mirror of
https://github.com/TwiN/gatus.git
synced 2024-11-07 08:34:15 +01:00
Allow configuration file to be passed as parameter
This commit is contained in:
parent
66e48609b4
commit
c9c076a959
@ -5,6 +5,7 @@ import (
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"github.com/TwinProduction/gatus/core"
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"gopkg.in/yaml.v2"
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"io/ioutil"
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"log"
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"os"
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"time"
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)
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@ -15,28 +16,44 @@ type Config struct {
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}
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var (
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ErrNoServiceInConfig = errors.New("configuration file should contain at least 1 service")
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config *Config
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ErrNoServiceInConfig = errors.New("configuration file should contain at least 1 service")
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ErrConfigFileNotFound = errors.New("configuration file not found")
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ErrConfigNotLoaded = errors.New("configuration is nil")
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config *Config
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)
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func Get() *Config {
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if config == nil {
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cfg, err := readConfigurationFile("config.yaml")
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if err != nil {
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if os.IsNotExist(err) {
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cfg, err = readConfigurationFile("config.yml")
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if err != nil {
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panic(err)
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}
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} else {
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panic(err)
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}
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}
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config = cfg
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panic(ErrConfigNotLoaded)
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}
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return config
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}
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func Load(configFile string) error {
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log.Printf("[config][Load] Attempting to load config from configFile=%s", configFile)
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cfg, err := readConfigurationFile(configFile)
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if err != nil {
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if os.IsNotExist(err) {
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return ErrConfigFileNotFound
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} else {
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return err
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}
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}
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config = cfg
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return nil
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}
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func LoadDefaultConfiguration() error {
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err := Load("config.yaml")
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if err != nil {
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if err == ErrConfigFileNotFound {
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return Load("config.yml")
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}
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return err
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}
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return nil
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}
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func readConfigurationFile(fileName string) (config *Config, err error) {
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var bytes []byte
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if bytes, err = ioutil.ReadFile(fileName); err == nil {
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20
main.go
20
main.go
@ -8,20 +8,36 @@ import (
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"github.com/prometheus/client_golang/prometheus/promhttp"
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"log"
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"net/http"
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"os"
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)
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func main() {
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go watchdog.Monitor()
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cfg := loadConfiguration()
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go watchdog.Monitor(cfg)
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http.HandleFunc("/api/v1/results", serviceResultsHandler)
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http.HandleFunc("/health", healthHandler)
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http.Handle("/", http.FileServer(http.Dir("./static")))
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if config.Get().Metrics {
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if cfg.Metrics {
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http.Handle("/metrics", promhttp.Handler())
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}
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log.Println("[main][main] Listening on port 8080")
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log.Fatal(http.ListenAndServe(":8080", nil))
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}
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func loadConfiguration() *config.Config {
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args := os.Args
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var err error
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if len(args) == 2 {
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err = config.Load(args[1])
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} else {
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err = config.LoadDefaultConfiguration()
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}
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if err != nil {
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panic(err)
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}
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return config.Get()
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}
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func serviceResultsHandler(writer http.ResponseWriter, _ *http.Request) {
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serviceResults := watchdog.GetServiceResults()
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writer.WriteHeader(http.StatusOK)
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@ -18,8 +18,8 @@ func GetServiceResults() *map[string][]*core.Result {
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return &serviceResults
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}
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func Monitor() {
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for _, service := range config.Get().Services {
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func Monitor(cfg *config.Config) {
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for _, service := range cfg.Services {
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go func(service *core.Service) {
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for {
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log.Printf("[watchdog][Monitor] Monitoring serviceName=%s", service.Name)
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