Tfchain graphql

Subsquid is used to index and provide a graphql interface on top of tfchain.

Concept

The substrate events are processed in a multi-step pipeline:

Tfchain => Squid Indexer => Indexer GraphQL gateway => Squid Processor => Database => Query Node GraphQL endpoint

indexer - docker-compose setup for the indexer
db - Processor db migration files
scripts - Scripts for generating initial state and development scripts
src - Source
- mappings - Mapper functions for the indexer data
- model - Generated models from the schema.graphql file
- types - Type files that require manual edit if the schema changes / or chain types change
- processor.ts - Processor entrypoint
typegen - Where the declaration files are generated from (used for development)
- tfchainVersions.jsonl - Generated tfchain runtime versions and their data
- typegen.json - Typegen config
- typesBundle.json - Typegen bundle config
schema.graphql - The graphql schema file, changes to this file will results in changes to the models (src/models)