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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 manager
import (
"context"
"github.com/fatih/color"
"github.com/joomcode/errorx"
perrs "github.com/pingcap/errors"
"github.com/pingcap/tiup/pkg/cluster/clusterutil"
"github.com/pingcap/tiup/pkg/cluster/ctxt"
operator "github.com/pingcap/tiup/pkg/cluster/operation"
"github.com/pingcap/tiup/pkg/cluster/spec"
"github.com/pingcap/tiup/pkg/cluster/task"
"github.com/pingcap/tiup/pkg/set"
"github.com/pingcap/tiup/pkg/utils"
)
// ExecOptions for exec shell commanm.
type ExecOptions struct {
Command string
Sudo bool
}
// Exec shell command on host in the tidb cluster.
func (m *Manager) Exec(name string, opt ExecOptions, gOpt operator.Options) error {
if err := clusterutil.ValidateClusterNameOrError(name); err != nil {
return err
}
metadata, err := m.meta(name)
if err != nil {
return err
}
topo := metadata.GetTopology()
base := metadata.GetBaseMeta()
filterRoles := set.NewStringSet(gOpt.Roles...)
filterNodes := set.NewStringSet(gOpt.Nodes...)
var shellTasks []task.Task
uniqueHosts := map[string]set.StringSet{} // host-sshPort -> {command}
topo.IterInstance(func(inst spec.Instance) {
key := utils.JoinHostPort(inst.GetManageHost(), inst.GetSSHPort())
if _, found := uniqueHosts[key]; !found {
if len(gOpt.Roles) > 0 && !filterRoles.Exist(inst.Role()) {
return
}
if len(gOpt.Nodes) > 0 && (!filterNodes.Exist(inst.GetHost()) && !filterNodes.Exist(inst.GetManageHost())) {
return
}
cmds, err := renderInstanceSpec(opt.Command, inst)
if err != nil {
m.logger.Debugf("error rendering command with spec: %s", err)
return // skip
}
cmdSet := set.NewStringSet(cmds...)
if _, ok := uniqueHosts[key]; ok {
uniqueHosts[key].Join(cmdSet)
return
}
uniqueHosts[key] = cmdSet
}
})
for hostKey, i := range uniqueHosts {
host, _ := utils.ParseHostPort(hostKey)
for _, cmd := range i.Slice() {
shellTasks = append(shellTasks,
task.NewBuilder(m.logger).
Shell(host, cmd, hostKey+cmd, opt.Sudo).
Build())
}
}
b, err := m.sshTaskBuilder(name, topo, base.User, gOpt)
if err != nil {
return err
}
t := b.
Parallel(false, shellTasks...).
Build()
execCtx := ctxt.New(
context.Background(),
gOpt.Concurrency,
m.logger,
)
if err := t.Execute(execCtx); err != nil {
if errorx.Cast(err) != nil {
// FIXME: Map possible task errors and give suggestions.
return err
}
return perrs.Trace(err)
}
// print outputs
for hostKey, i := range uniqueHosts {
host, _ := utils.ParseHostPort(hostKey)
for _, cmd := range i.Slice() {
stdout, stderr, ok := ctxt.GetInner(execCtx).GetOutputs(hostKey + cmd)
if !ok {
continue
}
m.logger.Infof("Outputs of %s on %s:",
color.CyanString(cmd),
color.CyanString(host))
if len(stdout) > 0 {
m.logger.Infof("%s:\n%s", color.GreenString("stdout"), stdout)
}
if len(stderr) > 0 {
m.logger.Infof("%s:\n%s", color.RedString("stderr"), stderr)
}
}
}
return nil
}
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