Weekly update 2021-05-13

[frol]

Last week update is here: #4289

Done

• near_rewards 🆕 by @khorolets:
  • exposed epoch progress
• RPC-on-demand 🆕 by @chefsale:
  • frontend part is done
• indexer-for-explorer:
  • denormalized Indexer for Explorer database to enable SQL queries performance optimization for Wallet, Explorer, and partners (implemented and migrated by @khorolets) Denormalize action_receipt_actions table in order to improve common queries performance near-indexer-for-explorer#87
• balances:
  • further clarified the documentation for lockup contract (@telezhnaya) docs(lockup-contract): refactored README for better clarity core-contracts#144 and lockup: add vesting info, add graphs with schedule to the doc docs#691
  • explored various strategies on how to compute the circulating supply (@telezhnaya) How should we calculate circulating supply? near-indexer-for-explorer#85
• nearcore:
  • drafted a PR of decoupling neard into neard (bin) and nearcore (lib) crates (@miraclx) refactor(neard): decouple into individual crates #4292
  • designed structured errors through JSON RPC and started implementing it (@khorolets) nearcore doesn't return structured errors for most use cases of API #2976
• explorer:
  • finalized the nodes page redesign implementation (@shelegdmitriy) feat(frontend): Implementation of new design on Nodes page near-explorer#613
  • drafted a PR to expose protocol configuration information on Stats page feat(frontend): expose protocol configuration on stats page near-explorer#625
• operations:
  • resized mainnet archival nodes, fix backup jobs after that change (@mhalambek)
  • deployed Aurora mainnet instances (@mhalambek)
  • fixed testnet Aurora instances after incident past week (@mhalambek)
  • deployed 20 debug nodes for testnet (@mhalambek)
  • updated testnet and mainnet workflow which updates by node type, rpc->validators->backups (@mhalambek)
  • implemented Ansible automation for updating the indexer binary (@chefsale)
  • added the terraform automated machines for mainnet (@chefsale)
  • coordinated Wasmer 1.0 rollout with (@chefsale, @mhalambek, and @matklad)

Plans

• near_rewards 🆕 by @khorolets:
  • show diffs in rewards comparing to prev epoch
  • make near_rewards suitable for non-lockups staking as well
• RPC-on-demand 🆕 by @chefsale:
  • implement service contracts
  • implement authentication
• nearcore
  • resolve the long-standing bug of telemetry getting stuck (@mhalambek) Telemetry sending stuck once and never deliver after that: "not a result of an error" #2798
  • finalize decoupling neard into neard (bin) and nearcore (lib) crates and fix the root workspace along its way (@miraclx) Decouple nearcore into a lib-crate #4233
  • finalize design exposing structured errors through JSON RPC and implement it (@khorolets) nearcore doesn't return structured errors for most use cases of API #2976
• balances:
  • solidify and land lockup contract documentation PRs (@telezhnaya) docs(lockup-contract): refactored README for better clarity core-contracts#144 and lockup: add vesting info, add graphs with schedule to the doc docs#691
  • finalize the strategy we want to use to compute circulation supply (@telezhnaya) How should we calculate circulating supply? near-indexer-for-explorer#85
• explorer
  • land the nodes page redesign implementation (@frol) feat(frontend): Implementation of new design on Nodes page near-explorer#613
  • expose protocol configuration information on Stats page feat(frontend): expose protocol configuration on stats page near-explorer#625
  • implement circulating supply in JS for Explorer (@telezhnaya) Compute Circulating Supply and expose via backend near-explorer#489
• operations:
  • implement a revert script automation for deployment metadata (@chefsale)

Discussion

• denormalization caused downtime on Wallet and Explorer:
  • @frol: Indeed, we tried to make it non-disruptive and split the whole migration into chunks, but even the first chunk was too big. The latter migrations were done in a non-disruptive way and neither Wallet nor Explorer users noticed how 5-hour-long migration went through.