refactor: logparser v6

logparser/v6/logly/parse/count.go

@@ -0,0 +1,40 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package parse
+
+import "fmt"
+
+// Count the parsed records.
+type Count struct {
+	// Parser is wrapped by Count to count the parsed records.
+	Parser
+	count int
+}
+
+// CountRecords creates a record counter that wraps a parser.
+func CountRecords(p Parser) *Count {
+	return &Count{Parser: p}
+}
+
+// Parse increments the counter.
+func (c *Count) Parse() bool {
+	c.count++
+	return c.Parser.Parse()
+}
+
+// Err returns the first error that was encountered by the Log.
+func (c *Count) Err() (err error) {
+	err = c.Parser.Err()
+	if err != nil {
+		err = fmt.Errorf("record #%d: %v", c.count, err)
+	}
+	return
+}
+
+// You don't need to implement the Value() method.
+// Thanks to interface embedding.