Add journal body memory limit flag

Author: tommysitu

core/cmd/hoverfly/main.go

@@ -64,6 +64,7 @@ var logOutputFlags arrayFlags
 var responseBodyFilesPath string
 var responseBodyFilesAllowedOriginFlags arrayFlags
 var journalIndexingKeyFlags arrayFlags
+var journalBodyMemoryLimit util.MemorySize
 
 const boltBackend = "boltdb"
 const inmemoryBackend = "memory"
@@ -210,6 +211,7 @@ func main() {
 	flag.StringVar(&responseBodyFilesPath, "response-body-files-path", "", "When a response contains a relative bodyFile, it will be resolved against this absolute path (default is CWD)")
 	flag.Var(&responseBodyFilesAllowedOriginFlags, "response-body-files-allow-origin", "When a response contains a url in bodyFile, it will be loaded only if the origin is allowed")
 	flag.Var(&journalIndexingKeyFlags, "journal-indexing-key", "Key to setup indexing on journal")
+	flag.Var(&journalBodyMemoryLimit, "journal-body-memory-limit", "Memory size limit for a request or response body in the journal (e.g., '128KB', '2MB'). Memory size is unbounded by default")
 
 	flag.Parse()
 
@@ -234,6 +236,10 @@ func main() {
 		*journalSize = 0
 	}
 
+	if journalBodyMemoryLimit > 0 {
+		log.Infof("Journal body memory limit is set to: %s", journalBodyMemoryLimit.String())
+	}
+
 	if *logsSize < 0 {
 		*logsSize = 0
 	}

core/util/memory_size.go

@@ -11,7 +11,7 @@ type MemorySize int64
 
 // String returns the string representation of the memory size
 func (m *MemorySize) String() string {
-	return fmt.Sprintf("%d", *m)
+	return fmt.Sprintf("%d bytes", *m)
 }
 
 // ToBytes returns the memory size as an int64 in bytes.