THRIFT-928. cpp: Thrift Server Client Stats
Add the ability for Thrift servers to monitor client connections. It is
activated by #including server/TClientInfo.h and creating 1) a
TClientInfoCallHandler passed to the processor with setEventHandler()
and 2) a TClientInforServerHandler passed to the server with
setServerEventHandler().
The result vector, showing active connections, provides client address
and the thrift call it is executing (or last executed), the time
connected, and the number of calls made since connection.
git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@1005139 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/contrib/fb303/TClientInfo.cpp b/contrib/fb303/TClientInfo.cpp
new file mode 100644
index 0000000..d093017
--- /dev/null
+++ b/contrib/fb303/TClientInfo.cpp
@@ -0,0 +1,179 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.
+ */
+
+#include <server/TClientInfo.h>
+
+namespace apache { namespace thrift { namespace server {
+
+using namespace apache::thrift;
+using namespace apache::thrift::transport;
+
+TClientInfoConnection::TClientInfoConnection() {
+ call_[kNameLen - 1] = '\0'; // insure NUL terminator is there
+ eraseAddr();
+ eraseCall();
+}
+
+void TClientInfoConnection::recordAddr(const sockaddr* addr) {
+ eraseAddr();
+ initTime();
+ ncalls_ = 0;
+ if (addr != NULL) {
+ if (addr->sa_family == AF_INET) {
+ memcpy((void*)&addr_.ipv4, (const void *)addr, sizeof(sockaddr_in));
+ }
+ else if (addr->sa_family == AF_INET6) {
+ memcpy((void*)&addr_.ipv6, (const void *)addr, sizeof(sockaddr_in6));
+ }
+ }
+}
+
+void TClientInfoConnection::eraseAddr() {
+ addr_.ipv4.sin_family = AF_UNSPEC;
+}
+
+const char* TClientInfoConnection::getAddr(char* buf, int len) const {
+ switch (addr_.ipv4.sin_family) {
+ case AF_INET:
+ return inet_ntop(AF_INET, &addr_.ipv4.sin_addr, buf, len);
+ case AF_INET6:
+ return inet_ntop(AF_INET6, &addr_.ipv6.sin6_addr, buf, len);
+ default:
+ return NULL;
+ }
+}
+
+void TClientInfoConnection::recordCall(const char* name) {
+ strncpy(call_, name, kNameLen - 1); // NUL terminator set in constructor
+ ncalls_++;
+}
+
+void TClientInfoConnection::eraseCall() {
+ call_[0] = '\0';
+}
+
+const char* TClientInfoConnection::getCall() const {
+ if (call_[0] == '\0') {
+ return NULL;
+ }
+ return call_;
+}
+
+void TClientInfoConnection::getTime(timespec* time) const {
+ *time = time_;
+}
+
+uint64_t TClientInfoConnection::getNCalls() const {
+ return ncalls_;
+}
+
+void TClientInfoConnection::initTime() {
+ clock_gettime(CLOCK_REALTIME, &time_);
+}
+
+
+TClientInfoConnection* TClientInfo::getConnection(int fd, bool grow) {
+ if (fd < 0 || (!grow && fd >= info_.size())) {
+ return NULL;
+ }
+ return &info_[fd];
+}
+
+size_t TClientInfo::size() const {
+ return info_.size();
+}
+
+void* TClientInfoServerHandler::createContext(boost::shared_ptr<TProtocol> input,
+ boost::shared_ptr<TProtocol> output) {
+ (void)input;
+ (void)output;
+ return (void*) new Connect(&clientInfo_);
+}
+
+void TClientInfoServerHandler::deleteContext(void* connectionContext,
+ boost::shared_ptr<TProtocol> input,
+ boost::shared_ptr<TProtocol> output) {
+ Connect* call = static_cast<Connect*>(connectionContext);
+ if (call->callInfo_) {
+ call->callInfo_->eraseCall();
+ }
+ delete call;
+}
+
+void TClientInfoServerHandler::processContext(void* connectionContext,
+ shared_ptr<TTransport> transport) {
+ Connect* call = static_cast<Connect*>(connectionContext);
+ if (call->callInfo_ == NULL) {
+ if (typeid(*(transport.get())) == typeid(TSocket)) {
+ TSocket* tsocket = static_cast<TSocket*>(transport.get());
+ int fd = tsocket->getSocketFD();
+ if (fd < 0) {
+ return;
+ }
+ call->callInfo_ = call->clientInfo_->getConnection(fd, true);
+ assert(call->callInfo_ != NULL);
+ socklen_t len;
+ call->callInfo_->recordAddr(tsocket->getCachedAddress(&len));
+ }
+ }
+}
+
+void TClientInfoServerHandler::getStatsStrings(vector<string>& result) {
+ result.clear();
+ timespec now;
+ clock_gettime(CLOCK_REALTIME, &now);
+
+ for (int i = 0; i < clientInfo_.size(); ++i) {
+ TClientInfoConnection* info = clientInfo_.getConnection(i, false);
+ const char* callStr = info->getCall();
+ if (callStr == NULL) {
+ continue;
+ }
+
+ char addrBuf[INET6_ADDRSTRLEN];
+ const char* addrStr = info->getAddr(addrBuf, sizeof addrBuf);
+ if (addrStr == NULL) {
+ // cerr << "no addr!" << endl;
+ continue;
+ }
+
+ timespec start;
+ double secs = 0.0;
+ info->getTime(&start);
+ secs = (double)(now.tv_sec - start.tv_sec) + (now.tv_nsec - start.tv_nsec)*0.000000001;
+
+ char buf[256];
+ snprintf(buf, sizeof buf, "%d %s %s %.3f %llu", i, addrStr, callStr, secs,
+ (unsigned long long)info->getNCalls());
+
+ result.push_back(buf);
+ }
+}
+
+void* TClientInfoCallHandler::getContext(const char* fn_name, void* serverContext) {
+ if (serverContext) {
+ TClientInfoConnection* callInfo = static_cast<TClientInfoServerHandler::Connect*>(serverContext)->callInfo_;
+ if (callInfo != NULL) {
+ callInfo->recordCall(fn_name);
+ }
+ }
+ return NULL;
+}
+
+} } } // namespace apache::thrift::server