Params gRPC Method

Parameters

This method does not accept any parameters

Returns

params

object

Returns module parameters related to blob gas cost and maximum square size

gas_per_blob_byte

integer

The amount of gas charged per byte of blob data

gov_max_square_size

integer

The maximum square size allowed for data availability sampling, as set by governance

Request

package main

import (
	"context"
	"crypto/tls"
	"encoding/json"
	"fmt"
	"log"
	"time"

	"google.golang.org/grpc"
	"google.golang.org/grpc/credentials"

	blobtypes "celestia-grpc/celestia/blob/v1"
)

// QuickNode endpoints consist of two crucial components: the endpoint name and the corresponding token
// For eg: QN Endpoint: https://docs-demo.celestia-mainnet.quiknode.pro/abcde123456789
// endpoint will be: docs-demo.celestia-mainnet.quiknode.pro:9090  {9090 is the port number for Celestia gRPC}
// token will be : abcde123456789

var token = "YOUR_TOKEN"
var endpoint = "YOUR_ENDPOINT:9090"

type auth struct {
	token string
}

func (a *auth) GetRequestMetadata(ctx context.Context, uri ...string) (map[string]string, error) {
	return map[string]string{
		"x-token": a.token,
	}, nil
}

func (a *auth) RequireTransportSecurity() bool {
	return false
}

func main() {
	opts := []grpc.DialOption{
		grpc.WithTransportCredentials(credentials.NewTLS(&tls.Config{})),
		grpc.WithPerRPCCredentials(&auth{token}),
	}

	// Create gRPC connection
	conn, err := grpc.Dial(endpoint, opts...)
	if err != nil {
		log.Fatalf("Failed to connect to Celestia gRPC server: %v", err)
	}
	defer conn.Close()

	client := blobtypes.NewQueryClient(conn)

	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()

	resp, err := client.Params(ctx, &blobtypes.QueryParamsRequest{})
	if err != nil {
		log.Fatalf("Failed to query blob parameters: %v", err)
	}

	jsonData, err := json.MarshalIndent(resp.Params, "", "  ")
	if err != nil {
		log.Printf("Error converting to JSON: %v", err)
	} else {
		fmt.Println("\nOutput:")
		fmt.Println(string(jsonData))
	}
}

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