OperationIdsInOpenAPI.java

///usr/bin/env jbang "$0" "$@" ; exit $?

// Script to search all the operationId of a given OpenAPI spec.
// Usage: jbang run OperationIdsInOpenAPI.java <path to the OpenAPI spec>
// Example taken from https://openapitools.github.io/empoa/

//DEPS org.openapitools.empoa:empoa-util:2.1.0
//DEPS org.openapitools.empoa:empoa-swagger-core:2.1.0
//DEPS io.swagger.parser.v3:swagger-parser:2.0.20
//DEPS org.slf4j:slf4j-simple:1.7.36

import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import org.eclipse.microprofile.openapi.models.Components;
import org.eclipse.microprofile.openapi.models.Operation;
import org.eclipse.microprofile.openapi.models.OpenAPI;

import org.openapitools.empoa.util.visitor.OASVisitorAdapter;
import org.openapitools.empoa.util.visitor.OASVisitResult;
import org.openapitools.empoa.util.visitor.OASAccept;
import org.openapitools.empoa.swagger.core.internal.SwAdapter;

import io.swagger.parser.OpenAPIParser;
import io.swagger.v3.parser.core.models.ParseOptions;
import io.swagger.v3.parser.core.models.SwaggerParseResult;
import static java.lang.System.*;

public class OperationIdsInOpenAPI {

    public static void main(String... args) {
        if(args.length == 0) {
            System.out.println("jbang " + OperationIdsInOpenAPI.class.getSimpleName() + ".java <path of the OpenAPI file>");
            System.exit(1);
        }
        OpenAPIParser openApiParser = new OpenAPIParser();
        ParseOptions options = new ParseOptions();

        SwaggerParseResult parserResult = openApiParser.readLocation(args[0], null, options);

        io.swagger.v3.oas.models.OpenAPI swaggerOpenAPI = parserResult.getOpenAPI();
        OpenAPI openAPI = SwAdapter.toOpenAPI(swaggerOpenAPI);

        OperationIdVisitor visitor = new OperationIdVisitor();
        OASAccept.accept(visitor, openAPI);
        Map<String, String> operationIds = visitor.getOperationIds();

        operationIds.forEach((k, v) -> {
            out.println(k + ": " + v);
        });
    }

    public static class OperationIdVisitor extends OASVisitorAdapter {

        private Map<String, String> operationIds = new HashMap<>();

        public Map<String, String> getOperationIds() {
            return Collections.unmodifiableMap(operationIds);
        }

        @Override
        public OASVisitResult visit(Operation operation, String jsonPath) {
            operationIds.put(jsonPath + ".operationId", operation.getOperationId()); 
            return OASVisitResult.CONTINUE; 
        }

        @Override
        public OASVisitResult visit(Components components, String jsonPath) {
            return OASVisitResult.TERMINATE; 
        }
    }
}

Usage example:

jbang run OperationIdsInOpenAPI.java https://raw.githubusercontent.com/OpenAPITools/empoa/334fb4d21/empoa-jackson-serializer/src/test/resources/jackson-serializer/yaml/todoapp.yaml

For this OpenAPI spec: todoapp.yaml

Output:

$.paths.['/task/{taskId}'].put.operationId: tasksUpdate
$.paths.['/task/{taskId}'].delete.operationId: tasksDelete
$.paths.['/task'].get.operationId: tasksGetAll
$.paths.['/task'].post.operationId: tasksCreate
$.paths.['/task/{taskId}'].get.operationId: tasksRead