dubbo EnvironmentAdapter 源码

dubbo EnvironmentAdapter 代码

文件路径：/dubbo-common/src/main/java/org/apache/dubbo/common/infra/support/EnvironmentAdapter.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.dubbo.common.infra.support;

import org.apache.dubbo.common.config.ConfigurationUtils;
import org.apache.dubbo.common.extension.Activate;
import org.apache.dubbo.common.infra.InfraAdapter;
import org.apache.dubbo.common.utils.StringUtils;
import org.apache.dubbo.rpc.model.ApplicationModel;
import org.apache.dubbo.rpc.model.ScopeModelAware;

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

import static org.apache.dubbo.common.constants.CommonConstants.COMMA_SPLIT_PATTERN;
import static org.apache.dubbo.common.constants.CommonConstants.DUBBO_ENV_KEYS;
import static org.apache.dubbo.common.constants.CommonConstants.DUBBO_LABELS;
import static org.apache.dubbo.common.constants.CommonConstants.EQUAL_SPLIT_PATTERN;
import static org.apache.dubbo.common.constants.CommonConstants.SEMICOLON_SPLIT_PATTERN;

@Activate
public class EnvironmentAdapter implements InfraAdapter, ScopeModelAware {

    private ApplicationModel applicationModel;

    @Override
    public void setApplicationModel(ApplicationModel applicationModel) {
        this.applicationModel = applicationModel;
    }

    /**
     * 1. OS Environment: DUBBO_LABELS=tag=pre;key=value
     * 2. JVM Options: -Denv_keys = DUBBO_KEY1, DUBBO_KEY2
     */
    @Override
    public Map<String, String> getExtraAttributes(Map<String, String> params) {
        Map<String, String> parameters = new HashMap<>();

        String rawLabels = ConfigurationUtils.getProperty(applicationModel, DUBBO_LABELS);
        if (StringUtils.isNotEmpty(rawLabels)) {
            String[] labelPairs = SEMICOLON_SPLIT_PATTERN.split(rawLabels);
            for (String pair : labelPairs) {
                String[] label = EQUAL_SPLIT_PATTERN.split(pair);
                if (label.length == 2) {
                    parameters.put(label[0], label[1]);
                }
            }
        }

        String rawKeys = ConfigurationUtils.getProperty(applicationModel, DUBBO_ENV_KEYS);
        if (StringUtils.isNotEmpty(rawKeys)) {
            String[] keys = COMMA_SPLIT_PATTERN.split(rawKeys);
            for (String key : keys) {
                String value = ConfigurationUtils.getProperty(applicationModel, key);
                if (value != null) {
                    parameters.put(key, value);
                }
            }
        }
        return parameters;
    }

    @Override
    public String getAttribute(String key) {
        return ConfigurationUtils.getProperty(applicationModel, key);
    }
}

相关信息

dubbo 源码目录

相关文章

dubbo AddressListener 源码

dubbo CacheableRouterFactory 源码

dubbo Cluster 源码

dubbo ClusterInvoker 源码

dubbo ClusterScopeModelInitializer 源码

dubbo Configurator 源码

dubbo ConfiguratorFactory 源码

dubbo Constants 源码

dubbo Directory 源码

dubbo LoadBalance 源码