CHANGELOG.md

Changelog Chainlink External Adapters

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[0.3.0-rc.1] - 2021-6-30

This release marks the fruition of our recent External Adapter efficiency efforts.

For more details see the public node operator guide here.

Added

• New performance improving middleware to the core EA framework:

  • Cache-warming
  • Rate-limiting
  • Websockets

• Metrics support

• Added support for EOD close prices on Finage, IEX Cloud, Twelvedata, Tiingo and Unibit

• New adapters:

  • expert-car-broker to get car prices
  • binance to get binance market data
  • sportsdataio to get sports data from sportsdata.io
  • vesper to get TVL from Vesper
  • linear-finance to calculate indexes for Linear Finance

Changed

• Conflux adapter sending transaction optimization
• Improved time resolution from days to seconds and smooth-out the effect of added strikes for crypto-volatility-index adapter
• Added a per-provider ratelimit reference
• Added Prometheus metrics
• tradingeconomics will now get stream data from TradingEconomics using a persistent WS connection
• make commands are now TypeScript files that can be run through yarn scripts

Removed

• Removed custom tradingeconomics-stream as WS support is not included into tradingeconomics adapter
• Removed serverless support (AWS Lambda & GPC Functions).

[0.2.0] - 2021-4-13

Added

• New adapters:
  • agoric to push results to the Agoric blockchain
  • therundown to get sports score data from TheRundown
  • tradingeconomics-stream to get stream data from TradingEconomics
  • blockstream to get Bitcoin height and difficulty
• Basic prometheus metrics endpoint

Changed

• Remaining non-2-step adapters migrated to TS
• Updated support for DIGG/BTC in Kaiko and Amberdata
• Updated base URL for GeoDB
• CMC now uses preset IDs instead of preset slugs
• Added support for tradermade in outlier-detection composite adapter
• Added support for overrides param in price adapters
• Improved time resolution from days to seconds and smooth-out the effect of added strikes for crypto-volatility-index adapter

[0.2.0-rc.1] - 2021-2-4

Added

• New adapters:

  • conflux to send conflux chain transaction
  • xbto to get BRN quotes
  • iv-outlier-detection to get IV values with outlier detection
  • taapi to get Trading Analysis data
  • stasis to get Circulating Supply of EURS
  • defi-pulse to calculate an accurate price for the Defi Pulse Index
  • finage to get Financial data from finage.co.uk
  • coincodex to get crypto prices from CoinCodex
  • coinranking to get crypto prices from Coinranking
  • crypto-volatility-index to calculate the CVI (Crypto volatility index)
  • btc.com to get on-chain balances from BTC.com
  • sochain to get on-chain balances from SoChain
  • dns-query to query DNS over HTTPS
  • dns-record-check to check whether some record provided exists on DNS
  • paxos to get Paxos asset supply attestations
  • outlier-detection: composite adapter to check for outlier values between multiple sets of data providers
  • dydx-stark to sign the input price data with your private STARK key, and send it to the destination endpoint.
  • apy-finance to calculate the TVL in APY Finance
  • token-allocation composite adapter to calculate the total price from a set of tokens
  • bitcoin-json-rpc: composite adapter for querying bitcoin blockchain stats(difficulty, height) according to the existing convention
  • iex-cloud to get stock and crypto market data from IEX Cloud
  • cfbenchmarks to get crypto benchmarks and indices
  • dxfeed-secondary to handle secondary mappings for the TSLA symbol
  • harmony to write transactions to the Harmony blockchain
  • tiingo to get end-of-day stock price data from Tiingo
  • geodb to get location data from GeoDB

• Added support for metadata in requests. This gives adapters access to the FM on-chain round state.

• Moves re-usable test behaviors & testing utils to a new package - @chainlink/adapter-test-helpers

• Added support for using query string parameters as input to adapters.

• Add a package re-usable adapter factory implementations to - @chainlink/ea-factories

• Added support for using multiple API Keys per-adapter

Fixed

• CMC adapter price query fixed for currencies where multiple currencies have the same symbol

Changed

• Oilprice adapters now accept a common request for Brent crude oil: {"market":"brent"}
• Market closure is now a composite adapter, and now follows the build instructions for composite adapters. Market now also supports using metadata.
• Coinlore now accepts an optional environment variable to set the default API endpoint
• Migrates @chainlink/ea-bootstrap and @chainlink/external-adapter packages to TS.
• Updates the following adapters with a second endpoint for getting an account's on-chain balance
  • amberdata
  • blockchair
  • cryptoapis
• dxFeed now uses OTC feeds for FTSE and N225, rather than licensed data feeds
• Migrated to Typescript
  • kaiko
  • marketstack
  • metalsapi
  • nikkei
  • poa-gasprice
  • polygon
  • nomics
  • openexchangerates
  • coinmarketcap
• synth-index adapter is now a composite adapter. Going forward there is only one instance of synth-index adapter built, one that you configure with the underlying data provider you wish to use.
• Removed
  • google-finance

Removed

• WTI Outlier detection and IV Outlier detection adapters are now covered in the Outlier detection composite adapter

[0.1.5] - 2021-2-2

• Cache key generator now ignores 'meta' metadata as default setting

[0.1.4] - 2020-10-30

Added

• New adapters:
  • linkpool to get ICE futures quotes
  • onchain to get ICE futures quotes
  • lcx to get BTC and ETH prices in USD or EUR

Fixed

• Local in-memory cache got broken in the last release, and was reinitialized on every request.
• amberdata adapter wasn't responding for some assets because they don't make cross-rates by default. Cross-rates are now included which enables this adapter to support markets like BNB/USD, not just the actual BNB/USDT.

[0.1.3] - 2020-10-29

Added

• Caching improvements:
  • Request coalescing support to mitigate the issue of requests for data coming in bursts and missing the cache.
  • Remote cache (Redis/ElastiCache) support, with adapter key grouping, to enable more efficient serverless deployments.
• Support for composite adapters:
  • composite/proof-of-reserves adapter combines multiple adapters to find total balance in custody for wBTC or renBTC protocols.
• New adapters:
  • wbtc-address-set to query wBTC custody address set.
  • renvm-address-set to query renVM protocol custody address set.
  • blockchain.com to fetch balances for a set of Bitcoin addresses.
  • blockcypher to fetch balances for a set of Bitcoin addresses.
  • reduce to reduce an array to a result. Different reducers are supported like: sum, product, average, median, min & max.
  • trueusd to query supply and issuance data for TrueUSD.
  • cryptoid to get chain difficulty measurement from different networks.
  • blockchair to get chain difficulty measurement from different networks.
  • bitso to get last 24 hours volume weighted average price (vwap) for multiple markets.
  • cryptomkt to get last transaction price for multiple markets.
  • satoshitango to get last bid price for multiple markets.
  • bitex to get volume weighted average price (vwap) for multiple markets.
  • orchid-bandwidth to get available bandwidth from Chainlink as service provider.
  • genesis-volatility to get implied volatility of an asset.
  • covid-tracker to query COVID-19 statistics.
  • lition to query the price in Euros per MWh for Lition.
  • coinlore to query the Bitcoin market dominance and market capitalization.
  • messari to query the Bitcoin market dominance.

Changed

• Improved logs.
• Prettier logs in development environment.

[0.1.2] - 2020-09-18

Changed

• Replaced alphavantage-sdr with alphachain adapter

[0.1.1] - 2020-09-18

Added

• CHANGELOG.md (this file), to keep track of changes between releases

Changed

• Gas adapters (amberdata-gasprice, anyblock-gasprice, etherchain, ethgasstation & poa-gasprice) now do not require speed param on input, but will use a sensible default.

Fixed

• Kaiko adapter endpoint fix

[0.1.0] - 2020-09-17

Initial external adapter release!