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/**
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* Copyright (c) 2007-2012, 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 logfile_sub_source.hh
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*/
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#ifndef __logfile_sub_source_hh
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#define __logfile_sub_source_hh
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#include <limits.h>
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#include <map>
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#include <list>
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#include <sstream>
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#include <vector>
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#include <algorithm>
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#include "lnav_log.hh"
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#include "log_accel.hh"
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#include "strong_int.hh"
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#include "logfile.hh"
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#include "bookmarks.hh"
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#include "chunky_index.hh"
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#include "textview_curses.hh"
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STRONG_INT_TYPE(uint64_t, content_line);
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class line_filter_observer : public logline_observer {
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public:
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line_filter_observer(filter_stack &fs, logfile *lf)
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: lfo_filter_stack(fs), lfo_filter_state(lf) {
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};
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void logline_restart(const logfile &lf) {
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for (filter_stack::iterator iter = this->lfo_filter_stack.begin();
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iter != this->lfo_filter_stack.end();
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++iter) {
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(*iter)->revert_to_last(this->lfo_filter_state);
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}
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};
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void logline_new_line(const logfile &lf, logfile::const_iterator ll, shared_buffer_ref &sbr) {
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long offset = std::distance(lf.begin(), ll);
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require(&lf == this->lfo_filter_state.tfs_logfile);
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this->lfo_filter_state.resize(lf.size());
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for (filter_stack::iterator iter = this->lfo_filter_stack.begin();
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iter != this->lfo_filter_stack.end();
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++iter) {
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if (offset >= this->lfo_filter_state.tfs_filter_count[(*iter)->get_index()]) {
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(*iter)->add_line(this->lfo_filter_state, ll, sbr);
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}
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}
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};
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void logline_eof(const logfile &lf) {
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for (filter_stack::iterator iter = this->lfo_filter_stack.begin();
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iter != this->lfo_filter_stack.end();
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++iter) {
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(*iter)->end_of_message(this->lfo_filter_state);
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}
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};
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bool excluded(uint32_t enabled_mask, size_t offset) const {
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return (this->lfo_filter_state.tfs_mask[offset] & enabled_mask) != 0;
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};
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size_t get_min_count(size_t max) const {
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size_t retval = max;
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for (filter_stack::iterator iter = this->lfo_filter_stack.begin();
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iter != this->lfo_filter_stack.end();
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++iter) {
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retval = std::min(retval, this->lfo_filter_state.tfs_filter_count[(*iter)->get_index()]);
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}
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return retval;
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};
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filter_stack &lfo_filter_stack;
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logfile_filter_state lfo_filter_state;
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};
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/**
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* Delegate class that merges the contents of multiple log files into a single
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* source of data for a text view.
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*/
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class logfile_sub_source
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: public text_sub_source {
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public:
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class observer
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: public logfile_observer {
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public:
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virtual void logfile_sub_source_filtering(logfile_sub_source &lss,
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vis_line_t cl,
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size_t total) = 0;
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};
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static bookmark_type_t BM_ERRORS;
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static bookmark_type_t BM_WARNINGS;
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static bookmark_type_t BM_FILES;
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virtual void text_filters_changed();
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logfile_sub_source();
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virtual ~logfile_sub_source();
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void toggle_scrub(void) {
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this->lss_flags ^= F_SCRUB;
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this->clear_line_size_cache();
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};
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void toggle_time_offset(void) {
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this->lss_flags ^= F_TIME_OFFSET;
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this->clear_line_size_cache();
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};
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void set_time_offset(bool enabled) {
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if (enabled)
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this->lss_flags |= F_TIME_OFFSET;
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else
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this->lss_flags &= ~F_TIME_OFFSET;
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this->clear_line_size_cache();
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};
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bool is_time_offset_enabled(void) const {
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return (bool) (this->lss_flags & F_TIME_OFFSET);
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};
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logline::level_t get_min_log_level(void) const {
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return this->lss_min_log_level;
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};
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void set_min_log_level(logline::level_t level) {
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if (this->lss_min_log_level != level) {
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this->lss_min_log_level = level;
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this->text_filters_changed();
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}
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};
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size_t text_line_count()
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{
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return this->lss_filtered_index.size();
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};
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bool empty() const { return this->lss_filtered_index.empty(); };
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void text_value_for_line(textview_curses &tc,
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int row,
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std::string &value_out,
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bool raw);
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void text_attrs_for_line(textview_curses &tc,
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int row,
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string_attrs_t &value_out);
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size_t text_size_for_line(textview_curses &tc, int row, bool raw) {
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size_t index = row % LINE_SIZE_CACHE_SIZE;
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if (this->lss_line_size_cache[index].first != row) {
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std::string value;
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this->text_value_for_line(tc, row, value, raw);
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this->lss_line_size_cache[index].second = value.size();
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this->lss_line_size_cache[index].first = row;
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}
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return this->lss_line_size_cache[index].second;
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};
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void text_mark(bookmark_type_t *bm, int line, bool added)
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{
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content_line_t cl = this->at(vis_line_t(line));
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std::vector<content_line_t>::iterator lb;
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if (bm == &textview_curses::BM_USER) {
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logline *ll = this->find_line(cl);
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ll->set_mark(added);
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}
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lb = std::lower_bound(this->lss_user_marks[bm].begin(),
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this->lss_user_marks[bm].end(),
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cl);
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if (added) {
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if (lb == this->lss_user_marks[bm].end() || *lb != cl) {
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this->lss_user_marks[bm].insert(lb, cl);
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}
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}
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else if (lb != this->lss_user_marks[bm].end() && *lb == cl) {
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require(lb != this->lss_user_marks[bm].end());
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this->lss_user_marks[bm].erase(lb);
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}
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};
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void text_clear_marks(bookmark_type_t *bm)
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{
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std::vector<content_line_t>::iterator iter;
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if (bm == &textview_curses::BM_USER) {
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for (iter = this->lss_user_marks[bm].begin();
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iter != this->lss_user_marks[bm].end();
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++iter) {
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this->find_line(*iter)->set_mark(false);
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}
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}
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this->lss_user_marks[bm].clear();
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};
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bool insert_file(logfile *lf)
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{
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iterator existing;
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require(lf->size() < MAX_LINES_PER_FILE);
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existing = std::find_if(this->lss_files.begin(),
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this->lss_files.end(),
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logfile_data_eq(NULL));
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if (existing == this->lss_files.end()) {
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if (this->lss_files.size() >= MAX_FILES) {
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return false;
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}
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this->lss_files.push_back(new logfile_data(this->lss_files.size(), this->get_filters(), lf));
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}
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else {
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(*existing)->set_file(lf);
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}
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return true;
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};
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void remove_file(logfile *lf)
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{
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iterator iter;
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iter = std::find_if(this->lss_files.begin(),
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this->lss_files.end(),
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logfile_data_eq(lf));
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if (iter != this->lss_files.end()) {
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bookmarks<content_line_t>::type::iterator mark_iter;
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int file_index = iter - this->lss_files.begin();
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(*iter)->clear();
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for (mark_iter = this->lss_user_marks.begin();
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mark_iter != this->lss_user_marks.end();
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++mark_iter) {
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content_line_t mark_curr = content_line_t(
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file_index * MAX_LINES_PER_FILE);
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content_line_t mark_end = content_line_t(
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(file_index + 1) * MAX_LINES_PER_FILE);
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bookmark_vector<content_line_t>::iterator bv_iter;
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bookmark_vector<content_line_t> & bv =
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mark_iter->second;
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while ((bv_iter =
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std::lower_bound(bv.begin(), bv.end(),
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mark_curr)) != bv.end()) {
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if (*bv_iter >= mark_end) {
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break;
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}
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mark_iter->second.erase(bv_iter);
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}
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}
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}
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};
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bool rebuild_index(observer *obs = NULL, bool force = false);
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void text_update_marks(vis_bookmarks &bm);
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void set_user_mark(bookmark_type_t *bm, content_line_t cl)
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{
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this->lss_user_marks[bm].insert_once(cl);
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};
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bookmarks<content_line_t>::type &get_user_bookmarks(void)
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{
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return this->lss_user_marks;
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};
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std::map<content_line_t, bookmark_metadata> &get_user_bookmark_metadata(void) {
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return this->lss_user_mark_metadata;
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};
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int get_filtered_count() const { return this->lss_filtered_count; };
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logfile *find(const char *fn, content_line_t &line_base);
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logfile *find(content_line_t &line)
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{
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logfile *retval;
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retval = this->lss_files[line / MAX_LINES_PER_FILE]->get_file();
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line = content_line_t(line % MAX_LINES_PER_FILE);
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return retval;
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};
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logline *find_line(content_line_t line)
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{
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logline *retval = NULL;
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logfile *lf = this->find(line);
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if (lf != NULL) {
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logfile::iterator ll_iter = lf->begin() + line;
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retval = &(*ll_iter);
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}
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return retval;
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};
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vis_line_t find_from_time(const struct timeval &start);
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vis_line_t find_from_time(time_t start) {
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struct timeval tv = { start, 0 };
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return this->find_from_time(tv);
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};
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content_line_t at(vis_line_t vl) {
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return this->lss_index[this->lss_filtered_index[vl]];
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};
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content_line_t at_base(vis_line_t vl) {
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while (this->find_line(this->at(vl))->get_sub_offset() != 0) {
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--vl;
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}
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return this->at(vl);
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};
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log_accel::direction_t get_line_accel_direction(vis_line_t vl);
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/**
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* Container for logfile references that keeps of how many lines in the
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* logfile have been indexed.
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*/
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struct logfile_data {
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logfile_data(size_t index, filter_stack &fs, logfile *lf)
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: ld_file_index(index),
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ld_filter_state(fs, lf),
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ld_lines_indexed(0) {
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lf->set_logline_observer(&this->ld_filter_state);
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};
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void clear(void)
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{
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this->ld_filter_state.lfo_filter_state.clear();
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};
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void set_file(logfile *lf) {
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this->ld_filter_state.lfo_filter_state.tfs_logfile = lf;
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lf->set_logline_observer(&this->ld_filter_state);
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};
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logfile *get_file() const { return this->ld_filter_state.lfo_filter_state.tfs_logfile; };
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size_t ld_file_index;
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line_filter_observer ld_filter_state;
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size_t ld_lines_indexed;
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struct {
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content_line_t ld_start;
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content_line_t ld_last;
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} ld_indexing;
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};
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typedef std::vector<logfile_data *>::iterator iterator;
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iterator begin()
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{
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return this->lss_files.begin();
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};
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iterator end()
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{
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return this->lss_files.end();
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};
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logfile_data *find_data(content_line_t line, uint64_t &offset_out)
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|
{
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|
logfile_data *retval;
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retval = this->lss_files[line / MAX_LINES_PER_FILE];
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|
offset_out = line % MAX_LINES_PER_FILE;
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return retval;
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};
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|
|
content_line_t get_file_base_content_line(iterator iter) {
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|
|
int index = std::distance(this->begin(), iter);
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|
|
return content_line_t(index * MAX_LINES_PER_FILE);
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};
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|
|
static const uint64_t MAX_CONTENT_LINES = (1ULL << 40) - 1;
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|
|
static const uint64_t MAX_LINES_PER_FILE = 256 * 1024 * 1024;
|
|
|
|
static const uint64_t MAX_FILES = (
|
|
|
|
MAX_CONTENT_LINES / MAX_LINES_PER_FILE);
|
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|
|
private:
|
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|
|
static const size_t LINE_SIZE_CACHE_SIZE = 512;
|
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|
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|
|
enum {
|
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|
|
B_SCRUB,
|
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|
|
B_TIME_OFFSET,
|
|
|
|
};
|
|
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|
|
|
enum {
|
|
|
|
F_SCRUB = (1L << B_SCRUB),
|
|
|
|
F_TIME_OFFSET = (1L << B_TIME_OFFSET),
|
|
|
|
};
|
|
|
|
|
|
|
|
struct __attribute__((__packed__)) indexed_content {
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|
|
|
indexed_content() {
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|
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
indexed_content(content_line_t cl) : ic_value(cl) {
|
|
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
operator content_line_t () const {
|
|
|
|
return content_line_t(this->ic_value);
|
|
|
|
};
|
|
|
|
|
|
|
|
uint64_t ic_value : 40;
|
|
|
|
};
|
|
|
|
|
|
|
|
struct logline_cmp {
|
|
|
|
logline_cmp(logfile_sub_source & lc)
|
|
|
|
: llss_controller(lc) { };
|
|
|
|
bool operator()(const content_line_t &lhs, const content_line_t &rhs) const
|
|
|
|
{
|
|
|
|
logline *ll_lhs = this->llss_controller.find_line(lhs);
|
|
|
|
logline *ll_rhs = this->llss_controller.find_line(rhs);
|
|
|
|
|
|
|
|
return (*ll_lhs) < (*ll_rhs);
|
|
|
|
};
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
bool operator()(const indexed_content &lhs, const indexed_content &rhs)
|
|
|
|
{
|
|
|
|
logline *ll_lhs = this->llss_controller.find_line(lhs.ic_value);
|
|
|
|
logline *ll_rhs = this->llss_controller.find_line(rhs.ic_value);
|
|
|
|
|
|
|
|
return (*ll_lhs) < (*ll_rhs);
|
|
|
|
};
|
|
|
|
#endif
|
|
|
|
bool operator()(const content_line_t &lhs, const time_t &rhs) const
|
|
|
|
{
|
|
|
|
logline *ll_lhs = this->llss_controller.find_line(lhs);
|
|
|
|
|
|
|
|
return *ll_lhs < rhs;
|
|
|
|
};
|
|
|
|
bool operator()(const content_line_t &lhs, const struct timeval &rhs) const
|
|
|
|
{
|
|
|
|
logline *ll_lhs = this->llss_controller.find_line(lhs);
|
|
|
|
|
|
|
|
return *ll_lhs < rhs;
|
|
|
|
};
|
|
|
|
|
|
|
|
logfile_sub_source & llss_controller;
|
|
|
|
};
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Functor for comparing the ld_file field of the logfile_data struct.
|
|
|
|
*/
|
|
|
|
struct logfile_data_eq {
|
|
|
|
logfile_data_eq(logfile *lf) : lde_file(lf) { };
|
|
|
|
|
|
|
|
bool operator()(const logfile_data *ld)
|
|
|
|
{
|
|
|
|
return this->lde_file == ld->get_file();
|
|
|
|
}
|
|
|
|
|
|
|
|
logfile *lde_file;
|
|
|
|
};
|
|
|
|
|
|
|
|
void clear_line_size_cache(void) {
|
|
|
|
memset(this->lss_line_size_cache, 0, sizeof(this->lss_line_size_cache));
|
|
|
|
this->lss_line_size_cache[0].first = -1;
|
|
|
|
};
|
|
|
|
|
|
|
|
unsigned long lss_flags;
|
|
|
|
std::vector<logfile_data *> lss_files;
|
|
|
|
|
|
|
|
int lss_filtered_count;
|
|
|
|
|
|
|
|
chunky_index<indexed_content> lss_index;
|
|
|
|
std::vector<uint32_t> lss_filtered_index;
|
|
|
|
|
|
|
|
bookmarks<content_line_t>::type lss_user_marks;
|
|
|
|
std::map<content_line_t, bookmark_metadata> lss_user_mark_metadata;
|
|
|
|
|
|
|
|
logfile * lss_token_file;
|
|
|
|
std::string lss_token_value;
|
|
|
|
shared_buffer lss_share_manager;
|
|
|
|
int lss_scrub_len;
|
|
|
|
int lss_token_offset;
|
|
|
|
int lss_token_date_end;
|
|
|
|
logfile::iterator lss_token_line;
|
|
|
|
std::pair<int, size_t> lss_line_size_cache[LINE_SIZE_CACHE_SIZE];
|
|
|
|
logline::level_t lss_min_log_level;
|
|
|
|
};
|
|
|
|
#endif
|