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diff --git a/ops/federation.md b/ops/federation.md new file mode 100644 index 0000000..0fe5e57 --- /dev/null +++ b/ops/federation.md @@ -0,0 +1,61 @@ +--- +title: GraphQL Federation roll-out plan +--- + +This document outlines the process in which SourceHut plans to roll out GraphQL +Federation. + +1. Audit usage of user IDs across services + + As part of the GraphQL Federation roll-out, user IDs will need to be + streamlined to match those of meta.sr.ht. Audit all usages of user IDs to + ensure that none will be affected by this change. + +1. Test user ID migration and rollback process + + Thoroughly test the migration and rollback process for streamlining user IDs + so that the upgrade can be reverted in case of problems. + +1. Migrate user IDs + + Once testing has been completed, proceed with the migration process. + +1. Audit usage of GraphQL queries + + Audit the internal usage of GraphQL queries across services. These will need + to be updated to use the gateway once GraphQL federation is rolled out. + +1. Update services to support GraphQL federation + + meta.sr.ht, todo.sr.ht, and hub.sr.ht will be the first services to support + GraphQL federation. This will involve the implementation of a new GraphQL API + for hub.sr.ht. + +1. Bring up the GraphQL API gateway + + The GraphQL API gateway will be brought online. Individual APIs for each + service will remain accessible for the short term. + +1. Redirect internal GraphQL queries to use the gateway + + Redirect any internal GraphQL queries which target meta.sr.ht or todo.sr.ht + to target the API gateway instead. core.sr.ht's `srht.graphql` package can be + modified to achieve this. + +1. Sunset meta.sr.ht and todo.sr.ht APIs + + The meta.sr.ht and todo.sr.ht GraphQL APIs will no longer be accessible to + the public. The hub.sr.ht GraphQL API should never be accessible in the first + place. All queries for these services must go through the gateway. + +1. Rewrite the hub.sr.ht frontend to use GraphQL + + hub.sr.ht is a good target for validating the design of the federated graph + since it is a relatively simple service which aggregates data from other + services. Rewrite its frontend to use GraphQL for all operations. + +1. Update remaining services + + After validating the design of the gateway, slowly update more services to + support GraphQL federation until all queries are made through the GraphQL + gateway. |