near-lake-framework-go

It allows you to build your own indexer that subscribes to the stream of blocks from the NEAR Lake data source and create your own logic to process the NEAR Protocol data.

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How to install

go get github.com/Dmitriyhellyeah/near-lake-framework-go

Example

init config with credentials

    config := nearlake.InitDefaultTestnetConfig(131163980, 10)
    config.AWSAccessKeyId = "AKIA2M26MSLIO56JVRY5"
    config.AWSSecretAccessKey = "4Z1Mb4/QSdNkBTV8QWfckwi35EKCkXGS5VEFLhjA"
    
    nlc, err := nearlake.NewClient(config)
    if err != nil {
        log.Fatalf("error", err)
    }

init config without credentials

    config := nearlake.InitDefaultTestnetConfig(131163980, 10)

    nlc, err := nearlake.NewClientWithoutCredentials(config)
    if err != nil {
        log.Fatalf("error", err)
    }

Streamer

    config := nearlake.InitDefaultTestnetConfig(131163980, 10)
    
    nlc, err := nearlake.NewClientWithoutCredentials(config)
    
    if err != nil {
        log.Fatalf("error", err)
    }
    
    channel := nlc.Streamer()
    
    for messages := range channel {
	    for _, message := range messages {
	        log.Println("BLOCK HEIGHT", message.Block.Header.Height)
	    }
	}

Transaction Watcher & arguments decoding

    type ExampleOracle struct {
        Prices []struct {
            AssetId string `json:"asset_id"`
            Price   struct {
                Multiplier string `json:"multiplier"`
                Decimals   int    `json:"decimals"`
            } `json:"price"`
        } `json:"prices"`
    }


    config := nearlake.InitDefaultTestnetConfig(131547225, 10)
    
    nlc, err := nearlake.NewClientWithoutCredentials(config)
    
    if err != nil {
        log.Fatalf("error", err)
    }
    
    chann := nlc.TxWatcher([]string{"priceoracle.testnet"})
    
    var exampleOracle ExampleOracle
    
    for msg := range chann {
        log.Println(msg)
        msg.DecodeArgs(&exampleOracle)
        
        ll, _ := json.Marshal(exampleOracle)
        log.Println(string(ll))
    }