From dcae89f4048e595a2ecc3622b37ff76c0415f3c0 Mon Sep 17 00:00:00 2001 From: hsiegeln <37154749+hsiegeln@users.noreply.github.com> Date: Wed, 11 Mar 2026 16:19:09 +0100 Subject: [PATCH] docs(02-02): complete diagram rendering plan Co-Authored-By: Claude Opus 4.6 --- .planning/REQUIREMENTS.md | 2 +- .planning/STATE.md | 20 ++- .../02-02-SUMMARY.md | 146 ++++++++++++++++++ 3 files changed, 160 insertions(+), 8 deletions(-) create mode 100644 .planning/phases/02-transaction-search-diagrams/02-02-SUMMARY.md diff --git a/.planning/REQUIREMENTS.md b/.planning/REQUIREMENTS.md index 54ad965d..bb9e925f 100644 --- a/.planning/REQUIREMENTS.md +++ b/.planning/REQUIREMENTS.md @@ -39,7 +39,7 @@ Requirements for initial release. Each maps to roadmap phases. Tracked as Gitea - [x] **DIAG-01**: Server stores `RouteGraph` definitions with content-addressable versioning (hash-based dedup) (#20) - [x] **DIAG-02**: Each transaction links to the `RouteGraph` version that was active at execution time (#21) -- [ ] **DIAG-03**: Server renders route diagrams from stored `RouteGraph` definitions (nodes, edges, EIP patterns) (#22) +- [x] **DIAG-03**: Server renders route diagrams from stored `RouteGraph` definitions (nodes, edges, EIP patterns) (#22) ### Security diff --git a/.planning/STATE.md b/.planning/STATE.md index 341a2299..adf7f500 100644 --- a/.planning/STATE.md +++ b/.planning/STATE.md @@ -26,11 +26,11 @@ See: .planning/PROJECT.md (updated 2026-03-11) ## Current Position Phase: 2 of 4 (Transaction Search + Diagrams) -Plan: 1 of 3 in current phase -Status: Plan 02-01 Complete -Last activity: 2026-03-11 -- Completed 02-01 (Schema extension, core domain types, ingestion updates) +Plan: 2 of 3 in current phase +Status: Plan 02-02 Complete +Last activity: 2026-03-11 -- Completed 02-02 (ELK diagram rendering, SVG/JSON content negotiation, 15 tests) -Progress: [███-------] 33% +Progress: [██████----] 67% ## Performance Metrics @@ -54,6 +54,7 @@ Progress: [███-------] 33% | Phase 01 P02 | 7min | 2 tasks | 14 files | | Phase 01 P03 | 10min | 2 tasks | 12 files | | Phase 02 P01 | 13min | 2 tasks | 15 files | +| Phase 02 P02 | 14min | 2 tasks | 10 files | ## Accumulated Context @@ -78,6 +79,11 @@ Recent decisions affecting current work: - [Phase 02]: Exchange bodies/headers concatenated into single String columns for LIKE search - [Phase 02]: Headers serialized to JSON via Jackson ObjectMapper (static instance) - [Phase 02]: DiagramRenderer/DiagramLayout stubs created to resolve pre-existing compilation blocker +- [Phase 02]: ELK layered algorithm with top-to-bottom direction for route diagram layout +- [Phase 02]: JFreeSVG over Batik for lightweight server-side SVG generation +- [Phase 02]: Manual Accept header parsing -- JSON only when first preference, SVG as default +- [Phase 02]: xtext xbase lib required at runtime by ELK 0.11.0 LayeredMetaDataProvider +- [Phase 02]: Compound node children detected from RouteNode.getChildren() (matches agent graph model) ### Pending Todos @@ -92,6 +98,6 @@ None yet. ## Session Continuity -Last session: 2026-03-11T15:15:47Z -Stopped at: Completed 02-01-PLAN.md -Resume file: .planning/phases/02-transaction-search-diagrams/02-01-SUMMARY.md +Last session: 2026-03-11T15:17:22Z +Stopped at: Completed 02-02-PLAN.md +Resume file: .planning/phases/02-transaction-search-diagrams/02-02-SUMMARY.md diff --git a/.planning/phases/02-transaction-search-diagrams/02-02-SUMMARY.md b/.planning/phases/02-transaction-search-diagrams/02-02-SUMMARY.md new file mode 100644 index 00000000..901f65a5 --- /dev/null +++ b/.planning/phases/02-transaction-search-diagrams/02-02-SUMMARY.md @@ -0,0 +1,146 @@ +--- +phase: 02-transaction-search-diagrams +plan: 02 +subsystem: api +tags: [elk, jfreesvg, svg, diagram, layout, content-negotiation] + +requires: + - phase: 01-ingestion-pipeline + provides: DiagramRepository with findByContentHash for loading RouteGraph definitions +provides: + - DiagramRenderer interface in core module for SVG and JSON layout output + - ElkDiagramRenderer implementation using ELK layered algorithm and JFreeSVG + - DiagramRenderController with Accept header content negotiation + - Color-coded node rendering matching route-diagram-example.html style + - Compound node support for nested processors (CHOICE, SPLIT, TRY_CATCH) +affects: [02-03, ui-rendering, execution-overlay] + +tech-stack: + added: [org.eclipse.elk.core:0.11.0, org.eclipse.elk.alg.layered:0.11.0, org.jfree.svg:5.0.7, org.eclipse.xtext.xbase.lib:2.37.0] + patterns: [ELK graph construction, JFreeSVG rendering, manual Accept header content negotiation] + +key-files: + created: + - cameleer3-server-core/src/main/java/com/cameleer3/server/core/diagram/DiagramRenderer.java + - cameleer3-server-core/src/main/java/com/cameleer3/server/core/diagram/DiagramLayout.java + - cameleer3-server-core/src/main/java/com/cameleer3/server/core/diagram/PositionedNode.java + - cameleer3-server-core/src/main/java/com/cameleer3/server/core/diagram/PositionedEdge.java + - cameleer3-server-app/src/main/java/com/cameleer3/server/app/diagram/ElkDiagramRenderer.java + - cameleer3-server-app/src/main/java/com/cameleer3/server/app/controller/DiagramRenderController.java + - cameleer3-server-app/src/main/java/com/cameleer3/server/app/config/DiagramBeanConfig.java + - cameleer3-server-app/src/test/java/com/cameleer3/server/app/diagram/ElkDiagramRendererTest.java + - cameleer3-server-app/src/test/java/com/cameleer3/server/app/controller/DiagramRenderControllerIT.java + modified: + - cameleer3-server-app/pom.xml + +key-decisions: + - "Used ELK layered algorithm with top-to-bottom direction for route diagram layout" + - "JFreeSVG for server-side SVG generation (lightweight, no Batik dependency)" + - "Manual Accept header parsing for content negotiation -- JSON only when first preference, SVG as default" + - "Added xtext xbase lib runtime dependency required by ELK 0.11.0 LayeredMetaDataProvider" + - "Compound nodes detected via RouteNode.children rather than edge topology analysis" + +patterns-established: + - "DiagramRenderer interface in core, implementation in app -- swappable rendering backend" + - "Accept header content negotiation: check first media type preference, default to SVG" + - "NodeType color mapping via EnumSet groupings for efficient lookup" + +requirements-completed: [DIAG-03] + +duration: 14min +completed: 2026-03-11 +--- + +# Phase 2 Plan 2: Diagram Rendering Summary + +**ELK-based route diagram rendering with color-coded SVG output, JSON layout API, and compound node swimlanes via content-negotiated REST endpoint** + +## Performance + +- **Duration:** 14 min +- **Started:** 2026-03-11T15:03:12Z +- **Completed:** 2026-03-11T15:17:22Z +- **Tasks:** 2 +- **Files modified:** 10 + +## Accomplishments +- Route diagrams render as color-coded top-to-bottom SVG with ELK layered algorithm +- JSON layout API returns positioned nodes and edges for client-side rendering +- Compound nodes (CHOICE, SPLIT, TRY_CATCH) render in swimlane containers with children +- Content negotiation: Accept: application/json returns JSON, everything else defaults to SVG +- 11 unit tests and 4 integration tests verify layout, colors, content types, and 404 handling + +## Task Commits + +Each task was committed atomically: + +1. **Task 1: Add ELK/JFreeSVG dependencies and create core diagram rendering interfaces** - `6df7450` (feat) +2. **Task 2: Implement ElkDiagramRenderer, DiagramRenderController, and integration tests** - `c1bc32d` (feat, TDD) + +## Files Created/Modified +- `cameleer3-server-core/.../diagram/DiagramRenderer.java` - Renderer interface with renderSvg and layoutJson +- `cameleer3-server-core/.../diagram/DiagramLayout.java` - Layout record (width, height, nodes, edges) +- `cameleer3-server-core/.../diagram/PositionedNode.java` - Node record with position, dimensions, children +- `cameleer3-server-core/.../diagram/PositionedEdge.java` - Edge record with waypoints +- `cameleer3-server-app/.../diagram/ElkDiagramRenderer.java` - ELK + JFreeSVG implementation (~400 lines) +- `cameleer3-server-app/.../controller/DiagramRenderController.java` - GET /api/v1/diagrams/{hash}/render +- `cameleer3-server-app/.../config/DiagramBeanConfig.java` - Spring bean wiring for DiagramRenderer +- `cameleer3-server-app/pom.xml` - Added ELK, JFreeSVG, xtext dependencies +- `cameleer3-server-app/.../diagram/ElkDiagramRendererTest.java` - 11 unit tests +- `cameleer3-server-app/.../controller/DiagramRenderControllerIT.java` - 4 integration tests + +## Decisions Made +- Used ELK layered algorithm (org.eclipse.elk.alg.layered) -- well-maintained, supports compound nodes natively +- JFreeSVG over Batik -- lightweight, no transitive dependency bloat, sufficient for server-side SVG generation +- Manual Accept header parsing instead of Spring content negotiation -- simpler, avoids Spring's default JSON preference when Accept includes wildcards +- Added xtext xbase lib as runtime dependency -- ELK 0.11.0's LayeredMetaDataProvider references CollectionLiterals at class init time +- Compound node children detected from RouteNode.getChildren() rather than edge topology -- cleaner and matches the agent's graph model + +## Deviations from Plan + +### Auto-fixed Issues + +**1. [Rule 3 - Blocking] Added xtext xbase lib dependency for ELK compatibility** +- **Found during:** Task 2 (ElkDiagramRenderer implementation) +- **Issue:** ELK 0.11.0 LayeredMetaDataProvider references org.eclipse.xtext.xbase.lib.CollectionLiterals at class initialization, causing NoClassDefFoundError +- **Fix:** Added org.eclipse.xtext:org.eclipse.xtext.xbase.lib:2.37.0 dependency to app pom.xml +- **Files modified:** cameleer3-server-app/pom.xml +- **Verification:** All unit tests pass after adding dependency +- **Committed in:** c1bc32d (Task 2 commit) + +**2. [Rule 1 - Bug] Fixed content negotiation default format** +- **Found during:** Task 2 (integration test for default Accept header) +- **Issue:** TestRestTemplate sends Accept: text/plain, application/json, */* by default; simple contains("application/json") check returned JSON instead of SVG +- **Fix:** Changed to check only the first media type in Accept header -- JSON only when explicitly first preference +- **Files modified:** DiagramRenderController.java +- **Verification:** Integration test getWithNoAcceptHeader_defaultsToSvg passes +- **Committed in:** c1bc32d (Task 2 commit) + +**3. [Rule 1 - Bug] Adapted to actual NodeType enum naming (EIP_ prefix)** +- **Found during:** Task 2 (ElkDiagramRenderer implementation) +- **Issue:** Plan referenced CHOICE, SPLIT etc. but actual enum values are EIP_CHOICE, EIP_SPLIT etc. +- **Fix:** Used correct enum names from decompiled cameleer3-common jar in all color mapping sets +- **Files modified:** ElkDiagramRenderer.java +- **Verification:** Unit tests verify correct colors for endpoint and processor nodes +- **Committed in:** c1bc32d (Task 2 commit) + +--- + +**Total deviations:** 3 auto-fixed (2 bugs, 1 blocking dependency) +**Impact on plan:** All auto-fixes necessary for correctness. No scope creep. + +## Issues Encountered +- ELK 0.11.0 has an undeclared runtime dependency on xtext xbase lib -- resolved by adding explicit dependency +- RouteEdge.EdgeType uses FLOW/BRANCH/ERROR/CROSS_ROUTE (not NORMAL as plan implied) -- adapted tests accordingly + +## User Setup Required +None - no external service configuration required. + +## Next Phase Readiness +- Diagram rendering complete, ready for execution overlay in UI (v2) +- DiagramRenderer interface can be swapped for alternative implementations +- JSON layout format suitable for client-side interactive rendering + +--- +*Phase: 02-transaction-search-diagrams* +*Completed: 2026-03-11*