Repository: nacos-group/nacos-sdk-cpp
Branch: master
Commit: 2b4104d25247
Files: 239
Total size: 1.2 MB
Directory structure:
gitextract_q11n9gsq/
├── .gitignore
├── LICENSE
├── README.md
├── README_zh_CN.md
├── examples/
│ ├── IntegratingIntoYourProject.cpp
│ ├── generate_examples.sh
│ ├── getAllInstances.cpp
│ ├── getConfig.cpp
│ ├── listenToKeys.cpp
│ ├── registerInstances.cpp
│ ├── setConfig.cpp
│ └── subscribeServices.cpp
├── include/
│ ├── Compatibility.h
│ ├── Nacos.h
│ ├── NacosExceptions.h
│ ├── NacosString.h
│ ├── Properties.h
│ ├── ResourceGuard.h
│ ├── config/
│ │ └── ConfigService.h
│ ├── constant/
│ │ ├── ConfigConstant.h
│ │ ├── NamingConstant.h
│ │ ├── PropertyKeyConst.h
│ │ └── UtilAndComs.h
│ ├── factory/
│ │ ├── INacosServiceFactory.h
│ │ └── NacosFactoryFactory.h
│ ├── listen/
│ │ └── Listener.h
│ ├── naming/
│ │ ├── ChangeAdvice.h
│ │ ├── Cluster.h
│ │ ├── Instance.h
│ │ ├── ListView.h
│ │ ├── NamingMaintainService.h
│ │ ├── NamingService.h
│ │ ├── ServiceInfo.h
│ │ ├── ServiceInfo2.h
│ │ ├── selectors/
│ │ │ ├── HealthInstanceSelector.h
│ │ │ ├── RandomByWeightSelector.h
│ │ │ ├── RandomSelector.h
│ │ │ └── Selector.h
│ │ └── subscribe/
│ │ └── EventListener.h
│ ├── server/
│ │ └── ServerSelector.h
│ └── thread/
│ └── AtomicInt.h
├── nacos-cpp-cli.properties
├── src/
│ ├── NacosExceptions.cpp
│ ├── NacosString.cpp
│ ├── config/
│ │ ├── AppConfigManager.cpp
│ │ ├── AppConfigManager.h
│ │ ├── ConcurrentDiskUtil.cpp
│ │ ├── ConcurrentDiskUtil.h
│ │ ├── ConfigProxy.cpp
│ │ ├── ConfigProxy.h
│ │ ├── IOUtils.cpp
│ │ ├── IOUtils.h
│ │ ├── JVMUtil.h
│ │ ├── LocalSnapshotManager.cpp
│ │ ├── LocalSnapshotManager.h
│ │ ├── NacosConfigService.cpp
│ │ ├── NacosConfigService.h
│ │ ├── SnapShotSwitch.cpp
│ │ └── SnapShotSwitch.h
│ ├── constant/
│ │ ├── ConfigConstant.cpp
│ │ ├── NamingConstant.cpp
│ │ ├── PropertyKeyConst.cpp
│ │ └── UtilAndComs.cpp
│ ├── crypto/
│ │ ├── MACProvider.cpp
│ │ ├── MACProvider.h
│ │ ├── SignatureTool.h
│ │ ├── base64/
│ │ │ └── base64.h
│ │ ├── hmac_sha1/
│ │ │ ├── LICENSE
│ │ │ ├── README.md
│ │ │ ├── hmac/
│ │ │ │ ├── hmac.h
│ │ │ │ └── hmac_sha1.cpp
│ │ │ └── sha/
│ │ │ ├── sha.h
│ │ │ └── sha1.cpp
│ │ └── md5/
│ │ ├── md5.cpp
│ │ └── md5.h
│ ├── debug/
│ │ └── DebugAssertion.h
│ ├── factory/
│ │ ├── NacosFactoryFactory.cpp
│ │ ├── NacosServiceFactory.cpp
│ │ ├── NacosServiceFactory.h
│ │ ├── ObjectConfigData.cpp
│ │ └── ObjectConfigData.h
│ ├── http/
│ │ ├── HTTPCli.cpp
│ │ ├── HTTPCli.h
│ │ ├── HttpDelegate.h
│ │ ├── HttpStatus.h
│ │ ├── IHttpCli.h
│ │ └── delegate/
│ │ ├── NacosAuthHttpDelegate.cpp
│ │ ├── NacosAuthHttpDelegate.h
│ │ ├── NoOpHttpDelegate.cpp
│ │ └── NoOpHttpDelegate.h
│ ├── init/
│ │ ├── Init.cpp
│ │ └── Init.h
│ ├── json/
│ │ ├── JSON.cpp
│ │ ├── JSON.h
│ │ └── rapidjson/
│ │ ├── allocators.h
│ │ ├── cursorstreamwrapper.h
│ │ ├── document.h
│ │ ├── encodedstream.h
│ │ ├── encodings.h
│ │ ├── error/
│ │ │ ├── en.h
│ │ │ └── error.h
│ │ ├── filereadstream.h
│ │ ├── filewritestream.h
│ │ ├── fwd.h
│ │ ├── internal/
│ │ │ ├── biginteger.h
│ │ │ ├── diyfp.h
│ │ │ ├── dtoa.h
│ │ │ ├── ieee754.h
│ │ │ ├── itoa.h
│ │ │ ├── meta.h
│ │ │ ├── pow10.h
│ │ │ ├── regex.h
│ │ │ ├── stack.h
│ │ │ ├── strfunc.h
│ │ │ ├── strtod.h
│ │ │ └── swap.h
│ │ ├── istreamwrapper.h
│ │ ├── memorybuffer.h
│ │ ├── memorystream.h
│ │ ├── msinttypes/
│ │ │ ├── inttypes.h
│ │ │ └── stdint.h
│ │ ├── ostreamwrapper.h
│ │ ├── pointer.h
│ │ ├── prettywriter.h
│ │ ├── rapidjson.h
│ │ ├── reader.h
│ │ ├── schema.h
│ │ ├── stream.h
│ │ ├── stringbuffer.h
│ │ └── writer.h
│ ├── listen/
│ │ ├── ClientWorker.cpp
│ │ ├── ClientWorker.h
│ │ ├── ListeningData.h
│ │ └── OperateItem.h
│ ├── log/
│ │ ├── Logger.cpp
│ │ └── Logger.h
│ ├── naming/
│ │ ├── Cluster.cpp
│ │ ├── Instance.cpp
│ │ ├── NacosNamingMaintainService.cpp
│ │ ├── NacosNamingMaintainService.h
│ │ ├── NacosNamingService.cpp
│ │ ├── NacosNamingService.h
│ │ ├── NamingProxy.cpp
│ │ ├── NamingProxy.h
│ │ ├── ServiceInfo.cpp
│ │ ├── beat/
│ │ │ ├── BeatInfo.cpp
│ │ │ ├── BeatInfo.h
│ │ │ ├── BeatReactor.cpp
│ │ │ ├── BeatReactor.h
│ │ │ ├── BeatTask.cpp
│ │ │ └── BeatTask.h
│ │ ├── cache/
│ │ │ ├── ChangeAdvice.cpp
│ │ │ ├── NamingCache.cpp
│ │ │ └── NamingCache.h
│ │ ├── selectors/
│ │ │ ├── HealthInstanceSelector.cpp
│ │ │ ├── RandomByWeightSelector.cpp
│ │ │ └── RandomSelector.cpp
│ │ └── subscribe/
│ │ ├── EventDispatcher.cpp
│ │ ├── EventDispatcher.h
│ │ ├── EventListener.cpp
│ │ ├── HostReactor.cpp
│ │ ├── HostReactor.h
│ │ ├── SubscriptionPoller.cpp
│ │ ├── SubscriptionPoller.h
│ │ ├── UdpNamingServiceListener.cpp
│ │ └── UdpNamingServiceListener.h
│ ├── security/
│ │ ├── SecurityManager.cpp
│ │ └── SecurityManager.h
│ ├── server/
│ │ ├── NacosServerInfo.h
│ │ ├── ServerListManager.cpp
│ │ └── ServerListManager.h
│ ├── thread/
│ │ ├── BlockingQueue.h
│ │ ├── DelayedThreadPool.cpp
│ │ ├── DelayedThreadPool.h
│ │ ├── Mutex.h
│ │ ├── RWLock.h
│ │ ├── Task.h
│ │ ├── Thread.cpp
│ │ ├── Thread.h
│ │ ├── ThreadLocal.h
│ │ ├── ThreadPool.cpp
│ │ ├── ThreadPool.h
│ │ ├── Tid.cpp
│ │ └── Tid.h
│ └── utils/
│ ├── ConfigParserUtils.cpp
│ ├── ConfigParserUtils.h
│ ├── DirUtils.cpp
│ ├── DirUtils.h
│ ├── Env.h
│ ├── GroupKey.h
│ ├── NamingUtils.h
│ ├── NetUtils.cpp
│ ├── NetUtils.h
│ ├── ParamUtils.h
│ ├── RandomUtils.cpp
│ ├── RandomUtils.h
│ ├── SequenceProvider.h
│ ├── TimeUtils.cpp
│ ├── TimeUtils.h
│ ├── UuidUtils.cpp
│ ├── UuidUtils.h
│ ├── url.cpp
│ └── url.h
└── test/
├── allinone.cpp
└── testcase/
├── AssertString.cpp
├── DebugTest.cpp
├── testAppConfigManager.cpp
├── testCache.cpp
├── testDelayedThreadPool.cpp
├── testDeleteConfig.cpp
├── testDeleteListenedKeys.cpp
├── testEndpointWithNamingSvc.cpp
├── testGetAllInstances.cpp
├── testGetConfig.cpp
├── testGetServiceNames.cpp
├── testHttpRequest.cpp
├── testIOUtils.cpp
├── testInstanceSelector.cpp
├── testJson2BizObjects.cpp
├── testListenWorker.cpp
├── testListeningKeys.cpp
├── testListeningKeysWithHttpPrefix.cpp
├── testMAC.cpp
├── testMD5.cpp
├── testMaintainInstances.cpp
├── testMaintainServices.cpp
├── testNamingService.cpp
├── testNamingSubscribe.cpp
├── testNetUtils.cpp
├── testPublishConfig.cpp
├── testPublishConfigWithHttpPrefix.cpp
├── testRapidJson.cpp
├── testSequenceProvider.cpp
├── testServerListManager.cpp
├── testStringExplode.cpp
├── testThreadLocal.cpp
├── testThreadSmoke.cpp
├── testURL.cpp
└── testUUID.cpp
================================================
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================================================
FILE: README.md
================================================
[中文版本说明请点这里](https://github.com/nacos-group/nacos-sdk-cpp/blob/master/README_zh_CN.md)
# Nacos-sdk-cpp
Nacos-sdk-cpp for c++ client allows users to access Nacos service, it supports service discovery and dynamic configuration.
[](https://gitter.im/alibaba/nacos?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge) [](https://www.apache.org/licenses/LICENSE-2.0.html)
# Quick Examples
## Setup project
Download the source and run the following command in bash:
```
cd nacos-sdk-cpp
cmake .
make
```
a libnacos-cli.so and a nacos-cli.out will be generated
run `./nacos-cli.out` to perform test on the library
run `make install` to install the libnacos-cli to your system library path
**Note:** You need to run a nacos server on your local machine listening on port 8848 to go through the whole test
One of the testcases will test endpoint functionality, so **you also need** to run a simple http server on port 80 which provides the following content:
`127.0.0.1:8848`
**on path /nacos/endpoint0**
**All these examples could be found in nacos-sdk-cpp/examples/**
## Integrate the library into your project
Here is an example showing how to integrate the library(.so) into your project:
IntegratingIntoYourProject.cpp:
```C++
#include
#include "Nacos.h"
using namespace std;
using namespace nacos;
int main() {
Properties props;
props[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1:8848";//Server address
NacosServiceFactory *factory = new NacosServiceFactory(props);
ResourceGuard _guardFactory(factory);
ConfigService *n = factory->CreateConfigService();
ResourceGuard _serviceFactory(n);
NacosString ss = "";
try {
ss = n->getConfig("k", NULLSTR, 1000);
}
catch (NacosException &e) {
cout <<
"Request failed with curl code:" << e.errorcode() << endl <<
"Reason:" << e.what() << endl;
return -1;
}
cout << ss << endl;
return 0;
}
```
`g++ -I/usr/local/include/nacos/ IntegratingIntoYourProject.cpp -lnacos-cli -o integrated.out`
Start a nacos on your localmachine listening on port 8848, and run `./integrated.out`
Then you'll see:
`SuccessfullyIntegrated`
## If you are using a static lib(.a):
Assume that the file you are compiling resides in the same directory as the .a library, please use the following command:
`g++ -I/usr/local/include/nacos/ IntegratingIntoYourProject.cpp -lcurl -lz -L. -lnacos-cli-static -o integrated.out`
-lcurl -lz Specifies the curl and lz library used by libnacos
-L. -lnacos-cli-static links the static libnacos library resides in the same directory as IntegratingIntoYourProject.cpp
## Configuration
### Get Config
getConfig.cpp:
```C++
#include
#include "Nacos.h"
using namespace std;
using namespace nacos;
int main() {
Properties props;
props[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1:8848";//Server address
NacosServiceFactory *factory = new NacosServiceFactory(props);
ResourceGuard _guardFactory(factory);
ConfigService *n = factory->CreateConfigService();
ResourceGuard _serviceFactory(n);
NacosString ss = "";
try {
ss = n->getConfig("k", NULLSTR, 1000);
}
catch (NacosException &e) {
cout <<
"Request failed with curl code:" << e.errorcode() << endl <<
"Reason:" << e.what() << endl;
return -1;
}
cout << ss << endl;
return 0;
}
```
### Publish Config
setConfig.cpp:
```C++
#include
#include "Nacos.h"
using namespace std;
using namespace nacos;
int main() {
Properties props;
props[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1:8848";//server address
NacosServiceFactory *factory = new NacosServiceFactory(props);
ResourceGuard _guardFactory(factory);
ConfigService *n = factory->CreateConfigService();
ResourceGuard _serviceFactory(n);
bool bSucc = false;
NacosString ss = "";
try {
bSucc = n->publishConfig("Cfg_key", NULLSTR, "Cfg_val");
int retry = 0;
ss = n->getConfig("Cfg_key", NULLSTR, 1000);
while (!(ss == "Cfg_val") && retry++ < 10) {
ss = n->getConfig("Cfg_key", NULLSTR, 1000);
}
if (!(ss == "Cfg_val")) {
throw NacosException(0, "getConfig() failed.");
}
}
catch (NacosException &e) {
cout <<
"Request failed with curl code:" << e.errorcode() << endl <<
"Reason:" << e.what() << endl;
return -1;
}
cout << "Publishing Key:Cfg_key with value:Cfg_val result:" << bSucc << endl;
return 0;
}
```
### Listen to key change & Cancel listening
listenToKeys.cpp:
```C++
#include
#include "Nacos.h"
using namespace std;
using namespace nacos;
class MyListener : public Listener {
private:
int num;
public:
MyListener(int num) {
this->num = num;
}
void receiveConfigInfo(const NacosString &configInfo) {
cout << "===================================" << endl;
cout << "Watcher" << num << endl;
cout << "Watched Key UPDATED:" << configInfo << endl;
cout << "===================================" << endl;
}
};
int main() {
Properties props;
props[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1:8848";
NacosServiceFactory *factory = new NacosServiceFactory(props);
ResourceGuard _guardFactory(factory);
ConfigService *n = factory->CreateConfigService();
ResourceGuard _serviceFactory(n);
MyListener *theListener = new MyListener(1);//You don't need to free it, since it will be deleted by the function removeListener
n->addListener("dqid", NULLSTR, theListener);//All changes on the key dqid will be received by MyListener
cout << "Input a character to continue" << endl;
getchar();
cout << "remove listener" << endl;
n->removeListener("dqid", NULLSTR, theListener);//Cancel listening
getchar();
return 0;
}
```
## Naming
### Register Instance & Unregister Instance
registerInstances.cpp:
```C++
#include
#include
#include "Nacos.h"
using namespace std;
using namespace nacos;
int main() {
Properties configProps;
configProps[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1";
NacosServiceFactory *factory = new NacosServiceFactory(configProps);
ResourceGuard _guardFactory(factory);
NamingService *namingSvc = factory->CreateNamingService();
ResourceGuard _serviceFactory(namingSvc);
Instance instance;
instance.clusterName = "DefaultCluster";
instance.ip = "127.0.0.1";
instance.port = 2333;
instance.instanceId = "1";
instance.ephemeral = true;
//Registers 5 services named TestNamingService1...5
try {
for (int i = 0; i < 5; i++) {
NacosString serviceName = "TestNamingService" + NacosStringOps::valueOf(i);
instance.port = 2000 + i;
namingSvc->registerInstance(serviceName, instance);
}
}
catch (NacosException &e) {
cout << "encounter exception while registering service instance, raison:" << e.what() << endl;
return -1;
}
sleep(30);
try {
for (int i = 0; i < 5; i++) {
NacosString serviceName = "TestNamingService" + NacosStringOps::valueOf(i);
namingSvc->deregisterInstance(serviceName, "127.0.0.1", 2000 + i);
sleep(1);
}
}
catch (NacosException &e) {
cout << "encounter exception while registering service instance, raison:" << e.what() << endl;
return -1;
}
sleep(30);
return 0;
}
```
### Subscribe & Unsubscribe
subscribeServices.cpp:
```C++
#include
#include "Nacos.h"
using namespace std;
using namespace nacos;
class MyServiceListener : public EventListener {
private:
int num;
public:
MyServiceListener(int num) {
this->num = num;
}
void receiveNamingInfo(const ServiceInfo &serviceInfo){
cout << "===================================" << endl;
cout << "Watcher: " << num << endl;
cout << "Watched service UPDATED: " << serviceInfo.toInstanceString() << endl;
cout << "===================================" << endl;
}
};
int main() {
Properties props;
props[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1:8848";
//Interval for poller to check the status of subscribed services(unit:Ms), 30000 by default
//Here we set it to 5000 to see the output more quick
props[PropertyKeyConst::SUBSCRIPTION_POLL_INTERVAL] = "5000";
NacosServiceFactory *factory = new NacosServiceFactory(props);
ResourceGuard _guardFactory(factory);
NamingService *n = factory->CreateNamingService();
ResourceGuard _serviceFactory(n);
n->subscribe("ss", new MyServiceListener(1));
cout << "Press any key to register services" << endl;
getchar();
n->registerInstance("ss", "127.0.0.1", 33);
n->registerInstance("ss", "127.0.0.1", 34);
cout << "Press any key to deregister services" << endl;
getchar();
n->deregisterInstance("ss", "127.0.0.1", 33);
n->deregisterInstance("ss", "127.0.0.1", 34);
cout << "All instances Unregistered, press any key to finish testing" << endl;
getchar();
return 0;
}
```
### Get all instances of a service
getAllInstances.cpp:
```C++
#include
#include
#include "Nacos.h"
using namespace std;
using namespace nacos;
int main() {
Properties configProps;
configProps[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1";
NacosServiceFactory *factory = new NacosServiceFactory(configProps);
ResourceGuard _guardFactory(factory);
NamingService *namingSvc = factory->CreateNamingService();
ResourceGuard _guardService(namingSvc);
list instances = namingSvc->getAllInstances("TestNamingService1");
cout << "getAllInstances from server:" << endl;
for (list::iterator it = instances.begin();
it != instances.end(); it++) {
cout << "Instance:" << it->toString() << endl;
}
return 0;
}
```
### Enabling Authentication
If your Nacos server is secured with password, you can add the following snippet to any of the examples above to enable authentication:
```C++
using namespace nacos;
......
configProps[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1";
configProps[PropertyKeyConst::AUTH_USERNAME] = "username";
configProps[PropertyKeyConst::AUTH_PASSWORD] = "password";
NacosServiceFactory *factory = new NacosServiceFactory(configProps);
ConfigService *n = factory->CreateConfigService();
NamingService *namingSvc = factory->CreateNamingService();
......
```
### Enabling SPAS Authentication
```C++
using namespace nacos;
......
configProps[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1";
configProps[PropertyKeyConst::ACCESS_KEY] = "accessKey";
configProps[PropertyKeyConst::SECRET_KEY] = "secretKey";
NacosServiceFactory *factory = new NacosServiceFactory(configProps);
ConfigService *n = factory->CreateConfigService();
NamingService *namingSvc = factory->CreateNamingService();
......
```
# Supported System/Compilers
| OS/Environment | Compilers | Tested version |
| ---- | ---- | ---- |
|MacOS Darwin 19.6.0 x86_64|Clang|Apple clang version 12.0.0 (clang-1200.0.26.2)|
|Windows 10 WSL|GCC|version 4.8.4|
|Windows 10 CYGWIN_NT-10.0 x86_64|GCC|version 10.2.0 (GCC)|
|Ubuntu1~16.04.12|GCC|version 5.4.0|
|CentOS|GCC||
|Windows|Visual C++|To be done|
# About Nacos
Nacos (official site: [http://nacos.io](http://nacos.io)) is an easy-to-use platform designed for dynamic service discovery and configuration and service management. It helps you to build cloud native applications and microservices platform easily.
Service is a first-class citizen in Nacos. Nacos supports almost all type of services, for example: [Dubbo/gRPC service](https://nacos.io/en-us/docs/use-nacos-with-dubbo.html), [Spring Cloud RESTFul service](https://nacos.io/en-us/docs/use-nacos-with-springcloud.html) and [Kubernetes service](https://nacos.io/en-us/docs/use-nacos-with-kubernetes.html).
================================================
FILE: README_zh_CN.md
================================================
# Nacos-sdk-cpp
Nacos-sdk-cpp是nacos客戶端的C++版本，它支持服务发现和动态配置
[](https://gitter.im/alibaba/nacos?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge) [](https://www.apache.org/licenses/LICENSE-2.0.html)
# 快速开始
## 设置工程
下载工程源代码并且执行下述命令:
```
cd nacos-sdk-cpp
cmake .
make
```
将会产生一个libnacos-cli.so 和一个 nacos-cli.out
运行 `./nacos-cli.out` 以执行客户端的所有testcase
运行 `make install` 将libnacos-cli安装到lib目录
**注意:** 你需要在本机运行一个nacos server，监听8848端口以完成所有测试
其中有个测试将会测试端点（endpoint）功能，**所以你还需要**在本机运行一个http服务器，在路径/endpoints/endpoint0提供下述内容：
`127.0.0.1:8848`
**这些例子你都能在nacos-sdk-cpp/examples/找到**
## 将libnacos-cli集成到你的工程
下面的例子说明了如何将库文件(.so) 集成到你的工程:
IntegratingIntoYourProject.cpp:
```C++
#include
#include "Nacos.h"
using namespace std;
using namespace nacos;
int main() {
Properties props;
props[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1:8848";//Server address
NacosServiceFactory *factory = new NacosServiceFactory(props);
ResourceGuard _guardFactory(factory);
ConfigService *n = factory->CreateConfigService();
ResourceGuard _serviceFactory(n);
NacosString ss = "";
try {
ss = n->getConfig("k", NULLSTR, 1000);
}
catch (NacosException &e) {
cout <<
"Request failed with curl code:" << e.errorcode() << endl <<
"Reason:" << e.what() << endl;
return -1;
}
cout << ss << endl;
return 0;
}
```
`g++ -I/usr/local/include/nacos/ IntegratingIntoYourProject.cpp -lnacos-cli -o integrated.out`
在本机的8848端口启动一个nacos server, 并且运行 `./integrated.out`
你将会看到:
`SuccessfullyIntegrated`
## 如果你使用静态库(.a)链接
假设.a文件和待编译文件在同一目录, 请执行下述命令:
`g++ -I/usr/local/include/nacos/ IntegratingIntoYourProject.cpp -lcurl -lz -L. -lnacos-cli-static -o integrated.out`
使用-lcurl -lz指定nacos客户端使用的curl和lz库
使用-L. -lnacos-cli-static引用当前目录下的libnacos-cli-static.a
## 配置
### 获取配置
getConfig.cpp:
```C++
#include
#include "Nacos.h"
using namespace std;
using namespace nacos;
int main() {
Properties props;
props[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1:8848";//Server address
NacosServiceFactory *factory = new NacosServiceFactory(props);
ResourceGuard _guardFactory(factory);
ConfigService *n = factory->CreateConfigService();
ResourceGuard _serviceFactory(n);
NacosString ss = "";
try {
ss = n->getConfig("k", NULLSTR, 1000);
}
catch (NacosException &e) {
cout <<
"Request failed with curl code:" << e.errorcode() << endl <<
"Reason:" << e.what() << endl;
return -1;
}
cout << ss << endl;
return 0;
}
```
### 发布配置
setConfig.cpp:
```C++
#include
#include "Nacos.h"
using namespace std;
using namespace nacos;
int main() {
Properties props;
props[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1:8848";//server address
NacosServiceFactory *factory = new NacosServiceFactory(props);
ResourceGuard _guardFactory(factory);
ConfigService *n = factory->CreateConfigService();
ResourceGuard _serviceFactory(n);
bool bSucc = false;
NacosString ss = "";
try {
bSucc = n->publishConfig("Cfg_key", NULLSTR, "Cfg_val");
int retry = 0;
ss = n->getConfig("Cfg_key", NULLSTR, 1000);
while (!(ss == "Cfg_val") && retry++ < 10) {
ss = n->getConfig("Cfg_key", NULLSTR, 1000);
}
if (!(ss == "Cfg_val")) {
throw NacosException(0, "getConfig() failed.");
}
}
catch (NacosException &e) {
cout <<
"Request failed with curl code:" << e.errorcode() << endl <<
"Reason:" << e.what() << endl;
return -1;
}
cout << "Publishing Key:Cfg_key with value:Cfg_val result:" << bSucc << endl;
return 0;
}
```
### 监听配置变化和取消监听
listenToKeys.cpp:
```C++
#include
#include "Nacos.h"
using namespace std;
using namespace nacos;
class MyListener : public Listener {
private:
int num;
public:
MyListener(int num) {
this->num = num;
}
void receiveConfigInfo(const NacosString &configInfo) {
cout << "===================================" << endl;
cout << "Watcher" << num << endl;
cout << "Watched Key UPDATED:" << configInfo << endl;
cout << "===================================" << endl;
}
};
int main() {
Properties props;
props[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1:8848";
NacosServiceFactory *factory = new NacosServiceFactory(props);
ResourceGuard _guardFactory(factory);
ConfigService *n = factory->CreateConfigService();
ResourceGuard _serviceFactory(n);
MyListener *theListener = new MyListener(1);//You don't need to free it, since it will be deleted by the function removeListener
n->addListener("dqid", NULLSTR, theListener);//All changes on the key dqid will be received by MyListener
cout << "Input a character to continue" << endl;
getchar();
cout << "remove listener" << endl;
n->removeListener("dqid", NULLSTR, theListener);//Cancel listening
getchar();
return 0;
}
```
## 命名服务
### 注册和反注册实例
registerInstances.cpp:
```C++
#include
#include
#include "Nacos.h"
using namespace std;
using namespace nacos;
int main() {
Properties configProps;
configProps[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1";
NacosServiceFactory *factory = new NacosServiceFactory(configProps);
ResourceGuard _guardFactory(factory);
NamingService *namingSvc = factory->CreateNamingService();
ResourceGuard _serviceFactory(namingSvc);
Instance instance;
instance.clusterName = "DefaultCluster";
instance.ip = "127.0.0.1";
instance.port = 2333;
instance.instanceId = "1";
instance.ephemeral = true;
//Registers 5 services named TestNamingService1...5
try {
for (int i = 0; i < 5; i++) {
NacosString serviceName = "TestNamingService" + NacosStringOps::valueOf(i);
instance.port = 2000 + i;
namingSvc->registerInstance(serviceName, instance);
}
}
catch (NacosException &e) {
cout << "encounter exception while registering service instance, raison:" << e.what() << endl;
return -1;
}
sleep(30);
try {
for (int i = 0; i < 5; i++) {
NacosString serviceName = "TestNamingService" + NacosStringOps::valueOf(i);
namingSvc->deregisterInstance(serviceName, "127.0.0.1", 2000 + i);
sleep(1);
}
}
catch (NacosException &e) {
cout << "encounter exception while registering service instance, raison:" << e.what() << endl;
return -1;
}
sleep(30);
return 0;
}
```
### 订阅和取消订阅服务
subscribeServices.cpp:
```C++
#include
#include "Nacos.h"
using namespace std;
using namespace nacos;
class MyServiceListener : public EventListener {
private:
int num;
public:
MyServiceListener(int num) {
this->num = num;
}
void receiveNamingInfo(const ServiceInfo &serviceInfo){
cout << "===================================" << endl;
cout << "Watcher: " << num << endl;
cout << "Watched service UPDATED: " << serviceInfo.toInstanceString() << endl;
cout << "===================================" << endl;
}
};
int main() {
Properties props;
props[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1:8848";
//Interval for poller to check the status of subscribed services(unit:Ms), 30000 by default
//Here we set it to 5000 to see the output more quick
props[PropertyKeyConst::SUBSCRIPTION_POLL_INTERVAL] = "5000";
NacosServiceFactory *factory = new NacosServiceFactory(props);
ResourceGuard _guardFactory(factory);
NamingService *n = factory->CreateNamingService();
ResourceGuard _serviceFactory(n);
n->subscribe("ss", new MyServiceListener(1));
cout << "Press any key to register services" << endl;
getchar();
n->registerInstance("ss", "127.0.0.1", 33);
n->registerInstance("ss", "127.0.0.1", 34);
cout << "Press any key to deregister services" << endl;
getchar();
n->deregisterInstance("ss", "127.0.0.1", 33);
n->deregisterInstance("ss", "127.0.0.1", 34);
cout << "All instances Unregistered, press any key to finish testing" << endl;
getchar();
return 0;
}
```
### 获取某个服务的全部实例
getAllInstances.cpp:
```C++
#include
#include
#include "Nacos.h"
using namespace std;
using namespace nacos;
int main() {
Properties configProps;
configProps[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1";
NacosServiceFactory *factory = new NacosServiceFactory(configProps);
ResourceGuard _guardFactory(factory);
NamingService *namingSvc = factory->CreateNamingService();
ResourceGuard _guardService(namingSvc);
list instances = namingSvc->getAllInstances("TestNamingService1");
cout << "getAllInstances from server:" << endl;
for (list::iterator it = instances.begin();
it != instances.end(); it++) {
cout << "Instance:" << it->toString() << endl;
}
return 0;
}
```
### 启用认证
如果你的服务器启设置了密码，在上述任意一个例子当中加入下述配置，即可启用用户名密码认证：
```C++
using namespace nacos;
......
configProps[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1";
configProps[PropertyKeyConst::AUTH_USERNAME] = "username";
configProps[PropertyKeyConst::AUTH_PASSWORD] = "password";
NacosServiceFactory *factory = new NacosServiceFactory(configProps);
ConfigService *n = factory->CreateConfigService();
NamingService *namingSvc = factory->CreateNamingService();
......
```
### 启动SPAS鉴权
```C++
using namespace nacos;
......
configProps[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1";
configProps[PropertyKeyConst::ACCESS_KEY] = "accessKey";
configProps[PropertyKeyConst::SECRET_KEY] = "secretKey";
NacosServiceFactory *factory = new NacosServiceFactory(configProps);
ConfigService *n = factory->CreateConfigService();
NamingService *namingSvc = factory->CreateNamingService();
......
```
# 支持的系统/编译器
| 操作系统/环境 | 编译器 | 测试版本 |
| ---- | ---- | ---- |
|MacOS Darwin 19.6.0 x86_64|Clang|Apple clang version 12.0.0 (clang-1200.0.26.2)|
|Windows 10 WSL|GCC|version 4.8.4|
|Windows 10 CYGWIN_NT-10.0 x86_64|GCC|version 10.2.0 (GCC)|
|Ubuntu1~16.04.12|GCC|version 5.4.0|
|CentOS|GCC||
|Windows|Visual C++|计划中|
# 关于Nacos
Nacos (官方网站: [http://nacos.io](http://nacos.io)) 是一个易用的动态服务发现、配置管理以及服务管理平台。它将助力您轻松建立云上原生应用和微服务。
在Nacos中，服务是一级公民. Nacos 支持几乎所有种类的服务，例如：
[Dubbo/gRPC service](https://nacos.io/en-us/docs/use-nacos-with-dubbo.html)
[Spring Cloud RESTFul service](https://nacos.io/en-us/docs/use-nacos-with-springcloud.html)
[Kubernetes service](https://nacos.io/en-us/docs/use-nacos-with-kubernetes.html).
================================================
FILE: examples/IntegratingIntoYourProject.cpp
================================================
#include
#include "Nacos.h"
using namespace std;
using namespace nacos;
int main() {
Properties props;
props[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1:8848";//Server address
INacosServiceFactory *factory = NacosFactoryFactory::getNacosFactory(props);
ResourceGuard _guardFactory(factory);
ConfigService *n = factory->CreateConfigService();
ResourceGuard _serviceFactory(n);
NacosString ss = "";
try {
ss = n->getConfig("k", NULLSTR, 1000);
}
catch (NacosException &e) {
cout <<
"Request failed with curl code:" << e.errorcode() << endl <<
"Reason:" << e.what() << endl;
return -1;
}
cout << ss << endl;
return 0;
}
================================================
FILE: examples/generate_examples.sh
================================================
#!/bin/bash
g++ -I/usr/local/include/nacos/ IntegratingIntoYourProject.cpp -lnacos-cli -o IntegratingIntoYourProject.out
g++ -I/usr/local/include/nacos/ getAllInstances.cpp -lnacos-cli -o getAllInstances.out
g++ -I/usr/local/include/nacos/ getConfig.cpp -lnacos-cli -o getConfig.out
g++ -I/usr/local/include/nacos/ listenToKeys.cpp -lnacos-cli -o listenToKeys.out
g++ -I/usr/local/include/nacos/ registerInstances.cpp -lnacos-cli -o registerInstances.out
g++ -I/usr/local/include/nacos/ setConfig.cpp -lnacos-cli -o setConfig.out
g++ -I/usr/local/include/nacos/ subscribeServices.cpp -lnacos-cli -o subscribeServices.out
================================================
FILE: examples/getAllInstances.cpp
================================================
#include
#include
#include "Nacos.h"
using namespace std;
using namespace nacos;
int main() {
Properties configProps;
configProps[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1";
INacosServiceFactory *factory = NacosFactoryFactory::getNacosFactory(configProps);
ResourceGuard _guardFactory(factory);
NamingService *namingSvc = factory->CreateNamingService();
ResourceGuard _guardService(namingSvc);
list instances = namingSvc->getAllInstances("TestNamingService1");
cout << "getAllInstances from server:" << endl;
for (list::iterator it = instances.begin();
it != instances.end(); it++) {
cout << "Instance:" << it->toString() << endl;
}
return 0;
}
================================================
FILE: examples/getConfig.cpp
================================================
#include
#include "Nacos.h"
using namespace std;
using namespace nacos;
int main() {
Properties props;
props[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1:8848";//Server address
INacosServiceFactory *factory = NacosFactoryFactory::getNacosFactory(props);
ResourceGuard _guardFactory(factory);
ConfigService *n = factory->CreateConfigService();
ResourceGuard _serviceFactory(n);
NacosString ss = "";
try {
ss = n->getConfig("k", NULLSTR, 1000);
}
catch (NacosException &e) {
cout <<
"Request failed with curl code:" << e.errorcode() << endl <<
"Reason:" << e.what() << endl;
return -1;
}
cout << ss << endl;
return 0;
}
================================================
FILE: examples/listenToKeys.cpp
================================================
#include
#include "Nacos.h"
#include
using namespace std;
using namespace nacos;
class MyListener : public Listener {
private:
int num;
public:
MyListener(int num) {
this->num = num;
}
void receiveConfigInfo(const NacosString &configInfo) {
cout << "===================================" << endl;
cout << "Watcher" << num << endl;
cout << "Watched Key UPDATED:" << configInfo << endl;
cout << "===================================" << endl;
}
};
int main() {
Properties props;
props[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1:8848";
INacosServiceFactory *factory = NacosFactoryFactory::getNacosFactory(props);
ResourceGuard _guardFactory(factory);
ConfigService *n = factory->CreateConfigService();
ResourceGuard _serviceFactory(n);
MyListener *theListener = new MyListener(1);//You don't need to free it, since it will be deleted by the function removeListener
n->addListener("dqid", NULLSTR, theListener);//All changes on the key dqid will be received by MyListener
cout << "Input a character to continue" << endl;
getchar();
cout << "remove listener" << endl;
n->removeListener("dqid", NULLSTR, theListener);//Cancel listening
getchar();
return 0;
}
================================================
FILE: examples/registerInstances.cpp
================================================
#include
#include
#include "Nacos.h"
using namespace std;
using namespace nacos;
int main() {
Properties configProps;
configProps[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1";
INacosServiceFactory *factory = NacosFactoryFactory::getNacosFactory(configProps);
ResourceGuard _guardFactory(factory);
NamingService *namingSvc = factory->CreateNamingService();
ResourceGuard _serviceFactory(namingSvc);
Instance instance;
instance.clusterName = "DefaultCluster";
instance.ip = "127.0.0.1";
instance.port = 2333;
instance.instanceId = "1";
instance.ephemeral = true;
//Registers 5 services named TestNamingService1...5
try {
for (int i = 0; i < 5; i++) {
NacosString serviceName = "TestNamingService" + NacosStringOps::valueOf(i);
instance.port = 2000 + i;
namingSvc->registerInstance(serviceName, instance);
}
}
catch (NacosException &e) {
cout << "encounter exception while registering service instance, raison:" << e.what() << endl;
return -1;
}
sleep(30);
try {
for (int i = 0; i < 5; i++) {
NacosString serviceName = "TestNamingService" + NacosStringOps::valueOf(i);
namingSvc->deregisterInstance(serviceName, "127.0.0.1", 2000 + i);
sleep(1);
}
}
catch (NacosException &e) {
cout << "encounter exception while registering service instance, raison:" << e.what() << endl;
return -1;
}
sleep(30);
return 0;
}
================================================
FILE: examples/setConfig.cpp
================================================
#include
#include "Nacos.h"
using namespace std;
using namespace nacos;
int main() {
Properties props;
props[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1:8848";//server address
INacosServiceFactory *factory = NacosFactoryFactory::getNacosFactory(props);
ResourceGuard _guardFactory(factory);
ConfigService *n = factory->CreateConfigService();
ResourceGuard _serviceFactory(n);
bool bSucc = false;
NacosString ss = "";
try {
bSucc = n->publishConfig("Cfg_key", NULLSTR, "Cfg_val");
int retry = 0;
ss = n->getConfig("Cfg_key", NULLSTR, 1000);
while (!(ss == "Cfg_val") && retry++ < 10) {
ss = n->getConfig("Cfg_key", NULLSTR, 1000);
}
if (!(ss == "Cfg_val")) {
throw NacosException(0, "getConfig() failed.");
}
}
catch (NacosException &e) {
cout <<
"Request failed with curl code:" << e.errorcode() << endl <<
"Reason:" << e.what() << endl;
return -1;
}
cout << "Publishing Key:Cfg_key with value:Cfg_val result:" << bSucc << endl;
return 0;
}
================================================
FILE: examples/subscribeServices.cpp
================================================
#include
#include "Nacos.h"
#include
using namespace std;
using namespace nacos;
class MyServiceListener : public EventListener {
private:
int num;
public:
MyServiceListener(int num) {
this->num = num;
}
void receiveNamingInfo(const ServiceInfo &serviceInfo){
cout << "===================================" << endl;
cout << "Watcher: " << num << endl;
cout << "Watched service UPDATED: " << serviceInfo.toInstanceString() << endl;
cout << "===================================" << endl;
}
};
int main() {
Properties props;
props[PropertyKeyConst::SERVER_ADDR] = "127.0.0.1:8848";
//Interval for poller to check the status of subscribed services(unit:Ms), 30000 by default
//Here we set it to 5000 to see the output more quick
props[PropertyKeyConst::SUBSCRIPTION_POLL_INTERVAL] = "5000";
INacosServiceFactory *factory = NacosFactoryFactory::getNacosFactory(props);
ResourceGuard _guardFactory(factory);
NamingService *n = factory->CreateNamingService();
ResourceGuard _serviceFactory(n);
n->subscribe("ss", new MyServiceListener(1));
cout << "Press any key to register services" << endl;
getchar();
n->registerInstance("ss", "127.0.0.1", 33);
n->registerInstance("ss", "127.0.0.1", 34);
cout << "Press any key to deregister services" << endl;
getchar();
n->deregisterInstance("ss", "127.0.0.1", 33);
n->deregisterInstance("ss", "127.0.0.1", 34);
cout << "All instances Unregistered, press any key to finish testing" << endl;
getchar();
return 0;
}
================================================
FILE: include/Compatibility.h
================================================
//
// Created by liuhanyu on 2021/4/7.
// Compatibility header
#ifndef NACOS_SDK_CPP_COMPATIBILITY_H
#define NACOS_SDK_CPP_COMPATIBILITY_H
#if __cplusplus >= 201402L
//C++ 17 compatibility
#define NACOS_THROW(...)
#define NACOS_NOTHROW() noexcept
#else
#define NACOS_THROW throw
#define NACOS_NOTHROW throw
#endif
#endif //NACOS_SDK_CPP_COMPATIBILITY_H
================================================
FILE: include/Nacos.h
================================================
/*
* Copyright 1999-2020 Alibaba Group Holding Ltd.
*
* Licensed 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.
*/
#ifndef _NACOS_H_
#define _NACOS_H_
#include "factory/INacosServiceFactory.h"
#include "factory/NacosFactoryFactory.h"
#include "constant/PropertyKeyConst.h"
#include "ResourceGuard.h"
#endif
================================================
FILE: include/NacosExceptions.h
================================================
#ifndef __NACOS_EXCEPTIONS_H_
#define __NACOS_EXCEPTIONS_H_
#include
#include "NacosString.h"
#include "Compatibility.h"
namespace nacos{
class NacosException : public std::exception {
protected:
int _errcode;
NacosString _errmsg;
public:
NacosException(int errorcode, const char *errormsg) NACOS_NOTHROW();
NacosException(int errorcode, const NacosString &errormsg) NACOS_NOTHROW();
~NacosException() NACOS_NOTHROW() {};
const char *what() const NACOS_NOTHROW() { return _errmsg.c_str(); };
const int errorcode() const NACOS_NOTHROW() { return _errcode; };
static const int CLIENT_INVALID_PARAM = -400;
/**
* over client threshold（超过server端的限流阈值）
*/
static const int CLIENT_OVER_THRESHOLD = -503;
/**
* server error code
* 400 403 throw exception to user
* 500 502 503 change ip and retry
*/
/**
* invalid param（参数错误）
*/
static const int INVALID_PARAM = 400;
/**
* no right（鉴权失败）
*/
static const int NO_RIGHT = 403;
static const int HTTP_NOT_FOUND = 404;
/**
* conflict（写并发冲突）
*/
static const int CONFLICT = 409;
/**
* server error（server异常，如超时）
*/
static const int SERVER_ERROR = 500;
/**
* bad gateway（路由异常，如nginx后面的Server挂掉）
*/
static const int BAD_GATEWAY = 502;
/**
* over threshold（超过server端的限流阈值）
*/
static const int OVER_THRESHOLD = 503;
/**
* Error while parsing the JSON string
*/
static const int INVALID_JSON_FORMAT = 100001;
/**
* One or more JSON field is missing
*/
static const int LACK_JSON_FIELD = 100002;
static const int MALFORMED_CONFIG_FILE = 1001;
static const int FILE_NOT_FOUND = 1002;
static const int INVALID_FACTORY_CONFIG = 1003;
static const int ALL_SERVERS_TRIED_AND_FAILED = 1004;
static const int NO_SERVER_AVAILABLE = 1005;
static const int INVALID_LOGIN_CREDENTIAL = 1006;
static const int UNABLE_TO_OPEN_FILE = 1007;
static const int UNABLE_TO_GET_HOST_IP = 1008;
static const int UNABLE_TO_CREATE_SOCKET = 1009;
static const int INVALID_CONFIG_PARAM = 1010;
static const int UNABLE_TO_GET_HOST_NAME = 1011;
};
class NetworkException : public std::exception {
private:
int _curlerrcode;
NacosString _errmsg;
public:
NetworkException(int errorcode, const char *errormsg) NACOS_NOTHROW(): _curlerrcode(errorcode), _errmsg(errormsg) {};
NetworkException(int errorcode, const NacosString &errormsg) NACOS_NOTHROW(): _curlerrcode(errorcode), _errmsg(errormsg) {};
~NetworkException() NACOS_NOTHROW() {};
const char *what() const NACOS_NOTHROW() { return _errmsg.c_str(); };
const int errorcode() const NACOS_NOTHROW() { return _curlerrcode; };
};
class IOException : public NacosException {
public:
IOException(int errorcode, const char *errormsg) NACOS_NOTHROW() : NacosException(errorcode, errormsg) {};
IOException(int errorcode, const NacosString &errormsg) NACOS_NOTHROW() : NacosException(errorcode, errormsg) {};
~IOException() NACOS_NOTHROW() {};
};
class MalformedConfigException : public NacosException {
public:
MalformedConfigException(const NacosString &file, const NacosString &detailedMsg) : NacosException(NacosException::MALFORMED_CONFIG_FILE,
"Malformed Config file:" + file + " reason:" + detailedMsg) {};
};
class InvalidFactoryConfigException : public NacosException {
public:
InvalidFactoryConfigException() : NacosException(NacosException::INVALID_FACTORY_CONFIG,
"Either config file or property should be configed.") {};
};
}//namespace nacos
#endif
================================================
FILE: include/NacosString.h
================================================
#ifndef __NACOS_STRING_H_
#define __NACOS_STRING_H_
#include
#include
#define NacosString std::string
#define NULLSTR NacosStringOps::nullstr
#define isNull NacosStringOps::isNullStr
namespace nacos{
class NacosStringOps {
public:
static const NacosString nullstr;
static bool isNullStr(const NacosString &str);
template
static NacosString valueOf(T val);
static const NacosString STR_TRUE;
static const NacosString STR_FALSE;
};
template
NacosString NacosStringOps::valueOf(T val) {
std::ostringstream os;
if (os << val) {
return NacosString(os.str().c_str());
}
return NULLSTR;
}
template<>
NacosString NacosStringOps::valueOf(bool val);
}//namespace nacos
#endif
================================================
FILE: include/Properties.h
================================================
#ifndef __PROPERTIES_H_
#define __PROPERTIES_H_
#include