seaweedfs/weed/replication/sink/s3sink/s3_sink.go

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package S3Sink
import (
"fmt"
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"strings"
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"sync"
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"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/credentials"
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"github.com/aws/aws-sdk-go/aws/session"
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"github.com/aws/aws-sdk-go/service/s3"
"github.com/aws/aws-sdk-go/service/s3/s3iface"
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"github.com/chrislusf/seaweedfs/weed/filer2"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"github.com/chrislusf/seaweedfs/weed/replication/sink"
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"github.com/chrislusf/seaweedfs/weed/replication/source"
"github.com/chrislusf/seaweedfs/weed/util"
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)
type S3Sink struct {
conn s3iface.S3API
region string
bucket string
dir string
filerSource *source.FilerSource
}
func init() {
sink.Sinks = append(sink.Sinks, &S3Sink{})
}
func (s3sink *S3Sink) GetName() string {
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return "s3"
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}
func (s3sink *S3Sink) GetSinkToDirectory() string {
return s3sink.dir
}
func (s3sink *S3Sink) Initialize(configuration util.Configuration) error {
glog.V(0).Infof("sink.s3.region: %v", configuration.GetString("region"))
glog.V(0).Infof("sink.s3.bucket: %v", configuration.GetString("bucket"))
glog.V(0).Infof("sink.s3.directory: %v", configuration.GetString("directory"))
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return s3sink.initialize(
configuration.GetString("aws_access_key_id"),
configuration.GetString("aws_secret_access_key"),
configuration.GetString("region"),
configuration.GetString("bucket"),
configuration.GetString("directory"),
)
}
func (s3sink *S3Sink) SetSourceFiler(s *source.FilerSource) {
s3sink.filerSource = s
}
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func (s3sink *S3Sink) initialize(awsAccessKeyId, aswSecretAccessKey, region, bucket, dir string) error {
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s3sink.region = region
s3sink.bucket = bucket
s3sink.dir = dir
config := &aws.Config{
Region: aws.String(s3sink.region),
}
if awsAccessKeyId != "" && aswSecretAccessKey != "" {
config.Credentials = credentials.NewStaticCredentials(awsAccessKeyId, aswSecretAccessKey, "")
}
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) error {
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key = cleanKey(key)
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if isDirectory {
key = key + "/"
}
return s3sink.deleteObject(key)
}
func (s3sink *S3Sink) CreateEntry(key string, entry *filer_pb.Entry) error {
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key = cleanKey(key)
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if entry.IsDirectory {
return nil
}
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uploadId, err := s3sink.createMultipartUpload(key, entry)
if err != nil {
return err
}
totalSize := filer2.TotalSize(entry.Chunks)
chunkViews := filer2.ViewFromChunks(entry.Chunks, 0, int(totalSize))
var parts []*s3.CompletedPart
var wg sync.WaitGroup
for chunkIndex, chunk := range chunkViews {
partId := chunkIndex + 1
wg.Add(1)
go func(chunk *filer2.ChunkView) {
defer wg.Done()
if part, uploadErr := s3sink.uploadPart(key, uploadId, partId, chunk); uploadErr != nil {
err = uploadErr
} else {
parts = append(parts, part)
}
}(chunk)
}
wg.Wait()
if err != nil {
s3sink.abortMultipartUpload(key, uploadId)
return err
}
return s3sink.completeMultipartUpload(key, uploadId, parts)
}
func (s3sink *S3Sink) UpdateEntry(key string, oldEntry, newEntry *filer_pb.Entry, deleteIncludeChunks bool) (foundExistingEntry bool, err error) {
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key = cleanKey(key)
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// TODO improve efficiency
return false, nil
}
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func cleanKey(key string) string {
if strings.HasPrefix(key, "/") {
key = key[1:]
}
return key
}