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Diffstat (limited to 'src/session_data.cc')
| -rw-r--r-- | src/session_data.cc | 1824 |
1 files changed, 1824 insertions, 0 deletions
diff --git a/src/session_data.cc b/src/session_data.cc new file mode 100644 index 0000000..acc0f7c --- /dev/null +++ b/src/session_data.cc @@ -0,0 +1,1824 @@ +/** + * Copyright (c) 2013, 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. + * + * @file session_data.cc + */ + +#include <algorithm> +#include <utility> + +#include "session_data.hh" + +#include <fcntl.h> +#include <glob.h> +#include <stdio.h> +#include <sys/types.h> +#include <yajl/api/yajl_tree.h> + +#include "base/fs_util.hh" +#include "base/isc.hh" +#include "base/opt_util.hh" +#include "base/paths.hh" +#include "command_executor.hh" +#include "config.h" +#include "lnav.events.hh" +#include "lnav.hh" +#include "lnav_util.hh" +#include "log_format_ext.hh" +#include "logfile.hh" +#include "service_tags.hh" +#include "sql_util.hh" +#include "sqlitepp.client.hh" +#include "tailer/tailer.looper.hh" +#include "vtab_module.hh" +#include "yajlpp/yajlpp.hh" +#include "yajlpp/yajlpp_def.hh" + +struct session_data_t session_data; + +static const char* LOG_METADATA_NAME = "log_metadata.db"; + +static const char* META_TABLE_DEF = R"( +CREATE TABLE IF NOT EXISTS bookmarks ( + log_time datetime, + log_format varchar(64), + log_hash varchar(128), + session_time integer, + part_name text, + access_time datetime DEFAULT CURRENT_TIMESTAMP, + comment text DEFAULT '', + tags text DEFAULT '', + + PRIMARY KEY (log_time, log_format, log_hash, session_time) +); + +CREATE TABLE IF NOT EXISTS time_offset ( + log_time datetime, + log_format varchar(64), + log_hash varchar(128), + session_time integer, + offset_sec integer, + offset_usec integer, + access_time datetime DEFAULT CURRENT_TIMESTAMP, + + PRIMARY KEY (log_time, log_format, log_hash, session_time) +); + +CREATE TABLE IF NOT EXISTS recent_netlocs ( + netloc text, + + access_time datetime DEFAULT CURRENT_TIMESTAMP, + + PRIMARY KEY (netloc) +); + +CREATE TABLE IF NOT EXISTS regex101_entries ( + format_name text NOT NULL, + regex_name text NOT NULL, + permalink text NOT NULL, + delete_code text NOT NULL, + + PRIMARY KEY (format_name, regex_name), + + CHECK( + format_name <> '' AND + regex_name <> '' AND + permalink <> '') +); +)"; + +static const char* BOOKMARK_LRU_STMT + = "DELETE FROM bookmarks WHERE access_time <= " + " (SELECT access_time FROM bookmarks " + " ORDER BY access_time DESC LIMIT 1 OFFSET 50000)"; + +static const char* NETLOC_LRU_STMT + = "DELETE FROM recent_netlocs WHERE access_time <= " + " (SELECT access_time FROM bookmarks " + " ORDER BY access_time DESC LIMIT 1 OFFSET 10)"; + +static const char* UPGRADE_STMTS[] = { + R"(ALTER TABLE bookmarks ADD COLUMN comment text DEFAULT '';)", + R"(ALTER TABLE bookmarks ADD COLUMN tags text DEFAULT '';)", +}; + +static const size_t MAX_SESSIONS = 8; +static const size_t MAX_SESSION_FILE_COUNT = 256; + +static std::vector<content_line_t> marked_session_lines; +static std::vector<content_line_t> offset_session_lines; + +static bool +bind_line(sqlite3* db, + sqlite3_stmt* stmt, + content_line_t cl, + time_t session_time) +{ + logfile_sub_source& lss = lnav_data.ld_log_source; + auto lf = lss.find(cl); + + if (lf == nullptr) { + return false; + } + + sqlite3_clear_bindings(stmt); + + auto line_iter = lf->begin() + cl; + auto read_result = lf->read_line(line_iter); + + if (read_result.isErr()) { + return false; + } + + auto line_hash = read_result + .map([cl](auto sbr) { + return hasher() + .update(sbr.get_data(), sbr.length()) + .update(cl) + .to_string(); + }) + .unwrap(); + + return bind_values(stmt, + lf->original_line_time(line_iter), + lf->get_format()->get_name(), + line_hash, + session_time) + == SQLITE_OK; +} + +struct session_file_info { + session_file_info(int timestamp, std::string id, std::string path) + : sfi_timestamp(timestamp), sfi_id(std::move(id)), + sfi_path(std::move(path)){}; + + bool operator<(const session_file_info& other) const + { + if (this->sfi_timestamp < other.sfi_timestamp) { + return true; + } + if (this->sfi_path < other.sfi_path) { + return true; + } + return false; + }; + + int sfi_timestamp; + std::string sfi_id; + std::string sfi_path; +}; + +static void +cleanup_session_data() +{ + static_root_mem<glob_t, globfree> session_file_list; + std::list<struct session_file_info> session_info_list; + std::map<std::string, int> session_count; + auto session_file_pattern = lnav::paths::dotlnav() / "*-*.ts*.json"; + + if (glob( + session_file_pattern.c_str(), 0, nullptr, session_file_list.inout()) + == 0) + { + for (size_t lpc = 0; lpc < session_file_list->gl_pathc; lpc++) { + const char* path = session_file_list->gl_pathv[lpc]; + char hash_id[64]; + int timestamp; + const char* base; + + base = strrchr(path, '/'); + if (base == nullptr) { + continue; + } + base += 1; + if (sscanf(base, "file-%63[^.].ts%d.json", hash_id, ×tamp) + == 2) + { + session_count[hash_id] += 1; + session_info_list.emplace_back(timestamp, hash_id, path); + } + if (sscanf(base, + "view-info-%63[^.].ts%d.ppid%*d.json", + hash_id, + ×tamp) + == 2) + { + session_count[hash_id] += 1; + session_info_list.emplace_back(timestamp, hash_id, path); + } + } + } + + session_info_list.sort(); + + size_t session_loops = 0; + + while (session_info_list.size() > MAX_SESSION_FILE_COUNT) { + const session_file_info& front = session_info_list.front(); + + session_loops += 1; + if (session_loops < MAX_SESSION_FILE_COUNT + && session_count[front.sfi_id] == 1) + { + session_info_list.splice(session_info_list.end(), + session_info_list, + session_info_list.begin()); + } else { + if (remove(front.sfi_path.c_str()) != 0) { + log_error("Unable to remove session file: %s -- %s", + front.sfi_path.c_str(), + strerror(errno)); + } + session_count[front.sfi_id] -= 1; + session_info_list.pop_front(); + } + } + + session_info_list.sort(); + + while (session_info_list.size() > MAX_SESSION_FILE_COUNT) { + const session_file_info& front = session_info_list.front(); + + if (remove(front.sfi_path.c_str()) != 0) { + log_error("Unable to remove session file: %s -- %s", + front.sfi_path.c_str(), + strerror(errno)); + } + session_count[front.sfi_id] -= 1; + session_info_list.pop_front(); + } +} + +void +init_session() +{ + lnav_data.ld_session_time = time(nullptr); + lnav_data.ld_session_id.clear(); +} + +static nonstd::optional<std::string> +compute_session_id() +{ + bool has_files = false; + hasher h; + + for (auto& ld_file_name : lnav_data.ld_active_files.fc_file_names) { + if (!ld_file_name.second.loo_include_in_session) { + continue; + } + has_files = true; + h.update(ld_file_name.first); + } + if (!has_files) { + return nonstd::nullopt; + } + + return h.to_string(); +} + +nonstd::optional<session_pair_t> +scan_sessions() +{ + static_root_mem<glob_t, globfree> view_info_list; + + cleanup_session_data(); + + const auto session_id = compute_session_id(); + if (!session_id) { + return nonstd::nullopt; + } + std::list<session_pair_t>& session_file_names + = lnav_data.ld_session_id[session_id.value()]; + + session_file_names.clear(); + + auto view_info_pattern_base + = fmt::format(FMT_STRING("view-info-{}.*.json"), session_id.value()); + auto view_info_pattern = lnav::paths::dotlnav() / view_info_pattern_base; + if (glob(view_info_pattern.c_str(), 0, nullptr, view_info_list.inout()) + == 0) + { + for (size_t lpc = 0; lpc < view_info_list->gl_pathc; lpc++) { + const char* path = view_info_list->gl_pathv[lpc]; + int timestamp, ppid, rc; + const char* base; + + base = strrchr(path, '/'); + if (base == nullptr) { + continue; + } + base += 1; + if ((rc = sscanf(base, + "view-info-%*[^.].ts%d.ppid%d.json", + ×tamp, + &ppid)) + == 2) + { + ppid_time_pair_t ptp; + + ptp.first = (ppid == getppid()) ? 1 : 0; + ptp.second = timestamp; + session_file_names.emplace_back(ptp, path); + } + } + } + + session_file_names.sort(); + + while (session_file_names.size() > MAX_SESSIONS) { + const std::string& name = session_file_names.front().second; + + if (remove(name.c_str()) != 0) { + log_error("Unable to remove session: %s -- %s", + name.c_str(), + strerror(errno)); + } + session_file_names.pop_front(); + } + + if (session_file_names.empty()) { + return nonstd::nullopt; + } + + return nonstd::make_optional(session_file_names.back()); +} + +void +load_time_bookmarks() +{ + logfile_sub_source& lss = lnav_data.ld_log_source; + auto_sqlite3 db; + auto db_path = lnav::paths::dotlnav() / LOG_METADATA_NAME; + auto_mem<sqlite3_stmt> stmt(sqlite3_finalize); + logfile_sub_source::iterator file_iter; + bool reload_needed = false; + auto_mem<char, sqlite3_free> errmsg; + + log_info("loading bookmark db: %s", db_path.c_str()); + + if (sqlite3_open(db_path.c_str(), db.out()) != SQLITE_OK) { + return; + } + + for (const char* upgrade_stmt : UPGRADE_STMTS) { + auto rc = sqlite3_exec( + db.in(), upgrade_stmt, nullptr, nullptr, errmsg.out()); + if (rc != SQLITE_OK) { + auto exterr = sqlite3_extended_errcode(db.in()); + log_error("unable to upgrade bookmark table -- (%d/%d) %s", + rc, + exterr, + errmsg.in()); + } + } + + { + auto netloc_prep_res + = prepare_stmt(db.in(), "SELECT netloc FROM recent_netlocs"); + if (netloc_prep_res.isErr()) { + log_error("unable to get netlocs: %s", + netloc_prep_res.unwrapErr().c_str()); + return; + } + + auto netloc_stmt = netloc_prep_res.unwrap(); + bool done = false; + + while (!done) { + done = netloc_stmt.fetch_row<std::string>().match( + [](const std::string& netloc) { + session_data.sd_recent_netlocs.insert(netloc); + return false; + }, + [](const prepared_stmt::fetch_error& fe) { + log_error("failed to fetch netloc row: %s", + fe.fe_msg.c_str()); + return true; + }, + [](prepared_stmt::end_of_rows) { return true; }); + } + } + + if (sqlite3_prepare_v2( + db.in(), + "SELECT log_time, log_format, log_hash, session_time, part_name, " + "access_time, comment," + " tags, session_time=? as same_session FROM bookmarks WHERE " + " log_time between ? and ? and log_format = ? " + " ORDER BY same_session DESC, session_time DESC", + -1, + stmt.out(), + nullptr) + != SQLITE_OK) + { + log_error("could not prepare bookmark select statement -- %s", + sqlite3_errmsg(db)); + return; + } + + for (file_iter = lnav_data.ld_log_source.begin(); + file_iter != lnav_data.ld_log_source.end(); + ++file_iter) + { + auto lf = (*file_iter)->get_file(); + content_line_t base_content_line; + + if (lf == nullptr) { + continue; + } + + base_content_line = lss.get_file_base_content_line(file_iter); + + auto low_line_iter = lf->begin(); + auto high_line_iter = lf->end(); + + --high_line_iter; + + if (bind_values(stmt.in(), + lnav_data.ld_session_load_time, + lf->original_line_time(low_line_iter), + lf->original_line_time(high_line_iter), + lf->get_format()->get_name()) + != SQLITE_OK) + { + return; + } + + date_time_scanner dts; + bool done = false; + std::string line; + int64_t last_mark_time = -1; + + while (!done) { + int rc = sqlite3_step(stmt.in()); + + switch (rc) { + case SQLITE_OK: + case SQLITE_DONE: + done = true; + break; + + case SQLITE_ROW: { + const char* log_time + = (const char*) sqlite3_column_text(stmt.in(), 0); + const char* log_hash + = (const char*) sqlite3_column_text(stmt.in(), 2); + const char* part_name + = (const char*) sqlite3_column_text(stmt.in(), 4); + const char* comment + = (const char*) sqlite3_column_text(stmt.in(), 6); + const char* tags + = (const char*) sqlite3_column_text(stmt.in(), 7); + int64_t mark_time = sqlite3_column_int64(stmt.in(), 3); + struct timeval log_tv; + struct exttm log_tm; + + if (last_mark_time == -1) { + last_mark_time = mark_time; + } else if (last_mark_time != mark_time) { + done = true; + continue; + } + + if (part_name == nullptr) { + continue; + } + + if (!dts.scan( + log_time, strlen(log_time), NULL, &log_tm, log_tv)) + { + continue; + } + + auto line_iter + = lower_bound(lf->begin(), lf->end(), log_tv); + while (line_iter != lf->end()) { + struct timeval line_tv = line_iter->get_timeval(); + + if ((line_tv.tv_sec != log_tv.tv_sec) + || (line_tv.tv_usec != log_tv.tv_usec)) + { + break; + } + + auto cl = content_line_t( + std::distance(lf->begin(), line_iter)); + auto read_result = lf->read_line(line_iter); + + if (read_result.isErr()) { + break; + } + + auto sbr = read_result.unwrap(); + + auto line_hash + = hasher() + .update(sbr.get_data(), sbr.length()) + .update(cl) + .to_string(); + + if (line_hash == log_hash) { + auto& bm_meta = lf->get_bookmark_metadata(); + auto line_number = static_cast<uint32_t>( + std::distance(lf->begin(), line_iter)); + content_line_t line_cl = content_line_t( + base_content_line + line_number); + bool meta = false; + + if (part_name != nullptr && part_name[0] != '\0') { + lss.set_user_mark(&textview_curses::BM_META, + line_cl); + bm_meta[line_number].bm_name = part_name; + meta = true; + } + if (comment != nullptr && comment[0] != '\0') { + lss.set_user_mark(&textview_curses::BM_META, + line_cl); + bm_meta[line_number].bm_comment = comment; + meta = true; + } + if (tags != nullptr && tags[0] != '\0') { + auto_mem<yajl_val_s> tag_list(yajl_tree_free); + char error_buffer[1024]; + + tag_list = yajl_tree_parse( + tags, error_buffer, sizeof(error_buffer)); + if (!YAJL_IS_ARRAY(tag_list.in())) { + log_error("invalid tags column: %s", tags); + } else { + lss.set_user_mark(&textview_curses::BM_META, + line_cl); + for (size_t lpc = 0; + lpc < tag_list.in()->u.array.len; + lpc++) + { + yajl_val elem + = tag_list.in() + ->u.array.values[lpc]; + + if (!YAJL_IS_STRING(elem)) { + continue; + } + bookmark_metadata::KNOWN_TAGS.insert( + elem->u.string); + bm_meta[line_number].add_tag( + elem->u.string); + } + } + meta = true; + } + if (!meta) { + marked_session_lines.push_back(line_cl); + lss.set_user_mark(&textview_curses::BM_USER, + line_cl); + } + reload_needed = true; + } + + ++line_iter; + } + break; + } + + default: { + const char* errmsg; + + errmsg = sqlite3_errmsg(lnav_data.ld_db); + log_error( + "bookmark select error: code %d -- %s", rc, errmsg); + done = true; + } break; + } + } + + sqlite3_reset(stmt.in()); + } + + if (sqlite3_prepare_v2( + db.in(), + "SELECT *,session_time=? as same_session FROM time_offset WHERE " + " log_time between ? and ? and log_format = ? " + " ORDER BY same_session DESC, session_time DESC", + -1, + stmt.out(), + nullptr) + != SQLITE_OK) + { + log_error("could not prepare time_offset select statement -- %s", + sqlite3_errmsg(db)); + return; + } + + for (file_iter = lnav_data.ld_log_source.begin(); + file_iter != lnav_data.ld_log_source.end(); + ++file_iter) + { + auto lf = (*file_iter)->get_file(); + content_line_t base_content_line; + + if (lf == nullptr) { + continue; + } + + lss.find(lf->get_filename().c_str(), base_content_line); + + auto low_line_iter = lf->begin(); + auto high_line_iter = lf->end(); + + --high_line_iter; + + if (bind_values(stmt.in(), + lnav_data.ld_session_load_time, + lf->original_line_time(low_line_iter), + lf->original_line_time(high_line_iter), + lf->get_format()->get_name()) + != SQLITE_OK) + { + return; + } + + date_time_scanner dts; + bool done = false; + std::string line; + int64_t last_mark_time = -1; + + while (!done) { + int rc = sqlite3_step(stmt.in()); + + switch (rc) { + case SQLITE_OK: + case SQLITE_DONE: + done = true; + break; + + case SQLITE_ROW: { + const char* log_time + = (const char*) sqlite3_column_text(stmt.in(), 0); + const char* log_hash + = (const char*) sqlite3_column_text(stmt.in(), 2); + int64_t mark_time = sqlite3_column_int64(stmt.in(), 3); + struct timeval log_tv; + struct exttm log_tm; + + if (last_mark_time == -1) { + last_mark_time = mark_time; + } else if (last_mark_time != mark_time) { + done = true; + continue; + } + + if (sqlite3_column_type(stmt.in(), 4) == SQLITE_NULL) { + continue; + } + + if (!dts.scan(log_time, + strlen(log_time), + nullptr, + &log_tm, + log_tv)) + { + continue; + } + + auto line_iter + = lower_bound(lf->begin(), lf->end(), log_tv); + while (line_iter != lf->end()) { + struct timeval line_tv = line_iter->get_timeval(); + + if ((line_tv.tv_sec != log_tv.tv_sec) + || (line_tv.tv_usec != log_tv.tv_usec)) + { + break; + } + + if (lf->get_content_id() == log_hash) { + int file_line + = std::distance(lf->begin(), line_iter); + content_line_t line_cl + = content_line_t(base_content_line + file_line); + struct timeval offset; + + offset_session_lines.push_back(line_cl); + offset.tv_sec = sqlite3_column_int64(stmt.in(), 4); + offset.tv_usec = sqlite3_column_int64(stmt.in(), 5); + lf->adjust_content_time(file_line, offset); + + reload_needed = true; + } + + ++line_iter; + } + break; + } + + default: { + const char* errmsg; + + errmsg = sqlite3_errmsg(lnav_data.ld_db); + log_error( + "bookmark select error: code %d -- %s", rc, errmsg); + done = true; + } break; + } + } + + sqlite3_reset(stmt.in()); + } + + if (reload_needed) { + lnav_data.ld_views[LNV_LOG].reload_data(); + } +} + +static int +read_files(yajlpp_parse_context* ypc, const unsigned char* str, size_t len) +{ + return 1; +} + +static int +read_current_search(yajlpp_parse_context* ypc, + const unsigned char* str, + size_t len) +{ + const auto regex = std::string((const char*) str, len); + const char** view_name; + int view_index; + + view_name = find(lnav_view_strings, + lnav_view_strings + LNV__MAX, + ypc->get_path_fragment(-2)); + view_index = view_name - lnav_view_strings; + + if (view_index < LNV__MAX && !regex.empty()) { + lnav_data.ld_views[view_index].execute_search(regex); + lnav_data.ld_views[view_index].set_follow_search_for(-1, {}); + } + + return 1; +} + +static int +read_top_line(yajlpp_parse_context* ypc, long long value) +{ + const char** view_name; + int view_index; + + view_name = find(lnav_view_strings, + lnav_view_strings + LNV__MAX, + ypc->get_path_fragment(-2)); + view_index = view_name - lnav_view_strings; + if (view_index < LNV__MAX) { + session_data.sd_view_states[view_index].vs_top = value; + } + + return 1; +} + +static int +read_word_wrap(yajlpp_parse_context* ypc, int value) +{ + const char** view_name; + int view_index; + + view_name = find(lnav_view_strings, + lnav_view_strings + LNV__MAX, + ypc->get_path_fragment(-2)); + view_index = view_name - lnav_view_strings; + if (view_index == LNV_HELP) { + } else if (view_index < LNV__MAX) { + textview_curses& tc = lnav_data.ld_views[view_index]; + + tc.set_word_wrap(value); + } + + return 1; +} + +static int +read_filtering(yajlpp_parse_context* ypc, int value) +{ + const char** view_name; + int view_index; + + view_name = find(lnav_view_strings, + lnav_view_strings + LNV__MAX, + ypc->get_path_fragment(-2)); + view_index = view_name - lnav_view_strings; + if (view_index == LNV_HELP) { + } else if (view_index < LNV__MAX) { + textview_curses& tc = lnav_data.ld_views[view_index]; + + if (tc.get_sub_source() != nullptr) { + tc.get_sub_source()->tss_apply_filters = value; + } + } + + return 1; +} + +static int +read_commands(yajlpp_parse_context* ypc, const unsigned char* str, size_t len) +{ + std::string cmdline = std::string((const char*) str, len); + const char** view_name; + int view_index; + + view_name = find(lnav_view_strings, + lnav_view_strings + LNV__MAX, + ypc->get_path_fragment(-3)); + view_index = view_name - lnav_view_strings; + bool active = ensure_view(&lnav_data.ld_views[view_index]); + execute_command(lnav_data.ld_exec_context, cmdline); + if (!active) { + lnav_data.ld_view_stack.pop_back(); + } + + return 1; +} + +static const struct json_path_container view_def_handlers = { + json_path_handler("top_line", read_top_line), + json_path_handler("search", read_current_search), + json_path_handler("word_wrap", read_word_wrap), + json_path_handler("filtering", read_filtering), + json_path_handler("commands#", read_commands), +}; + +static const struct json_path_container view_handlers = { + yajlpp::pattern_property_handler("([^/]+)").with_children( + view_def_handlers), +}; + +static const struct json_path_container file_state_handlers = { + yajlpp::property_handler("visible") + .with_description("Indicates whether the file is visible or not") + .for_field(&file_state::fs_is_visible), +}; + +static const struct json_path_container file_states_handlers = { + yajlpp::pattern_property_handler(R"((?<filename>[^/]+))") + .with_description("Map of file names to file state objects") + .with_obj_provider<file_state, void>([](const auto& ypc, auto* root) { + auto fn = ypc.get_substr("filename"); + return &session_data.sd_file_states[fn]; + }) + .with_children(file_state_handlers), +}; + +static const struct json_path_container view_info_handlers = { + yajlpp::property_handler("save-time") + .for_field(&session_data_t::sd_save_time), + yajlpp::property_handler("time-offset") + .for_field(&session_data_t::sd_time_offset), + json_path_handler("files#", read_files), + yajlpp::property_handler("file-states").with_children(file_states_handlers), + yajlpp::property_handler("views").with_children(view_handlers), +}; + +void +load_session() +{ + load_time_bookmarks(); + scan_sessions() | [](const auto pair) { + yajl_handle handle; + auto_fd fd; + + lnav_data.ld_session_load_time = pair.first.second; + session_data.sd_save_time = pair.first.second; + const auto& view_info_path = pair.second; + + yajlpp_parse_context ypc(intern_string::lookup(view_info_path.string()), + &view_info_handlers); + ypc.with_obj(session_data); + handle = yajl_alloc(&ypc.ypc_callbacks, nullptr, &ypc); + + load_time_bookmarks(); + + if ((fd = lnav::filesystem::openp(view_info_path, O_RDONLY)) < 0) { + perror("cannot open session file"); + } else { + unsigned char buffer[1024]; + ssize_t rc; + + log_info("loading session file: %s", view_info_path.c_str()); + while ((rc = read(fd, buffer, sizeof(buffer))) > 0) { + yajl_parse(handle, buffer, rc); + } + yajl_complete_parse(handle); + } + yajl_free(handle); + + bool log_changes = false, text_changes = false; + + for (auto& lf : lnav_data.ld_active_files.fc_files) { + auto iter = session_data.sd_file_states.find(lf->get_filename()); + + if (iter == session_data.sd_file_states.end()) { + continue; + } + + log_debug("found state for file: %s %d", + lf->get_content_id().c_str(), + iter->second.fs_is_visible); + lnav_data.ld_log_source.find_data(lf) | [iter](auto ld) { + ld->set_visibility(iter->second.fs_is_visible); + }; + if (!iter->second.fs_is_visible) { + if (lf->get_format() != nullptr) { + log_changes = true; + } else { + text_changes = true; + } + } + } + + if (log_changes) { + lnav_data.ld_log_source.text_filters_changed(); + } + if (text_changes) { + lnav_data.ld_text_source.text_filters_changed(); + } + }; + + lnav::events::publish(lnav_data.ld_db.in(), + lnav::events::session::loaded{}); +} + +static void +yajl_writer(void* context, const char* str, size_t len) +{ + FILE* file = (FILE*) context; + + fwrite(str, len, 1, file); +} + +static void +save_user_bookmarks(sqlite3* db, + sqlite3_stmt* stmt, + bookmark_vector<content_line_t>& user_marks) +{ + logfile_sub_source& lss = lnav_data.ld_log_source; + bookmark_vector<content_line_t>::iterator iter; + + for (iter = user_marks.begin(); iter != user_marks.end(); ++iter) { + content_line_t cl = *iter; + auto line_meta_opt = lss.find_bookmark_metadata(cl); + if (!bind_line(db, stmt, cl, lnav_data.ld_session_time)) { + continue; + } + + if (!line_meta_opt) { + if (sqlite3_bind_text(stmt, 5, "", 0, SQLITE_TRANSIENT) + != SQLITE_OK) + { + log_error("could not bind log hash -- %s", sqlite3_errmsg(db)); + return; + } + } else { + bookmark_metadata& line_meta = *(line_meta_opt.value()); + if (line_meta.empty()) { + continue; + } + + if (sqlite3_bind_text(stmt, + 5, + line_meta.bm_name.c_str(), + line_meta.bm_name.length(), + SQLITE_TRANSIENT) + != SQLITE_OK) + { + log_error("could not bind part name -- %s", sqlite3_errmsg(db)); + return; + } + + if (sqlite3_bind_text(stmt, + 6, + line_meta.bm_comment.c_str(), + line_meta.bm_comment.length(), + SQLITE_TRANSIENT) + != SQLITE_OK) + { + log_error("could not bind comment -- %s", sqlite3_errmsg(db)); + return; + } + + std::string tags; + + if (!line_meta.bm_tags.empty()) { + yajlpp_gen gen; + + yajl_gen_config(gen, yajl_gen_beautify, false); + + { + yajlpp_array arr(gen); + + for (const auto& str : line_meta.bm_tags) { + arr.gen(str); + } + } + + tags = gen.to_string_fragment().to_string(); + } + + if (sqlite3_bind_text( + stmt, 7, tags.c_str(), tags.length(), SQLITE_TRANSIENT) + != SQLITE_OK) + { + log_error("could not bind tags -- %s", sqlite3_errmsg(db)); + return; + } + } + + if (sqlite3_step(stmt) != SQLITE_DONE) { + log_error("could not execute bookmark insert statement -- %s", + sqlite3_errmsg(db)); + return; + } + + marked_session_lines.push_back(cl); + + sqlite3_reset(stmt); + } +} + +static void +save_time_bookmarks() +{ + auto_sqlite3 db; + auto db_path = lnav::paths::dotlnav() / LOG_METADATA_NAME; + auto_mem<char, sqlite3_free> errmsg; + auto_mem<sqlite3_stmt> stmt(sqlite3_finalize); + + if (sqlite3_open(db_path.c_str(), db.out()) != SQLITE_OK) { + log_error("unable to open bookmark DB -- %s", db_path.c_str()); + return; + } + + if (sqlite3_exec(db.in(), META_TABLE_DEF, nullptr, nullptr, errmsg.out()) + != SQLITE_OK) + { + log_error("unable to make bookmark table -- %s", errmsg.in()); + return; + } + + if (sqlite3_exec( + db.in(), "BEGIN TRANSACTION", nullptr, nullptr, errmsg.out()) + != SQLITE_OK) + { + log_error("unable to begin transaction -- %s", errmsg.in()); + return; + } + + { + static const char* UPDATE_NETLOCS_STMT + = R"(REPLACE INTO recent_netlocs (netloc) VALUES (?))"; + + std::set<std::string> netlocs; + + isc::to<tailer::looper&, services::remote_tailer_t>().send_and_wait( + [&netlocs](auto& tlooper) { netlocs = tlooper.active_netlocs(); }); + + if (sqlite3_prepare_v2( + db.in(), UPDATE_NETLOCS_STMT, -1, stmt.out(), nullptr) + != SQLITE_OK) + { + log_error("could not prepare recent_netlocs statement -- %s", + sqlite3_errmsg(db)); + return; + } + + for (const auto& netloc : netlocs) { + bind_to_sqlite(stmt.in(), 1, netloc); + + if (sqlite3_step(stmt.in()) != SQLITE_DONE) { + log_error("could not execute bookmark insert statement -- %s", + sqlite3_errmsg(db)); + return; + } + + sqlite3_reset(stmt.in()); + } + session_data.sd_recent_netlocs.insert(netlocs.begin(), netlocs.end()); + } + + logfile_sub_source& lss = lnav_data.ld_log_source; + bookmarks<content_line_t>::type& bm = lss.get_user_bookmarks(); + + if (sqlite3_prepare_v2(db.in(), + "DELETE FROM bookmarks WHERE " + " log_time = ? and log_format = ? and log_hash = ? " + " and session_time = ?", + -1, + stmt.out(), + nullptr) + != SQLITE_OK) + { + log_error("could not prepare bookmark delete statement -- %s", + sqlite3_errmsg(db)); + return; + } + + for (auto& marked_session_line : marked_session_lines) { + if (!bind_line(db.in(), + stmt.in(), + marked_session_line, + lnav_data.ld_session_time)) + { + continue; + } + + if (sqlite3_step(stmt.in()) != SQLITE_DONE) { + log_error("could not execute bookmark insert statement -- %s", + sqlite3_errmsg(db)); + return; + } + + sqlite3_reset(stmt.in()); + } + + marked_session_lines.clear(); + + if (sqlite3_prepare_v2(db.in(), + "REPLACE INTO bookmarks" + " (log_time, log_format, log_hash, session_time, " + "part_name, comment, tags)" + " VALUES (?, ?, ?, ?, ?, ?, ?)", + -1, + stmt.out(), + nullptr) + != SQLITE_OK) + { + log_error("could not prepare bookmark replace statement -- %s", + sqlite3_errmsg(db)); + return; + } + + { + logfile_sub_source::iterator file_iter; + + for (file_iter = lnav_data.ld_log_source.begin(); + file_iter != lnav_data.ld_log_source.end(); + ++file_iter) + { + auto lf = (*file_iter)->get_file(); + + if (lf == nullptr) { + continue; + } + + content_line_t base_content_line; + base_content_line = lss.get_file_base_content_line(file_iter); + base_content_line + = content_line_t(base_content_line + lf->size() - 1); + + if (!bind_line(db.in(), + stmt.in(), + base_content_line, + lnav_data.ld_session_time)) + { + continue; + } + + if (sqlite3_bind_null(stmt.in(), 5) != SQLITE_OK) { + log_error("could not bind log hash -- %s", + sqlite3_errmsg(db.in())); + return; + } + + if (sqlite3_step(stmt.in()) != SQLITE_DONE) { + log_error("could not execute bookmark insert statement -- %s", + sqlite3_errmsg(db)); + return; + } + + sqlite3_reset(stmt.in()); + } + } + + save_user_bookmarks(db.in(), stmt.in(), bm[&textview_curses::BM_USER]); + save_user_bookmarks(db.in(), stmt.in(), bm[&textview_curses::BM_META]); + + if (sqlite3_prepare_v2(db.in(), + "DELETE FROM time_offset WHERE " + " log_time = ? and log_format = ? and log_hash = ? " + " and session_time = ?", + -1, + stmt.out(), + NULL) + != SQLITE_OK) + { + log_error("could not prepare time_offset delete statement -- %s", + sqlite3_errmsg(db)); + return; + } + + for (auto& offset_session_line : offset_session_lines) { + if (!bind_line(db.in(), + stmt.in(), + offset_session_line, + lnav_data.ld_session_time)) + { + continue; + } + + if (sqlite3_step(stmt.in()) != SQLITE_DONE) { + log_error("could not execute bookmark insert statement -- %s", + sqlite3_errmsg(db)); + return; + } + + sqlite3_reset(stmt.in()); + } + + offset_session_lines.clear(); + + if (sqlite3_prepare_v2(db.in(), + "REPLACE INTO time_offset" + " (log_time, log_format, log_hash, session_time, " + "offset_sec, offset_usec)" + " VALUES (?, ?, ?, ?, ?, ?)", + -1, + stmt.out(), + NULL) + != SQLITE_OK) + { + log_error("could not prepare time_offset replace statement -- %s", + sqlite3_errmsg(db)); + return; + } + + { + logfile_sub_source::iterator file_iter; + + for (file_iter = lnav_data.ld_log_source.begin(); + file_iter != lnav_data.ld_log_source.end(); + ++file_iter) + { + auto lf = (*file_iter)->get_file(); + content_line_t base_content_line; + + if (lf == nullptr) { + continue; + } + + base_content_line = lss.get_file_base_content_line(file_iter); + + if (!bind_values(stmt, + lf->original_line_time(lf->begin()), + lf->get_format()->get_name(), + lf->get_content_id(), + lnav_data.ld_session_time)) + { + continue; + } + + if (sqlite3_bind_null(stmt.in(), 5) != SQLITE_OK) { + log_error("could not bind log hash -- %s", + sqlite3_errmsg(db.in())); + return; + } + + if (sqlite3_bind_null(stmt.in(), 6) != SQLITE_OK) { + log_error("could not bind log hash -- %s", + sqlite3_errmsg(db.in())); + return; + } + + if (sqlite3_step(stmt.in()) != SQLITE_DONE) { + log_error("could not execute bookmark insert statement -- %s", + sqlite3_errmsg(db)); + return; + } + + sqlite3_reset(stmt.in()); + } + } + + for (auto& ls : lss) { + if (ls->get_file() == nullptr) { + continue; + } + + auto lf = ls->get_file(); + + if (!lf->is_time_adjusted()) { + continue; + } + + auto line_iter = lf->begin() + lf->get_time_offset_line(); + struct timeval offset = lf->get_time_offset(); + + auto read_result = lf->read_line(line_iter); + + if (read_result.isErr()) { + return; + } + + bind_values(stmt.in(), + lf->original_line_time(line_iter), + lf->get_format()->get_name(), + lf->get_content_id(), + lnav_data.ld_session_time, + offset.tv_sec, + offset.tv_usec); + + if (sqlite3_step(stmt.in()) != SQLITE_DONE) { + log_error("could not execute bookmark insert statement -- %s", + sqlite3_errmsg(db)); + return; + } + + sqlite3_reset(stmt.in()); + } + + if (sqlite3_exec(db.in(), "COMMIT", nullptr, nullptr, errmsg.out()) + != SQLITE_OK) + { + log_error("unable to begin transaction -- %s", errmsg.in()); + return; + } + + if (sqlite3_exec(db.in(), BOOKMARK_LRU_STMT, nullptr, nullptr, errmsg.out()) + != SQLITE_OK) + { + log_error("unable to delete old bookmarks -- %s", errmsg.in()); + return; + } + + if (sqlite3_exec(db.in(), NETLOC_LRU_STMT, nullptr, nullptr, errmsg.out()) + != SQLITE_OK) + { + log_error("unable to delete old netlocs -- %s", errmsg.in()); + return; + } +} + +static void +save_session_with_id(const std::string& session_id) +{ + auto_mem<FILE> file(fclose); + yajl_gen handle = nullptr; + + /* TODO: save the last search query */ + + log_info("saving session with id: %s", session_id.c_str()); + + auto view_base_name + = fmt::format(FMT_STRING("view-info-{}.ts{}.ppid{}.json"), + session_id, + lnav_data.ld_session_time, + getppid()); + auto view_file_name = lnav::paths::dotlnav() / view_base_name; + auto view_file_tmp_name = view_file_name.string() + ".tmp"; + + if ((file = fopen(view_file_tmp_name.c_str(), "w")) == nullptr) { + perror("Unable to open session file"); + } else if (nullptr == (handle = yajl_gen_alloc(nullptr))) { + perror("Unable to create yajl_gen object"); + } else { + yajl_gen_config( + handle, yajl_gen_print_callback, yajl_writer, file.in()); + + { + yajlpp_map root_map(handle); + + root_map.gen("save-time"); + root_map.gen((long long) time(nullptr)); + + root_map.gen("time-offset"); + root_map.gen(lnav_data.ld_log_source.is_time_offset_enabled()); + + root_map.gen("files"); + + { + yajlpp_array file_list(handle); + + for (auto& ld_file_name : + lnav_data.ld_active_files.fc_file_names) + { + file_list.gen(ld_file_name.first); + } + } + + root_map.gen("file-states"); + + { + yajlpp_map file_states(handle); + + for (auto& lf : lnav_data.ld_active_files.fc_files) { + auto ld_opt = lnav_data.ld_log_source.find_data(lf); + + file_states.gen(lf->get_filename()); + + { + yajlpp_map file_state(handle); + + file_state.gen("visible"); + file_state.gen(!ld_opt || ld_opt.value()->ld_visible); + } + } + } + + root_map.gen("views"); + + { + yajlpp_map top_view_map(handle); + + for (int lpc = 0; lpc < LNV__MAX; lpc++) { + textview_curses& tc = lnav_data.ld_views[lpc]; + unsigned long width; + vis_line_t height; + + top_view_map.gen(lnav_view_strings[lpc]); + + yajlpp_map view_map(handle); + + view_map.gen("top_line"); + + tc.get_dimensions(height, width); + if (tc.get_top() >= tc.get_top_for_last_row()) { + view_map.gen(-1LL); + } else { + view_map.gen((long long) tc.get_top()); + } + + view_map.gen("search"); + view_map.gen(lnav_data.ld_views[lpc].get_current_search()); + + view_map.gen("word_wrap"); + view_map.gen(tc.get_word_wrap()); + + auto tss = tc.get_sub_source(); + if (tss == nullptr) { + continue; + } + + view_map.gen("filtering"); + view_map.gen(tss->tss_apply_filters); + + filter_stack& fs = tss->get_filters(); + + view_map.gen("commands"); + yajlpp_array cmd_array(handle); + + for (const auto& filter : fs) { + auto cmd = filter->to_command(); + + if (cmd.empty()) { + continue; + } + + cmd_array.gen(cmd); + + if (!filter->is_enabled()) { + cmd_array.gen("disable-filter " + filter->get_id()); + } + } + + auto& hmap = lnav_data.ld_views[lpc].get_highlights(); + + for (auto& hl : hmap) { + if (hl.first.first != highlight_source_t::INTERACTIVE) { + continue; + } + cmd_array.gen("highlight " + hl.first.second); + } + + if (lpc == LNV_LOG) { + for (const auto& format : + log_format::get_root_formats()) + { + auto* elf = dynamic_cast<external_log_format*>( + format.get()); + + if (elf == nullptr) { + continue; + } + + for (const auto& vd : elf->elf_value_defs) { + if (!vd.second->vd_meta.lvm_user_hidden) { + continue; + } + + cmd_array.gen("hide-fields " + + elf->get_name().to_string() + + "." + vd.first.to_string()); + } + } + + logfile_sub_source& lss = lnav_data.ld_log_source; + + struct timeval min_time, max_time; + bool have_min_time = lss.get_min_log_time(min_time); + bool have_max_time = lss.get_max_log_time(max_time); + char min_time_str[32], max_time_str[32]; + + sql_strftime( + min_time_str, sizeof(min_time_str), min_time); + if (have_min_time) { + cmd_array.gen("hide-lines-before " + + std::string(min_time_str)); + } + if (have_max_time) { + sql_strftime( + max_time_str, sizeof(max_time_str), max_time); + cmd_array.gen("hide-lines-after " + + std::string(max_time_str)); + } + + auto mark_expr = lss.get_sql_marker_text(); + if (!mark_expr.empty()) { + cmd_array.gen("mark-expr " + mark_expr); + } + } + } + } + } + + yajl_gen_clear(handle); + yajl_gen_free(handle); + + fclose(file.release()); + + log_perror(rename(view_file_tmp_name.c_str(), view_file_name.c_str())); + + log_info("Saved session: %s", view_file_name.c_str()); + } +} + +void +save_session() +{ + if (lnav_data.ld_flags & LNF_SECURE_MODE) { + log_info("secure mode is enabled, not saving session"); + return; + } + + log_debug("BEGIN save_session"); + save_time_bookmarks(); + + const auto opt_session_id = compute_session_id(); + opt_session_id | [](auto& session_id) { save_session_with_id(session_id); }; + for (const auto& pair : lnav_data.ld_session_id) { + if (opt_session_id && pair.first == opt_session_id.value()) { + continue; + } + save_session_with_id(pair.first); + } + log_debug("END save_session"); +} + +void +reset_session() +{ + log_info("reset session: time=%d", lnav_data.ld_session_time); + + save_session(); + + lnav_data.ld_session_time = time(nullptr); + session_data.sd_file_states.clear(); + + for (auto& tc : lnav_data.ld_views) { + auto& hmap = tc.get_highlights(); + auto hl_iter = hmap.begin(); + + while (hl_iter != hmap.end()) { + if (hl_iter->first.first != highlight_source_t::INTERACTIVE) { + ++hl_iter; + } else { + hmap.erase(hl_iter++); + } + } + } + + for (const auto& lf : lnav_data.ld_active_files.fc_files) { + lf->reset_state(); + } + + lnav_data.ld_log_source.set_marked_only(false); + lnav_data.ld_log_source.clear_min_max_log_times(); + lnav_data.ld_log_source.set_min_log_level(LEVEL_UNKNOWN); + lnav_data.ld_log_source.set_sql_filter("", nullptr); + lnav_data.ld_log_source.set_sql_marker("", nullptr); + + lnav_data.ld_log_source.clear_bookmark_metadata(); + + for (auto& tc : lnav_data.ld_views) { + text_sub_source* tss = tc.get_sub_source(); + + if (tss == nullptr) { + continue; + } + tss->get_filters().clear_filters(); + tss->tss_apply_filters = true; + tss->text_filters_changed(); + tss->text_clear_marks(&textview_curses::BM_USER); + tc.get_bookmarks()[&textview_curses::BM_USER].clear(); + tss->text_clear_marks(&textview_curses::BM_META); + tc.get_bookmarks()[&textview_curses::BM_META].clear(); + tc.reload_data(); + } + + lnav_data.ld_filter_view.reload_data(); + lnav_data.ld_files_view.reload_data(); + for (const auto& format : log_format::get_root_formats()) { + auto* elf = dynamic_cast<external_log_format*>(format.get()); + + if (elf == nullptr) { + continue; + } + + for (const auto& vd : elf->elf_value_defs) { + vd.second->vd_meta.lvm_user_hidden = false; + } + } +} + +void +lnav::session::regex101::insert_entry(const lnav::session::regex101::entry& ei) +{ + constexpr const char* STMT = R"( + INSERT INTO regex101_entries + (format_name, regex_name, permalink, delete_code) + VALUES (?, ?, ?, ?); +)"; + + auto db_path = lnav::paths::dotlnav() / LOG_METADATA_NAME; + auto_sqlite3 db; + + if (sqlite3_open(db_path.c_str(), db.out()) != SQLITE_OK) { + return; + } + + auto_mem<char, sqlite3_free> errmsg; + if (sqlite3_exec(db.in(), META_TABLE_DEF, nullptr, nullptr, errmsg.out()) + != SQLITE_OK) + { + log_error("unable to make bookmark table -- %s", errmsg.in()); + return; + } + + auto prep_res = prepare_stmt(db.in(), + STMT, + ei.re_format_name, + ei.re_regex_name, + ei.re_permalink, + ei.re_delete_code); + + if (prep_res.isErr()) { + return; + } + + auto ps = prep_res.unwrap(); + + ps.execute(); +} + +template<> +struct from_sqlite<lnav::session::regex101::entry> { + inline lnav::session::regex101::entry operator()(int argc, + sqlite3_value** argv, + int argi) + { + return { + from_sqlite<std::string>()(argc, argv, argi + 0), + from_sqlite<std::string>()(argc, argv, argi + 1), + from_sqlite<std::string>()(argc, argv, argi + 2), + from_sqlite<std::string>()(argc, argv, argi + 3), + }; + } +}; + +Result<std::vector<lnav::session::regex101::entry>, std::string> +lnav::session::regex101::get_entries() +{ + constexpr const char* STMT = R"( + SELECT * FROM regex101_entries; +)"; + + auto db_path = lnav::paths::dotlnav() / LOG_METADATA_NAME; + auto_sqlite3 db; + + if (sqlite3_open(db_path.c_str(), db.out()) != SQLITE_OK) { + return Err(std::string()); + } + + auto_mem<char, sqlite3_free> errmsg; + if (sqlite3_exec(db.in(), META_TABLE_DEF, nullptr, nullptr, errmsg.out()) + != SQLITE_OK) + { + log_error("unable to make bookmark table -- %s", errmsg.in()); + return Err(std::string(errmsg)); + } + + auto ps = TRY(prepare_stmt(db.in(), STMT)); + bool done = false; + std::vector<entry> retval; + + while (!done) { + auto fetch_res = ps.fetch_row<entry>(); + + if (fetch_res.is<prepared_stmt::fetch_error>()) { + return Err(fetch_res.get<prepared_stmt::fetch_error>().fe_msg); + } + + fetch_res.match( + [&done](const prepared_stmt::end_of_rows&) { done = true; }, + [](const prepared_stmt::fetch_error&) {}, + [&retval](entry en) { retval.emplace_back(en); }); + } + return Ok(retval); +} + +void +lnav::session::regex101::delete_entry(const std::string& format_name, + const std::string& regex_name) +{ + constexpr const char* STMT = R"( + DELETE FROM regex101_entries WHERE + format_name = ? AND regex_name = ?; +)"; + + auto db_path = lnav::paths::dotlnav() / LOG_METADATA_NAME; + auto_sqlite3 db; + + if (sqlite3_open(db_path.c_str(), db.out()) != SQLITE_OK) { + return; + } + + auto prep_res = prepare_stmt(db.in(), STMT, format_name, regex_name); + + if (prep_res.isErr()) { + return; + } + + auto ps = prep_res.unwrap(); + + ps.execute(); +} + +lnav::session::regex101::get_result_t +lnav::session::regex101::get_entry(const std::string& format_name, + const std::string& regex_name) +{ + constexpr const char* STMT = R"( + SELECT * FROM regex101_entries WHERE + format_name = ? AND regex_name = ?; + )"; + + auto db_path = lnav::paths::dotlnav() / LOG_METADATA_NAME; + auto_sqlite3 db; + + if (sqlite3_open(db_path.c_str(), db.out()) != SQLITE_OK) { + return error{std::string()}; + } + + auto_mem<char, sqlite3_free> errmsg; + if (sqlite3_exec(db.in(), META_TABLE_DEF, nullptr, nullptr, errmsg.out()) + != SQLITE_OK) + { + log_error("unable to make bookmark table -- %s", errmsg.in()); + return error{std::string(errmsg)}; + } + + auto prep_res = prepare_stmt(db.in(), STMT, format_name, regex_name); + if (prep_res.isErr()) { + return error{prep_res.unwrapErr()}; + } + + auto ps = prep_res.unwrap(); + return ps.fetch_row<entry>().match( + [](const prepared_stmt::fetch_error& fe) -> get_result_t { + return error{fe.fe_msg}; + }, + [](const prepared_stmt::end_of_rows&) -> get_result_t { + return no_entry{}; + }, + [](const entry& en) -> get_result_t { return en; }); +} |