2022-12-29 11:24:55 -05:00
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/*
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Copyright (c) Edgeless Systems GmbH
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SPDX-License-Identifier: AGPL-3.0-only
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*/
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2023-01-19 09:57:50 -05:00
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/*
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Package client provides a client for the versions API.
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The client needs to be authenticated with AWS. It should be used in internal
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development and CI tools for administrative tasks. For just fetching information
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from the API, use the fetcher package instead.
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Needed IAM permissions for read mode:
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- "s3:GetObject"
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- "s3:ListBucket"
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Additional needed IAM permissions for write mode:
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- "s3:PutObject"
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- "s3:DeleteObject"
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- "cloudfront:CreateInvalidation"
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Thread-safety of the bucket is not guaranteed. The client is not thread-safe.
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*/
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2022-12-29 11:24:55 -05:00
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package client
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import (
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"bytes"
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"path"
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"time"
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"github.com/aws/aws-sdk-go-v2/aws"
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awsconfig "github.com/aws/aws-sdk-go-v2/config"
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s3manager "github.com/aws/aws-sdk-go-v2/feature/s3/manager"
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"github.com/aws/aws-sdk-go-v2/service/cloudfront"
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cftypes "github.com/aws/aws-sdk-go-v2/service/cloudfront/types"
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"github.com/aws/aws-sdk-go-v2/service/s3"
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s3types "github.com/aws/aws-sdk-go-v2/service/s3/types"
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2023-04-27 11:41:53 -04:00
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"golang.org/x/mod/semver"
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2022-12-29 11:24:55 -05:00
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"github.com/edgelesssys/constellation/v2/internal/constants"
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"github.com/edgelesssys/constellation/v2/internal/logger"
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"github.com/edgelesssys/constellation/v2/internal/versionsapi"
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)
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// Client is the client for the versions API.
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type Client struct {
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config aws.Config
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cloudfrontClient *cloudfront.Client
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s3Client *s3.Client
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uploadClient *s3manager.Uploader
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bucket string
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distributionID string
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cacheInvalidationWaitTimeout time.Duration
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dirtyPaths []string // written paths to be invalidated
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dryRun bool // no write operations are performed
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log *logger.Logger
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}
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2022-12-29 02:32:18 -05:00
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// NewReadOnlyClient creates a new read-only client.
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// This client can be used to fetch objects but cannot write updates.
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func NewReadOnlyClient(ctx context.Context, region, bucket, distributionID string,
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log *logger.Logger,
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) (*Client, error) {
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cfg, err := awsconfig.LoadDefaultConfig(ctx, awsconfig.WithRegion(region))
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if err != nil {
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return nil, err
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}
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s3c := s3.NewFromConfig(cfg)
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return &Client{
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config: cfg,
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s3Client: s3c,
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bucket: bucket,
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distributionID: distributionID,
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dryRun: true,
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log: log,
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}, nil
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}
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2022-12-29 11:24:55 -05:00
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// NewClient creates a new client for the versions API.
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func NewClient(ctx context.Context, region, bucket, distributionID string, dryRun bool,
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log *logger.Logger,
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) (*Client, error) {
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cfg, err := awsconfig.LoadDefaultConfig(ctx, awsconfig.WithRegion(region))
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if err != nil {
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return nil, err
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}
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cloudfrontC := cloudfront.NewFromConfig(cfg)
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s3C := s3.NewFromConfig(cfg)
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uploadC := s3manager.NewUploader(s3C)
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return &Client{
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config: cfg,
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cloudfrontClient: cloudfrontC,
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s3Client: s3C,
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uploadClient: uploadC,
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bucket: bucket,
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distributionID: distributionID,
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dryRun: dryRun,
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log: log,
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2023-04-27 11:41:53 -04:00
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cacheInvalidationWaitTimeout: 10 * time.Minute,
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2022-12-29 11:24:55 -05:00
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}, nil
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}
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// FetchVersionList fetches the given version list from the versions API.
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func (c *Client) FetchVersionList(ctx context.Context, list versionsapi.List) (versionsapi.List, error) {
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return fetch(ctx, c, list)
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}
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// UpdateVersionList updates the given version list in the versions API.
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func (c *Client) UpdateVersionList(ctx context.Context, list versionsapi.List) error {
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semver.Sort(list.Versions)
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return update(ctx, c, list)
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}
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// FetchVersionLatest fetches the latest version from the versions API.
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func (c *Client) FetchVersionLatest(ctx context.Context, latest versionsapi.Latest) (versionsapi.Latest, error) {
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return fetch(ctx, c, latest)
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}
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// UpdateVersionLatest updates the latest version in the versions API.
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func (c *Client) UpdateVersionLatest(ctx context.Context, latest versionsapi.Latest) error {
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return update(ctx, c, latest)
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}
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// FetchImageInfo fetches the given image info from the versions API.
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func (c *Client) FetchImageInfo(ctx context.Context, imageInfo versionsapi.ImageInfo) (versionsapi.ImageInfo, error) {
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return fetch(ctx, c, imageInfo)
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}
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// UpdateImageInfo updates the given image info in the versions API.
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func (c *Client) UpdateImageInfo(ctx context.Context, imageInfo versionsapi.ImageInfo) error {
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return update(ctx, c, imageInfo)
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}
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2023-02-24 06:00:04 -05:00
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// FetchCLIInfo fetches the given CLI info from the versions API.
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func (c *Client) FetchCLIInfo(ctx context.Context, cliInfo versionsapi.CLIInfo) (versionsapi.CLIInfo, error) {
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return fetch(ctx, c, cliInfo)
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}
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// UpdateCLIInfo updates the given CLI info in the versions API.
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func (c *Client) UpdateCLIInfo(ctx context.Context, cliInfo versionsapi.CLIInfo) error {
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return update(ctx, c, cliInfo)
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}
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2022-12-29 11:24:55 -05:00
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// DeleteRef deletes the given ref from the versions API.
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func (c *Client) DeleteRef(ctx context.Context, ref string) error {
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if err := versionsapi.ValidateRef(ref); err != nil {
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return fmt.Errorf("validating ref: %w", err)
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}
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refPath := path.Join(constants.CDNAPIPrefix, "ref", ref)
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if err := c.deletePath(ctx, refPath); err != nil {
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return fmt.Errorf("deleting ref path: %w", err)
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}
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return nil
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}
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// DeleteVersion deletes the given version from the versions API.
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// The version will be removed from version lists and latest versions, and the versioned
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// objects are deleted.
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// Notice that the versions API can get into an inconsistent state if the version is the latest
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// version but there is no older version of the same minor version available.
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// Manual update of latest versions is required in this case.
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func (c *Client) DeleteVersion(ctx context.Context, ver versionsapi.Version) error {
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var retErr error
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c.log.Debugf("Deleting version %s from minor version list", ver.Version)
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possibleNewLatest, err := c.deleteVersionFromMinorVersionList(ctx, ver)
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if err != nil {
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2023-02-07 06:56:25 -05:00
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retErr = errors.Join(retErr, fmt.Errorf("removing from minor version list: %w", err))
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2022-12-29 11:24:55 -05:00
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}
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c.log.Debugf("Checking latest version for %s", ver.Version)
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if err := c.deleteVersionFromLatest(ctx, ver, possibleNewLatest); err != nil {
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2023-02-07 06:56:25 -05:00
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retErr = errors.Join(retErr, fmt.Errorf("updating latest version: %w", err))
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2022-12-29 11:24:55 -05:00
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}
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2023-05-22 08:59:28 -04:00
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c.log.Debugf("Deleting artifact path %s for %s", ver.ArtifactPath("v1"), ver.Version)
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if err := c.deletePath(ctx, ver.ArtifactPath("v1")); err != nil {
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2023-02-07 06:56:25 -05:00
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retErr = errors.Join(retErr, fmt.Errorf("deleting artifact path: %w", err))
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2023-01-04 11:07:16 -05:00
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}
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2022-12-29 11:24:55 -05:00
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return retErr
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}
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// InvalidateCache invalidates the CDN cache for the paths that have been written.
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// The function should be deferred after the client has been created.
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func (c *Client) InvalidateCache(ctx context.Context) error {
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if len(c.dirtyPaths) == 0 {
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2023-01-31 06:12:19 -05:00
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c.log.Debugf("No dirty paths, skipping cache invalidation")
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2022-12-29 11:24:55 -05:00
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return nil
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}
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if c.dryRun {
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c.log.Debugf("DryRun: cloudfront create invalidation {DistributionID: %v, Paths: %v}", c.distributionID, c.dirtyPaths)
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return nil
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}
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c.log.Debugf("Paths to invalidate: %v", c.dirtyPaths)
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in := &cloudfront.CreateInvalidationInput{
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DistributionId: &c.distributionID,
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InvalidationBatch: &cftypes.InvalidationBatch{
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CallerReference: ptr(fmt.Sprintf("%d", time.Now().Unix())),
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Paths: &cftypes.Paths{
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Items: c.dirtyPaths,
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Quantity: ptr(int32(len(c.dirtyPaths))),
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},
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},
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}
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invalidation, err := c.cloudfrontClient.CreateInvalidation(ctx, in)
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if err != nil {
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return fmt.Errorf("creating invalidation: %w", err)
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}
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2023-01-31 06:12:19 -05:00
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c.log.Debugf("Waiting for invalidation %s to complete", *invalidation.Invalidation.Id)
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2022-12-29 11:24:55 -05:00
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waiter := cloudfront.NewInvalidationCompletedWaiter(c.cloudfrontClient)
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waitIn := &cloudfront.GetInvalidationInput{
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DistributionId: &c.distributionID,
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Id: invalidation.Invalidation.Id,
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}
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if err := waiter.Wait(ctx, waitIn, c.cacheInvalidationWaitTimeout); err != nil {
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return fmt.Errorf("waiting for invalidation to complete: %w", err)
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}
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return nil
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}
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type apiObject interface {
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ValidateRequest() error
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Validate() error
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JSONPath() string
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}
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func fetch[T apiObject](ctx context.Context, c *Client, obj T) (T, error) {
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if err := obj.ValidateRequest(); err != nil {
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return *new(T), fmt.Errorf("validating request for %T: %w", obj, err)
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}
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in := &s3.GetObjectInput{
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Bucket: &c.bucket,
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Key: ptr(obj.JSONPath()),
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}
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c.log.Debugf("Fetching %T from s3: %s", obj, obj.JSONPath())
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out, err := c.s3Client.GetObject(ctx, in)
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var noSuchkey *s3types.NoSuchKey
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if errors.As(err, &noSuchkey) {
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return *new(T), &NotFoundError{err: err}
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} else if err != nil {
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return *new(T), fmt.Errorf("getting s3 object at %s: %w", obj.JSONPath(), err)
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}
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defer out.Body.Close()
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var newObj T
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if err := json.NewDecoder(out.Body).Decode(&newObj); err != nil {
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return *new(T), fmt.Errorf("decoding %T: %w", obj, err)
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}
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if newObj.Validate() != nil {
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return *new(T), fmt.Errorf("received invalid %T: %w", newObj, newObj.Validate())
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}
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return newObj, nil
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}
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func update[T apiObject](ctx context.Context, c *Client, obj T) error {
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if err := obj.Validate(); err != nil {
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return fmt.Errorf("validating %T struct: %w", obj, err)
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}
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rawJSON, err := json.Marshal(obj)
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if err != nil {
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return fmt.Errorf("marshaling %T struct: %w", obj, err)
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}
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if c.dryRun {
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c.log.Debugf("DryRun: s3 put object {Bucket: %v, Key: %v, Body: %v", c.bucket, obj.JSONPath(), string(rawJSON))
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return nil
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}
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in := &s3.PutObjectInput{
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Bucket: &c.bucket,
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Key: ptr(obj.JSONPath()),
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Body: bytes.NewBuffer(rawJSON),
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}
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c.dirtyPaths = append(c.dirtyPaths, "/"+obj.JSONPath())
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c.log.Debugf("Uploading %T to s3: %v", obj, obj.JSONPath())
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if _, err := c.uploadClient.Upload(ctx, in); err != nil {
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return fmt.Errorf("uploading %T: %w", obj, err)
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}
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return nil
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}
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func (c *Client) deleteVersionFromMinorVersionList(ctx context.Context, ver versionsapi.Version,
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) (*versionsapi.Latest, error) {
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minorList := versionsapi.List{
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Ref: ver.Ref,
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Stream: ver.Stream,
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Granularity: versionsapi.GranularityMinor,
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Base: ver.WithGranularity(versionsapi.GranularityMinor),
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Kind: versionsapi.VersionKindImage,
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}
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c.log.Debugf("Fetching minor version list for version %s", ver.Version)
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minorList, err := c.FetchVersionList(ctx, minorList)
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var notFoundErr *NotFoundError
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if errors.As(err, ¬FoundErr) {
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c.log.Warnf("Minor version list for version %s not found", ver.Version)
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c.log.Warnf("Skipping update of minor version list")
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return nil, nil
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} else if err != nil {
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return nil, fmt.Errorf("fetching minor version list for version %s: %w", ver.Version, err)
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}
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if !minorList.Contains(ver.Version) {
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c.log.Warnf("Version %s is not in minor version list %s", ver.Version, minorList.JSONPath())
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c.log.Warnf("Skipping update of minor version list")
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return nil, nil
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}
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semver.Sort(minorList.Versions)
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for i, v := range minorList.Versions {
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if v == ver.Version {
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minorList.Versions = append(minorList.Versions[:i], minorList.Versions[i+1:]...)
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break
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}
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}
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var latest *versionsapi.Latest
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if len(minorList.Versions) != 0 {
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latest = &versionsapi.Latest{
|
|
|
|
Ref: ver.Ref,
|
|
|
|
Stream: ver.Stream,
|
|
|
|
Kind: versionsapi.VersionKindImage,
|
|
|
|
Version: minorList.Versions[len(minorList.Versions)-1],
|
|
|
|
}
|
|
|
|
c.log.Debugf("Possible latest version replacement %q", latest.Version)
|
|
|
|
}
|
|
|
|
|
|
|
|
if c.dryRun {
|
|
|
|
c.log.Debugf("DryRun: Updating minor version list %s to %v", minorList.JSONPath(), minorList)
|
|
|
|
return latest, nil
|
|
|
|
}
|
|
|
|
|
|
|
|
c.log.Debugf("Updating minor version list %s", minorList.JSONPath())
|
|
|
|
if err := c.UpdateVersionList(ctx, minorList); err != nil {
|
|
|
|
return latest, fmt.Errorf("updating minor version list %s: %w", minorList.JSONPath(), err)
|
|
|
|
}
|
|
|
|
|
|
|
|
c.log.Debugf("Removed version %s from minor version list %s", ver.Version, minorList.JSONPath())
|
|
|
|
return latest, nil
|
|
|
|
}
|
|
|
|
|
|
|
|
func (c *Client) deleteVersionFromLatest(ctx context.Context, ver versionsapi.Version, possibleNewLatest *versionsapi.Latest,
|
|
|
|
) error {
|
|
|
|
latest := versionsapi.Latest{
|
|
|
|
Ref: ver.Ref,
|
|
|
|
Stream: ver.Stream,
|
|
|
|
Kind: versionsapi.VersionKindImage,
|
|
|
|
}
|
2023-01-31 06:12:19 -05:00
|
|
|
c.log.Debugf("Fetching latest version from %s", latest.JSONPath())
|
2022-12-29 11:24:55 -05:00
|
|
|
latest, err := c.FetchVersionLatest(ctx, latest)
|
|
|
|
var notFoundErr *NotFoundError
|
|
|
|
if errors.As(err, ¬FoundErr) {
|
2023-01-31 06:12:19 -05:00
|
|
|
c.log.Warnf("Latest version for %s not found", latest.JSONPath())
|
2022-12-29 11:24:55 -05:00
|
|
|
return nil
|
|
|
|
} else if err != nil {
|
|
|
|
return fmt.Errorf("fetching latest version: %w", err)
|
|
|
|
}
|
|
|
|
|
|
|
|
if latest.Version != ver.Version {
|
2023-01-31 06:12:19 -05:00
|
|
|
c.log.Debugf("Latest version is %s, not the deleted version %s", latest.Version, ver.Version)
|
2022-12-29 11:24:55 -05:00
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
|
|
|
if possibleNewLatest == nil {
|
2023-01-31 06:12:19 -05:00
|
|
|
c.log.Errorf("Latest version is %s, but no new latest version was found", latest.Version)
|
2022-12-29 11:24:55 -05:00
|
|
|
c.log.Errorf("A manual update of latest at %s might be needed", latest.JSONPath())
|
|
|
|
return fmt.Errorf("latest version is %s, but no new latest version was found", latest.Version)
|
|
|
|
}
|
|
|
|
|
|
|
|
if c.dryRun {
|
|
|
|
c.log.Debugf("Would update latest version from %s to %s", latest.Version, possibleNewLatest.Version)
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
|
|
|
c.log.Infof("Updating latest version from %s to %s", latest.Version, possibleNewLatest.Version)
|
|
|
|
if err := c.UpdateVersionLatest(ctx, *possibleNewLatest); err != nil {
|
|
|
|
return fmt.Errorf("updating latest version: %w", err)
|
|
|
|
}
|
|
|
|
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
|
|
|
func (c *Client) deletePath(ctx context.Context, path string) error {
|
|
|
|
listIn := &s3.ListObjectsV2Input{
|
|
|
|
Bucket: &c.bucket,
|
|
|
|
Prefix: &path,
|
|
|
|
}
|
|
|
|
c.log.Debugf("Listing objects in %s", path)
|
|
|
|
objs := []s3types.Object{}
|
|
|
|
out := &s3.ListObjectsV2Output{IsTruncated: true}
|
|
|
|
for out.IsTruncated {
|
|
|
|
var err error
|
|
|
|
out, err = c.s3Client.ListObjectsV2(ctx, listIn)
|
|
|
|
if err != nil {
|
|
|
|
return fmt.Errorf("listing objects in %s: %w", path, err)
|
|
|
|
}
|
|
|
|
objs = append(objs, out.Contents...)
|
|
|
|
}
|
|
|
|
c.log.Debugf("Found %d objects in %s", len(objs), path)
|
|
|
|
|
|
|
|
if len(objs) == 0 {
|
|
|
|
c.log.Warnf("Path %s is already empty", path)
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
|
|
|
objIDs := make([]s3types.ObjectIdentifier, len(objs))
|
|
|
|
for i, obj := range objs {
|
|
|
|
objIDs[i] = s3types.ObjectIdentifier{Key: obj.Key}
|
|
|
|
}
|
|
|
|
|
|
|
|
if c.dryRun {
|
|
|
|
c.log.Debugf("DryRun: Deleting %d objects with IDs %v", len(objs), objIDs)
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
|
|
|
c.dirtyPaths = append(c.dirtyPaths, "/"+path)
|
|
|
|
|
|
|
|
deleteIn := &s3.DeleteObjectsInput{
|
|
|
|
Bucket: &c.bucket,
|
|
|
|
Delete: &s3types.Delete{
|
|
|
|
Objects: objIDs,
|
|
|
|
},
|
|
|
|
}
|
|
|
|
c.log.Debugf("Deleting %d objects in %s", len(objs), path)
|
|
|
|
if _, err := c.s3Client.DeleteObjects(ctx, deleteIn); err != nil {
|
|
|
|
return fmt.Errorf("deleting objects in %s: %w", path, err)
|
|
|
|
}
|
|
|
|
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
|
|
|
// NotFoundError is an error that is returned when a resource is not found.
|
|
|
|
type NotFoundError struct {
|
|
|
|
err error
|
|
|
|
}
|
|
|
|
|
|
|
|
func (e *NotFoundError) Error() string {
|
|
|
|
return fmt.Sprintf("the requested resource was not found: %s", e.err.Error())
|
|
|
|
}
|
|
|
|
|
|
|
|
func (e *NotFoundError) Unwrap() error {
|
|
|
|
return e.err
|
|
|
|
}
|
|
|
|
|
|
|
|
func ptr[T any](t T) *T {
|
|
|
|
return &t
|
|
|
|
}
|