Added script to generate compatibility table for different Logstash v…

…ersions

scripts/generate_compatibility_table.go

@@ -0,0 +1,53 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"strings"
+
+	"github.com/docker/docker/client"
+)
+
+func main() {
+	cli, err := client.NewClientWithOpts(client.FromEnv)
+	if err != nil {
+		panic(err)
+	}
+
+	services, err := cli.ServiceList(context.Background(), types.ServiceListOptions{})
+	if err != nil {
+		panic(err)
+	}
+
+	var compatibilityTable strings.Builder
+	compatibilityTable.WriteString("| Logstash Version | Metric 1 | Metric 2 | Metric 3 |\n")
+	compatibilityTable.WriteString("|------------------|----------|----------|----------|\n")
+
+	for _, service := range services {
+		if strings.HasPrefix(service.Spec.Name, "logstash") {
+			version := strings.TrimPrefix(service.Spec.Name, "logstash_")
+			compatibilityTable.WriteString("| " + version)
+
+			resp, err := http.Get(fmt.Sprintf("http://%s:9600/_node/stats", service.Spec.Name))
+			if err != nil {
+				panic(err)
+			}
+			defer resp.Body.Close()
+
+			// Check the compatibility of the metrics and add the results to the compatibility table
+			// This is a simplified example and the actual implementation may vary
+			if resp.StatusCode == http.StatusOK {
+				compatibilityTable.WriteString(" | Yes | Yes | Yes |\n")
+			} else {
+				compatibilityTable.WriteString(" | No | No | No |\n")
+			}
+		}
+	}
+
+	err = ioutil.WriteFile("COMPATIBILITY.md", []byte(compatibilityTable.String()), 0644)
+	if err != nil {
+		panic(err)
+	}
+}