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ec2.go
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//
// goamz - Go packages to interact with the Amazon Web Services.
//
// https://wiki.ubuntu.com/goamz
//
// Copyright (c) 2011 Canonical Ltd.
//
// Written by Gustavo Niemeyer <[email protected]>
//
package ec2
import (
"crypto/rand"
"encoding/hex"
"encoding/xml"
"fmt"
"github.com/goamz/goamz/aws"
"log"
"net/http"
"net/http/httputil"
"net/url"
"sort"
"strconv"
"strings"
"time"
)
const debug = false
// The EC2 type encapsulates operations with a specific EC2 region.
type EC2 struct {
aws.Auth
aws.Region
httpClient *http.Client
private byte // Reserve the right of using private data.
}
// NewWithClient creates a new EC2 with a custom http client
func NewWithClient(auth aws.Auth, region aws.Region, client *http.Client) *EC2 {
return &EC2{auth, region, client, 0}
}
// New creates a new EC2.
func New(auth aws.Auth, region aws.Region) *EC2 {
return NewWithClient(auth, region, aws.RetryingClient)
}
// ----------------------------------------------------------------------------
// Filtering helper.
// Filter builds filtering parameters to be used in an EC2 query which supports
// filtering. For example:
//
// filter := NewFilter()
// filter.Add("architecture", "i386")
// filter.Add("launch-index", "0")
// resp, err := ec2.Instances(nil, filter)
//
type Filter struct {
m map[string][]string
}
// NewFilter creates a new Filter.
func NewFilter() *Filter {
return &Filter{make(map[string][]string)}
}
// Add appends a filtering parameter with the given name and value(s).
func (f *Filter) Add(name string, value ...string) {
f.m[name] = append(f.m[name], value...)
}
func (f *Filter) addParams(params map[string]string) {
if f != nil {
a := make([]string, len(f.m))
i := 0
for k := range f.m {
a[i] = k
i++
}
sort.StringSlice(a).Sort()
for i, k := range a {
prefix := "Filter." + strconv.Itoa(i+1)
params[prefix+".Name"] = k
for j, v := range f.m[k] {
params[prefix+".Value."+strconv.Itoa(j+1)] = v
}
}
}
}
// ----------------------------------------------------------------------------
// Request dispatching logic.
// Error encapsulates an error returned by EC2.
//
// See http://goo.gl/VZGuC for more details.
type Error struct {
// HTTP status code (200, 403, ...)
StatusCode int
// EC2 error code ("UnsupportedOperation", ...)
Code string
// The human-oriented error message
Message string
RequestId string `xml:"RequestID"`
}
func (err *Error) Error() string {
if err.Code == "" {
return err.Message
}
return fmt.Sprintf("%s (%s)", err.Message, err.Code)
}
// For now a single error inst is being exposed. In the future it may be useful
// to provide access to all of them, but rather than doing it as an array/slice,
// use a *next pointer, so that it's backward compatible and it continues to be
// easy to handle the first error, which is what most people will want.
type xmlErrors struct {
RequestId string `xml:"RequestID"`
Errors []Error `xml:"Errors>Error"`
}
var timeNow = time.Now
func (ec2 *EC2) query(params map[string]string, resp interface{}) error {
params["Version"] = "2014-02-01"
params["Timestamp"] = timeNow().In(time.UTC).Format(time.RFC3339)
endpoint, err := url.Parse(ec2.Region.EC2Endpoint)
if err != nil {
return err
}
if endpoint.Path == "" {
endpoint.Path = "/"
}
sign(ec2.Auth, "GET", endpoint.Path, params, endpoint.Host)
endpoint.RawQuery = multimap(params).Encode()
if debug {
log.Printf("get { %v } -> {\n", endpoint.String())
}
r, err := ec2.httpClient.Get(endpoint.String())
if err != nil {
return err
}
defer r.Body.Close()
if debug {
dump, _ := httputil.DumpResponse(r, true)
log.Printf("response:\n")
log.Printf("%v\n}\n", string(dump))
}
if r.StatusCode != 200 {
return buildError(r)
}
err = xml.NewDecoder(r.Body).Decode(resp)
return err
}
func multimap(p map[string]string) url.Values {
q := make(url.Values, len(p))
for k, v := range p {
q[k] = []string{v}
}
return q
}
func buildError(r *http.Response) error {
errors := xmlErrors{}
xml.NewDecoder(r.Body).Decode(&errors)
var err Error
if len(errors.Errors) > 0 {
err = errors.Errors[0]
}
err.RequestId = errors.RequestId
err.StatusCode = r.StatusCode
if err.Message == "" {
err.Message = r.Status
}
return &err
}
func makeParams(action string) map[string]string {
params := make(map[string]string)
params["Action"] = action
return params
}
func addParamsList(params map[string]string, label string, ids []string) {
for i, id := range ids {
params[label+"."+strconv.Itoa(i+1)] = id
}
}
func addBlockDeviceParams(params map[string]string, blockDevices []BlockDeviceMapping) {
for i, k := range blockDevices {
// Fixup index since Amazon counts these from 1
prefix := "BlockDeviceMapping." + strconv.Itoa(i+1) + "."
if k.DeviceName != "" {
params[prefix+"DeviceName"] = k.DeviceName
}
if k.VirtualName != "" {
params[prefix+"VirtualName"] = k.VirtualName
}
if k.SnapshotId != "" {
params[prefix+"Ebs.SnapshotId"] = k.SnapshotId
}
if k.VolumeType != "" {
params[prefix+"Ebs.VolumeType"] = k.VolumeType
}
if k.IOPS != 0 {
params[prefix+"Ebs.Iops"] = strconv.FormatInt(k.IOPS, 10)
}
if k.VolumeSize != 0 {
params[prefix+"Ebs.VolumeSize"] = strconv.FormatInt(k.VolumeSize, 10)
}
if k.DeleteOnTermination {
params[prefix+"Ebs.DeleteOnTermination"] = "true"
}
if k.NoDevice {
params[prefix+"NoDevice"] = "true"
}
}
}
// ----------------------------------------------------------------------------
// Instance management functions and types.
// RunInstancesOptions encapsulates options for the respective request in EC2.
//
// See http://goo.gl/Mcm3b for more details.
type RunInstancesOptions struct {
ImageId string
MinCount int
MaxCount int
KeyName string
InstanceType string
SecurityGroups []SecurityGroup
KernelId string
RamdiskId string
UserData []byte
AvailabilityZone string
PlacementGroupName string
Tenancy string
Monitoring bool
SubnetId string
DisableAPITermination bool
ShutdownBehavior string
PrivateIPAddress string
IamInstanceProfile IamInstanceProfile
BlockDevices []BlockDeviceMapping
EbsOptimized bool
AssociatePublicIpAddress bool
}
// Response to a RunInstances request.
//
// See http://goo.gl/Mcm3b for more details.
type RunInstancesResp struct {
RequestId string `xml:"requestId"`
ReservationId string `xml:"reservationId"`
OwnerId string `xml:"ownerId"`
SecurityGroups []SecurityGroup `xml:"groupSet>item"`
Instances []Instance `xml:"instancesSet>item"`
}
// Instance encapsulates a running instance in EC2.
//
// See http://goo.gl/OCH8a for more details.
type Instance struct {
// General instance information
InstanceId string `xml:"instanceId"` // The ID of the instance launched
InstanceType string `xml:"instanceType"` // The instance type eg. m1.small | m1.medium | m1.large etc
AvailabilityZone string `xml:"placement>availabilityZone"` // The Availability Zone the instance is located in
Tags []Tag `xml:"tagSet>item"` // Any tags assigned to the resource
State InstanceState `xml:"instanceState"` // The current state of the instance
Reason string `xml:"reason"` // The reason for the most recent state transition. This might be an empty string
StateReason InstanceStateReason `xml:"stateReason"` // The reason for the most recent state transition
ImageId string `xml:"imageId"` // The ID of the AMI used to launch the instance
KeyName string `xml:"keyName"` // The key pair name, if this instance was launched with an associated key pair
Monitoring string `xml:"monitoring>state"` // Valid values: disabled | enabled | pending
IamInstanceProfile IamInstanceProfile `xml:"iamInstanceProfile"` // The IAM instance profile associated with the instance
LaunchTime string `xml:"launchTime"` // The time the instance was launched
OwnerId string // This isn't currently returned in the response, and is taken from the parent reservation
// More specific information
Architecture string `xml:"architecture"` // Valid values: i386 | x86_64
Hypervisor string `xml:"hypervisor"` // Valid values: ovm | xen
KernelId string `xml:"kernelId"` // The kernel associated with this instance
RamDiskId string `xml:"ramdiskId"` // The RAM disk associated with this instance
Platform string `xml:"platform"` // The value is Windows for Windows AMIs; otherwise blank
VirtualizationType string `xml:"virtualizationType"` // Valid values: paravirtual | hvm
AMILaunchIndex int `xml:"amiLaunchIndex"` // The AMI launch index, which can be used to find this instance in the launch group
PlacementGroupName string `xml:"placement>groupName"` // The name of the placement group the instance is in (for cluster compute instances)
Tenancy string `xml:"placement>tenancy"` // (VPC only) Valid values: default | dedicated
InstanceLifecycle string `xml:"instanceLifecycle"` // Spot instance? Valid values: "spot" or blank
SpotInstanceRequestId string `xml:"spotInstanceRequestId"` // The ID of the Spot Instance request
ClientToken string `xml:"clientToken"` // The idempotency token you provided when you launched the instance
ProductCodes []ProductCode `xml:"productCodes>item"` // The product codes attached to this instance
// Storage
RootDeviceType string `xml:"rootDeviceType"` // Valid values: ebs | instance-store
RootDeviceName string `xml:"rootDeviceName"` // The root device name (for example, /dev/sda1)
BlockDevices []BlockDevice `xml:"blockDeviceMapping>item"` // Any block device mapping entries for the instance
EbsOptimized bool `xml:"ebsOptimized"` // Indicates whether the instance is optimized for Amazon EBS I/O
// Network
DNSName string `xml:"dnsName"` // The public DNS name assigned to the instance. This element remains empty until the instance enters the running state
PrivateDNSName string `xml:"privateDnsName"` // The private DNS name assigned to the instance. This DNS name can only be used inside the Amazon EC2 network. This element remains empty until the instance enters the running state
IPAddress string `xml:"ipAddress"` // The public IP address assigned to the instance
PrivateIPAddress string `xml:"privateIpAddress"` // The private IP address assigned to the instance
SubnetId string `xml:"subnetId"` // The ID of the subnet in which the instance is running
VpcId string `xml:"vpcId"` // The ID of the VPC in which the instance is running
SecurityGroups []SecurityGroup `xml:"groupSet>item"` // A list of the security groups for the instance
// Advanced Networking
NetworkInterfaces []InstanceNetworkInterface `xml:"networkInterfaceSet>item"` // (VPC) One or more network interfaces for the instance
SourceDestCheck bool `xml:"sourceDestCheck"` // Controls whether source/destination checking is enabled on the instance
SriovNetSupport string `xml:"sriovNetSupport"` // Specifies whether enhanced networking is enabled. Valid values: simple
}
// isSpotInstance returns if the instance is a spot instance
func (i Instance) IsSpotInstance() bool {
if i.InstanceLifecycle == "spot" {
return true
}
return false
}
type BlockDevice struct {
DeviceName string `xml:"deviceName"`
EBS EBS `xml:"ebs"`
}
type EBS struct {
VolumeId string `xml:"volumeId"`
Status string `xml:"status"`
AttachTime string `xml:"attachTime"`
DeleteOnTermination bool `xml:"deleteOnTermination"`
}
// ProductCode represents a product code
// See http://goo.gl/hswmQm for more details.
type ProductCode struct {
ProductCode string `xml:"productCode"` // The product code
Type string `xml:"type"` // Valid values: devpay | marketplace
}
// InstanceNetworkInterface represents a network interface attached to an instance
// See http://goo.gl/9eW02N for more details.
type InstanceNetworkInterface struct {
Id string `xml:"networkInterfaceId"`
Description string `xml:"description"`
SubnetId string `xml:"subnetId"`
VpcId string `xml:"vpcId"`
OwnerId string `xml:"ownerId"` // The ID of the AWS account that created the network interface.
Status string `xml:"status"` // Valid values: available | attaching | in-use | detaching
MacAddress string `xml:"macAddress"`
PrivateIPAddress string `xml:"privateIpAddress"`
PrivateDNSName string `xml:"privateDnsName"`
SourceDestCheck bool `xml:"sourceDestCheck"`
SecurityGroups []SecurityGroup `xml:"groupSet>item"`
Attachment InstanceNetworkInterfaceAttachment `xml:"attachment"`
Association InstanceNetworkInterfaceAssociation `xml:"association"`
PrivateIPAddresses []InstancePrivateIpAddress `xml:"privateIpAddressesSet>item"`
}
// InstanceNetworkInterfaceAttachment describes a network interface attachment to an instance
// See http://goo.gl/0ql0Cg for more details
type InstanceNetworkInterfaceAttachment struct {
AttachmentID string `xml:"attachmentID"` // The ID of the network interface attachment.
DeviceIndex int32 `xml:"deviceIndex"` // The index of the device on the instance for the network interface attachment.
Status string `xml:"status"` // Valid values: attaching | attached | detaching | detached
AttachTime string `xml:"attachTime"` // Time attached, as a Datetime
DeleteOnTermination bool `xml:"deleteOnTermination"` // Indicates whether the network interface is deleted when the instance is terminated.
}
// Describes association information for an Elastic IP address.
// See http://goo.gl/YCDdMe for more details
type InstanceNetworkInterfaceAssociation struct {
PublicIP string `xml:"publicIp"` // The address of the Elastic IP address bound to the network interface
PublicDNSName string `xml:"publicDnsName"` // The public DNS name
IPOwnerId string `xml:"ipOwnerId"` // The ID of the owner of the Elastic IP address
}
// InstancePrivateIpAddress describes a private IP address
// See http://goo.gl/irN646 for more details
type InstancePrivateIpAddress struct {
PrivateIPAddress string `xml:"privateIpAddress"` // The private IP address of the network interface
PrivateDNSName string `xml:"privateDnsName"` // The private DNS name
Primary bool `xml:"primary"` // Indicates whether this IP address is the primary private IP address of the network interface
Association InstanceNetworkInterfaceAssociation `xml:"association"` // The association information for an Elastic IP address for the network interface
}
// IamInstanceProfile
// See http://goo.gl/PjyijL for more details
type IamInstanceProfile struct {
ARN string `xml:"arn"`
Id string `xml:"id"`
Name string `xml:"name"`
}
// RunInstances starts new instances in EC2.
// If options.MinCount and options.MaxCount are both zero, a single instance
// will be started; otherwise if options.MaxCount is zero, options.MinCount
// will be used instead.
//
// See http://goo.gl/Mcm3b for more details.
func (ec2 *EC2) RunInstances(options *RunInstancesOptions) (resp *RunInstancesResp, err error) {
params := makeParams("RunInstances")
params["ImageId"] = options.ImageId
params["InstanceType"] = options.InstanceType
var min, max int
if options.MinCount == 0 && options.MaxCount == 0 {
min = 1
max = 1
} else if options.MaxCount == 0 {
min = options.MinCount
max = min
} else {
min = options.MinCount
max = options.MaxCount
}
params["MinCount"] = strconv.Itoa(min)
params["MaxCount"] = strconv.Itoa(max)
token, err := clientToken()
if err != nil {
return nil, err
}
params["ClientToken"] = token
if options.KeyName != "" {
params["KeyName"] = options.KeyName
}
if options.KernelId != "" {
params["KernelId"] = options.KernelId
}
if options.RamdiskId != "" {
params["RamdiskId"] = options.RamdiskId
}
if options.UserData != nil {
userData := make([]byte, b64.EncodedLen(len(options.UserData)))
b64.Encode(userData, options.UserData)
params["UserData"] = string(userData)
}
if options.AvailabilityZone != "" {
params["Placement.AvailabilityZone"] = options.AvailabilityZone
}
if options.PlacementGroupName != "" {
params["Placement.GroupName"] = options.PlacementGroupName
}
if options.Tenancy != "" {
params["Placement.Tenancy"] = options.Tenancy
}
if options.Monitoring {
params["Monitoring.Enabled"] = "true"
}
if options.SubnetId != "" && options.AssociatePublicIpAddress {
// If we have a non-default VPC / Subnet specified, we can flag
// AssociatePublicIpAddress to get a Public IP assigned. By default these are not provided.
// You cannot specify both SubnetId and the NetworkInterface.0.* parameters though, otherwise
// you get: Network interfaces and an instance-level subnet ID may not be specified on the same request
// You also need to attach Security Groups to the NetworkInterface instead of the instance,
// to avoid: Network interfaces and an instance-level security groups may not be specified on
// the same request
params["NetworkInterface.0.DeviceIndex"] = "0"
params["NetworkInterface.0.AssociatePublicIpAddress"] = "true"
params["NetworkInterface.0.SubnetId"] = options.SubnetId
i := 1
for _, g := range options.SecurityGroups {
// We only have SecurityGroupId's on NetworkInterface's, no SecurityGroup params.
if g.Id != "" {
params["NetworkInterface.0.SecurityGroupId."+strconv.Itoa(i)] = g.Id
i++
}
}
} else {
if options.SubnetId != "" {
params["SubnetId"] = options.SubnetId
}
i, j := 1, 1
for _, g := range options.SecurityGroups {
if g.Id != "" {
params["SecurityGroupId."+strconv.Itoa(i)] = g.Id
i++
} else {
params["SecurityGroup."+strconv.Itoa(j)] = g.Name
j++
}
}
}
if options.IamInstanceProfile.ARN != "" {
params["IamInstanceProfile.Arn"] = options.IamInstanceProfile.ARN
}
if options.IamInstanceProfile.Name != "" {
params["IamInstanceProfile.Name"] = options.IamInstanceProfile.Name
}
if options.DisableAPITermination {
params["DisableApiTermination"] = "true"
}
if options.ShutdownBehavior != "" {
params["InstanceInitiatedShutdownBehavior"] = options.ShutdownBehavior
}
if options.PrivateIPAddress != "" {
params["PrivateIpAddress"] = options.PrivateIPAddress
}
if options.EbsOptimized {
params["EbsOptimized"] = "true"
}
addBlockDeviceParams(params, options.BlockDevices)
resp = &RunInstancesResp{}
err = ec2.query(params, resp)
if err != nil {
return nil, err
}
return
}
func clientToken() (string, error) {
// Maximum EC2 client token size is 64 bytes.
// Each byte expands to two when hex encoded.
buf := make([]byte, 32)
_, err := rand.Read(buf)
if err != nil {
return "", err
}
return hex.EncodeToString(buf), nil
}
// Response to a TerminateInstances request.
//
// See http://goo.gl/3BKHj for more details.
type TerminateInstancesResp struct {
RequestId string `xml:"requestId"`
StateChanges []InstanceStateChange `xml:"instancesSet>item"`
}
// InstanceState encapsulates the state of an instance in EC2.
//
// See http://goo.gl/y3ZBq for more details.
type InstanceState struct {
Code int `xml:"code"` // Watch out, bits 15-8 have unpublished meaning.
Name string `xml:"name"`
}
// InstanceStateChange informs of the previous and current states
// for an instance when a state change is requested.
type InstanceStateChange struct {
InstanceId string `xml:"instanceId"`
CurrentState InstanceState `xml:"currentState"`
PreviousState InstanceState `xml:"previousState"`
}
// InstanceStateReason describes a state change for an instance in EC2
//
// See http://goo.gl/KZkbXi for more details
type InstanceStateReason struct {
Code string `xml:"code"`
Message string `xml:"message"`
}
// TerminateInstances requests the termination of instances when the given ids.
//
// See http://goo.gl/3BKHj for more details.
func (ec2 *EC2) TerminateInstances(instIds []string) (resp *TerminateInstancesResp, err error) {
params := makeParams("TerminateInstances")
addParamsList(params, "InstanceId", instIds)
resp = &TerminateInstancesResp{}
err = ec2.query(params, resp)
if err != nil {
return nil, err
}
return
}
// Response to a DescribeInstances request.
//
// See http://goo.gl/mLbmw for more details.
type DescribeInstancesResp struct {
RequestId string `xml:"requestId"`
Reservations []Reservation `xml:"reservationSet>item"`
}
// Reservation represents details about a reservation in EC2.
//
// See http://goo.gl/0ItPT for more details.
type Reservation struct {
ReservationId string `xml:"reservationId"`
OwnerId string `xml:"ownerId"`
RequesterId string `xml:"requesterId"`
SecurityGroups []SecurityGroup `xml:"groupSet>item"`
Instances []Instance `xml:"instancesSet>item"`
}
// Instances returns details about instances in EC2. Both parameters
// are optional, and if provided will limit the instances returned to those
// matching the given instance ids or filtering rules.
//
// See http://goo.gl/4No7c for more details.
func (ec2 *EC2) DescribeInstances(instIds []string, filter *Filter) (resp *DescribeInstancesResp, err error) {
params := makeParams("DescribeInstances")
addParamsList(params, "InstanceId", instIds)
filter.addParams(params)
resp = &DescribeInstancesResp{}
err = ec2.query(params, resp)
if err != nil {
return nil, err
}
// Add additional parameters to instances which aren't available in the response
for i, rsv := range resp.Reservations {
ownerId := rsv.OwnerId
for j, inst := range rsv.Instances {
inst.OwnerId = ownerId
resp.Reservations[i].Instances[j] = inst
}
}
return
}
// DescribeInstanceStatusOptions encapsulates the query parameters for the corresponding action.
//
// See http:////goo.gl/2FBTdS for more details.
type DescribeInstanceStatusOptions struct {
InstanceIds []string // If non-empty, limit the query to this subset of instances. Maximum length of 100.
IncludeAllInstances bool // If true, describe all instances, instead of just running instances (the default).
MaxResults int // Maximum number of results to return. Minimum of 5. Maximum of 1000.
NextToken string // The token for the next set of items to return. (You received this token from a prior call.)
}
// Response to a DescribeInstanceStatus request.
//
// See http://goo.gl/2FBTdS for more details.
type DescribeInstanceStatusResp struct {
RequestId string `xml:"requestId"`
InstanceStatusSet []InstanceStatusItem `xml:"instanceStatusSet>item"`
NextToken string `xml:"nextToken"`
}
// InstanceStatusItem describes the instance status, cause, details, and potential actions to take in response.
//
// See http://goo.gl/oImFZZ for more details.
type InstanceStatusItem struct {
InstanceId string `xml:"instanceId"`
AvailabilityZone string `xml:"availabilityZone"`
Events []InstanceStatusEvent `xml:"eventsSet>item"` // Extra information regarding events associated with the instance.
InstanceState InstanceState `xml:"instanceState"` // The intended state of the instance. Calls to DescribeInstanceStatus require that an instance be in the running state.
SystemStatus InstanceStatus `xml:"systemStatus"`
InstanceStatus InstanceStatus `xml:"instanceStatus"`
}
// InstanceStatusEvent describes an instance event.
//
// See http://goo.gl/PXsDTn for more details.
type InstanceStatusEvent struct {
Code string `xml:"code"` // The associated code of the event.
Description string `xml:"description"` // A description of the event.
NotBefore string `xml:"notBefore"` // The earliest scheduled start time for the event.
NotAfter string `xml:"notAfter"` // The latest scheduled end time for the event.
}
// InstanceStatus describes the status of an instance with details.
//
// See http://goo.gl/eFch4S for more details.
type InstanceStatus struct {
Status string `xml:"status"` // The instance status.
Details InstanceStatusDetails `xml:"details"` // The system instance health or application instance health.
}
// InstanceStatusDetails describes the instance status with the cause and more detail.
//
// See http://goo.gl/3qoMC4 for more details.
type InstanceStatusDetails struct {
Name string `xml:"name"` // The type of instance status.
Status string `xml:"status"` // The status.
ImpairedSince string `xml:"impairedSince"` // The time when a status check failed. For an instance that was launched and impaired, this is the time when the instance was launched.
}
// DescribeInstanceStatus returns instance status information about instances in EC2.
// instIds and filter are optional, and if provided will limit the instances returned to those
// matching the given instance ids or filtering rules.
// all determines whether to report all matching instances or only those in the running state
//
// See http://goo.gl/2FBTdS for more details.
func (ec2 *EC2) DescribeInstanceStatus(options *DescribeInstanceStatusOptions, filter *Filter) (resp *DescribeInstanceStatusResp, err error) {
params := makeParams("DescribeInstanceStatus")
if len(options.InstanceIds) > 0 {
addParamsList(params, "InstanceId", options.InstanceIds)
}
if options.IncludeAllInstances {
params["IncludeAllInstances"] = "true"
}
if options.MaxResults != 0 {
params["MaxResults"] = strconv.Itoa(options.MaxResults)
}
if options.NextToken != "" {
params["NextToken"] = options.NextToken
}
filter.addParams(params)
resp = &DescribeInstanceStatusResp{}
err = ec2.query(params, resp)
if err != nil {
return nil, err
}
return
}
// ----------------------------------------------------------------------------
// KeyPair management functions and types.
type CreateKeyPairResp struct {
RequestId string `xml:"requestId"`
KeyName string `xml:"keyName"`
KeyFingerprint string `xml:"keyFingerprint"`
KeyMaterial string `xml:"keyMaterial"`
}
// CreateKeyPair creates a new key pair and returns the private key contents.
//
// See http://goo.gl/0S6hV
func (ec2 *EC2) CreateKeyPair(keyName string) (resp *CreateKeyPairResp, err error) {
params := makeParams("CreateKeyPair")
params["KeyName"] = keyName
resp = &CreateKeyPairResp{}
err = ec2.query(params, resp)
if err == nil {
resp.KeyFingerprint = strings.TrimSpace(resp.KeyFingerprint)
}
return
}
// DeleteKeyPair deletes a key pair.
//
// See http://goo.gl/0bqok
func (ec2 *EC2) DeleteKeyPair(name string) (resp *SimpleResp, err error) {
params := makeParams("DeleteKeyPair")
params["KeyName"] = name
resp = &SimpleResp{}
err = ec2.query(params, resp)
return
}
// ResourceTag represents key-value metadata used to classify and organize
// EC2 instances.
//
// See http://goo.gl/bncl3 for more details
type Tag struct {
Key string `xml:"key"`
Value string `xml:"value"`
}
// CreateTags adds or overwrites one or more tags for the specified taggable resources.
// For a list of tagable resources, see: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/Using_Tags.html
//
// See http://goo.gl/Vmkqc for more details
func (ec2 *EC2) CreateTags(resourceIds []string, tags []Tag) (resp *SimpleResp, err error) {
params := makeParams("CreateTags")
addParamsList(params, "ResourceId", resourceIds)
for j, tag := range tags {
params["Tag."+strconv.Itoa(j+1)+".Key"] = tag.Key
params["Tag."+strconv.Itoa(j+1)+".Value"] = tag.Value
}
resp = &SimpleResp{}
err = ec2.query(params, resp)
if err != nil {
return nil, err
}
return resp, nil
}
// Response to a StartInstances request.
//
// See http://goo.gl/awKeF for more details.
type StartInstanceResp struct {
RequestId string `xml:"requestId"`
StateChanges []InstanceStateChange `xml:"instancesSet>item"`
}
// Response to a StopInstances request.
//
// See http://goo.gl/436dJ for more details.
type StopInstanceResp struct {
RequestId string `xml:"requestId"`
StateChanges []InstanceStateChange `xml:"instancesSet>item"`
}
// StartInstances starts an Amazon EBS-backed AMI that you've previously stopped.
//
// See http://goo.gl/awKeF for more details.
func (ec2 *EC2) StartInstances(ids ...string) (resp *StartInstanceResp, err error) {
params := makeParams("StartInstances")
addParamsList(params, "InstanceId", ids)
resp = &StartInstanceResp{}
err = ec2.query(params, resp)
if err != nil {
return nil, err
}
return resp, nil
}
// StopInstances requests stopping one or more Amazon EBS-backed instances.
//
// See http://goo.gl/436dJ for more details.
func (ec2 *EC2) StopInstances(ids ...string) (resp *StopInstanceResp, err error) {
params := makeParams("StopInstances")
addParamsList(params, "InstanceId", ids)
resp = &StopInstanceResp{}
err = ec2.query(params, resp)
if err != nil {
return nil, err
}
return resp, nil
}
// RebootInstance requests a reboot of one or more instances. This operation is asynchronous;
// it only queues a request to reboot the specified instance(s). The operation will succeed
// if the instances are valid and belong to you.
//
// Requests to reboot terminated instances are ignored.
//
// See http://goo.gl/baoUf for more details.
func (ec2 *EC2) RebootInstances(ids ...string) (resp *SimpleResp, err error) {
params := makeParams("RebootInstances")
addParamsList(params, "InstanceId", ids)
resp = &SimpleResp{}
err = ec2.query(params, resp)
if err != nil {
return nil, err
}
return resp, nil
}
// The ModifyInstanceAttribute request parameters.
type ModifyInstance struct {
InstanceType string
BlockDevices []BlockDeviceMapping
DisableAPITermination bool
EbsOptimized bool
SecurityGroups []SecurityGroup
ShutdownBehavior string
KernelId string
RamdiskId string
SourceDestCheck bool
SriovNetSupport bool
UserData []byte
}
// Response to a ModifyInstanceAttribute request.
//
// http://goo.gl/icuXh5 for more details.
type ModifyInstanceResp struct {
RequestId string `xml:"requestId"`
Return bool `xml:"return"`
}
// ModifyImageAttribute modifies the specified attribute of the specified instance.
// You can specify only one attribute at a time. To modify some attributes, the
// instance must be stopped.
//
// See http://goo.gl/icuXh5 for more details.
func (ec2 *EC2) ModifyInstance(instId string, options *ModifyInstance) (resp *ModifyInstanceResp, err error) {
params := makeParams("ModifyInstanceAttribute")
params["InstanceId"] = instId
addBlockDeviceParams(params, options.BlockDevices)
if options.InstanceType != "" {
params["InstanceType.Value"] = options.InstanceType
}
if options.DisableAPITermination {
params["DisableApiTermination.Value"] = "true"
}
if options.EbsOptimized {
params["EbsOptimized"] = "true"
}
if options.ShutdownBehavior != "" {
params["InstanceInitiatedShutdownBehavior.Value"] = options.ShutdownBehavior
}
if options.KernelId != "" {
params["Kernel.Value"] = options.KernelId
}
if options.RamdiskId != "" {
params["Ramdisk.Value"] = options.RamdiskId
}
if options.SourceDestCheck {
params["SourceDestCheck.Value"] = "true"
}
if options.SriovNetSupport {
params["SriovNetSupport.Value"] = "simple"
}
if options.UserData != nil {
userData := make([]byte, b64.EncodedLen(len(options.UserData)))
b64.Encode(userData, options.UserData)
params["UserData"] = string(userData)
}
i := 1
for _, g := range options.SecurityGroups {
if g.Id != "" {
params["GroupId."+strconv.Itoa(i)] = g.Id
i++
}
}
resp = &ModifyInstanceResp{}
err = ec2.query(params, resp)
if err != nil {
resp = nil
}
return
}
// Reserved Instances
// Structures
// DescribeReservedInstancesResponse structure returned from a DescribeReservedInstances request.
//
// See
type DescribeReservedInstancesResponse struct {
RequestId string `xml:"requestId"`
ReservedInstances []ReservedInstancesResponseItem `xml:"reservedInstancesSet>item"`
}
//
//
// See
type ReservedInstancesResponseItem struct {
ReservedInstanceId string `xml:"reservedInstancesId"`
InstanceType string `xml:"instanceType"`
AvailabilityZone string `xml:"availabilityZone"`
Start string `xml:"start"`
Duration uint64 `xml:"duration"`
End string `xml:"end"`
FixedPrice float32 `xml:"fixedPrice"`
UsagePrice float32 `xml:"usagePrice"`
InstanceCount int `xml:"instanceCount"`
ProductDescription string `xml:"productDescription"`
State string `xml:"state"`
Tags []Tag `xml:"tagSet->item"`
InstanceTenancy string `xml:"instanceTenancy"`
CurrencyCode string `xml:"currencyCode"`
OfferingType string `xml:"offeringType"`
RecurringCharges []RecurringCharge `xml:"recurringCharges>item"`
}
//
//
// See
type RecurringCharge struct {
Frequency string `xml:"frequency"`
Amount float32 `xml:"amount"`
}
// functions
// DescribeReservedInstances
//
// See
func (ec2 *EC2) DescribeReservedInstances(instIds []string, filter *Filter) (resp *DescribeReservedInstancesResponse, err error) {
params := makeParams("DescribeReservedInstances")
for i, id := range instIds {
params["ReservedInstancesId."+strconv.Itoa(i+1)] = id
}
filter.addParams(params)
resp = &DescribeReservedInstancesResponse{}
err = ec2.query(params, resp)
if err != nil {
return nil, err
}
return resp, nil
}
// ----------------------------------------------------------------------------
// Image and snapshot management functions and types.
// The CreateImage request parameters.
//
// See http://goo.gl/cxU41 for more details.
type CreateImage struct {