146 lines
3.5 KiB
Go
146 lines
3.5 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information.
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package s3client
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import (
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"bytes"
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"fmt"
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"os"
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"os/exec"
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"strings"
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"github.com/zeebo/errs"
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"storj.io/common/fpath"
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)
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// UplinkError is class for minio errors
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var UplinkError = errs.Class("uplink error")
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// Uplink implements basic S3 Client with uplink
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type Uplink struct {
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conf Config
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}
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// NewUplink creates new Client
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func NewUplink(conf Config) (Client, error) {
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client := &Uplink{conf}
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if client.conf.ConfigDir != "" {
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fmt.Printf("Using existing uplink config at %s\n", client.conf.ConfigDir)
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return client, nil
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}
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client.conf.ConfigDir = fpath.ApplicationDir("storj", "s3-client", "uplink")
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// remove existing s3client uplink config so that
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// we can create a new one with up-to-date settings
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err := os.RemoveAll(client.conf.ConfigDir)
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if err != nil {
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return nil, UplinkError.Wrap(fullExitError(err))
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}
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cmd := client.cmd("--config-dir", client.conf.ConfigDir,
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"setup",
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"--non-interactive", "true",
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"--api-key", client.conf.APIKey,
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"--enc.encryption-key", client.conf.EncryptionKey,
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"--satellite-addr", client.conf.Satellite,
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)
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_, err = cmd.Output()
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if err != nil {
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return nil, UplinkError.Wrap(fullExitError(err))
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}
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return client, nil
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}
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func (client *Uplink) cmd(subargs ...string) *exec.Cmd {
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args := []string{}
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configArgs := []string{"--config-dir", client.conf.ConfigDir}
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args = append(args, configArgs...)
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args = append(args, subargs...)
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cmd := exec.Command("uplink", args...)
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return cmd
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}
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// MakeBucket makes a new bucket
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func (client *Uplink) MakeBucket(bucket, location string) error {
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cmd := client.cmd("mb", "s3://"+bucket)
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_, err := cmd.Output()
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if err != nil {
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return UplinkError.Wrap(fullExitError(err))
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}
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return nil
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}
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// RemoveBucket removes a bucket
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func (client *Uplink) RemoveBucket(bucket string) error {
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cmd := client.cmd("rb", "s3://"+bucket)
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_, err := cmd.Output()
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if err != nil {
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return UplinkError.Wrap(fullExitError(err))
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}
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return nil
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}
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// ListBuckets lists all buckets
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func (client *Uplink) ListBuckets() ([]string, error) {
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cmd := client.cmd("ls")
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data, err := cmd.Output()
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if err != nil {
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return nil, UplinkError.Wrap(fullExitError(err))
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}
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names := strings.Split(strings.TrimRight(string(data), "\n"), "\n")
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return names, nil
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}
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// Upload uploads object data to the specified path
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func (client *Uplink) Upload(bucket, objectName string, data []byte) error {
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// TODO: add upload threshold
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cmd := client.cmd("put", "s3://"+bucket+"/"+objectName)
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cmd.Stdin = bytes.NewReader(data)
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_, err := cmd.Output()
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if err != nil {
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return UplinkError.Wrap(fullExitError(err))
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}
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return nil
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}
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// Download downloads object data
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func (client *Uplink) Download(bucket, objectName string, buffer []byte) ([]byte, error) {
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cmd := client.cmd("cat", "s3://"+bucket+"/"+objectName)
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out, err := cmd.Output()
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if err != nil {
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return nil, UplinkError.Wrap(fullExitError(err))
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}
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return out, nil
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}
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// Delete deletes object
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func (client *Uplink) Delete(bucket, objectName string) error {
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cmd := client.cmd("rm", "s3://"+bucket+"/"+objectName)
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_, err := cmd.Output()
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if err != nil {
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return UplinkError.Wrap(fullExitError(err))
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}
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return nil
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}
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// ListObjects lists objects
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func (client *Uplink) ListObjects(bucket, prefix string) ([]string, error) {
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cmd := client.cmd("ls", "s3://"+bucket+"/"+prefix)
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data, err := cmd.Output()
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if err != nil {
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return nil, UplinkError.Wrap(fullExitError(err))
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}
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names := strings.Split(strings.TrimRight(string(data), "\n"), "\n")
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return names, nil
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}
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