drone/app/api/middleware/logging/logging.go

93 lines
2.9 KiB
Go

// Copyright 2023 Harness, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package logging
import (
"net/http"
"time"
"github.com/harness/gitness/app/api/request"
"github.com/harness/gitness/git"
"github.com/harness/gitness/logging"
"github.com/rs/xid"
"github.com/rs/zerolog"
"github.com/rs/zerolog/hlog"
)
const (
requestIDHeader = "X-Request-Id"
)
// HLogRequestIDHandler provides a middleware that injects request_id into the logging and execution context.
// It prefers the X-Request-Id header, if that doesn't exist it creates a new request id similar to zerolog.
func HLogRequestIDHandler() func(http.Handler) http.Handler {
return func(h http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
// read requestID from header (or create new one if none exists)
var reqID string
if reqIDs, ok := r.Header[requestIDHeader]; ok && len(reqIDs) > 0 && len(reqIDs[0]) > 0 {
reqID = reqIDs[0]
} else {
// similar to zerolog requestID generation
reqID = xid.New().String()
}
// add requestID to context for internal usage client!
ctx = request.WithRequestID(ctx, reqID)
ctx = git.WithRequestID(ctx, reqID)
// update logging context with request ID
logging.UpdateContext(ctx, logging.WithRequestID(reqID))
// write request ID to response headers
w.Header().Set(requestIDHeader, reqID)
// continue serving request
h.ServeHTTP(w, r.WithContext(ctx))
})
}
}
// HLogAccessLogHandler provides an hlog based middleware that logs access logs.
func HLogAccessLogHandler() func(http.Handler) http.Handler {
return hlog.AccessHandler(
func(r *http.Request, status, size int, duration time.Duration) {
hlog.FromRequest(r).Info().
Int("http.status_code", status).
Int("http.response_size_bytes", size).
Dur("http.elapsed_ms", duration).
Msg("http request completed.")
},
)
}
func URLHandler(fieldKey string) func(next http.Handler) http.Handler {
return func(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
log := zerolog.Ctx(r.Context())
log.UpdateContext(func(c zerolog.Context) zerolog.Context {
if r.URL.RawPath != "" {
return c.Str(fieldKey, r.URL.RawPath+"?"+r.URL.RawQuery)
}
return c.Str(fieldKey, r.URL.Path+"?"+r.URL.RawQuery)
})
next.ServeHTTP(w, r)
})
}
}