storage: Swift backend using thanos.io/objstore #11672
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| package openstack | ||
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| import ( | ||
| "context" | ||
| "io" | ||
| "strings" | ||
|
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| "github.com/go-kit/log" | ||
| "github.com/pkg/errors" | ||
| "github.com/prometheus/client_golang/prometheus" | ||
| "github.com/thanos-io/objstore" | ||
|
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| "github.com/grafana/loki/pkg/storage/bucket" | ||
| "github.com/grafana/loki/pkg/storage/chunk/client" | ||
| "github.com/grafana/loki/pkg/storage/chunk/client/hedging" | ||
| ) | ||
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| type SwiftThanosObjectClient struct { | ||
| client objstore.Bucket | ||
| } | ||
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| func NewSwiftThanosObjectClient(ctx context.Context, cfg bucket.Config, component string, logger log.Logger, hedgingCfg hedging.Config, reg prometheus.Registerer) (*SwiftThanosObjectClient, error) { | ||
| // TODO Add Hedging client once we are able to configure HTTP on Swift provider | ||
| return newSwiftThanosObjectClient(ctx, cfg, component, logger, reg) | ||
| } | ||
|
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| func newSwiftThanosObjectClient(ctx context.Context, cfg bucket.Config, component string, logger log.Logger, reg prometheus.Registerer) (*SwiftThanosObjectClient, error) { | ||
| bucket, err := bucket.NewClient(ctx, cfg, component, logger, reg) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return &SwiftThanosObjectClient{ | ||
| client: bucket, | ||
| }, nil | ||
| } | ||
|
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| func (s *SwiftThanosObjectClient) Stop() {} | ||
|
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| // ObjectExists checks if a given objectKey exists in the Swift bucket | ||
| func (s *SwiftThanosObjectClient) ObjectExists(ctx context.Context, objectKey string) (bool, error) { | ||
| return s.client.Exists(ctx, objectKey) | ||
| } | ||
|
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| // PutObject puts the specified bytes into the configured Swift bucket at the provided key | ||
| func (s *SwiftThanosObjectClient) PutObject(ctx context.Context, objectKey string, object io.ReadSeeker) error { | ||
| return s.client.Upload(ctx, objectKey, object) | ||
| } | ||
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| // GetObject returns a reader and the size for the specified object key from the configured Swift bucket. | ||
| func (s *SwiftThanosObjectClient) GetObject(ctx context.Context, objectKey string) (io.ReadCloser, int64, error) { | ||
| reader, err := s.client.Get(ctx, objectKey) | ||
| if err != nil { | ||
| return nil, 0, err | ||
| } | ||
|
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| attr, err := s.client.Attributes(ctx, objectKey) | ||
| if err != nil { | ||
| return nil, 0, errors.Wrapf(err, "failed to get attributes for %s", objectKey) | ||
| } | ||
|
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| return reader, attr.Size, err | ||
| } | ||
|
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| // List objects with given prefix. | ||
| func (s *SwiftThanosObjectClient) List(ctx context.Context, prefix, delimiter string) ([]client.StorageObject, []client.StorageCommonPrefix, error) { | ||
| var storageObjects []client.StorageObject | ||
| var commonPrefixes []client.StorageCommonPrefix | ||
| var iterParams []objstore.IterOption | ||
|
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| // If delimiter is empty we want to list all files | ||
| if delimiter == "" { | ||
| iterParams = append(iterParams, objstore.WithRecursiveIter) | ||
| } | ||
|
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| s.client.Iter(ctx, prefix, func(objectKey string) error { | ||
| // CommonPrefixes are keys that have the prefix and have the delimiter | ||
| // as a suffix | ||
| if delimiter != "" && strings.HasSuffix(objectKey, delimiter) { | ||
| commonPrefixes = append(commonPrefixes, client.StorageCommonPrefix(objectKey)) | ||
| return nil | ||
| } | ||
| attr, err := s.client.Attributes(ctx, objectKey) | ||
| if err != nil { | ||
| return errors.Wrapf(err, "failed to get attributes for %s", objectKey) | ||
| } | ||
|
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| storageObjects = append(storageObjects, client.StorageObject{ | ||
| Key: objectKey, | ||
| ModifiedAt: attr.LastModified, | ||
| }) | ||
|
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| return nil | ||
|
|
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| }, iterParams...) | ||
|
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| return storageObjects, commonPrefixes, nil | ||
| } | ||
|
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| // DeleteObject deletes the specified object key from the configured Swift bucket. | ||
| func (s *SwiftThanosObjectClient) DeleteObject(ctx context.Context, objectKey string) error { | ||
| return s.client.Delete(ctx, objectKey) | ||
| } | ||
|
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| // IsObjectNotFoundErr returns true if error means that object is not found. Relevant to GetObject and DeleteObject operations. | ||
| func (s *SwiftThanosObjectClient) IsObjectNotFoundErr(err error) bool { | ||
| return s.client.IsObjNotFoundErr(err) | ||
| } | ||
|
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| // IsRetryableErr returns true if the request failed due to some retryable server-side scenario | ||
| func (s *SwiftThanosObjectClient) IsRetryableErr(err error) bool { return false } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| package openstack | ||
|
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| import ( | ||
| "bytes" | ||
| "context" | ||
| "sort" | ||
| "testing" | ||
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| "github.com/grafana/loki/pkg/storage/bucket/filesystem" | ||
| "github.com/grafana/loki/pkg/storage/chunk/client" | ||
| "github.com/stretchr/testify/require" | ||
| ) | ||
|
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| func TestSwiftThanosObjStore_List(t *testing.T) { | ||
| tests := []struct { | ||
| name string | ||
| prefix string | ||
| delimiter string | ||
| storageObjKeys []string | ||
| storageCommonPref []client.StorageCommonPrefix | ||
| wantErr error | ||
| }{ | ||
| { | ||
| "list_top_level_only", | ||
| "", | ||
| "/", | ||
| []string{"top-level-file-1", "top-level-file-2"}, | ||
| []client.StorageCommonPrefix{"dir-1/", "dir-2/", "depply/"}, | ||
| nil, | ||
| }, | ||
| { | ||
| "list_all_dir_1", | ||
| "dir-1", | ||
| "", | ||
| []string{"dir-1/file-1", "dir-1/file-2"}, | ||
| nil, | ||
| nil, | ||
| }, | ||
| { | ||
| "list_recursive", | ||
| "", | ||
| "", | ||
| []string{ | ||
| "top-level-file-1", | ||
| "top-level-file-2", | ||
| "dir-1/file-1", | ||
| "dir-1/file-2", | ||
| "dir-2/file-3", | ||
| "dir-2/file-4", | ||
| "dir-2/file-5", | ||
| "depply/nested/folder/a", | ||
| "depply/nested/folder/b", | ||
| "depply/nested/folder/c", | ||
| }, | ||
| nil, | ||
| nil, | ||
| }, | ||
| { | ||
| "unknown_prefix", | ||
| "test", | ||
| "", | ||
| []string{}, | ||
| nil, | ||
| nil, | ||
| }, | ||
| { | ||
| "only_storage_common_prefix", | ||
| "depply/", | ||
| "/", | ||
| []string{}, | ||
| []client.StorageCommonPrefix{ | ||
| "depply/nested/", | ||
| }, | ||
| nil, | ||
| }, | ||
| } | ||
|
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| for _, tt := range tests { | ||
| config := filesystem.Config{ | ||
| Directory: t.TempDir(), | ||
| } | ||
| newBucket, err := filesystem.NewBucketClient(config) | ||
| require.NoError(t, err) | ||
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| buff := bytes.NewBufferString("foo") | ||
| require.NoError(t, newBucket.Upload(context.Background(), "top-level-file-1", buff)) | ||
| require.NoError(t, newBucket.Upload(context.Background(), "top-level-file-2", buff)) | ||
| require.NoError(t, newBucket.Upload(context.Background(), "dir-1/file-1", buff)) | ||
| require.NoError(t, newBucket.Upload(context.Background(), "dir-1/file-2", buff)) | ||
| require.NoError(t, newBucket.Upload(context.Background(), "dir-2/file-3", buff)) | ||
| require.NoError(t, newBucket.Upload(context.Background(), "dir-2/file-4", buff)) | ||
| require.NoError(t, newBucket.Upload(context.Background(), "dir-2/file-5", buff)) | ||
| require.NoError(t, newBucket.Upload(context.Background(), "depply/nested/folder/a", buff)) | ||
| require.NoError(t, newBucket.Upload(context.Background(), "depply/nested/folder/b", buff)) | ||
| require.NoError(t, newBucket.Upload(context.Background(), "depply/nested/folder/c", buff)) | ||
|
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| openstackClient := &SwiftThanosObjectClient{} | ||
| openstackClient.client = newBucket | ||
|
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| storageObj, storageCommonPref, err := openstackClient.List(context.Background(), tt.prefix, tt.delimiter) | ||
| if tt.wantErr != nil { | ||
| require.Equal(t, tt.wantErr.Error(), err.Error()) | ||
| continue | ||
| } | ||
|
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| keys := []string{} | ||
| for _, key := range storageObj { | ||
| keys = append(keys, key.Key) | ||
| } | ||
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| sort.Slice(tt.storageObjKeys, func(i, j int) bool { | ||
| return tt.storageObjKeys[i] < tt.storageObjKeys[j] | ||
| }) | ||
| sort.Slice(tt.storageCommonPref, func(i, j int) bool { | ||
| return tt.storageCommonPref[i] < tt.storageCommonPref[j] | ||
| }) | ||
|
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| require.NoError(t, err) | ||
| require.Equal(t, tt.storageObjKeys, keys) | ||
| require.Equal(t, tt.storageCommonPref, storageCommonPref) | ||
| } | ||
| } |
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Did you edit this file directly? Or is this change automatically generated? The configuration reference should be updated in docs/sources/configure/index.template.
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I did so directly.. thanks for pointing this out!