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61 lines
1.1 KiB
Go
61 lines
1.1 KiB
Go
package api
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import (
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"os"
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"net/http"
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"errors"
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log "github.com/sirupsen/logrus"
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"io"
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)
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var (
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lock chan bool
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)
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func init() {
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lock = make(chan bool, 1)
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lock <- true
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}
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func SetupHTTPUpdates(apiToken string, updateFunction func()) error {
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if apiToken == "" {
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return errors.New("API token is empty or has not been set. Not starting API.")
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}
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log.Println("Watchtower HTTP API started.")
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http.HandleFunc("/v1/update", func(w http.ResponseWriter, r *http.Request){
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log.Info("Updates triggered by HTTP API request.")
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_, err := io.Copy(os.Stdout, r.Body)
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if err != nil {
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log.Println(err)
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return
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}
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if r.Header.Get("Token") != apiToken {
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log.Println("Invalid token. Not updating.")
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return
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}
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log.Println("Valid token found. Attempting to update.")
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select {
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case chanValue := <- lock:
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defer func() { lock <- chanValue }()
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updateFunction()
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default:
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log.Debug("Skipped. Another update already running.")
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}
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})
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return nil
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}
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func WaitForHTTPUpdates() error {
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log.Fatal(http.ListenAndServe(":8080", nil))
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os.Exit(0)
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return nil
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} |