mirror of https://github.com/tstack/lnav
[xml/xpath] suggest xpath() calls for xml fields
Timothy Stack
3 years ago
parent
6deb7032a6
commit
351ad7a8fc
@ -0,0 +1,199 @@
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/**
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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 ON
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* 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 "config.h"
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#include "log_data_helper.hh"
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void log_data_helper::clear()
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{
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this->ldh_file = nullptr;
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this->ldh_msg.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_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 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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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_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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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_msg);
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format->annotate(this->ldh_line_index, this->ldh_msg, sa, 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_msg.length();
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body.lr_end = this->ldh_msg.length();
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}
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this->ldh_scanner = std::make_unique<data_scanner>(
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this->ldh_msg, body.lr_start, body.lr_end);
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this->ldh_parser = 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 = std::make_unique<column_namer>();
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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) {
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this->ldh_namer->cn_builtin_names.emplace_back(lv.lv_meta.lvm_name.get());
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}
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for (auto & ldh_line_value : this->ldh_line_values) {
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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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json_ptr_walk jpw;
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if (jpw.parse(ldh_line_value.lv_sbr.get_data(), ldh_line_value.lv_sbr.length()) == yajl_status_ok &&
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jpw.complete_parse() == yajl_status_ok) {
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this->ldh_json_pairs[ldh_line_value.lv_meta.lvm_name] = 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 = doc.load_buffer(
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ldh_line_value.lv_sbr.get_data(),
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ldh_line_value.lv_sbr.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 (auto& xpath_node : node_set) {
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auto node_path = lnav::pugixml::get_actual_path(xpath_node.node());
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for (auto& attr : xpath_node.node().attributes()) {
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auto attr_path = fmt::format(
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"{}/@{}", node_path, attr.name());
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this->ldh_xml_pairs[
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std::make_pair(col_name, 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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"{}/text()", node_path);
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this->ldh_xml_pairs[std::make_pair(col_name, 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 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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const char *line_end;
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line_index_out = line_end_index_out;
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line_end = (const char *)memchr(
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this->ldh_msg.get_data() + line_index_out + 1,
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'\n',
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this->ldh_msg.length() - line_index_out - 1);
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if (line_end != nullptr) {
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line_end_index_out = line_end - this->ldh_msg.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_msg.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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auto_mem<char, sqlite3_free> qname;
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auto_mem<char, sqlite3_free> jget;
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std::string retval;
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qname = sql_quote_ident(field.get());
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jget = sqlite3_mprintf("jget(%s,%Q)", qname.in(),
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this->ldh_json_pairs[field][index].wt_ptr.c_str());
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retval = std::string(jget);
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return retval;
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}
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@ -0,0 +1,81 @@
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/**
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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 ON
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* 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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#include "config.h"
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#include "fmtlib/fmt/format.h"
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#include "xml_util.hh"
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namespace lnav {
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namespace pugixml {
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std::string get_actual_path(const pugi::xml_node &node)
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{
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std::string retval;
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auto curr = node;
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while (curr) {
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switch (curr.type()) {
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case pugi::node_null:
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break;
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case pugi::node_pcdata:
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retval += "text()";
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break;
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default: {
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auto name = std::string(curr.name());
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if (curr.previous_sibling(curr.name()) ||
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curr.next_sibling(curr.name())) {
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auto sibling = curr;
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int index = 0;
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while (sibling) {
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index += 1;
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sibling = sibling.previous_sibling(curr.name());
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}
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name = fmt::format("{}[{}]", name, index);
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}
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if (retval.empty()) {
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retval = name;
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} else {
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retval = fmt::format("{}/{}", name, retval);
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}
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break;
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}
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}
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curr = curr.parent();
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}
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return retval;
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}
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}
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}
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@ -0,0 +1,45 @@
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/**
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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 ON
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* 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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#ifndef lnav_xml_util_hh
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#define lnav_xml_util_hh
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#include <string>
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#include "pugixml/pugixml.hpp"
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namespace lnav {
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namespace pugixml {
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std::string get_actual_path(const pugi::xml_node &node);
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}
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}
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#endif
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