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Merge pull request #32 from nyagamunene/PROP-27
PROP-27 - Implement Registry proxy
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| Original file line number | Diff line number | Diff line change |
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| @@ -1,2 +1,3 @@ | ||
| # Propellerd Build | ||
| build | ||
| config.toml |
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@@ -33,6 +33,7 @@ linters: | |
| - err113 | ||
| - noctx | ||
| - cyclop | ||
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| linters-settings: | ||
| gocritic: | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,111 @@ | ||
| package main | ||
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| import ( | ||
| "context" | ||
| "fmt" | ||
| "log" | ||
| "log/slog" | ||
| "os" | ||
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| "github.com/absmach/propeller/proxy" | ||
| "github.com/caarlos0/env/v11" | ||
| "golang.org/x/sync/errgroup" | ||
| ) | ||
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| const svcName = "proxy" | ||
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| type config struct { | ||
| LogLevel string `env:"PROXY_LOG_LEVEL" envDefault:"info"` | ||
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| BrokerURL string `env:"PROPLET_MQTT_ADDRESS" envDefault:"tcp://localhost:1883"` | ||
| PropletKey string `env:"PROPLET_THING_KEY,notEmpty"` | ||
| PropletID string `env:"PROPLET_THING_ID,notEmpty" ` | ||
| ChannelID string `env:"PROPLET_CHANNEL_ID,notEmpty"` | ||
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| ChunkSize int `env:"PROXY_CHUNK_SIZE" envDefault:"512000"` | ||
| Authenticate bool `env:"PROXY_AUTHENTICATE" envDefault:"false"` | ||
| Token string `env:"PROXY_REGISTRY_TOKEN" envDefault:""` | ||
| Username string `env:"PROXY_REGISTRY_USERNAME" envDefault:""` | ||
| Password string `env:"PROXY_REGISTRY_PASSWORD" envDefault:""` | ||
| RegistryURL string `env:"PROXY_REGISTRY_URL,notEmpty"` | ||
| } | ||
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| func main() { | ||
| g, ctx := errgroup.WithContext(context.Background()) | ||
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| cfg := config{} | ||
| if err := env.Parse(&cfg); err != nil { | ||
| log.Fatalf("failed to load configuration : %s", err.Error()) | ||
| } | ||
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| var level slog.Level | ||
| if err := level.UnmarshalText([]byte(cfg.LogLevel)); err != nil { | ||
| log.Fatalf("failed to parse log level: %s", err.Error()) | ||
| } | ||
| logHandler := slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{ | ||
| Level: level, | ||
| }) | ||
| logger := slog.New(logHandler) | ||
| slog.SetDefault(logger) | ||
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| mqttCfg := proxy.MQTTProxyConfig{ | ||
| BrokerURL: cfg.BrokerURL, | ||
| Password: cfg.PropletKey, | ||
| PropletID: cfg.PropletID, | ||
| ChannelID: cfg.ChannelID, | ||
| } | ||
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| httpCfg := proxy.HTTPProxyConfig{ | ||
| ChunkSize: cfg.ChunkSize, | ||
| Authenticate: cfg.Authenticate, | ||
| Token: cfg.Token, | ||
| Username: cfg.Username, | ||
| Password: cfg.Password, | ||
| RegistryURL: cfg.RegistryURL, | ||
| } | ||
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| logger.Info("successfully initialized MQTT and HTTP config") | ||
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| service, err := proxy.NewService(ctx, &mqttCfg, &httpCfg, logger) | ||
| if err != nil { | ||
| logger.Error("failed to create proxy service", slog.Any("error", err)) | ||
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| return | ||
| } | ||
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| logger.Info("starting proxy service") | ||
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| if err := start(ctx, g, service); err != nil { | ||
| logger.Error(fmt.Sprintf("%s service exited with error: %s", svcName, err)) | ||
| } | ||
| } | ||
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| func start(ctx context.Context, g *errgroup.Group, s *proxy.ProxyService) error { | ||
| if err := s.MQTTClient().Connect(ctx); err != nil { | ||
| return fmt.Errorf("failed to connect to MQTT broker: %w", err) | ||
| } | ||
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| slog.Info("successfully connected to broker") | ||
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| defer func() { | ||
| if err := s.MQTTClient().Disconnect(ctx); err != nil { | ||
| slog.Error("failed to disconnect MQTT client", "error", err) | ||
| } | ||
| }() | ||
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| if err := s.MQTTClient().Subscribe(ctx, s.ContainerChan()); err != nil { | ||
| return fmt.Errorf("failed to subscribe to container requests: %w", err) | ||
| } | ||
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| slog.Info("successfully subscribed to topic") | ||
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| g.Go(func() error { | ||
| return s.StreamHTTP(ctx) | ||
| }) | ||
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| g.Go(func() error { | ||
| return s.StreamMQTT(ctx) | ||
| }) | ||
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| return g.Wait() | ||
| } |
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