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process_stop.go
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process_stop.go
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/*
* Copyright 1999-2020 Alibaba Group Holding Ltd.
*
* 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.
*/
package process
import (
"context"
"fmt"
"github.com/chaosblade-io/chaosblade-exec-os/exec/category"
"github.com/chaosblade-io/chaosblade-spec-go/spec"
)
const StopProcessBin = "chaos_stopprocess"
type StopProcessActionCommandSpec struct {
spec.BaseExpActionCommandSpec
}
func NewStopProcessActionCommandSpec() spec.ExpActionCommandSpec {
return &StopProcessActionCommandSpec{
spec.BaseExpActionCommandSpec{
ActionMatchers: []spec.ExpFlagSpec{
&spec.ExpFlag{
Name: "process",
Desc: "Process name",
},
&spec.ExpFlag{
Name: "process-cmd",
Desc: "Process name in command",
},
&spec.ExpFlag{
Name: "count",
Desc: "Limit count, 0 means unlimited",
},
&spec.ExpFlag{
Name: "local-port",
Desc: "Local service ports. Separate multiple ports with commas (,) or connector representing ranges, for example: 80,8000-8080",
},
&spec.ExpFlag{
Name: "signal",
Desc: "Killing process signal, such as 9,15",
},
&spec.ExpFlag{
Name: "exclude-process",
Desc: "Exclude process",
},
&spec.ExpFlag{
Name: "pid",
Desc: "pid",
},
},
ActionFlags: []spec.ExpFlagSpec{},
ActionExecutor: &StopProcessExecutor{},
ActionExample: `
# Pause the process that contains the "SimpleHTTPServer" keyword
blade create process stop --process SimpleHTTPServer
# Pause the Java process
blade create process stop --process-cmd java
# Return success even if the process not found
blade create process stop --process demo --ignore-not-found`,
ActionPrograms: []string{StopProcessBin},
ActionCategories: []string{category.SystemProcess},
},
}
}
func (*StopProcessActionCommandSpec) Name() string {
return "stop"
}
func (*StopProcessActionCommandSpec) Aliases() []string {
return []string{"f"}
}
func (*StopProcessActionCommandSpec) ShortDesc() string {
return "process fake death"
}
func (s *StopProcessActionCommandSpec) LongDesc() string {
if s.ActionLongDesc != "" {
return s.ActionLongDesc
}
return "process fake death by process id or process name"
}
type StopProcessExecutor struct {
channel spec.Channel
}
func (spe *StopProcessExecutor) Name() string {
return "stop"
}
func (spe *StopProcessExecutor) Exec(uid string, ctx context.Context, model *spec.ExpModel) *spec.Response {
resp := getPids(ctx, spe.channel, model, uid)
if !resp.Success {
return resp
}
pids := resp.Result.(string)
if _, ok := spec.IsDestroy(ctx); ok {
return spe.channel.Run(ctx, "kill", fmt.Sprintf("-CONT %s", pids))
} else {
return spe.channel.Run(ctx, "kill", fmt.Sprintf("-STOP %s", pids))
}
}
func (spe *StopProcessExecutor) SetChannel(channel spec.Channel) {
spe.channel = channel
}