init ingestion

ingestion/ingest/internal/config/config.go

@@ -0,0 +1,41 @@
+// Package config loads runtime configuration from environment variables.
+//
+// All env vars are prefixed with INGEST_ except shared infra ones
+// (POSTGRES_DSN, REDIS_ADDR, KAFKA_BROKERS).
+package config
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/caarlos0/env/v11"
+)
+
+type Config struct {
+	HTTPAddr            string        `env:"INGEST_HTTP_ADDR"          envDefault:":3049"`
+	LogLevel            string        `env:"INGEST_LOG_LEVEL"          envDefault:"info"`
+	PayloadLimitKB      int           `env:"INGEST_PAYLOAD_LIMIT_KB"   envDefault:"100"`
+	BatchLimitKB        int           `env:"INGEST_BATCH_LIMIT_KB"     envDefault:"4000"`
+	LateEventHours      int           `env:"INGEST_LATE_EVENT_HOURS"   envDefault:"24"`
+	DedupTTLHours       int           `env:"INGEST_DEDUP_TTL_HOURS"    envDefault:"24"`
+	WriteKeyCacheTTL    time.Duration `env:"INGEST_WRITE_KEY_CACHE_TTL_SECONDS" envDefault:"45s"`
+	ShutdownTimeout     time.Duration `env:"INGEST_SHUTDOWN_TIMEOUT_SECONDS"    envDefault:"30s"`
+	LogPayloadOnSuccess bool          `env:"INGEST_LOG_PAYLOAD_ON_SUCCESS" envDefault:"false"`
+	LogPayloadOnError   bool          `env:"INGEST_LOG_PAYLOAD_ON_ERROR"   envDefault:"true"`
+
+	PostgresDSN string `env:"POSTGRES_DSN,required"`
+	RedisAddr   string `env:"REDIS_ADDR"  envDefault:"localhost:6379"`
+
+	KafkaBrokers     []string `env:"KAFKA_BROKERS" envSeparator:"," envDefault:"localhost:9092"`
+	KafkaTopicIngest string   `env:"KAFKA_TOPIC_INGEST" envDefault:"events.ingest"`
+	KafkaTopicDLQ    string   `env:"KAFKA_TOPIC_DLQ"    envDefault:"events.dlq"`
+	KafkaTopicRetry  string   `env:"KAFKA_TOPIC_RETRY"  envDefault:"events.retry"`
+}
+
+func Load() (*Config, error) {
+	cfg := &Config{}
+	if err := env.Parse(cfg); err != nil {
+		return nil, fmt.Errorf("config load: %w", err)
+	}
+	return cfg, nil
+}