/
store.go
302 lines (260 loc) · 8.28 KB
/
store.go
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package v3
import (
"fmt"
"github.com/cosmos/cosmos-sdk/codec"
codectypes "github.com/cosmos/cosmos-sdk/codec/types"
"github.com/cosmos/cosmos-sdk/store/prefix"
storetypes "github.com/cosmos/cosmos-sdk/store/types"
sdk "github.com/cosmos/cosmos-sdk/types"
v2 "github.com/desmos-labs/desmos/v5/x/posts/legacy/v2"
v4 "github.com/desmos-labs/desmos/v5/x/posts/legacy/v4"
"github.com/desmos-labs/desmos/v5/x/posts/types"
)
// MigrateStore performs in-place store migrations from v2 to v3.
// During the migration, the following operations are performed:
// - convert all the existing posts
// - convert all the existing attachments
// - convert all the existing user answers
func MigrateStore(ctx sdk.Context, storeKey storetypes.StoreKey, cdc codec.BinaryCodec) error {
store := ctx.KVStore(storeKey)
// Migrate all the posts
err := migratePosts(store, cdc)
if err != nil {
return err
}
// Migrate the attachments
err = migrateAttachments(store, cdc)
if err != nil {
return err
}
// Migrate the user answers
err = migrateUserAnswers(store, cdc)
if err != nil {
return err
}
return nil
}
// migratePosts migrates the posts preset inside the store from v2 to v3
func migratePosts(store sdk.KVStore, cdc codec.BinaryCodec) error {
prefixStore := prefix.NewStore(store, types.PostPrefix)
iterator := prefixStore.Iterator(nil, nil)
// Get all the posts
var v2Posts []v2.Post
for ; iterator.Valid(); iterator.Next() {
var v2Post v2.Post
cdc.MustUnmarshal(iterator.Value(), &v2Post)
v2Posts = append(v2Posts, v2Post)
}
// Close the iterator
err := iterator.Close()
if err != nil {
return err
}
// Convert the posts
for _, v2Post := range v2Posts {
v3Post := v4.NewPost(
v2Post.SubspaceID,
v2Post.SectionID,
v2Post.ID,
v2Post.ExternalID,
v2Post.Text,
v2Post.Author,
v2Post.ConversationID,
migrateEntities(v2Post.Entities),
nil,
migratePostReferences(v2Post.ReferencedPosts),
migrateReplySettings(v2Post.ReplySettings),
v2Post.CreationDate,
v2Post.LastEditedDate,
)
// Save the post
store.Set(types.PostStoreKey(v3Post.SubspaceID, v3Post.ID), cdc.MustMarshal(&v3Post))
}
return nil
}
// migrateEntities migrates the given entities from v2 to v3
func migrateEntities(v2Entities *v2.Entities) *v4.Entities {
if v2Entities == nil {
return nil
}
return v4.NewEntities(
migrateTags(v2Entities.Hashtags),
migrateTags(v2Entities.Mentions),
migrateUrls(v2Entities.Urls),
)
}
// migrateTags migrates the given tags from v2 to v3
func migrateTags(v2Tags []v2.Tag) []v4.TextTag {
if v2Tags == nil {
return nil
}
v3Tags := make([]v4.TextTag, len(v2Tags))
for i, v2Tag := range v2Tags {
v3Tags[i] = v4.NewTextTag(v2Tag.Start, v2Tag.End, v2Tag.Tag)
}
return v3Tags
}
// migrateUrls migrates the given urls from v2 to v3
func migrateUrls(v2Urls []v2.Url) []v4.Url {
if v2Urls == nil {
return nil
}
v3Urls := make([]v4.Url, len(v2Urls))
for i, v2Url := range v2Urls {
v3Urls[i] = v4.NewURL(v2Url.Start, v2Url.End, v2Url.Url, v2Url.DisplayUrl)
}
return v3Urls
}
// migratePostReferences migrates the given references from v2 to v3
func migratePostReferences(v2References []v2.PostReference) []v4.PostReference {
if v2References == nil {
return nil
}
v3References := make([]v4.PostReference, len(v2References))
for i, v2Reference := range v2References {
v3References[i] = v4.NewPostReference(
migratePostReferenceType(v2Reference.Type),
v2Reference.PostID,
v2Reference.Position,
)
}
return v3References
}
// migratePostReferenceType migrates the given post reference type from v2 to v3
func migratePostReferenceType(v2Type v2.PostReferenceType) v4.PostReferenceType {
switch v2Type {
case v2.POST_REFERENCE_TYPE_UNSPECIFIED:
return v4.POST_REFERENCE_TYPE_UNSPECIFIED
case v2.POST_REFERENCE_TYPE_REPLY:
return v4.POST_REFERENCE_TYPE_REPLY
case v2.POST_REFERENCE_TYPE_QUOTE:
return v4.POST_REFERENCE_TYPE_QUOTE
case v2.POST_REFERENCE_TYPE_REPOST:
return v4.POST_REFERENCE_TYPE_REPOST
default:
panic(fmt.Errorf("invalid post reference type: %s", v2Type))
}
}
// migrateReplySettings migrates the given reply setting from v2 to v3
func migrateReplySettings(settings v2.ReplySetting) v4.ReplySetting {
switch settings {
case v2.REPLY_SETTING_UNSPECIFIED:
return v4.REPLY_SETTING_UNSPECIFIED
case v2.REPLY_SETTING_EVERYONE:
return v4.REPLY_SETTING_EVERYONE
case v2.REPLY_SETTING_FOLLOWERS:
return v4.REPLY_SETTING_FOLLOWERS
case v2.REPLY_SETTING_MUTUAL:
return v4.REPLY_SETTING_MUTUAL
case v2.REPLY_SETTING_MENTIONS:
return v4.REPLY_SETTING_MENTIONS
default:
panic(fmt.Errorf("invalid reply settings value: %s", settings))
}
}
// migrateAttachments migrates the attachments present inside the store from v2 to v3
func migrateAttachments(store sdk.KVStore, cdc codec.BinaryCodec) error {
prefixStore := prefix.NewStore(store, types.AttachmentPrefix)
iterator := prefixStore.Iterator(nil, nil)
// Get all the attachments
var v2Attachments []v2.Attachment
for ; iterator.Valid(); iterator.Next() {
var v2Attachment v2.Attachment
cdc.MustUnmarshal(iterator.Value(), &v2Attachment)
v2Attachments = append(v2Attachments, v2Attachment)
}
// Close the iterator
err := iterator.Close()
if err != nil {
return err
}
// Convert the attachments
v3Attachments := convertAttachments(v2Attachments)
for i, v3Attachment := range v3Attachments {
// Save the attachment
store.Set(
types.AttachmentStoreKey(v3Attachment.SubspaceID, v3Attachment.PostID, v3Attachment.ID),
cdc.MustMarshal(&v3Attachments[i]),
)
}
return nil
}
// convertAttachments converts the given attachments from v2 to v3
func convertAttachments(v2Attachment []v2.Attachment) []v4.Attachment {
v3Attachments := make([]v4.Attachment, len(v2Attachment))
for i, attachment := range v2Attachment {
v3Attachments[i] = v4.NewAttachment(
attachment.SubspaceID,
attachment.PostID,
attachment.ID,
convertAttachmentContent(attachment.Content),
)
}
return v3Attachments
}
// convertAttachmentContent converts the given attachment content from v2 to v3
func convertAttachmentContent(contentAny *codectypes.Any) v4.AttachmentContent {
switch content := contentAny.GetCachedValue().(v2.AttachmentContent).(type) {
case *v2.Media:
return v4.NewMedia(content.Uri, content.MimeType)
case *v2.Poll:
return v4.NewPoll(content.Question,
convertProvidedAnswers(content.ProvidedAnswers),
content.EndDate,
content.AllowsMultipleAnswers,
content.AllowsAnswerEdits,
convertTallyResults(content.FinalTallyResults),
)
default:
panic(fmt.Errorf("invalid content type: %T", contentAny.GetCachedValue()))
}
}
// convertTallyResults converts the given poll tally results from v2 to v3
func convertTallyResults(v2Results *v2.PollTallyResults) *v4.PollTallyResults {
if v2Results == nil {
return nil
}
v3Results := make([]v4.PollTallyResults_AnswerResult, len(v2Results.Results))
for i, result := range v2Results.Results {
v3Results[i] = v4.NewAnswerResult(result.AnswerIndex, result.Votes)
}
return v4.NewPollTallyResults(v3Results)
}
// convertProvidedAnswers converts the given poll provided answers from v2 to v3
func convertProvidedAnswers(v2Answers []v2.Poll_ProvidedAnswer) []v4.Poll_ProvidedAnswer {
v3Answers := make([]v4.Poll_ProvidedAnswer, len(v2Answers))
for i, answer := range v2Answers {
v3Answers[i] = v4.NewProvidedAnswer(answer.Text, convertAttachments(answer.Attachments))
}
return v3Answers
}
// migrateUserAnswers migrates all the user answers present inside the store from v2 to v3
func migrateUserAnswers(store sdk.KVStore, cdc codec.BinaryCodec) error {
prefixStore := prefix.NewStore(store, types.UserAnswerPrefix)
iterator := prefixStore.Iterator(nil, nil)
// Get all the answers
var v2Answers []v2.UserAnswer
for ; iterator.Valid(); iterator.Next() {
var v2Answer v2.UserAnswer
cdc.MustUnmarshal(iterator.Value(), &v2Answer)
v2Answers = append(v2Answers, v2Answer)
}
// Close the iterator
err := iterator.Close()
if err != nil {
return err
}
// Convert the answers
for _, v2Answer := range v2Answers {
v3Answer := v4.NewUserAnswer(
v2Answer.SubspaceID,
v2Answer.PostID,
v2Answer.PollID,
v2Answer.AnswersIndexes,
v2Answer.User,
)
// Save the attachment
store.Set(types.PollAnswerStoreKey(v3Answer.SubspaceID, v3Answer.PostID, v3Answer.PollID, v3Answer.User), cdc.MustMarshal(&v3Answer))
}
return nil
}