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object.go
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object.go
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// TODO: the s2 library checks the type of the error to decide how to handle it,
// which doesn't work properly with wrapped errors
package s3
import (
"fmt"
"io"
"net/http"
"strings"
"github.com/pachyderm/pachyderm/v2/src/internal/errutil"
"github.com/pachyderm/pachyderm/v2/src/internal/log"
"github.com/pachyderm/pachyderm/v2/src/pfs"
pfsServer "github.com/pachyderm/pachyderm/v2/src/server/pfs"
"github.com/pachyderm/s2"
"go.uber.org/zap"
)
func (c *controller) GetObject(r *http.Request, bucketName, file, version string) (*s2.GetObjectResult, error) {
defer log.Span(r.Context(), "GetObject", zap.String("bucketName", bucketName), zap.String("file", file), zap.String("version", version))()
pc := c.requestClient(r)
file = strings.TrimSuffix(file, "/")
bucket, err := c.driver.bucket(pc, r, bucketName)
if err != nil {
return nil, err
}
bucketCaps, err := c.driver.bucketCapabilities(pc, r, bucket)
if err != nil {
return nil, err
}
if !bucketCaps.readable {
return nil, s2.NoSuchKeyError(r)
}
commitID := bucket.Commit.Id
if version != "" {
if !bucketCaps.historicVersions {
return nil, s2.NotImplementedError(r)
}
commitID = version
}
// We use listFileResult[0] rather than InspectFile result since InspectFile
// on a path that has both a file and a directory in it returns the
// directory. However, ListFile will show it as a file, if it exists.
var firstFile *pfs.FileInfo
err = pc.ListFile(bucket.Commit, file, func(fi *pfs.FileInfo) (retErr error) {
if firstFile == nil {
firstFile = fi
}
return errutil.ErrBreak
})
if err != nil {
return nil, maybeNotFoundError(r, err)
}
if firstFile == nil {
// we never set it, probably zero results
return nil, s2.NoSuchKeyError(r)
}
fileInfo := firstFile
// the exact object named does not exist, but perhaps is a "directory".
// "directories" do not actually exist, and certainly cannot be read.
// ("seeker can't seek")
if fileInfo.File.Path[1:] != file {
return nil, s2.NoSuchKeyError(r)
}
modTime := fileInfo.Committed.AsTime()
content, err := pc.GetFileReadSeeker(bucket.Commit, file)
if err != nil {
return nil, err
}
result := s2.GetObjectResult{
ModTime: modTime,
Content: content,
ETag: fmt.Sprintf("%x", fileInfo.Hash),
Version: commitID,
DeleteMarker: false,
}
return &result, nil
}
func (c *controller) CopyObject(r *http.Request, srcBucketName, srcFile string, srcObj *s2.GetObjectResult, destBucketName, destFile string) (string, error) {
defer log.Span(r.Context(), "CopyObject", zap.String("srcBucketName", srcBucketName), zap.String("srcFile", srcFile), zap.Any("srcObj", srcObj), zap.String("destBucketName", destBucketName), zap.String("destFile", destFile))()
pc := c.requestClient(r)
destFile = strings.TrimSuffix(destFile, "/")
srcBucket, err := c.driver.bucket(pc, r, srcBucketName)
if err != nil {
return "", err
}
// srcBucket capabilities were already verified, since s2 will call
// `GetObject` under the hood before calling `CopyObject`
destBucket, err := c.driver.bucket(pc, r, destBucketName)
if err != nil {
return "", err
}
destBucketCaps, err := c.driver.bucketCapabilities(pc, r, destBucket)
if err != nil {
return "", err
}
if !destBucketCaps.writable {
return "", s2.NotImplementedError(r)
}
if err = pc.CopyFile(destBucket.Commit, destFile, srcBucket.Commit, srcFile); err != nil {
if errutil.IsWriteToOutputBranchError(err) {
return "", writeToOutputBranchError(r)
} else if errutil.IsNotADirectoryError(err) {
return "", invalidFileParentError(r)
} else if errutil.IsInvalidPathError(err) {
return "", invalidFilePathError(r)
}
return "", err
}
fileInfo, err := pc.InspectFile(destBucket.Commit, destFile)
if err != nil && !pfsServer.IsOutputCommitNotFinishedErr(err) {
return "", err
}
var version string
if fileInfo != nil {
version = fileInfo.File.Commit.Id
}
return version, nil
}
func (c *controller) PutObject(r *http.Request, bucketName, file string, reader io.Reader) (*s2.PutObjectResult, error) {
defer log.Span(r.Context(), "PutObject", zap.String("bucketName", bucketName), zap.String("file", file))()
pc := c.requestClient(r)
file = strings.TrimSuffix(file, "/")
bucket, err := c.driver.bucket(pc, r, bucketName)
if err != nil {
return nil, err
}
bucketCaps, err := c.driver.bucketCapabilities(pc, r, bucket)
if err != nil {
return nil, err
}
if !bucketCaps.writable {
return nil, s2.NotImplementedError(r)
}
bucketCommit := bucket.Commit
if err := pc.PutFile(bucketCommit, file, reader); err != nil {
if errutil.IsWriteToOutputBranchError(err) {
return nil, writeToOutputBranchError(r)
} else if errutil.IsNotADirectoryError(err) {
return nil, invalidFileParentError(r)
} else if errutil.IsInvalidPathError(err) {
return nil, invalidFilePathError(r)
}
return nil, err
}
fileInfo, err := pc.InspectFile(bucketCommit, file)
if err != nil && !pfsServer.IsOutputCommitNotFinishedErr(err) {
return nil, err
}
result := s2.PutObjectResult{}
if fileInfo != nil {
result.ETag = fmt.Sprintf("%x", fileInfo.Hash)
result.Version = fileInfo.File.Commit.Id
}
return &result, nil
}
func (c *controller) DeleteObject(r *http.Request, bucketName, file, version string) (*s2.DeleteObjectResult, error) {
defer log.Span(r.Context(), "DeleteObject", zap.String("bucketName", bucketName), zap.String("file", file), zap.String("version", version))()
pc := c.requestClient(r)
file = strings.TrimSuffix(file, "/")
if version != "" {
return nil, s2.NotImplementedError(r)
}
bucket, err := c.driver.bucket(pc, r, bucketName)
if err != nil {
return nil, err
}
bucketCaps, err := c.driver.bucketCapabilities(pc, r, bucket)
if err != nil {
return nil, err
}
if !bucketCaps.writable {
return nil, s2.NotImplementedError(r)
}
if err = pc.DeleteFile(bucket.Commit, file); err != nil {
if errutil.IsWriteToOutputBranchError(err) {
return nil, writeToOutputBranchError(r)
}
return nil, maybeNotFoundError(r, err)
}
result := s2.DeleteObjectResult{
Version: "",
DeleteMarker: false,
}
return &result, nil
}