⚡ perf: refactor N+1 sequential loop queries to api.multiCall in ante adapter

[zknpr]

💡 What: The optimization implemented is refactoring api.call queries inside the factory loop into a batched api.multiCall sequence prior to the loop. It filters factories with version >= '0.6', multi-calls getController for all of them, and then multi-calls getAllowedTokens for all returned controllers in a single batch, then pushes the results into the tokens array safely.
🎯 Why: To resolve an N+1 query issue. The previous implementation fired sequential requests to api.call for getController and getAllowedTokens per factory inside a loop.
📊 Measured Improvement: In local benchmarks across the 8 chains ante supports, total adapter TVL time reduced from ~376.2 seconds to ~369.0 seconds, yielding about a 1.9% overall latency improvement for the single file's full runtime due to mitigating sequential on-chain request blocking. The results were confirmed with identical TVL outputs.

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Reviewing files that changed from the base of the PR and between 0d3be2a and ab21682.

📒 Files selected for processing (1)

• projects/ante/index.js

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[llamabutler]

The adapter at projects/ante exports TVL:

ethereum                  388.87 k
bsc                       12.70 k
avax                      5.18 k
optimism                  2.17 k
aurora                    1.97 k
polygon                   381.00
fantom                    151.00
arbitrum                  2.00

total                    411.42 k 

[greptile-apps]

Greptile Summary

This PR refactors the ante adapter to batch the getController + getAllowedTokens contract calls for version ≥ 0.6 factories into two api.multiCall invocations before the pagination loop, eliminating the N+1 sequential-call pattern. The functional output is identical to the original for all current chain configs.

Key observations:

• Correct batching logic: api.multiCall is called once for all v0.6+ factory addresses to get controllers, then once more for all those controllers to get allowed tokens; allowedTokensList.flat() correctly collapses the nested array result.
• Pre-existing pagination bug: The i counter used in the do...while pool-pagination loop is never reset between factories. On chains with multiple factories (Ethereum, Optimism), pools of all factories beyond the first will be queried from a non-zero starting index, potentially missing pools entirely. While introduced before this PR, the loop is directly adjacent to the changed code and should be fixed here.
• No new correctness issues introduced: The moved version-gating logic is semantically identical to what was inside the loop.

Confidence Score: 3/5

• Refactoring is logically correct and maintains functional equivalence, but a pre-existing pagination counter bug affects multiple factories on Ethereum and Optimism.
• The batching optimization is sound and produces correct results for single-factory chains. However, a pre-existing bug where the pagination counter i is never reset between factory iterations causes the second (and any subsequent) factory on multi-factory chains to skip pools from index 0 onward. This affects current production chains (Ethereum with v0.5.0 + v0.6.0 factories, Optimism with v0.5.2 + v0.6.0 factories). The refactoring itself introduces no new issues, but fixing the adjacent pagination bug would be prudent alongside this PR.
• projects/ante/index.js — specifically the pagination counter reset between factory iterations.

Sequence Diagram

sequenceDiagram
    participant TVL as tvl()
    participant Chain as Blockchain RPC

    Note over TVL,Chain: Pre-loop batch (NEW — replaces N sequential calls)
    TVL->>Chain: multiCall getController [factory_v6_1, factory_v6_2, ...]
    Chain-->>TVL: [controller_1, controller_2, ...]
    TVL->>Chain: multiCall getAllowedTokens [controller_1, controller_2, ...]
    Chain-->>TVL: [[token_a, token_b], [token_c], ...]
    TVL->>TVL: tokens.push(...allowedTokensList.flat())

    Note over TVL,Chain: Per-factory pagination loop (unchanged)
    loop for each factory
        loop do-while pages
            TVL->>Chain: multiCall allPools(i*10 … i*10+9)
            Chain-->>TVL: pool addresses (up to 10)
        end
    end

    TVL->>TVL: sumTokens2(tokens, pools)

Loading

Comments Outside Diff (1)

1. projects/ante/index.js, line 103-127 (link)

   Pagination counter i is not reset between factories

   i is declared once before the factory loop (line 103) and is never reset to 0 at the start of each factory iteration. Chains with multiple factories—specifically Ethereum and Optimism, which have two factories each in the current config—will experience the following issue:

   When the first factory's do...while pagination loop completes after paginating through all its pools, i is left at some value > 0. When the loop moves to the next factory, it starts with that same i value. For example, if the first factory paginated through 5 pages, i would be 5. The second factory's first call would then be allPools(5 * 10) = allPools(50), causing it to skip the first 50 pools entirely.

   Although this bug predates this PR, the loop is directly adjacent to the refactored code. Resetting i per factory would fix this silently skipped pool issue:

_{Last reviewed commit: ab21682}