[pkg/ottl] Add schema_url field to contexts

[kernelpanic77]

This PR attempts to make schemaURL for TransformContexts.

Description:
Added a breaking change to creation of TransformContext function for logs. Also made changes to all references of the function.

Link to tracking Issue:
#30229

[evan-bradley]

Thanks for your patience. We're headed in the right direction, I left a few comments to help illustrate how I think this should work.

[kernelpanic77]

@evan-bradley I think this implementation should now work for ottllog. I have addressed your comments in the latest commits. Requesting your review on this.

However, I still have one question.

how would we change the NewTransformContext function for ottlscope, ottlresource and ottldatapoint, since all these modules use either internal.ResourceContext or internal.InstrumentationScopeContext interface ?
(We cannot use scope/resourceLogs, scope/resourceMetrics, scope/resourceSpans here)

[kernelpanic77]

@evan-bradley Lets get this PR merged this week. I think we are very close to what we need. Please give your review for the latest commit. Thanks

[kernelpanic77]

@evan-bradley @TylerHelmuth can we merge this PR now ?
let me know if any other changes are needed.

[evan-bradley]

@kernelpanic77 Could you fix the lint issues?

[TylerHelmuth]

running make fmt in the transformprocessor dir should fix the issue.

[kernelpanic77]

Ready to merge 👍

[TylerHelmuth]

@kernelpanic77 looks like the linter is still failing. You can run make lint within the pkg/ottl dir to test if lint is passing.

[kernelpanic77]

@kernelpanic77 looks like the linter is still failing. You can run make lint within the pkg/ottl dir to test if lint is passing.

@TylerHelmuth the linter is expected to fail here, since the SchemaURLItem interface uses the same signature to get and set a schema_url string.

Error: ottl/contexts/internal/scope_test.go:414:29: var-naming: method SchemaUrl should be SchemaURL (revive) func (t *TestSchemaURLItem) SchemaUrl() string { ^ Error: ottl/contexts/internal/resource.go:95:16: unused-parameter: parameter 'ctx' seems to be unused, consider removing or renaming it as _ (revive) Getter: func(ctx context.Context, tCtx K) (any, error) { ^ Error: ottl/contexts/internal/scope_test.go:418:29: var-naming: method SetSchemaUrl should be SetSchemaURL (revive) func (t *TestSchemaURLItem) SetSchemaUrl(v string) { ^ Error: ottl/contexts/internal/resource_test.go:48:19: unused-parameter: parameter 'resource' seems to be unused, consider removing or renaming it as _ (revive) modified: func(resource pcommon.Resource) { ^ Error: ottl/contexts/internal/resource_test.go:387:2: var-naming: don't use underscores in Go names; struct field schema_url should be schemaURL (revive) schema_url string ^ Error: ottl/contexts/internal/resource_test.go:390:37: var-naming: method SchemaUrl should be SchemaURL (revive) func (t *TestResourceSchemaURLItem) SchemaUrl() string { ^ Error: ottl/contexts/internal/resource_test.go:394:37: var-naming: method SetSchemaUrl should be SetSchemaURL (revive) func (t *TestResourceSchemaURLItem) SetSchemaUrl(v string) {

For instance plog.Resourcelogs also has the same signature as SchemaURLItem interface, to fetch schema_url SchemaUrl()