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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 module
import (
"context"
"fmt"
"github.com/pingcap/tiup/pkg/cluster/ctxt"
)
// ShellModuleConfig is the configurations used to initialize a TiUPModuleSystemd
type ShellModuleConfig struct {
Command string // the command to run
Sudo bool // whether use root privilege to run the command
Chdir string // change working directory before running the command
UseShell bool // whether use shell to invoke the command
}
// ShellModule is the module used to control systemd units
type ShellModule struct {
cmd string // the built command
sudo bool
}
// NewShellModule builds and returns a ShellModule object base on given config.
func NewShellModule(config ShellModuleConfig) *ShellModule {
cmd := config.Command
if config.Chdir != "" {
cmd = fmt.Sprintf("cd %s && %s",
config.Chdir, cmd)
}
if config.UseShell {
cmd = fmt.Sprintf("%s -c '%s'",
defaultShell, cmd)
}
return &ShellModule{
cmd: cmd,
sudo: config.Sudo,
}
}
// Execute passes the command to executor and returns its results, the executor
// should be already initialized.
func (mod *ShellModule) Execute(ctx context.Context, exec ctxt.Executor) ([]byte, []byte, error) {
return exec.Execute(ctx, mod.cmd, mod.sudo)
}
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