/*
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* Copyright 1999-2018 Alibaba Group Holding Ltd.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.alibaba.csp.sentinel.dashboard.controller.v2;
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import java.util.Date;
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import java.util.List;
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import com.alibaba.csp.sentinel.dashboard.auth.AuthAction;
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import com.alibaba.csp.sentinel.dashboard.auth.AuthService;
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import com.alibaba.csp.sentinel.dashboard.auth.AuthService.PrivilegeType;
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import com.alibaba.csp.sentinel.dashboard.controller.base.BaseRuleController;
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import com.alibaba.csp.sentinel.util.StringUtil;
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import com.alibaba.csp.sentinel.dashboard.datasource.entity.rule.FlowRuleEntity;
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import com.alibaba.csp.sentinel.dashboard.repository.rule.InMemoryRuleRepositoryAdapter;
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import com.alibaba.csp.sentinel.dashboard.rule.DynamicRuleProvider;
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import com.alibaba.csp.sentinel.dashboard.rule.DynamicRulePublisher;
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import com.alibaba.csp.sentinel.dashboard.domain.Result;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Qualifier;
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import org.springframework.util.ObjectUtils;
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import org.springframework.web.bind.annotation.DeleteMapping;
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import org.springframework.web.bind.annotation.GetMapping;
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import org.springframework.web.bind.annotation.PathVariable;
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import org.springframework.web.bind.annotation.PostMapping;
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import org.springframework.web.bind.annotation.PutMapping;
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import org.springframework.web.bind.annotation.RequestBody;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RequestParam;
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import org.springframework.web.bind.annotation.RestController;
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/**
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* 流控规则控制器
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*
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* @author zyf
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* @date 2022-04-13
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*/
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@RestController
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@RequestMapping(value = "/v2/flow")
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public class FlowControllerV2 extends BaseRuleController {
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private final Logger logger = LoggerFactory.getLogger(FlowControllerV2.class);
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@Autowired
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private InMemoryRuleRepositoryAdapter<FlowRuleEntity> repository;
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@Autowired
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@Qualifier("flowRuleNacosProvider")
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private DynamicRuleProvider<List<FlowRuleEntity>> ruleProvider;
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@Autowired
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@Qualifier("flowRuleNacosPublisher")
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private DynamicRulePublisher<List<FlowRuleEntity>> rulePublisher;
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@GetMapping("/rules")
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@AuthAction(PrivilegeType.READ_RULE)
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public Result<List<FlowRuleEntity>> apiQueryMachineRules(@RequestParam String app) {
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if (StringUtil.isEmpty(app)) {
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return Result.ofFail(-1, "app can't be null or empty");
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}
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try {
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List<FlowRuleEntity> rules = ruleProvider.getRules(app);
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if (rules != null && !rules.isEmpty()) {
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for (FlowRuleEntity entity : rules) {
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entity.setApp(app);
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if (entity.getClusterConfig() != null && entity.getClusterConfig().getFlowId() != null) {
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entity.setId(entity.getClusterConfig().getFlowId());
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}
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}
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}
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rules = repository.saveAll(rules);
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return Result.ofSuccess(rules);
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} catch (Throwable throwable) {
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logger.error("Error when querying flow rules", throwable);
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return Result.ofThrowable(-1, throwable);
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}
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}
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private <R> Result<R> checkEntityInternal(FlowRuleEntity entity) {
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if (entity == null) {
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return Result.ofFail(-1, "invalid body");
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}
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if (StringUtil.isBlank(entity.getApp())) {
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return Result.ofFail(-1, "app can't be null or empty");
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}
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if (StringUtil.isBlank(entity.getLimitApp())) {
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return Result.ofFail(-1, "limitApp can't be null or empty");
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}
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if (StringUtil.isBlank(entity.getResource())) {
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return Result.ofFail(-1, "resource can't be null or empty");
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}
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if (entity.getGrade() == null) {
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return Result.ofFail(-1, "grade can't be null");
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}
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if (entity.getGrade() != 0 && entity.getGrade() != 1) {
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return Result.ofFail(-1, "grade must be 0 or 1, but " + entity.getGrade() + " got");
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}
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if (entity.getCount() == null || entity.getCount() < 0) {
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return Result.ofFail(-1, "count should be at lease zero");
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}
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if (entity.getStrategy() == null) {
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return Result.ofFail(-1, "strategy can't be null");
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}
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if (entity.getStrategy() != 0 && StringUtil.isBlank(entity.getRefResource())) {
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return Result.ofFail(-1, "refResource can't be null or empty when strategy!=0");
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}
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if (entity.getControlBehavior() == null) {
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return Result.ofFail(-1, "controlBehavior can't be null");
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}
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int controlBehavior = entity.getControlBehavior();
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if (controlBehavior == 1 && entity.getWarmUpPeriodSec() == null) {
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return Result.ofFail(-1, "warmUpPeriodSec can't be null when controlBehavior==1");
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}
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if (controlBehavior == 2 && entity.getMaxQueueingTimeMs() == null) {
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return Result.ofFail(-1, "maxQueueingTimeMs can't be null when controlBehavior==2");
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}
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if (entity.isClusterMode() && entity.getClusterConfig() == null) {
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return Result.ofFail(-1, "cluster config should be valid");
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}
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return null;
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}
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@PostMapping("/rule")
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@AuthAction(value = AuthService.PrivilegeType.WRITE_RULE)
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public Result<FlowRuleEntity> apiAddFlowRule(@RequestBody FlowRuleEntity entity) {
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Result<FlowRuleEntity> checkResult = checkEntityInternal(entity);
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if (checkResult != null) {
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return checkResult;
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}
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entity.setId(null);
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Date date = new Date();
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entity.setGmtCreate(date);
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entity.setGmtModified(date);
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entity.setLimitApp(entity.getLimitApp().trim());
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entity.setResource(entity.getResource().trim());
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try {
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entity = repository.save(entity);
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publishRules(entity.getApp());
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} catch (Throwable throwable) {
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logger.error("Failed to add flow rule", throwable);
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return Result.ofThrowable(-1, throwable);
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}
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return Result.ofSuccess(entity);
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}
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@PutMapping("/rule/{id}")
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@AuthAction(AuthService.PrivilegeType.WRITE_RULE)
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public Result<FlowRuleEntity> apiUpdateFlowRule(@PathVariable("id") Long id,
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@RequestBody FlowRuleEntity entity) {
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if (id == null || id <= 0) {
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return Result.ofFail(-1, "Invalid id");
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}
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FlowRuleEntity oldEntity = repository.findById(id);
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if (oldEntity == null) {
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return Result.ofFail(-1, "id " + id + " does not exist");
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}
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if (entity == null) {
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return Result.ofFail(-1, "invalid body");
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}
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entity.setApp(oldEntity.getApp());
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entity.setIp(oldEntity.getIp());
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entity.setPort(oldEntity.getPort());
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Result<FlowRuleEntity> checkResult = checkEntityInternal(entity);
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if (checkResult != null) {
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return checkResult;
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}
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entity.setId(id);
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Date date = new Date();
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entity.setGmtCreate(oldEntity.getGmtCreate());
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entity.setGmtModified(date);
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try {
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entity = repository.save(entity);
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if (entity == null) {
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return Result.ofFail(-1, "save entity fail");
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}
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publishRules(oldEntity.getApp());
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} catch (Throwable throwable) {
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logger.error("Failed to update flow rule", throwable);
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return Result.ofThrowable(-1, throwable);
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}
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return Result.ofSuccess(entity);
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}
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@DeleteMapping("/rule/{id}")
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@AuthAction(PrivilegeType.DELETE_RULE)
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public Result<Long> apiDeleteRule(@PathVariable("id") Long id) {
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if (id == null || id <= 0) {
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return Result.ofFail(-1, "Invalid id");
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}
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FlowRuleEntity oldEntity = repository.findById(id);
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if (ObjectUtils.isEmpty(oldEntity)) {
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return Result.ofSuccess(null);
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}
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try {
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repository.delete(id);
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publishRules(oldEntity.getApp());
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} catch (Exception e) {
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return Result.ofFail(-1, e.getMessage());
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}
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return Result.ofSuccess(id);
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}
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private void publishRules(/*@NonNull*/ String app) throws Exception {
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List<FlowRuleEntity> rules = repository.findAllByApp(app);
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rulePublisher.publish(app, rules);
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//延迟加载
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delayTime();
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}
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}
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