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authorFelix Hanley <felix@userspace.com.au>2016-12-05 08:16:58 +0000
committerFelix Hanley <felix@userspace.com.au>2016-12-05 08:16:58 +0000
commitb049991a46a2f619344bd6e915745703864d0134 (patch)
treeec1d3897a7b69c7c63a3774d4c42dfbb8cb46432 /vendor/github.com/zenazn/goji/web/middleware/logger.go
parente1c3d6f7db06d592538f1162b2b6b9f1b6efa330 (diff)
downloadgo-dict2rest-master.tar.gz
go-dict2rest-master.tar.bz2
Clean up source structure and update vendor versionsHEADmaster
Diffstat (limited to 'vendor/github.com/zenazn/goji/web/middleware/logger.go')
-rw-r--r--vendor/github.com/zenazn/goji/web/middleware/logger.go92
1 files changed, 92 insertions, 0 deletions
diff --git a/vendor/github.com/zenazn/goji/web/middleware/logger.go b/vendor/github.com/zenazn/goji/web/middleware/logger.go
new file mode 100644
index 0000000..8bbcac8
--- /dev/null
+++ b/vendor/github.com/zenazn/goji/web/middleware/logger.go
@@ -0,0 +1,92 @@
+package middleware
+
+import (
+ "bytes"
+ "log"
+ "net/http"
+ "time"
+
+ "github.com/zenazn/goji/web"
+ "github.com/zenazn/goji/web/mutil"
+)
+
+// Logger is a middleware that logs the start and end of each request, along
+// with some useful data about what was requested, what the response status was,
+// and how long it took to return. When standard output is a TTY, Logger will
+// print in color, otherwise it will print in black and white.
+//
+// Logger prints a request ID if one is provided.
+//
+// Logger has been designed explicitly to be Good Enough for use in small
+// applications and for people just getting started with Goji. It is expected
+// that applications will eventually outgrow this middleware and replace it with
+// a custom request logger, such as one that produces machine-parseable output,
+// outputs logs to a different service (e.g., syslog), or formats lines like
+// those printed elsewhere in the application.
+func Logger(c *web.C, h http.Handler) http.Handler {
+ fn := func(w http.ResponseWriter, r *http.Request) {
+ reqID := GetReqID(*c)
+
+ printStart(reqID, r)
+
+ lw := mutil.WrapWriter(w)
+
+ t1 := time.Now()
+ h.ServeHTTP(lw, r)
+
+ if lw.Status() == 0 {
+ lw.WriteHeader(http.StatusOK)
+ }
+ t2 := time.Now()
+
+ printEnd(reqID, lw, t2.Sub(t1))
+ }
+
+ return http.HandlerFunc(fn)
+}
+
+func printStart(reqID string, r *http.Request) {
+ var buf bytes.Buffer
+
+ if reqID != "" {
+ cW(&buf, bBlack, "[%s] ", reqID)
+ }
+ buf.WriteString("Started ")
+ cW(&buf, bMagenta, "%s ", r.Method)
+ cW(&buf, nBlue, "%q ", r.URL.String())
+ buf.WriteString("from ")
+ buf.WriteString(r.RemoteAddr)
+
+ log.Print(buf.String())
+}
+
+func printEnd(reqID string, w mutil.WriterProxy, dt time.Duration) {
+ var buf bytes.Buffer
+
+ if reqID != "" {
+ cW(&buf, bBlack, "[%s] ", reqID)
+ }
+ buf.WriteString("Returning ")
+ status := w.Status()
+ if status < 200 {
+ cW(&buf, bBlue, "%03d", status)
+ } else if status < 300 {
+ cW(&buf, bGreen, "%03d", status)
+ } else if status < 400 {
+ cW(&buf, bCyan, "%03d", status)
+ } else if status < 500 {
+ cW(&buf, bYellow, "%03d", status)
+ } else {
+ cW(&buf, bRed, "%03d", status)
+ }
+ buf.WriteString(" in ")
+ if dt < 500*time.Millisecond {
+ cW(&buf, nGreen, "%s", dt)
+ } else if dt < 5*time.Second {
+ cW(&buf, nYellow, "%s", dt)
+ } else {
+ cW(&buf, nRed, "%s", dt)
+ }
+
+ log.Print(buf.String())
+}