nifi-stateless/nifi-stateless-bundle/nifi-stateless-engine/src/main/java/org/apache/nifi/stateless/flow/StandardStatelessDataflowValidation.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.nifi.stateless.flow;

import org.apache.nifi.components.ValidationResult;
import org.apache.nifi.controller.ComponentNode;

import java.util.List;
import java.util.Map;

public class StandardStatelessDataflowValidation implements StatelessDataflowValidation {
    private final Map<ComponentNode, List<ValidationResult>> validationResults;

    public StandardStatelessDataflowValidation(final Map<ComponentNode, List<ValidationResult>> validationResults) {
        this.validationResults = validationResults;
    }

    @Override
    public boolean isValid() {
        return validationResults.isEmpty();
    }

    @Override
    public String toString() {
        final StringBuilder sb = new StringBuilder();
        sb.append("The following components are not valid:\n");

        for (final ComponentNode component : validationResults.keySet()) {
            sb.append(component.getComponentType()).append(" ").append(component.getName()).append(" (id=").append(component.getIdentifier()).append("):\n");

            final List<ValidationResult> results = validationResults.get(component);
            for (final ValidationResult result : results) {
                sb.append("\t").append(result.toString()).append("\n");
            }
        }

        return sb.toString();
    }
}