cacto
81040eec62
Все три Go-сервиса (ingest, device-control, rule-engine) отдают /metrics в формате Prometheus: счётчики MQTT/RabbitMQ/ClickHouse операций, гистограммы длительности батч-флашей и диспатча правил, переходы устройств online/offline. Добавлены сервисы prometheus и grafana в docker-compose с провижининг конфигом (datasource + два готовых дашборда: "Ingest & Telemetry" и "Automation & Devices").
90 lines
1.9 KiB
Go
90 lines
1.9 KiB
Go
// Package config loads rule-engine-service settings from environment
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// variables, matching the names used in the repo-root .env.example.
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package config
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import (
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"fmt"
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"os"
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"strconv"
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"time"
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)
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type Config struct {
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PostgresDSN string
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DeviceControlGRPCTarget string
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RabbitMQURL string
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RuleCacheRefreshInterval time.Duration
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MetricsPort int
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}
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func Load() (Config, error) {
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cfg := Config{
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PostgresDSN: fmt.Sprintf("postgres://%s:%s@%s:%s/%s",
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getEnv("POSTGRES_USER", "home_automation"),
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getEnv("POSTGRES_PASSWORD", ""),
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getEnv("POSTGRES_HOST", "localhost"),
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getEnv("POSTGRES_PORT", "5432"),
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getEnv("POSTGRES_DB", "home_automation"),
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),
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DeviceControlGRPCTarget: fmt.Sprintf("%s:%s",
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getEnv("DEVICE_CONTROL_HOST", "localhost"),
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getEnv("DEVICE_CONTROL_GRPC_PORT", "50051"),
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),
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RabbitMQURL: fmt.Sprintf("amqp://%s:%s@%s:%s/",
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getEnv("RABBITMQ_USER", "guest"),
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getEnv("RABBITMQ_PASSWORD", "guest"),
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getEnv("RABBITMQ_HOST", "localhost"),
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getEnv("RABBITMQ_PORT", "5672"),
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),
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}
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interval, err := getEnvDuration("RULE_ENGINE_CACHE_REFRESH_INTERVAL", 15*time.Second)
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if err != nil {
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return Config{}, err
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}
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cfg.RuleCacheRefreshInterval = interval
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if cfg.MetricsPort, err = getEnvInt("RULE_ENGINE_METRICS_PORT", 9102); err != nil {
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return Config{}, err
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}
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return cfg, nil
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}
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func getEnv(key, fallback string) string {
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if v := os.Getenv(key); v != "" {
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return v
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}
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return fallback
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}
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func getEnvInt(key string, fallback int) (int, error) {
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v := os.Getenv(key)
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if v == "" {
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return fallback, nil
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}
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n, err := strconv.Atoi(v)
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if err != nil {
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return 0, fmt.Errorf("%s: %w", key, err)
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}
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return n, nil
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}
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func getEnvDuration(key string, fallback time.Duration) (time.Duration, error) {
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v := os.Getenv(key)
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if v == "" {
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return fallback, nil
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}
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d, err := time.ParseDuration(v)
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if err != nil {
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return 0, fmt.Errorf("%s: %w", key, err)
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}
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return d, nil
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}
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