feat(collections): Initialise core (Prefix, KeyEncoder, ValueEncoder, Map) (#14134)

Co-authored-by: testinginprod <testinginprod@somewhere.idk>
Co-authored-by: Aaron Craelius <aaron@regen.network>
This commit is contained in:
testinginprod 2022-12-08 16:57:21 +01:00 committed by GitHub
parent bd59987df1
commit fca24b6687
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
14 changed files with 932 additions and 0 deletions

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@ -492,6 +492,28 @@ jobs:
with:
projectBaseDir: tools/rosetta/
test-collections:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v3
- uses: actions/setup-go@v3
with:
go-version: 1.19.4
cache: true
cache-dependency-path: collections/go.sum
- uses: technote-space/get-diff-action@v6.1.2
id: git_diff
with:
PATTERNS: |
collections/**/*.go
collections/go.mod
collections/go.sum
- name: tests
if: env.GIT_DIFF
run: |
cd collections
go test -mod=readonly -timeout 30m -coverprofile=coverage.out -covermode=atomic -tags='norace ledger test_ledger_mock rocksdb_build' ./...
test-cosmovisor:
runs-on: ubuntu-latest
steps:

104
collections/collections.go Normal file
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@ -0,0 +1,104 @@
package collections
import (
"errors"
"math"
storetypes "github.com/cosmos/cosmos-sdk/store/types"
)
var (
// ErrNotFound is returned when the provided key is not present in the StorageProvider.
ErrNotFound = errors.New("collections: not found")
// ErrEncoding is returned when something fails during key or value encoding/decoding.
ErrEncoding = errors.New("collections: encoding error")
)
// StorageProvider is implemented by types
// which provide a KVStore given a StoreKey.
// It represents sdk.Context, it exists to
// reduce dependencies.
type StorageProvider interface {
// KVStore returns a KVStore given its StoreKey.
KVStore(key storetypes.StoreKey) storetypes.KVStore
}
// Prefix defines a segregation namespace
// for specific collections objects.
type Prefix struct {
raw []byte // TODO(testinginprod): maybe add a humanized prefix field?
}
// Bytes returns the raw Prefix bytes.
func (n Prefix) Bytes() []byte { return n.raw }
// NewPrefix returns a Prefix given the provided namespace identifier.
// In the same module, no prefixes should share the same starting bytes
// meaning that having two namespaces whose bytes representation is:
// p1 := []byte("prefix")
// p2 := []byte("prefix1")
// yields to iterations of p1 overlapping over p2.
// If a numeric prefix is provided, it must be between 0 and 255 (uint8).
// If out of bounds this function will panic.
// Reason for which this function is constrained to `int` instead of `uint8` is for
// API ergonomics, golang's type inference will infer int properly but not uint8
// meaning that developers would need to write NewPrefix(uint8(number)) for numeric
// prefixes.
func NewPrefix[T interface{ int | string | []byte }](identifier T) Prefix {
i := any(identifier)
var prefix []byte
switch c := i.(type) {
case int:
if c > math.MaxUint8 || c < 0 {
panic("invalid integer prefix value: must be between 0 and 255")
}
prefix = []byte{uint8(c)}
case string:
prefix = []byte(c)
case []byte:
identifierCopy := make([]byte, len(c))
copy(identifierCopy, c)
prefix = identifierCopy
}
return Prefix{raw: prefix}
}
// KeyCodec defines a generic interface which is implemented
// by types that are capable of encoding and decoding collections keys.
type KeyCodec[T any] interface {
// Encode writes the key bytes into the buffer. Returns the number of
// bytes written. The implementer must expect the buffer to be at least
// of length equal to Size(K) for all encodings.
// It must also return the number of written bytes which must be
// equal to Size(K) for all encodings not involving varints.
// In case of encodings involving varints then the returned
// number of written bytes is allowed to be smaller than Size(K).
Encode(buffer []byte, key T) (int, error)
// Decode reads from the provided bytes buffer to decode
// the key T. Returns the number of bytes read, the type T
// or an error in case of decoding failure.
Decode(buffer []byte) (int, T, error)
// Size returns the buffer size need to encode key T in binary format.
// The returned value must match what is computed by Encode for all
// encodings except the ones involving varints. Varints are expected
// to return the maximum varint bytes buffer length, at the risk of
// over-estimating in order to pick the most performant path.
Size(key T) int
// Stringify returns a string representation of T.
Stringify(key T) string
// KeyType returns a string identifier for the type of the key.
KeyType() string
}
// ValueCodec defines a generic interface which is implemented
// by types that are capable of encoding and decoding collection values.
type ValueCodec[T any] interface {
// Encode encodes the value T into binary format.
Encode(value T) ([]byte, error)
// Decode returns the type T given its binary representation.
Decode(b []byte) (T, error)
// Stringify returns a string representation of T.
Stringify(value T) string
// ValueType returns the identifier for the type.
ValueType() string
}

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@ -0,0 +1,74 @@
package collections
import (
"context"
"math"
"testing"
"github.com/cosmos/cosmos-sdk/store/mem"
"github.com/cosmos/cosmos-sdk/store/types"
"github.com/stretchr/testify/require"
)
var _ StorageProvider = (*mockStorageProvider)(nil)
type mockStorageProvider struct {
context.Context
store types.KVStore
}
func (m mockStorageProvider) KVStore(key types.StoreKey) types.KVStore {
return m.store
}
func deps() (types.StoreKey, context.Context) {
kv := mem.NewStore()
key := types.NewKVStoreKey("test")
return key, mockStorageProvider{store: kv}
}
// checkKeyCodec asserts the correct behaviour of a KeyCodec over the type T.
func checkKeyCodec[T any](t *testing.T, encoder KeyCodec[T], key T) {
buffer := make([]byte, encoder.Size(key))
written, err := encoder.Encode(buffer, key)
require.NoError(t, err)
require.Equal(t, len(buffer), written)
read, decodedKey, err := encoder.Decode(buffer)
require.NoError(t, err)
require.Equal(t, len(buffer), read, "encoded key and read bytes must have same size")
require.Equal(t, key, decodedKey, "encoding and decoding produces different keys")
}
// checkValueCodec asserts the correct behaviour of a ValueCodec over the type T.
func checkValueCodec[T any](t *testing.T, encoder ValueCodec[T], value T) {
encodedValue, err := encoder.Encode(value)
require.NoError(t, err)
decodedValue, err := encoder.Decode(encodedValue)
require.NoError(t, err)
require.Equal(t, value, decodedValue, "encoding and decoding produces different values")
}
func TestPrefix(t *testing.T) {
t.Run("panics on invalid int", func(t *testing.T) {
require.Panics(t, func() {
NewPrefix(math.MaxUint8 + 1)
})
})
t.Run("string", func(t *testing.T) {
require.Equal(t, []byte("prefix"), NewPrefix("prefix").Bytes())
})
t.Run("int", func(t *testing.T) {
require.Equal(t, []byte{0x1}, NewPrefix(1).Bytes())
})
t.Run("[]byte", func(t *testing.T) {
bytes := []byte("prefix")
prefix := NewPrefix(bytes)
require.Equal(t, bytes, prefix.Bytes())
// assert if modification happen they do not propagate to prefix
bytes[0] = 0x0
require.Equal(t, []byte("prefix"), prefix.Bytes())
})
}

53
collections/go.mod Normal file
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@ -0,0 +1,53 @@
module cosmossdk.io/collections
go 1.19
require (
github.com/cosmos/cosmos-sdk v0.46.0-beta2.0.20221207205747-f3be41836f4d
github.com/stretchr/testify v1.8.1
)
require (
cosmossdk.io/errors v1.0.0-beta.7 // indirect
github.com/btcsuite/btcd/btcec/v2 v2.3.2 // indirect
github.com/cespare/xxhash v1.1.0 // indirect
github.com/cespare/xxhash/v2 v2.1.2 // indirect
github.com/confio/ics23/go v0.9.0 // indirect
github.com/cosmos/gogoproto v1.4.3 // indirect
github.com/cosmos/gorocksdb v1.2.0 // indirect
github.com/davecgh/go-spew v1.1.1 // indirect
github.com/decred/dcrd/dcrec/secp256k1/v4 v4.1.0 // indirect
github.com/dgraph-io/badger/v2 v2.2007.4 // indirect
github.com/dgraph-io/ristretto v0.1.1 // indirect
github.com/dgryski/go-farm v0.0.0-20200201041132-a6ae2369ad13 // indirect
github.com/dustin/go-humanize v1.0.0 // indirect
github.com/go-kit/log v0.2.1 // indirect
github.com/go-logfmt/logfmt v0.5.1 // indirect
github.com/gogo/protobuf v1.3.2 // indirect
github.com/golang/glog v1.0.0 // indirect
github.com/golang/protobuf v1.5.2 // indirect
github.com/golang/snappy v0.0.4 // indirect
github.com/google/btree v1.1.2 // indirect
github.com/jmhodges/levigo v1.0.0 // indirect
github.com/klauspost/compress v1.15.12 // indirect
github.com/petermattis/goid v0.0.0-20180202154549-b0b1615b78e5 // indirect
github.com/pkg/errors v0.9.1 // indirect
github.com/pmezard/go-difflib v1.0.0 // indirect
github.com/sasha-s/go-deadlock v0.3.1 // indirect
github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7 // indirect
github.com/tendermint/go-amino v0.16.0 // indirect
github.com/tendermint/tendermint v0.37.0-rc2 // indirect
github.com/tendermint/tm-db v0.6.7 // indirect
go.etcd.io/bbolt v1.3.6 // indirect
golang.org/x/crypto v0.4.0 // indirect
golang.org/x/exp v0.0.0-20221019170559-20944726eadf // indirect
golang.org/x/net v0.3.0 // indirect
golang.org/x/sys v0.3.0 // indirect
golang.org/x/text v0.5.0 // indirect
google.golang.org/genproto v0.0.0-20221118155620-16455021b5e6 // indirect
google.golang.org/grpc v1.51.0 // indirect
google.golang.org/protobuf v1.28.1 // indirect
gopkg.in/yaml.v2 v2.4.0 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect
sigs.k8s.io/yaml v1.3.0 // indirect
)

314
collections/go.sum Normal file
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@ -0,0 +1,314 @@
cosmossdk.io/api v0.2.5 h1:XKq7CAxTWs7JObceQKkjdI9J+aLB8ofXDGBEaPcPsks=
cosmossdk.io/core v0.3.2 h1:KlQIufpJHJvOs7YLGTZsZcCo1WlkencDXepsr8STKZQ=
cosmossdk.io/depinject v1.0.0-alpha.3 h1:6evFIgj//Y3w09bqOUOzEpFj5tsxBqdc5CfkO7z+zfw=
cosmossdk.io/errors v1.0.0-beta.7 h1:gypHW76pTQGVnHKo6QBkb4yFOJjC+sUGRc5Al3Odj1w=
cosmossdk.io/errors v1.0.0-beta.7/go.mod h1:mz6FQMJRku4bY7aqS/Gwfcmr/ue91roMEKAmDUDpBfE=
cosmossdk.io/math v1.0.0-beta.4 h1:JtKedVLGzA0vv84xjYmZ75RKG35Kf2WwcFu8IjRkIIw=
filippo.io/edwards25519 v1.0.0-rc.1 h1:m0VOOB23frXZvAOK44usCgLWvtsxIoMCTBGJZlpmGfU=
github.com/99designs/go-keychain v0.0.0-20191008050251-8e49817e8af4 h1:/vQbFIOMbk2FiG/kXiLl8BRyzTWDw7gX/Hz7Dd5eDMs=
github.com/99designs/keyring v1.2.1 h1:tYLp1ULvO7i3fI5vE21ReQuj99QFSs7lGm0xWyJo87o=
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
github.com/ChainSafe/go-schnorrkel v0.0.0-20200405005733-88cbf1b4c40d h1:nalkkPQcITbvhmL4+C4cKA87NW0tfm3Kl9VXRoPywFg=
github.com/OneOfOne/xxhash v1.2.2 h1:KMrpdQIwFcEqXDklaen+P1axHaj9BSKzvpUUfnHldSE=
github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
github.com/armon/go-metrics v0.4.1 h1:hR91U9KYmb6bLBYLQjyM+3j+rcd/UhE+G78SFnF8gJA=
github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
github.com/bgentry/speakeasy v0.1.0 h1:ByYyxL9InA1OWqxJqqp2A5pYHUrCiAL6K3J+LKSsQkY=
github.com/btcsuite/btcd/btcec/v2 v2.3.2 h1:5n0X6hX0Zk+6omWcihdYvdAlGf2DfasC0GMf7DClJ3U=
github.com/btcsuite/btcd/btcec/v2 v2.3.2/go.mod h1:zYzJ8etWJQIv1Ogk7OzpWjowwOdXY1W/17j2MW85J04=
github.com/btcsuite/btcd/btcutil v1.1.2 h1:XLMbX8JQEiwMcYft2EGi8zPUkoa0abKIU6/BJSRsjzQ=
github.com/btcsuite/btcd/chaincfg/chainhash v1.0.1 h1:q0rUy8C/TYNBQS1+CGKw68tLOFYSNEs0TFnxxnS9+4U=
github.com/cenkalti/backoff v2.2.1+incompatible h1:tNowT99t7UNflLxfYYSlKYsBpXdEet03Pg2g16Swow4=
github.com/cenkalti/backoff/v4 v4.1.3 h1:cFAlzYUlVYDysBEH2T5hyJZMh3+5+WCBvSnK6Q8UtC4=
github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko=
github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
github.com/cespare/xxhash/v2 v2.1.2 h1:YRXhKfTDauu4ajMg1TPgFO5jnlC2HCbmLXMcTG5cbYE=
github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
github.com/confio/ics23/go v0.9.0 h1:cWs+wdbS2KRPZezoaaj+qBleXgUk5WOQFMP3CQFGTr4=
github.com/confio/ics23/go v0.9.0/go.mod h1:4LPZ2NYqnYIVRklaozjNR1FScgDJ2s5Xrp+e/mYVRak=
github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk=
github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
github.com/cosmos/btcutil v1.0.5 h1:t+ZFcX77LpKtDBhjucvnOH8C2l2ioGsBNEQ3jef8xFk=
github.com/cosmos/cosmos-proto v1.0.0-beta.1 h1:iDL5qh++NoXxG8hSy93FdYJut4XfgbShIocllGaXx/0=
github.com/cosmos/cosmos-sdk v0.46.0-beta2.0.20221207205747-f3be41836f4d h1:e2ztNCnXjNZa6iHq5vkCS2gjZHORllziv4PXlqTvINg=
github.com/cosmos/cosmos-sdk v0.46.0-beta2.0.20221207205747-f3be41836f4d/go.mod h1:cUoiK/1nXgIJi+/e50R/PqKX9QBODxzH/9oKOtewfOA=
github.com/cosmos/go-bip39 v1.0.0 h1:pcomnQdrdH22njcAatO0yWojsUnCO3y2tNoV1cb6hHY=
github.com/cosmos/gogogateway v1.2.0 h1:Ae/OivNhp8DqBi/sh2A8a1D0y638GpL3tkmLQAiKxTE=
github.com/cosmos/gogoproto v1.4.3 h1:RP3yyVREh9snv/lsOvmsAPQt8f44LgL281X0IOIhhcI=
github.com/cosmos/gogoproto v1.4.3/go.mod h1:0hLIG5TR7IvV1fme1HCFKjfzW9X2x0Mo+RooWXCnOWU=
github.com/cosmos/gorocksdb v1.2.0 h1:d0l3jJG8M4hBouIZq0mDUHZ+zjOx044J3nGRskwTb4Y=
github.com/cosmos/gorocksdb v1.2.0/go.mod h1:aaKvKItm514hKfNJpUJXnnOWeBnk2GL4+Qw9NHizILw=
github.com/cosmos/iavl v0.19.4 h1:t82sN+Y0WeqxDLJRSpNd8YFX5URIrT+p8n6oJbJ2Dok=
github.com/cosmos/ledger-cosmos-go v0.12.1 h1:sMBxza5p/rNK/06nBSNmsI/WDqI0pVJFVNihy1Y984w=
github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
github.com/creachadair/taskgroup v0.3.2 h1:zlfutDS+5XG40AOxcHDSThxKzns8Tnr9jnr6VqkYlkM=
github.com/danieljoos/wincred v1.1.2 h1:QLdCxFs1/Yl4zduvBdcHB8goaYk9RARS2SgLLRuAyr0=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/decred/dcrd/crypto/blake256 v1.0.0 h1:/8DMNYp9SGi5f0w7uCm6d6M4OU2rGFK09Y2A4Xv7EE0=
github.com/decred/dcrd/dcrec/secp256k1/v4 v4.1.0 h1:HbphB4TFFXpv7MNrT52FGrrgVXF1owhMVTHFZIlnvd4=
github.com/decred/dcrd/dcrec/secp256k1/v4 v4.1.0/go.mod h1:DZGJHZMqrU4JJqFAWUS2UO1+lbSKsdiOoYi9Zzey7Fc=
github.com/desertbit/timer v0.0.0-20180107155436-c41aec40b27f h1:U5y3Y5UE0w7amNe7Z5G/twsBW0KEalRQXZzf8ufSh9I=
github.com/dgraph-io/badger/v2 v2.2007.4 h1:TRWBQg8UrlUhaFdco01nO2uXwzKS7zd+HVdwV/GHc4o=
github.com/dgraph-io/badger/v2 v2.2007.4/go.mod h1:vSw/ax2qojzbN6eXHIx6KPKtCSHJN/Uz0X0VPruTIhk=
github.com/dgraph-io/ristretto v0.0.3-0.20200630154024-f66de99634de/go.mod h1:KPxhHT9ZxKefz+PCeOGsrHpl1qZ7i70dGTu2u+Ahh6E=
github.com/dgraph-io/ristretto v0.1.1 h1:6CWw5tJNgpegArSHpNHJKldNeq03FQCwYvfMVWajOK8=
github.com/dgraph-io/ristretto v0.1.1/go.mod h1:S1GPSBCYCIhmVNfcth17y2zZtQT6wzkzgwUve0VDWWA=
github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
github.com/dgryski/go-farm v0.0.0-20200201041132-a6ae2369ad13 h1:fAjc9m62+UWV/WAFKLNi6ZS0675eEUC9y3AlwSbQu1Y=
github.com/dgryski/go-farm v0.0.0-20200201041132-a6ae2369ad13/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo=
github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
github.com/dvsekhvalnov/jose2go v1.5.0 h1:3j8ya4Z4kMCwT5nXIKFSV84YS+HdqSSO0VsTQxaLAeM=
github.com/facebookgo/ensure v0.0.0-20200202191622-63f1cf65ac4c h1:8ISkoahWXwZR41ois5lSJBSVw4D0OV19Ht/JSTzvSv0=
github.com/facebookgo/stack v0.0.0-20160209184415-751773369052 h1:JWuenKqqX8nojtoVVWjGfOF9635RETekkoH6Cc9SX0A=
github.com/facebookgo/subset v0.0.0-20200203212716-c811ad88dec4 h1:7HZCaLC5+BZpmbhCOZJ293Lz68O7PYrF2EzeiFMwCLk=
github.com/felixge/httpsnoop v1.0.2 h1:+nS9g82KMXccJ/wp0zyRW9ZBHFETmMGtkk+2CTTrW4o=
github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
github.com/fsnotify/fsnotify v1.6.0 h1:n+5WquG0fcWoWp6xPWfHdbskMCQaFnG6PfBrh1Ky4HY=
github.com/go-kit/kit v0.12.0 h1:e4o3o3IsBfAKQh5Qbbiqyfu97Ku7jrO/JbohvztANh4=
github.com/go-kit/log v0.2.1 h1:MRVx0/zhvdseW+Gza6N9rVzU/IVzaeE1SFI4raAhmBU=
github.com/go-kit/log v0.2.1/go.mod h1:NwTd00d/i8cPZ3xOwwiv2PO5MOcx78fFErGNcVmBjv0=
github.com/go-logfmt/logfmt v0.5.1 h1:otpy5pqBCBZ1ng9RQ0dPu4PN7ba75Y/aA+UpowDyNVA=
github.com/go-logfmt/logfmt v0.5.1/go.mod h1:WYhtIu8zTZfxdn5+rREduYbwxfcBr/Vr6KEVveWlfTs=
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github.com/tendermint/tendermint v0.37.0-rc2 h1:2n1em+jfbhSv6QnBj8F6KHCpbIzZCB8KgcjidJUQNlY=
github.com/tendermint/tendermint v0.37.0-rc2/go.mod h1:uYQO9DRNPeZROa9X3hJOZpYcVREDC2/HST+EiU5g2+A=
github.com/tendermint/tm-db v0.6.7 h1:fE00Cbl0jayAoqlExN6oyQJ7fR/ZtoVOmvPJ//+shu8=
github.com/tendermint/tm-db v0.6.7/go.mod h1:byQDzFkZV1syXr/ReXS808NxA2xvyuuVgXOJ/088L6I=
github.com/ugorji/go/codec v0.0.0-20181204163529-d75b2dcb6bc8/go.mod h1:VFNgLljTbGfSG7qAOspJ7OScBnGdDN/yBr0sguwnwf0=
github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
github.com/zondax/hid v0.9.1 h1:gQe66rtmyZ8VeGFcOpbuH3r7erYtNEAezCAYu8LdkJo=
github.com/zondax/ledger-go v0.14.0 h1:dlMC7aO8Wss1CxBq2I96kZ69Nh1ligzbs8UWOtq/AsA=
go.etcd.io/bbolt v1.3.6 h1:/ecaJf0sk1l4l6V4awd65v2C3ILy7MSj+s/x1ADCIMU=
go.etcd.io/bbolt v1.3.6/go.mod h1:qXsaaIqmgQH0T+OPdb99Bf+PKfBBQVAdyD6TY9G8XM4=
golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/crypto v0.4.0 h1:UVQgzMY87xqpKNgb+kDsll2Igd33HszWHFLmpaRMq/8=
golang.org/x/crypto v0.4.0/go.mod h1:3quD/ATkf6oY+rnes5c3ExXTbLc8mueNue5/DoinL80=
golang.org/x/exp v0.0.0-20221019170559-20944726eadf h1:nFVjjKDgNY37+ZSYCJmtYf7tOlfQswHqplG2eosjOMg=
golang.org/x/exp v0.0.0-20221019170559-20944726eadf/go.mod h1:cyybsKvd6eL0RnXn6p/Grxp8F5bW7iYuBgsNCOHpMYE=
golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20200520004742-59133d7f0dd7/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
golang.org/x/net v0.0.0-20200813134508-3edf25e44fcc/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
golang.org/x/net v0.3.0 h1:VWL6FNY2bEEmsGVKabSlHu5Irp34xmMRoqb/9lF9lxk=
golang.org/x/net v0.3.0/go.mod h1:MBQ8lrhLObU/6UmLb4fmbmk5OcyYmqtbGd/9yIeKjEE=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20181205085412-a5c9d58dba9a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190904154756-749cb33beabd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20191120155948-bd437916bb0e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200519105757-fe76b779f299/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200814200057-3d37ad5750ed/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200923182605-d9f96fdee20d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20221010170243-090e33056c14/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.3.0 h1:w8ZOecv6NaNa/zC8944JTU3vz4u6Lagfk4RPQxv92NQ=
golang.org/x/sys v0.3.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/term v0.3.0 h1:qoo4akIqOcDME5bhc/NgxUdovd6BSS2uMsVjB56q1xI=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.5.0 h1:OLmvp0KP+FVG99Ct/qFiL/Fhk4zp4QQnZ7b2U+5piUM=
golang.org/x/text v0.5.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
google.golang.org/genproto v0.0.0-20221118155620-16455021b5e6 h1:a2S6M0+660BgMNl++4JPlcAO/CjkqYItDEZwkoDQK7c=
google.golang.org/genproto v0.0.0-20221118155620-16455021b5e6/go.mod h1:rZS5c/ZVYMaOGBfO68GWtjOw/eLaZM1X6iVtgjZ+EWg=
google.golang.org/grpc v1.51.0 h1:E1eGv1FTqoLIdnBCZufiSHgKjlqG6fKFf6pPWtMTh8U=
google.golang.org/grpc v1.51.0/go.mod h1:wgNDFcnuBGmxLKI/qn4T+m5BtEBYXJPvibbUPsAIPww=
google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
gopkg.in/ini.v1 v1.67.0 h1:Dgnx+6+nfE+IfzjUEISNeydPJh9AXNNsWbGP9KzCsOA=
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
nhooyr.io/websocket v1.8.6 h1:s+C3xAMLwGmlI31Nyn/eAehUlZPwfYZu2JXM621Q5/k=
pgregory.net/rapid v0.5.3 h1:163N50IHFqr1phZens4FQOdPgfJscR7a562mjQqeo4M=
sigs.k8s.io/yaml v1.3.0 h1:a2VclLzOGrwOHDiV8EfBGhvjHvP46CtW5j6POvhYGGo=
sigs.k8s.io/yaml v1.3.0/go.mod h1:GeOyir5tyXNByN85N/dRIT9es5UQNerPYEKK56eTBm8=

47
collections/item.go Normal file
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@ -0,0 +1,47 @@
package collections
import (
"context"
storetypes "github.com/cosmos/cosmos-sdk/store/types"
)
// NewItem instantiates a new Item instance, given the value encoder of the item V.
func NewItem[V any](sk storetypes.StoreKey, prefix Prefix, valueCodec ValueCodec[V]) Item[V] {
return (Item[V])(NewMap[noKey, V](sk, prefix, noKey{}, valueCodec))
}
// Item is a type declaration based on Map
// with a non-existent key.
type Item[V any] Map[noKey, V]
// Get gets the item, if it is not set it returns an ErrNotFound error.
// If value decoding fails then an ErrEncoding is returned.
func (i Item[V]) Get(ctx context.Context) (V, error) {
return (Map[noKey, V])(i).Get(ctx, noKey{})
}
// Set sets the item in the store. If Value encoding fails then an ErrEncoding is returned.
func (i Item[V]) Set(ctx context.Context, value V) error {
return (Map[noKey, V])(i).Set(ctx, noKey{}, value)
}
// Has reports whether the item exists in the store or not.
// Returns an error in case
func (i Item[V]) Has(ctx context.Context) (bool, error) {
return (Map[noKey, V])(i).Has(ctx, noKey{})
}
// Remove removes the item in the store.
func (i Item[V]) Remove(ctx context.Context) error {
return (Map[noKey, V])(i).Remove(ctx, noKey{})
}
// noKey defines a KeyCodec which decodes nothing.
type noKey struct{}
func (noKey) Stringify(_ noKey) string { return "no_key" }
func (noKey) KeyType() string { return "no_key" }
func (noKey) Size(_ noKey) int { return 0 }
func (noKey) Encode(_ []byte, _ noKey) (int, error) { return 0, nil }
func (noKey) Decode(_ []byte) (int, noKey, error) { return 0, noKey{}, nil }

32
collections/item_test.go Normal file
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@ -0,0 +1,32 @@
package collections
import (
"testing"
"github.com/stretchr/testify/require"
)
func TestItem(t *testing.T) {
sk, ctx := deps()
item := NewItem(sk, NewPrefix("item"), Uint64Value)
// set
err := item.Set(ctx, 1000)
require.NoError(t, err)
// get
i, err := item.Get(ctx)
require.NoError(t, err)
require.Equal(t, uint64(1000), i)
// has
has, err := item.Has(ctx)
require.NoError(t, err)
require.True(t, has)
// remove
err = item.Remove(ctx)
require.NoError(t, err)
has, err = item.Has(ctx)
require.NoError(t, err)
require.False(t, has)
}

38
collections/keys.go Normal file
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@ -0,0 +1,38 @@
package collections
import (
"encoding/binary"
"errors"
"fmt"
"strconv"
)
// Uint64Key can be used to encode uint64 keys.
// Encoding is big endian to retain ordering.
var Uint64Key KeyCodec[uint64] = uint64Key{}
var errDecodeKeySize = errors.New("decode error, wrong byte key size")
type uint64Key struct{}
func (u uint64Key) Encode(buffer []byte, key uint64) (int, error) {
binary.BigEndian.PutUint64(buffer, key)
return 8, nil
}
func (u uint64Key) Decode(buffer []byte) (int, uint64, error) {
if size := len(buffer); size < 8 {
return 0, 0, fmt.Errorf("%w: wanted at least 8, got: %d", errDecodeKeySize, size)
}
return 8, binary.BigEndian.Uint64(buffer), nil
}
func (u uint64Key) Size(_ uint64) int { return 8 }
func (u uint64Key) Stringify(key uint64) string {
return strconv.FormatUint(key, 10)
}
func (u uint64Key) KeyType() string {
return "uint64"
}

18
collections/keys_test.go Normal file
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@ -0,0 +1,18 @@
package collections
import (
"testing"
"github.com/stretchr/testify/require"
)
func TestUint64Key(t *testing.T) {
t.Run("bijective", func(t *testing.T) {
checkKeyCodec(t, Uint64Key, 55)
})
t.Run("invalid key size", func(t *testing.T) {
_, _, err := Uint64Key.Decode([]byte{0x0, 0x1})
require.ErrorIs(t, err, errDecodeKeySize)
})
}

134
collections/map.go Normal file
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@ -0,0 +1,134 @@
package collections
import (
"context"
"fmt"
storetypes "github.com/cosmos/cosmos-sdk/store/types"
)
// NewMap returns a Map given a StoreKey, a Prefix and the relative value and key encoders.
func NewMap[K, V any](
sk storetypes.StoreKey, prefix Prefix,
keyCodec KeyCodec[K], valueCodec ValueCodec[V],
) Map[K, V] {
return Map[K, V]{
kc: keyCodec,
vc: valueCodec,
sk: sk,
prefix: prefix.Bytes(),
}
}
// Map represents the basic collections object.
// It is used to map arbitrary keys to arbitrary
// objects.
type Map[K, V any] struct {
kc KeyCodec[K]
vc ValueCodec[V]
sk storetypes.StoreKey
prefix []byte
}
// Set maps the provided value to the provided key in the store.
// Errors with ErrEncoding if key or value encoding fails.
func (m Map[K, V]) Set(ctx context.Context, key K, value V) error {
keyBytes, err := m.encodeKey(key)
if err != nil {
return err
}
valueBytes, err := m.vc.Encode(value)
if err != nil {
return fmt.Errorf("%w: value encode: %s", ErrEncoding, err) // TODO: use multi err wrapping in go1.20: https://github.com/golang/go/issues/53435
}
store, err := m.getStore(ctx)
if err != nil {
return err
}
store.Set(keyBytes, valueBytes)
return nil
}
// Get returns the value associated with the provided key,
// errors with ErrNotFound if the key does not exist, or
// with ErrEncoding if the key or value decoding fails.
func (m Map[K, V]) Get(ctx context.Context, key K) (V, error) {
keyBytes, err := m.encodeKey(key)
if err != nil {
var v V
return v, err
}
store, err := m.getStore(ctx)
if err != nil {
var v V
return v, err
}
valueBytes := store.Get(keyBytes)
if valueBytes == nil {
var v V
return v, fmt.Errorf("%w: key '%s' of type %s", ErrNotFound, m.kc.Stringify(key), m.vc.ValueType())
}
v, err := m.vc.Decode(valueBytes)
if err != nil {
var v V
return v, fmt.Errorf("%w: value decode: %s", ErrEncoding, err) // TODO: use multi err wrapping in go1.20: https://github.com/golang/go/issues/53435
}
return v, nil
}
// Has reports whether the key is present in storage or not.
// Errors with ErrEncoding if key encoding fails.
func (m Map[K, V]) Has(ctx context.Context, key K) (bool, error) {
bytesKey, err := m.encodeKey(key)
if err != nil {
return false, err
}
store, err := m.getStore(ctx)
if err != nil {
return false, err
}
return store.Has(bytesKey), nil
}
// Remove removes the key from the storage.
// Errors with ErrEncoding if key encoding fails.
// If the key does not exist then this is a no-op.
func (m Map[K, V]) Remove(ctx context.Context, key K) error {
bytesKey, err := m.encodeKey(key)
if err != nil {
return err
}
store, err := m.getStore(ctx)
if err != nil {
return err
}
store.Delete(bytesKey)
return nil
}
func (m Map[K, V]) getStore(ctx context.Context) (storetypes.KVStore, error) {
provider, ok := ctx.(StorageProvider)
if !ok {
return nil, fmt.Errorf("context is not a StorageProvider: underlying type %T", ctx)
}
return provider.KVStore(m.sk), nil
}
func (m Map[K, V]) encodeKey(key K) ([]byte, error) {
prefixLen := len(m.prefix)
// preallocate buffer
keyBytes := make([]byte, prefixLen+m.kc.Size(key))
// put prefix
copy(keyBytes, m.prefix)
// put key
_, err := m.kc.Encode(keyBytes[prefixLen:], key)
if err != nil {
return nil, fmt.Errorf("%w: key encode: %s", ErrEncoding, err) // TODO: use multi err wrapping in go1.20: https://github.com/golang/go/issues/53435
}
return keyBytes, nil
}

48
collections/map_test.go Normal file
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@ -0,0 +1,48 @@
package collections
import (
"testing"
storetypes "github.com/cosmos/cosmos-sdk/store/types"
"github.com/stretchr/testify/require"
)
func TestMap(t *testing.T) {
sk, ctx := deps()
m := NewMap(sk, NewPrefix("hi"), Uint64Key, Uint64Value)
// test not has
has, err := m.Has(ctx, 1)
require.NoError(t, err)
require.False(t, has)
// test get error
_, err = m.Get(ctx, 1)
require.ErrorIs(t, err, ErrNotFound)
// test set/get
err = m.Set(ctx, 1, 100)
require.NoError(t, err)
v, err := m.Get(ctx, 1)
require.NoError(t, err)
require.Equal(t, uint64(100), v)
// test remove
err = m.Remove(ctx, 1)
require.NoError(t, err)
has, err = m.Has(ctx, 1)
require.NoError(t, err)
require.False(t, has)
}
func TestMap_encodeKey(t *testing.T) {
prefix := "prefix"
number := []byte{0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}
expectedKey := append([]byte(prefix), number...)
m := NewMap(storetypes.NewKVStoreKey("test"), NewPrefix(prefix), Uint64Key, Uint64Value)
gotKey, err := m.encodeKey(0)
require.NoError(t, err)
require.Equal(t, expectedKey, gotKey)
}

29
collections/values.go Normal file
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@ -0,0 +1,29 @@
package collections
import (
"encoding/binary"
"fmt"
)
var Uint64Value ValueCodec[uint64] = uint64Value{}
type uint64Value struct{}
func (u uint64Value) Encode(value uint64) ([]byte, error) {
return binary.BigEndian.AppendUint64(make([]byte, 0, 8), value), nil
}
func (u uint64Value) Decode(b []byte) (uint64, error) {
if len(b) != 8 {
return 0, fmt.Errorf("%w: uint64 value size invalid, want: 8, got: %d", ErrEncoding, len(b))
}
return binary.BigEndian.Uint64(b), nil
}
func (u uint64Value) Stringify(value uint64) string {
return Uint64Key.Stringify(value)
}
func (u uint64Value) ValueType() string {
return Uint64Key.KeyType()
}

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@ -0,0 +1,18 @@
package collections
import (
"testing"
"github.com/stretchr/testify/require"
)
func TestUint64Value(t *testing.T) {
t.Run("bijective", func(t *testing.T) {
checkValueCodec(t, Uint64Value, 555)
})
t.Run("invalid size", func(t *testing.T) {
_, err := Uint64Value.Decode([]byte{0x1, 0x2})
require.ErrorIs(t, err, ErrEncoding)
})
}

View File

@ -4,6 +4,7 @@ use (
.
./api
./client/v2
./collections
./core
./depinject
./errors