feat(sequencer, indexer): Use zone-sdk instead of bedrock client by pradovic · Pull Request #389 · logos-blockchain/logos-execution-zone

pradovic · 2026-03-09T15:05:39Z

🎯 Purpose

This PR introduces logos-blockchain zone-sdk to hide some complexity from LEZ node in implementing sequencer and indexer. Mainly the part of working with logos blockchain node and submission and lifecycle of transactions.

⚙️ Approach

Zone-sdk has taken over the role of submission/resubmitting strategy, along with the back-fill and support for checkpoints.

🧪 How to Test

Integration tests and regular tests should pass as before the change.

🔗 Dependencies

No dependencies for now.

🔜 Future Work

address todo comments (remove msg_id field from rocksdb)

TO COMPLETE IF APPLICABLE

📋 PR Completion Checklist

Mark only completed items. A complete PR should have all boxes ticked.

Complete PR description
Implement the core functionality
Add/update tests
Add/update documentation and inline comments

Pravdyvy

lgtm

Arjentix · 2026-04-30T16:07:08Z

+logos-blockchain-common-http-client = { git = "https://github.com/logos-blockchain/logos-blockchain.git", rev = "ee281a447d95a951752461ee0a6e88eb4a0f17cf" }
+logos-blockchain-key-management-system-service = { git = "https://github.com/logos-blockchain/logos-blockchain.git", rev = "ee281a447d95a951752461ee0a6e88eb4a0f17cf" }
+logos-blockchain-core = { git = "https://github.com/logos-blockchain/logos-blockchain.git", rev = "ee281a447d95a951752461ee0a6e88eb4a0f17cf" }
+logos-blockchain-chain-broadcast-service = { git = "https://github.com/logos-blockchain/logos-blockchain.git", rev = "ee281a447d95a951752461ee0a6e88eb4a0f17cf" }
+logos-blockchain-chain-service = { git = "https://github.com/logos-blockchain/logos-blockchain.git", rev = "ee281a447d95a951752461ee0a6e88eb4a0f17cf" }
+logos-blockchain-zone-sdk = { git = "https://github.com/logos-blockchain/logos-blockchain.git", rev = "ee281a447d95a951752461ee0a6e88eb4a0f17cf" }


These libraries don't have some stable readable tag yet? E.g. on stage we use 0.1.2 release, can't we use 0.1.2 tag here?

There was some stable tag, but there were also some improvements after it and zone-sdk and release did not really match so I wanted to use the most recent one.

I wanted to re-export crates through sdk so we can unify everything into a single dep as well. I would like to open a separate PR for this and then let's try to pin some sensible release. I think I can do that in the next week or two.

Does that makes sense?

Arjentix · 2026-04-30T16:09:28Z


  logos-blockchain-node-0:
-    image: ghcr.io/logos-blockchain/logos-blockchain@sha256:c5243681b353278cabb562a176f0a5cfbefc2056f18cebc47fe0e3720c29fb12
+    image: ghcr.io/logos-blockchain/logos-blockchain@sha256:9f1829dea335c56f6ff68ae37ea872ed5313b96b69e8ffe143c02b7217de85fc


Can we also pin 0.1.2 here?

Same as the above, I will need to make the docker setup with work with the tag as well.

Arjentix · 2026-04-30T16:11:08Z

-        "backoff": {
-            "start_delay": "100ms",
-            "max_retries": 5
-        }


Hmm, interesting, why? Shouldn't client be able to configure retry strategy?

Good point, I will add configurable params to zone-sdk and then later open a specific PR for this as well.

Arjentix · 2026-04-30T17:41:45Z

+// Kept as a thin client lib for callers that want to query the indexer
+// directly (e.g. integration tests). The sequencer no longer depends on the
+// indexer at runtime — finalization comes from zone-sdk events.
 pub mod indexer_client;


I think you can safely remove it

Still used in integration tests. I have simplified it and left it only in tests.

Arjentix · 2026-04-30T17:46:29Z


+    /// Mark every pending block with `block_id <= last_finalized` as finalized.
+    /// Idempotent — already-finalized blocks are skipped.
+    pub fn clean_pending_blocks_up_to(&self, last_finalized: u64) -> DbResult<()> {


Suggested change

pub fn clean_pending_blocks_up_to(&self, last_finalized: u64) -> DbResult<()> {

pub fn clean_pending_blocks_up_to(&self, last_finalized: BlockId) -> DbResult<()> {

Rest of the storage module uses u64 directly so I used it for consistency. I think I would need to add the dep to nssa_core in order to use it. Maybe it is better to do it in a separate PR for all calls then?

Arjentix

LGTM, thanks

pradovic changed the title ~~Use zone-sdk instead of bedrock client in sequencer and indexer~~ feat(sequencer, indexer): Use zone-sdk instead of bedrock client Mar 9, 2026

pradovic marked this pull request as draft March 9, 2026 16:20

pradovic force-pushed the pg/zone-sdk-lez branch from 4446ea5 to b541451 Compare March 10, 2026 00:05

pradovic self-assigned this Mar 10, 2026

pradovic changed the title ~~feat(sequencer, indexer): Use zone-sdk instead of bedrock client~~ feat(sequencer, indexer): Use zone-sdk instead of bedrock client POC Mar 10, 2026

pradovic force-pushed the pg/zone-sdk-lez branch from 073cd31 to ffae6d8 Compare March 10, 2026 11:11

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pradovic mentioned this pull request Mar 11, 2026

feat(nssa): support NSSA_ARTIFACTS_DIR env var in build.rs #341

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feat(sequencer): use logos-blockchain zone-sdk

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pradovic force-pushed the pg/zone-sdk-lez branch from 3baa249 to 5191370 Compare March 18, 2026 15:24

lints

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pradovic mentioned this pull request Mar 19, 2026

chore(indexer): use newer logos-blockchain-node docker image for indexer tests #398

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pradovic assigned Arjentix and pradovic and unassigned pradovic Apr 18, 2026

merge master

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pradovic unassigned Arjentix Apr 29, 2026

pradovic added 6 commits April 29, 2026 11:06

indexer stream

81a9ec4

use new docker image

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new image

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tests pass

c27e30f

cargo deny

7aecc4f

checkpoints

798b898

pradovic changed the title ~~feat(sequencer, indexer): Use zone-sdk instead of bedrock client POC~~ feat(sequencer, indexer): Use zone-sdk instead of bedrock client Apr 29, 2026

pradovic marked this pull request as ready for review April 29, 2026 12:06

pradovic requested review from Arjentix, davidrusu, moudyellaz and schouhy April 29, 2026 12:10

moudyellaz requested a review from Pravdyvy April 29, 2026 12:20

pradovic added 5 commits April 29, 2026 14:38

clippy

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clippy

9f64686

remove indexer dep from sequencer:

265a269

merge main

0920e08

machete

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Pravdyvy approved these changes Apr 30, 2026

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Arjentix reviewed Apr 30, 2026

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pradovic added 2 commits May 1, 2026 09:12

address comments

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unstaged file

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	pub fn clean_pending_blocks_up_to(&self, last_finalized: u64) -> DbResult<()> {
	pub fn clean_pending_blocks_up_to(&self, last_finalized: BlockId) -> DbResult<()> {

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🎯 Purpose

⚙️ Approach

🧪 How to Test

🔗 Dependencies

🔜 Future Work

📋 PR Completion Checklist

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pradovic commented Mar 9, 2026 •

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pradovic May 1, 2026 •

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