diff options
Diffstat (limited to 'src/libnetdata/log/nd_log-format-logfmt.c')
| -rw-r--r-- | src/libnetdata/log/nd_log-format-logfmt.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/src/libnetdata/log/nd_log-format-logfmt.c b/src/libnetdata/log/nd_log-format-logfmt.c new file mode 100644 index 000000000..d65211dfc --- /dev/null +++ b/src/libnetdata/log/nd_log-format-logfmt.c @@ -0,0 +1,151 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#include "nd_log-internals.h" + +static bool needs_quotes_for_logfmt(const char *s) +{ + static bool safe_for_logfmt[256] = { + [' '] = true, ['!'] = true, ['"'] = false, ['#'] = true, ['$'] = true, ['%'] = true, ['&'] = true, + ['\''] = true, ['('] = true, [')'] = true, ['*'] = true, ['+'] = true, [','] = true, ['-'] = true, + ['.'] = true, ['/'] = true, ['0'] = true, ['1'] = true, ['2'] = true, ['3'] = true, ['4'] = true, + ['5'] = true, ['6'] = true, ['7'] = true, ['8'] = true, ['9'] = true, [':'] = true, [';'] = true, + ['<'] = true, ['='] = true, ['>'] = true, ['?'] = true, ['@'] = true, ['A'] = true, ['B'] = true, + ['C'] = true, ['D'] = true, ['E'] = true, ['F'] = true, ['G'] = true, ['H'] = true, ['I'] = true, + ['J'] = true, ['K'] = true, ['L'] = true, ['M'] = true, ['N'] = true, ['O'] = true, ['P'] = true, + ['Q'] = true, ['R'] = true, ['S'] = true, ['T'] = true, ['U'] = true, ['V'] = true, ['W'] = true, + ['X'] = true, ['Y'] = true, ['Z'] = true, ['['] = true, ['\\'] = false, [']'] = true, ['^'] = true, + ['_'] = true, ['`'] = true, ['a'] = true, ['b'] = true, ['c'] = true, ['d'] = true, ['e'] = true, + ['f'] = true, ['g'] = true, ['h'] = true, ['i'] = true, ['j'] = true, ['k'] = true, ['l'] = true, + ['m'] = true, ['n'] = true, ['o'] = true, ['p'] = true, ['q'] = true, ['r'] = true, ['s'] = true, + ['t'] = true, ['u'] = true, ['v'] = true, ['w'] = true, ['x'] = true, ['y'] = true, ['z'] = true, + ['{'] = true, ['|'] = true, ['}'] = true, ['~'] = true, [0x7f] = true, + }; + + if(!*s) + return true; + + while(*s) { + if(*s == '=' || isspace((uint8_t)*s) || !safe_for_logfmt[(uint8_t)*s]) + return true; + + s++; + } + + return false; +} + +static void string_to_logfmt(BUFFER *wb, const char *s) +{ + bool spaces = needs_quotes_for_logfmt(s); + + if(spaces) + buffer_fast_strcat(wb, "\"", 1); + + buffer_json_strcat(wb, s); + + if(spaces) + buffer_fast_strcat(wb, "\"", 1); +} + +void nd_logger_logfmt(BUFFER *wb, struct log_field *fields, size_t fields_max) { + + // --- FIELD_PARSER_VERSIONS --- + // + // IMPORTANT: + // THERE ARE 6 VERSIONS OF THIS CODE + // + // 1. journal (direct socket API), + // 2. journal (libsystemd API), + // 3. logfmt, + // 4. json, + // 5. convert to uint64 + // 6. convert to int64 + // + // UPDATE ALL OF THEM FOR NEW FEATURES OR FIXES + + CLEAN_BUFFER *tmp = NULL; + + for (size_t i = 0; i < fields_max; i++) { + if (!fields[i].entry.set || !fields[i].logfmt) + continue; + + const char *key = fields[i].logfmt; + + if(fields[i].annotator) { + const char *s = fields[i].annotator(&fields[i]); + if(!s) continue; + + if(buffer_strlen(wb)) + buffer_fast_strcat(wb, " ", 1); + + buffer_strcat(wb, key); + buffer_fast_strcat(wb, "=", 1); + string_to_logfmt(wb, s); + } + else { + if(buffer_strlen(wb)) + buffer_fast_strcat(wb, " ", 1); + + switch(fields[i].entry.type) { + case NDFT_TXT: + if(*fields[i].entry.txt) { + buffer_strcat(wb, key); + buffer_fast_strcat(wb, "=", 1); + string_to_logfmt(wb, fields[i].entry.txt); + } + break; + case NDFT_STR: + buffer_strcat(wb, key); + buffer_fast_strcat(wb, "=", 1); + string_to_logfmt(wb, string2str(fields[i].entry.str)); + break; + case NDFT_BFR: + if(buffer_strlen(fields[i].entry.bfr)) { + buffer_strcat(wb, key); + buffer_fast_strcat(wb, "=", 1); + string_to_logfmt(wb, buffer_tostring(fields[i].entry.bfr)); + } + break; + case NDFT_U64: + buffer_strcat(wb, key); + buffer_fast_strcat(wb, "=", 1); + buffer_print_uint64(wb, fields[i].entry.u64); + break; + case NDFT_I64: + buffer_strcat(wb, key); + buffer_fast_strcat(wb, "=", 1); + buffer_print_int64(wb, fields[i].entry.i64); + break; + case NDFT_DBL: + buffer_strcat(wb, key); + buffer_fast_strcat(wb, "=", 1); + buffer_print_netdata_double(wb, fields[i].entry.dbl); + break; + case NDFT_UUID: + if(!uuid_is_null(*fields[i].entry.uuid)) { + char u[UUID_COMPACT_STR_LEN]; + uuid_unparse_lower_compact(*fields[i].entry.uuid, u); + buffer_strcat(wb, key); + buffer_fast_strcat(wb, "=", 1); + buffer_fast_strcat(wb, u, sizeof(u) - 1); + } + break; + case NDFT_CALLBACK: { + if(!tmp) + tmp = buffer_create(1024, NULL); + else + buffer_flush(tmp); + if(fields[i].entry.cb.formatter(tmp, fields[i].entry.cb.formatter_data)) { + buffer_strcat(wb, key); + buffer_fast_strcat(wb, "=", 1); + string_to_logfmt(wb, buffer_tostring(tmp)); + } + } + break; + default: + buffer_strcat(wb, "UNHANDLED"); + break; + } + } + } +} |