feat: adopt MCP v1.1.0 and RAG v2.0.0 by tsivaprasad · Pull Request #465 · pgEdge/control-plane

tsivaprasad · 2026-09-09T12:31:54Z

Summary

This PR updates the default service versions to MCP v1.1.0 and RAG v2.0.0, along with their new configuration options: Gemini provider support, RAG reranking, and MCP audit tracing.

Changes

Register mcp@1.1.0 and rag@2.0.0 in the version manifest as "default": true; mcp@1.0.0/rag@1.0.0 remain registered and pinnable.
Add RAG rerank (Voyage-only) and allow_include_sources per-pipeline config. The rerank stage shares a pipeline's existing Voyage key file when embedding_llm already uses Voyage, otherwise gets its own _rerank.key file.
Add Gemini as a supported provider for both services: RAG's embedding_llm/rag_llm, and MCP's llm_provider/embedding_provider/kb_embedding_provider. Anthropic is rejected as a RAG embedding provider (confirmed against upstream — no embeddings API).
Add MCP audit trace support (audit_trace_enabled, audit_trace_metadata_only), writing to the existing /app/data bind mount — no new mount.
Replace RAG's healthcheck with a real HTTP probe against the new /v1/health endpoint (still bash-builtins-only via /dev/tcp, since the runtime image has no curl/wget).
Pin documentation examples to explicit versions instead of "latest", document all new fields/defaults, and note RAG 2.0.0's hybrid-search behavior change (vector arm is no longer silently dropped).

Testing

Verification:

Create DB

cp1-req create-database < /tmp/create_demo.json

HTTP/1.1 200 OK
Content-Type: application/json
Date: Wed, 09 Sep 2026 05:58:31 GMT

{
  database: {
    created_at: "2026-09-09T05:58:31Z"
    id: "storefront-plat-733-demo"
    spec: {
      database_name: "storefront"
      database_users: [
        {
          attributes: ["SUPERUSER", "LOGIN"]
          db_owner: true
          username: "admin"
        }
        {
          attributes: ["LOGIN"]
          db_owner: false
          username: "web_anon"
        }
      ]
      nodes: [
        {
          host_ids: ["host-1"]
          name: "n1"
        }
      ]
      postgres_version: "17.9"
      services: [
        {
          config: {
            defaults: {
              token_budget: 2000
              top_n: 10
            }
            pipelines: [
              {
                allow_include_sources: true
                description: "Public support articles pipeline - reranked, sources allowed"
                embedding_llm: {
                  model: "text-embedding-3-small"
                  provider: "openai"
                }
                name: "support-docs"
                rag_llm: {
                  model: "claude-sonnet-4-5"
                  provider: "anthropic"
                }
                rerank: {
                  model: "rerank-2"
                  provider: "voyage"
                  top_k: 5
                }
                search: {
                  hybrid_enabled: true
                  vector_weight: 0.7
                }
                tables: [
                  {
                    table: "support_docs_content_chunks"
                    text_column: "content"
                    vector_column: "embedding"
                  }
                ]
                token_budget: 4000
                top_n: 15
              }
              {
                allow_include_sources: false
                description: "Internal product catalog pipeline - Gemini end to end, no source exposure"
                embedding_llm: {
                  model: "gemini-embedding-001"
                  provider: "gemini"
                }
                name: "product-catalog"
                rag_llm: {
                  model: "gemini-2.5-flash"
                  provider: "gemini"
                }
                tables: [
                  {
                    id_column: "id"
                    table: "product_catalog_content_chunks"
                    text_column: "content"
                    vector_column: "embedding"
                  }
                ]
              }
            ]
          }
          connect_as: "admin"
          host_ids: ["host-1"]
          port: 0
          service_id: "rag"
          service_type: "rag"
          version: "2.0.0"
        }
        {
          config: {
            allow_writes: false
            audit_trace_enabled: true
            audit_trace_metadata_only: true
            embedding_model: "voyage-3"
            embedding_provider: "voyage"
            kb_enabled: false
            llm_enabled: true
            llm_model: "gemini-2.5-flash"
            llm_provider: "gemini"
          }
          connect_as: "admin"
          host_ids: ["host-1"]
          port: 0
          service_id: "mcp"
          service_type: "mcp"
          version: "1.1.0"
        }
        {
          config: {
            db_anon_role: "web_anon"
            db_schemas: "public"
          }
          connect_as: "admin"
          host_ids: ["host-1"]
          port: 0
          service_id: "postgrest"
          service_type: "postgrest"
          version: "14.5"
        }
      ]
      spock_version: "5"
    }
    state: "creating"
    updated_at: "2026-09-09T05:58:31Z"
  }
  task: {
    created_at: "2026-09-09T05:58:31Z"
    database_id: "storefront-plat-733-demo"
    entity_id: "storefront-plat-733-demo"
    scope: "database"
    status: "pending"
    task_id: "01a084bf-1808-7697-a565-48150bc32316"
    type: "create"
  }
}

Confirmed services

 control-plane git:(feature/PLAT-733/adopt-mcp-rag-versions) ✗ docker ps --filter "name=storefront-plat-733-demo" --format '{{.Names}}\t{{.Image}}\t{{.Status}}'

storefront-plat-733-demo-rag-689qacsi.1.n6t124cocmqxd5p34her5lfey	ghcr.io/pgedge/rag-server:2.0.0	Up About a minute (healthy)
storefront-plat-733-demo-postgrest-689qacsi.1.5yvc88ykiafpierjzsf6fb7zv	ghcr.io/pgedge/postgrest:14.5	Up About a minute (healthy)
storefront-plat-733-demo-mcp-689qacsi.1.z8hgio0vbaay9dp94s3k4zywt	ghcr.io/pgedge/postgres-mcp:1.1.0	Up About a minute (healthy)

Checklist

Tests added or updated (unit and/or e2e, as needed)
Documentation updated (if needed)

PLAT-733

coderabbitai · 2026-09-09T12:32:08Z

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📒 Files selected for processing (2)

e2e/rag_service_test.go
e2e/service_provisioning_test.go

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e2e/rag_service_test.go
e2e/service_provisioning_test.go

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📝 Walkthrough

Walkthrough

The pull request adds pinned MCP 1.1.0 and RAG 2.0.0 versions, Gemini provider support, MCP audit tracing, RAG reranking, source inclusion, stricter validation, HTTP health checks, documentation, manifests, and end-to-end tests.

Changes

MCP provider and audit configuration

Layer / File(s)	Summary
MCP provider and audit contracts `server/internal/database/mcp_service_config.go`, `server/internal/database/mcp_service_config_test.go`, `server/internal/api/apiv1/validate_test.go`, `docs/services/mcp.md`, `docs/development/supported-services.md`	MCP configuration accepts Gemini for LLM, embedding, and knowledge-base providers. It adds Gemini credentials and audit-trace fields with validation and tests. Documentation and examples reflect MCP 1.1.0.
MCP YAML generation and pinned versions `server/internal/orchestrator/swarm/mcp_config.go`, `server/internal/orchestrator/swarm/mcp_config_test.go`, `server/internal/orchestrator/swarm/version-manifest.json`, `e2e/service_provisioning_test.go`	MCP YAML generation emits Gemini credentials and audit-trace settings. End-to-end tests cover pinned provisioning and version updates.

RAG pipeline configuration

Layer / File(s)	Summary
RAG pipeline and provider contracts `server/internal/database/rag_service_config.go`, `server/internal/database/rag_service_config_test.go`, `docs/services/rag.md`	RAG configuration adds Gemini providers, reranking, source inclusion, and a 63-character pipeline-name limit. Validation covers provider keys, rerank key reuse, provider mismatches, and `top_k`.
RAG YAML, key files, and health checks `server/internal/orchestrator/swarm/rag_config.go`, `server/internal/orchestrator/swarm/rag_config_test.go`, `server/internal/orchestrator/swarm/rag_service_keys_resource.go`, `server/internal/orchestrator/swarm/rag_service_keys_resource_test.go`, `server/internal/orchestrator/swarm/service_spec.go`, `server/internal/orchestrator/swarm/version-manifest.json`, `e2e/rag_service_test.go`	RAG YAML generation emits rerank and source-inclusion settings and maps Gemini keys. Rerank keys are created or reused according to the embedding provider. RAG health checks call `/v1/health` every 30 seconds with a 20-second timeout.

Priority: ➖ Normal

Merge Risk: ⚪ Minimal · up to 66544

This updates MCP and RAG defaults while retaining prior pinnable versions and adds the described provider, configuration, tracing, and health-check support. No concrete current-head merge-blocking risk remains.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 26.67% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 60 functions across 14 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title is concise, follows Conventional Commits format, and clearly identifies the primary version updates for MCP and RAG.
Description check	✅ Passed	The description includes the required Summary, Changes, Testing, and Checklist sections. It accurately covers the implementation, verification results, and linked issue. The Notes for Reviewers sectio…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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🔧 golangci-lint (2.13.2)

level=error msg="[linters_context] typechecking error: build constraints exclude all Go files in /e2e"

_{A rabbit pins versions neat and bright
Gemini keys hop into sight
Audit traces leave a trail
Rerankers sort the search detail
Health checks knock on /v1/health
And tests guard the service shelf}

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codacy-production · 2026-09-09T12:32:52Z

Up to standards ✅

🟢 Issues 1 medium

Results:
1 new issue

Category Results

Complexity 1 medium

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🟢 Metrics 31 complexity · -2 duplication

Metric Results

Complexity 31

Duplication -2

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Actionable comments posted: 1

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Inline comments:
In `@e2e/rag_service_test.go`:
- Around line 826-828: Require non-nil si.Status and si.Status.ImageVersion in
both affected assertions at e2e/rag_service_test.go lines 826-828 and 942-944,
then assert that the dereferenced ImageVersion contains “2.0.0”; do not
conditionally skip the version check when either value is absent.

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📒 Files selected for processing (18)

docs/development/supported-services.md
docs/services/mcp.md
docs/services/rag.md
e2e/rag_service_test.go
e2e/service_provisioning_test.go
server/internal/api/apiv1/validate_test.go
server/internal/database/mcp_service_config.go
server/internal/database/mcp_service_config_test.go
server/internal/database/rag_service_config.go
server/internal/database/rag_service_config_test.go
server/internal/orchestrator/swarm/mcp_config.go
server/internal/orchestrator/swarm/mcp_config_test.go
server/internal/orchestrator/swarm/rag_config.go
server/internal/orchestrator/swarm/rag_config_test.go
server/internal/orchestrator/swarm/rag_service_keys_resource.go
server/internal/orchestrator/swarm/rag_service_keys_resource_test.go
server/internal/orchestrator/swarm/service_spec.go
server/internal/orchestrator/swarm/version-manifest.json

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feat: adopt MCP v1.1.0 and RAG v2.0.0

3fbc1c7

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feat: adopt MCP v1.1.0 and RAG v2.0.0 - #465

feat: adopt MCP v1.1.0 and RAG v2.0.0#465
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