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Log client name and version #727

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merged 3 commits into from
Jan 10, 2019
Merged

Log client name and version #727

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a9fa46b
Log client name and version
bartekn Oct 25, 2018
76940be
Check GET values
bartekn Oct 25, 2018
2da08e3
Merge branch 'master' into log-client-name-version
bartekn Jan 10, 2019
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54 changes: 37 additions & 17 deletions services/horizon/internal/middleware_logger.go
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,11 @@ import (
"github.com/stellar/go/support/log"
)

const (
clientNameHeader = "X-Client-Name"
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Do we have any documentations about these two fields? I couldn't find the information about the client who would send request with these header fields.

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Good point about documenting these fields. Added a new item to #725.

clientVersionHeader = "X-Client-Version"
)

// LoggerMiddleware is the middleware that logs http requests and resposnes
// to the logging subsytem of horizon.
func LoggerMiddleware(h http.Handler) http.Handler {
Expand All @@ -39,29 +44,44 @@ func LoggerMiddleware(h http.Handler) http.Handler {
return http.HandlerFunc(fn)
}

// getClientData gets client data (name or version) from header or GET parameter
// (useful when not possible to set headers, like in EventStream).
func getClientData(r *http.Request, headerName string) string {
value := r.Header.Get(headerName)
if value != "" {
return value
}

return r.URL.Query().Get(headerName)
}

func logStartOfRequest(ctx context.Context, r *http.Request) {
log.Ctx(ctx).WithFields(log.F{
"path": r.URL.String(),
"method": r.Method,
"ip": remoteAddrIP(r),
"ip_port": r.RemoteAddr,
"forwarded_ip": firstXForwardedFor(r),
"host": r.Host,
"client_name": getClientData(r, clientNameHeader),
"client_version": getClientData(r, clientVersionHeader),
"forwarded_ip": firstXForwardedFor(r),
"host": r.Host,
"ip": remoteAddrIP(r),
"ip_port": r.RemoteAddr,
"method": r.Method,
"path": r.URL.String(),
}).Info("Starting request")
}

func logEndOfRequest(ctx context.Context, r *http.Request, duration time.Duration, mw middleware.WrapResponseWriter, streaming bool) {
log.Ctx(ctx).WithFields(log.F{
"path": r.URL.String(),
"route": chi.RouteContext(r.Context()).RoutePattern(),
"method": r.Method,
"ip": remoteAddrIP(r),
"ip_port": r.RemoteAddr,
"forwarded_ip": firstXForwardedFor(r),
"host": r.Host,
"status": mw.Status(),
"bytes": mw.BytesWritten(),
"duration": duration.Seconds(),
"streaming": streaming,
"bytes": mw.BytesWritten(),
"client_name": getClientData(r, clientNameHeader),
"client_version": getClientData(r, clientVersionHeader),
"duration": duration.Seconds(),
"forwarded_ip": firstXForwardedFor(r),
"host": r.Host,
"ip": remoteAddrIP(r),
"ip_port": r.RemoteAddr,
"method": r.Method,
"path": r.URL.String(),
"route": chi.RouteContext(r.Context()).RoutePattern(),
"status": mw.Status(),
"streaming": streaming,
}).Info("Finished request")
}