dubbo-admin-backend/src/main/java/org/apache/dubbo/admin/controller/OverridesController.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.admin.controller;

import org.apache.commons.lang3.StringUtils;
import org.apache.dubbo.admin.common.exception.ParamValidationException;
import org.apache.dubbo.admin.common.exception.ResourceNotFoundException;
import org.apache.dubbo.admin.model.dto.OverrideDTO;
import org.apache.dubbo.admin.service.OverrideService;
import org.apache.dubbo.admin.model.domain.Override;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.*;

import java.util.*;

@RestController
@RequestMapping("/api/{env}/rules/override")
public class OverridesController {

    private final OverrideService overrideService;

    @Autowired
    public OverridesController(OverrideService overrideService) {
        this.overrideService = overrideService;
    }

    @RequestMapping(method = RequestMethod.POST)
    @ResponseStatus(HttpStatus.CREATED)
    public boolean createOverride(@RequestBody OverrideDTO overrideDTO, @PathVariable String env) {
        String serviceName = overrideDTO.getService();
        String application = overrideDTO.getApplication();
        if (StringUtils.isEmpty(serviceName) && StringUtils.isEmpty(application)) {
            throw new ParamValidationException("serviceName and application are Empty!");
        }
        Override override = convertOverrideDTOtoOverride(overrideDTO);
        overrideService.saveOverride(override);
        return true;
    }

    @RequestMapping(value = "/{id}", method = RequestMethod.PUT)
    public boolean updateOverride(@PathVariable String id, @RequestBody OverrideDTO overrideDTO, @PathVariable String env) {
        Override old = overrideService.findOverride(id);
        if (old == null) {
            throw new ResourceNotFoundException("Unknown ID!");
        }
        Override override = convertOverrideDTOtoOverride(overrideDTO);
        overrideService.updateOverride(override);
        return true;
    }

    @RequestMapping(method = RequestMethod.GET)
    public List<OverrideDTO> searchOverride(@RequestParam(required = false) String service,
                                            @RequestParam(required = false) String application,
                                            @PathVariable String env) {
        Override override = null;
        List<OverrideDTO> result = new ArrayList<>();
        if (StringUtils.isNotEmpty(service)) {
            override = overrideService.findOverride(service);
        } else if(StringUtils.isNotEmpty(application)){
            override = overrideService.findOverride(application);
        }
        OverrideDTO overrideDTO = convertOverrideToOverrideDTO(override);
        if (overrideDTO != null) {
            result.add(overrideDTO);
        }
        return result;
    }

    @RequestMapping(value = "/{id}", method = RequestMethod.GET)
    public OverrideDTO detailOverride(@PathVariable String id, @PathVariable String env) {
        Override override = overrideService.findOverride(id);
        if (override == null) {
            throw new ResourceNotFoundException("Unknown ID!");
        }

        OverrideDTO overrideDTO = convertOverrideToOverrideDTO(override);
        return overrideDTO;
    }

    @RequestMapping(value = "/{id}", method = RequestMethod.DELETE)
    public boolean deleteOverride(@PathVariable String id, @PathVariable String env) {
        overrideService.deleteOverride(id);
        return true;
    }

    @RequestMapping(value = "/enable/{id}", method = RequestMethod.PUT)
    public boolean enableRoute(@PathVariable String id, @PathVariable String env) {

        overrideService.enableOverride(id);
        return true;
    }

    @RequestMapping(value = "/disable/{id}", method = RequestMethod.PUT)
    public boolean disableRoute(@PathVariable String id, @PathVariable String env) {

        overrideService.disableOverride(id);
        return true;
    }

    private Override convertOverrideDTOtoOverride(OverrideDTO overrideDTO) {
        if (overrideDTO == null) {
            return null;
        }
        Override override = new Override();
        if (overrideDTO.getApplication() != null) {
            override.setScope("application");
            override.setKey(overrideDTO.getApplication());
        } else {
            override.setScope("service");
            override.setKey(overrideDTO.getService());
        }
        override.setEnabled(overrideDTO.isEnabled());
        override.setApiVersion("v2.7");
        override.setConfigs(overrideDTO.getConfigs());
        return override;
    }

    private OverrideDTO convertOverrideToOverrideDTO(Override override) {
        if (override == null) {
            return null;
        }
        OverrideDTO overrideDTO = new OverrideDTO();
        overrideDTO.setApiVersion(override.getApiVersion());
        if (override.getScope().equals("application")) {
            overrideDTO.setApplication(override.getKey());
        } else {
            overrideDTO.setService(override.getKey());
        }
        overrideDTO.setEnabled(override.isEnabled());
        overrideDTO.setConfigs(override.getConfigs());
        return overrideDTO;
    }

//    private void overrideDTOToParams(Override override, OverrideDTO overrideDTO) {
//        Map<Object, String>[] mocks = overrideDTO.getMock();
//        Map<String, Object>[] parameters = overrideDTO.getParameters();
//        StringBuilder params = new StringBuilder();
//        if (mocks != null) {
//            for (Map<Object, String> mock : mocks) {
//                for (Map.Entry<Object, String> entry : mock.entrySet()) {
//                    String key;
//                    if (entry.getKey().equals("0")) {
//                        key = "mock";
//                    } else {
//                        key = entry.getKey() + ".mock";
//                    }
//                    String value = key + "=" + URL.encode(entry.getValue());
//                    params.append(value).append("&");
//                }
//            }
//        }
//
//        if (parameters != null) {
//            for (Map<String, Object> param : parameters) {
//                for (Map.Entry<String, Object> entry : param.entrySet()) {
//                    String value = entry.getKey() + "=" + entry.getValue();
//                    params.append(value).append("&");
//                }
//            }
//        }
//        if (StringUtils.isNotEmpty(params)) {
//            int length = params.length();
//            if (params.charAt(length - 1) == '&') {
//                params.deleteCharAt(length - 1);
//            }
//        }
//        override.setParams(params.toString());
//    }
//
//    private void paramsToOverrideDTO(Override override, OverrideDTO overrideDTO) {
//        String params = override.getParams();
//        if (StringUtils.isNotEmpty(params)) {
//            List<Map<Object, String>> mock = new ArrayList<>();
//            List<Map<String, Object>> parameters = new ArrayList<>();
//            String[] pair = params.split("&");
//            for (String p : pair) {
//                String key = p.split("=")[0];
//                if (key.contains("mock")) {
//                    //mock
//                    String value = URL.decode(p.split("=")[1]);
//                    Map<Object, String> item = new HashMap<>();
//                    if (key.contains(".")) {
//                        //single method mock
//                        key = key.split("\\.")[0];
//                        item.put(key, value);
//                    } else {
//                        item.put(0, value);
//                    }
//                    mock.add(item);
//                } else {
//                    //parameter
//                    String value = p.split("=")[1];
//                    Map<String, Object> item = new HashMap<>();
//                    item.put(key, value);
//                    parameters.add(item);
//                }
//            }
//            Map<Object, String>[] mockArray = new Map[mock.size()];
//            overrideDTO.setMock(mock.toArray(mockArray));
//            Map<String, Object>[] paramArray = new Map[parameters.size()];
//            overrideDTO.setParameters(parameters.toArray(paramArray));
//        }
//    }

}