services-users

services-users (example)

Contoh service users menggunakan go-micro-libs berarsitektur DDD + bootstrap modular:

• Config (file provider + watcher)
• Logging (console/logrus)
• Communication HTTP provider (tanpa mux custom)
• Discovery (Consul)
• Messaging (Kafka) publish/subscribe
• Monitoring (Prometheus)
• Database (PostgreSQL) via DatabaseManager
• Rate Limit (in-memory) token bucket
• Circuit Breaker (gobreaker)
• Failover (Consul provider)

Menjalankan

1. Set konfigurasi di examples/services-users/config.yaml atau environment variables:

export CONFIG_PATH=./examples/services-users/config.yaml
export CONSUL_ADDR=localhost:8500
export PROM_HOST=localhost
export SERVICE_ID=user-service-1
# Postgres
export PGHOST=localhost
export PGPORT=5432
export PGUSER=postgres
export PGPASSWORD=postgres
export PGDATABASE=users

1. Jalankan contoh:

go run ./examples/services-users

Service akan:

• Start HTTP di port dari server.port
• Register ke Consul
• Connect ke Kafka
• Connect ke Prometheus (mock connect)
• Connect ke PostgreSQL
• Subscribe topic Kafka (kafka.topic) dan handle event user.upsert/user.created
• Terapkan rate limit dan circuit breaker di endpoint Users

Hentikan dengan Ctrl+C. Service akan deregister dari Consul dan menutup koneksi.

Catatan

• Pastikan Kafka dan Consul berjalan secara lokal atau update env/config sesuai environment.
• Anda bisa menambahkan provider lain (file logging, elasticsearch logging, jaeger, dll) sesuai kebutuhan.
• Untuk database, buat tabel:

CREATE TABLE IF NOT EXISTS users (
  id         text PRIMARY KEY,
  email      text UNIQUE NOT NULL,
  name       text NOT NULL,
  created_at timestamptz NOT NULL,
  updated_at timestamptz NOT NULL
);

• Failover: bootstrap tersedia di internal/bootstrap/failover.go. Daftarkan endpoint ke Consul agar failover dapat memilih endpoint sehat.