/
ebs.go
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/
ebs.go
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// Nebulant
// Copyright (C) 2020 Develatio Technologies S.L.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package actors
import (
"encoding/json"
"fmt"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/service/ec2"
"github.com/develatio/nebulant-cli/base"
"github.com/develatio/nebulant-cli/blueprint"
)
// FindVolumes func
func FindVolumes(ctx *ActionContext) (*base.ActionOutput, error) {
var err error
awsinput := new(ec2.DescribeVolumesInput)
if err := CleanInput(ctx.Action, awsinput); err != nil {
return nil, err
}
if ctx.Rehearsal {
return nil, nil
}
err = ctx.Store.DeepInterpolation(awsinput)
if err != nil {
return nil, err
}
region := ctx.AwsSess.Config.Region
ctx.Logger.LogInfo("Looking for volumes in region " + *region)
svc := ctx.NewEC2Client()
result, err := svc.DescribeVolumes(awsinput)
if err != nil {
return nil, err
}
aout := base.NewActionOutput(ctx.Action, result, nil)
return aout, nil
}
// FindOneVolume func
func FindOneVolume(ctx *ActionContext) (*base.ActionOutput, error) {
aout, err := FindVolumes(ctx)
if err != nil {
return nil, err
}
if ctx.Rehearsal {
return nil, nil
}
raw := aout.Records[0].Value.(*ec2.DescribeVolumesOutput)
found := len(raw.Volumes)
if found > 1 {
return nil, fmt.Errorf("too many results")
}
if found <= 0 {
return nil, fmt.Errorf("no volume found")
}
aout = base.NewActionOutput(ctx.Action, raw.Volumes[0], raw.Volumes[0].VolumeId)
return aout, nil
}
// CreateVolume func
func CreateVolume(ctx *ActionContext) (*base.ActionOutput, error) {
awsinput := new(ec2.CreateVolumeInput)
if err := CleanInput(ctx.Action, awsinput); err != nil {
return nil, err
}
internalparams := new(blueprint.InternalParameters)
err := json.Unmarshal(ctx.Action.Parameters, internalparams)
if err != nil {
return nil, err
}
if ctx.Rehearsal {
return nil, nil
}
// awsinput.AvailabilityZone can be nil because its a pointer
if awsinput.AvailabilityZone == nil {
defaultAvZone := *ctx.AwsSess.Config.Region + "a"
awsinput.AvailabilityZone = &defaultAvZone
}
svc := ctx.NewEC2Client()
vol, err := svc.CreateVolume(awsinput) // ec2.Volume
if err != nil {
if aerr, ok := err.(awserr.Error); ok {
switch aerr.Code() {
default:
return nil, aerr
}
} else {
return nil, err
}
}
if internalparams.Waiters != nil {
waitinput := &ec2.DescribeVolumesInput{
VolumeIds: []*string{vol.VolumeId},
}
for _, waitername := range internalparams.Waiters {
switch waitername {
case "WaitUntilVolumeAvailable":
ctx.Logger.LogInfo("Waiting for volume to be available...")
err = svc.WaitUntilVolumeAvailable(waitinput)
if err != nil {
return nil, err
}
default:
return nil, fmt.Errorf("unkown waiter")
}
}
}
aout := base.NewActionOutput(ctx.Action, vol, vol.VolumeId)
return aout, nil
}
// AttachVolume func
func AttachVolume(ctx *ActionContext) (*base.ActionOutput, error) {
// perform attach
var err error
svc := ctx.NewEC2Client()
awsinput := new(ec2.AttachVolumeInput)
if err := CleanInput(ctx.Action, awsinput); err != nil {
return nil, err
}
internalparams := new(blueprint.InternalParameters)
err = json.Unmarshal(ctx.Action.Parameters, internalparams)
if err != nil {
return nil, err
}
if ctx.Rehearsal {
return nil, nil
}
err = ctx.Store.DeepInterpolation(awsinput)
if err != nil {
return nil, err
}
result, err := svc.AttachVolume(awsinput)
if err != nil {
return nil, err
}
if internalparams.Waiters != nil {
waitinput := &ec2.DescribeVolumesInput{
VolumeIds: []*string{awsinput.VolumeId},
}
for _, waitername := range internalparams.Waiters {
switch waitername {
case "WaitUntilVolumeInUse":
ctx.Logger.LogInfo("Waiting for volume to be attached...")
err = svc.WaitUntilVolumeInUse(waitinput)
if err != nil {
return nil, err
}
default:
return nil, fmt.Errorf("unkown waiter")
}
}
}
// Return nil, nil?
aout := base.NewActionOutput(ctx.Action, result, nil)
return aout, nil
}
// DetachVolume func
func DetachVolume(ctx *ActionContext) (*base.ActionOutput, error) {
var err error
awsinput := new(ec2.DetachVolumeInput)
if err := CleanInput(ctx.Action, awsinput); err != nil {
return nil, err
}
if ctx.Rehearsal {
return nil, nil
}
err = ctx.Store.DeepInterpolation(awsinput)
if err != nil {
return nil, err
}
svc := ctx.NewEC2Client()
result, err := svc.DetachVolume(awsinput)
if err != nil {
return nil, err
}
aout := base.NewActionOutput(ctx.Action, result, nil)
return aout, nil
}
// DeleteVolume func
func DeleteVolume(ctx *ActionContext) (*base.ActionOutput, error) {
var err error
awsinput := new(ec2.DeleteVolumeInput)
if err := CleanInput(ctx.Action, awsinput); err != nil {
return nil, err
}
internalparams := new(blueprint.InternalParameters)
err = json.Unmarshal(ctx.Action.Parameters, internalparams)
if err != nil {
return nil, err
}
if ctx.Rehearsal {
return nil, nil
}
err = ctx.Store.DeepInterpolation(awsinput)
if err != nil {
return nil, err
}
svc := ctx.NewEC2Client()
_, err = svc.DeleteVolume(awsinput)
if err != nil {
return nil, err
}
if internalparams.Waiters != nil {
waitinput := &ec2.DescribeVolumesInput{
VolumeIds: []*string{awsinput.VolumeId},
}
for _, waitername := range internalparams.Waiters {
switch waitername {
case "WaitUntilVolumeDeleted":
ctx.Logger.LogInfo("Waiting for volume to be deleted...")
err = svc.WaitUntilVolumeDeleted(waitinput)
if err != nil {
return nil, err
}
default:
return nil, fmt.Errorf("unkown waiter")
}
}
}
return nil, nil
}