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240 lines
8.8 KiB
C++
240 lines
8.8 KiB
C++
/**
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* Copyright (c) 2021, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @file log_data_helper.cc
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*/
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#include "log_data_helper.hh"
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#include "config.h"
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void
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log_data_helper::clear()
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{
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this->ldh_file = nullptr;
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this->ldh_line_values.lvv_sbr.disown();
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this->ldh_parser.reset();
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this->ldh_scanner.reset();
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this->ldh_namer.reset();
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this->ldh_extra_json.clear();
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this->ldh_json_pairs.clear();
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this->ldh_xml_pairs.clear();
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this->ldh_line_attrs.clear();
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}
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bool
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log_data_helper::parse_line(content_line_t line, bool allow_middle)
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{
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logfile::iterator ll;
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bool retval = false;
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this->ldh_source_line = this->ldh_line_index = line;
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this->ldh_file = this->ldh_log_source.find(this->ldh_line_index);
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ll = this->ldh_file->begin() + this->ldh_line_index;
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this->ldh_y_offset = 0;
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while (allow_middle && ll->is_continued()) {
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--ll;
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this->ldh_y_offset += 1;
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}
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this->ldh_line = ll;
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if (!ll->is_message()) {
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log_warning("failed to parse line %d", line);
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this->ldh_parser.reset();
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this->ldh_scanner.reset();
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this->ldh_namer.reset();
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this->ldh_extra_json.clear();
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this->ldh_json_pairs.clear();
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this->ldh_xml_pairs.clear();
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this->ldh_line_attrs.clear();
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} else {
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auto format = this->ldh_file->get_format();
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struct line_range body;
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auto& sa = this->ldh_line_attrs;
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this->ldh_line_attrs.clear();
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this->ldh_line_values.clear();
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this->ldh_file->read_full_message(ll, this->ldh_line_values.lvv_sbr);
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this->ldh_line_values.lvv_sbr.erase_ansi();
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format->annotate(this->ldh_file.get(),
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this->ldh_line_index,
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sa,
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this->ldh_line_values);
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body = find_string_attr_range(sa, &SA_BODY);
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if (body.lr_start == -1) {
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body.lr_start = this->ldh_line_values.lvv_sbr.length();
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body.lr_end = this->ldh_line_values.lvv_sbr.length();
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}
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this->ldh_scanner = std::make_unique<data_scanner>(
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this->ldh_line_values.lvv_sbr.to_string_fragment().sub_range(
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body.lr_start, body.lr_end));
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this->ldh_parser
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= std::make_unique<data_parser>(this->ldh_scanner.get());
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this->ldh_msg_format.clear();
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this->ldh_parser->dp_msg_format = &this->ldh_msg_format;
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this->ldh_parser->parse();
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this->ldh_namer
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= std::make_unique<column_namer>(column_namer::language::SQL);
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this->ldh_extra_json.clear();
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this->ldh_json_pairs.clear();
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this->ldh_xml_pairs.clear();
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for (const auto& lv : this->ldh_line_values.lvv_values) {
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this->ldh_namer->cn_builtin_names.emplace_back(
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lv.lv_meta.lvm_name.get());
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}
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for (auto& ldh_line_value : this->ldh_line_values.lvv_values) {
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if (ldh_line_value.lv_meta.lvm_name == format->lf_timestamp_field) {
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continue;
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}
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if (ldh_line_value.lv_meta.lvm_column
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.is<logline_value_meta::external_column>())
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{
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char buf[ldh_line_value.lv_meta.lvm_name.size() + 2];
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auto rc = fmt::format_to(
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buf, FMT_STRING("/{}"), ldh_line_value.lv_meta.lvm_name);
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*rc = '\0';
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this->ldh_extra_json[intern_string::lookup(buf, -1)]
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= ldh_line_value.to_string();
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continue;
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}
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switch (ldh_line_value.lv_meta.lvm_kind) {
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case value_kind_t::VALUE_JSON: {
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if (!ldh_line_value.lv_meta.lvm_struct_name.empty()) {
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continue;
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}
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json_ptr_walk jpw;
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if (jpw.parse(ldh_line_value.text_value(),
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ldh_line_value.text_length())
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== yajl_status_ok
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&& jpw.complete_parse() == yajl_status_ok)
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{
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this->ldh_json_pairs[ldh_line_value.lv_meta.lvm_name]
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= jpw.jpw_values;
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}
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break;
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}
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case value_kind_t::VALUE_XML: {
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auto col_name = ldh_line_value.lv_meta.lvm_name;
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pugi::xml_document doc;
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auto parse_res
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= doc.load_buffer(ldh_line_value.text_value(),
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ldh_line_value.text_length());
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if (parse_res) {
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pugi::xpath_query query("//*");
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auto node_set = doc.select_nodes(query);
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for (const auto& xpath_node : node_set) {
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auto node_path = lnav::pugixml::get_actual_path(
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xpath_node.node());
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for (auto& attr : xpath_node.node().attributes()) {
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auto attr_path
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= fmt::format(FMT_STRING("{}/@{}"),
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node_path,
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attr.name());
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this->ldh_xml_pairs[std::make_pair(col_name,
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attr_path)]
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= attr.value();
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}
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if (xpath_node.node().text().empty()) {
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continue;
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}
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auto text_path = fmt::format(
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FMT_STRING("{}/text()"), node_path);
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this->ldh_xml_pairs[std::make_pair(col_name,
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text_path)]
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= trim(xpath_node.node().text().get());
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}
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}
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break;
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}
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default:
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break;
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}
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}
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retval = true;
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}
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return retval;
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}
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int
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log_data_helper::get_line_bounds(size_t& line_index_out,
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size_t& line_end_index_out) const
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{
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int retval = 0;
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line_end_index_out = 0;
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do {
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line_index_out = line_end_index_out;
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const auto* line_end = (const char*) memchr(
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this->ldh_line_values.lvv_sbr.get_data() + line_index_out + 1,
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'\n',
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this->ldh_line_values.lvv_sbr.length() - line_index_out - 1);
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if (line_end != nullptr) {
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line_end_index_out
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= line_end - this->ldh_line_values.lvv_sbr.get_data();
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} else {
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line_end_index_out = std::string::npos;
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}
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retval += 1;
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} while (retval <= this->ldh_y_offset);
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if (line_end_index_out == std::string::npos) {
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line_end_index_out = this->ldh_line_values.lvv_sbr.length();
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}
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return retval;
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}
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std::string
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log_data_helper::format_json_getter(const intern_string_t field, int index)
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{
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std::string retval;
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auto qname = sql_quote_ident(field.get());
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retval
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= lnav::sql::mprintf("jget(%s,%Q)",
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qname.in(),
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this->ldh_json_pairs[field][index].wt_ptr.c_str());
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return retval;
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}
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