/** * Copyright (c) 2007-2012, 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 "log_vtab_impl.hh" #include "base/lnav_log.hh" #include "base/string_util.hh" #include "config.h" #include "lnav_util.hh" #include "logfile_sub_source.hh" #include "sql_util.hh" #include "vtab_module.hh" #include "yajlpp/json_op.hh" #include "yajlpp/yajlpp_def.hh" using namespace lnav::roles::literals; static auto intern_lifetime = intern_string::get_table_lifetime(); static struct log_cursor log_cursor_latest; thread_local _log_vtab_data log_vtab_data; static const char* LOG_COLUMNS = R"( ( log_line INTEGER PRIMARY KEY, -- The line number for the log message log_part TEXT COLLATE naturalnocase, -- The partition the message is in log_time DATETIME, -- The adjusted timestamp for the log message log_actual_time DATETIME HIDDEN, -- The timestamp from the original log file for this message log_idle_msecs INTEGER, -- The difference in time between this messages and the previous log_level TEXT COLLATE loglevel, -- The log message level log_mark BOOLEAN, -- True if the log message was marked log_comment TEXT, -- The comment for this message log_tags TEXT, -- A JSON list of tags for this message log_filters TEXT, -- A JSON list of filter IDs that matched this message -- BEGIN Format-specific fields: )"; static const char* LOG_FOOTER_COLUMNS = R"( -- END Format-specific fields log_time_msecs INTEGER HIDDEN, -- The adjusted timestamp for the log message as the number of milliseconds from the epoch log_path TEXT HIDDEN COLLATE naturalnocase, -- The path to the log file this message is from log_text TEXT HIDDEN, -- The full text of the log message log_body TEXT HIDDEN, -- The body of the log message log_raw_text TEXT HIDDEN -- The raw text from the log file ); )"; static const char* type_to_string(int type) { switch (type) { case SQLITE_FLOAT: return "FLOAT"; case SQLITE_INTEGER: return "INTEGER"; case SQLITE_TEXT: return "TEXT"; } ensure("Invalid sqlite type"); return nullptr; } std::string log_vtab_impl::get_table_statement() { std::vector cols; std::vector::const_iterator iter; std::ostringstream oss; size_t max_name_len = 15; oss << "CREATE TABLE " << this->get_name().to_string() << LOG_COLUMNS; this->get_columns(cols); this->vi_column_count = cols.size(); for (iter = cols.begin(); iter != cols.end(); iter++) { max_name_len = std::max(max_name_len, iter->vc_name.length()); } for (iter = cols.begin(); iter != cols.end(); iter++) { auto_mem coldecl; auto_mem colname; std::string comment; require(!iter->vc_name.empty()); if (!iter->vc_comment.empty()) { comment.append(" -- ").append(iter->vc_comment); } colname = sql_quote_ident(iter->vc_name.c_str()); coldecl = sqlite3_mprintf( " %-*s %-7s %s COLLATE %-15Q,%s\n", max_name_len, colname.in(), type_to_string(iter->vc_type), iter->vc_hidden ? "hidden" : "", iter->vc_collator.empty() ? "BINARY" : iter->vc_collator.c_str(), comment.c_str()); oss << coldecl; } oss << LOG_FOOTER_COLUMNS; log_debug("log_vtab_impl.get_table_statement() -> %s", oss.str().c_str()); return oss.str(); } std::pair log_vtab_impl::logline_value_to_sqlite_type(value_kind_t kind) { int type = 0; unsigned int subtype = 0; switch (kind) { case value_kind_t::VALUE_JSON: type = SQLITE3_TEXT; subtype = 74; break; case value_kind_t::VALUE_NULL: case value_kind_t::VALUE_TEXT: case value_kind_t::VALUE_STRUCT: case value_kind_t::VALUE_QUOTED: case value_kind_t::VALUE_W3C_QUOTED: case value_kind_t::VALUE_TIMESTAMP: case value_kind_t::VALUE_XML: type = SQLITE3_TEXT; break; case value_kind_t::VALUE_FLOAT: type = SQLITE_FLOAT; break; case value_kind_t::VALUE_BOOLEAN: case value_kind_t::VALUE_INTEGER: type = SQLITE_INTEGER; break; case value_kind_t::VALUE_UNKNOWN: case value_kind_t::VALUE__MAX: ensure(0); break; } return std::make_pair(type, subtype); } void log_vtab_impl::get_foreign_keys(std::vector& keys_inout) const { keys_inout.emplace_back("log_line"); keys_inout.emplace_back("min(log_line)"); keys_inout.emplace_back("log_mark"); keys_inout.emplace_back("log_time_msecs"); } void log_vtab_impl::extract(std::shared_ptr lf, uint64_t line_number, shared_buffer_ref& line, std::vector& values) { auto format = lf->get_format(); this->vi_attrs.clear(); format->annotate(line_number, line, this->vi_attrs, values, false); } bool log_vtab_impl::is_valid(log_cursor& lc, logfile_sub_source& lss) { content_line_t cl(lss.at(lc.lc_curr_line)); std::shared_ptr lf = lss.find(cl); auto lf_iter = lf->begin() + cl; if (!lf_iter->is_message()) { return false; } return true; } struct vtab { sqlite3_vtab base; sqlite3* db; textview_curses* tc{nullptr}; logfile_sub_source* lss{nullptr}; std::shared_ptr vi; }; struct vtab_cursor { sqlite3_vtab_cursor base; struct log_cursor log_cursor; shared_buffer_ref log_msg; std::vector line_values; }; static int vt_destructor(sqlite3_vtab* p_svt); static int vt_create(sqlite3* db, void* pAux, int argc, const char* const* argv, sqlite3_vtab** pp_vt, char** pzErr) { auto* vm = (log_vtab_manager*) pAux; int rc = SQLITE_OK; /* Allocate the sqlite3_vtab/vtab structure itself */ auto p_vt = std::make_unique(); p_vt->db = db; /* Declare the vtable's structure */ p_vt->vi = vm->lookup_impl(intern_string::lookup(argv[3])); if (p_vt->vi == nullptr) { return SQLITE_ERROR; } p_vt->tc = vm->get_view(); p_vt->lss = vm->get_source(); rc = sqlite3_declare_vtab(db, p_vt->vi->get_table_statement().c_str()); /* Success. Set *pp_vt and return */ auto loose_p_vt = p_vt.release(); *pp_vt = &loose_p_vt->base; log_debug("creating log format table: %s = %p", argv[3], p_vt.get()); return rc; } static int vt_destructor(sqlite3_vtab* p_svt) { vtab* p_vt = (vtab*) p_svt; delete p_vt; return SQLITE_OK; } static int vt_connect(sqlite3* db, void* p_aux, int argc, const char* const* argv, sqlite3_vtab** pp_vt, char** pzErr) { return vt_create(db, p_aux, argc, argv, pp_vt, pzErr); } static int vt_disconnect(sqlite3_vtab* pVtab) { return vt_destructor(pVtab); } static int vt_destroy(sqlite3_vtab* p_vt) { return vt_destructor(p_vt); } static int vt_next(sqlite3_vtab_cursor* cur); static int vt_open(sqlite3_vtab* p_svt, sqlite3_vtab_cursor** pp_cursor) { vtab* p_vt = (vtab*) p_svt; p_vt->base.zErrMsg = NULL; vtab_cursor* p_cur = new vtab_cursor(); *pp_cursor = (sqlite3_vtab_cursor*) p_cur; p_cur->base.pVtab = p_svt; p_cur->log_cursor.lc_curr_line = -1_vl; p_cur->log_cursor.lc_end_line = vis_line_t(p_vt->lss->text_line_count()); p_cur->log_cursor.lc_sub_index = 0; vt_next((sqlite3_vtab_cursor*) p_cur); return SQLITE_OK; } static int vt_close(sqlite3_vtab_cursor* cur) { vtab_cursor* p_cur = (vtab_cursor*) cur; /* Free cursor struct. */ delete p_cur; return SQLITE_OK; } static int vt_eof(sqlite3_vtab_cursor* cur) { vtab_cursor* vc = (vtab_cursor*) cur; return vc->log_cursor.is_eof(); } static int vt_next(sqlite3_vtab_cursor* cur) { vtab_cursor* vc = (vtab_cursor*) cur; vtab* vt = (vtab*) cur->pVtab; bool done = false; vc->line_values.clear(); do { log_cursor_latest = vc->log_cursor; if (((log_cursor_latest.lc_curr_line % 1024) == 0) && (log_vtab_data.lvd_progress != NULL && log_vtab_data.lvd_progress(log_cursor_latest))) { break; } done = vt->vi->next(vc->log_cursor, *vt->lss); } while (!done); return SQLITE_OK; } static int vt_column(sqlite3_vtab_cursor* cur, sqlite3_context* ctx, int col) { vtab_cursor* vc = (vtab_cursor*) cur; vtab* vt = (vtab*) cur->pVtab; content_line_t cl(vt->lss->at(vc->log_cursor.lc_curr_line)); uint64_t line_number; auto ld = vt->lss->find_data(cl, line_number); auto lf = (*ld)->get_file(); auto ll = lf->begin() + line_number; require(col >= 0); /* Just return the ordinal of the column requested. */ switch (col) { case VT_COL_LINE_NUMBER: { sqlite3_result_int64(ctx, vc->log_cursor.lc_curr_line); } break; case VT_COL_PARTITION: { vis_bookmarks& vb = vt->tc->get_bookmarks(); bookmark_vector& bv = vb[&textview_curses::BM_META]; if (bv.empty()) { sqlite3_result_null(ctx); } else { vis_line_t curr_line(vc->log_cursor.lc_curr_line); auto iter = lower_bound(bv.begin(), bv.end(), curr_line + 1_vl); if (iter != bv.begin()) { --iter; content_line_t part_line = vt->lss->at(*iter); std::map& bm_meta = vt->lss->get_user_bookmark_metadata(); std::map::iterator meta_iter; meta_iter = bm_meta.find(part_line); if (meta_iter != bm_meta.end() && !meta_iter->second.bm_name.empty()) { sqlite3_result_text(ctx, meta_iter->second.bm_name.c_str(), meta_iter->second.bm_name.size(), SQLITE_TRANSIENT); } else { sqlite3_result_null(ctx); } } else { sqlite3_result_null(ctx); } } } break; case VT_COL_LOG_TIME: { char buffer[64]; sql_strftime( buffer, sizeof(buffer), ll->get_time(), ll->get_millis()); sqlite3_result_text(ctx, buffer, strlen(buffer), SQLITE_TRANSIENT); } break; case VT_COL_LOG_ACTUAL_TIME: { char buffer[64]; if (ll->is_time_skewed()) { if (vc->line_values.empty()) { lf->read_full_message(ll, vc->log_msg); vt->vi->extract( lf, line_number, vc->log_msg, vc->line_values); } struct line_range time_range; time_range = find_string_attr_range(vt->vi->vi_attrs, &logline::L_TIMESTAMP); const char* time_src = vc->log_msg.get_data() + time_range.lr_start; struct timeval actual_tv; struct exttm tm; if (lf->get_format()->lf_date_time.scan( time_src, time_range.length(), lf->get_format()->get_timestamp_formats(), &tm, actual_tv, false)) { sql_strftime(buffer, sizeof(buffer), actual_tv); } } else { sql_strftime( buffer, sizeof(buffer), ll->get_time(), ll->get_millis()); } sqlite3_result_text(ctx, buffer, strlen(buffer), SQLITE_TRANSIENT); break; } case VT_COL_IDLE_MSECS: if (vc->log_cursor.lc_curr_line == 0) { sqlite3_result_int64(ctx, 0); } else { content_line_t prev_cl( vt->lss->at(vis_line_t(vc->log_cursor.lc_curr_line - 1))); auto prev_lf = vt->lss->find(prev_cl); auto prev_ll = prev_lf->begin() + prev_cl; uint64_t prev_time, curr_line_time; prev_time = prev_ll->get_time() * 1000ULL; prev_time += prev_ll->get_millis(); curr_line_time = ll->get_time() * 1000ULL; curr_line_time += ll->get_millis(); // require(curr_line_time >= prev_time); sqlite3_result_int64(ctx, curr_line_time - prev_time); } break; case VT_COL_LEVEL: { const char* level_name = ll->get_level_name(); sqlite3_result_text( ctx, level_name, strlen(level_name), SQLITE_STATIC); } break; case VT_COL_MARK: { sqlite3_result_int(ctx, ll->is_marked()); } break; case VT_COL_LOG_COMMENT: { const auto& bm = vt->lss->get_user_bookmark_metadata(); auto bm_iter = bm.find(vt->lss->at(vc->log_cursor.lc_curr_line)); if (bm_iter == bm.end() || bm_iter->second.bm_comment.empty()) { sqlite3_result_null(ctx); } else { const bookmark_metadata& meta = bm_iter->second; sqlite3_result_text(ctx, meta.bm_comment.c_str(), meta.bm_comment.length(), SQLITE_TRANSIENT); } break; } case VT_COL_LOG_TAGS: { const auto& bm = vt->lss->get_user_bookmark_metadata(); auto bm_iter = bm.find(vt->lss->at(vc->log_cursor.lc_curr_line)); if (bm_iter == bm.end() || bm_iter->second.bm_tags.empty()) { sqlite3_result_null(ctx); } else { const bookmark_metadata& meta = bm_iter->second; yajlpp_gen gen; yajl_gen_config(gen, yajl_gen_beautify, false); { yajlpp_array arr(gen); for (const auto& str : meta.bm_tags) { arr.gen(str); } } string_fragment sf = gen.to_string_fragment(); sqlite3_result_text( ctx, sf.data(), sf.length(), SQLITE_TRANSIENT); sqlite3_result_subtype(ctx, 'J'); } break; } case VT_COL_FILTERS: { auto& filter_mask = (*ld)->ld_filter_state.lfo_filter_state.tfs_mask; if (!filter_mask[line_number]) { sqlite3_result_null(ctx); } else { auto& filters = vt->lss->get_filters(); yajlpp_gen gen; yajl_gen_config(gen, yajl_gen_beautify, false); { yajlpp_array arr(gen); for (auto& filter : filters) { if (filter->lf_deleted) { continue; } uint32_t mask = (1UL << filter->get_index()); if (filter_mask[line_number] & mask) { arr.gen(filter->get_index()); } } } to_sqlite(ctx, gen.to_string_fragment()); sqlite3_result_subtype(ctx, 'J'); } break; } default: if (col > (VT_COL_MAX + vt->vi->vi_column_count - 1)) { int post_col_number = col - (VT_COL_MAX + vt->vi->vi_column_count - 1) - 1; switch (post_col_number) { case 0: { sqlite3_result_int64(ctx, ll->get_time_in_millis()); break; } case 1: { const auto& fn = lf->get_filename(); sqlite3_result_text( ctx, fn.c_str(), fn.length(), SQLITE_STATIC); break; } case 2: { shared_buffer_ref line; lf->read_full_message(ll, line); sqlite3_result_text(ctx, line.get_data(), line.length(), SQLITE_TRANSIENT); break; } case 3: { if (vc->line_values.empty()) { lf->read_full_message(ll, vc->log_msg); vt->vi->extract( lf, line_number, vc->log_msg, vc->line_values); } struct line_range body_range; body_range = find_string_attr_range(vt->vi->vi_attrs, &SA_BODY); if (!body_range.is_valid()) { sqlite3_result_null(ctx); } else { const char* msg_start = vc->log_msg.get_data(); sqlite3_result_text(ctx, &msg_start[body_range.lr_start], body_range.length(), SQLITE_TRANSIENT); } break; } case 4: { auto read_res = lf->read_raw_message(ll); if (read_res.isErr()) { auto msg = fmt::format( FMT_STRING("unable to read line -- {}"), read_res.unwrapErr()); sqlite3_result_error( ctx, msg.c_str(), msg.length()); } else { auto sbr = read_res.unwrap(); sqlite3_result_text(ctx, sbr.get_data(), sbr.length(), SQLITE_TRANSIENT); } break; } } } else { if (vc->line_values.empty()) { lf->read_full_message(ll, vc->log_msg); vt->vi->extract( lf, line_number, vc->log_msg, vc->line_values); } size_t sub_col = col - VT_COL_MAX; std::vector::iterator lv_iter; lv_iter = find_if(vc->line_values.begin(), vc->line_values.end(), logline_value_cmp(NULL, sub_col)); if (lv_iter != vc->line_values.end()) { if (!lv_iter->lv_meta.lvm_struct_name.empty()) { yajlpp_gen gen; yajl_gen_config(gen, yajl_gen_beautify, false); { yajlpp_map root(gen); for (auto& lv_struct : vc->line_values) { if (lv_struct.lv_meta.lvm_column != sub_col) { continue; } root.gen(lv_struct.lv_meta.lvm_name); switch (lv_struct.lv_meta.lvm_kind) { case value_kind_t::VALUE_NULL: root.gen(); break; case value_kind_t::VALUE_BOOLEAN: root.gen((bool) lv_struct.lv_value.i); break; case value_kind_t::VALUE_INTEGER: root.gen(lv_struct.lv_value.i); break; case value_kind_t::VALUE_FLOAT: root.gen(lv_struct.lv_value.d); break; case value_kind_t::VALUE_JSON: { auto_mem parse_handle( yajl_free); json_ptr jp(""); json_op jo(jp); jo.jo_ptr_callbacks = json_op::gen_callbacks; jo.jo_ptr_data = gen; parse_handle.reset( yajl_alloc(&json_op::ptr_callbacks, nullptr, &jo)); auto json_in = (const unsigned char*) lv_struct.text_value(); auto json_len = lv_struct.text_length(); if (yajl_parse(parse_handle.in(), json_in, json_len) != yajl_status_ok || yajl_complete_parse( parse_handle.in()) != yajl_status_ok) { log_error( "failed to parse json value: " "%.*s", lv_struct.text_length(), lv_struct.text_value()); root.gen(lv_struct.to_string()); } break; } default: root.gen(lv_struct.to_string()); break; } } } auto sf = gen.to_string_fragment(); sqlite3_result_text( ctx, sf.data(), sf.length(), SQLITE_TRANSIENT); sqlite3_result_subtype(ctx, 74); } else { switch (lv_iter->lv_meta.lvm_kind) { case value_kind_t::VALUE_NULL: sqlite3_result_null(ctx); break; case value_kind_t::VALUE_JSON: { sqlite3_result_text(ctx, lv_iter->text_value(), lv_iter->text_length(), SQLITE_TRANSIENT); sqlite3_result_subtype(ctx, 74); break; } case value_kind_t::VALUE_STRUCT: case value_kind_t::VALUE_TEXT: case value_kind_t::VALUE_XML: case value_kind_t::VALUE_TIMESTAMP: { sqlite3_result_text(ctx, lv_iter->text_value(), lv_iter->text_length(), SQLITE_TRANSIENT); break; } case value_kind_t::VALUE_W3C_QUOTED: case value_kind_t::VALUE_QUOTED: if (lv_iter->lv_sbr.empty()) { sqlite3_result_text( ctx, "", 0, SQLITE_STATIC); } else { const char* text_value = lv_iter->lv_sbr.get_data(); size_t text_len = lv_iter->lv_sbr.length(); switch (text_value[0]) { case '\'': case '"': { char* val = (char*) sqlite3_malloc( text_len); if (val == nullptr) { sqlite3_result_error_nomem(ctx); } else { auto unquote_func = lv_iter->lv_meta.lvm_kind == value_kind_t:: VALUE_W3C_QUOTED ? unquote_w3c : unquote; size_t unquoted_len = unquote_func(val, text_value, text_len); sqlite3_result_text( ctx, val, unquoted_len, sqlite3_free); } break; } default: { sqlite3_result_text( ctx, text_value, lv_iter->lv_sbr.length(), SQLITE_TRANSIENT); break; } } } break; case value_kind_t::VALUE_BOOLEAN: case value_kind_t::VALUE_INTEGER: sqlite3_result_int64(ctx, lv_iter->lv_value.i); break; case value_kind_t::VALUE_FLOAT: sqlite3_result_double(ctx, lv_iter->lv_value.d); break; case value_kind_t::VALUE_UNKNOWN: case value_kind_t::VALUE__MAX: require(0); break; } } } else { sqlite3_result_null(ctx); } } break; } return SQLITE_OK; } static int vt_rowid(sqlite3_vtab_cursor* cur, sqlite_int64* p_rowid) { vtab_cursor* p_cur = (vtab_cursor*) cur; *p_rowid = (((uint64_t) p_cur->log_cursor.lc_curr_line) << 8) | (p_cur->log_cursor.lc_sub_index & 0xff); return SQLITE_OK; } void log_cursor::update(unsigned char op, vis_line_t vl, bool exact) { if (vl < 0) { vl = -1_vl; } switch (op) { case SQLITE_INDEX_CONSTRAINT_EQ: if (vl < this->lc_end_line) { this->lc_curr_line = vl; this->lc_end_line = vis_line_t(this->lc_curr_line + 1); } break; case SQLITE_INDEX_CONSTRAINT_GE: this->lc_curr_line = vl; break; case SQLITE_INDEX_CONSTRAINT_GT: this->lc_curr_line = vis_line_t(vl + (exact ? 1 : 0)); break; case SQLITE_INDEX_CONSTRAINT_LE: this->lc_end_line = vis_line_t(vl + (exact ? 1 : 0)); break; case SQLITE_INDEX_CONSTRAINT_LT: this->lc_end_line = vl; break; } } static int vt_filter(sqlite3_vtab_cursor* p_vtc, int idxNum, const char* idxStr, int argc, sqlite3_value** argv) { vtab_cursor* p_cur = (vtab_cursor*) p_vtc; vtab* vt = (vtab*) p_vtc->pVtab; sqlite3_index_info::sqlite3_index_constraint* index = (sqlite3_index_info::sqlite3_index_constraint*) idxStr; log_info("(%p) filter called: %d", vt, idxNum); p_cur->log_cursor.lc_curr_line = -1_vl; p_cur->log_cursor.lc_end_line = vis_line_t(vt->lss->text_line_count()); vt_next(p_vtc); if (!idxNum) { return SQLITE_OK; } for (int lpc = 0; lpc < idxNum; lpc++) { switch (index[lpc].iColumn) { case VT_COL_LINE_NUMBER: p_cur->log_cursor.update( index[lpc].op, vis_line_t(sqlite3_value_int64(argv[lpc]))); break; case VT_COL_LOG_TIME: if (sqlite3_value_type(argv[lpc]) == SQLITE3_TEXT) { const unsigned char* datestr = sqlite3_value_text(argv[lpc]); date_time_scanner dts; struct timeval tv; struct exttm mytm; dts.scan((const char*) datestr, strlen((const char*) datestr), NULL, &mytm, tv); auto vl_opt = vt->lss->find_from_time(tv); if (!vl_opt) { p_cur->log_cursor.lc_curr_line = p_cur->log_cursor.lc_end_line; } else { p_cur->log_cursor.update( index[lpc].op, vl_opt.value(), false); } } break; } } while (!p_cur->log_cursor.is_eof() && !vt->vi->is_valid(p_cur->log_cursor, *vt->lss)) { p_cur->log_cursor.lc_curr_line += 1_vl; } return SQLITE_OK; } static int vt_best_index(sqlite3_vtab* tab, sqlite3_index_info* p_info) { std::vector indexes; int argvInUse = 0; vtab* vt = (vtab*) tab; log_info( "(%p) best index called: nConstraint=%d", tab, p_info->nConstraint); if (!vt->vi->vi_supports_indexes) { return SQLITE_OK; } for (int lpc = 0; lpc < p_info->nConstraint; lpc++) { if (!p_info->aConstraint[lpc].usable || p_info->aConstraint[lpc].op == SQLITE_INDEX_CONSTRAINT_MATCH) { continue; } switch (p_info->aConstraint[lpc].iColumn) { case VT_COL_LINE_NUMBER: argvInUse += 1; indexes.push_back(p_info->aConstraint[lpc]); p_info->aConstraintUsage[lpc].argvIndex = argvInUse; break; } } if (!argvInUse) { for (int lpc = 0; lpc < p_info->nConstraint; lpc++) { if (!p_info->aConstraint[lpc].usable || p_info->aConstraint[lpc].op == SQLITE_INDEX_CONSTRAINT_MATCH) { continue; } switch (p_info->aConstraint[lpc].iColumn) { case VT_COL_LOG_TIME: argvInUse += 1; indexes.push_back(p_info->aConstraint[lpc]); p_info->aConstraintUsage[lpc].argvIndex = argvInUse; break; } } } if (argvInUse) { sqlite3_index_info::sqlite3_index_constraint* index_copy; size_t len = indexes.size() * sizeof(*index_copy); log_info("found index, passing %d args", argvInUse); index_copy = (sqlite3_index_info::sqlite3_index_constraint*) sqlite3_malloc( len); if (!index_copy) { return SQLITE_NOMEM; } memcpy(index_copy, &indexes[0], len); p_info->idxNum = argvInUse; p_info->idxStr = (char*) index_copy; p_info->needToFreeIdxStr = 1; p_info->estimatedCost = 10.0; } return SQLITE_OK; } static struct json_path_container tags_handler = { json_path_handler("#") .with_synopsis("tag") .with_description("A tag for the log line") .with_pattern(R"(^#[^\s]+$)") .FOR_FIELD(bookmark_metadata, bm_tags), }; static int vt_update(sqlite3_vtab* tab, int argc, sqlite3_value** argv, sqlite_int64* rowid_out) { vtab* vt = (vtab*) tab; int retval = SQLITE_READONLY; if (argc > 1 && sqlite3_value_type(argv[0]) != SQLITE_NULL && sqlite3_value_int64(argv[0]) == sqlite3_value_int64(argv[1])) { int64_t rowid = sqlite3_value_int64(argv[0]) >> 8; int val = sqlite3_value_int(argv[2 + VT_COL_MARK]); vis_line_t vrowid(rowid); std::map& bm = vt->lss->get_user_bookmark_metadata(); const auto* part_name = sqlite3_value_text(argv[2 + VT_COL_PARTITION]); const auto* log_comment = sqlite3_value_text(argv[2 + VT_COL_LOG_COMMENT]); const auto* log_tags = sqlite3_value_text(argv[2 + VT_COL_LOG_TAGS]); bookmark_metadata tmp_bm; if (log_tags) { std::vector errors; yajlpp_parse_context ypc(vt->vi->get_tags_name(), &tags_handler); auto_mem handle(yajl_free); handle = yajl_alloc(&ypc.ypc_callbacks, nullptr, &ypc); ypc.ypc_userdata = &errors; ypc.ypc_line_number = log_vtab_data.lvd_location.sl_line_number; ypc.with_handle(handle) .with_error_reporter([](const yajlpp_parse_context& ypc, auto msg) { auto& errors = *((std::vector*) ypc.ypc_userdata); errors.emplace_back(msg); }) .with_obj(tmp_bm); ypc.parse_doc(string_fragment{log_tags}); if (!errors.empty()) { auto top_error = lnav::console::user_message::error( attr_line_t("invalid value for ") .append_quoted("log_tags"_symbol) .append(" column of table ") .append_quoted(lnav::roles::symbol( vt->vi->get_name().to_string()))) .with_reason(errors[0].to_attr_line({})) .with_snippet(lnav::console::snippet::from( log_vtab_data.lvd_location, log_vtab_data.lvd_content)); auto json_error = lnav::to_json(top_error); tab->zErrMsg = sqlite3_mprintf("lnav-error:%s", json_error.c_str()); log_debug("dump %s", json_error.c_str()); return SQLITE_ERROR; } } bookmark_vector& bv = vt->tc->get_bookmarks()[&textview_curses::BM_META]; bool has_meta = part_name != nullptr || log_comment != nullptr || log_tags != nullptr; if (binary_search(bv.begin(), bv.end(), vrowid) && !has_meta) { vt->tc->set_user_mark(&textview_curses::BM_META, vrowid, false); bm.erase(vt->lss->at(vrowid)); vt->lss->set_line_meta_changed(); } if (has_meta) { bookmark_metadata& line_meta = bm[vt->lss->at(vrowid)]; vt->tc->set_user_mark(&textview_curses::BM_META, vrowid, true); if (part_name) { line_meta.bm_name = std::string((const char*) part_name); } else { line_meta.bm_name.clear(); } if (log_comment) { line_meta.bm_comment = std::string((const char*) log_comment); } else { line_meta.bm_comment.clear(); } if (log_tags) { line_meta.bm_tags.clear(); for (const auto& tag : tmp_bm.bm_tags) { line_meta.add_tag(tag); } for (const auto& tag : line_meta.bm_tags) { bookmark_metadata::KNOWN_TAGS.insert(tag); } } else { line_meta.bm_tags.clear(); } vt->lss->set_line_meta_changed(); } vt->tc->set_user_mark(&textview_curses::BM_USER, vrowid, val); rowid += 1; while ((size_t) rowid < vt->lss->text_line_count()) { vis_line_t vl(rowid); content_line_t cl = vt->lss->at(vl); logline* ll = vt->lss->find_line(cl); if (ll->is_message()) { break; } vt->tc->set_user_mark(&textview_curses::BM_USER, vl, val); rowid += 1; } if (retval != SQLITE_ERROR) { retval = SQLITE_OK; } } return retval; } static sqlite3_module generic_vtab_module = { 0, /* iVersion */ vt_create, /* xCreate - create a vtable */ vt_connect, /* xConnect - associate a vtable with a connection */ vt_best_index, /* xBestIndex - best index */ vt_disconnect, /* xDisconnect - disassociate a vtable with a connection */ vt_destroy, /* xDestroy - destroy a vtable */ vt_open, /* xOpen - open a cursor */ vt_close, /* xClose - close a cursor */ vt_filter, /* xFilter - configure scan constraints */ vt_next, /* xNext - advance a cursor */ vt_eof, /* xEof - inidicate end of result set*/ vt_column, /* xColumn - read data */ vt_rowid, /* xRowid - read data */ vt_update, /* xUpdate - write data */ NULL, /* xBegin - begin transaction */ NULL, /* xSync - sync transaction */ NULL, /* xCommit - commit transaction */ NULL, /* xRollback - rollback transaction */ NULL, /* xFindFunction - function overloading */ }; static int progress_callback(void* ptr) { int retval = 0; if (log_vtab_data.lvd_progress != nullptr) { retval = log_vtab_data.lvd_progress(log_cursor_latest); } return retval; } log_vtab_manager::log_vtab_manager(sqlite3* memdb, textview_curses& tc, logfile_sub_source& lss) : vm_db(memdb), vm_textview(tc), vm_source(lss) { sqlite3_create_module( this->vm_db, "log_vtab_impl", &generic_vtab_module, this); sqlite3_progress_handler(memdb, 32, progress_callback, nullptr); } log_vtab_manager::~log_vtab_manager() { while (!this->vm_impls.empty()) { auto first_name = this->vm_impls.begin()->first; this->unregister_vtab(first_name); } } std::string log_vtab_manager::register_vtab(std::shared_ptr vi) { std::string retval; if (this->vm_impls.find(vi->get_name()) == this->vm_impls.end()) { auto_mem errmsg; auto_mem sql; int rc; this->vm_impls[vi->get_name()] = vi; sql = sqlite3_mprintf( "CREATE VIRTUAL TABLE %s " "USING log_vtab_impl(%s)", vi->get_name().get(), vi->get_name().get()); rc = sqlite3_exec(this->vm_db, sql, nullptr, nullptr, errmsg.out()); if (rc != SQLITE_OK) { retval = errmsg; } } else { retval = "a table with the given name already exists"; } return retval; } std::string log_vtab_manager::unregister_vtab(intern_string_t name) { std::string retval; if (this->vm_impls.find(name) == this->vm_impls.end()) { retval = fmt::format(FMT_STRING("unknown log line table -- {}"), name); } else { auto_mem sql; __attribute((unused)) int rc; sql = sqlite3_mprintf("DROP TABLE %s ", name.get()); rc = sqlite3_exec(this->vm_db, sql, NULL, NULL, NULL); this->vm_impls.erase(name); } return retval; } bool log_format_vtab_impl::next(log_cursor& lc, logfile_sub_source& lss) { lc.lc_curr_line = lc.lc_curr_line + vis_line_t(1); lc.lc_sub_index = 0; if (lc.is_eof()) { return true; } auto cl = content_line_t(lss.at(lc.lc_curr_line)); auto lf = lss.find(cl); auto lf_iter = lf->begin() + cl; uint8_t mod_id = lf_iter->get_module_id(); if (!lf_iter->is_message()) { return false; } auto format = lf->get_format(); if (format->get_name() == this->lfvi_format.get_name()) { return true; } else if (mod_id && mod_id == this->lfvi_format.lf_mod_index) { // XXX return true; } return false; }