forked from cosmos/cosmos-sdk
/
keys.go
72 lines (62 loc) · 2.42 KB
/
keys.go
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package v046
import (
"time"
"github.com/cosmos/cosmos-sdk/internal/conv"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/types/address"
"github.com/cosmos/cosmos-sdk/types/kv"
)
// Keys for store prefixes
// Items are stored with the following key: values
//
// - 0x01<grant_Bytes>: Grant
// - 0x02<grant_expiration_Bytes>: GrantQueueItem
var (
GrantPrefix = []byte{0x01}
GrantQueuePrefix = []byte{0x02}
)
// GrantQueueKey - return grant queue store key
// Key format is
//
// - 0x02<grant_expiration_Bytes>: GrantQueueItem
func GrantQueueKey(expiration time.Time, granter sdk.AccAddress, grantee sdk.AccAddress) []byte {
exp := sdk.FormatTimeBytes(expiration)
granter = address.MustLengthPrefix(granter)
grantee = address.MustLengthPrefix(grantee)
l := 1 + len(exp) + len(granter) + len(grantee)
key := make([]byte, l)
copy(key, GrantQueuePrefix)
copy(key[1:], exp)
copy(key[1+len(exp):], granter)
copy(key[1+len(exp)+len(granter):], grantee)
return key
}
// GrantStoreKey - return authorization store key
// Items are stored with the following key: values
//
// - 0x01<granterAddressLen (1 Byte)><granterAddress_Bytes><granteeAddressLen (1 Byte)><granteeAddress_Bytes><msgType_Bytes>: Grant
func GrantStoreKey(grantee sdk.AccAddress, granter sdk.AccAddress, msgType string) []byte {
m := conv.UnsafeStrToBytes(msgType)
granter = address.MustLengthPrefix(granter)
grantee = address.MustLengthPrefix(grantee)
l := 1 + len(grantee) + len(granter) + len(m)
key := make([]byte, l)
copy(key, GrantPrefix)
copy(key[1:], granter)
copy(key[1+len(granter):], grantee)
copy(key[l-len(m):], m)
return key
}
// ParseGrantKey - split granter, grantee address and msg type from the authorization key
func ParseGrantKey(key []byte) (granterAddr, granteeAddr sdk.AccAddress, msgType string) {
// key is of format:
// <granterAddressLen (1 Byte)><granterAddress_Bytes><granteeAddressLen (1 Byte)><granteeAddress_Bytes><msgType_Bytes>
kv.AssertKeyAtLeastLength(key, 2)
granterAddrLen := key[0]
kv.AssertKeyAtLeastLength(key, int(2+granterAddrLen))
granterAddr = sdk.AccAddress(key[1 : 1+granterAddrLen])
granteeAddrLen := int(key[1+granterAddrLen])
kv.AssertKeyAtLeastLength(key, 3+int(granterAddrLen+byte(granteeAddrLen)))
granteeAddr = sdk.AccAddress(key[2+granterAddrLen : 2+granterAddrLen+byte(granteeAddrLen)])
return granterAddr, granteeAddr, conv.UnsafeBytesToStr(key[2+granterAddrLen+byte(granteeAddrLen):])
}