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d2856bfeee
* Add (commented out) linters that we should introduce I went through the available linters and added (commented out) the ones I think we should work on in the near term. In other words, fix them, then uncomment them so they are enabled in CI. * linter: errchkjson * linter: ineffassign * linter: gosimple * linter: errname
99 lines
2.5 KiB
Go
99 lines
2.5 KiB
Go
package internal
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import (
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"bytes"
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"net/url"
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"os"
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"strings"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/aws/awserr"
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"github.com/aws/aws-sdk-go/service/s3"
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"github.com/aws/aws-sdk-go/service/s3/s3iface"
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"github.com/pkg/errors"
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)
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var ErrFileOrURLNotFound = errors.New("file or url does not exist")
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// ReadFileOrURL reads a path from the filesystem or an s3 URL.
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// The s3client parameter is required if reading an s3 URL.
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// ReadFileOrURL returns FileOrURLNotFound when the local filesystem
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// path or remote s3 location is not found.
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func ReadFileOrURL(name string, s3client s3iface.S3API) ([]byte, error) {
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var content []byte
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var err error
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if strings.HasPrefix(name, "s3://") {
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if s3client == nil {
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return nil, errors.New("missing s3 client")
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}
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u, err := url.Parse(name)
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if err != nil {
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return nil, errors.Wrapf(err, "parsing S3 URL %v", name)
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}
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bucket := u.Host
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key := u.Path[1:] // strip leading slash
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result, err := s3client.GetObject(&s3.GetObjectInput{
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Bucket: aws.String(bucket),
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Key: aws.String(key),
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})
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if err != nil {
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if aerr, ok := err.(awserr.Error); ok {
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switch aerr.Code() {
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case s3.ErrCodeNoSuchBucket:
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return nil, ErrFileOrURLNotFound
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case s3.ErrCodeNoSuchKey:
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return nil, ErrFileOrURLNotFound
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}
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}
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return nil, errors.Wrapf(err, "fetching S3 object %v", name)
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}
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buf := new(bytes.Buffer)
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_, err = buf.ReadFrom(result.Body)
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if err != nil {
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return nil, err
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}
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content = buf.Bytes()
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} else {
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content, err = os.ReadFile(name)
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if err != nil {
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if os.IsNotExist(err) {
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return nil, ErrFileOrURLNotFound
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}
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return nil, errors.Wrapf(err, "reading file %v", name)
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}
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}
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return content, nil
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}
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func WriteFileOrURL(name string, contents []byte, s3client s3iface.S3API) error {
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var err error
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if strings.HasPrefix(name, "s3://") {
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if s3client == nil {
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return errors.New("missing s3 client")
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}
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u, err := url.Parse(name)
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if err != nil {
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return errors.Wrapf(err, "parsing S3 URL %v", name)
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}
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bucket := u.Host
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key := u.Path[1:] // strip leading slash
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_, err = s3client.PutObject(&s3.PutObjectInput{
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Bucket: aws.String(bucket),
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Key: aws.String(key),
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Body: bytes.NewReader(contents),
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ContentLength: aws.Int64(int64(len(contents))),
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})
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if err != nil {
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return errors.Wrapf(err, "putting S3 object %v", name)
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}
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} else {
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err = os.WriteFile(name, contents, 0644)
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if err != nil {
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return errors.Wrapf(err, "reading file %v", name)
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}
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}
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return nil
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}
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