/*
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*
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* Copyright 2015, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef SYSTEM_EXTRAS_PERFPROFD_CONFIGREADER_H_
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#define SYSTEM_EXTRAS_PERFPROFD_CONFIGREADER_H_
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#include <memory>
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#include <string>
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#include "config.h"
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namespace android {
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namespace perfprofd {
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class ProfilingConfig; // Config proto.
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} // namespace perfprofd
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} // namespace android
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//
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// This table describes the perfprofd config file syntax in terms of
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// key/value pairs. Values come in two flavors: strings, or unsigned
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// integers. In the latter case the reader sets allowable
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// minimum/maximum for the setting.
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//
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class ConfigReader {
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public:
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ConfigReader();
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~ConfigReader();
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// Ask for the current setting of a config item
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unsigned getUnsignedValue(const char *key) const;
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bool getBoolValue(const char *key) const;
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std::string getStringValue(const char *key) const;
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// read the specified config file, applying any settings it contains
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// returns true for successful read, false if conf file cannot be opened.
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bool readFile();
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bool Read(const std::string& data, bool fail_on_error, std::string* error_msg);
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// set/get path to config file
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static void setConfigFilePath(const char *path);
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static const char *getConfigFilePath();
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// override a config item (for unit testing purposes)
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void overrideUnsignedEntry(const char *key, unsigned new_value);
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void FillConfig(Config* config);
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static std::string ConfigToString(const Config& config);
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static void ProtoToConfig(const android::perfprofd::ProfilingConfig& in, Config* out);
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private:
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void addUnsignedEntry(const char *key,
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unsigned default_value,
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unsigned min_value,
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unsigned max_value);
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void addStringEntry(const char *key, const char *default_value);
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void addDefaultEntries();
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bool parseLine(const std::string& key,
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const std::string& value,
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unsigned linecount,
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std::string* error_msg);
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struct Data;
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std::unique_ptr<Data> data_;
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};
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#endif
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