OpenZeppelin/Event-Scanner

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A lightweight highly performant event scanner built in rust

Stars: 19
Forks: 7
Open beginner issues: 0
Indexed issues: 21
Avg merge: 2h 15m
Merged PRs (30d): 4

Dominant language: Rust
License: MIT
Last GitHub push: Sep 16, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

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21 open issues indexed

test: Add Subscription Test Confirming HTTP providers (with `http-subscription` feature) work Open

type: test

Difficulty 3/5 1-2 days Newbie friendliness 25/100

OpenZeppelin/Event-Scanner#333 · Opened Mar 9, 2026
Add HTTP Subscription Bench Open

type: test

Difficulty 3/5 1-2 days Newbie friendliness 25/100

OpenZeppelin/Event-Scanner#332 · Opened Mar 9, 2026
Investigate Whether Alloy's Existing Fallback + Retry Logic Covers All Necessary Features and Makes RobustProvider Redundant Open

breaking change type: refactor

OpenZeppelin/Event-Scanner#310 · 3 comments · 1 assignee · Opened Jan 26, 2026
Update Tests So That The Node They're Running Against is Configurable Open

priority: medium type: ci type: test

Difficulty 4/5 3-5 days Newbie friendliness 35/100

OpenZeppelin/Event-Scanner#299 · Opened Jan 13, 2026
Make `max_concurrent_fetches` apply to all listeners collectively, not per listener Open

type: bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

OpenZeppelin/Event-Scanner#287 · Opened Dec 25, 2025
Add support for pending blocks in Latest and Historic Modes Open

priority: low status: needs discussion type: enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

OpenZeppelin/Event-Scanner#244 · Opened Dec 10, 2025
Update _src/event_scanner/scanner/common.rs_ Function Signatures To Support Mocking Behavior Open

type: refactor

Difficulty 4/5 3-5 days Newbie friendliness 35/100

OpenZeppelin/Event-Scanner#241 · Opened Dec 9, 2025
Optimise reorg check in CollectLatest mode by deferring to end of collection Open

type: refactor

Difficulty 5/5 Over a week Newbie friendliness 25/100

OpenZeppelin/Event-Scanner#237 · 1 comment · Opened Dec 8, 2025
Investigate potential flaky test test_to_block_above_latest_returns_error and test_subscription_lagged_error Open

priority: critical type: bug type: test

Difficulty 4/5 3-5 days Newbie friendliness 25/100

OpenZeppelin/Event-Scanner#236 · 3 comments · Opened Dec 8, 2025
Block Range Scanner in Historic and Latest Events Modes Should Expose an Ack-Channel To Calculate the Next Block Range Open

type: enhancement

Difficulty 4/5 3-5 days Newbie friendliness 45/100

OpenZeppelin/Event-Scanner#218 · 1 comment · Opened Dec 3, 2025
Refactor reorg detection to use ring buffer parent hash verification Open

priority: medium type: refactor

Difficulty 5/5 Over a week Newbie friendliness 35/100

OpenZeppelin/Event-Scanner#214 · Opened Dec 1, 2025
Switch the File Structure to the One Recommended in The Rust Book Open

type: refactor

Difficulty 3/5 1-2 days Newbie friendliness 45/100

OpenZeppelin/Event-Scanner#207 · Opened Nov 25, 2025
Specify Minimal Dependency Versions Compatible with `event-scanner` Instead of Latest Versions Open

type: build type: ci

Difficulty 4/5 3-5 days Newbie friendliness 52/100

OpenZeppelin/Event-Scanner#204 · Opened Nov 24, 2025
fix: Figure Out How to Handle `to_block(block_hash)` being reorged during historic streaming Open

status: needs discussion type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 20/100

OpenZeppelin/Event-Scanner#194 · 1 comment · Opened Nov 19, 2025
fix: Using Block Hash for `from_block`: Handle Unlikely Edge Case that a Reorg Happens Between Scanner Being Started and The First Logs Being Fetched Open

type: enhancement type: refactor

Difficulty 4/5 3-5 days Newbie friendliness 45/100

OpenZeppelin/Event-Scanner#193 · Opened Nov 19, 2025
`latest` and `sync::from_latest` Should Allow Specifying "Anchor Event Filters" To Determine the Starting Point, But Stream Other Events Open

type: feature

Difficulty 4/5 3-5 days Newbie friendliness 42/100

OpenZeppelin/Event-Scanner#184 · 1 comment · Opened Nov 14, 2025
`EventFilter` Should Include `.count()` That Limits the Number of Events Streamed in Any Mode Open

type: feature

Difficulty 3/5 1-2 days Newbie friendliness 45/100

OpenZeppelin/Event-Scanner#183 · Opened Nov 14, 2025
Add `transaction_index` Scanner Field to Scanners That Rely on `from_block` Open

status: needs discussion type: feature

Difficulty 3/5 1-2 days Newbie friendliness 48/100

OpenZeppelin/Event-Scanner#179 · Opened Nov 13, 2025
feat: Support Multiple Event Filters for a Single Event Stream Open

type: feature

Difficulty 4/5 3-5 days Newbie friendliness 42/100

OpenZeppelin/Event-Scanner#169 · Opened Nov 10, 2025
ref: Error Messages Should be More Descriptive, i.e. by Containing Context Where They Occurred Open

priority: low type: enhancement type: refactor

Difficulty 4/5 3-5 days Newbie friendliness 45/100

OpenZeppelin/Event-Scanner#130 · Opened Oct 18, 2025
test: Add Robustness Tests Open

priority: medium type: test

Difficulty 3/5 1-2 days Newbie friendliness 25/100

OpenZeppelin/Event-Scanner#66 · Opened Sep 25, 2025

OpenZeppelin/Event-Scanner

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