272 lines
7.9 KiB
Go
272 lines
7.9 KiB
Go
package gotop
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import (
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"bufio"
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"bytes"
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"fmt"
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"io"
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"io/ioutil"
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"log"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"time"
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"github.com/shibukawa/configdir"
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"github.com/xxxserxxx/gotop/v4/colorschemes"
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"github.com/xxxserxxx/gotop/v4/widgets"
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)
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// CONFFILE is the name of the default config file
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const CONFFILE = "gotop.conf"
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type Config struct {
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ConfigDir configdir.ConfigDir
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GraphHorizontalScale int
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HelpVisible bool
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Colorscheme colorschemes.Colorscheme
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UpdateInterval time.Duration
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AverageLoad bool
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PercpuLoad bool
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Statusbar bool
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TempScale widgets.TempScale
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NetInterface string
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Layout string
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MaxLogSize int64
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ExportPort string
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Mbps bool
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Temps []string
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Test bool
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ExtensionVars map[string]string
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ConfigFile string
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}
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func NewConfig() Config {
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cd := configdir.New("", "gotop")
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cd.LocalPath, _ = filepath.Abs(".")
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conf := Config{
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ConfigDir: cd,
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GraphHorizontalScale: 7,
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HelpVisible: false,
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UpdateInterval: time.Second,
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AverageLoad: false,
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PercpuLoad: true,
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TempScale: widgets.Celsius,
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Statusbar: false,
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NetInterface: widgets.NetInterfaceAll,
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MaxLogSize: 5000000,
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Layout: "default",
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ExtensionVars: make(map[string]string),
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}
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conf.Colorscheme, _ = colorschemes.FromName(conf.ConfigDir, "default")
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folder := conf.ConfigDir.QueryFolderContainsFile(CONFFILE)
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if folder != nil {
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conf.ConfigFile = filepath.Join(folder.Path, CONFFILE)
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}
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return conf
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}
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func (conf *Config) Load() error {
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var in []byte
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if conf.ConfigFile == "" {
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return nil
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}
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var err error
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if _, err = os.Stat(conf.ConfigFile); os.IsNotExist(err) {
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// Check for the file in the usual suspects
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folder := conf.ConfigDir.QueryFolderContainsFile(conf.ConfigFile)
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if folder == nil {
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return nil
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}
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conf.ConfigFile = filepath.Join(folder.Path, conf.ConfigFile)
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}
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if in, err = ioutil.ReadFile(conf.ConfigFile); err != nil {
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return err
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}
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return load(bytes.NewReader(in), conf)
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}
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func load(in io.Reader, conf *Config) error {
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r := bufio.NewScanner(in)
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var lineNo int
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for r.Scan() {
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l := strings.TrimSpace(r.Text())
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if l[0] == '#' {
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continue
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}
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kv := strings.Split(l, "=")
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if len(kv) != 2 {
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return fmt.Errorf("bad config file syntax; should be KEY=VALUE, was %s", l)
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}
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key := strings.ToLower(kv[0])
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switch key {
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default:
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conf.ExtensionVars[key] = kv[1]
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case "configdir":
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log.Printf("configdir is deprecated. Ignored configdir=%s", kv[1])
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case "logdir":
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log.Printf("logdir is deprecated. Ignored logdir=%s", kv[1])
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case "logfile":
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log.Printf("logfile is deprecated. Ignored logfile=%s", kv[1])
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case graphhorizontalscale:
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iv, err := strconv.Atoi(kv[1])
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if err != nil {
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return err
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}
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conf.GraphHorizontalScale = iv
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case helpvisible:
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bv, err := strconv.ParseBool(kv[1])
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if err != nil {
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return fmt.Errorf("line %d: %v", lineNo, err)
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}
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conf.HelpVisible = bv
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case colorscheme:
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cs, err := colorschemes.FromName(conf.ConfigDir, kv[1])
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if err != nil {
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return fmt.Errorf("line %d: %v", lineNo, err)
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}
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conf.Colorscheme = cs
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case updateinterval:
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iv, err := strconv.Atoi(kv[1])
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if err != nil {
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return err
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}
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conf.UpdateInterval = time.Duration(iv)
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case averagecpu:
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bv, err := strconv.ParseBool(kv[1])
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if err != nil {
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return fmt.Errorf("line %d: %v", lineNo, err)
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}
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conf.AverageLoad = bv
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case percpuload:
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bv, err := strconv.ParseBool(kv[1])
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if err != nil {
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return fmt.Errorf("line %d: %v", lineNo, err)
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}
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conf.PercpuLoad = bv
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case tempscale:
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switch kv[1] {
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case "C":
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conf.TempScale = 'C'
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case "F":
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conf.TempScale = 'F'
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default:
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conf.TempScale = 'C'
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return fmt.Errorf("invalid TempScale value %s", kv[1])
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}
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case statusbar:
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bv, err := strconv.ParseBool(kv[1])
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if err != nil {
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return fmt.Errorf("line %d: %v", lineNo, err)
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}
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conf.Statusbar = bv
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case netinterface:
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conf.NetInterface = kv[1]
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case layout:
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conf.Layout = kv[1]
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case maxlogsize:
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iv, err := strconv.Atoi(kv[1])
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if err != nil {
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return err
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}
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conf.MaxLogSize = int64(iv)
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case export:
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conf.ExportPort = kv[1]
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case mbps:
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conf.Mbps = true
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case temperatures:
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conf.Temps = strings.Split(kv[1], ",")
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}
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}
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return nil
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}
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// Write serializes the configuration to a file.
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// The configuration written is based on the loaded configuration, plus any
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// command-line changes, so it can be used to update an existing configuration
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// file. The file will be written to the specificed `--config` argument file,
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// if one is set; otherwise, it'll create one in the user's config directory.
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func (conf *Config) Write() (string, error) {
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var dir *configdir.Config
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var file string = CONFFILE
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if conf.ConfigFile == "" {
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ds := conf.ConfigDir.QueryFolders(configdir.Global)
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if len(ds) == 0 {
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ds = conf.ConfigDir.QueryFolders(configdir.Local)
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if len(ds) == 0 {
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return "", fmt.Errorf("error locating config folders")
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}
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}
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ds[0].CreateParentDir(CONFFILE)
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dir = ds[0]
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} else {
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dir = &configdir.Config{}
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dir.Path = filepath.Dir(conf.ConfigFile)
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file = filepath.Base(conf.ConfigFile)
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}
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marshalled := marshal(conf)
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err := dir.WriteFile(file, marshalled)
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if err != nil {
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return "", err
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}
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return filepath.Join(dir.Path, file), nil
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}
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func marshal(c *Config) []byte {
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buff := bytes.NewBuffer(nil)
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fmt.Fprintln(buff, "# Scale graphs to this level; 7 is the default, 2 is zoomed out.")
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fmt.Fprintf(buff, "%s=%d\n", graphhorizontalscale, c.GraphHorizontalScale)
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fmt.Fprintln(buff, "# If true, start the UI with the help visible")
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fmt.Fprintf(buff, "%s=%t\n", helpvisible, c.HelpVisible)
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fmt.Fprintln(buff, "# The color scheme to use. See `--list colorschemes`")
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fmt.Fprintf(buff, "%s=%s\n", colorscheme, c.Colorscheme.Name)
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fmt.Fprintln(buff, "# How frequently to update the UI, in nanoseconds")
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fmt.Fprintf(buff, "%s=%d\n", updateinterval, c.UpdateInterval)
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fmt.Fprintln(buff, "# If true, show the average CPU load")
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fmt.Fprintf(buff, "%s=%t\n", averagecpu, c.AverageLoad)
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fmt.Fprintln(buff, "# If true, show load per CPU")
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fmt.Fprintf(buff, "%s=%t\n", percpuload, c.PercpuLoad)
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fmt.Fprintln(buff, "# Temperature units. C for Celcius, F for Fahrenheit")
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fmt.Fprintf(buff, "%s=%c\n", tempscale, c.TempScale)
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fmt.Fprintln(buff, "# If true, display a status bar")
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fmt.Fprintf(buff, "%s=%t\n", statusbar, c.Statusbar)
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fmt.Fprintln(buff, "# The network interface to monitor")
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fmt.Fprintf(buff, "%s=%s\n", netinterface, c.NetInterface)
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fmt.Fprintln(buff, "# A layout name. See `--list layouts`")
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fmt.Fprintf(buff, "%s=%s\n", layout, c.Layout)
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fmt.Fprintln(buff, "# The maximum log file size, in bytes")
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fmt.Fprintf(buff, "%s=%d\n", maxlogsize, c.MaxLogSize)
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fmt.Fprintln(buff, "# If set, export data as Promethius metrics on the interface:port.\n# E.g., `:8080` (colon is required, interface is not)")
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if c.ExportPort == "" {
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fmt.Fprint(buff, "#")
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}
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fmt.Fprintf(buff, "%s=%s\n", export, c.ExportPort)
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fmt.Fprintln(buff, "# Display network IO in mpbs if true")
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fmt.Fprintf(buff, "%s=%t\n", mbps, c.Mbps)
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fmt.Fprintln(buff, "# A list of enabled temp sensors. See `--list devices`")
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if len(c.Temps) == 0 {
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fmt.Fprint(buff, "#")
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}
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fmt.Fprintf(buff, "%s=%s\n", temperatures, strings.Join(c.Temps, ","))
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return buff.Bytes()
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}
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const (
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graphhorizontalscale = "graphhorizontalscale"
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helpvisible = "helpvisible"
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colorscheme = "colorscheme"
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updateinterval = "updateinterval"
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averagecpu = "averagecpu"
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percpuload = "percpuload"
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tempscale = "tempscale"
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statusbar = "statusbar"
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netinterface = "netinterface"
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layout = "layout"
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maxlogsize = "maxlogsize"
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export = "metricsexportport"
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mbps = "mbps"
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temperatures = "temperatures"
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)
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