MockValidationContext.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.util;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.apache.nifi.attribute.expression.language.Query;
import org.apache.nifi.attribute.expression.language.Query.Range;
import org.apache.nifi.attribute.expression.language.StandardExpressionLanguageCompiler;
import org.apache.nifi.components.PropertyDescriptor;
import org.apache.nifi.components.PropertyValue;
import org.apache.nifi.components.ValidationContext;
import org.apache.nifi.components.state.StateManager;
import org.apache.nifi.controller.ControllerService;
import org.apache.nifi.controller.ControllerServiceLookup;
import org.apache.nifi.expression.ExpressionLanguageCompiler;
import org.apache.nifi.registry.VariableRegistry;


public class MockValidationContext implements ValidationContext, ControllerServiceLookup {

    private final MockProcessContext context;
    private final Map<String, Boolean> expressionLanguageSupported;
    private final StateManager stateManager;
    private final VariableRegistry variableRegistry;

    public MockValidationContext(final MockProcessContext processContext) {
        this(processContext, null, VariableRegistry.EMPTY_REGISTRY);
    }

    public MockValidationContext(final MockProcessContext processContext, final StateManager stateManager, final VariableRegistry variableRegistry) {
        this.context = processContext;
        this.stateManager = stateManager;
        this.variableRegistry = variableRegistry;

        final Map<PropertyDescriptor, String> properties = processContext.getProperties();
        expressionLanguageSupported = new HashMap<>(properties.size());
        for (final PropertyDescriptor descriptor : properties.keySet()) {
            expressionLanguageSupported.put(descriptor.getName(), descriptor.isExpressionLanguageSupported());
        }
    }

    @Override
    public ControllerService getControllerService(final String identifier) {
        return context.getControllerService(identifier);
    }

    @Override
    public PropertyValue newPropertyValue(final String rawValue) {
        return new MockPropertyValue(rawValue, this, variableRegistry);
    }

    @Override
    public ExpressionLanguageCompiler newExpressionLanguageCompiler() {
        return new StandardExpressionLanguageCompiler(variableRegistry);
    }

    @Override
    public ValidationContext getControllerServiceValidationContext(final ControllerService controllerService) {
        final MockProcessContext serviceProcessContext = new MockProcessContext(controllerService, context, stateManager, variableRegistry);
        return new MockValidationContext(serviceProcessContext, stateManager, variableRegistry);
    }

    @Override
    public PropertyValue getProperty(final PropertyDescriptor property) {
        return context.getProperty(property);
    }

    @Override
    public Map<PropertyDescriptor, String> getProperties() {
        return context.getProperties();
    }

    @Override
    public String getAnnotationData() {
        return context.getAnnotationData();
    }

    @Override
    public Set<String> getControllerServiceIdentifiers(final Class<? extends ControllerService> serviceType) {
        return context.getControllerServiceIdentifiers(serviceType);
    }

    @Override
    public ControllerServiceLookup getControllerServiceLookup() {
        return this;
    }

    @Override
    public boolean isControllerServiceEnabled(final String serviceIdentifier) {
        return context.isControllerServiceEnabled(serviceIdentifier);
    }

    @Override
    public boolean isControllerServiceEnabled(final ControllerService service) {
        return context.isControllerServiceEnabled(service);
    }

    @Override
    public String getControllerServiceName(final String serviceIdentifier) {
        final ControllerServiceConfiguration configuration = context.getConfiguration(serviceIdentifier);
        return configuration == null ? null : serviceIdentifier;
    }

    @Override
    public boolean isValidationRequired(final ControllerService service) {
        return true;
    }

    @Override
    public boolean isControllerServiceEnabling(final String serviceIdentifier) {
        return context.isControllerServiceEnabling(serviceIdentifier);
    }

    @Override
    public boolean isExpressionLanguagePresent(final String value) {
        if (value == null) {
            return false;
        }

        final List<Range> elRanges = Query.extractExpressionRanges(value);
        return (elRanges != null && !elRanges.isEmpty());
    }

    @Override
    public boolean isExpressionLanguageSupported(final String propertyName) {
        final Boolean supported = expressionLanguageSupported.get(propertyName);
        return Boolean.TRUE.equals(supported);
    }

    @Override
    public String getProcessGroupIdentifier() {
        return "unit test";
    }

}