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ssm.go
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ssm.go
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// Copyright 2018 Capital One Services, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ssm
import (
"context"
"crypto/md5"
"encoding/json"
"fmt"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/ssm"
"github.com/aws/aws-sdk-go/service/ssm/ssmiface"
"github.com/golang/time/rate"
"github.com/pkg/errors"
)
type Config struct {
*aws.Config
InstanceRole string
}
type SSM struct {
ssmiface.SSMAPI
config *Config
ssmRate *rate.Limiter
}
func New(config *Config) *SSM {
s := &SSM{
SSMAPI: ssm.New(session.New(config.Config)),
config: config,
ssmRate: rate.NewLimiter(5, 5),
}
return s
}
type Activation struct {
ActivationId string `json:"ActivationId"`
ActivationCode string `json:"ActivationCode"`
}
func (s *SSM) CreateActivation(ctx context.Context, name string) (*Activation, error) {
s.ssmRate.Wait(context.TODO())
resp, err := s.SSMAPI.CreateActivationWithContext(ctx, &ssm.CreateActivationInput{
DefaultInstanceName: aws.String(name),
IamRole: aws.String(s.config.InstanceRole),
Description: aws.String(name),
})
if err != nil {
return nil, errors.Wrapf(err, "ssm.CreateActivation failed: %#v", name)
}
return &Activation{*resp.ActivationId, *resp.ActivationCode}, nil
}
type ResourceTags struct {
ManagedId string `json:"ManagedId"`
Tags map[string]string `json:"Tags"`
}
func (s *SSM) AddTagsToResource(ctx context.Context, input *ResourceTags) error {
awsTags := make([]*ssm.Tag, 0)
for k, v := range input.Tags {
v = SanitizeTag(v)
if v == "" {
continue
}
awsTags = append(awsTags, &ssm.Tag{Key: aws.String(k), Value: aws.String(v)})
}
if len(awsTags) == 0 {
return nil
}
s.ssmRate.Wait(ctx)
_, err := s.SSMAPI.AddTagsToResourceWithContext(ctx, &ssm.AddTagsToResourceInput{
ResourceType: aws.String(ssm.ResourceTypeForTaggingManagedInstance),
ResourceId: aws.String(input.ManagedId),
Tags: awsTags,
})
return errors.Wrapf(err, "ssm.AddTagsToResource failed: %#v", input.ManagedId)
}
type CustomInventory struct {
TypeName string
ManagedId string
CaptureTime string
Content map[string]string
}
func (c *CustomInventory) ContentHash() string {
data, _ := json.Marshal(c.Content)
return fmt.Sprintf("%x", md5.Sum(data))
}
func (s *SSM) PutInventory(ctx context.Context, inv *CustomInventory) error {
s.ssmRate.Wait(ctx)
_, err := s.SSMAPI.PutInventoryWithContext(ctx, &ssm.PutInventoryInput{
InstanceId: aws.String(inv.ManagedId),
Items: []*ssm.InventoryItem{{
CaptureTime: aws.String(inv.CaptureTime), // "2006-01-02T15:04:05Z"
Content: []map[string]*string{aws.StringMap(inv.Content)},
ContentHash: aws.String(inv.ContentHash()),
SchemaVersion: aws.String("1.0"),
TypeName: aws.String(inv.TypeName),
}},
})
return errors.Wrapf(err, "ssm.PutInventory failed: %#v", inv.ManagedId)
}
func (s *SSM) DeregisterManagedInstance(ctx context.Context, managedId string) error {
s.ssmRate.Wait(context.TODO())
_, err := s.SSMAPI.DeregisterManagedInstanceWithContext(ctx, &ssm.DeregisterManagedInstanceInput{
InstanceId: aws.String(managedId),
})
return errors.Wrapf(err, "ssm.DeregisterManagedInstance failed: %#v", managedId)
}
type ManagedInstance struct {
ActivationId string
ManagedId string
Name string
RegistrationDate time.Time
}
func (s *SSM) DescribeInstanceInformation(ctx context.Context, activationId string) (*ManagedInstance, error) {
resp, err := s.SSMAPI.DescribeInstanceInformationWithContext(ctx, &ssm.DescribeInstanceInformationInput{
InstanceInformationFilterList: []*ssm.InstanceInformationFilter{
{
Key: aws.String(ssm.InstanceInformationFilterKeyActivationIds),
ValueSet: aws.StringSlice([]string{activationId}),
},
},
MaxResults: aws.Int64(5),
})
if err != nil {
return nil, errors.Wrapf(err, "ssm.DescribeInstanceInformation failed: %#v", activationId)
}
for _, instance := range resp.InstanceInformationList {
m := &ManagedInstance{
ActivationId: aws.StringValue(instance.ActivationId),
ManagedId: aws.StringValue(instance.InstanceId),
Name: aws.StringValue(instance.Name),
RegistrationDate: aws.TimeValue(instance.RegistrationDate),
}
return m, nil
}
return nil, errors.Errorf("activation not found: %#v", activationId)
}