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package S3Sink
import (
"context"
"fmt"
"strings"
"sync"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/s3"
"github.com/aws/aws-sdk-go/service/s3/s3iface"
"github.com/chrislusf/seaweedfs/weed/filer"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/replication/sink"
"github.com/chrislusf/seaweedfs/weed/replication/source"
"github.com/chrislusf/seaweedfs/weed/util"
)
type S3Sink struct {
conn s3iface.S3API
region string
bucket string
dir string
endpoint string
acl string
filerSource *source.FilerSource
isIncremental bool
}
func init() {
sink.Sinks = append(sink.Sinks, &S3Sink{})
}
func (s3sink *S3Sink) GetName() string {
return "s3"
}
func (s3sink *S3Sink) GetSinkToDirectory() string {
return s3sink.dir
}
func (s3sink *S3Sink) IsIncremental() bool {
return s3sink.isIncremental
}
func (s3sink *S3Sink) Initialize(configuration util.Configuration, prefix string) error {
glog.V(0).Infof("sink.s3.region: %v", configuration.GetString(prefix+"region"))
glog.V(0).Infof("sink.s3.bucket: %v", configuration.GetString(prefix+"bucket"))
glog.V(0).Infof("sink.s3.directory: %v", configuration.GetString(prefix+"directory"))
glog.V(0).Infof("sink.s3.endpoint: %v", configuration.GetString(prefix+"endpoint"))
glog.V(0).Infof("sink.s3.acl: %v", configuration.GetString(prefix+"acl"))
glog.V(0).Infof("sink.s3.is_incremental: %v", configuration.GetString(prefix+"is_incremental"))
s3sink.isIncremental = configuration.GetBool(prefix + "is_incremental")
return s3sink.initialize(
configuration.GetString(prefix+"aws_access_key_id"),
configuration.GetString(prefix+"aws_secret_access_key"),
configuration.GetString(prefix+"region"),
configuration.GetString(prefix+"bucket"),
configuration.GetString(prefix+"directory"),
configuration.GetString(prefix+"endpoint"),
configuration.GetString(prefix+"acl"),
)
}
func (s3sink *S3Sink) SetSourceFiler(s *source.FilerSource) {
s3sink.filerSource = s
}
func (s3sink *S3Sink) initialize(awsAccessKeyId, awsSecretAccessKey, region, bucket, dir, endpoint, acl string) error {
s3sink.region = region
s3sink.bucket = bucket
s3sink.dir = dir
s3sink.endpoint = endpoint
s3sink.acl = acl
config := &aws.Config{
Region: aws.String(s3sink.region),
Endpoint: aws.String(s3sink.endpoint),
S3ForcePathStyle: aws.Bool(true),
S3DisableContentMD5Validation: aws.Bool(true),
}
if awsAccessKeyId != "" && awsSecretAccessKey != "" {
config.Credentials = credentials.NewStaticCredentials(awsAccessKeyId, awsSecretAccessKey, "")
}
sess, err := session.NewSession(config)
if err != nil {
return fmt.Errorf("create aws session: %v", err)
}
s3sink.conn = s3.New(sess)
return nil
}
func (s3sink *S3Sink) DeleteEntry(key string, isDirectory, deleteIncludeChunks bool, signatures []int32) error {
key = cleanKey(key)
if isDirectory {
key = key + "/"
}
return s3sink.deleteObject(key)
}
func (s3sink *S3Sink) CreateEntry(key string, entry *filer_pb.Entry, signatures []int32) error {
key = cleanKey(key)
if entry.IsDirectory {
return nil
}
uploadId, err := s3sink.createMultipartUpload(key, entry)
if err != nil {
return fmt.Errorf("createMultipartUpload: %v", err)
}
totalSize := filer.FileSize(entry)
chunkViews := filer.ViewFromChunks(s3sink.filerSource.LookupFileId, entry.Chunks, 0, int64(totalSize))
parts := make([]*s3.CompletedPart, len(chunkViews))
var wg sync.WaitGroup
for chunkIndex, chunk := range chunkViews {
partId := chunkIndex + 1
wg.Add(1)
go func(chunk *filer.ChunkView, index int) {
defer wg.Done()
if part, uploadErr := s3sink.uploadPart(key, uploadId, partId, chunk); uploadErr != nil {
err = uploadErr
glog.Errorf("uploadPart: %v", uploadErr)
} else {
parts[index] = part
}
}(chunk, chunkIndex)
}
wg.Wait()
if err != nil {
s3sink.abortMultipartUpload(key, uploadId)
return fmt.Errorf("uploadPart: %v", err)
}
return s3sink.completeMultipartUpload(context.Background(), key, uploadId, parts)
}
func (s3sink *S3Sink) UpdateEntry(key string, oldEntry *filer_pb.Entry, newParentPath string, newEntry *filer_pb.Entry, deleteIncludeChunks bool, signatures []int32) (foundExistingEntry bool, err error) {
key = cleanKey(key)
return true, s3sink.CreateEntry(key, newEntry, signatures)
}
func cleanKey(key string) string {
if strings.HasPrefix(key, "/") {
key = key[1:]
}
return key
}
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