github.com/cryptohub-digital/blockbook-fork@v0.0.0-20230713133354-673c927af7f1/bchain/coins/xcb/cvm.go (about)

     1  package xcb
     2  
     3  import (
     4  	"context"
     5  	"math/big"
     6  
     7  	"github.com/core-coin/go-core/v2"
     8  	"github.com/core-coin/go-core/v2/common"
     9  	"github.com/core-coin/go-core/v2/core/types"
    10  	"github.com/core-coin/go-core/v2/rpc"
    11  	"github.com/core-coin/go-core/v2/xcbclient"
    12  	"github.com/cryptohub-digital/blockbook-fork/bchain"
    13  )
    14  
    15  // CoreblockchainClient wraps a client to implement the CVMClient interface
    16  type CoreblockchainClient struct {
    17  	*xcbclient.Client
    18  }
    19  
    20  // HeaderByNumber returns a block header that implements the CVMHeader interface
    21  func (c *CoreblockchainClient) HeaderByNumber(ctx context.Context, number *big.Int) (CVMHeader, error) {
    22  	h, err := c.Client.HeaderByNumber(ctx, number)
    23  	if err != nil {
    24  		return nil, err
    25  	}
    26  
    27  	return &CoreCoinHeader{Header: h}, nil
    28  }
    29  
    30  // EstimateEnergy returns the current estimated energy cost for executing a transaction
    31  func (c *CoreblockchainClient) EstimateEnergy(ctx context.Context, msg interface{}) (uint64, error) {
    32  	return c.Client.EstimateEnergy(ctx, msg.(core.CallMsg))
    33  }
    34  
    35  // BalanceAt returns the balance for the given account at a specific block, or latest known block if no block number is provided
    36  func (c *CoreblockchainClient) BalanceAt(ctx context.Context, addrDesc bchain.AddressDescriptor, blockNumber *big.Int) (*big.Int, error) {
    37  	return c.Client.BalanceAt(ctx, common.BytesToAddress(addrDesc), blockNumber)
    38  }
    39  
    40  // NonceAt returns the nonce for the given account at a specific block, or latest known block if no block number is provided
    41  func (c *CoreblockchainClient) NonceAt(ctx context.Context, addrDesc bchain.AddressDescriptor, blockNumber *big.Int) (uint64, error) {
    42  	return c.Client.NonceAt(ctx, common.BytesToAddress(addrDesc), blockNumber)
    43  }
    44  
    45  // CoreCoinRPCClient wraps an rpc client to implement the CVMRPCClient interface
    46  type CoreCoinRPCClient struct {
    47  	*rpc.Client
    48  }
    49  
    50  // XcbSubscribe subscribes to events and returns a client subscription that implements the EVMClientSubscription interface
    51  func (c *CoreCoinRPCClient) XcbSubscribe(ctx context.Context, channel interface{}, args ...interface{}) (CVMClientSubscription, error) {
    52  	sub, err := c.Client.XcbSubscribe(ctx, channel, args...)
    53  	if err != nil {
    54  		return nil, err
    55  	}
    56  
    57  	return &CoreCoinClientSubscription{ClientSubscription: sub}, nil
    58  }
    59  
    60  // CoreCoinHeader wraps a block header to implement the CVMHeader interface
    61  type CoreCoinHeader struct {
    62  	*types.Header
    63  }
    64  
    65  // Hash returns the block hash as a hex string
    66  func (h *CoreCoinHeader) Hash() string {
    67  	return h.Header.Hash().Hex()
    68  }
    69  
    70  // Number returns the block number
    71  func (h *CoreCoinHeader) Number() *big.Int {
    72  	return h.Header.Number
    73  }
    74  
    75  // Difficulty returns the block difficulty
    76  func (h *CoreCoinHeader) Difficulty() *big.Int {
    77  	return h.Header.Difficulty
    78  }
    79  
    80  // CoreCoinHash wraps a transaction hash to implement the CVMHash interface
    81  type CoreCoinHash struct {
    82  	common.Hash
    83  }
    84  
    85  // CoreCoinClientSubscription wraps a client subcription to implement the CVMClientSubscription interface
    86  type CoreCoinClientSubscription struct {
    87  	*rpc.ClientSubscription
    88  }
    89  
    90  // CoreCoinNewBlock wraps a block header channel to implement the CVMNewBlockSubscriber interface
    91  type CoreCoinNewBlock struct {
    92  	channel chan *types.Header
    93  }
    94  
    95  // NewCoreCoinNewBlock returns an initialized CoreCoinNewBlock struct
    96  func NewCoreCoinNewBlock() *CoreCoinNewBlock {
    97  	return &CoreCoinNewBlock{channel: make(chan *types.Header)}
    98  }
    99  
   100  // Channel returns the underlying channel as an empty interface
   101  func (s *CoreCoinNewBlock) Channel() interface{} {
   102  	return s.channel
   103  }
   104  
   105  // Read from the underlying channel and return a block header that implements the CVMHeader interface
   106  func (s *CoreCoinNewBlock) Read() (CVMHeader, bool) {
   107  	h, ok := <-s.channel
   108  	return &CoreCoinHeader{Header: h}, ok
   109  }
   110  
   111  // Close the underlying channel
   112  func (s *CoreCoinNewBlock) Close() {
   113  	close(s.channel)
   114  }
   115  
   116  // CoreCoinNewTx wraps a transaction hash channel to implement the CVMNewTxSubscriber interface
   117  type CoreCoinNewTx struct {
   118  	channel chan common.Hash
   119  }
   120  
   121  // NewCoreCoinNewTx returns an initialized CoreCoinNewTx struct
   122  func NewCoreCoinNewTx() *CoreCoinNewTx {
   123  	return &CoreCoinNewTx{channel: make(chan common.Hash)}
   124  }
   125  
   126  // Channel returns the underlying channel as an empty interface
   127  func (s *CoreCoinNewTx) Channel() interface{} {
   128  	return s.channel
   129  }
   130  
   131  // Read from the underlying channel and return a transaction hash that implements the CVMHash interface
   132  func (s *CoreCoinNewTx) Read() (CVMHash, bool) {
   133  	h, ok := <-s.channel
   134  	return &CoreCoinHash{Hash: h}, ok
   135  }
   136  
   137  // Close the underlying channel
   138  func (s *CoreCoinNewTx) Close() {
   139  	close(s.channel)
   140  }