/
s3.go
306 lines (236 loc) · 6.84 KB
/
s3.go
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// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0
package control
import (
bytes "bytes"
context "context"
"crypto/md5"
"database/sql"
"encoding/base64"
"encoding/hex"
fmt "fmt"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/s3"
"github.com/hashicorp/horizon/pkg/dbx"
"github.com/hashicorp/horizon/pkg/pb"
"github.com/jinzhu/gorm"
"github.com/lib/pq"
"github.com/pkg/errors"
)
func (s *Server) calculateAccountRouting(ctx context.Context, gdb *sql.DB, account *pb.Account, action string) ([]byte, error) {
s.L.Debug("calculate account routing", "action", action, "account", account.SpecString())
ts := time.Now()
defer func() {
s.L.Debug("calculate account routing ended", "action", action, "account", account.SpecString(), "elapse", time.Since(ts))
}()
key := account.Key()
var lastId int64
var accountServices pb.AccountServices
// See https://www.citusdata.com/blog/2016/03/30/five-ways-to-paginate/ for decisions
// on why we use this particular method to get all the records for an account. It's
// important to note that there is an index on (account,id) on the services table
// that allows this query to scan the index it's natural order.
for {
// Gotta poll the context since database/sql and gorm don't expose a context
select {
case <-ctx.Done():
return nil, ctx.Err()
default:
}
rows, err := gdb.QueryContext(ctx, "SELECT id, hub_id, service_id, labels, type FROM services WHERE account_id = $1 AND id > $2 LIMIT 1000", key, lastId)
if err != nil {
return nil, err
}
var (
hubId []byte
serviceId []byte
labels pq.StringArray
typ string
cnt int
)
for rows.Next() {
cnt++
err = rows.Scan(&lastId, &hubId, &serviceId, &labels, &typ)
if err != nil {
return nil, err
}
var ls pb.LabelSet
err = ls.Scan(labels)
if err != nil {
return nil, err
}
accountServices.Services = append(accountServices.Services, &pb.ServiceRoute{
Hub: pb.ULIDFromBytes(hubId),
Id: pb.ULIDFromBytes(serviceId),
Type: typ,
Labels: &ls,
})
}
if cnt == 0 {
break
}
}
data, err := accountServices.Marshal()
if err != nil {
return nil, err
}
return zstdCompress(data)
}
func (s *Server) updateAccountRouting(ctx context.Context, db *sql.DB, account *pb.Account, action string) error {
ts := time.Now()
s.L.Debug("updating account routing", "action", action, "account", account.SpecString())
defer func() {
s.m.MeasureSince([]string{"routing", "update_time"}, ts)
s.L.Debug("updating account routing ended", "action", action, "account", account.SpecString(), "elapse", time.Since(ts))
}()
outData, err := s.calculateAccountRouting(ctx, db, account, "initial-update")
if err != nil {
return err
}
h := md5.New()
h.Write(outData)
sum := h.Sum(nil)
accountKey := account.HashKey()
key := fmt.Sprintf("account_services/%s", accountKey)
lockKey := "account-" + accountKey
strMD5 := base64.StdEncoding.EncodeToString(sum)
var retry int
for {
lock, err := s.lockMgr.GetLock(lockKey, strMD5)
if err == nil {
defer lock.Close()
break
}
info, err := s.lockMgr.GetValue(lockKey)
if err != nil {
return err
}
if info == strMD5 {
// Ok, someone else got all the records, PEACE OUT.
return nil
}
s.L.Info("detected account locked, sleep and retry", "retries", retry)
retry++
time.Sleep(time.Second)
outData, err := s.calculateAccountRouting(ctx, db, account, "retry")
if err != nil {
return err
}
h := md5.New()
h.Write(outData)
sum := h.Sum(nil)
strMD5 = base64.StdEncoding.EncodeToString(sum)
continue
}
s3obj := s3.New(s.awsSess)
inputEtag := base64.StdEncoding.EncodeToString(sum)
putIn := &s3.PutObjectInput{
ACL: aws.String("private"),
Body: bytes.NewReader(outData),
ContentMD5: aws.String(inputEtag),
ContentType: aws.String("application/horizon"),
Bucket: &s.bucket,
Key: &key,
Tagging: aws.String("usage=horizon"),
}
if s.kmsKeyId != "" {
putIn.SSEKMSKeyId = aws.String(s.kmsKeyId)
putIn.ServerSideEncryption = aws.String("aws:kms")
}
putOut, err := s3obj.PutObject(putIn)
if err != nil {
return errors.Wrapf(err, "unable to upload object")
}
outet := *putOut.ETag
outSum, err := hex.DecodeString(outet[1 : len(outet)-1])
if err != nil {
return err
}
if !bytes.Equal(sum, outSum) {
return fmt.Errorf("corruption detected, wrong etag: %s / %s", hex.EncodeToString(sum), outet)
}
return nil
}
func (s *Server) updateLabelLinks(ctx context.Context) error {
lastId := 0
lls := make([]*LabelLink, 0, 100)
var out pb.LabelLinks
for {
err := dbx.Check(s.db.Where("id > ?", lastId).Limit(100).Find(&lls))
if err != nil {
if err == gorm.ErrRecordNotFound {
s.L.Info("end of label link loop cursor reached", "last-id", lastId)
break
}
s.L.Error("error returned from label_link cursor", "error", err)
}
if len(lls) == 0 {
s.L.Info("label link cursor returned no new values, done", "last-id", lastId)
break
}
for _, ll := range lls {
account, err := pb.AccountFromKey(ll.AccountID)
if err != nil {
s.L.Error("error parsing label-link account", "error", err)
return err
}
var acc Account
err = dbx.Check(s.db.First(&acc, ll.AccountID))
if err != nil {
s.L.Error("error reading label-link account", "error", err, "acconut", string(ll.AccountID))
return err
}
var pblimit pb.Account_Limits
acc.Data.Get("limits", &pblimit)
out.LabelLinks = append(out.LabelLinks, &pb.LabelLink{
Account: account,
Labels: ExplodeLabels(ll.Labels),
Target: ExplodeLabels(ll.Target),
Limits: &pblimit,
})
}
lastId = lls[len(lls)-1].ID
lls = lls[:0]
}
data, err := out.Marshal()
if err != nil {
return err
}
outData, err := zstdCompress(data)
if err != nil {
return err
}
h := md5.New()
h.Write(outData)
sum := h.Sum(nil)
s3obj := s3.New(s.awsSess)
inputEtag := base64.StdEncoding.EncodeToString(sum)
putIn := &s3.PutObjectInput{
ACL: aws.String("private"),
Body: bytes.NewReader(outData),
ContentMD5: aws.String(inputEtag),
ContentType: aws.String("application/horizon"),
Bucket: &s.bucket,
Key: aws.String("label_links"),
Tagging: aws.String("usage=horizon"),
}
if s.kmsKeyId != "" {
putIn.SSEKMSKeyId = aws.String(s.kmsKeyId)
putIn.ServerSideEncryption = aws.String("aws:kms")
}
putOut, err := s3obj.PutObject(putIn)
if err != nil {
return errors.Wrapf(err, "unable to upload object")
}
outet := *putOut.ETag
outSum, err := hex.DecodeString(outet[1 : len(outet)-1])
if err != nil {
return err
}
if !bytes.Equal(sum, outSum) {
return fmt.Errorf("corruption detected, wrong etag: %s / %s", hex.EncodeToString(sum), outet)
}
s.L.Info("updated label links", "etag", outet, "size", len(outData), "last-id", lastId)
return nil
}