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/*
*
* Copyright 2015, The Android Open Source Project
*
* Licensed 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.
*/
#ifndef SYSTEM_EXTRAS_PERFPROFD_CONFIGREADER_H_
#define SYSTEM_EXTRAS_PERFPROFD_CONFIGREADER_H_
#include <memory>
#include <string>
#include "config.h"
namespace android {
namespace perfprofd {
class ProfilingConfig; // Config proto.
} // namespace perfprofd
} // namespace android
//
// This table describes the perfprofd config file syntax in terms of
// key/value pairs. Values come in two flavors: strings, or unsigned
// integers. In the latter case the reader sets allowable
// minimum/maximum for the setting.
//
class ConfigReader {
public:
ConfigReader();
~ConfigReader();
// Ask for the current setting of a config item
unsigned getUnsignedValue(const char *key) const;
bool getBoolValue(const char *key) const;
std::string getStringValue(const char *key) const;
// read the specified config file, applying any settings it contains
// returns true for successful read, false if conf file cannot be opened.
bool readFile();
bool Read(const std::string& data, bool fail_on_error, std::string* error_msg);
// set/get path to config file
static void setConfigFilePath(const char *path);
static const char *getConfigFilePath();
// override a config item (for unit testing purposes)
void overrideUnsignedEntry(const char *key, unsigned new_value);
void FillConfig(Config* config);
static std::string ConfigToString(const Config& config);
static void ProtoToConfig(const android::perfprofd::ProfilingConfig& in, Config* out);
private:
void addUnsignedEntry(const char *key,
unsigned default_value,
unsigned min_value,
unsigned max_value);
void addStringEntry(const char *key, const char *default_value);
void addDefaultEntries();
bool parseLine(const std::string& key,
const std::string& value,
unsigned linecount,
std::string* error_msg);
struct Data;
std::unique_ptr<Data> data_;
};
#endif
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