/
helpers.go
71 lines (58 loc) · 2.49 KB
/
helpers.go
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package v043
import (
"github.com/cosmos/cosmos-sdk/store/prefix"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/types/address"
v042auth "github.com/cosmos/cosmos-sdk/x/auth/migrations/v042"
)
// MigratePrefixAddress is a helper function that migrates all keys of format:
// prefix_bytes | address_bytes
// into format:
// prefix_bytes | address_len (1 byte) | address_bytes
func MigratePrefixAddress(store sdk.KVStore, prefixBz []byte) {
oldStore := prefix.NewStore(store, prefixBz)
oldStoreIter := oldStore.Iterator(nil, nil)
defer oldStoreIter.Close()
for ; oldStoreIter.Valid(); oldStoreIter.Next() {
addr := oldStoreIter.Key()
newStoreKey := prefixBz
newStoreKey = append(newStoreKey, address.MustLengthPrefix(addr)...)
// Set new key on store. Values don't change.
store.Set(newStoreKey, oldStoreIter.Value())
oldStore.Delete(oldStoreIter.Key())
}
}
// MigratePrefixAddressBytes is a helper function that migrates all keys of format:
// prefix_bytes | address_bytes | arbitrary_bytes
// into format:
// prefix_bytes | address_len (1 byte) | address_bytes | arbitrary_bytes
func MigratePrefixAddressBytes(store sdk.KVStore, prefixBz []byte) {
oldStore := prefix.NewStore(store, prefixBz)
oldStoreIter := oldStore.Iterator(nil, nil)
defer oldStoreIter.Close()
for ; oldStoreIter.Valid(); oldStoreIter.Next() {
addr := oldStoreIter.Key()[:v042auth.AddrLen]
endBz := oldStoreIter.Key()[v042auth.AddrLen:]
newStoreKey := append(append(prefixBz, address.MustLengthPrefix(addr)...), endBz...)
// Set new key on store. Values don't change.
store.Set(newStoreKey, oldStoreIter.Value())
oldStore.Delete(oldStoreIter.Key())
}
}
// MigratePrefixAddressAddress is a helper function that migrates all keys of format:
// prefix_bytes | address_1_bytes | address_2_bytes
// into format:
// prefix_bytes | address_1_len (1 byte) | address_1_bytes | address_2_len (1 byte) | address_2_bytes
func MigratePrefixAddressAddress(store sdk.KVStore, prefixBz []byte) {
oldStore := prefix.NewStore(store, prefixBz)
oldStoreIter := oldStore.Iterator(nil, nil)
defer oldStoreIter.Close()
for ; oldStoreIter.Valid(); oldStoreIter.Next() {
addr1 := oldStoreIter.Key()[:v042auth.AddrLen]
addr2 := oldStoreIter.Key()[v042auth.AddrLen:]
newStoreKey := append(append(prefixBz, address.MustLengthPrefix(addr1)...), address.MustLengthPrefix(addr2)...)
// Set new key on store. Values don't change.
store.Set(newStoreKey, oldStoreIter.Value())
oldStore.Delete(oldStoreIter.Key())
}
}