Join The Graph’s Core Devs meeting #10, happening tomorrow on Wednesday, February 2nd @ 7am PST. We will be covering a number of discussion topics that will be moderated by The Graph’s Core Dev teams to generate open community dialogues. The meeting link is: Launch Zoom Meeting
Discussion Topics:
Multi-chain integration with Firehose
Graph Node debug tool e2e demo with LimeChain
GraphQL API: new features & versioning impact
Indexer Software updates
GIP-0023: Subgraph ownership transfer using external NFT contract
The Core Devs call not only covers graph node related topics, but every research & development work in the Graph ecosystem. Everyone involved in that space is welcome to propose a topic for the Core Devs calls that you can introduce for discussions. This is a chance to connect and reflect on your work with other Core Devs in order to inform the community and gather feedback. If there is any content you would like us to add as discussion topics for next week, please feel to suggest them as a response in this thread. Thank you!
In Core Devs Meeting #10 we receive updates from the core development teams, learn about the Firehose SDK, explore new GraphQL API features, watch a demo from LimeChain and hear about the progress on a development starter toolkit for Graph Node.
Topics Include:
Developer Updates
Edge & Node
Figment
The Guild
Streaming Fast
Firehose SDK
LimeChain Subgraph Debug Tool
Graph Node Testing Experience
New GraphQL API Features
GraphQL validations have been merged
Upcoming GraphQL API features
LimeChain Demo | Subgraph Debug Tool
Graph Node Testing Experience
GIP–023
Detailed notes regarding each topic with timestamps can be found below.
Developer Updates (2:17)
Next week, 50 people from seven teams will attend an R&D developer retreat. Working groups between different teams are being formalized around a set of common focus areas. During the next core developers call, time will be dedicated to sharing information on some of these working groups.
Read below for the updates from each development team:
Edge & Node (2:17)
Risks, Problems, Help
Many PRs waiting to be deployed/merged (Waiting on POI investigations)
Many action items work in progress
Lots of open discussions (availability chain, architecture)
Availability Chain - Files from sources like IPFS may or may not actually be available. An availability chain is a chain that tracks if specific files are available for indexing, acting as a source of truth. This is required to have consistent, deterministic indexing of those sources by different indexers.
Achievements
POI/ query cross-checking MVP demo
Active
Pipelining database interactions (in review)
GraphQL prefetch optimizations (in review/testing)
Tendermint Testing (Firehose through graph-node/subgraph)
Working through OOM issues with Firehose
Updating documentation for Tendermint type generation
Dummy-Chain
Indexer Agent:
Filter unsupported subgraphs, add option to require supported subgraphs
Add max lifetime option in commands
Next Steps
Peer review of Tendermint PRs
Cosmos Hub integration
Collaboration with Streaming Fast on documentation
The Guild (9:58)
Risks, Problems, Help
· graph-node code reviews bottleneck
Achievements
Onboarded two new Guild members
GraphQL Validations Migration Guide
CLI tool
Bug Fixes
Awaiting Review
API versioning: Draft PR – waiting for initial review / versioning policy
GraphQL root __typename bug fix
Refactor static GraphQL
Filters: make comparisons case-insesitive
Active
· The Graph Client Architecture (with Yaniv)
· Relay-compliant GraphQL schema and improved pagination
· GraphQL Best Practices (website page)
· GraphQL- Codegen collaboration with Synthetix
o TS Query Builder – almost done
o AND/OR Filters
Next Steps
Update to latest GraphQL in graph-node
Introduction to the hosted service
The Graph Client sub-components
Client-side composition
Query Builder
Local/Offline query execution
Support GET requests
Streaming Fast (13:14)
Solana Work
Stability Testing
Implement fast boot mechanism
Near PR Ready
Firehose
Irreversibility index - done
Speed up linear processing
Starting accounts and events indexing work
Small bug fixes
NEAR protocol
Ethereum Testing
Firehose SDK (17:50)
The goal for the Firehose SDK is to empower development teams with the tools to kickstart their blockchain to be Firehose and The Graph ready. The SDK will be used to help new teams and team members visualize how the Firehose should be implemented for their chain. To achieve this, it utilizes a dummy chain.
The dummy chain is program that simulates a blockchain. It is non-network dependent and provides the basic information needed for testing. It will act as a lightweight end to end testing engine for development teams to simulate on-chain events without having to wait for the event to occur on mainnet.
New GraphQL API Features (25:00)
GraphQL Validations Have Been Merged
Needed to simplify implementation and avoid risky execution, reduces responses ambiguity
Almost 100% coverage
Migration CLI tool
@graphql-validate/cli is a simple CLI tool that will help validate GraphQL operations against a given schema
Upcoming Graph QL API Features
New Entities Filters
Filter by change block number
Filter and sort by child entity
AND/OR filters
Case-insensitive search
API Versioning
Every change in the GraphQL layer will result in a new version
Improved Schema & Pagination
Use connection types with cursors (improved pagination)
Use abstract “Node” interface to make it easier for GraphQL clients to implement caching
LimeChain Subgraph Debug Tool Demo (35:48)
The subgraph debug tool saves developers time during the debug process. Sometimes, when a subgraph is deployed, it fails at specific point in the syncing process. Typically, a developer would need to attempt to fix the problem, redeploy and wait for syncing to complete to see if the problem was fixed.
The subgraph debug tool allows developers to run their mappings using the store from the failed subgraph. It will run locally on the block the subgraph failed, so that developers can receive feedback on their attempts to fix the problem quickly.
The tool also allows developers to easily fork and build off existing subgraphs which enables a larger use case for the tool.
A tutorial video mini-series is being developed for the debug tool and will be uploaded to The Graph’s YouTube channel and documentation for its use will be uploaded to The Graph Docs.
Graph-Node Testing Experience (44:45)
The Graph has added multiple core development teams since launch. All these teams have their own unique workflow for testing and developing features for Graph Node, which brings the need for a toolset for new developers working on The Graph. Discussions on how to improve the development experience for new teams are taking place behind the scenes.
GIP–0018 Subgraph ownership transfer has been replaced by GIP–0023 due to the original GIP failing a quality audit. Technical revisions have been made to the original GIP and GIP–0023 will proceed to council voting in three days.
Stay Tuned!
Join us next month for The Graph’s Core Devs Meeting #11!
Keep up to date by joining discussions in the forum, following The Graph on Twitter or joining the Discord server.
For further discussion on the topics covered in The Graph’s Core Devs meetings, attend Indexer Office hours in the Graph Stage voice channel every Tuesday.
