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| 1 | +// Copyright 2023-, GraphOps and Semiotic Labs. |
| 2 | +// SPDX-License-Identifier: Apache-2.0 |
| 3 | + |
| 4 | +use std::{collections::HashMap, time::Duration}; |
| 5 | + |
| 6 | +use alloy_primitives::Address; |
| 7 | +use anyhow::Result; |
| 8 | +use ethers_core::types::U256; |
| 9 | +use eventuals::{timer, Eventual, EventualExt}; |
| 10 | +use log::warn; |
| 11 | +use serde::Deserialize; |
| 12 | +use serde_json::json; |
| 13 | +use tokio::time::sleep; |
| 14 | + |
| 15 | +use crate::prelude::SubgraphClient; |
| 16 | + |
| 17 | +pub fn escrow_accounts( |
| 18 | + escrow_subgraph: &'static SubgraphClient, |
| 19 | + indexer_address: Address, |
| 20 | + interval: Duration, |
| 21 | +) -> Eventual<HashMap<Address, U256>> { |
| 22 | + // Types for deserializing the network subgraph response |
| 23 | + #[derive(Deserialize)] |
| 24 | + #[serde(rename_all = "camelCase")] |
| 25 | + struct EscrowAccountsResponse { |
| 26 | + escrow_accounts: Vec<EscrowAccount>, |
| 27 | + } |
| 28 | + // These 2 structs are used to deserialize the response from the escrow subgraph. |
| 29 | + // Note that U256's serde implementation is based on serializing the internal bytes, not the string decimal |
| 30 | + // representation. This is why we deserialize them as strings below. |
| 31 | + #[derive(Deserialize)] |
| 32 | + #[serde(rename_all = "camelCase")] |
| 33 | + struct EscrowAccount { |
| 34 | + balance: String, |
| 35 | + total_amount_thawing: String, |
| 36 | + sender: Sender, |
| 37 | + } |
| 38 | + #[derive(Deserialize)] |
| 39 | + #[serde(rename_all = "camelCase")] |
| 40 | + struct Sender { |
| 41 | + id: Address, |
| 42 | + } |
| 43 | + |
| 44 | + timer(interval).map_with_retry( |
| 45 | + move |_| async move { |
| 46 | + let response = escrow_subgraph |
| 47 | + .query::<EscrowAccountsResponse>(&json!({ |
| 48 | + "query": r#" |
| 49 | + query ($indexer: ID!) { |
| 50 | + escrowAccounts(where: {receiver_: {id: $indexer}}) { |
| 51 | + balance |
| 52 | + totalAmountThawing |
| 53 | + sender { |
| 54 | + id |
| 55 | + } |
| 56 | + } |
| 57 | + } |
| 58 | + "#, |
| 59 | + "variables": { |
| 60 | + "indexer": indexer_address, |
| 61 | + } |
| 62 | + } |
| 63 | + )) |
| 64 | + .await |
| 65 | + .map_err(|e| e.to_string())?; |
| 66 | + |
| 67 | + // If there are any GraphQL errors returned, we'll log them for debugging |
| 68 | + if let Some(errors) = response.errors { |
| 69 | + warn!( |
| 70 | + "Errors encountered fetching escrow accounts for indexer {:?}: {}", |
| 71 | + indexer_address, |
| 72 | + errors |
| 73 | + .into_iter() |
| 74 | + .map(|e| e.message) |
| 75 | + .collect::<Vec<_>>() |
| 76 | + .join(", ") |
| 77 | + ); |
| 78 | + } |
| 79 | + |
| 80 | + let sender_accounts = response |
| 81 | + .data |
| 82 | + .map_or(vec![], |data| data.escrow_accounts) |
| 83 | + .iter() |
| 84 | + .map(|account| { |
| 85 | + let balance = U256::checked_sub( |
| 86 | + U256::from_dec_str(&account.balance)?, |
| 87 | + U256::from_dec_str(&account.total_amount_thawing)?, |
| 88 | + ) |
| 89 | + .unwrap_or_else(|| { |
| 90 | + warn!( |
| 91 | + "Balance minus total amount thawing underflowed for account {}. \ |
| 92 | + Setting balance to 0, no queries will be served for this sender.", |
| 93 | + account.sender.id |
| 94 | + ); |
| 95 | + U256::from(0) |
| 96 | + }); |
| 97 | + |
| 98 | + Ok((account.sender.id, balance)) |
| 99 | + }) |
| 100 | + .collect::<Result<HashMap<_, _>, anyhow::Error>>() |
| 101 | + .map_err(|e| format!("{}", e))?; |
| 102 | + |
| 103 | + Ok(sender_accounts) |
| 104 | + }, |
| 105 | + move |err: String| { |
| 106 | + warn!( |
| 107 | + "Failed to fetch escrow accounts for indexer {:?}: {}", |
| 108 | + indexer_address, err |
| 109 | + ); |
| 110 | + |
| 111 | + sleep(interval.div_f32(2.0)) |
| 112 | + }, |
| 113 | + ) |
| 114 | +} |
| 115 | + |
| 116 | +#[cfg(test)] |
| 117 | +mod tests { |
| 118 | + use wiremock::matchers::{method, path}; |
| 119 | + use wiremock::{Mock, MockServer, ResponseTemplate}; |
| 120 | + |
| 121 | + use crate::test_vectors; |
| 122 | + |
| 123 | + use super::*; |
| 124 | + |
| 125 | + #[tokio::test] |
| 126 | + async fn test_current_accounts() { |
| 127 | + // Set up a mock escrow subgraph |
| 128 | + let mock_server = MockServer::start().await; |
| 129 | + let escrow_subgraph_endpoint = SubgraphClient::local_deployment_endpoint( |
| 130 | + &mock_server.uri(), |
| 131 | + &test_vectors::ESCROW_SUBGRAPH_DEPLOYMENT, |
| 132 | + ) |
| 133 | + .unwrap(); |
| 134 | + let escrow_subgraph = Box::leak(Box::new( |
| 135 | + SubgraphClient::new( |
| 136 | + Some(&mock_server.uri()), |
| 137 | + Some(&test_vectors::ESCROW_SUBGRAPH_DEPLOYMENT), |
| 138 | + escrow_subgraph_endpoint.as_ref(), |
| 139 | + ) |
| 140 | + .unwrap(), |
| 141 | + )); |
| 142 | + |
| 143 | + let mock = Mock::given(method("POST")) |
| 144 | + .and(path(format!( |
| 145 | + "/subgraphs/id/{}", |
| 146 | + *test_vectors::ESCROW_SUBGRAPH_DEPLOYMENT |
| 147 | + ))) |
| 148 | + .respond_with( |
| 149 | + ResponseTemplate::new(200) |
| 150 | + .set_body_raw(test_vectors::ESCROW_QUERY_RESPONSE, "application/json"), |
| 151 | + ); |
| 152 | + mock_server.register(mock).await; |
| 153 | + |
| 154 | + let accounts = escrow_accounts( |
| 155 | + escrow_subgraph, |
| 156 | + *test_vectors::INDEXER_ADDRESS, |
| 157 | + Duration::from_secs(60), |
| 158 | + ); |
| 159 | + |
| 160 | + assert_eq!( |
| 161 | + accounts.value().await.unwrap(), |
| 162 | + *test_vectors::ESCROW_ACCOUNTS |
| 163 | + ); |
| 164 | + } |
| 165 | +} |
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