feat(meter-aggregator): bounded meter aggregation with rollups and inline pruning#40
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elizabetheonoja-art merged 2 commits intoJun 25, 2026
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…line pruning Add a new meter-aggregator Soroban contract that prevents unbounded raw reading accumulation from exhausting per-device contract storage. - Raw readings stored by monotonic seq (O(1) append, time-ordered) - Each reading folded into hourly + daily rollup buckets (overflow-checked) - Inline amortized pruning via watermark cursor, batch-capped per call - 7-day raw retention (MAX_RAW_RETENTION_SECS), PRUNE_BATCH_SIZE=10 - get_aggregated_volume reads tiered: daily -> hourly -> raw - rollup_day reclaims a completed day's hourly buckets - Tests: rollup correctness, overflow, prune boundary, batch limit, storage-exhaustion prevention Registered as a workspace member in contracts/Cargo.toml.
…gator-rollup-pruning # Conflicts: # contracts/Cargo.toml
elizabetheonoja-art
approved these changes
Jun 25, 2026
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Closes #10
RawReading(device, seq)with amonotonic sequence number → O(1) append, seq order == time order.
submit_reading, the value is folded into the matching hourly anddaily rollup buckets using overflow-checked
i128 checked_add.MAX_RAW_RETENTION_SECS(7 days)are deleted during submission, amortized O(1) via a watermark cursor
PruneCursor(device), capped atPRUNE_BATCH_SIZE(10) per call.get_aggregated_volumereads tiered: daily → hourly → live raw fallback.rollup_day(admin) reclaims a completed day's redundant hourly buckets.Files
contracts/meter-aggregator/src/{constants,types,storage,lib,test}.rscontracts/meter-aggregator/{Cargo.toml,README.md}contracts/Cargo.toml(registers the new workspace member)