Don't rebase them out, so that we have the history that we tried to use `socket` and `websockex`, but we couldn't get them to work.pull/572/head
Luke Imhoff
6 years ago
committed by
Luke Imhoff
parent
72bd8d7c68
commit
9a4a23b5c5
@ -1,338 +0,0 @@ |
||||
defmodule EthereumJSONRPC.WebSocket.Socket do |
||||
@moduledoc """ |
||||
Implements `EthereumJSONRPC.WebSocket` using `Socket.Web`. |
||||
""" |
||||
|
||||
use GenServer |
||||
|
||||
require Logger |
||||
|
||||
import EthereumJSONRPC, only: [request: 1] |
||||
|
||||
alias EthereumJSONRPC.{Subscription, Transport, WebSocket} |
||||
alias EthereumJSONRPC.WebSocket.Registration |
||||
alias EthereumJSONRPC.WebSocket.Socket.Receiver |
||||
|
||||
@behaviour WebSocket |
||||
|
||||
@enforce_keys ~w(receiver socket_web url)a |
||||
defstruct receiver: nil, |
||||
request_id_to_registration: %{}, |
||||
socket_web: nil, |
||||
subscription_id_to_subscription: %{}, |
||||
url: nil |
||||
|
||||
@type t :: %__MODULE__{ |
||||
receiver: pid(), |
||||
request_id_to_registration: %{non_neg_integer() => Registration.t()}, |
||||
socket_web: Socket.Web.t(), |
||||
subscription_id_to_subscription: %{Subscription.id() => Subscription.t()}, |
||||
url: String.t() |
||||
} |
||||
|
||||
# Supervisor interface |
||||
|
||||
@impl WebSocket |
||||
# only allow secure WSS |
||||
def start_link(["wss://" <> _ = url, gen_server_options]) when is_list(gen_server_options) do |
||||
GenServer.start_link(__MODULE__, url, gen_server_options) |
||||
end |
||||
|
||||
# Client interface |
||||
|
||||
@impl WebSocket |
||||
@spec json_rpc(WebSocket.web_socket(), Transport.request()) :: {:ok, Transport.result()} | {:error, reason :: term()} |
||||
def json_rpc(web_socket, request) do |
||||
GenServer.call(web_socket, {:json_rpc, request}) |
||||
end |
||||
|
||||
@impl WebSocket |
||||
@spec subscribe(WebSocket.web_socket(), Subscription.event(), Subscription.params()) :: |
||||
{:ok, Subscription.t()} | {:error, reason :: term()} |
||||
def subscribe(web_socket, event, params) when is_binary(event) and is_list(params) do |
||||
GenServer.call(web_socket, {:subscribe, event, params}) |
||||
end |
||||
|
||||
@impl WebSocket |
||||
@spec unsubscribe(WebSocket.web_socket(), Subscription.t()) :: :ok | {:error, :not_found} |
||||
def unsubscribe(web_socket, %Subscription{} = subscription) do |
||||
GenServer.call(web_socket, {:unsubscribe, subscription}) |
||||
end |
||||
|
||||
@impl GenServer |
||||
def init("wss://" <> _ = url) do |
||||
uri = URI.parse(url) |
||||
address = uri_to_address(uri) |
||||
|
||||
options = |
||||
options_put_uri( |
||||
[ |
||||
authorities: [path: :certifi.cacertfile()], |
||||
partial_chain: &partial_chain/1, |
||||
secure: true, |
||||
server_name: uri.host, |
||||
verify: [function: &:ssl_verify_hostname.verify_fun/3, data: [check_hostname: String.to_charlist(uri.host)]] |
||||
], |
||||
uri |
||||
) |
||||
|
||||
case Socket.Web.connect(address, options) do |
||||
{:ok, socket_web} -> |
||||
receiver = Receiver.spawn_link(%{parent: self(), socket_web: socket_web}) |
||||
{:ok, %__MODULE__{receiver: receiver, socket_web: socket_web, url: url}} |
||||
|
||||
{:error, reason} -> |
||||
{:stop, reason} |
||||
end |
||||
end |
||||
|
||||
@impl GenServer |
||||
def handle_call(message, from, %__MODULE__{socket_web: socket_web} = state) do |
||||
{updated_state, unique_request} = register(message, from, state) |
||||
|
||||
Socket.Web.send(socket_web, {:text, Jason.encode!(unique_request)}) |
||||
|
||||
{:noreply, updated_state} |
||||
end |
||||
|
||||
@impl GenServer |
||||
def handle_cast({:text, text}, %__MODULE__{} = state) do |
||||
case Jason.decode(text) do |
||||
{:ok, json} -> |
||||
handle_response(json, state) |
||||
|
||||
{:error, _} = error -> |
||||
broadcast(error, state) |
||||
{:noreply, state} |
||||
end |
||||
end |
||||
|
||||
def handle_cast(:close = close, %__MODULE__{} = state) do |
||||
broadcast({:error, close}, state) |
||||
end |
||||
|
||||
def handle_cast({:close, _code, _data} = close, %__MODULE__{} = state) do |
||||
broadcast({:error, close}, state) |
||||
end |
||||
|
||||
def handle_cast({:error, _reason} = error, %__MODULE__{} = state) do |
||||
broadcast(error, state) |
||||
end |
||||
|
||||
defp broadcast(message, %__MODULE__{subscription_id_to_subscription: id_to_subscription}) do |
||||
id_to_subscription |
||||
|> Map.values() |
||||
|> Subscription.broadcast(message) |
||||
end |
||||
|
||||
defp handle_response( |
||||
%{"method" => "eth_subscription", "params" => %{"result" => result, "subscription" => subscription_id}}, |
||||
%__MODULE__{subscription_id_to_subscription: subscription_id_to_subscription} = state |
||||
) do |
||||
case subscription_id_to_subscription do |
||||
%{^subscription_id => subscription} -> |
||||
Subscription.publish(subscription, {:ok, result}) |
||||
|
||||
_ -> |
||||
Logger.error(fn -> |
||||
[ |
||||
"Unexpected `eth_subscription` subscription ID (", |
||||
inspect(subscription_id), |
||||
") result (", |
||||
inspect(result), |
||||
"). Subscription ID not in known subscription IDs (", |
||||
subscription_id_to_subscription |
||||
|> Map.values() |
||||
|> Enum.map(&inspect/1), |
||||
")." |
||||
] |
||||
end) |
||||
end |
||||
|
||||
{:noreply, state} |
||||
end |
||||
|
||||
defp handle_response( |
||||
%{"id" => id} = response, |
||||
%__MODULE__{request_id_to_registration: request_id_to_registration} = state |
||||
) do |
||||
{registration, new_request_id_to_registration} = Map.pop(request_id_to_registration, id) |
||||
respond_to_registration(registration, new_request_id_to_registration, response, state) |
||||
end |
||||
|
||||
defp handle_response(response, %__MODULE__{} = state) do |
||||
Logger.error(fn -> |
||||
[ |
||||
"Unexpected JSON response from web socket\n", |
||||
"\n", |
||||
" Response:\n", |
||||
" ", |
||||
inspect(response) |
||||
] |
||||
end) |
||||
|
||||
{:noreply, state} |
||||
end |
||||
|
||||
defp options_put_uri(options, %URI{path: nil}), do: options |
||||
|
||||
defp options_put_uri(options, %URI{path: path}) when is_binary(path) do |
||||
Keyword.put(options, :path, path) |
||||
end |
||||
|
||||
defp partial_chain(certs) do |
||||
raise "BBOOM: #{inspect(certs)}" |
||||
end |
||||
|
||||
defp register( |
||||
{:json_rpc, original_request}, |
||||
from, |
||||
%__MODULE__{request_id_to_registration: request_id_to_registration} = state |
||||
) do |
||||
unique_id = unique_request_id(state) |
||||
|
||||
{%__MODULE__{ |
||||
state |
||||
| request_id_to_registration: |
||||
Map.put(request_id_to_registration, unique_id, %Registration{ |
||||
from: from, |
||||
type: :json_rpc |
||||
}) |
||||
}, %{original_request | id: unique_id}} |
||||
end |
||||
|
||||
defp register( |
||||
{:subscribe, event, params}, |
||||
from, |
||||
%__MODULE__{request_id_to_registration: request_id_to_registration} = state |
||||
) |
||||
when is_binary(event) and is_list(params) do |
||||
unique_id = unique_request_id(state) |
||||
|
||||
{ |
||||
%__MODULE__{ |
||||
state |
||||
| request_id_to_registration: |
||||
Map.put(request_id_to_registration, unique_id, %Registration{from: from, type: :subscribe}) |
||||
}, |
||||
request(%{id: unique_id, method: "eth_subscribe", params: [event | params]}) |
||||
} |
||||
end |
||||
|
||||
defp register( |
||||
{:unsubscribe, %Subscription{id: subscription_id}}, |
||||
from, |
||||
%__MODULE__{request_id_to_registration: request_id_to_registration} = state |
||||
) do |
||||
unique_id = unique_request_id(state) |
||||
|
||||
{ |
||||
%__MODULE__{ |
||||
state |
||||
| request_id_to_registration: |
||||
Map.put(request_id_to_registration, unique_id, %Registration{ |
||||
from: from, |
||||
type: :unsubscribe, |
||||
subscription_id: subscription_id |
||||
}) |
||||
}, |
||||
request(%{id: unique_id, method: "eth_unsubscribe", params: [subscription_id]}) |
||||
} |
||||
end |
||||
|
||||
defp unique_request_id(%__MODULE__{request_id_to_registration: request_id_to_registration} = state) do |
||||
unique_request_id = EthereumJSONRPC.unique_request_id() |
||||
|
||||
case request_id_to_registration do |
||||
# collision |
||||
%{^unique_request_id => _} -> |
||||
unique_request_id(state) |
||||
|
||||
_ -> |
||||
unique_request_id |
||||
end |
||||
end |
||||
|
||||
defp respond_to_registration( |
||||
%Registration{type: :json_rpc, from: from}, |
||||
new_request_id_to_registration, |
||||
response, |
||||
%__MODULE__{} = state |
||||
) do |
||||
reply = |
||||
case response do |
||||
%{"result" => result} -> {:ok, result} |
||||
%{"error" => error} -> {:error, error} |
||||
end |
||||
|
||||
GenServer.reply(from, reply) |
||||
|
||||
{:noreply, %__MODULE__{state | request_id_to_registration: new_request_id_to_registration}} |
||||
end |
||||
|
||||
defp respond_to_registration( |
||||
%Registration{type: :subscribe, from: {subscriber_pid, _} = from}, |
||||
new_request_id_to_registration, |
||||
%{"result" => subscription_id}, |
||||
%__MODULE__{url: url} = state |
||||
) do |
||||
subscription = %Subscription{ |
||||
id: subscription_id, |
||||
subscriber_pid: subscriber_pid, |
||||
transport: EthereumJSONRPC.WebSocket, |
||||
transport_options: [web_socket: __MODULE__, web_socket_options: %{web_socket: self()}, url: url] |
||||
} |
||||
|
||||
GenServer.reply(from, {:ok, subscription}) |
||||
|
||||
new_state = |
||||
state |
||||
|> put_in([Access.key!(:request_id_to_registration)], new_request_id_to_registration) |
||||
|> put_in([Access.key!(:subscription_id_to_subscription), subscription_id], subscription) |
||||
|
||||
{:noreply, new_state} |
||||
end |
||||
|
||||
defp respond_to_registration( |
||||
%Registration{type: :subscribe, from: from}, |
||||
new_request_id_to_registration, |
||||
%{"error" => error}, |
||||
%__MODULE__{} = state |
||||
) do |
||||
GenServer.reply(from, {:error, error}) |
||||
|
||||
{:noreply, %__MODULE__{state | request_id_to_registration: new_request_id_to_registration}} |
||||
end |
||||
|
||||
defp respond_to_registration( |
||||
%Registration{type: :unsubscribe, from: from, subscription_id: subscription_id}, |
||||
new_request_id_to_registration, |
||||
response, |
||||
%__MODULE__{} = state |
||||
) do |
||||
reply = |
||||
case response do |
||||
%{"result" => true} -> :ok |
||||
%{"result" => false} -> {:error, :not_found} |
||||
%{"error" => error} -> {:error, error} |
||||
end |
||||
|
||||
GenServer.reply(from, reply) |
||||
|
||||
new_state = |
||||
state |
||||
|> put_in([Access.key!(:request_id_to_registration)], new_request_id_to_registration) |
||||
|> update_in([Access.key!(:subscription_id_to_subscription)], &Map.delete(&1, subscription_id)) |
||||
|
||||
{:noreply, new_state} |
||||
end |
||||
|
||||
defp respond_to_registration(nil, _, response, %__MODULE__{} = state) do |
||||
Logger.error(fn -> ["Got response for unregistered request ID: ", inspect(response)] end) |
||||
|
||||
{:noreply, state} |
||||
end |
||||
|
||||
defp uri_to_address(%URI{host: host, port: nil}), do: host |
||||
defp uri_to_address(%URI{host: host, port: port}) when is_integer(port), do: {host, port} |
||||
end |
||||
@ -1,71 +0,0 @@ |
||||
defmodule EthereumJSONRPC.WebSocket.Socket.Receiver do |
||||
@moduledoc """ |
||||
Receives WebSocket messages with `Socket.Web.recv` and send non-ping/pong messages on to `EthereumJSONRPC.WebSocket.Socket` |
||||
""" |
||||
|
||||
@enforce_keys ~w(parent socket_web)a |
||||
defstruct fragments_type: nil, |
||||
fragments: [], |
||||
parent: nil, |
||||
socket_web: nil |
||||
|
||||
def spawn_link(named_arguments) do |
||||
spawn_link(__MODULE__, :loop, [struct!(__MODULE__, named_arguments)]) |
||||
end |
||||
|
||||
@doc false |
||||
def loop(%__MODULE__{socket_web: socket_web} = state) do |
||||
loop(state, Socket.Web.recv(socket_web)) |
||||
end |
||||
|
||||
# start of fragment |
||||
defp loop(state, {:ok, {:fragmented, type, fragment}}) when type in ~w(binary text)a do |
||||
loop(%__MODULE__{state | fragments_type: type, fragments: [fragment]}) |
||||
end |
||||
|
||||
# middle of fragment |
||||
defp loop(%__MODULE__{fragments: fragments} = state, {:ok, {:fragmented, :continuation, fragment}}) do |
||||
loop(%__MODULE__{state | fragments: [fragments | fragment]}) |
||||
end |
||||
|
||||
# end of fragment |
||||
defp loop( |
||||
%__MODULE__{fragments_type: fragments_type, fragments: fragments, parent: parent} = state, |
||||
{:ok, {:fragmented, :end, fragment}} |
||||
) do |
||||
GenServer.cast(parent, {fragments_type, IO.iodata_to_binary([fragments | fragment])}) |
||||
loop(%__MODULE__{state | fragments_type: nil, fragments: []}) |
||||
end |
||||
|
||||
defp loop(%__MODULE__{parent: parent} = state, {:ok, {:binary, _} = binary}) do |
||||
GenServer.cast(parent, binary) |
||||
loop(state) |
||||
end |
||||
|
||||
defp loop(%__MODULE__{parent: parent} = state, {:ok, {:text, _} = text}) do |
||||
GenServer.cast(parent, text) |
||||
loop(state) |
||||
end |
||||
|
||||
defp loop(%__MODULE__{socket_web: socket_web} = state, {:ok, {:ping, data}}) do |
||||
Socket.Web.send!(socket_web, {:pong, data}) |
||||
loop(state) |
||||
end |
||||
|
||||
defp loop(%__MODULE__{parent: parent} = state, {:ok, {:pong, _data} = pong}) do |
||||
GenServer.cast(parent, pong) |
||||
loop(state) |
||||
end |
||||
|
||||
defp loop(%__MODULE__{parent: parent}, {:ok, :close = close}) do |
||||
GenServer.cast(parent, close) |
||||
end |
||||
|
||||
defp loop(%__MODULE__{parent: parent}, {:ok, {:close, _code, _data} = close}) do |
||||
GenServer.cast(parent, close) |
||||
end |
||||
|
||||
defp loop(%__MODULE__{parent: parent}, {:error, _reason} = error) do |
||||
GenServer.cast(parent, error) |
||||
end |
||||
end |
||||
@ -1,300 +0,0 @@ |
||||
defmodule EthereumJSONRPC.WebSocket.WebSockex do |
||||
@moduledoc """ |
||||
Implements `EthereumJSONRPC.WebSocket` using `WebSockex`. |
||||
""" |
||||
|
||||
use WebSockex |
||||
|
||||
require Logger |
||||
|
||||
import EthereumJSONRPC, only: [request: 1] |
||||
|
||||
alias EthereumJSONRPC.{Subscription, Transport, WebSocket} |
||||
alias EthereumJSONRPC.WebSocket.Registration |
||||
|
||||
@behaviour WebSocket |
||||
|
||||
@enforce_keys ~w(url)a |
||||
defstruct request_id_to_registration: %{}, |
||||
subscription_id_to_subscription: %{}, |
||||
url: nil |
||||
|
||||
@type t :: %__MODULE__{ |
||||
request_id_to_registration: %{non_neg_integer() => Registration.t()}, |
||||
subscription_id_to_subscription: %{String.t() => Subscription.t()}, |
||||
url: String.t() |
||||
} |
||||
|
||||
# Supervisor interface |
||||
|
||||
@impl WebSocket |
||||
# only allow secure WSS |
||||
def start_link(["wss://" <> _ = url, gen_server_options]) when is_list(gen_server_options) do |
||||
WebSockex.start_link(url, __MODULE__, %__MODULE__{url: url}, [ |
||||
{:cacerts, :certifi.cacerts()}, |
||||
{:insecure, false} | gen_server_options |
||||
]) |
||||
end |
||||
|
||||
# Client interface |
||||
|
||||
@impl WebSocket |
||||
@spec json_rpc(WebSocket.web_socket(), Transport.request()) :: {:ok, Transport.result()} | {:error, reason :: term()} |
||||
def json_rpc(client, request) do |
||||
unique_id = EthereumJSONRPC.unique_request_id() |
||||
unique_request = Map.put(request, :id, unique_id) |
||||
|
||||
{:ok, reference} = GenServer.call(client, {:register, %{id: unique_id, type: :json_rpc}}) |
||||
WebSockex.send_frame(client, {:text, Jason.encode!(unique_request)}) |
||||
|
||||
receive do |
||||
{^reference, reply} -> reply |
||||
after |
||||
5000 -> |
||||
exit(:timeout) |
||||
end |
||||
end |
||||
|
||||
@impl WebSocket |
||||
@spec subscribe(WebSocket.web_socket(), Subscription.event(), Subscription.params()) :: |
||||
{:ok, Subscription.t()} | {:error, reason :: term()} |
||||
def subscribe(client, event, params) when is_binary(event) and is_list(params) do |
||||
unique_id = EthereumJSONRPC.unique_request_id() |
||||
|
||||
unique_request = |
||||
%{id: unique_id, method: "eth_subscribe", params: [event | params]} |
||||
|> request() |
||||
|
||||
{:ok, reference} = GenServer.call(client, {:register, %{id: unique_id, type: :subscribe}}) |
||||
WebSockex.send_frame(client, {:text, Jason.encode!(unique_request)}) |
||||
|
||||
receive do |
||||
{^reference, reply} -> reply |
||||
after |
||||
5000 -> |
||||
exit(:timeout) |
||||
end |
||||
end |
||||
|
||||
@impl WebSocket |
||||
@spec unsubscribe(WebSocket.web_socket(), Subscription.t()) :: :ok | {:error, :not_found} |
||||
def unsubscribe(client, %Subscription{id: subscription_id}) do |
||||
unique_id = EthereumJSONRPC.unique_request_id() |
||||
|
||||
unique_request = |
||||
%{id: unique_id, method: "eth_unsubscribe", params: [subscription_id]} |
||||
|> request() |
||||
|
||||
with {:ok, reference} <- |
||||
GenServer.call(client, {:register, %{id: unique_id, type: :unsubscribe, subscription_id: subscription_id}}) do |
||||
WebSockex.send_frame(client, {:text, Jason.encode!(unique_request)}) |
||||
|
||||
receive do |
||||
{^reference, reply} -> reply |
||||
after |
||||
5000 -> |
||||
exit(:timeout) |
||||
end |
||||
end |
||||
end |
||||
|
||||
# WebSockex functions |
||||
|
||||
@impl WebSockex |
||||
def handle_frame({:text, message}, %__MODULE__{} = state) do |
||||
case Jason.decode(message) do |
||||
{:ok, json} -> |
||||
handle_response(json, state) |
||||
|
||||
{:error, _} = error -> |
||||
broadcast(error, state) |
||||
{:ok, state} |
||||
end |
||||
end |
||||
|
||||
@impl WebSockex |
||||
def handle_info({:"$gen_call", from, request}, %__MODULE__{} = state) do |
||||
handle_call(request, from, state) |
||||
end |
||||
|
||||
defp handle_call( |
||||
{:register, %{id: id} = options}, |
||||
from, |
||||
%__MODULE__{request_id_to_registration: request_id_to_registration} = state |
||||
) |
||||
when is_integer(id) do |
||||
case request_id_to_registration do |
||||
%{^id => _} -> |
||||
GenServer.reply(from, {:error, :already_registered}) |
||||
{:ok, state} |
||||
|
||||
_ -> |
||||
register(options, from, state) |
||||
end |
||||
end |
||||
|
||||
defp register(%{id: id, type: type}, {_, reference} = from, state) |
||||
when type in ~w(json_rpc subscribe)a and is_reference(reference) do |
||||
GenServer.reply(from, {:ok, reference}) |
||||
|
||||
{:ok, put_in(state.request_id_to_registration[id], %Registration{from: from, type: type})} |
||||
end |
||||
|
||||
defp register( |
||||
%{id: id, type: :unsubscribe = type, subscription_id: subscription_id}, |
||||
{_, reference} = from, |
||||
%__MODULE__{subscription_id_to_subscription: subscription_id_to_subscription} = state |
||||
) |
||||
when is_reference(reference) do |
||||
case subscription_id_to_subscription do |
||||
%{^subscription_id => _} -> |
||||
GenServer.reply(from, {:ok, reference}) |
||||
|
||||
{:ok, |
||||
put_in(state.request_id_to_registration[id], %Registration{ |
||||
from: from, |
||||
type: type, |
||||
subscription_id: subscription_id |
||||
})} |
||||
|
||||
_ -> |
||||
GenServer.reply(from, {:error, :not_found}) |
||||
{:ok, state} |
||||
end |
||||
end |
||||
|
||||
defp handle_response( |
||||
%{"method" => "eth_subscription", "params" => %{"result" => result, "subscription" => subscription_id}}, |
||||
%__MODULE__{subscription_id_to_subscription: subscription_id_to_subscription} = state |
||||
) do |
||||
case subscription_id_to_subscription do |
||||
%{^subscription_id => subscription} -> |
||||
Subscription.publish(subscription, {:ok, result}) |
||||
|
||||
_ -> |
||||
Logger.error(fn -> |
||||
[ |
||||
"Unexpected `eth_subscription` subscripton ID (", |
||||
inspect(subscription_id), |
||||
") result (", |
||||
inspect(result), |
||||
"). Subscription ID not in known subscription IDs (", |
||||
subscription_id_to_subscription |
||||
|> Map.values() |
||||
|> Enum.map(&inspect/1), |
||||
")." |
||||
] |
||||
end) |
||||
end |
||||
|
||||
{:ok, state} |
||||
end |
||||
|
||||
defp handle_response( |
||||
%{"id" => id} = response, |
||||
%__MODULE__{request_id_to_registration: request_id_to_registration} = state |
||||
) do |
||||
{registration, new_request_id_to_registration} = Map.pop(request_id_to_registration, id) |
||||
respond_to_registration(registration, new_request_id_to_registration, response, state) |
||||
end |
||||
|
||||
defp handle_response(response, %__MODULE__{} = state) do |
||||
Logger.error(fn -> |
||||
[ |
||||
"Unexpected JSON response from web socket\n", |
||||
"\n", |
||||
" Response:\n", |
||||
" ", |
||||
inspect(response) |
||||
] |
||||
end) |
||||
|
||||
{:ok, state} |
||||
end |
||||
|
||||
defp respond_to_registration( |
||||
%Registration{type: :json_rpc, from: from}, |
||||
new_request_id_to_registration, |
||||
response, |
||||
%__MODULE__{} = state |
||||
) do |
||||
reply = |
||||
case response do |
||||
%{"result" => result} -> {:ok, result} |
||||
%{"error" => error} -> {:error, error} |
||||
end |
||||
|
||||
GenServer.reply(from, reply) |
||||
|
||||
{:ok, %__MODULE__{state | request_id_to_registration: new_request_id_to_registration}} |
||||
end |
||||
|
||||
defp respond_to_registration( |
||||
%Registration{type: :subscribe, from: {subscriber_pid, _} = from}, |
||||
new_request_id_to_registration, |
||||
%{"result" => subscription_id}, |
||||
%__MODULE__{url: url} = state |
||||
) do |
||||
subscription = %Subscription{ |
||||
id: subscription_id, |
||||
subscriber_pid: subscriber_pid, |
||||
transport: EthereumJSONRPC.WebSocket, |
||||
transport_options: [web_socket: __MODULE__, web_socket_options: %{web_socket: self()}, url: url] |
||||
} |
||||
|
||||
GenServer.reply(from, {:ok, subscription}) |
||||
|
||||
new_state = |
||||
state |
||||
|> put_in([Access.key!(:request_id_to_registration)], new_request_id_to_registration) |
||||
|> put_in([Access.key!(:subscription_id_to_subscription), subscription_id], subscription) |
||||
|
||||
{:ok, new_state} |
||||
end |
||||
|
||||
defp respond_to_registration( |
||||
%Registration{type: :subscribe, from: from}, |
||||
new_request_id_to_registration, |
||||
%{"error" => error}, |
||||
%__MODULE__{} = state |
||||
) do |
||||
GenServer.reply(from, {:error, error}) |
||||
|
||||
{:ok, %__MODULE__{state | request_id_to_registration: new_request_id_to_registration}} |
||||
end |
||||
|
||||
defp respond_to_registration( |
||||
%Registration{type: :unsubscribe, from: from, subscription_id: subscription_id}, |
||||
new_request_id_to_registration, |
||||
response, |
||||
%__MODULE__{} = state |
||||
) do |
||||
reply = |
||||
case response do |
||||
%{"result" => true} -> :ok |
||||
%{"result" => false} -> {:error, :not_found} |
||||
%{"error" => error} -> {:error, error} |
||||
end |
||||
|
||||
GenServer.reply(from, reply) |
||||
|
||||
new_state = |
||||
state |
||||
|> put_in([Access.key!(:request_id_to_registration)], new_request_id_to_registration) |
||||
|> update_in([Access.key!(:subscription_id_to_subscription)], &Map.delete(&1, subscription_id)) |
||||
|
||||
{:ok, new_state} |
||||
end |
||||
|
||||
defp respond_to_registration(nil, _, response, %__MODULE__{} = state) do |
||||
Logger.error(fn -> ["Got response for unregistered request ID: ", inspect(response)] end) |
||||
|
||||
{:ok, state} |
||||
end |
||||
|
||||
defp broadcast(message, %__MODULE__{subscription_id_to_subscription: id_to_subscription}) do |
||||
id_to_subscription |
||||
|> Map.values() |
||||
|> Subscription.broadcast(message) |
||||
end |
||||
end |
||||
Loading…
Reference in new issue