package collectors import ( "encoding/json" "errors" "io/ioutil" "log" "os/exec" "strings" "time" lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric" influx "github.com/influxdata/line-protocol" ) const CUSTOMCMDPATH = `/home/unrz139/Work/cc-metric-collector/collectors/custom` type CustomCmdCollectorConfig struct { Commands []string `json:"commands"` Files []string `json:"files"` ExcludeMetrics []string `json:"exclude_metrics"` } type CustomCmdCollector struct { metricCollector handler *influx.MetricHandler parser *influx.Parser config CustomCmdCollectorConfig commands []string files []string } func (m *CustomCmdCollector) Init(config json.RawMessage) error { var err error m.name = "CustomCmdCollector" m.parallel = true m.meta = map[string]string{"source": m.name, "group": "Custom"} if len(config) > 0 { err = json.Unmarshal(config, &m.config) if err != nil { log.Print(err.Error()) return err } } m.setup() for _, c := range m.config.Commands { cmdfields := strings.Fields(c) command := exec.Command(cmdfields[0], strings.Join(cmdfields[1:], " ")) command.Wait() _, err = command.Output() if err != nil { m.commands = append(m.commands, c) } } for _, f := range m.config.Files { _, err = ioutil.ReadFile(f) if err == nil { m.files = append(m.files, f) } else { log.Print(err.Error()) continue } } if len(m.files) == 0 && len(m.commands) == 0 { return errors.New("no metrics to collect") } m.handler = influx.NewMetricHandler() m.parser = influx.NewParser(m.handler) m.parser.SetTimeFunc(DefaultTime) m.init = true return nil } var DefaultTime = func() time.Time { return time.Unix(42, 0) } func (m *CustomCmdCollector) Read(interval time.Duration, output chan lp.CCMetric) { if !m.init { return } for _, cmd := range m.commands { cmdfields := strings.Fields(cmd) command := exec.Command(cmdfields[0], strings.Join(cmdfields[1:], " ")) command.Wait() stdout, err := command.Output() if err != nil { log.Print(err) continue } cmdmetrics, err := m.parser.Parse(stdout) if err != nil { log.Print(err) continue } for _, c := range cmdmetrics { _, skip := stringArrayContains(m.config.ExcludeMetrics, c.Name()) if skip { continue } y := lp.FromInfluxMetric(c) if err == nil { output <- y } } } for _, file := range m.files { buffer, err := ioutil.ReadFile(file) if err != nil { log.Print(err) return } fmetrics, err := m.parser.Parse(buffer) if err != nil { log.Print(err) continue } for _, f := range fmetrics { _, skip := stringArrayContains(m.config.ExcludeMetrics, f.Name()) if skip { continue } y := lp.FromInfluxMetric(f) if err == nil { output <- y } } } } func (m *CustomCmdCollector) Close() { m.init = false }