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// Copyright 2020 PingCAP, Inc.
//
// 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,
// See the License for the specific language governing permissions and
// limitations under the License.
package instance
import (
"context"
"fmt"
"path/filepath"
"strings"
"github.com/pingcap/errors"
"github.com/pingcap/tiup/pkg/tidbver"
"github.com/pingcap/tiup/pkg/utils"
)
// PDRole is the role of PD.
type PDRole string
const (
// PDRoleNormal is the default role of PD
PDRoleNormal PDRole = "pd"
// PDRoleAPI is the role of PD API
PDRoleAPI PDRole = "api"
// PDRoleTSO is the role of PD TSO
PDRoleTSO PDRole = "tso"
// PDRoleScheduling is the role of PD scheduling
PDRoleScheduling PDRole = "scheduling"
)
// PDInstance represent a running pd-server
type PDInstance struct {
instance
shOpt SharedOptions
role PDRole
initEndpoints []*PDInstance
joinEndpoints []*PDInstance
pds []*PDInstance
Process
kvIsSingleReplica bool
}
// NewPDInstance return a PDInstance
func NewPDInstance(role PDRole, shOpt SharedOptions, binPath, dir, host, configPath string, id int, pds []*PDInstance, port int, kvIsSingleReplica bool) *PDInstance {
if port <= 0 {
port = 2379
}
return &PDInstance{
shOpt: shOpt,
instance: instance{
BinPath: binPath,
ID: id,
Dir: dir,
Host: host,
Port: utils.MustGetFreePort(host, 2380, shOpt.PortOffset),
StatusPort: utils.MustGetFreePort(host, port, shOpt.PortOffset),
ConfigPath: configPath,
},
role: role,
pds: pds,
kvIsSingleReplica: kvIsSingleReplica,
}
}
// Join set endpoints field of PDInstance
func (inst *PDInstance) Join(pds []*PDInstance) *PDInstance {
inst.joinEndpoints = pds
return inst
}
// InitCluster set the init cluster instance.
func (inst *PDInstance) InitCluster(pds []*PDInstance) *PDInstance {
inst.initEndpoints = pds
return inst
}
// Name return the name of pd.
func (inst *PDInstance) Name() string {
switch inst.role {
case PDRoleTSO:
return fmt.Sprintf("tso-%d", inst.ID)
case PDRoleScheduling:
return fmt.Sprintf("scheduling-%d", inst.ID)
default:
return fmt.Sprintf("pd-%d", inst.ID)
}
}
// Start calls set inst.cmd and Start
func (inst *PDInstance) Start(ctx context.Context) error {
configPath := filepath.Join(inst.Dir, "pd.toml")
if err := prepareConfig(
configPath,
inst.ConfigPath,
inst.getConfig(),
); err != nil {
return err
}
uid := inst.Name()
var args []string
switch inst.role {
case PDRoleNormal, PDRoleAPI:
if inst.role == PDRoleAPI {
args = []string{"services", "api"}
}
args = append(args, []string{
"--name=" + uid,
fmt.Sprintf("--config=%s", configPath),
fmt.Sprintf("--data-dir=%s", filepath.Join(inst.Dir, "data")),
fmt.Sprintf("--peer-urls=http://%s", utils.JoinHostPort(inst.Host, inst.Port)),
fmt.Sprintf("--advertise-peer-urls=http://%s", utils.JoinHostPort(AdvertiseHost(inst.Host), inst.Port)),
fmt.Sprintf("--client-urls=http://%s", utils.JoinHostPort(inst.Host, inst.StatusPort)),
fmt.Sprintf("--advertise-client-urls=http://%s", utils.JoinHostPort(AdvertiseHost(inst.Host), inst.StatusPort)),
fmt.Sprintf("--log-file=%s", inst.LogFile()),
}...)
switch {
case len(inst.initEndpoints) > 0:
endpoints := make([]string, 0)
for _, pd := range inst.initEndpoints {
uid := fmt.Sprintf("pd-%d", pd.ID)
endpoints = append(endpoints, fmt.Sprintf("%s=http://%s", uid, utils.JoinHostPort(AdvertiseHost(inst.Host), pd.Port)))
}
args = append(args, fmt.Sprintf("--initial-cluster=%s", strings.Join(endpoints, ",")))
case len(inst.joinEndpoints) > 0:
endpoints := make([]string, 0)
for _, pd := range inst.joinEndpoints {
endpoints = append(endpoints, fmt.Sprintf("http://%s", utils.JoinHostPort(AdvertiseHost(inst.Host), pd.Port)))
}
args = append(args, fmt.Sprintf("--join=%s", strings.Join(endpoints, ",")))
default:
return errors.Errorf("must set the init or join instances")
}
case PDRoleTSO:
endpoints := pdEndpoints(inst.pds, true)
args = []string{
"services",
"tso",
fmt.Sprintf("--listen-addr=http://%s", utils.JoinHostPort(inst.Host, inst.StatusPort)),
fmt.Sprintf("--advertise-listen-addr=http://%s", utils.JoinHostPort(AdvertiseHost(inst.Host), inst.StatusPort)),
fmt.Sprintf("--backend-endpoints=%s", strings.Join(endpoints, ",")),
fmt.Sprintf("--log-file=%s", inst.LogFile()),
fmt.Sprintf("--config=%s", configPath),
}
if tidbver.PDSupportMicroservicesWithName(inst.Version.String()) {
args = append(args, fmt.Sprintf("--name=%s", uid))
}
case PDRoleScheduling:
endpoints := pdEndpoints(inst.pds, true)
args = []string{
"services",
"scheduling",
fmt.Sprintf("--listen-addr=http://%s", utils.JoinHostPort(inst.Host, inst.StatusPort)),
fmt.Sprintf("--advertise-listen-addr=http://%s", utils.JoinHostPort(AdvertiseHost(inst.Host), inst.StatusPort)),
fmt.Sprintf("--backend-endpoints=%s", strings.Join(endpoints, ",")),
fmt.Sprintf("--log-file=%s", inst.LogFile()),
fmt.Sprintf("--config=%s", configPath),
}
if tidbver.PDSupportMicroservicesWithName(inst.Version.String()) {
args = append(args, fmt.Sprintf("--name=%s", uid))
}
}
inst.Process = &process{cmd: PrepareCommand(ctx, inst.BinPath, args, nil, inst.Dir)}
logIfErr(inst.Process.SetOutputFile(inst.LogFile()))
return inst.Process.Start()
}
// Component return the component name.
func (inst *PDInstance) Component() string {
if inst.role == PDRoleNormal || inst.role == PDRoleAPI {
return "pd"
}
return string(inst.role)
}
// LogFile return the log file.
func (inst *PDInstance) LogFile() string {
if inst.role == PDRoleNormal || inst.role == PDRoleAPI {
return filepath.Join(inst.Dir, "pd.log")
}
return filepath.Join(inst.Dir, fmt.Sprintf("%s.log", string(inst.role)))
}
// Addr return the listen address of PD
func (inst *PDInstance) Addr() string {
return utils.JoinHostPort(AdvertiseHost(inst.Host), inst.StatusPort)
}
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