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test_utils.go
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test_utils.go
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//
// (C) Copyright 2019 Intel Corporation.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// GOVERNMENT LICENSE RIGHTS-OPEN SOURCE SOFTWARE
// The Government's rights to use, modify, reproduce, release, perform, display,
// or disclose this software are subject to the terms of the Apache License as
// provided in Contract No. 8F-30005.
// Any reproduction of computer software, computer software documentation, or
// portions thereof marked with this legend must also reproduce the markings.
//
package server
import (
"context"
"sync"
"time"
"github.com/golang/protobuf/proto"
"github.com/daos-stack/daos/src/control/drpc"
"github.com/daos-stack/daos/src/control/logging"
"github.com/daos-stack/daos/src/control/server/ioserver"
)
// Utilities for internal server package tests
// mockDrpcClientConfig is a configuration structure for mockDrpcClient
type mockDrpcClientConfig struct {
IsConnectedBool bool
ConnectError error
CloseError error
SendMsgResponse *drpc.Response
SendMsgError error
ResponseDelay time.Duration
}
func (cfg *mockDrpcClientConfig) setSendMsgResponse(status drpc.Status, body []byte, err error) {
cfg.SendMsgResponse = &drpc.Response{
Status: status,
Body: body,
}
cfg.SendMsgError = err
}
func (cfg *mockDrpcClientConfig) setResponseDelay(duration time.Duration) {
cfg.ResponseDelay = duration
}
// mockDrpcClient is a mock of the DomainSocketClient interface
type mockDrpcClient struct {
sync.Mutex
cfg mockDrpcClientConfig
CloseCallCount int
SendMsgInputCall *drpc.Call
}
func (c *mockDrpcClient) IsConnected() bool {
return c.cfg.IsConnectedBool
}
func (c *mockDrpcClient) Connect() error {
return c.cfg.ConnectError
}
func (c *mockDrpcClient) Close() error {
c.CloseCallCount++
return c.cfg.CloseError
}
func (c *mockDrpcClient) SendMsg(call *drpc.Call) (*drpc.Response, error) {
c.SendMsgInputCall = call
<-time.After(c.cfg.ResponseDelay)
return c.cfg.SendMsgResponse, c.cfg.SendMsgError
}
func newMockDrpcClient(cfg *mockDrpcClientConfig) *mockDrpcClient {
if cfg == nil {
cfg = &mockDrpcClientConfig{}
}
return &mockDrpcClient{cfg: *cfg}
}
// setupMockDrpcClientBytes sets up the dRPC client for the mgmtSvc to return
// a set of bytes as a response.
func setupMockDrpcClientBytes(svc *mgmtSvc, respBytes []byte, err error) {
mi, _ := svc.harness.GetMSLeaderInstance()
cfg := &mockDrpcClientConfig{}
cfg.setSendMsgResponse(drpc.Status_SUCCESS, respBytes, err)
mi.setDrpcClient(newMockDrpcClient(cfg))
}
// setupMockDrpcClient sets up the dRPC client for the mgmtSvc to return
// a valid protobuf message as a response.
func setupMockDrpcClient(svc *mgmtSvc, resp proto.Message, err error) {
respBytes, _ := proto.Marshal(resp)
setupMockDrpcClientBytes(svc, respBytes, err)
}
// newTestIOServer returns an IOServerInstance configured for testing.
func newTestIOServer(log logging.Logger, isAP bool) *IOServerInstance {
r := ioserver.NewTestRunner(nil, ioserver.NewConfig())
var msCfg mgmtSvcClientCfg
if isAP {
msCfg.AccessPoints = append(msCfg.AccessPoints, "localhost")
}
srv := NewIOServerInstance(log, nil, nil, newMgmtSvcClient(context.TODO(), log, msCfg), r)
srv.setSuperblock(&Superblock{
MS: isAP,
})
return srv
}
// newTestMgmtSvc creates a mgmtSvc that contains an IOServerInstance
// properly set up as an MS.
func newTestMgmtSvc(log logging.Logger) *mgmtSvc {
srv := newTestIOServer(log, true)
harness := NewIOServerHarness(log)
if err := harness.AddInstance(srv); err != nil {
panic(err)
}
return newMgmtSvc(harness, nil)
}
// newTestMgmtSvcMulti creates a mgmtSvc that contains the requested
// number of IOServerInstances. If requested, the first instance is
// configured as an access point.
func newTestMgmtSvcMulti(log logging.Logger, count int, isAP bool) *mgmtSvc {
harness := NewIOServerHarness(log)
for i := 0; i < count; i++ {
srv := newTestIOServer(log, i == 0 && isAP)
if err := harness.AddInstance(srv); err != nil {
panic(err)
}
}
return newMgmtSvc(harness, nil)
}