106 lines
3.0 KiB
Go
106 lines
3.0 KiB
Go
// Package poller provides the CLI interface to setup unifi-poller.
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package poller
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import (
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"fmt"
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"log"
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"os"
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"github.com/github/hub/version"
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"github.com/spf13/pflag"
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)
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// New returns a new poller struct preloaded with default values.
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// No need to call this if you call Start.c
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func New() *UnifiPoller {
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return &UnifiPoller{
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Config: &Config{},
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Flag: &Flag{
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ConfigFile: DefaultConfFile,
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},
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}
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}
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// Start begins the application from a CLI.
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// Parses cli flags, parses config file, parses env vars, sets up logging, then:
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// - dumps a json payload OR - executes Run().
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func (u *UnifiPoller) Start() error {
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log.SetOutput(os.Stdout)
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log.SetFlags(log.LstdFlags)
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u.Flag.Parse(os.Args[1:])
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if u.Flag.ShowVer {
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fmt.Printf("%s v%s\n", AppName, version.Version)
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return nil // don't run anything else w/ version request.
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}
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if u.Flag.DumpJSON == "" { // do not print this when dumping JSON.
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u.Logf("Loading Configuration File: %s", u.Flag.ConfigFile)
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}
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// Parse config file and ENV variables.
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if err := u.ParseConfigs(); err != nil {
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return err
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}
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if len(u.Config.Controllers) < 1 {
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u.Config.Controllers = []Controller{{
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Sites: []string{"all"},
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User: defaultUnifiUser,
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Pass: "",
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URL: defaultUnifiURL,
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SaveSites: true,
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}}
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}
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if u.Flag.DumpJSON != "" {
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return u.DumpJSONPayload()
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}
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if u.Config.Debug {
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log.SetFlags(log.Lshortfile | log.Lmicroseconds | log.Ldate)
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u.LogDebugf("Debug Logging Enabled")
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}
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return u.Run()
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}
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// Parse turns CLI arguments into data structures. Called by Start() on startup.
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func (f *Flag) Parse(args []string) {
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f.FlagSet = pflag.NewFlagSet(AppName, pflag.ExitOnError)
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f.Usage = func() {
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fmt.Printf("Usage: %s [--config=/path/to/up.conf] [--version]", AppName)
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f.PrintDefaults()
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}
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f.StringVarP(&f.DumpJSON, "dumpjson", "j", "",
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"This debug option prints a json payload and exits. See man page for more info.")
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f.StringVarP(&f.ConfigFile, "config", "c", DefaultConfFile, "Poller config file path.")
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f.BoolVarP(&f.ShowVer, "version", "v", false, "Print the version and exit.")
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_ = f.FlagSet.Parse(args) // pflag.ExitOnError means this will never return error.
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}
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// Run picks a mode and executes the associated functions. This will do one of three things:
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// 1. Start the collector routine that polls unifi and reports to influx on an interval. (default)
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// 2. Run the collector one time and report the metrics to influxdb. (lambda)
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// 3. Start a web server and wait for Prometheus to poll the application for metrics.
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func (u *UnifiPoller) Run() error {
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log.Printf("[INFO] UniFi Poller v%v Starting Up! PID: %d", version.Version, os.Getpid())
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for i, c := range u.Config.Controllers {
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if c.Name == "" {
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u.Config.Controllers[i].Name = c.URL
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}
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switch err := u.GetUnifi(c); err {
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case nil:
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u.Logf("Polling UniFi Controller at %s v%s as user %s. Sites: %v",
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c.URL, c.Unifi.ServerVersion, c.User, c.Sites)
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default:
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u.LogErrorf("Controller Auth or Connection failed, but continuing to retry! %s: %v", c.URL, err)
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}
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}
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return u.InitializeOutputs()
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}
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