo "                        StateTransitionReason\n";
                        echo "                            " . $runningInstance->getStateTransitionReason() . "\n";
                    }
                    if ($runningInstance->isSetKeyName()) {
                        echo "                        KeyName\n";
                        echo "                            " . $runningInstance->getKeyName() . "\n";
                    }
                    if ($runningInstance->isSetAmiLaunchIndex()) {
                        echo "                        AmiLaunchIndex\n";
                        echo "                            " . $runningInstance->getAmiLaunchIndex() . "\n";
                    }
                    $productCodeList = $runningInstance->getProductCode();
                    foreach ($productCodeList as $productCode) {
                        echo "                        ProductCode\n";
                        echo "                            " . $productCode;
                    }
                    if ($runningInstance->isSetInstanceType()) {
                        echo "                        InstanceType\n";
                        echo "                            " . $runningInstance->getInstanceType() . "\n";
                    }
                    if ($runningInstance->isSetLaunchTime()) {
                        echo "                        LaunchTime\n";
                        echo "                            " . $runningInstance->getLaunchTime() . "\n";
                    }
                    if ($runningInstance->isSetPlacement()) {
                        echo "                        Placement\n";
                        $placement = $runningInstance->getPlacement();
                        if ($placement->isSetAvailabilityZone()) {
                            echo "                            AvailabilityZone\n";
                            echo "                                " . $placement->getAvailabilityZone() . "\n";
                        }
                    }
                    if ($runningInstance->isSetKernelId()) {
                        echo "                        KernelId\n";
                        echo "                            " . $runningInstance->getKernelId() . "\n";
                    }
                    if ($runningInstance->isSetRamdiskId()) {
                        echo "                        RamdiskId\n";
                        echo "                            " . $runningInstance->getRamdiskId() . "\n";
                    }
                    if ($runningInstance->isSetPlatform()) {
                        echo "                        Platform\n";
                        echo "                            " . $runningInstance->getPlatform() . "\n";
                    }
                }
            }
        }
    } catch (Amazon_EC2_Exception $ex) {
        echo "Caught Exception: " . $ex->getMessage() . "\n";
        echo "Response Status Code: " . $ex->getStatusCode() . "\n";
        echo "Error Code: " . $ex->getErrorCode() . "\n";
        echo "Error Type: " . $ex->getErrorType() . "\n";
        echo "Request ID: " . $ex->getRequestId() . "\n";
        echo "XML: " . $ex->getXML() . "\n";
    }
}
/**
 * Describe Instances Action Sample
 * The DescribeInstances operation returns information about instances that you
 * own.
 * If you specify one or more instance IDs, Amazon EC2 returns information for
 * those instances. If you do not specify instance IDs, Amazon EC2 returns
 * information for all relevant instances. If you specify an invalid instance ID,
 * a fault is returned. If you specify an instance that you do not own, it will
 * not be included in the returned results.
 * Recently terminated instances might appear in the returned results. This
 * interval is usually less than one hour.  
 * @param Amazon_EC2_Interface $service instance of Amazon_EC2_Interface
 * @param mixed $request Amazon_EC2_Model_DescribeInstances or array of parameters
 */
function invokeDescribeInstances(Amazon_EC2_Interface $service, $request)
{
    try {
        $response = $service->describeInstances($request);
        echo "Service Response\n";
        echo "=============================================================================\n";
        echo "        DescribeInstancesResponse\n";
        if ($response->isSetResponseMetadata()) {
            echo "            ResponseMetadata\n";
            $responseMetadata = $response->getResponseMetadata();
            if ($responseMetadata->isSetRequestId()) {
                echo "                RequestId\n";
                echo "                    " . $responseMetadata->getRequestId() . "\n";
            }
        }
        if ($response->isSetDescribeInstancesResult()) {
            echo "            DescribeInstancesResult\n";
            $describeInstancesResult = $response->getDescribeInstancesResult();
            $reservationList = $describeInstancesResult->getReservation();
            foreach ($reservationList as $reservation) {
                echo "                Reservation\n";
                if ($reservation->isSetReservationId()) {
                    echo "                    ReservationId\n";
                    echo "                        " . $reservation->getReservationId() . "\n";
                }
                if ($reservation->isSetOwnerId()) {
                    echo "                    OwnerId\n";
                    echo "                        " . $reservation->getOwnerId() . "\n";
                }
                if ($reservation->isSetRequesterId()) {
                    echo "                    RequesterId\n";
                    echo "                        " . $reservation->getRequesterId() . "\n";
                }
                $groupNameList = $reservation->getGroupName();
                foreach ($groupNameList as $groupName) {
                    echo "                    GroupName\n";
                    echo "                        " . $groupName;
                }
                $runningInstanceList = $reservation->getRunningInstance();
                foreach ($runningInstanceList as $runningInstance) {
                    echo "                    RunningInstance\n";
                    if ($runningInstance->isSetInstanceId()) {
                        echo "                        InstanceId\n";
                        echo "                            " . $runningInstance->getInstanceId() . "\n";
                    }
                    if ($runningInstance->isSetImageId()) {
                        echo "                        ImageId\n";
                        echo "                            " . $runningInstance->getImageId() . "\n";
                    }
                    if ($runningInstance->isSetInstanceState()) {
                        echo "                        InstanceState\n";
                        $instanceState = $runningInstance->getInstanceState();
                        if ($instanceState->isSetCode()) {
                            echo "                            Code\n";
                            echo "                                " . $instanceState->getCode() . "\n";
                        }
                        if ($instanceState->isSetName()) {
                            echo "                            Name\n";
                            echo "                                " . $instanceState->getName() . "\n";
                        }
                    }
                    if ($runningInstance->isSetPrivateDnsName()) {
                        echo "                        PrivateDnsName\n";
                        echo "                            " . $runningInstance->getPrivateDnsName() . "\n";
                    }
                    if ($runningInstance->isSetPublicDnsName()) {
                        echo "                        PublicDnsName\n";
                        echo "                            " . $runningInstance->getPublicDnsName() . "\n";
                    }
                    if ($runningInstance->isSetStateTransitionReason()) {
                        echo "                        StateTransitionReason\n";
                        echo "                            " . $runningInstance->getStateTransitionReason() . "\n";
                    }
                    if ($runningInstance->isSetKeyName()) {
                        echo "                        KeyName\n";
                        echo "                            " . $runningInstance->getKeyName() . "\n";
                    }
                    if ($runningInstance->isSetAmiLaunchIndex()) {
                        echo "                        AmiLaunchIndex\n";
                        echo "                            " . $runningInstance->getAmiLaunchIndex() . "\n";
                    }
                    $productCodeList = $runningInstance->getProductCode();
                    foreach ($productCodeList as $productCode) {
                        echo "                        ProductCode\n";
                        echo "                            " . $productCode;
                    }
                    if ($runningInstance->isSetInstanceType()) {
                        echo "                        InstanceType\n";
                        echo "                            " . $runningInstance->getInstanceType() . "\n";
                    }
                    if ($runningInstance->isSetLaunchTime()) {
                        echo "                        LaunchTime\n";
                        echo "                            " . $runningInstance->getLaunchTime() . "\n";
                    }
                    if ($runningInstance->isSetPlacement()) {
                        echo "                        Placement\n";
                        $placement = $runningInstance->getPlacement();
                        if ($placement->isSetAvailabilityZone()) {
                            echo "                            AvailabilityZone\n";
                            echo "                                " . $placement->getAvailabilityZone() . "\n";
                        }
                    }
                    if ($runningInstance->isSetKernelId()) {
                        echo "                        KernelId\n";
                        echo "                            " . $runningInstance->getKernelId() . "\n";
                    }
                    if ($runningInstance->isSetRamdiskId()) {
                        echo "                        RamdiskId\n";
                        echo "                            " . $runningInstance->getRamdiskId() . "\n";
                    }
                    if ($runningInstance->isSetPlatform()) {
                        echo "                        Platform\n";
                        echo "                            " . $runningInstance->getPlatform() . "\n";
                    }
                    if ($runningInstance->isSetMonitoring()) {
                        echo "                        Monitoring\n";
                        $monitoring = $runningInstance->getMonitoring();
                        if ($monitoring->isSetMonitoringState()) {
                            echo "                            MonitoringState\n";
                            echo "                                " . $monitoring->getMonitoringState() . "\n";
                        }
                    }
                    if ($runningInstance->isSetSubnetId()) {
                        echo "                        SubnetId\n";
                        echo "                            " . $runningInstance->getSubnetId() . "\n";
                    }
                    if ($runningInstance->isSetVpcId()) {
                        echo "                        VpcId\n";
                        echo "                            " . $runningInstance->getVpcId() . "\n";
                    }
                    if ($runningInstance->isSetPrivateIpAddress()) {
                        echo "                        PrivateIpAddress\n";
                        echo "                            " . $runningInstance->getPrivateIpAddress() . "\n";
                    }
                    if ($runningInstance->isSetIpAddress()) {
                        echo "                        IpAddress\n";
                        echo "                            " . $runningInstance->getIpAddress() . "\n";
                    }
                    if ($runningInstance->isSetStateReason()) {
                        echo "                        StateReason\n";
                        $stateReason = $runningInstance->getStateReason();
                        if ($stateReason->isSetCode()) {
                            echo "                            Code\n";
                            echo "                                " . $stateReason->getCode() . "\n";
                        }
                        if ($stateReason->isSetMessage()) {
                            echo "                            Message\n";
                            echo "                                " . $stateReason->getMessage() . "\n";
                        }
                    }
                    if ($runningInstance->isSetArchitecture()) {
                        echo "                        Architecture\n";
                        echo "                            " . $runningInstance->getArchitecture() . "\n";
                    }
                    if ($runningInstance->isSetRootDeviceType()) {
                        echo "                        RootDeviceType\n";
                        echo "                            " . $runningInstance->getRootDeviceType() . "\n";
                    }
                    if ($runningInstance->isSetRootDeviceName()) {
                        echo "                        RootDeviceName\n";
                        echo "                            " . $runningInstance->getRootDeviceName() . "\n";
                    }
                    $blockDeviceMappingList = $runningInstance->getBlockDeviceMapping();
                    foreach ($blockDeviceMappingList as $blockDeviceMapping) {
                        echo "                        BlockDeviceMapping\n";
                        if ($blockDeviceMapping->isSetDeviceName()) {
                            echo "                            DeviceName\n";
                            echo "                                " . $blockDeviceMapping->getDeviceName() . "\n";
                        }
                        if ($blockDeviceMapping->isSetEbs()) {
                            echo "                            Ebs\n";
                            $ebs = $blockDeviceMapping->getEbs();
                            if ($ebs->isSetVolumeId()) {
                                echo "                                VolumeId\n";
                                echo "                                    " . $ebs->getVolumeId() . "\n";
                            }
                            if ($ebs->isSetStatus()) {
                                echo "                                Status\n";
                                echo "                                    " . $ebs->getStatus() . "\n";
                            }
                            if ($ebs->isSetAttachTime()) {
                                echo "                                AttachTime\n";
                                echo "                                    " . $ebs->getAttachTime() . "\n";
                            }
                            if ($ebs->isSetDeleteOnTermination()) {
                                echo "                                DeleteOnTermination\n";
                                echo "                                    " . $ebs->getDeleteOnTermination() . "\n";
                            }
                        }
                    }
                    if ($runningInstance->isSetInstanceLifecycle()) {
                        echo "                        InstanceLifecycle\n";
                        echo "                            " . $runningInstance->getInstanceLifecycle() . "\n";
                    }
                    if ($runningInstance->isSetSpotInstanceRequestId()) {
                        echo "                        SpotInstanceRequestId\n";
                        echo "                            " . $runningInstance->getSpotInstanceRequestId() . "\n";
                    }
                }
            }
        }
    } catch (Amazon_EC2_Exception $ex) {
        echo "Caught Exception: " . $ex->getMessage() . "\n";
        echo "Response Status Code: " . $ex->getStatusCode() . "\n";
        echo "Error Code: " . $ex->getErrorCode() . "\n";
        echo "Error Type: " . $ex->getErrorType() . "\n";
        echo "Request ID: " . $ex->getRequestId() . "\n";
        echo "XML: " . $ex->getXML() . "\n";
    }
}