getAttributes().get(TRANS_KEY_REMOTE_IP))
.withValue(CONTEXT_KEY_CONN_REMOTE_PORT,
call.getAttributes().get(TRANS_KEY_REMOTE_PORT))
.withValue(CONTEXT_KEY_CONN_LOCAL_PORT, call.getAttributes().get(TRANS_KEY_LOCAL_PORT));
if (REQUEST_BI_STREAM_SERVICE_NAME.equals(call.getMethodDescriptor().getServiceName())) {
Channel internalChannel = getInternalChannel(call);
// 保存channel
ctx = ctx.withValue(CONTEXT_KEY_CHANNEL, internalChannel);
}
return Contexts.interceptCall(ctx, call, headers, next);
}
};
// 添加转发组件
addServices(handlerRegistry, serverInterceptor);
// 创建Server
server = ServerBuilder.forPort(getServicePort()).executor(getRpcExecutor())
.maxInboundMessageSize(getInboundMessageSize()).fallbackHandlerRegistry(handlerRegistry)
.compressorRegistry(CompressorRegistry.getDefaultInstance())
.decompressorRegistry(DecompressorRegistry.getDefaultInstance())
.addTransportFilter(new ServerTransportFilter() {
@Override
public Attributes transportReady(Attributes transportAttrs) {
// 在连接建立时获取ip、port等信息，生成connectionId
InetSocketAddress remoteAddress = (InetSocketAddress) transportAttrs
.get(Grpc.TRANSPORT_ATTR_REMOTE_ADDR);
InetSocketAddress localAddress = (InetSocketAddress) transportAttrs
.get(Grpc.TRANSPORT_ATTR_LOCAL_ADDR);
int remotePort = remoteAddress.getPort();
int localPort = localAddress.getPort();
String remoteIp = remoteAddress.getAddress().getHostAddress();
Attributes attrWrapper = transportAttrs.toBuilder()
.set(TRANS_KEY_CONN_ID,
System.currentTimeMillis() + "_" + remoteIp + "_" + remotePort)
.set(TRANS_KEY_REMOTE_IP, remoteIp).set(TRANS_KEY_REMOTE_PORT, remotePort)
.set(TRANS_KEY_LOCAL_PORT, localPort).build();
return attrWrapper;
}
@Override
public void transportTerminated(Attributes transportAttrs) {
String connectionId = null;
try {
connectionId = transportAttrs.get(TRANS_KEY_CONN_ID);
} catch (Exception e) {
// Ignore
}
if (StringUtils.isNotBlank(connectionId)) {
// 连接断开时，从connectionManager移除
connectionManager.unregister(connectionId);
}
}
}).build();
server.start();
}
GrpcBiStreamRequestAcceptor
grpc bi stream request handler.
主要功能就是封装服务端Connection对象：
if (parseObj instanceof ConnectionSetupRequest) {
ConnectionSetupRequest setUpRequest = (ConnectionSetupRequest) parseObj;
Map<String, String> labels = setUpRequest.getLabels();
String appName = "-";
if (labels != null && labels.containsKey(Constants.APPNAME)) {
appName = labels.get(Constants.APPNAME);
}
ConnectionMeta metaInfo = new ConnectionMeta(connectionId, payload.getMetadata().getClientIp(),
remoteIp, remotePort, localPort, ConnectionType.GRPC.getType(),
setUpRequest.getClientVersion(), appName, setUpRequest.getLabels());
metaInfo.setTenant(setUpRequest.getTenant());
// 封装连接基础信息和responseObserver、channel
// 使用responseObserver向客户端推送消息
Connection connection = new GrpcConnection(metaInfo, responseObserver, CONTEXT_KEY_CHANNEL.get());
connection.setAbilities(setUpRequest.getAbilities());
boolean rejectSdkOnStarting = metaInfo.isSdkSource() && !ApplicationUtils.isStarted();
// 注册到connectionManager
if (rejectSdkOnStarting || !connectionManager.register(connection