frostfs-sdk-go/client/object_search_test.go

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package client
import (
"crypto/ecdsa"
"errors"
"fmt"
"io"
"testing"
v2object "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object"
"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs"
signatureV2 "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/signature"
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
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"
)
func TestObjectSearch(t *testing.T) {
ids := make([]oid.ID, 20)
for i := range ids {
ids[i] = oidtest.ID()
}
p, resp := testListReaderResponse(t)
buf := make([]oid.ID, 2)
checkRead := func(t *testing.T, expected []oid.ID) {
n, ok := resp.Read(buf)
require.True(t, ok == (len(expected) == len(buf)), "expected no error")
require.Equal(t, len(expected), n, "expected %d items to be read", len(expected))
require.Equal(t, expected, buf[:len(expected)])
}
// nil panic
require.Panics(t, func() { resp.Read(nil) })
// both ID fetched
resp.stream = newSearchStream(p, nil, ids[:3])
checkRead(t, ids[:2])
// one ID cached, second fetched
resp.stream = newSearchStream(p, nil, ids[3:6])
checkRead(t, ids[2:4])
// both ID cached
resp.stream = nil // shouldn't be called, panic if so
checkRead(t, ids[4:6])
// both ID fetched in 2 requests, with empty one in the middle
resp.stream = newSearchStream(p, nil, ids[6:7], nil, ids[7:8])
checkRead(t, ids[6:8])
// read from tail multiple times
resp.stream = newSearchStream(p, nil, ids[8:11])
buf = buf[:1]
checkRead(t, ids[8:9])
checkRead(t, ids[9:10])
checkRead(t, ids[10:11])
// handle EOF
buf = buf[:2]
resp.stream = newSearchStream(p, io.EOF, ids[11:12])
checkRead(t, ids[11:12])
}
func TestObjectIterate(t *testing.T) {
ids := make([]oid.ID, 3)
for i := range ids {
ids[i] = oidtest.ID()
}
t.Run("iterate all sequence", func(t *testing.T) {
p, resp := testListReaderResponse(t)
resp.stream = newSearchStream(p, io.EOF, ids[0:2], nil, ids[2:3])
var actual []oid.ID
require.NoError(t, resp.Iterate(func(id oid.ID) bool {
actual = append(actual, id)
return false
}))
require.Equal(t, ids[:3], actual)
})
t.Run("stop by return value", func(t *testing.T) {
p, resp := testListReaderResponse(t)
var actual []oid.ID
resp.stream = &singleStreamResponder{key: p, idList: [][]oid.ID{ids}}
require.NoError(t, resp.Iterate(func(id oid.ID) bool {
actual = append(actual, id)
return len(actual) == 2
}))
require.Equal(t, ids[:2], actual)
})
t.Run("stop after error", func(t *testing.T) {
p, resp := testListReaderResponse(t)
expectedErr := errors.New("test error")
resp.stream = newSearchStream(p, expectedErr, ids[:2])
var actual []oid.ID
err := resp.Iterate(func(id oid.ID) bool {
actual = append(actual, id)
return false
})
require.True(t, errors.Is(err, expectedErr), "got: %v", err)
require.Equal(t, ids[:2], actual)
})
}
func testListReaderResponse(t *testing.T) (*ecdsa.PrivateKey, *ObjectListReader) {
p, err := keys.NewPrivateKey()
require.NoError(t, err)
return &p.PrivateKey, &ObjectListReader{
cancelCtxStream: func() {},
client: &Client{},
tail: nil,
}
}
func newSearchStream(key *ecdsa.PrivateKey, endError error, idList ...[]oid.ID) *singleStreamResponder {
return &singleStreamResponder{
key: key,
endError: endError,
idList: idList,
}
}
type singleStreamResponder struct {
key *ecdsa.PrivateKey
n int
endError error
idList [][]oid.ID
}
func (s *singleStreamResponder) Read(resp *v2object.SearchResponse) error {
if s.n >= len(s.idList) {
if s.endError != nil {
return s.endError
}
panic("unexpected call to `Read`")
}
var body v2object.SearchResponseBody
if s.idList[s.n] != nil {
ids := make([]refs.ObjectID, len(s.idList[s.n]))
for i := range s.idList[s.n] {
s.idList[s.n][i].WriteToV2(&ids[i])
}
body.SetIDList(ids)
}
resp.SetBody(&body)
err := signatureV2.SignServiceMessage(s.key, resp)
if err != nil {
panic(fmt.Errorf("error: %w", err))
}
s.n++
return nil
}