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package util
import (
"errors"
"github.com/shirou/gopsutil/process"
"github.com/spiral/roadrunner"
)
// State provides information about specific worker.
type State struct {
// Pid contains process id.
Pid int `json:"pid"`
// Status of the worker.
Status string `json:"status"`
// Number of worker executions.
NumJobs int64 `json:"numExecs"`
// Created is unix nano timestamp of worker creation time.
Created int64 `json:"created"`
// MemoryUsage holds the information about worker memory usage in bytes.
// Values might vary for different operating systems and based on RSS.
MemoryUsage uint64 `json:"memoryUsage"`
}
// WorkerState creates new worker state definition.
func WorkerState(w *roadrunner.Worker) (*State, error) {
p, _ := process.NewProcess(int32(*w.Pid))
i, err := p.MemoryInfo()
if err != nil {
return nil, err
}
return &State{
Pid: *w.Pid,
Status: w.State().String(),
NumJobs: w.State().NumExecs(),
Created: w.Created.UnixNano(),
MemoryUsage: i.RSS,
}, nil
}
// ServerState returns list of all worker states of a given rr server.
func ServerState(rr *roadrunner.Server) ([]*State, error) {
if rr == nil {
return nil, errors.New("rr server is not running")
}
result := make([]*State, 0)
for _, w := range rr.Workers() {
state, err := WorkerState(w)
if err != nil {
return nil, err
}
result = append(result, state)
}
return result, nil
}
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