Kamil Patryk Kozakowski
b158179559
Resolve property placeholders before call-chain linking, skip phantom routing states and lifecycle triggers from transition matching, dedupe exported states, and add golden JSON audit regression plus HTML lifecycle endpoint display. Co-authored-by: Cursor <cursoragent@cursor.com>
82 lines
3.7 KiB
Markdown
82 lines
3.7 KiB
Markdown
# Spring State Machine Explorer
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Static analysis tool to extract and visualize Spring State Machines with deep code traceability.
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## Core Modules
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- **`state_machine_exporter`**: Java AST analyzer. Scans source code, resolves local Maven/Gradle dependencies, and extracts logic (Lambdas, Actions, Guards) into JSON/PUML.
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- **`state_machine_exporter_html`**: Generates an interactive HTML portal with SVG diagrams and rich tooltips.
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## Usage
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Analysis is **source-first**: the exporter reads project source and build metadata (`pom.xml`, `settings.gradle`) statically. It does **not** run Maven or Gradle against the project being analyzed.
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### 1. Extract Metadata (JSON)
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```bash
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./gradlew :state_machine_exporter:run --args="-i ./my-project -o ./out -f json"
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```
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Common options:
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| Flag | Description |
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|------|-------------|
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| `-i, --input` | Project directory to scan (defaults to `.`) |
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| `-j, --json` | Re-render from an existing JSON export instead of scanning source |
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| `-o, --output` | Output directory (default `./out`) |
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| `-f, --format` | Comma-separated formats: `json`, `dot`, `puml`, `scxml` |
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| `-p, --profiles` | Spring profiles for property placeholder resolution |
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| `--event`, `--state` | Enum formatting: `fn` (default), `fqn`, `sn` |
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| `--debug` | Verbose analysis logging and unresolved chain diagnostics |
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| `--no-diamonds` | Render choice/junction states as regular nodes (default: diamonds) |
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| `--include-generated-sources` | Also scan `target/` / `build/` generated `.java` trees (default: on) |
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| `--no-inline-accessors` | Disable accessor indexing/inlining (enabled by default) |
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### 2. Generate Interactive Portal (HTML)
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```bash
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./gradlew :state_machine_exporter_html:run --args="-i ./my-project -o ./out_html"
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```
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HTML-specific options:
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| Flag | Description |
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|------|-------------|
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| `-f, --flows` | Custom `flows.json` path |
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| `-m, --machine` | Export only machines whose name contains this filter |
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| `--open` | Open the generated portal in the default browser |
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| `--no-metadata-pane` | Hide the left metadata pane (entry points, flows) |
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| `--no-diamonds` | Render choice pseudostates as normal nodes |
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| `--debug` | Same diagnostic mode as the core exporter |
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| `--include-generated-sources` | Same generated-source scanning as the core exporter |
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| `--no-inline-accessors` | Disable accessor indexing/inlining (enabled by default) |
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| `-p, --profiles` | Spring profiles for property resolution |
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## Business Flows
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Define sequence of events in `src/main/resources/flows.json`:
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```json
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[
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{
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"name": "Order Success",
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"description": "Happy path for order placement",
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"steps": ["PAY", "CHECK_AVAILABILITY->PENDING", "SHIP"]
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}
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]
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```
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## JSON Structure
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- `metadata.entryPoints`: REST, WebFlux, and JMS entry points.
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- `metadata.callChains`: Trace from API call to machine trigger (`sendEvent`).
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- `transitions.actions[].internalLogic`: Extracted source code/lambdas.
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- `metadata.properties`: Dictionary of all detected Spring profiles.
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## Static analysis: accessor inlining
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During scan, the exporter builds an **accessor index** of trivial getters, setters, record components, and constant-returning methods. At analysis time, `AccessorResolver` uses this index first (O(1) lookup), then falls back to constructor/field tracing and method-body evaluation.
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This improves resolution of DTO/event chains such as `request.getPayload().getType()` without running Maven or Gradle on the target project.
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```bash
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# Enabled by default; disable for debugging or A/B comparison
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./gradlew :state_machine_exporter:run --args="-i ./my-project -o ./out --no-inline-accessors"
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```
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Pipeline components live under `analysis/pipeline/` (`AccessorResolver`, `ResolutionBudget`, `MethodInvocationUnwrapper`, `FieldInitializerFinder`, `LibraryUnwrapRegistry`).
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