feat(gitlab): add GraphQL client with adaptive pagination and work item status types

Introduce a reusable GraphQL client (`src/gitlab/graphql.rs`) that handles
GitLab's GraphQL API with full error handling for auth failures, rate
limiting, and partial errors. Key capabilities:

- Adaptive page sizing (100 → 50 → 25 → 10) to handle GitLab GraphQL
  complexity limits without hardcoding a single safe page size
- Paginated issue status fetching via the workItems GraphQL query
- Graceful detection of unsupported instances (missing GraphQL endpoint
  or forbidden auth) so ingestion continues without status data
- Retry-After header parsing via the `httpdate` crate for rate limit
  compliance

Also adds `WorkItemStatus` type to `gitlab::types` with name, category,
color, and icon_name fields (all optional except name) with comprehensive
deserialization tests covering all system statuses (TO_DO, IN_PROGRESS,
DONE, CANCELED) and edge cases (null category, unknown future values).

The `GitLabClient` gains a `graphql_client()` factory method for
ergonomic access from the ingestion pipeline.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

This commit is contained in:

Taylor Eernisse

2026-02-11 08:08:53 -05:00

parent 7d40a81512

commit dc49f5209e

6 changed files with 1372 additions and 1 deletions

									
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				@@ -45,6 +45,7 @@ rand = "0.8"

				sha2 = "0.10"

				flate2 = "1"

				chrono = { version = "0.4", features = ["serde"] }

				httpdate = "1"

				uuid = { version = "1", features = ["v4"] }

				regex = "1"

				strsim = "0.11"

feat(gitlab): add GraphQL client with adaptive pagination and work item status types

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