Crypto.com Chain Indexing Service

Crypto.com Chain Indexing Service (chain-indexing) is a service to index all publicly available data on Crypto.com chain and persist structured information into storage.

Right now it supports Postgres database and provides RESTful API as query interface.

1. Usage

package main

import (
	"os"

	applogger "github.com/crypto-com/chain-indexing/external/logger"
	"github.com/crypto-com/chain-indexing/bootstrap"
	"github.com/crypto-com/chain-indexing/infrastructure"
	"github.com/crypto-com/chain-indexing/entity/projection"
)

func main() {
	// Init configurations...
	logger := infrastructure.NewZerologLogger(os.Stdout)
	fileConfig := bootstrap.FileConfig{}
	config := bootstrap.Config{
		FileConfig: fileConfig,
	}

	// Init indexing app
	app := bootstrap.NewApp(logger, &config)
	app.InitIndexService(
		initProjections(logger, &config),
		initCronJobs(logger, &config),
	)
	app.InitHTTPAPIServer(initRouteRegistry(logger, &config))

	// Run indexing app
	app.Run()
}

func initProjections(
	logger applogger.Logger,
	config *bootstrap.Config,
) []projection.Projection {
    // append your Projections
}


func initCronJobs(
	logger applogger.Logger,
	config *bootstrap.Config,
) []projection.CronJob {
	// append your CronJobs
}

func initRouteRegistry(
	logger applogger.Logger,
	config *bootstrap.Config,
) bootstrap.RouteRegistry {
	// append your Routes
}

Configuration

config := bootstrap.Config{
    FileConfig: bootstrap.FileConfig{
        Blockchain: bootstrap.BlockchainConfig{
            // Bonding denom of the blockchain
            BondingDenom:           "",
            // Account address prefix of the blockchain
            AccountAddressPrefix:   "",
            // Account public key prefix of the blockchain
            AccountPubKeyPrefix:    "",
            // Validator address prefix of the blockchain
            ValidatorAddressPrefix: "",
            // Validator public key prefix of the blockchain
            ValidatorPubKeyPrefix:  "",
        },
        System: bootstrap.SystemConfig{
            // "EVENT_STORE", "TENDERMINT_DIRECT", "API_ONLY"
            Mode: "",
        },
        Sync: bootstrap.SyncConfig{
            // Window size of Sunc process
            WindowSize: 0,
        },
        Tendermint: bootstrap.TendermintConfig{
            // HTTP address of Tendermint client
            HTTPRPCUrl:           "",
            // Connection type
            Insecure:             false,
            StrictGenesisParsing: false,
        },
        CosmosApp: bootstrap.CosmosAppConfig{
            // HTTP address of Cosmos app client
            HTTPRPCUrl: "",
            // Connection type
            Insecure:   false,
        },
        HTTP: bootstrap.HTTPConfig{
            // HTTP address to be listened
            ListeningAddress:   "",
            // Prefix of all routes
            RoutePrefix:        "",
            // Allowed CORS for Origins
            CorsAllowedOrigins: nil,
            // Allowed CORS for Methods
            CorsAllowedMethods: nil,
            // Allowed CORS for Headers
            CorsAllowedHeaders: nil,
        },
        Debug: bootstrap.DebugConfig{
            // Enable pprof server
            PprofEnable:           false,
            // Pprof server address to be listened
            PprofListeningAddress: "",
        },
        Database: bootstrap.DatabaseConfig{
            // Connection type
            SSL:      false,
            // Database host
            Host:     "",
            // Database port
            Port:     0,
            // Database username
            Username: "",
            // Database password
            Password: "",
            // Database name
            Name:     "",
            // Database schema name
            Schema:   "",
        },
        Postgres: bootstrap.PostgresConfig{
            // Max connections of Database
            MaxConns:            0,
            // Min connections of Database
            MinConns:            0,
            // Max connections life time of Database
            MaxConnLifeTime:     "",
            // Max connections idle time of Database
            MaxConnIdleTime:     "",
            // Health check interval of Database
            HealthCheckInterval: "",
        },
        Logger: bootstrap.LoggerConfig{
            // LOG_LEVEL_DEBUG, LOG_LEVEL_INFO, LOG_LEVEL_ERROR, LOG_LEVEL_PANIC, LOG_DISABLED
            Level: (logger.LogLevel),
            // Enable colered logs
            Color: false,
        },
        CosmosVersionEnabledHeight: bootstrap.CosmosVersionEnabledHeightConfig{
            // BLock height from cosmos sdk version v0.42.7
            V0_42_7: 0,
        },
}

2. Test

./test.sh [--install-dependency] [--no-db] [--watch]

Providing --install-dependency will attempt to install test runner Ginkgo if it is not installed before.

3. Lint

With Local Installed golangci-lint

Prerequisite

• golangci-lint

./lint.sh

With Docker

docker run --rm -v $(pwd):/app -w /app golangci/golangci-lint:v1.33 golangci-lint run -v

4. Contributing

Please abide by the Code of Conduct in all interactions, and the contributing guidelines when submitting code.

5. License

Apache 2.0