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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.
*/
#include "FacebookBase.h"
using namespace facebook::fb303;
using apache::thrift::concurrency::Guard;
FacebookBase::FacebookBase(std::string name) :
name_(name) {
aliveSince_ = (int64_t) time(NULL);
}
inline void FacebookBase::getName(std::string& _return) {
_return = name_;
}
void FacebookBase::setOption(const std::string& key, const std::string& value) {
Guard g(optionsLock_);
options_[key] = value;
}
void FacebookBase::getOption(std::string& _return, const std::string& key) {
Guard g(optionsLock_);
_return = options_[key];
}
void FacebookBase::getOptions(std::map<std::string, std::string> & _return) {
Guard g(optionsLock_);
_return = options_;
}
int64_t FacebookBase::incrementCounter(const std::string& key, int64_t amount) {
counters_.acquireRead();
// if we didn't find the key, we need to write lock the whole map to create it
ReadWriteCounterMap::iterator it = counters_.find(key);
if (it == counters_.end()) {
counters_.release();
counters_.acquireWrite();
// we need to check again to make sure someone didn't create this key
// already while we released the lock
it = counters_.find(key);
if(it == counters_.end()){
counters_[key].value = amount;
counters_.release();
return amount;
}
}
it->second.acquireWrite();
int64_t count = it->second.value + amount;
it->second.value = count;
it->second.release();
counters_.release();
return count;
}
int64_t FacebookBase::setCounter(const std::string& key, int64_t value) {
counters_.acquireRead();
// if we didn't find the key, we need to write lock the whole map to create it
ReadWriteCounterMap::iterator it = counters_.find(key);
if (it == counters_.end()) {
counters_.release();
counters_.acquireWrite();
counters_[key].value = value;
counters_.release();
return value;
}
it->second.acquireWrite();
it->second.value = value;
it->second.release();
counters_.release();
return value;
}
void FacebookBase::getCounters(std::map<std::string, int64_t>& _return) {
// we need to lock the whole thing and actually build the map since we don't
// want our read/write structure to go over the wire
counters_.acquireRead();
for(ReadWriteCounterMap::iterator it = counters_.begin();
it != counters_.end(); ++it)
{
_return[it->first] = it->second.value;
}
counters_.release();
}
int64_t FacebookBase::getCounter(const std::string& key) {
int64_t rv = 0;
counters_.acquireRead();
ReadWriteCounterMap::iterator it = counters_.find(key);
if (it != counters_.end()) {
it->second.acquireRead();
rv = it->second.value;
it->second.release();
}
counters_.release();
return rv;
}
inline int64_t FacebookBase::aliveSince() {
return aliveSince_;
}
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