viem-goviem-go

createBlockFilter

Creates a filter to listen for new blocks

Import

Import the public actions package so you can call this action.

import "github.com/ChefBingbong/viem-go/actions/public"

Usage

A minimal example showing how to construct a public client and create a block filter.

import (
  "context"
  "log"


  "github.com/ChefBingbong/viem-go/actions/public"
  "github.com/ChefBingbong/viem-go/client"
  "github.com/ChefBingbong/viem-go/client/transport"
  "github.com/ChefBingbong/viem-go/chain/definitions"
)


ctx := context.Background()


publicClient, err := client.CreatePublicClient(client.PublicClientConfig{
  Chain:     definitions.Mainnet,
  Transport: transport.HTTP("https://eth.llamarpc.com"),
})
if err != nil {
  log.Fatal(err)
}
defer func() { _ = publicClient.Close() }()


filter, err := public.CreateBlockFilter(ctx, publicClient)
if err != nil {
  log.Fatal(err)
}


// Use filter.ID with GetFilterChanges to get new block hashes
changes, err := public.GetFilterChanges(ctx, publicClient, public.GetFilterChangesParameters{
  FilterID: filter.ID,
})

Returns

*CreateBlockFilterReturnType

A filter object containing:

  • ID FilterID - The filter identifier
  • Type string - Always "block" for block filters

Parameters

This action takes no parameters.

JSON-RPC Method

eth_newBlockFilter