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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 executor
import (
"context"
"fmt"
"reflect"
"time"
"github.com/pingcap/tiup/pkg/checkpoint"
"github.com/pingcap/tiup/pkg/cluster/ctxt"
"go.uber.org/zap"
)
var (
// register checkpoint for ssh command
sshPoint = checkpoint.Register(
checkpoint.Field("host", reflect.DeepEqual),
checkpoint.Field("port", func(a, b any) bool {
return fmt.Sprintf("%v", a) == fmt.Sprintf("%v", b)
}),
checkpoint.Field("user", reflect.DeepEqual),
checkpoint.Field("sudo", reflect.DeepEqual),
checkpoint.Field("cmd", reflect.DeepEqual),
)
// register checkpoint for scp command
scpPoint = checkpoint.Register(
checkpoint.Field("host", reflect.DeepEqual),
checkpoint.Field("port", func(a, b any) bool {
return fmt.Sprintf("%v", a) == fmt.Sprintf("%v", b)
}),
checkpoint.Field("user", reflect.DeepEqual),
checkpoint.Field("src", reflect.DeepEqual),
checkpoint.Field("dst", reflect.DeepEqual),
checkpoint.Field("download", reflect.DeepEqual),
)
)
// CheckPointExecutor wraps Executor and inject checkpoints
//
// ATTENTION please: the result of CheckPointExecutor shouldn't be used to impact
// external system like PD, otherwise, the external system may
// take wrong action.
type CheckPointExecutor struct {
ctxt.Executor
config *SSHConfig
}
// Execute implements Executor interface.
func (c *CheckPointExecutor) Execute(ctx context.Context, cmd string, sudo bool, timeout ...time.Duration) (stdout []byte, stderr []byte, err error) {
point := checkpoint.Acquire(ctx, sshPoint, map[string]any{
"host": c.config.Host,
"port": c.config.Port,
"user": c.config.User,
"sudo": sudo,
"cmd": cmd,
})
defer func() {
point.Release(err,
zap.String("host", c.config.Host),
zap.Int("port", c.config.Port),
zap.String("user", c.config.User),
zap.Bool("sudo", sudo),
zap.String("cmd", cmd),
zap.String("stdout", string(stdout)),
zap.String("stderr", string(stderr)),
)
}()
if point.Hit() != nil {
return []byte(point.Hit()["stdout"].(string)), []byte(point.Hit()["stderr"].(string)), nil
}
return c.Executor.Execute(ctx, cmd, sudo, timeout...)
}
// Transfer implements Executer interface.
func (c *CheckPointExecutor) Transfer(ctx context.Context, src, dst string, download bool, limit int, compress bool) (err error) {
point := checkpoint.Acquire(ctx, scpPoint, map[string]any{
"host": c.config.Host,
"port": c.config.Port,
"user": c.config.User,
"src": src,
"dst": dst,
"download": download,
"limit": limit,
"compress": compress,
})
defer func() {
point.Release(err,
zap.String("host", c.config.Host),
zap.Int("port", c.config.Port),
zap.String("user", c.config.User),
zap.String("src", src),
zap.String("dst", dst),
zap.Bool("download", download))
}()
if point.Hit() != nil {
return nil
}
return c.Executor.Transfer(ctx, src, dst, download, limit, compress)
}
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