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331 lines (296 loc) · 11.6 KB
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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 <algorithm>
#include <cerrno>
#include <cstring>
#include <fstream>
#include <iostream>
#include <list>
#include <map>
#include <sstream>
#define __IN_CONFIGBASE_CPP__
#include "common/config.h"
#undef __IN_CONFIGBASE_CPP__
namespace doris::cloud::config {
std::map<std::string, Register::Field>* Register::_s_field_map = nullptr;
std::map<std::string, std::function<bool()>>* RegisterConfValidator::_s_field_validator = nullptr;
std::map<std::string, std::string>* full_conf_map = nullptr;
// trim string
std::string& trim(std::string& s) {
// rtrim
s.erase(std::find_if(s.rbegin(), s.rend(), [](unsigned char c) { return !std::isspace(c); })
.base(),
s.end());
// ltrim
s.erase(s.begin(),
std::find_if(s.begin(), s.end(), [](unsigned char c) { return !std::isspace(c); }));
return s;
}
// split string by '='
void splitkv(const std::string& s, std::string& k, std::string& v) {
const char sep = '=';
int start = 0;
int end = 0;
if ((end = s.find(sep, start)) != std::string::npos) {
k = s.substr(start, end - start);
v = s.substr(end + 1);
} else {
k = s;
v = "";
}
}
// replace env variables
bool replaceenv(std::string& s) {
std::size_t pos = 0;
std::size_t start = 0;
while ((start = s.find("${", pos)) != std::string::npos) {
std::size_t end = s.find("}", start + 2);
if (end == std::string::npos) {
return false;
}
std::string envkey = s.substr(start + 2, end - start - 2);
const char* envval = std::getenv(envkey.c_str());
if (envval == nullptr) {
return false;
}
s.erase(start, end - start + 1);
s.insert(start, envval);
pos = start + strlen(envval);
}
return true;
}
bool strtox(const std::string& valstr, bool& retval);
bool strtox(const std::string& valstr, int16_t& retval);
bool strtox(const std::string& valstr, int32_t& retval);
bool strtox(const std::string& valstr, int64_t& retval);
bool strtox(const std::string& valstr, double& retval);
bool strtox(const std::string& valstr, std::string& retval);
template <typename T>
bool strtox(const std::string& valstr, std::vector<T>& retval) {
std::stringstream ss(valstr);
std::string item;
T t;
while (std::getline(ss, item, ',')) {
if (!strtox(trim(item), t)) {
return false;
}
retval.push_back(t);
}
return true;
}
bool strtox(const std::string& valstr, bool& retval) {
if (valstr.compare("true") == 0) {
retval = true;
} else if (valstr.compare("false") == 0) {
retval = false;
} else {
return false;
}
return true;
}
template <typename T>
bool strtointeger(const std::string& valstr, T& retval) {
if (valstr.length() == 0) {
return false; // empty-string is only allowed for string type.
}
char* end;
errno = 0;
const char* valcstr = valstr.c_str();
int64_t ret64 = strtoll(valcstr, &end, 10);
if (errno || end != valcstr + strlen(valcstr)) {
return false; // bad parse
}
T tmp = retval;
retval = static_cast<T>(ret64);
if (retval != ret64) {
retval = tmp;
return false;
}
return true;
}
bool strtox(const std::string& valstr, int16_t& retval) {
return strtointeger(valstr, retval);
}
bool strtox(const std::string& valstr, int32_t& retval) {
return strtointeger(valstr, retval);
}
bool strtox(const std::string& valstr, int64_t& retval) {
return strtointeger(valstr, retval);
}
bool strtox(const std::string& valstr, double& retval) {
if (valstr.length() == 0) {
return false; // empty-string is only allowed for string type.
}
char* end = nullptr;
errno = 0;
const char* valcstr = valstr.c_str();
retval = strtod(valcstr, &end);
if (errno || end != valcstr + strlen(valcstr)) {
return false; // bad parse
}
return true;
}
bool strtox(const std::string& valstr, std::string& retval) {
retval = valstr;
return true;
}
template <typename T>
bool convert(const std::string& value, T& retval) {
std::string valstr(value);
trim(valstr);
if (!replaceenv(valstr)) {
return false;
}
return strtox(valstr, retval);
}
// load conf file
bool Properties::load(const char* conf_file, bool must_exist) {
// if conf_file is null, use the empty props
if (conf_file == nullptr) {
return true;
}
// open the conf file
std::ifstream input(conf_file);
if (!input.is_open()) {
if (must_exist) {
std::cerr << "config::load() failed to open the file:" << conf_file << std::endl;
return false;
}
return true;
}
// load properties
std::string line;
std::string key;
std::string value;
line.reserve(512);
while (input) {
// read one line at a time
std::getline(input, line);
// remove left and right spaces
trim(line);
// ignore comments
if (line.empty() || line[0] == '#') {
continue;
}
// read key and value
splitkv(line, key, value);
trim(key);
trim(value);
// insert into file_conf_map
file_conf_map[key] = value;
}
// close the conf file
input.close();
return true;
}
template <typename T>
bool Properties::get_or_default(const char* key, const char* defstr, T& retval,
bool* is_retval_set) const {
const auto& it = file_conf_map.find(std::string(key));
std::string valstr;
if (it == file_conf_map.end()) {
if (defstr == nullptr) {
// Not found in conf map, and no default value need to be set, just return
*is_retval_set = false;
return true;
} else {
valstr = std::string(defstr);
}
} else {
valstr = it->second;
}
*is_retval_set = true;
return convert(valstr, retval);
}
void Properties::set(const std::string& key, const std::string& val) {
file_conf_map.emplace(key, val);
}
void Properties::set_force(const std::string& key, const std::string& val) {
file_conf_map[key] = val;
}
template <typename T>
std::ostream& operator<<(std::ostream& out, const std::vector<T>& v) {
size_t last = v.size() - 1;
for (size_t i = 0; i < v.size(); ++i) {
out << v[i];
if (i != last) {
out << ", ";
}
}
return out;
}
#define SET_FIELD(FIELD, TYPE, FILL_CONF_MAP, SET_TO_DEFAULT) \
if (strcmp((FIELD).type, #TYPE) == 0) { \
TYPE new_value = TYPE(); \
bool is_newval_set = false; \
if (!props.get_or_default((FIELD).name, ((SET_TO_DEFAULT) ? (FIELD).defval : nullptr), \
new_value, &is_newval_set)) { \
std::cerr << "config field error: " << (FIELD).name << std::endl; \
return false; \
} \
if (!is_newval_set) { \
continue; \
} \
TYPE& ref_conf_value = *reinterpret_cast<TYPE*>((FIELD).storage); \
TYPE old_value = ref_conf_value; \
ref_conf_value = new_value; \
if (RegisterConfValidator::_s_field_validator != nullptr) { \
auto validator = RegisterConfValidator::_s_field_validator->find((FIELD).name); \
if (validator != RegisterConfValidator::_s_field_validator->end() && \
!(validator->second)()) { \
ref_conf_value = old_value; \
std::cerr << "validate " << (FIELD).name << "=" << new_value << " failed" \
<< std::endl; \
return false; \
} \
} \
if (FILL_CONF_MAP) { \
std::ostringstream oss; \
oss << ref_conf_value; \
(*full_conf_map)[(FIELD).name] = oss.str(); \
} \
continue; \
}
// init conf fields
bool init(const char* conf_file, bool fill_conf_map, bool must_exist, bool set_to_default) {
Properties props;
// load properties file
if (!props.load(conf_file, must_exist)) {
return false;
}
// fill full_conf_map ?
if (fill_conf_map && full_conf_map == nullptr) {
full_conf_map = new std::map<std::string, std::string>();
}
// set conf fields
for (const auto& it : *Register::_s_field_map) {
SET_FIELD(it.second, bool, fill_conf_map, set_to_default);
SET_FIELD(it.second, int16_t, fill_conf_map, set_to_default);
SET_FIELD(it.second, int32_t, fill_conf_map, set_to_default);
SET_FIELD(it.second, int64_t, fill_conf_map, set_to_default);
SET_FIELD(it.second, double, fill_conf_map, set_to_default);
SET_FIELD(it.second, std::string, fill_conf_map, set_to_default);
SET_FIELD(it.second, std::vector<bool>, fill_conf_map, set_to_default);
SET_FIELD(it.second, std::vector<int16_t>, fill_conf_map, set_to_default);
SET_FIELD(it.second, std::vector<int32_t>, fill_conf_map, set_to_default);
SET_FIELD(it.second, std::vector<int64_t>, fill_conf_map, set_to_default);
SET_FIELD(it.second, std::vector<double>, fill_conf_map, set_to_default);
SET_FIELD(it.second, std::vector<std::string>, fill_conf_map, set_to_default);
}
return true;
}
} // namespace doris::cloud::config