Add the source code for the CLI totool

cmd/cli/main.go

@@ -0,0 +1,53 @@
+// Copyright (c) 2020 Jorge Luis Betancourt. All rights reserved.
+// Use of this source code is governed by the Apache License, Version 2.0
+// that can be found in the LICENSE file.
+
+package main
+
+import (
+	"bufio"
+	"encoding/json"
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/elastic/beats/libbeat/processors/dissect"
+	"gopkg.in/alecthomas/kingpin.v2"
+)
+
+func main() {
+	var (
+		pattern = kingpin.Flag("pattern", "Tokenizer pattern to test the samples.").Required().Short('p').String()
+	)
+
+	kingpin.UsageTemplate(kingpin.CompactUsageTemplate).Version("0.1").Author("Jorge Luis Betancourt")
+	kingpin.CommandLine.Help = "Tool for testing a set of sample loglines against a dissect pattern."
+	kingpin.Parse()
+
+	processor, err := dissect.New(*pattern)
+	if err != nil {
+		fmt.Printf("ERROR: Coudln't create the processor: %s", err.Error())
+		return
+	}
+
+	fmt.Println("Enter a sample per line to evaluate")
+	reader := bufio.NewReader(os.Stdin)
+	for {
+		sample, _ := reader.ReadString('\n')
+		sample = strings.TrimSuffix(sample, "\n")
+
+		if sample == "" {
+			return
+		}
+
+		tokens, err := processor.Dissect(sample)
+		if err != nil {
+			fmt.Printf("ERROR: %s", err.Error())
+			continue
+		}
+
+		payload, err := json.Marshal(tokens)
+
+		fmt.Printf("%v\n", string(payload))
+	}
+}