coder/coderd/httpmw/logger.go

68 lines
1.8 KiB
Go

package httpmw
import (
"context"
"fmt"
"net/http"
"time"
"cdr.dev/slog"
"github.com/coder/coder/coderd/httpapi"
"github.com/coder/coder/coderd/tracing"
)
func Logger(log slog.Logger) func(next http.Handler) http.Handler {
return func(next http.Handler) http.Handler {
return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
start := time.Now()
sw, ok := rw.(*tracing.StatusWriter)
if !ok {
panic(fmt.Sprintf("ResponseWriter not a *tracing.StatusWriter; got %T", rw))
}
httplog := log.With(
slog.F("host", httpapi.RequestHost(r)),
slog.F("path", r.URL.Path),
slog.F("proto", r.Proto),
slog.F("remote_addr", r.RemoteAddr),
)
next.ServeHTTP(sw, r)
// Don't log successful health check requests.
if r.URL.Path == "/api/v2" && sw.Status == http.StatusOK {
return
}
httplog = httplog.With(
slog.F("took", time.Since(start)),
slog.F("status_code", sw.Status),
slog.F("latency_ms", float64(time.Since(start)/time.Millisecond)),
)
// For status codes 400 and higher we
// want to log the response body.
if sw.Status >= http.StatusInternalServerError {
httplog = httplog.With(
slog.F("response_body", string(sw.ResponseBody())),
)
}
// We should not log at level ERROR for 5xx status codes because 5xx
// includes proxy errors etc. It also causes slogtest to fail
// instantly without an error message by default.
logLevelFn := httplog.Debug
if sw.Status >= http.StatusInternalServerError {
logLevelFn = httplog.Warn
}
// We already capture most of this information in the span (minus
// the response body which we don't want to capture anyways).
tracing.RunWithoutSpan(r.Context(), func(ctx context.Context) {
logLevelFn(ctx, r.Method)
})
})
}
}