SOUL Admin & 网关 Http长轮询 数据同步
书接上回, 使用Http长轮询, 数据同步,
soul-admin/src/main/resources/application.yml
soul:
sync:
# websocket:
# enabled: true
# zookeeper:
# url: localhost:2181
# sessionTimeout: 5000
# connectionTimeout: 2000
http:
enabled: true
soul-bootstrap/src/main/resources/application-local.yml, 同理
soul :
sync:
# websocket :
# urls: ws://localhost:9095/websocket
# zookeeper:
# url: localhost:2181
# sessionTimeout: 5000
# connectionTimeout: 2000
http:
url : http://localhost:9095
soul-bootstrap/pom.xml 已经添加了
<!--soul data sync start use http-->
<dependency>
<groupId>org.dromara</groupId>
<artifactId>soul-spring-boot-starter-sync-data-http</artifactId>
<version>${project.version}</version>
</dependency>
分别启动 soul-admin, soul-bootstrap, 注意目前使用http长连接, bootstrap启动前需要soul-admin已经启动完成, 不然会由于无法通过http连接admin而无法启动,
接下来正常启动我们看到soul-bootstrap log
2021-01-23 00:36:08.279 INFO 62417 --- [ main] o.d.s.s.data.http.HttpSyncDataService : request configs: [http://localhost:9095/configs/fetch?groupKeys=APP_AUTH&groupKeys=PLUGIN&groupKeys=RULE&groupKeys=SELECTOR&groupKeys=META_DATA]
2021-01-23 00:36:08.562 INFO 62417 --- [onPool-worker-3] o.d.s.s.d.h.refresh.AppAuthDataRefresh : clear all appAuth data cache
2021-01-23 00:36:08.570 INFO 62417 --- [ main] o.d.s.s.data.http.HttpSyncDataService : get latest configs: [{
"code":200,"message":"success","data":{
"META_DATA":{
"md5":"f96c44af66298be2e76a6b0a55a7b629","lastModifyTime":1611333355313,"data":[{
"id":"1351785376513667072","appName":"springCloud-test","contextPath":null,"path":"/springcloud/**","rpcType":"springCloud","serviceName":"springCloud-test","methodName":"/springcloud","parameterTypes":null,"rpcExt":null,"enabled":true},{
"id":"1351837754670669824","appName":"sofa","contextPath":null,"path":"/sofa/insert","rpcType":"sofa","serviceName":"org.dromara.soul.examples.dubbo.api.service.DubboTestService","methodName":"insert","parameterTypes":"org.dromara.soul.examples.dubbo.api.entity.DubboTest","rpcExt":"{\"loadbalance\":\"hash\",\"retries\":3,\"timeout\":-1}","enabled":true},{
"id":"1351837763067666432","appName":"sofa","contextPath":null,"path":"/sofa/findAll","rpcType":"sofa","serviceName":"org.dromara.soul.examples.dubbo.api.service.DubboTestService","methodName":"findAll","parameterTypes":null,"rpcExt":"{\"loadbalance\":\"hash\",\"retries\":3,\"timeout\":-1}","enabled":true},{
"id":"1351837768541233152","appName":"sofa","contextPath":null,"path":"/sofa/findById","rpcType":"sofa","serviceName":"org.dromara.soul.examples.dubbo.api.service.DubboTestService","methodName":"findById","parameterTypes":"java.lang.String","rpcExt":"{\"loadbalance\":\"hash\",\"retries\":3,\"timeout\":-1}","enabled":true}]},"SELECTOR":{
"md5":"55e041ea36b518946ef09f9ed5d16ffe","lastModifyTime":1611333355190,"data":[{
"id":"1351785378313023488","pluginId":"8","pluginName":"springCloud","name":"/springcloud","matchMode":0,"type":1,"sort":1,"enabled":true,"loged":true,"continued":true,"handle":"{\"serviceId\":\"springCloud-test\"}","conditionList":[{
"paramType":"uri","operator":"match","paramName":"/","paramValue":"/springcloud/**"}]},{
"id":"1351837756520357888","pluginId":"11","pluginName":"sofa","name":"/sofa","matchMode":0,"type":1,"sort":1,"enabled":true,"loged":true,"continued":true,"handle":"sofa","conditionList":[{
"paramType":"uri","operator":"match","paramName":"/","paramValue":"/sofa/**"}]}]},"PLUGIN":{
"md5":"5e9a7365763848a4498b445a5a35c0b4","lastModifyTime":1611333351898,"data":[{
"id":"1","name":"sign","config":null,"role":1,"enabled":false},{
"id":"10","name":"sentinel","config":null,"role":1,"enabled":false},{
"id":"11","name":"sofa","config":"{\"protocol\":\"zookeeper\",\"register\":\"127.0.0.1:2181\"}","role":0,"enabled":true},{
"id":"12","name":"resilience4j","config":null,"role":1,"enabled":false},{
"id":"13","name":"tars","config":null,"role":1,"enabled":false},{
"id":"14","name":"context_path","config":null,"role":1,"enabled":false},{
"id":"2","name":"waf","config":"{\"model\":\"black\"}","role":1,"enabled":false},{
"id":"3","name":"rewrite","config":null,"role":1,"enabled":false},{
"id":"4","name":"rate_limiter","config":"{\"master\":\"mymaster\",\"mode\":\"standalone\",\"url\":\"192.168.1.1:6379\",\"password\":\"abc\"}","role":1,"enabled":false},{
"id":"5","name":"divide","config":null,"role":0,"enabled":true},{
"id":"6","name":"dubbo","config":"{\"register\":\"zookeeper://localhost:2181\"}","role":1,"enabled":false},{
"id":"7","name":"monitor","config":"{\"metricsName\":\"prometheus\",\"host\":\"localhost\",\"port\":\"9190\",\"async\":\"true\"}","role":1,"enabled":false},{
"id":"8","name":"springCloud","config":null,"role":1,"enabled":true},{
"id":"9","name":"hystrix","config":null,"role":0,"enabled":false}]},"APP_AUTH":{
"md5":"d751713988987e9331980363e24189ce","lastModifyTime":1611333351778,"data":[]},"RULE":{
"md5":"79088c310f2d3ec32a2c366957fc7165","lastModifyTime":1611333354636,"data":[{
"id":"1351785381014155264","name":"/springcloud/order/findById","pluginName":"springCloud","selectorId":"1351785378313023488","matchMode":0,"sort":1,"enabled":true,"loged":true,"handle":"{\"path\":\"/springcloud/order/findById\",\"timeout\":3000}","conditionDataList":[{
"paramType":"uri","operator":"=","paramName":"/","paramValue":"/springcloud/order/findById"}]},{
"id":"1351785386563219456","name":"/springcloud/order/path/**","pluginName":"springCloud","selectorId":"1351785378313023488","matchMode":0,"sort":1,"enabled":true,"loged":true,"handle":"{\"path\":\"/springcloud/order/path/**\",\"timeout\":3000}","conditionDataList":[{
"paramType":"uri","operator":"match","paramName":"/","paramValue":"/springcloud/order/path/**"}]},{
"id":"1351785391931928576","name":"/springcloud/order/path/**/name","pluginName":"springCloud","selectorId":"1351785378313023488","matchMode":0,"sort":1,"enabled":true,"loged":true,"handle":"{\"path\":\"/springcloud/order/path/**/name\",\"timeout\":3000}","conditionDataList":[{
"paramType":"uri","operator":"match","paramName":"/","paramValue":"/springcloud/order/path/**/name"}]},{
"id":"1351785398240161792","name":"/springcloud/order/save","pluginName":"springCloud","selectorId":"1351785378313023488","matchMode":0,"sort":1,"enabled":true,"loged":true,"handle":"{\"path\":\"/springcloud/order/save\",\"timeout\":3000}","conditionDataList":[{
"paramType":"uri","operator":"=","paramName":"/","paramValue":"/springcloud/order/save"}]},{
"id":"1351785403906666496","name":"/springcloud/test/**","pluginName":"springCloud","selectorId":"1351785378313023488","matchMode":0,"sort":1,"enabled":true,"loged":true,"handle":"{\"path\":\"/springcloud/test/**\",\"timeout\":3000}","conditionDataList":[{
"paramType":"uri","operator":"match","paramName":"/","paramValue":"/springcloud/test/**"}]},{
"id":"1351837759351513088","name":"/sofa/insert","pluginName":"sofa","selectorId":"1351837756520357888","matchMode":0,"sort":1,"enabled":true,"loged":true,"handle":"{\"retries\":0,\"loadBalance\":\"random\",\"timeout\":3000}","conditionDataList":[{
"paramType":"uri","operator":"=","paramName":"/","paramValue":"/sofa/insert"}]},{
"id":"1351837764875411456","name":"/sofa/findAll","pluginName":"sofa","selectorId":"1351837756520357888","matchMode":0,"sort":1,"enabled":true,"loged":true,"handle":"{\"retries\":0,\"loadBalance\":\"random\",\"timeout\":3000}","conditionDataList":[{
"paramType":"uri","operator":"=","paramName":"/","paramValue":"/sofa/findAll"}]},{
"id":"1351837770344783872","name":"/sofa/findById","pluginName":"sofa","selectorId":"1351837756520357888","matchMode":0,"sort":1,"enabled":true,"loged":true,"handle":"{\"retries\":0,\"loadBalance\":\"random\",\"timeout\":3000}","conditionDataList":[{
"paramType":"uri","operator":"=","paramName":"/","paramValue":"/sofa/findById"}]}]}}}]
显然我们通过 http://localhost:9095/configs/fetch 同步了配置
接下来修改一个配置,可以看到
admin log
2021-01-23 00:42:55.071 INFO 62391 --- [0.0-9095-exec-5] o.d.s.a.l.AbstractDataChangedListener : update config cache[SELECTOR], old: {
group='SELECTOR', md5='55e041ea36b518946ef09f9ed5d16ffe', lastModifyTime=1611333660488}, updated: {
group='SELECTOR', md5='c8fa3ad3868f3ea1947f3641c753e888', lastModifyTime=1611333775071}
2021-01-23 00:42:55.077 INFO 62391 --- [-long-polling-2] a.l.h.HttpLongPollingDataChangedListener : send response with the changed group,ip=127.0.0.1, group=SELECTOR, changeTime=1611333775074
bootstrap log, 看上去像是受到通知,然后去拉的配置
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2021-01-23 00:42:55.079 INFO 62417 --- [-long-polling-1] o.d.s.s.data.http.HttpSyncDataService : Group config changed: [SELECTOR]
2021-01-23 00:42:55.081 INFO 62417 --- [-long-polling-1] o.d.s.s.data.http.HttpSyncDataService : request configs: [http://localhost:9095/configs/fetch?groupKeys=SELECTOR]
2021-01-23 00:42:55.127 INFO 62417 --- [-long-polling-1] o.d.s.s.d.h.refresh.AbstractDataRefresh : update SELECTOR config: {
"md5":"c8fa3ad3868f3ea1947f3641c753e888","lastModifyTime":1611333775071,"data":[{
"id":"1351785378313023488","pluginId":"8","pluginName":"springCloud","name":"/springcloud","matchMode":0,"type":1,"sort":1,"enabled":true,"loged":true,"continued":true,"handle":"{\"serviceId\":\"springCloud-test\"}","conditionList":[{
"paramType":"uri","operator":"match","paramName":"/","paramValue":"/springcloud/**"}]},{
"id":"1351837756520357888","pluginId":"11","pluginName":"sofa","name":"/sofa","matchMode":0,"type":1,"sort":1,"enabled":true,"loged":true,"continued":true,"handle":"sofa","conditionList":[{
"paramType":"uri","operator":"match","paramName":"/","paramValue":"/sofa/**"}]},{
"id":"1352658003622137856","pluginId":"5","pluginName":"divide","name":"mo","matchMode":0,"type":1,"sort":1,"enabled":true,"loged":true,"continued":true,"handle":"[{\"upstreamHost\":\"baidu.com\",\"protocol\":\"http://\",\"upstreamUrl\":\"baidu.com\",\"weight\":\"50\",\"status\":true,\"timestamp\":\"0\",\"warmup\":\"0\"}]","conditionList":[{
"paramType":"uri","operator":"\u003d","paramName":"/","paramValue":"/"}]}]}
2021-01-23 00:42:55.135 INFO 62417 --- [-long-polling-1] o.d.s.s.data.http.HttpSyncDataService : get latest configs: [{
"code":200,"message":"success","data":{
"SELECTOR":{
"md5":"c8fa3ad3868f3ea1947f3641c753e888","lastModifyTime":1611333775071,"data":[{
"id":"1351785378313023488","pluginId":"8","pluginName":"springCloud","name":"/springcloud","matchMode":0,"type":1,"sort":1,"enabled":true,"loged":true,"continued":true,"handle":"{\"serviceId\":\"springCloud-test\"}","conditionList":[{
"paramType":"uri","operator":"match","paramName":"/","paramValue":"/springcloud/**"}]},{
"id":"1351837756520357888","pluginId":"11","pluginName":"sofa","name":"/sofa","matchMode":0,"type":1,"sort":1,"enabled":true,"loged":true,"continued":true,"handle":"sofa","conditionList":[{
"paramType":"uri","operator":"match","paramName":"/","paramValue":"/sofa/**"}]},{
"id":"1352658003622137856","pluginId":"5","pluginName":"divide","name":"mo","matchMode":0,"type":1,"sort":1,"enabled":true,"loged":true,"continued":true,"handle":"[{\"upstreamHost\":\"baidu.com\",\"protocol\":\"http://\",\"upstreamUrl\":\"baidu.com\",\"weight\":\"50\",\"status\":true,\"timestamp\":\"0\",\"warmup\":\"0\"}]","conditionList":[{
"paramType":"uri","operator":"=","paramName":"/","paramValue":"/"}]}]}}}]
根据log查看HttpSyncDataService逻辑, 同样实现了SyncDataService接口
//构造方法调用start方法
private void start() {
// It could be initialized multiple times, so you need to control that.
if (RUNNING.compareAndSet(false, true)) {
// fetch all group configs.
this.fetchGroupConfig(ConfigGroupEnum.values());
int threadSize = serverList.size();
this.executor = new ThreadPoolExecutor(threadSize, threadSize, 60L, TimeUnit.SECONDS,
new LinkedBlockingQueue<>(),
SoulThreadFactory.create("http-long-polling", true));
// start long polling, each server creates a thread to listen for changes.
this.serverList.forEach(server -> this.executor.execute(new HttpLongPollingTask(server)));
} else {
log.info("soul http long polling was started, executor=[{}]", executor);
}
}
class HttpLongPollingTask implements Runnable {
private String server;
private final int retryTimes = 3;
HttpLongPollingTask(final String server) {
this.server = server;
}
@Override
public void run() {
while (RUNNING.get()) {
for (int time = 1; time <= retryTimes; time++) {
try {
//核心长轮询, 看下面
doLongPolling(server);
} catch (Exception e) {
// print warnning log.
if (time < retryTimes) {
log.warn("Long polling failed, tried {} times, {} times left, will be suspended for a while! {}",
time, retryTimes - time, e.getMessage());
ThreadUtils.sleep(TimeUnit.SECONDS, 5);
continue;
}
// print error, then suspended for a while.
log.error("Long polling failed, try again after 5 minutes!", e);
ThreadUtils.sleep(TimeUnit.MINUTES, 5);
}
}
}
log.warn("Stop http long polling.");
}
}
private void doLongPolling(final String server) {
MultiValueMap<String, String> params = new LinkedMultiValueMap<>(8);
for (ConfigGroupEnum group : ConfigGroupEnum.values()) {
ConfigData<?> cacheConfig = factory.cacheConfigData(group);
String value = String.join(",", cacheConfig.getMd5(), String.valueOf(cacheConfig.getLastModifyTime()));
params.put(group.name(), Lists.newArrayList(value));
}
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
HttpEntity httpEntity = new HttpEntity(params, headers);
String listenerUrl = server + "/configs/listener";
log.debug("request listener configs: [{}]", listenerUrl);
JsonArray groupJson = null;
try {
//请求listener查看是否有变坏
String json = this.httpClient.postForEntity(listenerUrl, httpEntity, String.class).getBody();
log.debug("listener result: [{}]", json);
groupJson = GSON.fromJson(json, JsonObject.class).getAsJsonArray("data");
} catch (RestClientException e) {
String message = String.format("listener configs fail, server:[%s], %s", server, e.getMessage());
throw new SoulException(message, e);
}
if (groupJson != null) {
// fetch group configuration async.
ConfigGroupEnum[] changedGroups = GSON.fromJson(groupJson, ConfigGroupEnum[].class);
if (ArrayUtils.isNotEmpty(changedGroups)) {
log.info("Group config changed: {}", Arrays.toString(changedGroups));
//如果有变化,发送请求获取配置
this.doFetchGroupConfig(server, changedGroups);
}
}
}
CongfigController
//依赖于HttpLongPollingDataChangedListener, HttpLongPollingDataChangedListener依赖于配置的soul.sync.http.enable
@ConditionalOnBean(HttpLongPollingDataChangedListener.class)
@RestController
@RequestMapping("/configs")
@Slf4j
public class ConfigController {
@PostMapping(value = "/listener")
public void listener(final HttpServletRequest request, final HttpServletResponse response) {
longPollingListener.doLongPolling(request, response);
}
}
public void doLongPolling(final HttpServletRequest request, final HttpServletResponse response) {
//对比请求携带的配置md5, 如果与当前不一致证明已经更新, 这里面细节就先不详看了
List<ConfigGroupEnum> changedGroup = compareChangedGroup(request);
String clientIp = getRemoteIp(request);
// 如果有变化直接就返回 变化的配置group
if (CollectionUtils.isNotEmpty(changedGroup)) {
this.generateResponse(response, changedGroup);
log.info("send response with the changed group, ip={}, group={}", clientIp, changedGroup);
return;
}
// listen for configuration changed.
final AsyncContext asyncContext = request.startAsync();
// AsyncContext.settimeout() does not timeout properly, so you have to control it yourself
asyncContext.setTimeout(0L);
// block client's thread.
scheduler.execute(new LongPollingClient(asyncContext, clientIp, HttpConstants.SERVER_MAX_HOLD_TIMEOUT));
}