package com.alibaba.csp.sentinel.dashboard.controller.gateway;
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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.controller.base.BaseRuleController;
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import com.alibaba.csp.sentinel.dashboard.datasource.entity.gateway.ApiDefinitionEntity;
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import com.alibaba.csp.sentinel.dashboard.datasource.entity.gateway.ApiPredicateItemEntity;
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import com.alibaba.csp.sentinel.dashboard.discovery.MachineInfo;
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import com.alibaba.csp.sentinel.dashboard.domain.Result;
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import com.alibaba.csp.sentinel.dashboard.domain.vo.gateway.api.AddApiReqVo;
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import com.alibaba.csp.sentinel.dashboard.domain.vo.gateway.api.ApiPredicateItemVo;
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import com.alibaba.csp.sentinel.dashboard.domain.vo.gateway.api.UpdateApiReqVo;
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import com.alibaba.csp.sentinel.dashboard.repository.gateway.InMemApiDefinitionStore;
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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.util.StringUtil;
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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.CollectionUtils;
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import org.springframework.web.bind.annotation.*;
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import javax.servlet.http.HttpServletRequest;
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import java.util.*;
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import static com.alibaba.csp.sentinel.adapter.gateway.common.SentinelGatewayConstants.*;
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/**
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* 网关API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 = "/gateway/api")
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public class GatewayApiController extends BaseRuleController {
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private final Logger logger = LoggerFactory.getLogger(GatewayApiController.class);
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@Autowired
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private InMemApiDefinitionStore repository;
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@Autowired
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@Qualifier("gateWayApiNacosProvider")
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private DynamicRuleProvider<List<ApiDefinitionEntity>> apiProvider;
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@Autowired
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@Qualifier("gateWayApiNacosPublisher")
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private DynamicRulePublisher<List<ApiDefinitionEntity>> apiPublisher;
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@GetMapping("/list.json")
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@AuthAction(AuthService.PrivilegeType.READ_RULE)
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public Result<List<ApiDefinitionEntity>> queryApis(String app, String ip, Integer port) {
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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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if (StringUtil.isEmpty(ip)) {
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return Result.ofFail(-1, "ip can't be null or empty");
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}
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if (port == null) {
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return Result.ofFail(-1, "port can't be null");
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}
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try {
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List<ApiDefinitionEntity> apis = apiProvider.getRules(app);
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repository.saveAll(apis);
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return Result.ofSuccess(apis);
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} catch (Throwable throwable) {
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logger.error("queryApis error:", throwable);
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return Result.ofThrowable(-1, throwable);
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}
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}
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@PostMapping("/new.json")
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@AuthAction(AuthService.PrivilegeType.WRITE_RULE)
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public Result<ApiDefinitionEntity> addApi(HttpServletRequest request, @RequestBody AddApiReqVo reqVo) {
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String app = reqVo.getApp();
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if (StringUtil.isBlank(app)) {
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return Result.ofFail(-1, "app can't be null or empty");
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}
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ApiDefinitionEntity entity = new ApiDefinitionEntity();
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entity.setApp(app.trim());
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String ip = reqVo.getIp();
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if (StringUtil.isBlank(ip)) {
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return Result.ofFail(-1, "ip can't be null or empty");
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}
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entity.setIp(ip.trim());
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Integer port = reqVo.getPort();
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if (port == null) {
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return Result.ofFail(-1, "port can't be null");
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}
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entity.setPort(port);
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// API名称
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String apiName = reqVo.getApiName();
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if (StringUtil.isBlank(apiName)) {
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return Result.ofFail(-1, "apiName can't be null or empty");
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}
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entity.setApiName(apiName.trim());
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// 匹配规则列表
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List<ApiPredicateItemVo> predicateItems = reqVo.getPredicateItems();
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if (CollectionUtils.isEmpty(predicateItems)) {
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return Result.ofFail(-1, "predicateItems can't empty");
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}
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List<ApiPredicateItemEntity> predicateItemEntities = new ArrayList<>();
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for (ApiPredicateItemVo predicateItem : predicateItems) {
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ApiPredicateItemEntity predicateItemEntity = new ApiPredicateItemEntity();
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// 匹配模式
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Integer matchStrategy = predicateItem.getMatchStrategy();
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if (!Arrays.asList(URL_MATCH_STRATEGY_EXACT, URL_MATCH_STRATEGY_PREFIX, URL_MATCH_STRATEGY_REGEX).contains(matchStrategy)) {
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return Result.ofFail(-1, "invalid matchStrategy: " + matchStrategy);
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}
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predicateItemEntity.setMatchStrategy(matchStrategy);
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// 匹配串
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String pattern = predicateItem.getPattern();
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if (StringUtil.isBlank(pattern)) {
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return Result.ofFail(-1, "pattern can't be null or empty");
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}
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predicateItemEntity.setPattern(pattern);
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predicateItemEntities.add(predicateItemEntity);
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}
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entity.setPredicateItems(new LinkedHashSet<>(predicateItemEntities));
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// 检查API名称不能重复
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List<ApiDefinitionEntity> allApis = repository.findAllByMachine(MachineInfo.of(app.trim(), ip.trim(), port));
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if (allApis.stream().map(o -> o.getApiName()).anyMatch(o -> o.equals(apiName.trim()))) {
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return Result.ofFail(-1, "apiName exists: " + apiName);
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}
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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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try {
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entity = repository.save(entity);
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} catch (Throwable throwable) {
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logger.error("add gateway api error:", throwable);
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return Result.ofThrowable(-1, throwable);
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}
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if (!publishApis(app, ip, port)) {
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logger.warn("publish gateway apis fail after add");
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}
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return Result.ofSuccess(entity);
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}
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@PostMapping("/save.json")
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@AuthAction(AuthService.PrivilegeType.WRITE_RULE)
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public Result<ApiDefinitionEntity> updateApi(@RequestBody UpdateApiReqVo reqVo) {
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String app = reqVo.getApp();
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if (StringUtil.isBlank(app)) {
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return Result.ofFail(-1, "app can't be null or empty");
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}
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Long id = reqVo.getId();
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if (id == null) {
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return Result.ofFail(-1, "id can't be null");
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}
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ApiDefinitionEntity entity = repository.findById(id);
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if (entity == null) {
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return Result.ofFail(-1, "api does not exist, id=" + id);
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}
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// 匹配规则列表
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List<ApiPredicateItemVo> predicateItems = reqVo.getPredicateItems();
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if (CollectionUtils.isEmpty(predicateItems)) {
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return Result.ofFail(-1, "predicateItems can't empty");
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}
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List<ApiPredicateItemEntity> predicateItemEntities = new ArrayList<>();
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for (ApiPredicateItemVo predicateItem : predicateItems) {
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ApiPredicateItemEntity predicateItemEntity = new ApiPredicateItemEntity();
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// 匹配模式
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int matchStrategy = predicateItem.getMatchStrategy();
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if (!Arrays.asList(URL_MATCH_STRATEGY_EXACT, URL_MATCH_STRATEGY_PREFIX, URL_MATCH_STRATEGY_REGEX).contains(matchStrategy)) {
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return Result.ofFail(-1, "Invalid matchStrategy: " + matchStrategy);
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}
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predicateItemEntity.setMatchStrategy(matchStrategy);
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// 匹配串
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String pattern = predicateItem.getPattern();
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if (StringUtil.isBlank(pattern)) {
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return Result.ofFail(-1, "pattern can't be null or empty");
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}
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predicateItemEntity.setPattern(pattern);
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predicateItemEntities.add(predicateItemEntity);
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}
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entity.setPredicateItems(new LinkedHashSet<>(predicateItemEntities));
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Date date = new Date();
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entity.setGmtModified(date);
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try {
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entity = repository.save(entity);
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} catch (Throwable throwable) {
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logger.error("update gateway api error:", throwable);
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return Result.ofThrowable(-1, throwable);
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}
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if (!publishApis(app, entity.getIp(), entity.getPort())) {
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logger.warn("publish gateway apis fail after update");
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}
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return Result.ofSuccess(entity);
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}
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@PostMapping("/delete.json")
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@AuthAction(AuthService.PrivilegeType.DELETE_RULE)
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public Result<Long> deleteApi(Long id) {
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if (id == null) {
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return Result.ofFail(-1, "id can't be null");
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}
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ApiDefinitionEntity oldEntity = repository.findById(id);
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if (oldEntity == null) {
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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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} catch (Throwable throwable) {
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logger.error("delete gateway api error:", throwable);
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return Result.ofThrowable(-1, throwable);
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}
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if (!publishApis(oldEntity.getApp(), oldEntity.getIp(), oldEntity.getPort())) {
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logger.warn("publish gateway apis fail after delete");
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}
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return Result.ofSuccess(id);
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}
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private boolean publishApis(String app, String ip, Integer port) {
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List<ApiDefinitionEntity> apis = repository.findAllByApp(app);
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try {
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apiPublisher.publish(app, apis);
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//延迟加载
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delayTime();
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return true;
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} catch (Exception e) {
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logger.error("publish api error!");
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e.printStackTrace();
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return false;
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}
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}
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}
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