Browse Source

AclHandlers

pull/2380/head
Konstantin Lebedev 3 years ago
parent
commit
be4b3ed509
  1. 45
      docker/compose/local-cluster-compose.yml
  2. 27
      weed/filer/filer_conf.go
  3. 25
      weed/s3api/auth_credentials.go
  4. 77
      weed/s3api/s3api_bucket_handlers.go
  5. 1
      weed/s3api/s3api_handlers.go
  6. 8
      weed/s3api/s3api_object_skip_handlers.go
  7. 88
      weed/s3api/s3api_policy.go
  8. 22
      weed/s3api/s3api_server.go
  9. 16
      weed/s3api/s3api_xsd_generated.go
  10. 6
      weed/s3api/s3err/s3api_errors.go
  11. 19
      weed/shell/command_fs_configure.go

45
docker/compose/local-cluster-compose.yml

@ -6,25 +6,37 @@ services:
ports: ports:
- 9333:9333 - 9333:9333
- 19333:19333 - 19333:19333
command: "master -ip=master0 -port=9333 -peers=master0:9333,master1:9334,master2:9335 -mdir=/data/m1"
command: "-v=1 master -volumeSizeLimitMB 100 -resumeState=false -ip=master0 -port=9333 -peers=master0:9333,master1:9334,master2:9335 -mdir=/tmp"
environment:
WEED_MASTER_VOLUME_GROWTH_COPY_1: 1
WEED_MASTER_VOLUME_GROWTH_COPY_2: 2
WEED_MASTER_VOLUME_GROWTH_COPY_OTHER: 1
master1: master1:
image: chrislusf/seaweedfs:local image: chrislusf/seaweedfs:local
ports: ports:
- 9334:9334 - 9334:9334
- 19334:19334 - 19334:19334
command: "master -ip=master1 -port=9334 -peers=master0:9333,master1:9334,master2:9335 -mdir=/data/m2"
command: "-v=1 master -volumeSizeLimitMB 100 -resumeState=false -ip=master1 -port=9334 -peers=master0:9333,master1:9334,master2:9335 -mdir=/tmp"
environment:
WEED_MASTER_VOLUME_GROWTH_COPY_1: 1
WEED_MASTER_VOLUME_GROWTH_COPY_2: 2
WEED_MASTER_VOLUME_GROWTH_COPY_OTHER: 1
master2: master2:
image: chrislusf/seaweedfs:local image: chrislusf/seaweedfs:local
ports: ports:
- 9335:9335 - 9335:9335
- 19335:19335 - 19335:19335
command: "master -ip=master2 -port=9335 -peers=master0:9333,master1:9334,master2:9335 -mdir=/data/m3"
command: "-v=1 master -volumeSizeLimitMB 100 -resumeState=false -ip=master2 -port=9335 -peers=master0:9333,master1:9334,master2:9335 -mdir=/tmp"
environment:
WEED_MASTER_VOLUME_GROWTH_COPY_1: 1
WEED_MASTER_VOLUME_GROWTH_COPY_2: 2
WEED_MASTER_VOLUME_GROWTH_COPY_OTHER: 1
volume1: volume1:
image: chrislusf/seaweedfs:local image: chrislusf/seaweedfs:local
ports: ports:
- 8080:8080 - 8080:8080
- 18080:18080 - 18080:18080
command: 'volume -mserver="master0:9333,master1:9334,master2:9335" -port=8080 -ip=volume1 -publicUrl=localhost:8080 -preStopSeconds=1 -disk=ssd1'
command: 'volume -dataCenter dc1 -rack v1 -mserver="master0:9333,master1:9334,master2:9335" -port=8080 -ip=volume1 -publicUrl=localhost:8080 -preStopSeconds=1'
depends_on: depends_on:
- master0 - master0
- master1 - master1
@ -34,7 +46,7 @@ services:
ports: ports:
- 8082:8082 - 8082:8082
- 18082:18082 - 18082:18082
command: 'volume -mserver="master0:9333,master1:9334,master2:9335" -port=8082 -ip=volume2 -publicUrl=localhost:8082 -preStopSeconds=1 -disk=ssd1'
command: 'volume -dataCenter dc2 -rack v2 -mserver="master0:9333,master1:9334,master2:9335" -port=8082 -ip=volume2 -publicUrl=localhost:8082 -preStopSeconds=1'
depends_on: depends_on:
- master0 - master0
- master1 - master1
@ -44,7 +56,7 @@ services:
ports: ports:
- 8083:8083 - 8083:8083
- 18083:18083 - 18083:18083
command: 'volume -mserver="master0:9333,master1:9334,master2:9335" -port=8083 -ip=volume3 -publicUrl=localhost:8083 -preStopSeconds=1'
command: 'volume -dataCenter dc3 -rack v3 -mserver="master0:9333,master1:9334,master2:9335" -port=8083 -ip=volume3 -publicUrl=localhost:8083 -preStopSeconds=1'
depends_on: depends_on:
- master0 - master0
- master1 - master1
@ -54,7 +66,8 @@ services:
ports: ports:
- 8888:8888 - 8888:8888
- 18888:18888 - 18888:18888
command: 'filer -master="master0:9333,master1:9334,master2:9335"'
- 8111:8111
command: 'filer -defaultReplicaPlacement 000 -iam -master="master0:9333,master1:9334,master2:9335"'
depends_on: depends_on:
- master0 - master0
- master1 - master1
@ -65,7 +78,7 @@ services:
image: chrislusf/seaweedfs:local image: chrislusf/seaweedfs:local
ports: ports:
- 8333:8333 - 8333:8333
command: 's3 -filer="filer:8888"'
command: '-v=9 s3 -filer="filer:8888"'
depends_on: depends_on:
- master0 - master0
- master1 - master1
@ -73,3 +86,19 @@ services:
- volume1 - volume1
- volume2 - volume2
- filer - filer
minio:
image: minio/minio
ports:
- 9000:9000
command: 'minio server /data'
environment:
MINIO_ACCESS_KEY: "some_access_key1"
MINIO_SECRET_KEY: "some_secret_key1"
depends_on:
- s3
nexus:
image: registry.tochka-tech.com/oci_nexus/nexus:v3.34.1-2
ports:
- 8081:8081
depends_on:
- s3

27
weed/filer/filer_conf.go

@ -3,6 +3,10 @@ package filer
import ( import (
"bytes" "bytes"
"context" "context"
"fmt"
"github.com/chrislusf/seaweedfs/weed/pb"
"github.com/chrislusf/seaweedfs/weed/wdclient"
"google.golang.org/grpc"
"io" "io"
"github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/glog"
@ -26,6 +30,29 @@ type FilerConf struct {
rules ptrie.Trie rules ptrie.Trie
} }
func ReadFilerConf(filerGrpcAddress pb.ServerAddress, grpcDialOption grpc.DialOption, masterClient *wdclient.MasterClient) (*FilerConf, error) {
var buf bytes.Buffer
if err := pb.WithGrpcFilerClient(filerGrpcAddress, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
if masterClient != nil {
return ReadEntry(masterClient, client, DirectoryEtcSeaweedFS, FilerConfName, &buf)
} else {
content, err := ReadInsideFiler(client, DirectoryEtcSeaweedFS, FilerConfName)
buf = *bytes.NewBuffer(content)
return err
}
}); err != nil && err != filer_pb.ErrNotFound {
return nil, fmt.Errorf("read %s/%s: %v", DirectoryEtcSeaweedFS, FilerConfName, err)
}
fc := NewFilerConf()
if buf.Len() > 0 {
if err := fc.LoadFromBytes(buf.Bytes()); err != nil {
return nil, fmt.Errorf("parse %s/%s: %v", DirectoryEtcSeaweedFS, FilerConfName, err)
}
}
return fc, nil
}
func NewFilerConf() (fc *FilerConf) { func NewFilerConf() (fc *FilerConf) {
fc = &FilerConf{ fc = &FilerConf{
rules: ptrie.New(), rules: ptrie.New(),

25
weed/s3api/auth_credentials.go

@ -37,6 +37,31 @@ type Credential struct {
SecretKey string SecretKey string
} }
func (action Action) isAdmin() bool {
return strings.HasPrefix(string(action), s3_constants.ACTION_ADMIN)
}
func (action Action) isOwner(bucket string) bool {
return string(action) == s3_constants.ACTION_ADMIN+":"+bucket
}
func (action Action) overBucket(bucket string) bool {
return strings.HasSuffix(string(action), ":"+bucket) || strings.HasSuffix(string(action), ":*")
}
func (action Action) getPermission() Permission {
switch act := strings.Split(string(action), ":")[0]; act {
case s3_constants.ACTION_ADMIN:
return Permission("FULL_CONTROL")
case s3_constants.ACTION_WRITE:
return Permission("WRITE")
case s3_constants.ACTION_READ:
return Permission("READ")
default:
return Permission("")
}
}
func NewIdentityAccessManagement(option *S3ApiServerOption) *IdentityAccessManagement { func NewIdentityAccessManagement(option *S3ApiServerOption) *IdentityAccessManagement {
iam := &IdentityAccessManagement{ iam := &IdentityAccessManagement{
domain: option.DomainName, domain: option.DomainName,

77
weed/s3api/s3api_bucket_handlers.go

@ -4,6 +4,7 @@ import (
"context" "context"
"encoding/xml" "encoding/xml"
"fmt" "fmt"
"github.com/chrislusf/seaweedfs/weed/filer"
"github.com/chrislusf/seaweedfs/weed/s3api/s3_constants" "github.com/chrislusf/seaweedfs/weed/s3api/s3_constants"
"math" "math"
"net/http" "net/http"
@ -205,3 +206,79 @@ func (s3a *S3ApiServer) hasAccess(r *http.Request, entry *filer_pb.Entry) bool {
} }
return true return true
} }
// GetBucketAclHandler Get Bucket ACL
// https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetBucketAcl.html
func (s3a *S3ApiServer) GetBucketAclHandler(w http.ResponseWriter, r *http.Request) {
// collect parameters
bucket, _ := getBucketAndObject(r)
glog.V(3).Infof("GetBucketAclHandler %s", bucket)
if err := s3a.checkBucket(r, bucket); err != s3err.ErrNone {
s3err.WriteErrorResponse(w, err, r)
return
}
response := AccessControlPolicy{}
for _, ident := range s3a.iam.identities {
if len(ident.Credentials) == 0 {
continue
}
for _, action := range ident.Actions {
if !action.overBucket(bucket) || action.getPermission() == "" {
continue
}
id := ident.Credentials[0].AccessKey
if response.Owner.DisplayName == "" && action.isOwner(bucket) && len(ident.Credentials) > 0 {
response.Owner.DisplayName = ident.Name
response.Owner.ID = id
}
response.AccessControlList.Grant = append(response.AccessControlList.Grant, Grant{
Grantee: Grantee{
ID: id,
DisplayName: ident.Name,
Type: "CanonicalUser",
XMLXSI: "CanonicalUser",
XMLNS: "http://www.w3.org/2001/XMLSchema-instance"},
Permission: action.getPermission(),
})
}
}
writeSuccessResponseXML(w, response)
}
// GetBucketLifecycleConfigurationHandler Get Bucket Lifecycle configuration
// https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetBucketLifecycleConfiguration.html
func (s3a *S3ApiServer) GetBucketLifecycleConfigurationHandler(w http.ResponseWriter, r *http.Request) {
// collect parameters
bucket, _ := getBucketAndObject(r)
glog.V(3).Infof("GetBucketAclHandler %s", bucket)
if err := s3a.checkBucket(r, bucket); err != s3err.ErrNone {
s3err.WriteErrorResponse(w, err, r)
return
}
fc, err := filer.ReadFilerConf(s3a.option.Filer, s3a.option.GrpcDialOption, nil)
if err != nil {
glog.Errorf("GetBucketLifecycleConfigurationHandler: %s", err)
s3err.WriteErrorResponse(w, s3err.ErrInternalError, r)
return
}
s3err.WriteErrorResponse(w, s3err.ErrNoSuchLifecycleConfiguration, r)
}
// PutBucketLifecycleConfigurationHandler Put Bucket Lifecycle configuration
// https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutBucketLifecycleConfiguration.html
func (s3a *S3ApiServer) PutBucketLifecycleConfigurationHandler(w http.ResponseWriter, r *http.Request) {
s3err.WriteErrorResponse(w, s3err.ErrNotImplemented, r)
}
// DeleteBucketMetricsConfiguration Delete Bucket Lifecycle
// https://docs.aws.amazon.com/AmazonS3/latest/API/API_DeleteBucketLifecycle.html
func (s3a *S3ApiServer) DeleteBucketLifecycleHandler(w http.ResponseWriter, r *http.Request) {
s3err.WriteErrorResponse(w, s3err.ErrNotImplemented, r)
}

1
weed/s3api/s3api_handlers.go

@ -21,6 +21,7 @@ func (s3a *S3ApiServer) WithFilerClient(fn func(filer_pb.SeaweedFilerClient) err
}, s3a.option.Filer.ToGrpcAddress(), s3a.option.GrpcDialOption) }, s3a.option.Filer.ToGrpcAddress(), s3a.option.GrpcDialOption)
} }
func (s3a *S3ApiServer) AdjustedUrl(location *filer_pb.Location) string { func (s3a *S3ApiServer) AdjustedUrl(location *filer_pb.Location) string {
return location.Url return location.Url
} }

8
weed/s3api/s3api_object_skip_handlers.go

@ -4,6 +4,14 @@ import (
"net/http" "net/http"
) )
// GetObjectAclHandler Put object ACL
// https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetObjectAcl.html
func (s3a *S3ApiServer) GetObjectAclHandler(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusNoContent)
}
// PutObjectAclHandler Put object ACL // PutObjectAclHandler Put object ACL
// https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutObjectAcl.html // https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutObjectAcl.html
func (s3a *S3ApiServer) PutObjectAclHandler(w http.ResponseWriter, r *http.Request) { func (s3a *S3ApiServer) PutObjectAclHandler(w http.ResponseWriter, r *http.Request) {

88
weed/s3api/s3api_policy.go

@ -0,0 +1,88 @@
package s3api
import (
"encoding/xml"
"time"
)
// Status represents lifecycle configuration status
type ruleStatus string
// Supported status types
const (
Enabled ruleStatus = "Enabled"
Disabled ruleStatus = "Disabled"
)
// Lifecycle - Configuration for bucket lifecycle.
type Lifecycle struct {
XMLName xml.Name `xml:"LifecycleConfiguration"`
Rules []Rule `xml:"Rule"`
}
// Rule - a rule for lifecycle configuration.
type Rule struct {
XMLName xml.Name `xml:"Rule"`
ID string `xml:"ID,omitempty"`
Status ruleStatus `xml:"Status"`
Filter Filter `xml:"Filter,omitempty"`
Prefix Prefix `xml:"Prefix,omitempty"`
Expiration Expiration `xml:"Expiration,omitempty"`
Transition Transition `xml:"Transition,omitempty"`
}
// Filter - a filter for a lifecycle configuration Rule.
type Filter struct {
XMLName xml.Name `xml:"Filter"`
set bool
Prefix Prefix
And And
andSet bool
Tag Tag
tagSet bool
}
// Prefix holds the prefix xml tag in <Rule> and <Filter>
type Prefix struct {
string
set bool
}
// And - a tag to combine a prefix and multiple tags for lifecycle configuration rule.
type And struct {
XMLName xml.Name `xml:"And"`
Prefix Prefix `xml:"Prefix,omitempty"`
Tags []Tag `xml:"Tag,omitempty"`
}
// Expiration - expiration actions for a rule in lifecycle configuration.
type Expiration struct {
XMLName xml.Name `xml:"Expiration"`
Days int `xml:"Days,omitempty"`
Date time.Time `xml:"Date,omitempty"`
DeleteMarker ExpireDeleteMarker `xml:"ExpiredObjectDeleteMarker"`
set bool
}
// ExpireDeleteMarker represents value of ExpiredObjectDeleteMarker field in Expiration XML element.
type ExpireDeleteMarker struct {
val bool
set bool
}
// Transition - transition actions for a rule in lifecycle configuration.
type Transition struct {
XMLName xml.Name `xml:"Transition"`
Days int `xml:"Days,omitempty"`
Date time.Time `xml:"Date,omitempty"`
StorageClass string `xml:"StorageClass,omitempty"`
set bool
}
// TransitionDays is a type alias to unmarshal Days in Transition
type TransitionDays int

22
weed/s3api/s3api_server.go

@ -115,14 +115,30 @@ func (s3a *S3ApiServer) registerRouter(router *mux.Router) {
bucket.Methods("GET").HandlerFunc(track(s3a.iam.Auth(s3a.ListObjectsV2Handler, ACTION_LIST), "LIST")).Queries("list-type", "2") bucket.Methods("GET").HandlerFunc(track(s3a.iam.Auth(s3a.ListObjectsV2Handler, ACTION_LIST), "LIST")).Queries("list-type", "2")
// GetObject, but directory listing is not supported // GetObject, but directory listing is not supported
bucket.Methods("GET").Path("/{object:.+}").HandlerFunc(track(s3a.iam.Auth(s3a.GetObjectHandler, ACTION_READ), "GET")) bucket.Methods("GET").Path("/{object:.+}").HandlerFunc(track(s3a.iam.Auth(s3a.GetObjectHandler, ACTION_READ), "GET"))
// ListObjectsV1 (Legacy)
bucket.Methods("GET").HandlerFunc(track(s3a.iam.Auth(s3a.ListObjectsV1Handler, ACTION_LIST), "LIST"))
// PostPolicy // PostPolicy
bucket.Methods("POST").HeadersRegexp("Content-Type", "multipart/form-data*").HandlerFunc(track(s3a.iam.Auth(s3a.PostPolicyBucketHandler, ACTION_WRITE), "POST")) bucket.Methods("POST").HeadersRegexp("Content-Type", "multipart/form-data*").HandlerFunc(track(s3a.iam.Auth(s3a.PostPolicyBucketHandler, ACTION_WRITE), "POST"))
// DeleteMultipleObjects // DeleteMultipleObjects
bucket.Methods("POST").HandlerFunc(track(s3a.iam.Auth(s3a.DeleteMultipleObjectsHandler, ACTION_WRITE), "DELETE")).Queries("delete", "") bucket.Methods("POST").HandlerFunc(track(s3a.iam.Auth(s3a.DeleteMultipleObjectsHandler, ACTION_WRITE), "DELETE")).Queries("delete", "")
// GetBucketACL
bucket.Methods("GET").HandlerFunc(s3a.iam.Auth(s3a.GetBucketAclHandler, ACTION_READ)).Queries("acl", "")
// GetObjectACL
bucket.Methods("GET").Path("/{object:.+}").HandlerFunc(s3a.iam.Auth(s3a.GetObjectAclHandler, ACTION_READ)).Queries("acl", "")
// GetBucketLifecycleConfiguration
bucket.Methods("GET").HandlerFunc(s3a.iam.Auth(s3a.GetBucketLifecycleConfigurationHandler, ACTION_READ)).Queries("lifecycle", "")
// PutBucketLifecycleConfiguration
bucket.Methods("PUT").HandlerFunc(s3a.iam.Auth(s3a.PutBucketLifecycleConfigurationHandler, ACTION_WRITE)).Queries("lifecycle", "")
// DeleteBucketLifecycleConfiguration
bucket.Methods("DELETE").HandlerFunc(s3a.iam.Auth(s3a.DeleteBucketLifecycleHandler, ACTION_WRITE)).Queries("lifecycle", "")
// ListObjectsV1 (Legacy)
bucket.Methods("GET").HandlerFunc(track(s3a.iam.Auth(s3a.ListObjectsV1Handler, ACTION_LIST), "LIST"))
/* /*
// not implemented // not implemented
@ -132,8 +148,6 @@ func (s3a *S3ApiServer) registerRouter(router *mux.Router) {
bucket.Methods("GET").HandlerFunc(s3a.GetBucketPolicyHandler).Queries("policy", "") bucket.Methods("GET").HandlerFunc(s3a.GetBucketPolicyHandler).Queries("policy", "")
// GetObjectACL // GetObjectACL
bucket.Methods("GET").Path("/{object:.+}").HandlerFunc(s3a.GetObjectACLHandler).Queries("acl", "") bucket.Methods("GET").Path("/{object:.+}").HandlerFunc(s3a.GetObjectACLHandler).Queries("acl", "")
// GetBucketACL
bucket.Methods("GET").HandlerFunc(s3a.GetBucketACLHandler).Queries("acl", "")
// PutBucketPolicy // PutBucketPolicy
bucket.Methods("PUT").HandlerFunc(s3a.PutBucketPolicyHandler).Queries("policy", "") bucket.Methods("PUT").HandlerFunc(s3a.PutBucketPolicyHandler).Queries("policy", "")
// DeleteBucketPolicy // DeleteBucketPolicy

16
weed/s3api/s3api_xsd_generated.go

@ -8,12 +8,12 @@ import (
) )
type AccessControlList struct { type AccessControlList struct {
Grant []Grant `xml:"http://s3.amazonaws.com/doc/2006-03-01/ Grant,omitempty"`
Grant []Grant `xml:"Grant,omitempty"`
} }
type AccessControlPolicy struct { type AccessControlPolicy struct {
Owner CanonicalUser `xml:"http://s3.amazonaws.com/doc/2006-03-01/ Owner"`
AccessControlList AccessControlList `xml:"http://s3.amazonaws.com/doc/2006-03-01/ AccessControlList"`
Owner CanonicalUser `xml:"Owner"`
AccessControlList AccessControlList `xml:"AccessControlList"`
} }
type AmazonCustomerByEmail struct { type AmazonCustomerByEmail struct {
@ -467,11 +467,17 @@ func (t *GetObjectResult) UnmarshalXML(d *xml.Decoder, start xml.StartElement) e
} }
type Grant struct { type Grant struct {
Grantee Grantee `xml:"http://s3.amazonaws.com/doc/2006-03-01/ Grantee"`
Permission Permission `xml:"http://s3.amazonaws.com/doc/2006-03-01/ Permission"`
Grantee Grantee `xml:"Grantee"`
Permission Permission `xml:"Permission"`
} }
type Grantee struct { type Grantee struct {
XMLNS string `xml:"xmlns:xsi,attr"`
XMLXSI string `xml:"xsi:type,attr"`
Type string `xml:"Type"`
ID string `xml:"ID,omitempty"`
DisplayName string `xml:"DisplayName,omitempty"`
URI string `xml:"URI,omitempty"`
} }
type Group struct { type Group struct {

6
weed/s3api/s3err/s3api_errors.go

@ -51,6 +51,7 @@ const (
ErrBucketAlreadyExists ErrBucketAlreadyExists
ErrBucketAlreadyOwnedByYou ErrBucketAlreadyOwnedByYou
ErrNoSuchBucket ErrNoSuchBucket
ErrNoSuchLifecycleConfiguration
ErrNoSuchKey ErrNoSuchKey
ErrNoSuchUpload ErrNoSuchUpload
ErrInvalidBucketName ErrInvalidBucketName
@ -163,6 +164,11 @@ var errorCodeResponse = map[ErrorCode]APIError{
Description: "The specified bucket does not exist", Description: "The specified bucket does not exist",
HTTPStatusCode: http.StatusNotFound, HTTPStatusCode: http.StatusNotFound,
}, },
ErrNoSuchLifecycleConfiguration: {
Code: "NoSuchLifecycleConfiguration",
Description: "The lifecycle configuration does not exist",
HTTPStatusCode: http.StatusNotFound,
},
ErrNoSuchKey: { ErrNoSuchKey: {
Code: "NoSuchKey", Code: "NoSuchKey",
Description: "The specified key does not exist.", Description: "The specified key does not exist.",

19
weed/shell/command_fs_configure.go

@ -62,7 +62,7 @@ func (c *commandFsConfigure) Do(args []string, commandEnv *CommandEnv, writer io
return nil return nil
} }
fc, err := readFilerConf(commandEnv)
fc, err := filer.ReadFilerConf(commandEnv.option.FilerAddress, commandEnv.option.GrpcDialOption, commandEnv.MasterClient)
if err != nil { if err != nil {
return err return err
} }
@ -122,20 +122,3 @@ func (c *commandFsConfigure) Do(args []string, commandEnv *CommandEnv, writer io
return nil return nil
} }
func readFilerConf(commandEnv *CommandEnv) (*filer.FilerConf, error) {
var buf bytes.Buffer
if err := commandEnv.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
return filer.ReadEntry(commandEnv.MasterClient, client, filer.DirectoryEtcSeaweedFS, filer.FilerConfName, &buf)
}); err != nil && err != filer_pb.ErrNotFound {
return nil, fmt.Errorf("read %s/%s: %v", filer.DirectoryEtcSeaweedFS, filer.FilerConfName, err)
}
fc := filer.NewFilerConf()
if buf.Len() > 0 {
if err := fc.LoadFromBytes(buf.Bytes()); err != nil {
return nil, fmt.Errorf("parse %s/%s: %v", filer.DirectoryEtcSeaweedFS, filer.FilerConfName, err)
}
}
return fc, nil
}
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