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instance.go
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instance.go
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package civogo
import (
"bytes"
"encoding/json"
"fmt"
"strings"
"time"
"github.com/civo/civogo/utils"
)
// Instance represents a virtual server within Civo's infrastructure
type Instance struct {
ID string `json:"id,omitempty"`
OpenstackServerID string `json:"openstack_server_id,omitempty"`
Hostname string `json:"hostname,omitempty"`
ReverseDNS string `json:"reverse_dns,omitempty"`
Size string `json:"size,omitempty"`
Region string `json:"region,omitempty"`
NetworkID string `json:"network_id,omitempty"`
PrivateIP string `json:"private_ip,omitempty"`
PublicIP string `json:"public_ip,omitempty"`
IPv6 string `json:"ipv6,omitempty"`
PseudoIP string `json:"pseudo_ip,omitempty"`
TemplateID string `json:"template_id,omitempty"`
SourceType string `json:"source_type,omitempty"`
SourceID string `json:"source_id,omitempty"`
SnapshotID string `json:"snapshot_id,omitempty"`
InitialUser string `json:"initial_user,omitempty"`
InitialPassword string `json:"initial_password,omitempty"`
SSHKey string `json:"ssh_key,omitempty"`
SSHKeyID string `json:"ssh_key_id,omitempty"`
Status string `json:"status,omitempty"`
Notes string `json:"notes,omitempty"`
FirewallID string `json:"firewall_id,omitempty"`
Tags []string `json:"tags,omitempty"`
CivostatsdToken string `json:"civostatsd_token,omitempty"`
CivostatsdStats string `json:"civostatsd_stats,omitempty"`
CivostatsdStatsPerMinute []string `json:"civostatsd_stats_per_minute,omitempty"`
CivostatsdStatsPerHour []string `json:"civostatsd_stats_per_hour,omitempty"`
OpenstackImageID string `json:"openstack_image_id,omitempty"`
RescuePassword string `json:"rescue_password,omitempty"`
VolumeBacked bool `json:"volume_backed,omitempty"`
CPUCores int `json:"cpu_cores,omitempty"`
RAMMegabytes int `json:"ram_mb,omitempty"`
DiskGigabytes int `json:"disk_gb,omitempty"`
GPUCount int `json:"gpu_count,omitempty"`
GPUType string `json:"gpu_type,omitempty"`
Script string `json:"script,omitempty"`
CreatedAt time.Time `json:"created_at,omitempty"`
ReservedIPID string `json:"reserved_ip_id,omitempty"`
ReservedIPName string `json:"reserved_ip_name,omitempty"`
ReservedIP string `json:"reserved_ip,omitempty"`
VolumeType string `json:"volume_type,omitempty"`
Subnets []Subnet `json:"subnets,omitempty"`
AttachedVolumes []AttachedVolume `json:"attached_volumes,omitempty"`
PlacementRule PlacementRule `json:"placement_rule,omitempty"`
}
//"cpu_cores":1,"ram_mb":2048,"disk_gb":25
// InstanceConsole represents a link to a webconsole for an instances
type InstanceConsole struct {
URL string `json:"url"`
}
// InstanceVnc represents VNC information for an instances
type InstanceVnc struct {
URI string `json:"uri"`
Result string `json:"result"`
Name string `json:"name"`
Label string `json:"label"`
}
// PaginatedInstanceList returns a paginated list of Instance object
type PaginatedInstanceList struct {
Page int `json:"page"`
PerPage int `json:"per_page"`
Pages int `json:"pages"`
Items []Instance `json:"items"`
}
// AttachedVolume disk information
type AttachedVolume struct {
// ID of the volume to attach
ID string `json:"id"`
}
// InstanceConfig describes the parameters for a new instance
// none of the fields are mandatory and will be automatically
// set with default values
type InstanceConfig struct {
Count int `json:"count"`
Hostname string `json:"hostname"`
ReverseDNS string `json:"reverse_dns"`
Size string `json:"size"`
Region string `json:"region"`
PublicIPRequired string `json:"public_ip"`
ReservedIPv4 string `json:"reserved_ipv4"`
PrivateIPv4 string `json:"private_ipv4"`
NetworkID string `json:"network_id"`
TemplateID string `json:"template_id"`
SourceType string `json:"source_type"`
SourceID string `json:"source_id"`
SnapshotID string `json:"snapshot_id"`
Subnets []string `json:"subnets,omitempty"`
InitialUser string `json:"initial_user"`
SSHKeyID string `json:"ssh_key_id"`
Script string `json:"script"`
Tags []string `json:"-"`
TagsList string `json:"tags"`
FirewallID string `json:"firewall_id"`
VolumeType string `json:"volume_type,omitempty"`
AttachedVolumes []AttachedVolume `json:"attached_volumes"`
PlacementRule PlacementRule `json:"placement_rule"`
}
// AffinityRule represents a affinity rule
type AffinityRule struct {
Type string `json:"type"`
Exclusive bool `json:"exclusive"`
Tags []string `json:"tags"`
}
// PlacementRule represents a placement rule
type PlacementRule struct {
AffinityRules []AffinityRule `json:"affinity_rules,omitempty"`
NodeSelector map[string]string `json:"node_selector,omitempty"`
}
// ListInstances returns a page of Instances owned by the calling API account
func (c *Client) ListInstances(page int, perPage int) (*PaginatedInstanceList, error) {
url := "/v2/instances"
if page != 0 && perPage != 0 {
url = url + fmt.Sprintf("?page=%d&per_page=%d", page, perPage)
}
resp, err := c.SendGetRequest(url)
if err != nil {
return nil, decodeError(err)
}
PaginatedInstances := PaginatedInstanceList{}
err = json.NewDecoder(bytes.NewReader(resp)).Decode(&PaginatedInstances)
return &PaginatedInstances, err
}
// ListAllInstances returns all (well, upto 99,999,999 instances) Instances owned by the calling API account
func (c *Client) ListAllInstances() ([]Instance, error) {
instances, err := c.ListInstances(1, 99999999)
if err != nil {
return []Instance{}, decodeError(err)
}
return instances.Items, nil
}
// FindInstance finds a instance by either part of the ID or part of the hostname
func (c *Client) FindInstance(search string) (*Instance, error) {
instances, err := c.ListAllInstances()
if err != nil {
return nil, decodeError(err)
}
exactMatch := false
partialMatchesCount := 0
result := Instance{}
for _, value := range instances {
if value.Hostname == search || value.ID == search {
exactMatch = true
result = value
} else if strings.Contains(value.Hostname, search) || strings.Contains(value.ID, search) {
if !exactMatch {
result = value
partialMatchesCount++
}
}
}
if exactMatch || partialMatchesCount == 1 {
return &result, nil
} else if partialMatchesCount > 1 {
err := fmt.Errorf("unable to find %s because there were multiple matches", search)
return nil, MultipleMatchesError.wrap(err)
} else {
err := fmt.Errorf("unable to find %s, zero matches", search)
return nil, ZeroMatchesError.wrap(err)
}
}
// GetInstance returns a single Instance by its full ID
func (c *Client) GetInstance(id string) (*Instance, error) {
resp, err := c.SendGetRequest("/v2/instances/" + id)
if err != nil {
return nil, decodeError(err)
}
instance := Instance{}
err = json.NewDecoder(bytes.NewReader(resp)).Decode(&instance)
return &instance, err
}
// NewInstanceConfig returns an initialized config for a new instance
func (c *Client) NewInstanceConfig() (*InstanceConfig, error) {
network, err := c.GetDefaultNetwork()
if err != nil {
return nil, decodeError(err)
}
diskimage, err := c.GetMostRecentDistro("ubuntu")
if err != nil {
return nil, decodeError(err)
}
return &InstanceConfig{
Count: 1,
Hostname: utils.RandomName(),
ReverseDNS: "",
Size: "g3.medium",
Region: c.Region,
PublicIPRequired: "true",
NetworkID: network.ID,
TemplateID: diskimage.ID,
SnapshotID: "",
InitialUser: "civo",
SSHKeyID: "",
Script: "",
Tags: []string{""},
FirewallID: "",
}, nil
}
// CreateInstance creates a new instance in the account
func (c *Client) CreateInstance(config *InstanceConfig) (*Instance, error) {
config.TagsList = strings.Join(config.Tags, " ")
body, err := c.SendPostRequest("/v2/instances", config)
if err != nil {
return nil, decodeError(err)
}
var instance Instance
if err := json.NewDecoder(bytes.NewReader(body)).Decode(&instance); err != nil {
return nil, err
}
return &instance, nil
}
// SetInstanceTags sets the tags for the specified instance
func (c *Client) SetInstanceTags(i *Instance, tags string) (*SimpleResponse, error) {
resp, err := c.SendPutRequest(fmt.Sprintf("/v2/instances/%s/tags", i.ID), map[string]string{
"tags": tags,
"region": c.Region,
})
if err != nil {
return nil, decodeError(err)
}
response, err := c.DecodeSimpleResponse(resp)
return response, err
}
// UpdateInstance updates an Instance's hostname, reverse DNS or notes
func (c *Client) UpdateInstance(i *Instance) (*SimpleResponse, error) {
params := map[string]interface{}{
"hostname": i.Hostname,
"reverse_dns": i.ReverseDNS,
"notes": i.Notes,
"region": c.Region,
"public_ip": i.PublicIP,
"subnets": i.Subnets,
}
if i.Notes == "" {
params["notes_delete"] = "true"
}
resp, err := c.SendPutRequest(fmt.Sprintf("/v2/instances/%s", i.ID), params)
if err != nil {
return nil, decodeError(err)
}
response, err := c.DecodeSimpleResponse(resp)
return response, err
}
// GetInstanceVnc enables and gets the VNC information for an instance
func (c *Client) GetInstanceVnc(id string) (InstanceVnc, error) {
resp, err := c.SendPutRequest(fmt.Sprintf("/v2/instances/%s/vnc", id), map[string]string{
"region": c.Region,
})
vnc := InstanceVnc{}
if err != nil {
return vnc, decodeError(err)
}
err = json.NewDecoder(bytes.NewReader(resp)).Decode(&vnc)
return vnc, err
}
// DeleteInstance deletes an instance and frees its resources
func (c *Client) DeleteInstance(id string) (*SimpleResponse, error) {
resp, err := c.SendDeleteRequest("/v2/instances/" + id)
if err != nil {
return nil, decodeError(err)
}
response, err := c.DecodeSimpleResponse(resp)
return response, err
}
// RebootInstance reboots an instance (short version of HardRebootInstance)
func (c *Client) RebootInstance(id string) (*SimpleResponse, error) {
return c.HardRebootInstance(id)
}
// HardRebootInstance harshly reboots an instance (like shutting the power off and booting it again)
func (c *Client) HardRebootInstance(id string) (*SimpleResponse, error) {
resp, err := c.SendPostRequest(fmt.Sprintf("/v2/instances/%s/hard_reboots", id), map[string]string{
"region": c.Region,
})
if err != nil {
return nil, decodeError(err)
}
response, err := c.DecodeSimpleResponse(resp)
return response, err
}
// SoftRebootInstance requests the VM to shut down nicely
func (c *Client) SoftRebootInstance(id string) (*SimpleResponse, error) {
resp, err := c.SendPostRequest(fmt.Sprintf("/v2/instances/%s/soft_reboots", id), map[string]string{
"region": c.Region,
})
if err != nil {
return nil, decodeError(err)
}
response, err := c.DecodeSimpleResponse(resp)
return response, err
}
// StopInstance shuts the power down to the instance
func (c *Client) StopInstance(id string) (*SimpleResponse, error) {
resp, err := c.SendPutRequest(fmt.Sprintf("/v2/instances/%s/stop", id), map[string]string{
"region": c.Region,
})
if err != nil {
return nil, decodeError(err)
}
response, err := c.DecodeSimpleResponse(resp)
return response, err
}
// StartInstance starts the instance booting from the shutdown state
func (c *Client) StartInstance(id string) (*SimpleResponse, error) {
resp, err := c.SendPutRequest(fmt.Sprintf("/v2/instances/%s/start", id), map[string]string{
"region": c.Region,
})
if err != nil {
return nil, decodeError(err)
}
response, err := c.DecodeSimpleResponse(resp)
return response, err
}
// GetInstanceConsoleURL gets the web URL for an instance's console
func (c *Client) GetInstanceConsoleURL(id string) (string, error) {
resp, err := c.SendGetRequest(fmt.Sprintf("/v2/instances/%s/console", id))
if err != nil {
return "", decodeError(err)
}
console := InstanceConsole{}
err = json.NewDecoder(bytes.NewReader(resp)).Decode(&console)
return console.URL, err
}
// UpgradeInstance resizes the instance up to the new specification
// it's not possible to resize the instance to a smaller size
func (c *Client) UpgradeInstance(id, newSize string) (*SimpleResponse, error) {
resp, err := c.SendPutRequest(fmt.Sprintf("/v2/instances/%s/resize", id), map[string]string{
"size": newSize,
"region": c.Region,
})
if err != nil {
return nil, decodeError(err)
}
response, err := c.DecodeSimpleResponse(resp)
return response, err
}
// MovePublicIPToInstance moves a public IP to the specified instance
func (c *Client) MovePublicIPToInstance(id, ipAddress string) (*SimpleResponse, error) {
resp, err := c.SendPutRequest(fmt.Sprintf("/v2/instances/%s/ip/%s", id, ipAddress), "")
if err != nil {
return nil, decodeError(err)
}
response, err := c.DecodeSimpleResponse(resp)
return response, err
}
// SetInstanceFirewall changes the current firewall for an instance
func (c *Client) SetInstanceFirewall(id, firewallID string) (*SimpleResponse, error) {
resp, err := c.SendPutRequest(fmt.Sprintf("/v2/instances/%s/firewall", id), map[string]string{
"firewall_id": firewallID,
"region": c.Region,
})
if err != nil {
return nil, decodeError(err)
}
response, err := c.DecodeSimpleResponse(resp)
return response, err
}