由Swoole驱动的Grpc协程客户端, 底层使用高性能协程Http2-Client客户端
- 同步代码几乎无改动
- 自动协程调度获得异步高性能
- 提供Grpc代码生成器Plus版, 0成本迁移
- 基于Channel实现的消息生产消费
- 一个客户端连接即可同时hold住上万个请求响应
- 支持跨协程并发, 多类型Client分享同一连接
- Etcd的直接支持
- 使用Http2协议全双工通信+Protobuf极限压缩, 告别同步阻塞与Json打包的低性能
- PHP7及以上
- Swoole: v4.4.0及以上, StreamingCall支持需要v4.5.3及以上
- Protobuf
- grpc_php_plugin
- 请不要启用grpc的php扩展, 也无需grpc的php库
仓库已提供Etcd的生成代码, 如要自己根据proto文件生成代码, 请使用tools目录下的生成工具generator, 使用方法和protoc命令完全一样, 增强了支持以目录作为参数, 自动查找目录下的proto文件生成, 如: 该目录下已提供的grpc生成代码脚本:
# it's generate_grpc.sh
./generator \
--proto_path=./../src/Grpc/Proto \
--php_out=./../src/Grpc \
--grpc_out=./../src/Grpc \
--plugin=protoc-gen-grpc=$1 \
./../src/Grpc/Proto只需要将proto文件放在Grpc/Proto下, 运行./generate_grpc.sh ../../grpc/bins/opt/grpc_php_plugin (参数是你的grpc php插件位置, 一般在grpc/bins/opt目录中), 即可生成相关代码
以下示例都可在
examples目录下找到并直接运行
经典的Grpc官方示例, 代码更加简洁
$greeterClient = new GreeterClient('127.0.0.1:50051');
$request = new HelloRequest();
$request->setName('Swoole');
list($reply, $status) = $greeterClient->SayHello($request);
$message = $reply->getMessage();
echo "{$message}\n"; // Output: Hello SwooleEtcd的几个基本操作的使用
use Swoole\Coroutine;
Coroutine::create(function () {
$kvClient = new Etcdserverpb\KVClient(GRPC_SERVER_DEFAULT_URI);
$request = new Etcdserverpb\PutRequest();
$request->setPrevKv(true);
$request->setKey('Hello');
$request->setValue('Swoole');
[$reply, $status] = $kvClient->Put($request);
if ($status === 0) {
echo "{$reply->getPrevKv()->getKey()}\n";
echo "{$reply->getPrevKv()->getValue()}\n";
} else {
echo "Error#{$status}: {$reply}\n";
}
$kvClient->close();
});创建一个协程负责Watch, 创建两个协程定时写入/删除键值以便观察效果
use Etcdserverpb\WatchCreateRequest;
use Etcdserverpb\WatchCreateRequest\FilterType;
use Etcdserverpb\WatchRequest;
use Swoole\Coroutine;
// The Watcher
Coroutine::create(function () {
$watchClient = new Etcdserverpb\WatchClient(GRPC_SERVER_DEFAULT_URI);
$watchCall = $watchClient->Watch();
$request = new WatchRequest();
$createRequest = new WatchCreateRequest();
$createRequest->setKey('Hello');
$request->setCreateRequest($createRequest);
_retry:
$watchCall->push($request);
/**@var $reply Etcdserverpb\WatchResponse */
while (true) {
[$reply, $status] = $watchCall->recv();
if ($status === 0) { // success
if ($reply->getCreated() || $reply->getCanceled()) {
continue;
}
foreach ($reply->getEvents() as $event) {
/**@var $event Mvccpb\Event */
$type = $event->getType();
$kv = $event->getKv();
if (FilterType::NOPUT === $type) {
echo "Put key {$kv->getKey()} => {$kv->getValue()}\n";
break;
} elseif (FilterType::NODELETE === $type) {
echo "Delete key {$kv->getKey()}\n";
break;
}
}
} else { // failed
static $retry_time = 0;
if ($watchClient->isConnected()) {
$retry_time++;
echo "Retry#{$retry_time}\n";
goto _retry;
} else {
echo "Error#{$status}: {$reply}\n";
break;
}
}
}
$watchClient->close();
});
// The Writer Put and Delete
Coroutine::create(function () {
$kvClient = new Etcdserverpb\KVClient(GRPC_SERVER_DEFAULT_URI);
Coroutine::create(function () use ($kvClient) {
$request = new Etcdserverpb\PutRequest();
$request->setKey('Hello');
$request->setPrevKv(true);
while (true) {
static $count = 0;
Coroutine::sleep(.5);
$request->setValue('Swoole#' . (++$count));
[$reply, $status] = $kvClient->Put($request);
if ($status !== 0) {
echo "Error#{$status}: {$reply}\n";
break;
}
}
$kvClient->close();
});
Coroutine::create(function () use ($kvClient) {
$request = new Etcdserverpb\DeleteRangeRequest();
$request->setKey('Hello');
$request->setPrevKv(true);
while (true) {
Coroutine::sleep(1);
[$reply, $status] = $kvClient->DeleteRange($request);
if ($status !== 0) {
echo "Error#{$status}: {$reply}\n";
break;
}
}
$kvClient->close();
});
});用户添加/展示/删除以及展示了如何让不同类型的EtcdClient能够使用同一个Grpc\Client创建的连接
use Swoole\Coroutine;
Coroutine::create(function () {
$grpcClient = new Grpc\Client(GRPC_SERVER_DEFAULT_URI);
// use in different type clients
Coroutine::create(function () use ($grpcClient) {
$kvClient = new Etcdserverpb\KVClient(GRPC_SERVER_DEFAULT_URI, ['use' => $grpcClient]);
$request = new Etcdserverpb\PutRequest();
$request->setPrevKv(true);
$request->setKey('Hello');
$request->setValue('Swoole');
[$reply, $status] = $kvClient->Put($request);
if ($status === 0) {
echo "\n=== PUT KV OK ===\n";
} else {
echo "Error#{$status}: {$reply}\n";
}
});
Coroutine::create(function () use ($grpcClient) {
$authClient = new Etcdserverpb\AuthClient(GRPC_SERVER_DEFAULT_URI, ['use' => $grpcClient]);
$userRequest = new Etcdserverpb\AuthUserAddRequest();
$userNames = ['ranCoroutine::create', 'twosee', 'gxh', 'stone', 'sjl'];
foreach ($userNames as $username) {
$userRequest->setName($username);
[$reply, $status] = $authClient->UserAdd($userRequest);
if ($status !== 0) {
goto _error;
}
}
$useListRequest = new Etcdserverpb\AuthUserListRequest();
[$reply, $status] = $authClient->UserList($useListRequest);
if ($status !== 0) {
goto _error;
}
echo "\n=== SHOW USER LIST ===\n";
foreach ($reply->getUsers() as $user) {
/**@var \Authpb\User */
echo "* {$user}\n";
}
echo "=== SHOW USER LIST OK ===\n";
$userRequest = new Etcdserverpb\AuthUserDeleteRequest();
foreach ($userNames as $username) {
$userRequest->setName($username);
[$reply, $status] = $authClient->UserDelete($userRequest);
if ($status !== 0) {
goto _error;
}
}
if (false) {
_error:
echo "Error#{$status}: {$reply}\n";
}
echo "\n=== SHOW ALL CLIENT STATS ===\n";
var_dump(grpc_client_num_stats());
$grpcClient->close();
});
});
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