@cardano-graphql/server - npm Package Versions

2.0.0

This new major version brings the first round of Shelley-era features to the API, introduces a new genesis file API package, and hardens the migrations and metadata handling. This version is required for transitioning through the upcoming Shelley hard fork.

Compatible with:

• cardano-node: 1.18.0
• cardano-db-sync: 3.1.0 - Note: The database must be recreated using the new version.

Features

New Queries

• stakePools, stakePools_aggregate
• delegations, delegations_aggregate
• stakeRegistrations, stakeRegistrations_aggregate
• stakeDeregistrations, stakeDeregistrations_aggregate
• withdrawals, withdrawals_aggregate
• genesis
• Metadata and SQL migrations are now performed within the application layer, and make the service immune to schema being removed should cardano-db-sync restart. using the Hasura CLI, which is included in the Dockerfile and NixOS service, however outside of this you must install and place hasura on PATH.
• A new API package @cardano-graphql/api-genesis allows access to the network genesis files. It's integrated into the server, with the config exposed as environment variables. As usual, the docker-compose.yaml serves as a good reference.

Breaking Changes :warning:

• The docker-compose file now mounts configuration managed in the repository, restoring the usual separation of concerns with service configuration. The Docker images still have the configuration included at build time, however in practice, being ready to managing your own configuration if required is a good strategy. Simply copying the top level config and committing to source control gives you full control over the services using their native interface.

Removed fields

• Cardano.networkName removed. Use network magic from the genesis API identify networks.
• Cardano.protocolConst, Cardano.slotDuration, Cardano.startTime, Cardano.slotsPerEpoch removed. Access this info from the Genesis API.
• cardanoDbSync.slotDiffFromNetworkTip removed in reponse to a change in strategy for determining sync status with cardano-db-sync determining sync status relies on a chain that has produce

Changed fields

Dates we're previously formatted to ISO 3339, however ISO 8601 is being adopted with this release for alignment with the Shelley genesis file format and simplification when the precision is not required.

• 2017-10-03T21:43:51.000Z -> 2017-10-03T21:43:51Z
• Block.createdBy -> Block.slotLeader links to an object, with a nullable stakePool field. For previous behaviour, Block.slotLeader.description can be used, however the description prefixes have changed upstream from SlotLeader to ByronGenesis
• Block.createdAt -> Block.forgedAt
• Block.slotWithinEpoch -> Block.slotInEpoch

Chores

• Migrations have been squashed into a single step.

1.0.0

Features

• Optimised versions of some key aggregated queries:
  • Block.transactionsCount
  • Epoch.transactionsCount
  • Epoch.blocksCount
• Cardano.networkName
• Transaction.size
• Transaction.blockIndex
• Allow explicit ordering of Transaction.outputs by their natural index
• Cardano now matches the postgres view, and is an improvement over the previous version which performed two queries.
• CLI tool cgql with commands to assist with Docker-based deployments, including init, snapshotting, and db rebuild.
• Establish relationships to easily access transaction and block information from inputs and outputs
  • TransactionInput.transaction
  • TransactionInput.sourceTransaction (where it was an output)
  • TransactionOutput.transaction
• CardanoDbMeta via Query.cardanoDbMeta exposes information to understand if the dataset is complete including: initialized, syncPercentage, and slotDiffFromNetworkTip. The epoch data is incomplete until initialized = true , which takes around 2 hours for the initial sync as of block number 4388632. syncPercentage or slotDiffFromNetworkTip provides progress.
• The codebase is now modularized to enable new API segments to be added alongside as an extension, composition of services for more use-cases, ability to import the executable schema and host on a different server. The packages are published, to npm, or can be built from source:
  • @cardano-graphql/server
  • @cardano-graphql/api-cardano-db-hasura
  • @cardano-graphql/client-ts
  • @cardano-graphql/cli
  • @cardano-graphql/util-dev
  • @cardano-graphql/util
• Packages are now managed via an offline npm package cache, to facilitate reproducible builds when the --offline flag is passed to yarn install

Breaking changes

• PostgreSQL views are now being managed in this codebase, so either switch to the new Docker image inputoutput/cardano-graphql-hasura, or use the Hasura CLI as demonstrated in the entrypoint This change was needed to be compatible with the migration strategy determind by cardano-db-sync, where the migrations need to be applied on each start of the service. The custom Docker image makes it possible to check your own docker-compose file into source control, as it supports Docker secrets, and also removes the requirement to clone this source repo to get data for mounting at runtime.
• Transaction and Block IDs are now labelled as hash, aligning with the domain terminology.
• Block.merkelRootHash -> Block.merkelRoot
• The aggregated and known very large numbers are now typed as String. Cardano JS has utilities to work with these return values, currently limited to currency conversion.
• Transaction.fee previously String, now BigInt
• Entrypoint for the service previously found in ./dist/index.js is now ./packages/server/dist/index.js after building.
• Cardano.blockHeight removed in favour of Cardano.tip.number, where tip = the most recent Block. This unlocks more information such as slotNo, and capability to traverse the chain etc.
• Dates are now coerced to RFC 3339 UTC date-time strings

Chores

• Updates to Hasura 1.2.1
• Improves CI process by consolidating the Jest snapshot files.