open-nomad/command/operator_client_state.go
Dao Thanh Tung 09b25d71b8
cli: Add a nomad operator client state command (#15469)
Signed-off-by: dttung2905 <ttdao.2015@accountancy.smu.edu.sg>
2023-01-11 10:03:31 -05:00

130 lines
2.9 KiB
Go

package command
import (
"encoding/json"
"fmt"
"strings"
"github.com/hashicorp/go-hclog"
trstate "github.com/hashicorp/nomad/client/allocrunner/taskrunner/state"
"github.com/hashicorp/nomad/client/state"
"github.com/posener/complete"
)
type OperatorClientStateCommand struct {
Meta
}
func (c *OperatorClientStateCommand) Help() string {
helpText := `
Usage: nomad operator client-state <path_to_nomad_dir>
Emits a representation of the stored client state in JSON format.
`
return strings.TrimSpace(helpText)
}
func (c *OperatorClientStateCommand) AutocompleteFlags() complete.Flags {
return complete.Flags{}
}
func (c *OperatorClientStateCommand) AutocompleteArgs() complete.Predictor {
return complete.PredictNothing
}
func (c *OperatorClientStateCommand) Synopsis() string {
return "Dump the nomad client state"
}
func (c *OperatorClientStateCommand) Name() string { return "operator client-state" }
func (c *OperatorClientStateCommand) Run(args []string) int {
if len(args) != 1 {
c.Ui.Error("This command takes one argument: <nomad-data-dir>")
c.Ui.Error(commandErrorText(c))
return 1
}
logger := hclog.L()
db, err := state.NewBoltStateDB(logger, args[0])
if err != nil {
c.Ui.Error(fmt.Sprintf("failed to open client state: %v", err))
return 1
}
defer db.Close()
allocs, _, err := db.GetAllAllocations()
if err != nil {
c.Ui.Error(fmt.Sprintf("failed to get allocations: %v", err))
return 1
}
data := map[string]*clientStateAlloc{}
for _, alloc := range allocs {
allocID := alloc.ID
deployState, err := db.GetDeploymentStatus(allocID)
if err != nil {
c.Ui.Error(fmt.Sprintf("failed to get deployment status for %s: %v", allocID, err))
return 1
}
tasks := map[string]*taskState{}
tg := alloc.Job.LookupTaskGroup(alloc.TaskGroup)
for _, jt := range tg.Tasks {
ls, rs, err := db.GetTaskRunnerState(allocID, jt.Name)
if err != nil {
c.Ui.Error(fmt.Sprintf("failed to get task runner state %s: %v", allocID, err))
return 1
}
var ds interface{}
if ls.TaskHandle == nil {
continue
}
err = ls.TaskHandle.GetDriverState(&ds)
if err != nil {
c.Ui.Error(fmt.Sprintf("failed to parse driver state %s: %v", allocID, err))
return 1
}
tasks[jt.Name] = &taskState{
LocalState: ls,
RemoteState: rs,
DriverState: ds,
}
}
data[allocID] = &clientStateAlloc{
Alloc: alloc,
DeployStatus: deployState,
Tasks: tasks,
}
}
output := debugOutput{
Allocations: data,
}
bytes, err := json.Marshal(output)
if err != nil {
c.Ui.Error(fmt.Sprintf("failed to serialize client state: %v", err))
return 1
}
c.Ui.Output(string(bytes))
return 0
}
type debugOutput struct {
Allocations map[string]*clientStateAlloc
}
type clientStateAlloc struct {
Alloc any
DeployStatus any
Tasks map[string]*taskState
}
type taskState struct {
LocalState *trstate.LocalState
RemoteState any
DriverState interface{}
}