FONcRequestHandler.cc

// FONcRequestHandler.cc
 
// This file is part of bes, A C++ back-end server implementation framework
// for the OPeNDAP Data Access Protocol.
 
// Copyright (c) 2004,2005 University Corporation for Atmospheric Research
// Author: Patrick West <pwest@ucar.edu> and Jose Garcia <jgarcia@ucar.edu>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//
// You can contact University Corporation for Atmospheric Research at
// 3080 Center Green Drive, Boulder, CO 80301
 
// (c) COPYRIGHT University Corporation for Atmospheric Research 2004-2005
// Please read the full copyright statement in the file COPYRIGHT_UCAR.
//
// Authors:
//      pwest       Patrick West <pwest@ucar.edu>
//      jgarcia     Jose Garcia <jgarcia@ucar.edu>
 
#include "config.h"
 
#include <string>
#include <sstream>
 
#include <BESResponseHandler.h>
#include <BESResponseNames.h>
#include <BESVersionInfo.h>
#include <BESDataNames.h>
#include <BESDataNames.h>
#include <TheBESKeys.h>
#include <BESDebug.h>
#include <BESUtil.h>
 
#include "FONcRequestHandler.h"
#include "FONcNames.h"
 
std::string FONcRequestHandler::temp_dir;
bool FONcRequestHandler::byte_to_short;
bool FONcRequestHandler::use_compression;
bool FONcRequestHandler::use_shuffle;
unsigned long long  FONcRequestHandler::chunk_size;
bool FONcRequestHandler::classic_model;
bool FONcRequestHandler::no_global_attrs;
unsigned long long FONcRequestHandler::request_max_size_kb;
bool FONcRequestHandler::nc3_classic_format;
 
using namespace std;
 
static void read_key_value(const string &key_name, bool &key, const bool default_value)
{
    bool key_found = false;
    string value;
    TheBESKeys::TheKeys()->get_value(key_name, value, key_found);
    // 'key' holds the string value at this point if key_found is true
    if (key_found) {
        value = BESUtil::lowercase(value);
        key = (value == "true" || value == "yes");
    }
    else {
        key = default_value;
    }
}
 
static void read_key_value(const string &key_name, string &key, const string &default_value)
{
    bool key_found = false;
    TheBESKeys::TheKeys()->get_value(key_name, key, key_found);
    // 'key' holds the string value at this point if key_found is true
    if (key_found) {
        BESUtil::trim_if_trailing_slash(key);
    }
    else {
        key = default_value;
    }
}
 
static void read_key_value(const string &key_name, size_t &key, const int default_value)
{
    bool key_found = false;
    string value;
    TheBESKeys::TheKeys()->get_value(key_name, value, key_found);
    // 'key' holds the string value at this point if key_found is true
    if (key_found) {
        istringstream iss(value);
        iss >> key;
        // if (iss.eof() || iss.bad() || iss.fail()) key = default_value;
        if (iss.bad() || iss.fail()) key = default_value;
    }
    else {
        key = default_value;
    }
}
 
static void read_key_value(const string &key_name, unsigned long long &key, const unsigned long long default_value)
{
    bool key_found = false;
    string value;
    TheBESKeys::TheKeys()->get_value(key_name, value, key_found);
    // 'key' holds the string value at this point if key_found is true
    if (key_found) {
        try {
            key = stoull(value);
        }
        catch (const std::invalid_argument& ia) {
            key = default_value;
        }
    }
    else {
        key = default_value;
    }
}
 
 
FONcRequestHandler::FONcRequestHandler( const string &name )
    : BESRequestHandler( name )
{
    add_method( HELP_RESPONSE, FONcRequestHandler::build_help ) ;
    add_method( VERS_RESPONSE, FONcRequestHandler::build_version ) ;
 
    if (FONcRequestHandler::temp_dir.empty()) {
        read_key_value(FONC_TEMP_DIR_KEY, FONcRequestHandler::temp_dir, FONC_TEMP_DIR);
    }
 
    // Not currently used. jhrg 11/30/15
    read_key_value(FONC_BYTE_TO_SHORT_KEY, FONcRequestHandler::byte_to_short, FONC_BYTE_TO_SHORT);
 
    read_key_value(FONC_USE_COMP_KEY, FONcRequestHandler::use_compression, FONC_USE_COMP);
 
    read_key_value(FONC_USE_SHUFFLE_KEY, FONcRequestHandler::use_shuffle, FONC_USE_SHUFFLE);
 
    read_key_value(FONC_CHUNK_SIZE_KEY, FONcRequestHandler::chunk_size, FONC_CHUNK_SIZE);
 
    read_key_value(FONC_CLASSIC_MODEL_KEY, FONcRequestHandler::classic_model, FONC_CLASSIC_MODEL);
 
    read_key_value(FONC_NO_GLOBAL_ATTRS_KEY, FONcRequestHandler::no_global_attrs, FONC_NO_GLOBAL_ATTRS);
 
    read_key_value(FONC_REQUEST_MAX_SIZE_KB_KEY, FONcRequestHandler::request_max_size_kb, FONC_REQUEST_MAX_SIZE_KB);
 
    read_key_value(FONC_NC3_CLASSIC_FORMAT_KEY, FONcRequestHandler::nc3_classic_format, FONC_NC3_CLASSIC_FORMAT);
 
    BESDEBUG("fonc", "FONcRequestHandler::temp_dir: " << FONcRequestHandler::temp_dir << endl);
    BESDEBUG("fonc", "FONcRequestHandler::byte_to_short: " << FONcRequestHandler::byte_to_short << endl);
    BESDEBUG("fonc", "FONcRequestHandler::use_compression: " << FONcRequestHandler::use_compression << endl);
    BESDEBUG("fonc", "FONcRequestHandler::use_shuffle: " << FONcRequestHandler::use_shuffle << endl);
    BESDEBUG("fonc", "FONcRequestHandler::chunk_size: " << FONcRequestHandler::chunk_size << endl);
    BESDEBUG("fonc", "FONcRequestHandler::classic_model: " << FONcRequestHandler::classic_model << endl);
    BESDEBUG("fonc", "FONcRequestHandler::turn_off_global_attrs: " << FONcRequestHandler::no_global_attrs << endl);
    BESDEBUG("fonc", "FONcRequestHandler::request_max_size_kb: " << FONcRequestHandler::request_max_size_kb << endl);
    BESDEBUG("fonc", "FONcRequestHandler::nc3_classic_format " << FONcRequestHandler::nc3_classic_format << endl);
}
 
FONcRequestHandler::~FONcRequestHandler()
{
}
 
bool FONcRequestHandler::build_help(BESDataHandlerInterface &dhi)
{
    BESResponseObject *response = dhi.response_handler->get_response_object();
    BESInfo *info = dynamic_cast<BESInfo *>(response);
    if (!info) throw BESInternalError("cast error", __FILE__, __LINE__);
 
    bool found = false;
    string key = "FONc.Reference";
    string ref;
    TheBESKeys::TheKeys()->get_value(key, ref, found);
    if (ref.empty()) ref = "https://docs.opendap.org/index.php/BES_-_Modules_-_FileOut_Netcdf";
    map<string, string> attrs;
    attrs["name"] = MODULE_NAME;
    attrs["version"] = MODULE_VERSION;
    attrs["reference"] = ref;
    info->begin_tag("module", &attrs);
    info->end_tag("module");
 
    return true;
}
 
bool FONcRequestHandler::build_version(BESDataHandlerInterface &dhi)
{
    BESResponseObject *response = dhi.response_handler->get_response_object();
    BESVersionInfo *info = dynamic_cast<BESVersionInfo *>(response);
    if (!info) throw BESInternalError("cast error", __FILE__, __LINE__);
 
    info->add_module(MODULE_NAME, MODULE_VERSION);
 
    return true;
}
 
void
FONcRequestHandler::dump( ostream &strm ) const
{
    strm << BESIndent::LMarg << "FONcRequestHandler::dump - ("
                             << (void *)this << ")" << endl ;
    BESIndent::Indent() ;
    BESRequestHandler::dump( strm ) ;
    BESIndent::UnIndent() ;
}