com.huawei.streaming.cql.semanticanalyzer.CreateDatasourceAnalyzer.java Source code

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Here is the source code for com.huawei.streaming.cql.semanticanalyzer.CreateDatasourceAnalyzer.java

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/**
 * 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 com.huawei.streaming.cql.semanticanalyzer;

import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.TreeMap;

import com.google.common.collect.Maps;
import com.huawei.streaming.api.AnnotationUtils;
import com.huawei.streaming.cql.exception.SemanticAnalyzerException;
import com.huawei.streaming.cql.mapping.InputOutputOperatorMapping;
import com.huawei.streaming.cql.semanticanalyzer.analyzecontext.AnalyzeContext;
import com.huawei.streaming.cql.semanticanalyzer.analyzecontext.CreateDataSourceAnalyzeContext;
import com.huawei.streaming.cql.semanticanalyzer.parser.context.CreateDataSourceContext;
import com.huawei.streaming.cql.semanticanalyzer.parser.context.KeyValuePropertyContext;
import com.huawei.streaming.cql.semanticanalyzer.parser.context.ParseContext;
import com.huawei.streaming.cql.semanticanalyzer.parser.context.StreamPropertiesContext;

/**
 * create datasource ?
 *
 */
public class CreateDatasourceAnalyzer extends BaseAnalyzer {
    private CreateDataSourceAnalyzeContext analyzeContext = null;

    private CreateDataSourceContext context;

    /**
     * <>
     *
     * @param parseContext ?
     * @throws SemanticAnalyzerException ?
     */
    public CreateDatasourceAnalyzer(ParseContext parseContext) throws SemanticAnalyzerException {
        super(parseContext);
        context = (CreateDataSourceContext) parseContext;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public AnalyzeContext analyze() throws SemanticAnalyzerException {
        parseStreamProperties();
        TreeMap<String, String> conf = convertSourceSimpleConf(analyzeContext.getDataSourceConfig());
        analyzeContext.setDatasourceConfigs(conf);
        return analyzeContext;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected void createAnalyzeContext() {
        analyzeContext = new CreateDataSourceAnalyzeContext();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected AnalyzeContext getAnalyzeContext() {
        return analyzeContext;
    }

    private TreeMap<String, String> convertSourceSimpleConf(final TreeMap<String, String> sourceConf)
            throws SemanticAnalyzerException {
        String sourceClassName = analyzeContext.getDataSourceClass();
        return convertSimpleConf(sourceConf, sourceClassName);
    }

    private TreeMap<String, String> convertSimpleConf(TreeMap<String, String> serdeProperties,
            String deserClassName) throws SemanticAnalyzerException {
        String apiOperator = InputOutputOperatorMapping.getAPIOperatorByPlatform(deserClassName);
        if (apiOperator == null) {
            return serdeProperties;
        }

        Map<String, String> configMapping = AnnotationUtils.getConfigMapping(apiOperator);
        TreeMap<String, String> confs = Maps.newTreeMap();

        for (Map.Entry<String, String> et : serdeProperties.entrySet()) {
            String fullName = et.getKey().toLowerCase(Locale.US);
            String value = et.getValue();
            if (configMapping.containsKey(fullName)) {
                fullName = configMapping.get(fullName);
            }
            confs.put(fullName, value);
        }

        return confs;
    }

    private void parseStreamProperties() {
        TreeMap<String, String> properties = Maps.newTreeMap();

        StreamPropertiesContext propertiesContext = context.getDataSourceProperties();
        if (propertiesContext == null) {
            analyzeContext.setDatasourceConfigs(properties);
            return;
        }

        List<KeyValuePropertyContext> propertyList = propertiesContext.getProperties();

        for (KeyValuePropertyContext ctx : propertyList) {
            String key = ctx.getKey();
            String value = ctx.getValue();
            properties.put(key, value);
        }

        analyzeContext.setDatasourceConfigs(properties);
    }
}