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main.go
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main.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 main
import (
"context"
"sync"
"github.com/aws/aws-lambda-go/lambda"
"github.com/aws/aws-sdk-go/aws"
"github.com/rs/zerolog/log"
"github.com/capitalone/cloud-custodian/tools/omnissm/pkg/aws/configservice"
"github.com/capitalone/cloud-custodian/tools/omnissm/pkg/aws/ssm"
"github.com/capitalone/cloud-custodian/tools/omnissm/pkg/omnissm"
)
var omni *omnissm.OmniSSM
func init() {
config, err := omnissm.ReadConfig("config.yaml")
if err != nil {
panic(err)
}
omni, err = omnissm.New(config)
if err != nil {
panic(err)
}
}
func groupEntriesByAccountIdAndRegion(entries []*omnissm.RegistrationEntry) map[string][]*omnissm.RegistrationEntry {
entriesByKey := make(map[string][]*omnissm.RegistrationEntry)
for _, entry := range entries {
entriesByKey[entry.AccountId+entry.Region] = append(entriesByKey[entry.AccountId+entry.Region], entry)
}
return entriesByKey
}
func main() {
lambda.Start(func(ctx context.Context) error {
entries, err := omni.Registrations.QueryIndexes(ctx, []omnissm.QueryIndexInput{
{"IsTagged-index", "IsTagged", "0"},
{"IsInventoried-index", "IsInventoried", "0"},
}...)
if err != nil {
return err
}
entriesByKey := groupEntriesByAccountIdAndRegion(entries)
var wg sync.WaitGroup
for _, entries := range entriesByKey {
wg.Add(1)
accountId, region := entries[0].AccountId, entries[0].Region
go func(awsConfig *aws.Config, accountId string, entries []*omnissm.RegistrationEntry) {
defer wg.Done()
// if the accountId is not in the roleMap, the lambda execution
// role will be used
roleArn, ok := omni.HasAssumeRole(accountId)
if !ok {
log.Info().Msgf("account %#v not found in role map", accountId)
}
cs := configservice.New(&configservice.Config{
Config: awsConfig,
AssumeRole: roleArn,
})
var i, j int
for _, entry := range entries {
ci, err := cs.GetLatestResourceConfig(ctx, "AWS::EC2::Instance", entry.InstanceId)
if err != nil {
log.Info().Err(err).Msg("configservice.GetLatestResourceConfig failed")
continue
}
if !ssm.IsManagedInstance(entry.ManagedId) {
m, err := omni.SSM.DescribeInstanceInformation(ctx, entry.ActivationId)
if err != nil {
log.Info().Err(err).Msg("")
continue
}
if !ssm.IsManagedInstance(m.ManagedId) {
log.Info().Msgf("invalid ManagedId: %#v", m.ManagedId)
continue
}
entry.ManagedId = m.ManagedId
if err := omni.Registrations.Put(ctx, entry); err != nil {
log.Info().Err(err).Msg("")
continue
}
}
if entry.IsTagged == 0 {
tags := make(map[string]string)
for k, v := range ci.Tags {
if !omni.HasResourceTag(k) {
continue
}
tags[k] = v
}
tags["AccountId"] = ci.AWSAccountId
tags["VPCId"] = ci.Configuration.VPCId
tags["SubnetId"] = ci.Configuration.SubnetId
err := omni.SQS.Send(ctx, &omnissm.DeferredActionMessage{
Type: omnissm.AddTagsToResource,
Value: &ssm.ResourceTags{
ManagedId: entry.ManagedId,
Tags: tags,
},
})
if err == nil {
i++
} else {
log.Info().Err(err).Msg("unable to defer AddTagsToResource")
}
}
if entry.IsInventoried == 0 {
err := omni.SQS.Send(ctx, &omnissm.DeferredActionMessage{
Type: omnissm.PutInventory,
Value: &ssm.CustomInventory{
TypeName: "Custom:CloudInfo",
ManagedId: entry.ManagedId,
CaptureTime: ci.ConfigurationItemCaptureTime,
Content: configservice.ConfigurationItemContentMap(*ci),
},
})
if err == nil {
j++
} else {
log.Info().Err(err).Msg("unable to defer PutInventory")
}
}
}
if i+j > 0 {
log.Info().Str("accountId", accountId).
Int("AddTagsToResource", i).
Int("PutInventory", j).
Msg("enqueued deferred actions")
}
}(omni.Config.Copy().WithRegion(region), accountId, entries)
}
wg.Wait()
return nil
})
}