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+/*
+ * 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.
+ */
+
+/* $Rev$ $Date$ */
+
+#ifndef tuscany_scribe_hpp
+#define tuscany_scribe_hpp
+
+/**
+ * Scribe logging functions.
+ */
+
+// Work around redundant defines in Scribe headers
+#undef PACKAGE
+#undef PACKAGE_BUGREPORT
+#undef PACKAGE_NAME
+#undef PACKAGE_STRING
+#undef PACKAGE_TARNAME
+#undef PACKAGE_VERSION
+#undef VERSION
+
+// Ignore integer conversion issues in Thrift and Scribe headers
+#ifdef WANT_MAINTAINER_MODE
+#pragma GCC diagnostic ignored "-Wconversion"
+#endif
+
+#include <protocol/TBinaryProtocol.h>
+#include <transport/TSocket.h>
+#include <transport/TTransportUtils.h>
+
+#include "gen-cpp/scribe.h"
+
+#ifdef WANT_MAINTAINER_MODE
+#pragma GCC diagnostic warning "-Wconversion"
+#endif
+
+#include "string.hpp"
+#include "list.hpp"
+#include "value.hpp"
+#include "monad.hpp"
+#include "../../modules/scheme/eval.hpp"
+
+namespace tuscany {
+namespace scribe {
+
+/**
+ * Represents a Scribe connection.
+ */
+class Scribe {
+public:
+ Scribe() : owner(false) {
+ }
+
+ Scribe(const string host, const int port) : owner(true) {
+ init(host, port);
+ }
+
+ Scribe(const Scribe& c) : owner(false) {
+ client = c.client;
+ transport = c.transport;
+ }
+
+ ~Scribe() {
+ if (!owner)
+ return;
+ try {
+ transport->close();
+ delete client;
+ } catch (const std::exception& e) {
+ mkfailure<bool>(e.what());
+ }
+ }
+
+private:
+ bool owner;
+ ::scribe::thrift::scribeClient* client;
+ boost::shared_ptr<apache::thrift::transport::TTransport> transport;
+
+ friend const failable<bool> log(const value& val, const value& category, const Scribe& sc);
+
+ /**
+ * Initialize the Scribe connection.
+ */
+ const failable<bool> init(const string& host, const int port) {
+ try {
+ boost::shared_ptr<apache::thrift::transport::TTransport> sock(new apache::thrift::transport::TSocket(c_str(host), port));
+ boost::shared_ptr<apache::thrift::transport::TFramedTransport> framedSock(new apache::thrift::transport::TFramedTransport(sock));
+ transport = framedSock;
+ boost::shared_ptr<apache::thrift::protocol::TProtocol> proto(new apache::thrift::protocol::TBinaryProtocol(transport));
+ client = new ::scribe::thrift::scribeClient(proto);
+ transport->open();
+ return true;
+ } catch (const std::exception& e) {
+ return mkfailure<bool>(e.what());
+ }
+ }
+};
+
+/**
+ * Log an item.
+ */
+const failable<bool> log(const value& val, const value& category, const Scribe& sc) {
+ debug(val, "scribe::log::value");
+ debug(category, "scribe::log::category");
+
+ const value cat = isString(category)? value(c_str(category)):category;
+ const string cs(scheme::writeValue(cat));
+ const string vs(scheme::writeValue(val));
+
+ try {
+ ::scribe::thrift::LogEntry entry;
+ entry.category = c_str(cs);
+ entry.message = c_str(vs);
+ std::vector< ::scribe::thrift::LogEntry> msgs;
+ msgs.push_back(entry);
+
+ int result = sc.client->Log(msgs);
+ if (result != ::scribe::thrift::OK)
+ return mkfailure<bool>("Could not log value, retry later");
+ } catch (const std::exception& e) {
+ return mkfailure<bool>(e.what());
+ }
+
+ debug(true, "scribe::log::result");
+ return true;
+}
+
+}
+}
+
+#endif /* tuscany_scribe_hpp */