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package hello
import (
"context"
"strconv"
"sync"
"time"
"github.com/hashicorp/go-hclog"
"github.com/hashicorp/go-plugin"
"github.com/hashicorp/nomad/drivers/shared/executor"
"github.com/hashicorp/nomad/plugins/drivers"
)
// taskHandle should store all relevant runtime information
// such as process ID if this is a local task or other meta
// data if this driver deals with external APIs
type taskHandle struct {
// stateLock syncs access to all fields below
stateLock sync.RWMutex
logger hclog.Logger
exec executor.Executor
pluginClient *plugin.Client
taskConfig *drivers.TaskConfig
procState drivers.TaskState
startedAt time.Time
completedAt time.Time
exitResult *drivers.ExitResult
// TODO: add any extra relevant information about the task.
pid int
}
func (h *taskHandle) TaskStatus() *drivers.TaskStatus {
h.stateLock.RLock()
defer h.stateLock.RUnlock()
return &drivers.TaskStatus{
ID: h.taskConfig.ID,
Name: h.taskConfig.Name,
State: h.procState,
StartedAt: h.startedAt,
CompletedAt: h.completedAt,
ExitResult: h.exitResult,
DriverAttributes: map[string]string{
"pid": strconv.Itoa(h.pid),
},
}
}
func (h *taskHandle) IsRunning() bool {
h.stateLock.RLock()
defer h.stateLock.RUnlock()
return h.procState == drivers.TaskStateRunning
}
func (h *taskHandle) run() {
h.stateLock.Lock()
if h.exitResult == nil {
h.exitResult = &drivers.ExitResult{}
}
h.stateLock.Unlock()
// TODO: wait for your task to complete and upate its state.
ps, err := h.exec.Wait(context.Background())
h.stateLock.Lock()
defer h.stateLock.Unlock()
if err != nil {
h.exitResult.Err = err
h.procState = drivers.TaskStateUnknown
h.completedAt = time.Now()
return
}
h.procState = drivers.TaskStateExited
h.exitResult.ExitCode = ps.ExitCode
h.exitResult.Signal = ps.Signal
h.completedAt = ps.Time
}
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