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package backend
import (
"fmt"
"net/http"
"regexp"
"time"
"git.adyxax.org/adyxax/tfstated/pkg/database"
"git.adyxax.org/adyxax/tfstated/pkg/helpers"
)
type lockRequest struct {
Created time.Time `json:"Created"`
ID string `json:"ID"`
Info string `json:"Info"`
Operation string `json:"Operation"`
Path string `json:"Path"`
Version string `json:"Version"`
Who string `json:"Who"`
}
var (
validID = regexp.MustCompile("[a-f0-9]{8}-(?:[a-f0-9]{4}-){3}[a-f0-9]{12}")
)
func (l *lockRequest) valid() []error {
err := make([]error, 0)
if !validID.MatchString(l.ID) {
err = append(err, fmt.Errorf("invalid ID"))
}
return err
}
func handleLock(db *database.DB) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.URL.Path == "/" {
_ = helpers.Encode(w, http.StatusBadRequest,
fmt.Errorf("no state path provided, cannot LOCK /"))
return
}
var lock lockRequest
if err := helpers.Decode(r, &lock); err != nil {
_ = helpers.Encode(w, http.StatusBadRequest, err)
return
}
if errs := lock.valid(); len(errs) > 0 {
_ = helpers.Encode(w, http.StatusBadRequest,
fmt.Errorf("invalid lock: %+v", errs))
return
}
if success, err := db.SetLockOrGetExistingLock(r.URL.Path, &lock); err != nil {
helpers.ErrorResponse(w, http.StatusInternalServerError, err)
} else if success {
w.WriteHeader(http.StatusOK)
} else {
_ = helpers.Encode(w, http.StatusConflict, lock)
}
})
}
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