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Diffstat (limited to 'src/lnav.indexing.cc')
| -rw-r--r-- | src/lnav.indexing.cc | 441 |
1 files changed, 441 insertions, 0 deletions
diff --git a/src/lnav.indexing.cc b/src/lnav.indexing.cc new file mode 100644 index 0000000..d39c784 --- /dev/null +++ b/src/lnav.indexing.cc @@ -0,0 +1,441 @@ +/** + * Copyright (c) 2022, Timothy Stack + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * * Neither the name of Timothy Stack nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "lnav.indexing.hh" + +#include "lnav.events.hh" +#include "lnav.hh" +#include "service_tags.hh" +#include "session_data.hh" + +using namespace std::chrono_literals; + +/** + * Observer for loading progress that updates the bottom status bar. + */ +class loading_observer : public logfile_observer { +public: + loading_observer() : lo_last_offset(0){}; + + indexing_result logfile_indexing(const std::shared_ptr<logfile>& lf, + file_off_t off, + file_size_t total) override + { + static sig_atomic_t index_counter = 0; + + if (lnav_data.ld_window == nullptr) { + return indexing_result::CONTINUE; + } + + /* XXX require(off <= total); */ + if (off > (off_t) total) { + off = total; + } + + if ((((size_t) off == total) && (this->lo_last_offset != off)) + || ui_periodic_timer::singleton().time_to_update(index_counter)) + { + if (off == total) { + lnav_data.ld_bottom_source.update_loading(0, 0); + } else { + lnav_data.ld_bottom_source.update_loading(off, total); + } + do_observer_update(lf); + this->lo_last_offset = off; + } + + if (!lnav_data.ld_looping) { + return indexing_result::BREAK; + } + return indexing_result::CONTINUE; + } + + off_t lo_last_offset; +}; + +void +do_observer_update(const std::shared_ptr<logfile>& lf) +{ + if (isendwin()) { + return; + } + lnav_data.ld_status_refresher(); + if (lf && lnav_data.ld_mode == ln_mode_t::FILES + && !lnav_data.ld_initial_build) + { + auto& fc = lnav_data.ld_active_files; + auto iter = std::find(fc.fc_files.begin(), fc.fc_files.end(), lf); + + if (iter != fc.fc_files.end()) { + auto index = std::distance(fc.fc_files.begin(), iter); + lnav_data.ld_files_view.set_selection( + vis_line_t(fc.fc_other_files.size() + index)); + lnav_data.ld_files_view.reload_data(); + lnav_data.ld_files_view.do_update(); + } + } + if (handle_winch()) { + layout_views(); + lnav_data.ld_view_stack.do_update(); + } + refresh(); +} + +void +rebuild_hist() +{ + logfile_sub_source& lss = lnav_data.ld_log_source; + hist_source2& hs = lnav_data.ld_hist_source2; + int zoom = lnav_data.ld_zoom_level; + + hs.set_time_slice(ZOOM_LEVELS[zoom]); + lss.reload_index_delegate(); +} + +class textfile_callback : public textfile_sub_source::scan_callback { +public: + void closed_files( + const std::vector<std::shared_ptr<logfile>>& files) override + { + for (const auto& lf : files) { + log_info("closed text files: %s", lf->get_filename().c_str()); + } + lnav_data.ld_active_files.close_files(files); + } + + void promote_file(const std::shared_ptr<logfile>& lf) override + { + if (lnav_data.ld_log_source.insert_file(lf)) { + this->did_promotion = true; + log_info("promoting text file to log file: %s (%s)", + lf->get_filename().c_str(), + lf->get_content_id().c_str()); + auto format = lf->get_format(); + if (format->lf_is_self_describing) { + auto vt = format->get_vtab_impl(); + + if (vt != nullptr) { + lnav_data.ld_vtab_manager->register_vtab(vt); + } + } + + auto iter = session_data.sd_file_states.find(lf->get_filename()); + if (iter != session_data.sd_file_states.end()) { + log_info(" found visibility state for log file: %d", + iter->second.fs_is_visible); + + lnav_data.ld_log_source.find_data(lf) | [&iter](auto ld) { + ld->set_visibility(iter->second.fs_is_visible); + }; + } + + lnav::events::publish(lnav_data.ld_db.in(), + lnav::events::file::format_detected{ + lf->get_filename(), + lf->get_format_name().to_string(), + }); + } else { + this->closed_files({lf}); + } + } + + void scanned_file(const std::shared_ptr<logfile>& lf) override + { + if (!lnav_data.ld_files_to_front.empty() + && lnav_data.ld_files_to_front.front().first == lf->get_filename()) + { + this->front_file = lf; + this->front_top = lnav_data.ld_files_to_front.front().second; + + lnav_data.ld_files_to_front.pop_front(); + } + } + + std::shared_ptr<logfile> front_file; + file_location_t front_top; + bool did_promotion{false}; +}; + +size_t +rebuild_indexes(nonstd::optional<ui_clock::time_point> deadline) +{ + logfile_sub_source& lss = lnav_data.ld_log_source; + textview_curses& log_view = lnav_data.ld_views[LNV_LOG]; + textview_curses& text_view = lnav_data.ld_views[LNV_TEXT]; + vis_line_t old_bottoms[LNV__MAX]; + bool scroll_downs[LNV__MAX]; + size_t retval = 0; + + for (int lpc = 0; lpc < LNV__MAX; lpc++) { + old_bottoms[lpc] = lnav_data.ld_views[lpc].get_top_for_last_row(); + scroll_downs[lpc] + = (lnav_data.ld_views[lpc].get_top() >= old_bottoms[lpc]) + && !(lnav_data.ld_flags & LNF_HEADLESS); + } + + { + auto* tss = &lnav_data.ld_text_source; + textfile_callback cb; + + if (tss->rescan_files(cb, deadline)) { + text_view.reload_data(); + retval += 1; + } + + if (cb.front_file != nullptr) { + ensure_view(&text_view); + + if (tss->current_file() != cb.front_file) { + tss->to_front(cb.front_file); + old_bottoms[LNV_TEXT] = -1_vl; + } + + nonstd::optional<vis_line_t> new_top_opt; + cb.front_top.match( + [&new_top_opt](vis_line_t vl) { + log_info("file open request to jump to line: %d", (int) vl); + if (vl < 0_vl) { + vl += lnav_data.ld_views[LNV_TEXT].get_inner_height(); + } + if (vl < lnav_data.ld_views[LNV_TEXT].get_inner_height()) { + new_top_opt = vl; + } + }, + [&new_top_opt](const std::string& loc) { + log_info("file open request to jump to anchor: %s", + loc.c_str()); + auto* ta = dynamic_cast<text_anchors*>( + lnav_data.ld_views[LNV_TEXT].get_sub_source()); + + if (ta != nullptr) { + new_top_opt = ta->row_for_anchor(loc); + } + }); + if (new_top_opt) { + log_info(" setting requested top line: %d", + (int) new_top_opt.value()); + text_view.set_top(new_top_opt.value()); + log_info(" actual top is now: %d", (int) text_view.get_top()); + scroll_downs[LNV_TEXT] = false; + } else { + log_warning("could not jump to requested line"); + } + } + if (cb.did_promotion && deadline) { + // If there's a new log file, extend the deadline so it can be + // indexed quickly. + deadline = deadline.value() + 500ms; + } + } + + std::vector<std::shared_ptr<logfile>> closed_files; + for (auto& lf : lnav_data.ld_active_files.fc_files) { + if ((!lf->exists() || lf->is_closed())) { + log_info("closed log file: %s", lf->get_filename().c_str()); + lnav_data.ld_text_source.remove(lf); + lnav_data.ld_log_source.remove_file(lf); + closed_files.emplace_back(lf); + } + } + if (!closed_files.empty()) { + lnav_data.ld_active_files.close_files(closed_files); + } + + auto result = lss.rebuild_index(deadline); + if (result != logfile_sub_source::rebuild_result::rr_no_change) { + size_t new_count = lss.text_line_count(); + bool force + = result == logfile_sub_source::rebuild_result::rr_full_rebuild; + + if ((!scroll_downs[LNV_LOG] + || log_view.get_top() > vis_line_t(new_count)) + && force) + { + scroll_downs[LNV_LOG] = false; + } + + log_view.reload_data(); + + { + std::unordered_map<std::string, std::list<std::shared_ptr<logfile>>> + id_to_files; + bool reload = false; + + for (const auto& lf : lnav_data.ld_active_files.fc_files) { + id_to_files[lf->get_content_id()].push_back(lf); + } + + for (auto& pair : id_to_files) { + if (pair.second.size() == 1) { + continue; + } + + pair.second.sort([](const auto& left, const auto& right) { + return right->get_stat().st_size < left->get_stat().st_size; + }); + + auto dupe_name = pair.second.front()->get_unique_path(); + pair.second.pop_front(); + for_each(pair.second.begin(), + pair.second.end(), + [&dupe_name](auto& lf) { + log_info("Hiding duplicate file: %s", + lf->get_filename().c_str()); + lf->mark_as_duplicate(dupe_name); + lnav_data.ld_log_source.find_data(lf) | + [](auto ld) { ld->set_visibility(false); }; + }); + reload = true; + } + + if (reload) { + lss.text_filters_changed(); + } + } + + retval += 1; + } + + for (int lpc = 0; lpc < LNV__MAX; lpc++) { + textview_curses& scroll_view = lnav_data.ld_views[lpc]; + + if (scroll_downs[lpc] + && scroll_view.get_top_for_last_row() > scroll_view.get_top()) + { + scroll_view.set_top(scroll_view.get_top_for_last_row()); + } + } + + lnav_data.ld_view_stack.top() | [](auto tc) { + lnav_data.ld_filter_status_source.update_filtered(tc->get_sub_source()); + lnav_data.ld_scroll_broadcaster(tc); + }; + + return retval; +} + +void +rebuild_indexes_repeatedly() +{ + for (size_t attempt = 0; attempt < 10 && rebuild_indexes() > 0; attempt++) { + log_info("continuing to rebuild indexes..."); + } +} + +bool +update_active_files(file_collection& new_files) +{ + static loading_observer obs; + + if (lnav_data.ld_active_files.fc_invalidate_merge) { + lnav_data.ld_active_files.fc_invalidate_merge = false; + + return true; + } + + for (const auto& lf : new_files.fc_files) { + lf->set_logfile_observer(&obs); + lnav_data.ld_text_source.push_back(lf); + } + for (const auto& other_pair : new_files.fc_other_files) { + switch (other_pair.second.ofd_format) { + case file_format_t::SQLITE_DB: + attach_sqlite_db(lnav_data.ld_db.in(), other_pair.first); + break; + default: + break; + } + } + lnav_data.ld_active_files.merge(new_files); + if (!new_files.fc_files.empty() || !new_files.fc_other_files.empty() + || !new_files.fc_name_to_errors.empty()) + { + lnav_data.ld_active_files.regenerate_unique_file_names(); + } + lnav_data.ld_child_pollers.insert( + lnav_data.ld_child_pollers.begin(), + std::make_move_iterator( + lnav_data.ld_active_files.fc_child_pollers.begin()), + std::make_move_iterator( + lnav_data.ld_active_files.fc_child_pollers.end())); + lnav_data.ld_active_files.fc_child_pollers.clear(); + + lnav::events::publish( + lnav_data.ld_db.in(), new_files.fc_files, [](const auto& lf) { + return lnav::events::file::open{ + lf->get_filename(), + }; + }); + + return true; +} + +bool +rescan_files(bool req) +{ + auto& mlooper = injector::get<main_looper&, services::main_t>(); + bool done = false; + auto delay = 0ms; + + do { + auto fc = lnav_data.ld_active_files.rescan_files(req); + bool all_synced = true; + + update_active_files(fc); + mlooper.get_port().process_for(delay); + for (const auto& pair : lnav_data.ld_active_files.fc_other_files) { + if (pair.second.ofd_format != file_format_t::REMOTE) { + continue; + } + + if (lnav_data.ld_active_files.fc_name_to_errors.count(pair.first)) { + continue; + } + + if (lnav_data.ld_active_files.fc_synced_files.count(pair.first) + == 0) + { + all_synced = false; + } + } + if (!lnav_data.ld_active_files.fc_name_to_errors.empty()) { + return false; + } + if (!all_synced) { + delay = 30ms; + } + done = fc.fc_file_names.empty() && all_synced; + if (!done && !(lnav_data.ld_flags & LNF_HEADLESS)) { + lnav_data.ld_files_view.set_needs_update(); + lnav_data.ld_files_view.do_update(); + lnav_data.ld_status_refresher(); + } + } while (!done && lnav_data.ld_looping); + return true; +} |