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org.nutz.boot.starter.loach.client.LoachClient Maven / Gradle / Ivy
package org.nutz.boot.starter.loach.client;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import org.nutz.boot.AppContext;
import org.nutz.boot.NbApp;
import org.nutz.http.Request;
import org.nutz.http.Request.METHOD;
import org.nutz.http.Response;
import org.nutz.http.Sender;
import org.nutz.ioc.Ioc;
import org.nutz.ioc.impl.PropertiesProxy;
import org.nutz.ioc.loader.annotation.Inject;
import org.nutz.ioc.loader.annotation.IocBean;
import org.nutz.json.Json;
import org.nutz.json.JsonFormat;
import org.nutz.lang.Strings;
import org.nutz.lang.hardware.NetworkType;
import org.nutz.lang.hardware.Networks;
import org.nutz.lang.random.R;
import org.nutz.lang.util.NutMap;
import org.nutz.log.Log;
import org.nutz.log.Logs;
import org.nutz.runner.NutRunner;
/**
* '泥鳅'客户端
*
* @author wendal
*
*/
@IocBean(create = "init", depose = "depose")
public class LoachClient extends NutRunner {
public LoachClient() {
super("loach.client");
}
private static final Log log = Logs.get();
@Inject
protected PropertiesProxy conf;
@Inject
protected AppContext appContext;
@Inject("refer:$ioc")
protected Ioc ioc;
@Inject
protected NbApp nbApp;
protected String id;
protected int startUpDelay;
protected ExecutorService es;
protected NutRunner updater;
protected List listeners = new LinkedList<>();
public static interface UpdateListener {
void onUpdate(Map> services);
}
public void depose() {
getLock().stop();
if (updater != null)
updater.getLock().stop();
if (es != null)
es.shutdown();
}
public void init() {
startUpDelay = conf.getInt("loach.client.startUpDelay", -1);
es = Executors.newCachedThreadPool();
id = R.UU32();
url = conf.get("loach.client.url", "http://127.0.0.1:8610/loach/v1");
for (String name : ioc.getNamesByType(UpdateListener.class)) {
addListener(ioc.get(UpdateListener.class, name));
}
setDebug(conf.getBoolean("loach.client.debug", false));
if (conf.getBoolean("loach.client.enable", true)) {
if (Strings.isBlank(conf.get("nutz.application.name"))) {
throw new RuntimeException("need nutz.application.name");
}
}
if (conf.getBoolean("loach.client.enable", true)) {
es.submit(this);
}
if (conf.getBoolean("loach.updater.enable", true)) {
updateServiceList();
updater = new NutRunner("loach.updater." + url) {
public long exec() throws Exception {
LoachClient.this.updateServiceList();
return conf.getInt("loach.client.updater.interval", 3000);
}
};
updater.setDebug(isDebug());
es.submit(updater);
}
}
public Map> getServiceList() {
return Collections.unmodifiableMap(serviceList);
}
public List getService(String name) {
if (serviceList == null)
return null;
return serviceList.get(name);
}
protected String getUrls() {
return conf.get("loach.client.url", "http://127.0.0.1:8610/loach/v1");
}
protected String getServiceName() {
return conf.get("nutz.application.name", "demo");
}
protected long getPingInterval() {
return conf.getLong("loach.client.ping.interval", 3000);
}
protected int pingRetryCount;
public String url;
protected String lastPingETag = "ABC";
protected String lastListETag = "ABC";
protected boolean regOk;
protected boolean _reg(String regData) {
try {
String regURL = url + "/reg";
if (isDebug()) {
log.debug("Reg URL :" + regURL);
log.debug("Reg Data:" + regData);
}
Request req = Request.create(regURL, METHOD.POST);
req.setData(regData);
req.getHeader().clear();
req.getHeader().asJsonContentType();
Response resp = Sender.create(req).setTimeout(3000).send();
if (resp.isOK()) {
NutMap re = Json.fromJson(NutMap.class, resp.getReader());
if (re != null && re.getBoolean("ok", false)) {
log.infof("Reg Done id=%s url=%s", id, url);
regOk = true;
return true;
}
else if (re == null) {
log.info("Reg Err, revc NULL");
return false;
}
else {
log.info("Reg Err " + re);
return false;
}
}
}
catch (Throwable e) {
log.debugf("bad url? %s %s", url, e.getMessage());
}
return false;
}
protected boolean _ping() {
try {
String pingURL = url + "/ping/" + getServiceName() + "/" + id;
if (isDebug())
log.debug("Ping URL=" + pingURL);
Request req = Request.create(pingURL, METHOD.GET);
req.getHeader().clear();
req.getHeader().set("If-None-Match", lastPingETag);
Response resp = Sender.create(req, conf.getInt("loach.client.ping.timeout", 1000)).setConnTimeout(1000).send();
String cnt = resp.getContent();
if (isDebug())
log.debug("Ping result : " + cnt);
if (resp.isOK()) {
lastPingETag = Strings.sBlank(resp.getHeader().get("ETag"), "ABC");
NutMap re = Json.fromJson(NutMap.class, cnt);
if (re != null && re.getBoolean("ok", false))
return true;
} else if (resp.getStatus() == 304) {
return true;
}
}
catch (Throwable e) {
log.debugf("bad url? %s %s", url, e.getMessage());
}
return false;
}
/**
* 主逻辑
*/
public long exec() throws Exception {
// 启动延时
if (startUpDelay > 0) {
log.debug("start up delay " + startUpDelay + "ms");
int delay = startUpDelay;
startUpDelay = 0;
return delay;
} else if (startUpDelay == -1) {
if (!nbApp.isStarted())
return 100;
}
// 心跳
if (regOk) {
// 尝试心跳,成功就是返回
if (_ping()) {
if (pingRetryCount > 0 && isDebug())
log.debug("loach client ping OK");
pingRetryCount = 0;
return getPingInterval();
} else {
if (pingRetryCount < 5) {
pingRetryCount++;
log.info("loach client ping FAIL count=" + pingRetryCount);
return getInterval();
} else {
regOk = false;
log.info("loach client ping FAIL too many time, redo reg!");
}
}
}
NutMap regInfo = new NutMap();
regInfo.put("id", id);
regInfo.put("name", getServiceName());
regInfo.put("vip", conf.get("server.vip", "127.0.0.1"));
regInfo.put("port", appContext.getServerPort(null));
regInfo.put("eth.mac", Networks.mac(NetworkType.LAN));
regInfo.put("eth.ipv4", Networks.ipv4(NetworkType.LAN));
regInfo.putAll(EXT_REG_DATA);
String regData = Json.toJson(regInfo, JsonFormat.compact());
_reg(regData);
return getInterval();
}
public Map> serviceList = new HashMap<>();
protected long lastChecked;
@SuppressWarnings("unchecked")
public void updateServiceList() {
try {
String listURL = url + "/list";
Request req = Request.create(listURL, METHOD.GET);
req.getHeader().clear();
req.getHeader().set("If-None-Match", lastListETag);
Response resp = Sender.create(req).setConnTimeout(1000).setTimeout(3000).send();
if (resp.isOK()) {
serviceList = (Map>) Json.fromJson(NutMap.class, resp.getReader()).get("data");
for (UpdateListener listener : listeners) {
listener.onUpdate(serviceList);
}
lastChecked = System.currentTimeMillis();
lastListETag = Strings.sBlank(resp.getHeader().get("ETag", "ABC"));
} else if (resp.getStatus() == 304) {
// ok
lastChecked = System.currentTimeMillis();
}
}
catch (Throwable e) {
log.debugf("bad url? %s %s", url, e.getMessage());
}
}
public void addListener(UpdateListener listener) {
if (this.listeners.contains(listener))
return;
listeners.add(listener);
}
public static NutMap EXT_REG_DATA = new NutMap();
}
