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kubetest2-kops: automatically create buckets
When working with boskos, this means we don't need to have a shared bucket with dynamic permissions.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,123 @@ | ||
| /* | ||
| Copyright 2023 The Kubernetes Authors. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| package aws | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
|
|
||
| "github.com/aws/aws-sdk-go/aws" | ||
| "github.com/aws/aws-sdk-go/aws/credentials" | ||
| "github.com/aws/aws-sdk-go/aws/session" | ||
| "github.com/aws/aws-sdk-go/service/s3" | ||
| "github.com/aws/aws-sdk-go/service/sts" | ||
| ) | ||
|
|
||
| // We need to pick some region to query the AWS APIs through, even if we are not running on AWS. | ||
| const defaultRegion = "us-east-2" | ||
|
|
||
| type awsClient struct { | ||
| sts *sts.STS | ||
| s3 *s3.S3 | ||
| } | ||
|
|
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| func newAWSClient(ctx context.Context, creds *credentials.Credentials) (*awsClient, error) { | ||
| awsConfig := aws.NewConfig().WithRegion(defaultRegion).WithUseDualStack(true) | ||
| awsConfig = awsConfig.WithCredentialsChainVerboseErrors(true) | ||
| if creds != nil { | ||
| awsConfig = awsConfig.WithCredentials(creds) | ||
| } | ||
|
|
||
| awsSession, err := session.NewSessionWithOptions(session.Options{ | ||
| Config: *awsConfig, | ||
| SharedConfigState: session.SharedConfigEnable, | ||
| }) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("error starting new AWS session: %v", err) | ||
| } | ||
|
|
||
| return &awsClient{ | ||
| sts: sts.New(awsSession, awsConfig), | ||
| s3: s3.New(awsSession, awsConfig), | ||
| }, nil | ||
| } | ||
|
|
||
| // AWSBucketName constructs a bucket name that is unique to the AWS account. | ||
| func AWSBucketName(ctx context.Context, creds *credentials.Credentials) (string, error) { | ||
| client, err := newAWSClient(ctx, creds) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
|
|
||
| callerIdentity, err := client.sts.GetCallerIdentity(&sts.GetCallerIdentityInput{}) | ||
| if err != nil { | ||
| return "", fmt.Errorf("error getting AWS caller identity from STS: %w", err) | ||
| } | ||
| bucket := "kops-test-" + aws.StringValue(callerIdentity.Account) | ||
| return bucket, nil | ||
| } | ||
|
|
||
| // EnsureAWSBucket creates a bucket if it does not exist in the account. | ||
| // If a different account has already created the bucket, that is treated as an error to prevent "preimage" attacks. | ||
| func EnsureAWSBucket(ctx context.Context, creds *credentials.Credentials, bucketName string) error { | ||
| // These don't need to be in the same region, so we pick a region arbitrarily | ||
| location := "us-east-2" | ||
|
|
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| client, err := newAWSClient(ctx, creds) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
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| // Note that this lists only our buckets, so we know that someone else hasn't created the bucket | ||
| buckets, err := client.s3.ListBucketsWithContext(ctx, &s3.ListBucketsInput{}) | ||
| if err != nil { | ||
| return fmt.Errorf("error listing buckets: %w", err) | ||
| } | ||
|
|
||
| var existingBucket *s3.Bucket | ||
| for _, bucket := range buckets.Buckets { | ||
| if aws.StringValue(bucket.Name) == bucketName { | ||
| existingBucket = bucket | ||
| } | ||
| } | ||
|
|
||
| if existingBucket == nil { | ||
| if _, err := client.s3.CreateBucketWithContext(ctx, &s3.CreateBucketInput{ | ||
| Bucket: &bucketName, | ||
| CreateBucketConfiguration: &s3.CreateBucketConfiguration{ | ||
| LocationConstraint: &location, | ||
| }, | ||
| }); err != nil { | ||
| return fmt.Errorf("error creating bucket %q: %w", bucketName, err) | ||
| } | ||
| } | ||
|
|
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| return nil | ||
| } | ||
|
|
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| // DeleteAWSBucket deletes an AWS bucket. | ||
| func DeleteAWSBucket(ctx context.Context, creds *credentials.Credentials, bucketName string) error { | ||
| client, err := newAWSClient(ctx, creds) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| if _, err := client.s3.DeleteBucketWithContext(ctx, &s3.DeleteBucketInput{Bucket: &bucketName}); err != nil { | ||
| return fmt.Errorf("error deleting bucket: %w", err) | ||
| } | ||
| return nil | ||
| } |
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