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133 lines
4.5 KiB
C++
133 lines
4.5 KiB
C++
/**
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* Copyright (c) 2020, 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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#include "all_logs_vtab.hh"
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#include "config.h"
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#include "string_attr_type.hh"
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static auto intern_lifetime = intern_string::get_table_lifetime();
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all_logs_vtab::all_logs_vtab()
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: log_vtab_impl(intern_string::lookup("all_logs")),
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alv_value_meta(
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intern_string::lookup("log_format"), value_kind_t::VALUE_TEXT, 0),
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alv_msg_meta(
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intern_string::lookup("log_msg_format"), value_kind_t::VALUE_TEXT, 1),
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alv_schema_meta(
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intern_string::lookup("log_msg_schema"), value_kind_t::VALUE_TEXT, 2)
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{
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this->alv_value_meta.lvm_identifier = true;
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this->alv_msg_meta.lvm_identifier = true;
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this->alv_schema_meta.lvm_identifier = true;
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}
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void
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all_logs_vtab::get_columns(std::vector<vtab_column>& cols) const
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{
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cols.emplace_back(vtab_column(this->alv_value_meta.lvm_name.get())
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.with_comment("The name of the log file format"));
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cols.emplace_back(
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vtab_column(this->alv_msg_meta.lvm_name.get())
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.with_comment(
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"The message format with variables replaced by hash marks"));
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cols.emplace_back(this->alv_schema_meta.lvm_name.get(),
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SQLITE3_TEXT,
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"",
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true,
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"The ID for the message schema");
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}
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void
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all_logs_vtab::extract(std::shared_ptr<logfile> lf,
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uint64_t line_number,
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shared_buffer_ref& line,
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std::vector<logline_value>& values)
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{
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auto format = lf->get_format();
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values.emplace_back(this->alv_value_meta, format->get_name());
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std::vector<logline_value> sub_values;
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this->vi_attrs.clear();
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format->annotate(line_number, line, this->vi_attrs, sub_values, false);
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auto body = find_string_attr_range(this->vi_attrs, &SA_BODY);
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if (body.lr_start == -1) {
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body.lr_start = 0;
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body.lr_end = line.length();
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}
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data_scanner ds(line, body.lr_start, body.lr_end);
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data_parser dp(&ds);
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std::string str;
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dp.dp_msg_format = &str;
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dp.parse();
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tmp_shared_buffer tsb(str.c_str());
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values.emplace_back(this->alv_msg_meta, tsb.tsb_ref);
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this->alv_schema_manager.invalidate_refs();
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dp.dp_schema_id.to_string(this->alv_schema_buffer.data());
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shared_buffer_ref schema_ref;
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schema_ref.share(this->alv_schema_manager,
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this->alv_schema_buffer.data(),
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data_parser::schema_id_t::STRING_SIZE - 1);
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values.emplace_back(this->alv_schema_meta, schema_ref);
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}
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bool
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all_logs_vtab::is_valid(log_cursor& lc, logfile_sub_source& lss)
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{
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auto cl = lss.at(lc.lc_curr_line);
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auto lf = lss.find(cl);
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auto lf_iter = lf->begin() + cl;
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if (!lf_iter->is_message()) {
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return false;
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}
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return true;
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}
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bool
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all_logs_vtab::next(log_cursor& lc, logfile_sub_source& lss)
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{
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lc.lc_curr_line = lc.lc_curr_line + vis_line_t(1);
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lc.lc_sub_index = 0;
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if (lc.is_eof()) {
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return true;
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}
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return this->is_valid(lc, lss);
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}
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