99 lines
2.9 KiB
Go
99 lines
2.9 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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"strings"
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"github.com/spf13/pflag"
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"golift.io/version"
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)
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// New returns a new poller struct.
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func New() *UnifiPoller {
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return &UnifiPoller{Config: &Config{Poller: &Poller{}}, Flags: &Flags{}}
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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.Flags.Parse(os.Args[1:])
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if u.Flags.ShowVer {
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fmt.Println(version.Print(AppName))
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return nil // don't run anything else w/ version request.
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}
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if u.Flags.HashPW != "" {
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return u.PrintPasswordHash()
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}
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cfile, err := getFirstFile(strings.Split(u.Flags.ConfigFile, ","))
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if err != nil {
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return err
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}
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u.Flags.ConfigFile = cfile
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if u.Flags.DumpJSON == "" { // do not print this when dumping JSON.
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u.Logf("Loading Configuration File: %s", u.Flags.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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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 *Flags) 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.HashPW, "encrypt", "e", "",
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"This option bcrypts a provided string. Useful for the webserver password. Use - to be prompted.")
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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(),
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"Poller config file path. Separating multiple paths with a comma will load the first config file found.")
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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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if u.Flags.DumpJSON != "" {
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u.Config.Quiet = true
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if err := u.InitializeInputs(); err != nil {
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return err
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}
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return u.PrintRawMetrics()
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}
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if u.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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log.Printf("[INFO] UniFi Poller v%v Starting Up! PID: %d", version.Version, os.Getpid())
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if err := u.InitializeInputs(); err != nil {
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return err
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}
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return u.InitializeOutputs()
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}
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