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tari-project / tari / 18586282491

17 Oct 2025 07:53AM UTC coverage: 58.577% (-1.0%) from 59.552%
18586282491

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github

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fix: change how pagination works on utxo scanning (#7546)

Description
---
Properly handle the special edge case, where the request has reached the
page limit, but we are also not done with the block. We also dont want
to split up the block over two requests. So we need to ensure that we
remove the partial block we added so that it can be requested fully in
the next request. We also dont want to get in a loop where the block
cannot fit into the page limit, so if the block is the same as the first
one, we just send it as it, partial. If net we remove it and let it be
sent in the next request.

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **Bug Fixes**
* Fixed edge cases in paginated UTXO queries when a page ends mid-block
to prevent partial or duplicated results.
* Ensures correct continuation across block boundaries and early exit
when the first block is also the last that can be sent.
* Removes trailing blocks or partial entries so subsequent pages request
the correct data.
  * Improves error reporting for rare pagination inconsistencies.
* Preserves behavior when limits aren’t reached or the chain end is
encountered.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

0 of 10 new or added lines in 1 file covered. (0.0%)

1137 existing lines in 32 files now uncovered.

66481 of 113494 relevant lines covered (58.58%)

228684.39 hits per line

Source File
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63.75
/base_layer/core/src/base_node/sync/rpc/tests.rs
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//  Copyright 2020, The Tari Project
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//
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//  Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
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//  following conditions are met:
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//
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//  1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following
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//  disclaimer.
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//
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//  2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
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//  following disclaimer in the documentation and/or other materials provided with the distribution.
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//
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//  3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote
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//  products derived from this software without specific prior written permission.
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//
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//  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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//  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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//  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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//  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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//  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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//  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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//  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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use futures::StreamExt;
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use tari_comms::protocol::rpc::{mock::RpcRequestMock, RpcStatusCode};
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use tari_service_framework::reply_channel;
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use tari_test_utils::{streams::convert_mpsc_to_stream, unpack_enum};
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use tokio::sync::broadcast;
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use super::BaseNodeSyncRpcService;
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use crate::{
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    base_node::{BaseNodeSyncService, LocalNodeCommsInterface},
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    chain_storage::BlockchainDatabase,
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    proto::base_node::{SyncBlocksRequest, SyncUtxosRequest},
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    test_helpers::{
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        blockchain::{create_main_chain, create_new_blockchain, TempDatabase},
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        create_peer_manager,
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    },
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};
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fn setup() -> (
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    BaseNodeSyncRpcService<TempDatabase>,
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    BlockchainDatabase<TempDatabase>,
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    RpcRequestMock,
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) {
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    let peer_manager = create_peer_manager();
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    let request_mock = RpcRequestMock::new(peer_manager);
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    let db = create_new_blockchain();
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    let (req_tx, _) = reply_channel::unbounded();
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    let (block_tx, _) = reply_channel::unbounded();
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    let (block_event_tx, _) = broadcast::channel(1);
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    let service = BaseNodeSyncRpcService::new(
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        db.clone().into(),
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        LocalNodeCommsInterface::new(req_tx, block_tx, block_event_tx),
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    );
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    (service, db, request_mock)
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}
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mod sync_blocks {
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    use super::*;
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    #[tokio::test]
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    async fn it_returns_not_found_if_unknown_hash() {
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        let (service, _, rpc_request_mock) = setup();
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        let msg = SyncBlocksRequest {
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            start_hash: vec![0; 32],
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            end_hash: vec![0; 32],
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        };
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        let req = rpc_request_mock.request_with_context(Default::default(), msg);
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        let err = service.sync_blocks(req).await.unwrap_err();
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        unpack_enum!(RpcStatusCode::NotFound = err.as_status_code());
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    }
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    #[tokio::test]
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    async fn it_sends_bad_request_on_bad_response() {
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        let (service, db, rpc_request_mock) = setup();
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        let (_, chain) = create_main_chain(&db, block_specs!(["A->GB"])).await;
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        let block = chain.get("A").unwrap();
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        let msg = SyncBlocksRequest {
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            start_hash: block.hash().to_vec(),
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            end_hash: block.hash().to_vec(),
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        };
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        let req = rpc_request_mock.request_with_context(Default::default(), msg);
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        assert!(service.sync_blocks(req).await.is_err());
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    }
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    #[tokio::test]
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    async fn it_streams_blocks_until_end() {
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        let (service, db, rpc_request_mock) = setup();
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        let (_, chain) = create_main_chain(&db, block_specs!(["A->GB"], ["B->A"], ["C->B"], ["D->C"], ["E->D"])).await;
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        let first_block = chain.get("A").unwrap();
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        let last_block = chain.get("E").unwrap();
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        let msg = SyncBlocksRequest {
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            start_hash: first_block.hash().to_vec(),
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            end_hash: last_block.hash().to_vec(),
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        };
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        let req = rpc_request_mock.request_with_context(Default::default(), msg);
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        let mut streaming = service.sync_blocks(req).await.unwrap().into_inner();
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        let blocks = convert_mpsc_to_stream(&mut streaming)
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            .map(|block| block.unwrap())
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            .collect::<Vec<_>>()
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            .await;
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        assert_eq!(blocks.len(), 4);
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        blocks.iter().zip(["B", "C", "D", "E"]).for_each(|(block, name)| {
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            assert_eq!(*chain.get(name).unwrap().hash(), block.hash);
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        });
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    }
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}
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mod sync_utxos {
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    use super::*;
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    #[tokio::test]
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    async fn it_returns_not_found_if_unknown_hash() {
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        let (service, db, rpc_request_mock) = setup();
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        let gen_block_hash = db.fetch_header(0).unwrap().unwrap().hash();
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        let msg = SyncUtxosRequest {
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            start_header_hash: gen_block_hash.to_vec(),
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            end_header_hash: vec![0; 32],
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        };
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        let req = rpc_request_mock.request_with_context(Default::default(), msg);
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        let err = service.sync_utxos(req).await.unwrap_err();
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        unpack_enum!(RpcStatusCode::NotFound = err.as_status_code());
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    }
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    #[tokio::test]
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    async fn it_returns_not_found_if_start_not_found() {
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        let (service, db, rpc_request_mock) = setup();
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        let (_, chain) = create_main_chain(&db, block_specs!(["A->GB"])).await;
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        let gb = chain.get("GB").unwrap();
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        let msg = SyncUtxosRequest {
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            start_header_hash: vec![0; 32],
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            end_header_hash: gb.hash().to_vec(),
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        };
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        let req = rpc_request_mock.request_with_context(Default::default(), msg);
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        let err = service.sync_utxos(req).await.unwrap_err();
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        unpack_enum!(RpcStatusCode::NotFound = err.as_status_code());
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    }
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}
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