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Fix block file, error handling

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This commit is contained in:
Mononaut 2021-03-30 17:24:44 -06:00
parent e293307975
commit aa2ba1c03c
3 changed files with 35 additions and 47 deletions
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2
lib/bridge.ex
View File

@ -95,7 +95,7 @@ defmodule BitcoinStream.Bridge do
[_topic, payload, _size] = message;
# keep last block on disk for preloading
:ok = File.write("block.dat", payload, [:append, :binary])
:ok = File.write("block.dat", payload, [:binary])
case BitcoinBlock.decode(payload) do
{:ok, block} ->

45
lib/protocol/block.ex
View File

@ -26,25 +26,32 @@ defstruct [
]
def decode(block_binary) do
bytes = byte_size(block_binary)
hex = Base.encode16(block_binary, case: :lower);
{:ok, raw_block} = Bitcoinex.Block.decode(hex)
id = Bitcoinex.Block.block_id(block_binary)
{summarised_txns, total_value} = summarise_txns(raw_block.txns)
{:ok, %__MODULE__{
version: raw_block.version,
prev_block: raw_block.prev_block,
merkle_root: raw_block.merkle_root,
timestamp: raw_block.timestamp,
bits: raw_block.bits,
bytes: bytes,
txn_count: raw_block.txn_count,
txns: summarised_txns,
value: total_value,
id: id
}}
with bytes <- byte_size(block_binary),
hex <- Base.encode16(block_binary, case: :lower),
{:ok, raw_block} <- Bitcoinex.Block.decode(hex),
id <- Bitcoinex.Block.block_id(block_binary),
{summarised_txns, total_value} <- summarise_txns(raw_block.txns)
do
{:ok, %__MODULE__{
version: raw_block.version,
prev_block: raw_block.prev_block,
merkle_root: raw_block.merkle_root,
timestamp: raw_block.timestamp,
bits: raw_block.bits,
bytes: bytes,
txn_count: raw_block.txn_count,
txns: summarised_txns,
value: total_value,
id: id
}}
else
{:error, reason} ->
IO.puts("Error decoding data for BitcoinBlock: #{reason}")
:error
_ ->
IO.puts("Error decoding data for BitcoinBlock: (unknown reason)")
:error
end
end
defp summarise_txns(txns) do

35
lib/socket_handler.ex
View File

@ -15,36 +15,17 @@ defmodule BitcoinStream.SocketHandler do
end
def load_block() do
case File.read("block.dat") do
{:ok, blockData } ->
case BitcoinBlock.decode(blockData) do
{:ok, block} ->
IO.puts('file decoded ok')
case Jason.encode(%{type: "block", block: block}) do
{:ok, payload} ->
IO.puts("block encoded ok");
{ :ok, payload };
{:error, reason} ->
IO.puts("Error json encoding block: #{reason}");
:error
_ ->
IO.puts("json encoding failed: (unknown reason)")
:error
end
{:error, reason} ->
IO.puts("Block decoding failed: #{reason}");
:error
_ ->
IO.puts("Block decoding failed: (unknown reason)")
:error
end
with {:ok, blockData} <- File.read("block.dat"),
{:ok, block} <- BitcoinBlock.decode(blockData),
{:ok, payload} <- Jason.encode(%{type: "block", block: block})
do
{:ok, payload}
else
{:error, reason} ->
IO.puts("Reading block file failed: #{reason}");
IO.puts("Block decoding failed: #{reason}");
:error
_ ->
IO.puts("Reading block file failed (unknown reason)")
IO.puts("Block decoding failed: (unknown reason)");
:error
end
end