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scrutiny/collector/cmd/collector-metrics/collector-metrics.go

197 lines
5.4 KiB

package main
import (
"fmt"
"github.com/analogj/scrutiny/collector/pkg/collector"
"github.com/analogj/scrutiny/collector/pkg/config"
"github.com/analogj/scrutiny/collector/pkg/errors"
"github.com/analogj/scrutiny/webapp/backend/pkg/version"
"github.com/sirupsen/logrus"
"io"
"log"
"os"
"strings"
"time"
utils "github.com/analogj/go-util/utils"
"github.com/fatih/color"
"github.com/urfave/cli/v2"
)
var goos string
var goarch string
func main() {
config, err := config.Create()
if err != nil {
fmt.Printf("FATAL: %+v\n", err)
os.Exit(1)
}
//we're going to load the config file manually, since we need to validate it.
err = config.ReadConfig("/opt/scrutiny/config/collector.yaml") // Find and read the config file
if _, ok := err.(errors.ConfigFileMissingError); ok { // Handle errors reading the config file
//ignore "could not find config file"
} else if err != nil {
os.Exit(1)
}
cli.CommandHelpTemplate = `NAME:
{{.HelpName}} - {{.Usage}}
USAGE:
{{if .UsageText}}{{.UsageText}}{{else}}{{.HelpName}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{end}}{{if .Category}}
CATEGORY:
{{.Category}}{{end}}{{if .Description}}
DESCRIPTION:
{{.Description}}{{end}}{{if .VisibleFlags}}
OPTIONS:
{{range .VisibleFlags}}{{.}}
{{end}}{{end}}
`
app := &cli.App{
Name: "scrutiny-collector-metrics",
Usage: "smartctl data collector for scrutiny",
Version: version.VERSION,
Compiled: time.Now(),
Authors: []*cli.Author{
{
Name: "Jason Kulatunga",
Email: "jason@thesparktree.com",
},
},
Before: func(c *cli.Context) error {
collectorMetrics := "AnalogJ/scrutiny/metrics"
var versionInfo string
if len(goos) > 0 && len(goarch) > 0 {
versionInfo = fmt.Sprintf("%s.%s-%s", goos, goarch, version.VERSION)
} else {
versionInfo = fmt.Sprintf("dev-%s", version.VERSION)
}
subtitle := collectorMetrics + utils.LeftPad2Len(versionInfo, " ", 65-len(collectorMetrics))
color.New(color.FgGreen).Fprintf(c.App.Writer, fmt.Sprintf(utils.StripIndent(
`
___ ___ ____ __ __ ____ ____ _ _ _ _
/ __) / __)( _ \( )( )(_ _)(_ _)( \( )( \/ )
\__ \( (__ ) / )(__)( )( _)(_ ) ( \ /
(___/ \___)(_)\_)(______) (__) (____)(_)\_) (__)
%s
`), subtitle))
return nil
},
Commands: []*cli.Command{
{
Name: "run",
Usage: "Run the scrutiny smartctl metrics collector",
Action: func(c *cli.Context) error {
if c.IsSet("config") {
err = config.ReadConfig(c.String("config")) // Find and read the config file
if err != nil { // Handle errors reading the config file
//ignore "could not find config file"
fmt.Printf("Could not find config file at specified path: %s", c.String("config"))
return err
}
}
//override config with flags if set
if c.IsSet("host-id") {
config.Set("host.id", c.String("host-id")) // set/override the host-id using CLI.
}
if c.Bool("debug") {
config.Set("log.level", "DEBUG")
}
if c.IsSet("log-file") {
config.Set("log.file", c.String("log-file"))
}
if c.IsSet("api-endpoint") {
//if the user is providing an api-endpoint with a basepath (eg. http://localhost:8080/scrutiny),
//we need to ensure the basepath has a trailing slash, otherwise the url.Parse() path concatenation doesnt work.
apiEndpoint := strings.TrimSuffix(c.String("api-endpoint"), "/") + "/"
config.Set("api.endpoint", apiEndpoint)
}
collectorLogger := logrus.WithFields(logrus.Fields{
"type": "metrics",
})
if level, err := logrus.ParseLevel(config.GetString("log.level")); err == nil {
logrus.SetLevel(level)
} else {
logrus.SetLevel(logrus.InfoLevel)
}
if config.IsSet("log.file") && len(config.GetString("log.file")) > 0 {
logFile, err := os.OpenFile(config.GetString("log.file"), os.O_CREATE|os.O_WRONLY, 0644)
if err != nil {
logrus.Errorf("Failed to open log file %s for output: %s", config.GetString("log.file"), err)
return err
}
defer logFile.Close()
logrus.SetOutput(io.MultiWriter(os.Stderr, logFile))
}
metricCollector, err := collector.CreateMetricsCollector(
config,
collectorLogger,
config.GetString("api.endpoint"),
)
if err != nil {
return err
}
return metricCollector.Run()
},
Flags: []cli.Flag{
&cli.StringFlag{
Name: "config",
Usage: "Specify the path to the devices file",
},
&cli.StringFlag{
Name: "api-endpoint",
Usage: "The api server endpoint",
EnvVars: []string{"COLLECTOR_API_ENDPOINT", "SCRUTINY_API_ENDPOINT"},
//SCRUTINY_API_ENDPOINT is deprecated, but kept for backwards compatibility
},
&cli.StringFlag{
Name: "log-file",
Usage: "Path to file for logging. Leave empty to use STDOUT",
EnvVars: []string{"COLLECTOR_LOG_FILE"},
},
&cli.BoolFlag{
Name: "debug",
Usage: "Enable debug logging",
EnvVars: []string{"COLLECTOR_DEBUG", "DEBUG"},
},
&cli.StringFlag{
Name: "host-id",
Usage: "Host identifier/label, used for grouping devices",
Value: "",
EnvVars: []string{"COLLECTOR_HOST_ID"},
},
},
},
},
}
err = app.Run(os.Args)
if err != nil {
log.Fatal(color.HiRedString("ERROR: %v", err))
}
}