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package main
import (
"bytes"
"encoding/json"
"fmt"
"io"
"log"
"net"
"net/http"
"os"
"time"
)
// Schema represents a schema registry schema
type Schema struct {
Subject string `json:"subject"`
Version int `json:"version"`
Schema string `json:"schema"`
}
// SchemaResponse represents the response from schema registry
type SchemaResponse struct {
ID int `json:"id"`
}
func main() {
log.Println("Setting up Kafka integration test environment...")
kafkaBootstrap := getEnv("KAFKA_BOOTSTRAP_SERVERS", "kafka:29092")
schemaRegistryURL := getEnv("SCHEMA_REGISTRY_URL", "http://schema-registry:8081")
kafkaGatewayURL := getEnv("KAFKA_GATEWAY_URL", "kafka-gateway:9093")
log.Printf("Kafka Bootstrap Servers: %s", kafkaBootstrap)
log.Printf("Schema Registry URL: %s", schemaRegistryURL)
log.Printf("Kafka Gateway URL: %s", kafkaGatewayURL)
// Wait for services to be ready
waitForHTTPService("Schema Registry", schemaRegistryURL+"/subjects")
waitForTCPService("Kafka Gateway", kafkaGatewayURL) // TCP connectivity check for Kafka protocol
// Register test schemas
if err := registerSchemas(schemaRegistryURL); err != nil {
log.Fatalf("Failed to register schemas: %v", err)
}
log.Println("Test environment setup completed successfully!")
}
func getEnv(key, defaultValue string) string {
if value := os.Getenv(key); value != "" {
return value
}
return defaultValue
}
func waitForHTTPService(name, url string) {
log.Printf("Waiting for %s to be ready...", name)
for i := 0; i < 60; i++ { // Wait up to 60 seconds
resp, err := http.Get(url)
if err == nil && resp.StatusCode < 400 {
resp.Body.Close()
log.Printf("%s is ready", name)
return
}
if resp != nil {
resp.Body.Close()
}
time.Sleep(1 * time.Second)
}
log.Fatalf("%s is not ready after 60 seconds", name)
}
func waitForTCPService(name, address string) {
log.Printf("Waiting for %s to be ready...", name)
for i := 0; i < 60; i++ { // Wait up to 60 seconds
conn, err := net.DialTimeout("tcp", address, 2*time.Second)
if err == nil {
conn.Close()
log.Printf("%s is ready", name)
return
}
time.Sleep(1 * time.Second)
}
log.Fatalf("%s is not ready after 60 seconds", name)
}
func registerSchemas(registryURL string) error {
schemas := []Schema{
{
Subject: "user-value",
Schema: `{
"type": "record",
"name": "User",
"fields": [
{"name": "id", "type": "int"},
{"name": "name", "type": "string"},
{"name": "email", "type": ["null", "string"], "default": null}
]
}`,
},
{
Subject: "user-event-value",
Schema: `{
"type": "record",
"name": "UserEvent",
"fields": [
{"name": "userId", "type": "int"},
{"name": "eventType", "type": "string"},
{"name": "timestamp", "type": "long"},
{"name": "data", "type": ["null", "string"], "default": null}
]
}`,
},
{
Subject: "log-entry-value",
Schema: `{
"type": "record",
"name": "LogEntry",
"fields": [
{"name": "level", "type": "string"},
{"name": "message", "type": "string"},
{"name": "timestamp", "type": "long"},
{"name": "service", "type": "string"},
{"name": "metadata", "type": {"type": "map", "values": "string"}}
]
}`,
},
}
for _, schema := range schemas {
if err := registerSchema(registryURL, schema); err != nil {
return fmt.Errorf("failed to register schema %s: %w", schema.Subject, err)
}
log.Printf("Registered schema: %s", schema.Subject)
}
return nil
}
func registerSchema(registryURL string, schema Schema) error {
url := fmt.Sprintf("%s/subjects/%s/versions", registryURL, schema.Subject)
payload := map[string]interface{}{
"schema": schema.Schema,
}
jsonData, err := json.Marshal(payload)
if err != nil {
return err
}
client := &http.Client{Timeout: 10 * time.Second}
resp, err := client.Post(url, "application/vnd.schemaregistry.v1+json", bytes.NewBuffer(jsonData))
if err != nil {
return err
}
defer resp.Body.Close()
if resp.StatusCode >= 400 {
body, _ := io.ReadAll(resp.Body)
return fmt.Errorf("HTTP %d: %s", resp.StatusCode, string(body))
}
var response SchemaResponse
if err := json.NewDecoder(resp.Body).Decode(&response); err != nil {
return err
}
log.Printf("Schema %s registered with ID: %d", schema.Subject, response.ID)
return nil
}
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