mirror of
https://github.com/fnproject/fn.git
synced 2022-10-28 21:29:17 +03:00
657afd5838
* fn: fnlb: enhancements and new grouper tests *) added healthy threshold (default: 1) *) grouper is now using configured hcEndpoint for version checks *) grouper now logs when servers switch between healthy/unhealthy status *) moved DB code out of grouper *) run health check immediately at start (don't wait until hcInterval) *) optional shutdown timeout (default: 0) & mgmt port (default: 8081) *) hot path List() in grouper now uses atomic ptr Load *) consistent router: moved closure to a new function *) bugfix: version parsing from fn servers should not panic fnlb *) bugfix: servers removed from DB, stayed in healthy list *) bugfix: if DB is down, health checker stopped monitoring *) basic new tests for grouper (add/rm/unhealthy/healthy) server
55 lines
1.0 KiB
Go
55 lines
1.0 KiB
Go
package lb
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import (
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"encoding/json"
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"errors"
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"net/http"
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"github.com/sirupsen/logrus"
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)
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var (
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ErrNoNodes = errors.New("no nodes available")
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ErrUnknownCommand = errors.New("unknown command")
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)
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func sendValue(w http.ResponseWriter, v interface{}) {
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err := json.NewEncoder(w).Encode(v)
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if err != nil {
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logrus.WithError(err).Error("error writing response response")
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}
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}
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func sendSuccess(w http.ResponseWriter, msg string) {
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err := json.NewEncoder(w).Encode(struct {
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Msg string `json:"msg"`
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}{
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Msg: msg,
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})
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if err != nil {
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logrus.WithError(err).Error("error writing response response")
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}
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}
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func sendError(w http.ResponseWriter, code int, msg string) {
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w.WriteHeader(code)
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err := json.NewEncoder(w).Encode(struct {
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Msg string `json:"msg"`
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}{
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Msg: msg,
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})
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if err != nil {
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logrus.WithError(err).Error("error writing response response")
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}
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}
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func NullHandler() http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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sendError(w, http.StatusNotFound, ErrUnknownCommand.Error())
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})
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}
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