frostfs-s3-gw/internal/frostfs/services/tree_client_grpc_test.go

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package services
import (
"context"
"errors"
"testing"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/layer"
grpcService "git.frostfs.info/TrueCloudLab/frostfs-s3-gw/internal/frostfs/services/tree"
"github.com/stretchr/testify/require"
"go.uber.org/zap/zaptest"
)
type treeClientMock struct {
address string
err bool
}
func (t *treeClientMock) TreeClient(context.Context) (grpcService.TreeServiceClient, error) {
if t.err {
return nil, errors.New("error")
}
return nil, nil
}
func (t *treeClientMock) Address() string {
return t.address
}
func TestHandleError(t *testing.T) {
defaultError := errors.New("default error")
for _, tc := range []struct {
err error
expectedError error
}{
{
err: defaultError,
expectedError: defaultError,
},
{
err: errors.New("something not found"),
expectedError: layer.ErrNodeNotFound,
},
{
err: errors.New("something is denied by some acl rule"),
expectedError: layer.ErrNodeAccessDenied,
},
} {
t.Run("", func(t *testing.T) {
err := handleError("err message", tc.err)
require.True(t, errors.Is(err, tc.expectedError))
})
}
}
func TestRetry(t *testing.T) {
ctx := context.Background()
log := zaptest.NewLogger(t)
cl := &ServiceClientGRPC{
log: zaptest.NewLogger(t),
clients: []TreeClient{
&treeClientMock{address: "node0"},
&treeClientMock{address: "node1"},
&treeClientMock{address: "node2"},
&treeClientMock{address: "node3"},
},
}
makeFn := func(client grpcService.TreeServiceClient) error {
return nil
}
t.Run("first ok", func(t *testing.T) {
err := cl.requestWithRetry(ctx, log, makeFn)
require.NoError(t, err)
require.Equal(t, 0, cl.getStartIndex())
resetClients(cl)
})
t.Run("first failed", func(t *testing.T) {
setErrors(cl.clients[:1])
err := cl.requestWithRetry(ctx, log, makeFn)
require.NoError(t, err)
require.Equal(t, 1, cl.getStartIndex())
resetClients(cl)
})
t.Run("all failed", func(t *testing.T) {
setErrors(cl.clients)
err := cl.requestWithRetry(ctx, log, makeFn)
require.Error(t, err)
require.Equal(t, 0, cl.getStartIndex())
resetClients(cl)
})
t.Run("round", func(t *testing.T) {
setErrors(cl.clients[:2])
err := cl.requestWithRetry(ctx, log, makeFn)
require.NoError(t, err)
require.Equal(t, 2, cl.getStartIndex())
resetClientsErrors(cl)
setErrors(cl.clients[2:])
err = cl.requestWithRetry(ctx, log, makeFn)
require.NoError(t, err)
require.Equal(t, 0, cl.getStartIndex())
resetClients(cl)
})
}
func resetClients(cl *ServiceClientGRPC) {
resetClientsErrors(cl)
cl.setStartIndex(0)
}
func resetClientsErrors(cl *ServiceClientGRPC) {
for _, client := range cl.clients {
node := client.(*treeClientMock)
node.err = false
}
}
func setErrors(clients []TreeClient) {
for _, client := range clients {
node := client.(*treeClientMock)
node.err = true
}
}