get schema versions

config/config.go

@@ -4,6 +4,7 @@ package config
 type Configurations struct {
 	Server                       ServerConfigurations
 	Kafka                        KafkaConfigurations
+	SchemaRegistry               SchemaRegistryConfigurations
 }
 
 
@@ -22,3 +23,8 @@ type KafkaConfigurations struct {
 	// SASL_Mechanism               string
 	// Security_Protocol            string
 }
+
+type SchemaRegistryConfigurations struct {
+	Endpoint                     string
+	Topics                       string
+}

config/config.yml

@@ -10,3 +10,7 @@ kafka:
     retry_backoff_ms: 500
     sasl_user: SASL_USER  # read from environment variable
     sasl_password: SASL_PASSWORD  # read from environment variable
+
+schemaRegistry:
+    endpoint: SCHEMA_REGISTRY_ENDPOINT
+    topics: TOPICS

main.go

@@ -3,11 +3,12 @@ package main
 
 import (
 	config "com.navi.medici.janus/config"
-	// producer_module "com.navi.medici.janus/producer"
+	producer_module "com.navi.medici.janus/producer"
 	server "com.navi.medici.janus/server"
 
 	"fmt"
 	"log"
+	"strings"
 	"github.com/spf13/viper"
 )
 
@@ -33,13 +34,20 @@ func init() {
 		fmt.Printf("Unable to decode into struct, %v", err)
 	}
 
-
 	configuration.Kafka.Bootstrap_Servers = viper.GetString(configuration.Kafka.Bootstrap_Servers)
 	configuration.Kafka.Sasl_User = viper.GetString(configuration.Kafka.Sasl_User)
 	configuration.Kafka.Sasl_Password = viper.GetString(configuration.Kafka.Sasl_Password)
+	configuration.SchemaRegistry.Endpoint = viper.GetString(configuration.SchemaRegistry.Endpoint)
+	configuration.SchemaRegistry.Topics = viper.GetString(configuration.SchemaRegistry.Topics)
 
 	port = configuration.Server.Port
 	log.Printf("PORT IS: ", port)
+	log.Printf(configuration.Kafka.Bootstrap_Servers)
+	log.Printf(configuration.Kafka.Sasl_User)
+	log.Printf(configuration.Kafka.Sasl_Password)
+	log.Printf(configuration.SchemaRegistry.Endpoint)
+
+	producer_module.GetSchemaVersions(configuration.SchemaRegistry.Endpoint, strings.Split(configuration.SchemaRegistry.Topics, ","))
 
 	// sync producer using sarama
 	// sync_producer := producer_module.GetSyncProducer(configuration.Kafka)

producer/get_schema.go

@@ -0,0 +1,32 @@
+package producer
+
+
+import (
+	"log"
+	"reflect"
+	"github.com/riferrei/srclient"
+)
+
+
+var (
+	schemaVersionMap         = make(map[string]int)
+)
+
+
+func GetSchemaVersions(schemaRegistryEndpoint string, topicList []string) {
+
+	schemaRegistryClient := srclient.CreateSchemaRegistryClient(schemaRegistryEndpoint)
+	schemaRegistryClient.CodecCreationEnabled(false)
+	for _, topic := range topicList {
+		schema, err := schemaRegistryClient.GetLatestSchema(topic, false)
+		if err != nil {
+			log.Println(err)
+		} else {
+			schemaId := schema.ID()
+			schemaVersionMap[topic] = schemaId
+		}
+	}
+
+	log.Println(schemaVersionMap)
+
+}