diff options
author | jsdelfino <jsdelfino@13f79535-47bb-0310-9956-ffa450edef68> | 2010-05-23 18:52:42 +0000 |
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committer | jsdelfino <jsdelfino@13f79535-47bb-0310-9956-ffa450edef68> | 2010-05-23 18:52:42 +0000 |
commit | 8262f6efdd9bf0b99e566e3b7017c1a361f4dd99 (patch) | |
tree | a5b49b3ed69c5f9945addf20071cf5f9692ea680 /sca-cpp/trunk/components/log/logger.cpp | |
parent | 2a73f2e3cc8324450d564578e804a31ca6003e10 (diff) |
Add a logger component that logs and relays all invocations through a reference.
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@947467 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'sca-cpp/trunk/components/log/logger.cpp')
-rw-r--r-- | sca-cpp/trunk/components/log/logger.cpp | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/sca-cpp/trunk/components/log/logger.cpp b/sca-cpp/trunk/components/log/logger.cpp new file mode 100644 index 0000000000..e1f4712d61 --- /dev/null +++ b/sca-cpp/trunk/components/log/logger.cpp @@ -0,0 +1,92 @@ +/* + * 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. + */ + +/* $Rev$ $Date$ */ + +/** + * Scribe-based logger component implementation, used to intercept + * and log service invocations. + */ + +#include "string.hpp" +#include "function.hpp" +#include "list.hpp" +#include "value.hpp" +#include "monad.hpp" +#include "scribe.hpp" + +namespace tuscany { +namespace logger { + +/** + * Component implementation lambda function. + */ +class applyLog { +public: + applyLog(const lambda<value(const list<value>&)>& relay, const value& category, scribe::Scribe& sc) : relay(relay), category(category), sc(sc) { + } + + const value operator()(const list<value>& params) const { + // Log the function params + debug(params, "logger::apply::params"); + scribe::log(params, category, sc); + + // Relay the function + const failable<value> res = relay(params); + + // Log the result + scribe::log(res, category, sc); + return res; + } + +private: + const lambda<value(const list<value>&)> relay; + const value category; + scribe::Scribe& sc; +}; + +/** + * Start the component. + */ +const failable<value> start(unused const list<value>& params) { + // Connect to Scribe + scribe::Scribe& sc = *(new (gc_new<scribe::Scribe>()) scribe::Scribe("localhost", 1464)); + + // Extract the configured relay service and category + const value rel = car(params); + const value category = ((lambda<value(list<value>)>)cadr(params))(list<value>()); + debug(category, "logger::start::category"); + + // Return the component implementation lambda function + return value(lambda<value(const list<value>&)>(applyLog(rel, category, sc))); +} + +} +} + +extern "C" { + +const tuscany::value apply(const tuscany::list<tuscany::value>& params) { + const tuscany::value func(car(params)); + if (func == "start") + return tuscany::logger::start(cdr(params)); + return tuscany::mkfailure<tuscany::value>(); +} + +} |