frostfs-sdk-go/object/erasurecode/split_test.go

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package erasurecode_test
import (
"testing"
objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/erasurecode"
oidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id/test"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/stretchr/testify/require"
)
// The library can behave differently for big shard counts.
// This test checks we support the maximum number of chunks we promise.
func TestSplitMaxShardCount(t *testing.T) {
pk, err := keys.NewPrivateKey()
require.NoError(t, err)
original := newObject(t, 1024, pk)
t.Run("only data", func(t *testing.T) {
c, err := erasurecode.NewConstructor(erasurecode.MaxShardCount, 0)
require.NoError(t, err)
parts, err := c.Split(original, &pk.PrivateKey)
require.NoError(t, err)
require.Len(t, parts, erasurecode.MaxShardCount)
for _, part := range parts {
require.NoError(t, objectSDK.CheckHeaderVerificationFields(part))
}
})
t.Run("data + parity", func(t *testing.T) {
c, err := erasurecode.NewConstructor(1, erasurecode.MaxShardCount-1)
require.NoError(t, err)
parts, err := c.Split(original, &pk.PrivateKey)
require.NoError(t, err)
require.Len(t, parts, erasurecode.MaxShardCount)
for _, part := range parts {
require.NoError(t, objectSDK.CheckHeaderVerificationFields(part))
}
})
t.Run("ec parents are children of last Split part", func(t *testing.T) {
c, err := erasurecode.NewConstructor(1, erasurecode.MaxShardCount-1)
require.NoError(t, err)
splitted1 := newObject(t, 1024, pk)
splitted2 := newObject(t, 1024, pk)
splittedId1, _ := splitted1.ID()
splittedId2, _ := splitted2.ID()
splitID := objectSDK.NewSplitID()
parent := objectSDK.New()
parent.SetID(oidtest.ID())
parent.SetChildren(splittedId1, splittedId2)
parent.SetSplitID(splitID)
splitted1.SetSplitID(splitID)
splitted1.SetParent(parent)
splitted2.SetSplitID(splitID)
splitted2.SetParent(parent)
parts1, err := c.Split(splitted1, &pk.PrivateKey)
require.NoError(t, err)
require.Len(t, parts1, erasurecode.MaxShardCount)
for _, part := range parts1 {
require.NoError(t, objectSDK.CheckHeaderVerificationFields(part))
require.NotNil(t, part.ECHeader().ParentSplitID())
require.Equal(t, *splitID, *part.ECHeader().ParentSplitID())
require.NotNil(t, part.ECHeader().ParentSplitParentID())
}
parts2, err := c.Split(splitted2, &pk.PrivateKey)
require.NoError(t, err)
require.Len(t, parts1, erasurecode.MaxShardCount)
for _, part := range parts2 {
require.NoError(t, objectSDK.CheckHeaderVerificationFields(part))
require.NotNil(t, part.ECHeader().ParentSplitID())
require.Equal(t, *splitID, *part.ECHeader().ParentSplitID())
require.NotNil(t, part.ECHeader().ParentSplitParentID())
}
})
t.Run("ec parents are children of non-last Split part", func(t *testing.T) {
c, err := erasurecode.NewConstructor(1, erasurecode.MaxShardCount-1)
require.NoError(t, err)
splitted1 := newObject(t, 1024, pk)
splitted2 := newObject(t, 1024, pk)
splittedId1, _ := splitted1.ID()
splittedId2, _ := splitted2.ID()
splitID := objectSDK.NewSplitID()
parent := objectSDK.New()
// Such parent has got no ID.
parent.SetChildren(splittedId1, splittedId2)
parent.SetSplitID(splitID)
splitted1.SetSplitID(splitID)
splitted1.SetParent(parent)
splitted2.SetSplitID(splitID)
splitted2.SetParent(parent)
parts1, err := c.Split(splitted1, &pk.PrivateKey)
require.NoError(t, err)
require.Len(t, parts1, erasurecode.MaxShardCount)
for _, part := range parts1 {
require.NoError(t, objectSDK.CheckHeaderVerificationFields(part))
require.NotNil(t, part.ECHeader().ParentSplitID())
require.Equal(t, *splitID, *part.ECHeader().ParentSplitID())
require.Nil(t, part.ECHeader().ParentSplitParentID())
}
parts2, err := c.Split(splitted2, &pk.PrivateKey)
require.NoError(t, err)
require.Len(t, parts1, erasurecode.MaxShardCount)
for _, part := range parts2 {
require.NoError(t, objectSDK.CheckHeaderVerificationFields(part))
require.NotNil(t, part.ECHeader().ParentSplitID())
require.Equal(t, *splitID, *part.ECHeader().ParentSplitID())
require.Nil(t, part.ECHeader().ParentSplitParentID())
}
})
}