57 lines
1.3 KiB
Go
57 lines
1.3 KiB
Go
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package handlers
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import (
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"context"
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"net/http"
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"sync/atomic"
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log "github.com/sirupsen/logrus"
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)
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type key int
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const (
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requestIdKey key = iota
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)
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func Logging(logger *log.Logger) func(http.Handler) http.Handler {
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return func(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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defer func() {
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requestId, ok := r.Context().Value(requestIdKey).(string)
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if !ok {
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requestId = "unknown"
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}
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logger.Infoln(requestId, r.Method, r.URL.Path, r.RemoteAddr, r.UserAgent())
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}()
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next.ServeHTTP(w, r)
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})
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}
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}
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func Tracing(nextRequestId func() string) func(http.Handler) http.Handler {
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return func(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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requestId := r.Header.Get("X-Request-Id")
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if requestId == "" {
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requestId = nextRequestId()
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}
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ctx := context.WithValue(r.Context(), requestIdKey, requestId)
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w.Header().Set("X-Request-Id", requestId)
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next.ServeHTTP(w, r.WithContext(ctx))
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})
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}
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}
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var Healthy int32
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func NewHealthHandler() http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if atomic.LoadInt32(&Healthy) == 1 {
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w.WriteHeader(http.StatusNoContent)
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return
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}
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w.WriteHeader(http.StatusServiceUnavailable)
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})
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}
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