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Added InfluxDB-client library

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Version 3.9.0
https://github.com/tobiasschuerg/InfluxDB-Client-for-Arduino
This commit is contained in:
Ruakij
2021-11-23 12:51:13 +01:00
parent 1c5a0638ed
commit 739f27c0b8
30 changed files with 3665 additions and 1 deletions
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108
lib/influxdb-client-3.9.0/query/CsvReader.cpp Normal file
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/**
*
* CsvReader.cpp: Simple Csv parser for comma separated values, with double quotes suppport
*
* MIT License
*
* Copyright (c) 2020 InfluxData
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "CsvReader.h"
CsvReader::CsvReader(HttpStreamScanner *scanner) {
_scanner = scanner;
}
CsvReader::~CsvReader() {
delete _scanner;
}
std::vector<String> CsvReader::getRow() {
return _row;
};
void CsvReader::close() {
clearRow();
_scanner->close();
}
void CsvReader::clearRow() {
std::for_each(_row.begin(), _row.end(), [](String &value){ value = (const char *)nullptr; });
_row.clear();
}
enum class CsvParsingState {
UnquotedField,
QuotedField,
QuotedQuote
};
bool CsvReader::next() {
clearRow();
bool status = _scanner->next();
if(!status) {
_error = _scanner->getError();
return false;
}
String line = _scanner->getLine();
CsvParsingState state = CsvParsingState::UnquotedField;
std::vector<String> fields {""};
size_t i = 0; // index of the current field
for (char c : line) {
switch (state) {
case CsvParsingState::UnquotedField:
switch (c) {
case ',': // end of field
fields.push_back(""); i++;
break;
case '"': state = CsvParsingState::QuotedField;
break;
default: fields[i] += c;
break;
}
break;
case CsvParsingState::QuotedField:
switch (c) {
case '"': state = CsvParsingState::QuotedQuote;
break;
default: fields[i] += c;
break;
}
break;
case CsvParsingState::QuotedQuote:
switch (c) {
case ',': // , after closing quote
fields.push_back(""); i++;
state = CsvParsingState::UnquotedField;
break;
case '"': // "" -> "
fields[i] += '"';
state = CsvParsingState::QuotedField;
break;
default: // end of quote
state = CsvParsingState::UnquotedField;
break;
}
break;
}
}
_row = fields;
return true;
}

51
lib/influxdb-client-3.9.0/query/CsvReader.h Normal file
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/**
*
* CsvReader.h: Simple Csv parser for comma separated values, with double quotes suppport
*
* MIT License
*
* Copyright (c) 2020 InfluxData
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _CSV_READER_
#define _CSV_READER_
#include "HttpStreamScanner.h"
#include <vector>
/**
* CsvReader parses csv line to token by ',' (comma) character.
* It suppports escaped quotes, excaped comma
**/
class CsvReader {
public:
CsvReader(HttpStreamScanner *scanner);
~CsvReader();
bool next();
void close();
std::vector<String> getRow();
int getError() const { return _error; };
private:
void clearRow();
HttpStreamScanner *_scanner = nullptr;
std::vector<String> _row;
int _error = 0;
};
#endif //_CSV_READER_

275
lib/influxdb-client-3.9.0/query/FluxParser.cpp Normal file
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/**
*
* FluxParser.cpp: InfluxDB flux query result parser
*
* MIT License
*
* Copyright (c) 2018-2020 InfluxData
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "FluxParser.h"
// Uncomment bellow in case of a problem and rebuild sketch
//#define INFLUXDB_CLIENT_DEBUG_ENABLE
#include "util/debug.h"
FluxQueryResult::FluxQueryResult(CsvReader *reader) {
_data = std::make_shared<Data>(reader);
}
FluxQueryResult::FluxQueryResult(String error):FluxQueryResult((CsvReader *)nullptr) {
_data->_error = error;
}
FluxQueryResult::FluxQueryResult(const FluxQueryResult &other) {
_data = other._data;
}
FluxQueryResult &FluxQueryResult::operator=(const FluxQueryResult &other) {
if(this != &other) {
_data = other._data;
}
return *this;
}
FluxQueryResult::~FluxQueryResult() {
}
int FluxQueryResult::getColumnIndex(String columnName) {
int i = -1;
std::vector<String>::iterator it = find(_data->_columnNames.begin(), _data->_columnNames.end(), columnName);
if (it != _data->_columnNames.end()) {
i = distance(_data->_columnNames.begin(), it);
}
return i;
}
FluxValue FluxQueryResult::getValueByIndex(int index) {
FluxValue ret;
if(index >= 0 && index < (int)_data->_columnValues.size()) {
ret = _data->_columnValues[index];
}
return ret;
}
FluxValue FluxQueryResult::getValueByName(String columnName) {
FluxValue ret;
int i = getColumnIndex(columnName);
if(i > -1) {
ret = getValueByIndex(i);
}
return ret;
}
void FluxQueryResult::close() {
clearValues();
clearColumns();
if(_data->_reader) {
_data->_reader->close();
}
}
void FluxQueryResult::clearValues() {
std::for_each(_data->_columnValues.begin(), _data->_columnValues.end(), [](FluxValue &value){ value = nullptr; });
_data->_columnValues.clear();
}
void FluxQueryResult::clearColumns() {
std::for_each(_data->_columnNames.begin(), _data->_columnNames.end(), [](String &value){ value = (const char *)nullptr; });
_data->_columnNames.clear();
std::for_each(_data->_columnDatatypes.begin(), _data->_columnDatatypes.end(), [](String &value){ value = (const char *)nullptr; });
_data->_columnDatatypes.clear();
}
FluxQueryResult::Data::Data(CsvReader *reader):_reader(reader) {}
FluxQueryResult::Data::~Data() {
delete _reader;
}
enum ParsingState {
ParsingStateNormal = 0,
ParsingStateNameRow,
ParsingStateError
};
bool FluxQueryResult::next() {
if(!_data->_reader) {
return false;
}
ParsingState parsingState = ParsingStateNormal;
_data->_tableChanged = false;
clearValues();
_data->_error = "";
readRow:
bool stat = _data->_reader->next();
if(!stat) {
if(_data->_reader->getError()< 0) {
_data->_error = HTTPClient::errorToString(_data->_reader->getError());
INFLUXDB_CLIENT_DEBUG("Error '%s'\n", _data->_error.c_str());
}
return false;
}
std::vector<String> vals = _data->_reader->getRow();
INFLUXDB_CLIENT_DEBUG("[D] FluxQueryResult: vals.size %d\n", vals.size());
if(vals.size() < 2) {
goto readRow;
}
if(vals[0] == "") {
if (parsingState == ParsingStateError) {
String message ;
if (vals.size() > 1 && vals[1].length() > 0) {
message = vals[1];
} else {
message = F("Unknown query error");
}
String reference = "";
if (vals.size() > 2 && vals[2].length() > 0) {
reference = "," + vals[2];
}
_data->_error = message + reference;
INFLUXDB_CLIENT_DEBUG("Error '%s'\n", _data->_error.c_str());
return false;
} else if (parsingState == ParsingStateNameRow) {
if (vals[1] == "error") {
parsingState = ParsingStateError;
} else {
if (vals.size()-1 != _data->_columnDatatypes.size()) {
_data->_error = String(F("Parsing error, header has different number of columns than table: ")) + String(vals.size()-1) + " vs " + String(_data->_columnDatatypes.size());
INFLUXDB_CLIENT_DEBUG("Error '%s'\n", _data->_error.c_str());
return false;
} else {
for(unsigned int i=1;i < vals.size(); i++) {
_data->_columnNames.push_back(vals[i]);
}
}
parsingState = ParsingStateNormal;
}
goto readRow;
}
if(_data->_columnDatatypes.size() == 0) {
_data->_error = F("Parsing error, datatype annotation not found");
INFLUXDB_CLIENT_DEBUG("Error '%s'\n", _data->_error.c_str());
return false;
}
if (vals.size()-1 != _data->_columnNames.size()) {
_data->_error = String(F("Parsing error, row has different number of columns than table: ")) + String(vals.size()-1) + " vs " + String(_data->_columnNames.size());
INFLUXDB_CLIENT_DEBUG("Error '%s'\n", _data->_error.c_str());
return false;
}
for(unsigned int i=1;i < vals.size(); i++) {
FluxBase *v = nullptr;
if(vals[i].length() > 0) {
v = convertValue(vals[i], _data->_columnDatatypes[i-1]);
if(!v) {
_data->_error = String(F("Unsupported datatype: ")) + _data->_columnDatatypes[i-1];
INFLUXDB_CLIENT_DEBUG("Error '%s'\n", _data->_error.c_str());
return false;
}
}
FluxValue val(v);
_data->_columnValues.push_back(val);
}
} else if(vals[0] == "#datatype") {
_data->_tablePosition++;
clearColumns();
_data->_tableChanged = true;
for(unsigned int i=1;i < vals.size(); i++) {
_data->_columnDatatypes.push_back(vals[i]);
}
parsingState = ParsingStateNameRow;
goto readRow;
} else {
goto readRow;
}
return true;
}
FluxDateTime *FluxQueryResult::convertRfc3339(String value, const char *type) {
tm t = {0,0,0,0,0,0,0,0,0};
// has the time part
int zet = value.indexOf('Z');
unsigned long fracts = 0;
if(value.indexOf('T') > 0 && zet > 0) { //Full datetime string - 2020-05-22T11:25:22.037735433Z
int f = sscanf(value.c_str(),"%d-%d-%dT%d:%d:%d", &t.tm_year,&t.tm_mon,&t.tm_mday, &t.tm_hour,&t.tm_min,&t.tm_sec);
if(f != 6) {
return nullptr;
}
t.tm_year -= 1900; //adjust to years after 1900
t.tm_mon -= 1; //adjust to range 0-11
int dot = value.indexOf('.');
if(dot > 0) {
int tail = zet;
int len = zet-dot-1;
if (len > 6) {
tail = dot + 7;
len = 6;
}
String secParts = value.substring(dot+1, tail);
fracts = strtoul((const char *) secParts.c_str(), NULL, 10);
if(len < 6) {
fracts *= 10^(6-len);
}
}
} else {
int f = sscanf(value.c_str(),"%d-%d-%d", &t.tm_year,&t.tm_mon,&t.tm_mday);
if(f != 3) {
return nullptr;
}
t.tm_year -= 1900; //adjust to years after 1900
t.tm_mon -= 1; //adjust to range 0-11
}
return new FluxDateTime(value, type, t, fracts);
}
FluxBase *FluxQueryResult::convertValue(String value, String dataType) {
FluxBase *ret = nullptr;
if(dataType.equals(FluxDatatypeDatetimeRFC3339) || dataType.equals(FluxDatatypeDatetimeRFC3339Nano)) {
const char *type = FluxDatatypeDatetimeRFC3339;
if(dataType.equals(FluxDatatypeDatetimeRFC3339Nano)) {
type = FluxDatatypeDatetimeRFC3339Nano;
}
ret = convertRfc3339(value, type);
if (!ret) {
_data->_error = String(F("Invalid value for '")) + dataType + F("': ") + value;
}
} else if(dataType.equals(FluxDatatypeDouble)) {
double val = strtod((const char *) value.c_str(), NULL);
ret = new FluxDouble(value, val);
} else if(dataType.equals(FluxDatatypeBool)) {
bool val = value.equalsIgnoreCase("true");
ret = new FluxBool(value, val);
} else if(dataType.equals(FluxDatatypeLong)) {
long l = strtol((const char *) value.c_str(), NULL, 10);
ret = new FluxLong(value, l);
} else if(dataType.equals(FluxDatatypeUnsignedLong)) {
unsigned long ul = strtoul((const char *) value.c_str(), NULL, 10);
ret = new FluxUnsignedLong(value, ul);
} else if(dataType.equals(FluxBinaryDataTypeBase64)) {
ret = new FluxString(value, FluxBinaryDataTypeBase64);
} else if(dataType.equals(FluxDatatypeDuration)) {
ret = new FluxString(value, FluxDatatypeDuration);
} else if(dataType.equals(FluxDatatypeString)) {
ret = new FluxString(value, FluxDatatypeString);
}
return ret;
}

109
lib/influxdb-client-3.9.0/query/FluxParser.h Normal file
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/**
*
* FLuxParser.h: InfluxDB flux query result parser
*
* MIT License
*
* Copyright (c) 2020 InfluxData
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _FLUX_PARSER_H_
#define _FLUX_PARSER_H_
#include <vector>
#include "CsvReader.h"
#include "FluxTypes.h"
/**
* FluxQueryResult represents result from InfluxDB flux query.
* It parses stream from server, line by line, so it allows to read a huge responses.
*
* Browsing thought the result is done by repeatedly calling the next() method, until it returns false.
* Unsuccesful reading is distinqushed by non empty value from getError().
*
* As a flux query result can contain several tables differing by grouping key, use hasTableChanged() to
* know when there is a new table.
*
* Single values are returned using getValueByIndex() or getValueByName() methods.
* All row values are retreived by getValues().
*
* Always call close() at the of reading.
*
* FluxQueryResult supports passing by value.
*/
class FluxQueryResult {
public:
// Constructor for reading result
FluxQueryResult(CsvReader *reader);
// Constructor for error result
FluxQueryResult(String error);
// Copy constructor
FluxQueryResult(const FluxQueryResult &other);
// Assignment operator
FluxQueryResult &operator=(const FluxQueryResult &other);
// Advances to next values row in the result set.
// Returns true on successful reading new row, false means end of the result set
// or an error. Call getError() and check non empty value
bool next();
// Returns index of the column, or -1 if not found
int getColumnIndex(String columnName);
// Returns a converted value by index, or nullptr in case of missing value or wrong index
FluxValue getValueByIndex(int index);
// Returns a result value by column name, or nullptr in case of missing value or wrong column name
FluxValue getValueByName(String columnName);
// Returns flux datatypes of all columns
std::vector<String> getColumnsDatatype() { return _data->_columnDatatypes; }
// Returns names of all columns
std::vector<String> getColumnsName() { return _data->_columnNames; }
// Returns all values from current row
std::vector<FluxValue> getValues() { return _data->_columnValues; }
// Returns true if new table was encountered
bool hasTableChanged() const { return _data->_tableChanged; }
// Returns current table position in the results set
int getTablePosition() const { return _data->_tablePosition; }
// Returns an error found during parsing if any, othewise empty string
String getError() { return _data->_error; }
// Releases all resources and closes server reponse. It must be always called at end of reading.
void close();
// Descructor
~FluxQueryResult();
protected:
FluxBase *convertValue(String value, String dataType);
static FluxDateTime *convertRfc3339(String value, const char *type);
void clearValues();
void clearColumns();
private:
class Data {
public:
Data(CsvReader *reader);
~Data();
CsvReader *_reader;
int _tablePosition = -1;
bool _tableChanged = false;
std::vector<String> _columnDatatypes;
std::vector<String> _columnNames;
std::vector<FluxValue> _columnValues;
String _error;
};
std::shared_ptr<Data> _data;
};
#endif //#_FLUX_PARSER_H_

181
lib/influxdb-client-3.9.0/query/FluxTypes.cpp Normal file
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/**
*
* FluxTypes.cpp: InfluxDB flux query types support
*
* MIT License
*
* Copyright (c) 2018-2020 InfluxData
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "FluxTypes.h"
const char *FluxDatatypeString = "string";
const char *FluxDatatypeDouble = "double";
const char *FluxDatatypeBool = "boolean";
const char *FluxDatatypeLong = "long";
const char *FluxDatatypeUnsignedLong = "unsignedLong";
const char *FluxDatatypeDuration = "duration";
const char *FluxBinaryDataTypeBase64 = "base64Binary";
const char *FluxDatatypeDatetimeRFC3339 = "dateTime:RFC3339";
const char *FluxDatatypeDatetimeRFC3339Nano = "dateTime:RFC3339Nano";
FluxBase::FluxBase(String rawValue) {
_rawValue = rawValue;
}
FluxBase::~FluxBase() {
}
FluxLong::FluxLong(String rawValue, long value):FluxBase(rawValue),value(value) {
}
const char *FluxLong::getType() {
return FluxDatatypeLong;
}
FluxUnsignedLong::FluxUnsignedLong(String rawValue, unsigned long value):FluxBase(rawValue),value(value) {
}
const char *FluxUnsignedLong::getType() {
return FluxDatatypeUnsignedLong;
}
FluxDouble::FluxDouble(String rawValue, double value):FluxBase(rawValue),value(value) {
}
const char *FluxDouble::getType() {
return FluxDatatypeDouble;
}
FluxBool::FluxBool(String rawValue, bool value):FluxBase(rawValue),value(value) {
}
const char *FluxBool::getType() {
return FluxDatatypeBool;
}
FluxDateTime::FluxDateTime(String rawValue, const char *type, struct tm value, unsigned long microseconds):FluxBase(rawValue),_type(type),value(value), microseconds(microseconds) {
}
const char *FluxDateTime::getType() {
return _type;
}
String FluxDateTime::format(String formatString) {
int len = formatString.length() + 20; //+20 for safety
char *buff = new char[len];
strftime(buff,len, formatString.c_str(),&value);
String str = buff;
delete [] buff;
return str;
}
FluxString::FluxString(String rawValue, const char *type):FluxBase(rawValue),_type(type),value(_rawValue) {
}
const char *FluxString::getType() {
return _type;
}
FluxValue::FluxValue() {}
FluxValue::FluxValue(FluxBase *fluxValue):_data(fluxValue) {
}
FluxValue::FluxValue(const FluxValue &other) {
_data = other._data;
}
FluxValue& FluxValue::operator=(const FluxValue& other) {
if(this != &other) {
_data = other._data;
}
return *this;
}
// Type accessor. If value is different type zero value for given time is returned.
String FluxValue::getString() {
if(_data && (_data->getType() == FluxDatatypeString ||_data->getType() == FluxDatatypeDuration || _data->getType() == FluxBinaryDataTypeBase64)) {
FluxString *s = (FluxString *)_data.get();
return s->value;
}
return "";
}
long FluxValue::getLong() {
if(_data && _data->getType() == FluxDatatypeLong) {
FluxLong *l = (FluxLong *)_data.get();
return l->value;
}
return 0;
}
unsigned long FluxValue::getUnsignedLong() {
if(_data && _data->getType() == FluxDatatypeUnsignedLong) {
FluxUnsignedLong *l = (FluxUnsignedLong *)_data.get();
return l->value;
}
return 0;
}
FluxDateTime FluxValue::getDateTime() {
if(_data && (_data->getType() == FluxDatatypeDatetimeRFC3339 ||_data->getType() == FluxDatatypeDatetimeRFC3339Nano)) {
FluxDateTime *d = (FluxDateTime *)_data.get();
return *d;
}
return FluxDateTime("",FluxDatatypeDatetimeRFC3339, {0,0,0,0,0,0,0,0,0}, 0 );
}
bool FluxValue::getBool() {
if(_data && _data->getType() == FluxDatatypeBool) {
FluxBool *b = (FluxBool *)_data.get();
return b->value;
}
return false;
}
double FluxValue::getDouble() {
if(_data && _data->getType() == FluxDatatypeDouble) {
FluxDouble *d = (FluxDouble *)_data.get();
return d->value;
}
return 0.0;
}
// returns string representation of non-string values
String FluxValue::getRawValue() {
if(_data) {
return _data->getRawValue();
}
return "";
}
bool FluxValue::isNull() {
return _data == nullptr;
}

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lib/influxdb-client-3.9.0/query/FluxTypes.h Normal file
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/**
*
* FLuxTypes.h: InfluxDB flux types representation
*
* MIT License
*
* Copyright (c) 2020 InfluxData
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _FLUX_TYPES_H_
#define _FLUX_TYPES_H_
#include <Arduino.h>
#include <memory>
/** Supported flux types:
* - long - converts to long
* - unsignedLong - converts to unsigned long
* - double - converts to double
* - bool - converts to bool
* - dateTime:RFC3339 - converts to FluxDataTime
* - dateTime:RFC3339Nano - converts to FluxDataTime
* other types defaults to String
*/
extern const char *FluxDatatypeString;
extern const char *FluxDatatypeDouble;
extern const char *FluxDatatypeBool;
extern const char *FluxDatatypeLong;
extern const char *FluxDatatypeUnsignedLong;
extern const char *FluxDatatypeDuration;
extern const char *FluxBinaryDataTypeBase64;
extern const char *FluxDatatypeDatetimeRFC3339;
extern const char *FluxDatatypeDatetimeRFC3339Nano;
// Base type for all specific flux types
class FluxBase {
protected:
String _rawValue;
public:
FluxBase(String rawValue);
virtual ~FluxBase();
String getRawValue() const { return _rawValue; }
virtual const char *getType() = 0;
};
// Represents flux long
class FluxLong : public FluxBase {
public:
FluxLong(String rawValue, long value);
long value;
virtual const char *getType() override;
};
// Represents flux unsignedLong
class FluxUnsignedLong : public FluxBase {
public:
FluxUnsignedLong(String rawValue, unsigned long value);
unsigned long value;
virtual const char *getType() override;
};
// Represents flux double
class FluxDouble : public FluxBase {
public:
FluxDouble(String rawValue, double value);
double value;
virtual const char *getType() override;
};
// Represents flux bool
class FluxBool : public FluxBase {
public:
FluxBool(String rawValue, bool value);
bool value;
virtual const char *getType() override;
};
// Represents flux dateTime:RFC3339 and dateTime:RFC3339Nano
// Date and time are stored in classic struct tm.
// Fraction of second is stored in microseconds
// There are several classic functions for using struct tm: http://www.cplusplus.com/reference/ctime/
class FluxDateTime : public FluxBase {
protected:
const char *_type;
public:
FluxDateTime(String rawValue, const char *type, struct tm value, unsigned long microseconds);
// Struct tm for date and time
struct tm value;
// microseconds part
unsigned long microseconds;
// Formats the value part to string according to the given format. Microseconds are skipped.
// Format string must be compatible with the http://www.cplusplus.com/reference/ctime/strftime/
String format(String formatString);
virtual const char *getType() override;
};
// Represents flux string, duration, base64binary
class FluxString : public FluxBase {
protected:
const char *_type;
public:
FluxString(String rawValue, const char *type);
String value;
virtual const char *getType() override;
};
/**
* FluxValue wraps a value from a flux query result column.
* It provides getter methods for supported flux types:
* * getString() - string, base64binary or duration
* * getLong() - long
* * getUnsignedLong() - unsignedLong
* * getDateTime() - dateTime:RFC3339 or dateTime:RFC3339Nano
* * getBool() - bool
* * getDouble() - double
*
* Calling improper type getter will result in zero (empty) value.
* Check for null value usig isNull().
* Use getRawValue() for getting original string form.
*
**/
class FluxValue {
public:
FluxValue();
FluxValue(FluxBase *value);
FluxValue(const FluxValue &other);
FluxValue& operator=(const FluxValue& other);
// Check if value represent null - not present - value.
bool isNull();
// Returns a value of string, base64binary or duration type column, or empty string if column is a different type.
String getString();
// Returns a value of long type column, or zero if column is a different type.
long getLong();
// Returns a value of unsigned long type column, or zero if column is a different type.
unsigned long getUnsignedLong();
// Returns a value of dateTime:RFC3339 or dateTime:RFC3339Nano, or zeroed FluxDateTime instance if column is a different type.
FluxDateTime getDateTime();
// Returns a value of bool type column, or false if column is a different type.
bool getBool();
// Returns a value of double type column, or 0.0 if column is a different type.
double getDouble();
// Returns a value in the original string form, as presented in the response.
String getRawValue();
private:
std::shared_ptr<FluxBase> _data;
};
#endif //_FLUX_TYPES_H_

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/**
*
* HttpStreamScanner.cpp: Scannes HttpClient stream for lines. Supports chunking.
*
* MIT License
*
* Copyright (c) 2020 InfluxData
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "HttpStreamScanner.h"
// Uncomment bellow in case of a problem and rebuild sketch
//#define INFLUXDB_CLIENT_DEBUG_ENABLE
#include "util/debug.h"
#include "util/helpers.h"
HttpStreamScanner::HttpStreamScanner(HTTPClient *client, bool chunked)
{
_client = client;
_stream = client->getStreamPtr();
_chunked = chunked;
_chunkHeader = chunked;
_len = client->getSize();
INFLUXDB_CLIENT_DEBUG("[D] HttpStreamScanner: chunked: %s, size: %d\n", bool2string(_chunked), _len);
}
bool HttpStreamScanner::next() {
while(_client->connected() && (_len > 0 || _len == -1)) {
_line = _stream->readStringUntil('\n');
INFLUXDB_CLIENT_DEBUG("[D] HttpStreamScanner: line: %s\n", _line.c_str());
++_linesNum;
int lineLen = _line.length();
if(lineLen == 0) {
_error = HTTPC_ERROR_READ_TIMEOUT;
return false;
}
int r = lineLen +1; //+1 for terminating \n
_line.trim(); //remove \r
if(!_chunked || !_chunkHeader) {
_read += r;
if(_lastChunkLine.length() > 0) { //fix broken line
_line = _lastChunkLine + _line;
_lastChunkLine = "";
}
}
if(_chunkHeader && r == 2) { //empty line at the end of chunk
//last line was complete so return
_line = _lastChunkLine;
_lastChunkLine = "";
return true;
}
if(_chunkHeader){
_chunkLen = (int) strtol((const char *) _line.c_str(), NULL, 16);
INFLUXDB_CLIENT_DEBUG("[D] HttpStreamScanner chunk len: %d\n", _chunkLen);
_chunkHeader = false;
_read = 0;
if(_chunkLen == 0) { //last chunk
_error = 0;
_line = "";
return false;
} else {
continue;
}
} else if(_chunked && _read >= _chunkLen){ //we reached end of chunk.
_lastChunkLine = _line;
_chunkHeader = true;
continue;
}
if(_len > 0) {
_len -= r;
INFLUXDB_CLIENT_DEBUG("[D] HttpStreamScanner new len: %d\n", _len);
}
return true;
}
if(!_client->connected() && ( (_chunked && _chunkLen > 0) || (!_chunked && _len > 0))) { //report error only if we didn't went to
_error = HTTPC_ERROR_CONNECTION_LOST;
INFLUXDB_CLIENT_DEBUG("HttpStreamScanner connection lost\n");
}
return false;
}
void HttpStreamScanner::close() {
_client->end();
}

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/**
*
* HttpStreamScanner.h: Scannes HttpClient stream for lines. Supports chunking.
*
* MIT License
*
* Copyright (c) 2020 InfluxData
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _HTTP_STREAM_SCANNER_
#define _HTTP_STREAM_SCANNER_
#if defined(ESP8266)
# include <ESP8266HTTPClient.h>
#elif defined(ESP32)
# include <HTTPClient.h>
#endif //ESP8266
/**
* HttpStreamScanner parses response stream from HTTPClient for lines.
* By repeatedly calling next() it searches for new line.
* If next() returns false, it can mean end of stream or an error.
* Check getError() for nonzero if an error occured
*/
class HttpStreamScanner {
public:
HttpStreamScanner(HTTPClient *client, bool chunked);
bool next();
void close();
const String &getLine() const { return _line; }
int getError() const { return _error; }
int getLinesNum() const {return _linesNum; }
private:
HTTPClient *_client;
Stream *_stream = nullptr;
int _len;
String _line;
int _linesNum= 0;
int _read = 0;
bool _chunked;
bool _chunkHeader;
int _chunkLen = 0;
String _lastChunkLine;
int _error = 0;
};
#endif //#_HTTP_STREAM_SCANNER_