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-/* This file is part of DarkFi (https://dark.fi)
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- *
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- * Copyright (C) 2020-2026 Dyne.org foundation
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- *
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- * This program is free software: you can redistribute it and/or modify
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- * it under the terms of the GNU Affero General Public License as
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- * published by the Free Software Foundation, either version 3 of the
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- * License, or (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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- * GNU Affero General Public License for more details.
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- *
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- * You should have received a copy of the GNU Affero General Public License
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- * along with this program. If not, see <https://www.gnu.org/licenses/>.
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- */
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-
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-use std::{collections::HashSet, slice};
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-
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-use async_trait::async_trait;
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-use smol::lock::{Mutex, MutexGuard};
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-use tinyjson::JsonValue;
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-use tracing::{debug, error};
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-
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-use darkfi::{
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- event_graph::{proto::EventPut, Event, EventGraphPtr},
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- net,
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- rpc::{
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- jsonrpc::{ErrorCode, JsonError, JsonRequest, JsonResponse, JsonResult, JsonSubscriber},
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- p2p_method::HandlerP2p,
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- server::RequestHandler,
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- },
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- system::StoppableTaskPtr,
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- util::encoding::base64,
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-};
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-
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-use darkfi_serial::{deserialize, deserialize_async_partial, serialize_async};
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-use genevd::GenEvent;
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-
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-pub struct JsonRpcInterface {
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- _nickname: String,
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- event_graph: EventGraphPtr,
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- p2p: net::P2pPtr,
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- rpc_connections: Mutex<HashSet<StoppableTaskPtr>>,
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- dnet_sub: JsonSubscriber,
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- deg_sub: JsonSubscriber,
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-}
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-
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-#[async_trait]
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-impl RequestHandler<()> for JsonRpcInterface {
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- async fn handle_request(&self, req: JsonRequest) -> JsonResult {
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- match req.method.as_str() {
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- "add" => self.add(req.id, req.params).await,
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- "list" => self.list(req.id, req.params).await,
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-
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- "ping" => self.pong(req.id, req.params).await,
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- "dnet.subscribe_events" => self.dnet_subscribe_events(req.id, req.params).await,
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- "dnet.switch" => self.dnet_switch(req.id, req.params).await,
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- "p2p.get_info" => self.p2p_get_info(req.id, req.params).await,
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-
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- "deg.switch" => self.deg_switch(req.id, req.params).await,
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- "deg.subscribe_events" => self.deg_subscribe_events(req.id, req.params).await,
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-
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- "eventgraph.get_info" => self.eg_get_info(req.id, req.params).await,
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-
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- _ => return JsonError::new(ErrorCode::MethodNotFound, None, req.id).into(),
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- }
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- }
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-
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- async fn connections_mut(&self) -> MutexGuard<'life0, HashSet<StoppableTaskPtr>> {
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- self.rpc_connections.lock().await
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- }
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-}
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-
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-impl HandlerP2p for JsonRpcInterface {
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- fn p2p(&self) -> net::P2pPtr {
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- self.p2p.clone()
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- }
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-}
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-
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-impl JsonRpcInterface {
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- pub fn new(
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- _nickname: String,
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- event_graph: EventGraphPtr,
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- p2p: net::P2pPtr,
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- dnet_sub: JsonSubscriber,
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- deg_sub: JsonSubscriber,
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- ) -> Self {
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- Self {
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- _nickname,
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- event_graph,
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- p2p,
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- rpc_connections: Mutex::new(HashSet::new()),
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- dnet_sub,
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- deg_sub,
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- }
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- }
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-
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- // RPCAPI:
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- // Initializes a subscription to p2p dnet events.
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- // Once a subscription is established, `darkirc` will send JSON-RPC notifications of
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- // new network events to the subscriber.
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- //
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- // --> {"jsonrpc": "2.0", "method": "dnet.subscribe_events", "params": [], "id": 1}
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- // <-- {"jsonrpc": "2.0", "method": "dnet.subscribe_events", "params": [`event`]}
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- pub async fn dnet_subscribe_events(&self, id: i64, params: JsonValue) -> JsonResult {
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- let params = params.get::<Vec<JsonValue>>().unwrap();
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- if !params.is_empty() {
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- return JsonError::new(ErrorCode::InvalidParams, None, id).into()
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- }
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-
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- self.dnet_sub.clone().into()
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- }
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-
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- // RPCAPI:
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- // Activate or deactivate dnet in the P2P stack.
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- // By sending `true`, dnet will be activated, and by sending `false` dnet
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- // will be deactivated. Returns `true` on success.
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- //
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- // --> {"jsonrpc": "2.0", "method": "dnet_switch", "params": [true], "id": 42}
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- // <-- {"jsonrpc": "2.0", "result": true, "id": 42}
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- async fn dnet_switch(&self, id: i64, params: JsonValue) -> JsonResult {
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- let params = params.get::<Vec<JsonValue>>().unwrap();
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- if params.len() != 1 || !params[0].is_bool() {
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- return JsonError::new(ErrorCode::InvalidParams, None, id).into()
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- }
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-
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- let switch = params[0].get::<bool>().unwrap();
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-
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- if *switch {
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- self.p2p.dnet_enable();
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- } else {
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- self.p2p.dnet_disable();
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- }
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-
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- JsonResponse::new(JsonValue::Boolean(true), id).into()
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- }
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-
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- // RPCAPI:
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- // Initializes a subscription to deg events.
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- // Once a subscription is established, apps using eventgraph will send JSON-RPC notifications of
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- // new eventgraph events to the subscriber.
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- //
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- // --> {"jsonrpc": "2.0", "method": "deg.subscribe_events", "params": [], "id": 1}
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- // <-- {"jsonrpc": "2.0", "method": "deg.subscribe_events", "params": [`event`]}
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- pub async fn deg_subscribe_events(&self, id: i64, params: JsonValue) -> JsonResult {
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- let params = params.get::<Vec<JsonValue>>().unwrap();
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- if !params.is_empty() {
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- return JsonError::new(ErrorCode::InvalidParams, None, id).into()
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- }
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-
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- self.deg_sub.clone().into()
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- }
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-
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- // RPCAPI:
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- // Activate or deactivate deg in the EVENTGRAPH.
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- // By sending `true`, deg will be activated, and by sending `false` deg
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- // will be deactivated. Returns `true` on success.
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- //
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- // --> {"jsonrpc": "2.0", "method": "deg.switch", "params": [true], "id": 42}
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- // <-- {"jsonrpc": "2.0", "result": true, "id": 42}
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- async fn deg_switch(&self, id: i64, params: JsonValue) -> JsonResult {
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- let params = params.get::<Vec<JsonValue>>().unwrap();
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- if params.len() != 1 || !params[0].is_bool() {
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- return JsonError::new(ErrorCode::InvalidParams, None, id).into()
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- }
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-
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- let switch = params[0].get::<bool>().unwrap();
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-
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- if *switch {
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- self.event_graph.deg_enable().await;
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- } else {
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- self.event_graph.deg_disable().await;
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- }
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-
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- JsonResponse::new(JsonValue::Boolean(true), id).into()
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- }
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-
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- // RPCAPI:
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- // Get EVENTGRAPH info.
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- //
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- // --> {"jsonrpc": "2.0", "method": "deg.switch", "params": [true], "id": 42}
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- // <-- {"jsonrpc": "2.0", "result": true, "id": 42}
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- async fn eg_get_info(&self, id: i64, params: JsonValue) -> JsonResult {
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- let params_ = params.get::<Vec<JsonValue>>().unwrap();
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- if !params_.is_empty() {
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- return JsonError::new(ErrorCode::InvalidParams, None, id).into()
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- }
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-
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- self.event_graph.eventgraph_info(id, params).await
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- }
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-
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- // RPCAPI:
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- // Add a new event
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- // --> {"jsonrpc": "2.0", "method": "add", "params": [], "id": 1}
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- // <-- {"jsonrpc": "2.0", "result": [nickname, ...], "id": 1}
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- async fn add(&self, id: i64, params: JsonValue) -> JsonResult {
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- let params = params.get::<Vec<JsonValue>>().unwrap();
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- if params.len() != 1 || !params[0].is_string() {
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- return JsonError::new(ErrorCode::InvalidParams, None, id).into()
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- }
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-
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- let b64 = params[0].get::<String>().unwrap();
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- let dec = base64::decode(b64).unwrap();
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- let genevent: GenEvent = deserialize(&dec).unwrap();
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-
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- // Build a DAG event and return it.
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- let event = Event::new(serialize_async(&genevent).await, &self.event_graph).await;
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-
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- let current_genesis = self.event_graph.current_genesis.read().await;
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- let dag_name = current_genesis.header.timestamp.to_string();
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- if let Err(e) =
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- self.event_graph.header_dag_insert(vec![event.header.clone()], &dag_name).await
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- {
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- error!("Failed inserting new header to Header DAG: {}", e);
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- }
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- if let Err(e) = self.event_graph.dag_insert(slice::from_ref(&event), &dag_name).await {
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- error!("Failed inserting new event to DAG: {e}");
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- } else {
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- // Otherwise, broadcast it
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- self.p2p.broadcast(&EventPut(event, vec![])).await;
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- }
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-
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- let json = JsonValue::Boolean(true);
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- JsonResponse::new(json, id).into()
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- }
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-
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- // RPCAPI:
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- // List events
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- // --> {"jsonrpc": "2.0", "method": "list", "params": [], "id": 1}
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- // <-- {"jsonrpc": "2.0", "result": [task_id, ...], "id": 1}
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- async fn list(&self, id: i64, _params: JsonValue) -> JsonResult {
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- debug!("Fetching all events");
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- let mut seen_events = vec![];
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- let dag_events = self.event_graph.order_events().await;
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-
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- for event in dag_events.iter() {
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- let event_id = event.header.id();
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- // Try to deserialize it. (Here we skip errors)
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- let genevent: GenEvent = match deserialize_async_partial(event.content()).await {
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- Ok((v, _)) => v,
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- Err(e) => {
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- error!("Failed deserializing incoming event: {e}");
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- continue
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- }
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- };
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-
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- debug!("Marking event {event_id} as seen");
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- seen_events.push(genevent);
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- }
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-
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- let ser = darkfi_serial::serialize(&seen_events);
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- let enc = JsonValue::String(base64::encode(&ser));
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-
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- JsonResponse::new(enc, id).into()
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- }
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-}
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