80 lines
1.9 KiB
Go
80 lines
1.9 KiB
Go
package main
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import (
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"bytes"
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"context"
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"fmt"
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"io"
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"github.com/aws/aws-sdk-go-v2/aws"
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"github.com/aws/aws-sdk-go-v2/config"
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"github.com/aws/aws-sdk-go-v2/service/s3"
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"github.com/aws/aws-sdk-go-v2/service/s3/types"
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)
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var s3Client *s3.Client
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func initS3() error {
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cfg, err := config.LoadDefaultConfig(context.Background(), config.WithRegion("us-east-1"))
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if err != nil {
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return err
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}
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s3Client = s3.NewFromConfig(cfg)
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return nil
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}
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// s3Download fetches an object from S3.
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func s3Download(ctx context.Context, bucket, key string) ([]byte, error) {
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resp, err := s3Client.GetObject(ctx, &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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return nil, err
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}
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defer resp.Body.Close()
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return io.ReadAll(resp.Body)
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}
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// s3UploadBundle uploads a bundle JSON to S3.
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func s3UploadBundle(ctx context.Context, bucket, key string, data []byte) error {
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_, err := s3Client.PutObject(ctx, &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(data),
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ContentType: aws.String("application/json"),
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})
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return err
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}
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// s3DeletePrefix deletes all objects under a prefix in S3.
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func s3DeletePrefix(ctx context.Context, bucket, prefix string) error {
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paginator := s3.NewListObjectsV2Paginator(s3Client, &s3.ListObjectsV2Input{
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Bucket: aws.String(bucket),
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Prefix: aws.String(prefix),
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})
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for paginator.HasMorePages() {
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page, err := paginator.NextPage(ctx)
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if err != nil {
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return err
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}
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if len(page.Contents) == 0 {
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continue
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}
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var objects []types.ObjectIdentifier
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for _, obj := range page.Contents {
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objects = append(objects, types.ObjectIdentifier{Key: obj.Key})
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}
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_, err = s3Client.DeleteObjects(ctx, &s3.DeleteObjectsInput{
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Bucket: aws.String(bucket),
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Delete: &types.Delete{Objects: objects},
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})
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if err != nil {
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return fmt.Errorf("delete batch: %w", err)
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}
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}
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return nil
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}
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