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authorVincent Ambo <tazjin@google.com>2019-10-28T21·38+0100
committerVincent Ambo <github@tazj.in>2019-10-29T18·16+0100
commit904c3dade00881c6872dc633a135e12bdfe7e76b (patch)
treec94c47789e6007f4ac340861dc75158a2ea3af4d /tools/nixery/server/logs.go
parent3a7c964a22ac0d7805cbe2d0a5f42f030ee68c19 (diff)
refactor(server): Handle non-error errors safely
This case should not be possible unless something manually constructs
a logrus entry with a non-error value in the log.ErrorKey field, but
it's better to be safe than sorry.
Diffstat (limited to 'tools/nixery/server/logs.go')
-rw-r--r--tools/nixery/server/logs.go11
1 files changed, 6 insertions, 5 deletions
diff --git a/tools/nixery/server/logs.go b/tools/nixery/server/logs.go
index cc218c69d265..7077b2b208fe 100644
--- a/tools/nixery/server/logs.go
+++ b/tools/nixery/server/logs.go
@@ -76,11 +76,12 @@ func (f stackdriverFormatter) Format(e *log.Entry) ([]byte, error) {
 	msg["eventTime"] = &e.Time
 	msg["severity"] = logSeverity(e.Level)
 
-	if err, ok := msg[log.ErrorKey]; ok {
-		// TODO(tazjin): Cast safely - for now there should be
-		// no calls to `.WithError` with a nil error, but who
-		// knows.
-		msg[log.ErrorKey] = (err.(error)).Error()
+	if e, ok := msg[log.ErrorKey]; ok {
+		if err, isError := e.(error); isError {
+			msg[log.ErrorKey] = err.Error()
+		} else {
+			delete(msg, log.ErrorKey)
+		}
 	}
 
 	if isError(e) {