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* Refactor * Handle connection drops and reconnect * Increase verbosity * Fix config file path * Fix readme * Add interval * Write and read feeds by ticker * Rename daemon to client * Add comment to explain kraken feeder code
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,70 +1,85 @@ | ||
| // Copyright (c) 2020 The VulpemVentures developers | ||
|
|
||
| // Feeder allows to connect an external price feed to the TDex Daemon to determine the current market price. | ||
| package main | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "io/ioutil" | ||
| "os" | ||
| "os/signal" | ||
| "syscall" | ||
|
|
||
| log "github.com/sirupsen/logrus" | ||
| "github.com/tdex-network/tdex-feeder/config" | ||
| "github.com/tdex-network/tdex-feeder/internal/adapters" | ||
| "github.com/tdex-network/tdex-feeder/internal/application" | ||
| ) | ||
|
|
||
| func main() { | ||
| // Interrupt Notification. | ||
| interrupt := make(chan os.Signal, 1) | ||
| signal.Notify(interrupt, syscall.SIGTERM, syscall.SIGINT) | ||
|
|
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| // retrieve feeder service from config file | ||
| feeder := configFileToFeederService(config.GetConfigPath()) | ||
| "github.com/tdex-network/tdex-feeder/internal/config" | ||
| "github.com/tdex-network/tdex-feeder/internal/core/application" | ||
| grpcclient "github.com/tdex-network/tdex-feeder/internal/core/infrastructure/client/grpc" | ||
| krakenfeeder "github.com/tdex-network/tdex-feeder/internal/core/infrastructure/feeder/kraken" | ||
| "github.com/tdex-network/tdex-feeder/internal/core/ports" | ||
| ) | ||
|
|
||
| log.Info("Start the feeder...") | ||
| go func() { | ||
| err := feeder.Start() | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| }() | ||
| type indexedPriceFeeders map[string]func(args ...interface{}) (ports.PriceFeeder, error) | ||
|
|
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| // check for interupt | ||
| <-interrupt | ||
| log.Info("Shutting down the feeder...") | ||
| err := feeder.Stop() | ||
| log.Info("Feeder service stopped") | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| func (i indexedPriceFeeders) supported() []string { | ||
| keys := make([]string, 0, len(i)) | ||
| for k := range i { | ||
| keys = append(keys, k) | ||
| } | ||
| os.Exit(0) | ||
| return keys | ||
| } | ||
|
|
||
| func configFileToFeederService(configFilePath string) application.FeederService { | ||
| jsonFile, err := os.Open(configFilePath) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| var ( | ||
| priceFeeders = indexedPriceFeeders{ | ||
| "kraken": krakenfeeder.NewKrakenPriceFeeder, | ||
| } | ||
| defer jsonFile.Close() | ||
| ) | ||
|
|
||
| configBytes, err := ioutil.ReadAll(jsonFile) | ||
| func main() { | ||
| cfg, err := config.NewConfigFromFile() | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| log.WithError(err).Fatalf( | ||
| "error while reading config from file %s", config.GetConfigPath(), | ||
| ) | ||
| } | ||
|
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| config := &adapters.Config{} | ||
| err = json.Unmarshal(configBytes, config) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| priceFeederFactory, ok := priceFeeders[cfg.PriceFeeder] | ||
| if !ok { | ||
| log.Fatalf( | ||
| "price feeder must be one of: '%s'", priceFeeders.supported(), | ||
| ) | ||
| } | ||
|
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| feeder, err := config.ToFeederService() | ||
| priceFeeder, err := priceFeederFactory(cfg.Interval, cfg.PortableMarkets()) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| log.WithError(err).Fatal("error while initializing price feeder") | ||
| } | ||
|
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| indexedTargets := make(application.IndexedTargetsByMarket) | ||
| for _, mkt := range cfg.Markets { | ||
| targets := make(map[string]ports.TdexClient) | ||
| for _, t := range mkt.CTargets { | ||
| target, err := grpcclient.NewGRPCClient(t.RPCAddress, t.MacaroonsPath, t.TLSCertPath) | ||
| if err != nil { | ||
| log.WithError(err).Fatalf( | ||
| "error while connecting with target %s", t.RPCAddress, | ||
| ) | ||
| } | ||
| targets[target.RPCAddress()] = target | ||
| } | ||
| mktKey := ports.MarketKey(mkt) | ||
| indexedTargets[mktKey] = targets | ||
| } | ||
|
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| return feeder | ||
| app := application.NewService(priceFeeder, indexedTargets) | ||
|
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| defer app.Stop() | ||
|
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| log.Info("starting service") | ||
| go func() { | ||
| if err := app.Start(); err != nil { | ||
| log.WithError(err).Fatal("service exited with error") | ||
| } | ||
| }() | ||
|
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| sigChan := make(chan os.Signal, 1) | ||
| signal.Notify(sigChan, syscall.SIGTERM, syscall.SIGINT) | ||
| <-sigChan | ||
|
|
||
| log.Info("shutting down") | ||
| } |
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