// SPDX-License-Identifier: GPL-3.0-or-later #ifndef NETDATA_LOG_H #define NETDATA_LOG_H 1 # ifdef __cplusplus extern "C" { # endif #include "../libnetdata.h" #define ND_LOG_DEFAULT_THROTTLE_LOGS 1000 #define ND_LOG_DEFAULT_THROTTLE_PERIOD 60 typedef enum __attribute__((__packed__)) { NDLS_UNSET = 0, // internal use only NDLS_ACCESS, // access.log NDLS_ACLK, // aclk.log NDLS_COLLECTORS, // collectors.log NDLS_DAEMON, // error.log NDLS_HEALTH, // health.log NDLS_DEBUG, // debug.log // terminator _NDLS_MAX, } ND_LOG_SOURCES; typedef enum __attribute__((__packed__)) { NDLP_EMERG = LOG_EMERG, NDLP_ALERT = LOG_ALERT, NDLP_CRIT = LOG_CRIT, NDLP_ERR = LOG_ERR, NDLP_WARNING = LOG_WARNING, NDLP_NOTICE = LOG_NOTICE, NDLP_INFO = LOG_INFO, NDLP_DEBUG = LOG_DEBUG, } ND_LOG_FIELD_PRIORITY; typedef enum __attribute__((__packed__)) { // KEEP THESE IN THE SAME ORDER AS in thread_log_fields (log.c) // so that it easy to audit for missing fields NDF_STOP = 0, NDF_TIMESTAMP_REALTIME_USEC, // the timestamp of the log message - added automatically NDF_SYSLOG_IDENTIFIER, // the syslog identifier of the application - added automatically NDF_LOG_SOURCE, // DAEMON, COLLECTORS, HEALTH, ACCESS, ACLK - set at the log call NDF_PRIORITY, // the syslog priority (severity) - set at the log call NDF_ERRNO, // the ERRNO at the time of the log call - added automatically #if defined(OS_WINDOWS) NDF_WINERROR, // Windows GetLastError() #endif NDF_INVOCATION_ID, // the INVOCATION_ID of Netdata - added automatically NDF_LINE, // the source code file line number - added automatically NDF_FILE, // the source code filename - added automatically NDF_FUNC, // the source code function - added automatically NDF_TID, // the thread ID of the thread logging - added automatically NDF_THREAD_TAG, // the thread tag of the thread logging - added automatically NDF_MESSAGE_ID, // for specific events NDF_MODULE, // for internal plugin module, all other get the NDF_THREAD_TAG NDF_NIDL_NODE, // the node / rrdhost currently being worked NDF_NIDL_INSTANCE, // the instance / rrdset currently being worked NDF_NIDL_CONTEXT, // the context of the instance currently being worked NDF_NIDL_DIMENSION, // the dimension / rrddim currently being worked // web server, aclk and stream receiver NDF_SRC_TRANSPORT, // the transport we received the request, one of: http, https, pluginsd // Netdata Cloud Related NDF_ACCOUNT_ID, NDF_USER_NAME, NDF_USER_ROLE, NDF_USER_ACCESS, // web server and stream receiver NDF_SRC_IP, // the streaming / web server source IP NDF_SRC_PORT, // the streaming / web server source Port NDF_SRC_FORWARDED_HOST, NDF_SRC_FORWARDED_FOR, NDF_SRC_CAPABILITIES, // the stream receiver capabilities // stream sender (established links) NDF_DST_TRANSPORT, // the transport we send the request, one of: http, https NDF_DST_IP, // the destination streaming IP NDF_DST_PORT, // the destination streaming Port NDF_DST_CAPABILITIES, // the destination streaming capabilities // web server, aclk and stream receiver NDF_REQUEST_METHOD, // for http like requests, the http request method NDF_RESPONSE_CODE, // for http like requests, the http response code, otherwise a status string // web server (all), aclk (queries) NDF_CONNECTION_ID, // the web server connection ID NDF_TRANSACTION_ID, // the web server and API transaction ID NDF_RESPONSE_SENT_BYTES, // for http like requests, the response bytes NDF_RESPONSE_SIZE_BYTES, // for http like requests, the uncompressed response size NDF_RESPONSE_PREPARATION_TIME_USEC, // for http like requests, the preparation time NDF_RESPONSE_SENT_TIME_USEC, // for http like requests, the time to send the response back NDF_RESPONSE_TOTAL_TIME_USEC, // for http like requests, the total time to complete the response // health alerts NDF_ALERT_ID, NDF_ALERT_UNIQUE_ID, NDF_ALERT_EVENT_ID, NDF_ALERT_TRANSITION_ID, NDF_ALERT_CONFIG_HASH, NDF_ALERT_NAME, NDF_ALERT_CLASS, NDF_ALERT_COMPONENT, NDF_ALERT_TYPE, NDF_ALERT_EXEC, NDF_ALERT_RECIPIENT, NDF_ALERT_DURATION, NDF_ALERT_VALUE, NDF_ALERT_VALUE_OLD, NDF_ALERT_STATUS, NDF_ALERT_STATUS_OLD, NDF_ALERT_SOURCE, NDF_ALERT_UNITS, NDF_ALERT_SUMMARY, NDF_ALERT_INFO, NDF_ALERT_NOTIFICATION_REALTIME_USEC, // NDF_ALERT_FLAGS, // put new items here // leave the request URL and the message last NDF_REQUEST, // the request we are currently working on NDF_MESSAGE, // the log message, if any // terminator _NDF_MAX, } ND_LOG_FIELD_ID; typedef enum __attribute__((__packed__)) { NDFT_UNSET = 0, NDFT_TXT, NDFT_STR, NDFT_BFR, NDFT_U64, NDFT_I64, NDFT_DBL, NDFT_UUID, NDFT_CALLBACK, } ND_LOG_STACK_FIELD_TYPE; void errno_clear(void); void nd_log_set_user_settings(ND_LOG_SOURCES source, const char *setting); void nd_log_set_facility(const char *facility); void nd_log_set_priority_level(const char *setting); void nd_log_initialize(void); void nd_log_reopen_log_files(bool log); void chown_open_file(int fd, uid_t uid, gid_t gid); void nd_log_chown_log_files(uid_t uid, gid_t gid); void nd_log_set_flood_protection(size_t logs, time_t period); void nd_log_initialize_for_external_plugins(const char *name); void nd_log_reopen_log_files_for_spawn_server(void); bool nd_log_journal_socket_available(void); ND_LOG_FIELD_ID nd_log_field_id_by_name(const char *field, size_t len); int nd_log_priority2id(const char *priority); const char *nd_log_id2priority(ND_LOG_FIELD_PRIORITY priority); const char *nd_log_method_for_external_plugins(const char *s); int nd_log_health_fd(void); int nd_log_collectors_fd(void); typedef bool (*log_formatter_callback_t)(BUFFER *wb, void *data); struct log_stack_entry { ND_LOG_FIELD_ID id; ND_LOG_STACK_FIELD_TYPE type; bool set; union { const char *txt; struct netdata_string *str; BUFFER *bfr; uint64_t u64; int64_t i64; double dbl; const nd_uuid_t *uuid; struct { log_formatter_callback_t formatter; void *formatter_data; } cb; }; }; #define ND_LOG_STACK _cleanup_(log_stack_pop) struct log_stack_entry #define ND_LOG_STACK_PUSH(lgs) log_stack_push(lgs) #define ND_LOG_FIELD_TXT(field, value) (struct log_stack_entry){ .id = (field), .type = NDFT_TXT, .txt = (value), .set = true, } #define ND_LOG_FIELD_STR(field, value) (struct log_stack_entry){ .id = (field), .type = NDFT_STR, .str = (value), .set = true, } #define ND_LOG_FIELD_BFR(field, value) (struct log_stack_entry){ .id = (field), .type = NDFT_BFR, .bfr = (value), .set = true, } #define ND_LOG_FIELD_U64(field, value) (struct log_stack_entry){ .id = (field), .type = NDFT_U64, .u64 = (value), .set = true, } #define ND_LOG_FIELD_I64(field, value) (struct log_stack_entry){ .id = (field), .type = NDFT_I64, .i64 = (value), .set = true, } #define ND_LOG_FIELD_DBL(field, value) (struct log_stack_entry){ .id = (field), .type = NDFT_DBL, .dbl = (value), .set = true, } #define ND_LOG_FIELD_CB(field, func, data) (struct log_stack_entry){ .id = (field), .type = NDFT_CALLBACK, .cb = { .formatter = (func), .formatter_data = (data) }, .set = true, } #define ND_LOG_FIELD_UUID(field, value) (struct log_stack_entry){ .id = (field), .type = NDFT_UUID, .uuid = (value), .set = true, } #define ND_LOG_FIELD_END() (struct log_stack_entry){ .id = NDF_STOP, .type = NDFT_UNSET, .set = false, } void log_stack_pop(void *ptr); void log_stack_push(struct log_stack_entry *lgs); #define D_WEB_BUFFER 0x0000000000000001 #define D_WEB_CLIENT 0x0000000000000002 #define D_LISTENER 0x0000000000000004 #define D_WEB_DATA 0x0000000000000008 #define D_OPTIONS 0x0000000000000010 #define D_PROCNETDEV_LOOP 0x0000000000000020 #define D_RRD_STATS 0x0000000000000040 #define D_WEB_CLIENT_ACCESS 0x0000000000000080 #define D_TC_LOOP 0x0000000000000100 #define D_DEFLATE 0x0000000000000200 #define D_CONFIG 0x0000000000000400 #define D_PLUGINSD 0x0000000000000800 #define D_CHILDS 0x0000000000001000 #define D_EXIT 0x0000000000002000 #define D_CHECKS 0x0000000000004000 #define D_NFACCT_LOOP 0x0000000000008000 #define D_PROCFILE 0x0000000000010000 #define D_RRD_CALLS 0x0000000000020000 #define D_DICTIONARY 0x0000000000040000 #define D_MEMORY 0x0000000000080000 #define D_CGROUP 0x0000000000100000 #define D_REGISTRY 0x0000000000200000 #define D_VARIABLES 0x0000000000400000 #define D_HEALTH 0x0000000000800000 #define D_CONNECT_TO 0x0000000001000000 #define D_RRDHOST 0x0000000002000000 #define D_LOCKS 0x0000000004000000 #define D_EXPORTING 0x0000000008000000 #define D_STATSD 0x0000000010000000 #define D_POLLFD 0x0000000020000000 #define D_STREAM 0x0000000040000000 #define D_ANALYTICS 0x0000000080000000 #define D_RRDENGINE 0x0000000100000000 #define D_ACLK 0x0000000200000000 #define D_REPLICATION 0x0000002000000000 #define D_SYSTEM 0x8000000000000000 extern uint64_t debug_flags; extern const char *program_name; #ifdef ENABLE_ACLK extern int aclklog_enabled; #endif #define LOG_DATE_LENGTH 26 void log_date(char *buffer, size_t len, time_t now); static inline void debug_dummy(void) {} void nd_log_limits_reset(void); void nd_log_limits_unlimited(void); #define NDLP_INFO_STR "info" #ifdef NETDATA_INTERNAL_CHECKS #define netdata_log_debug(type, args...) do { if(unlikely(debug_flags & type)) netdata_logger(NDLS_DEBUG, NDLP_DEBUG, __FILE__, __FUNCTION__, __LINE__, ##args); } while(0) #define internal_error(condition, args...) do { if(unlikely(condition)) netdata_logger(NDLS_DAEMON, NDLP_DEBUG, __FILE__, __FUNCTION__, __LINE__, ##args); } while(0) #define internal_fatal(condition, args...) do { if(unlikely(condition)) netdata_logger_fatal(__FILE__, __FUNCTION__, __LINE__, ##args); } while(0) #else #define netdata_log_debug(type, args...) debug_dummy() #define internal_error(args...) debug_dummy() #define internal_fatal(args...) debug_dummy() #endif #define fatal(args...) netdata_logger_fatal(__FILE__, __FUNCTION__, __LINE__, ##args) #define fatal_assert(expr) ((expr) ? (void)(0) : netdata_logger_fatal(__FILE__, __FUNCTION__, __LINE__, "Assertion `%s' failed", #expr)) // ---------------------------------------------------------------------------- // normal logging void netdata_logger(ND_LOG_SOURCES source, ND_LOG_FIELD_PRIORITY priority, const char *file, const char *function, unsigned long line, const char *fmt, ... ) PRINTFLIKE(6, 7); #define nd_log(NDLS, NDLP, args...) netdata_logger(NDLS, NDLP, __FILE__, __FUNCTION__, __LINE__, ##args) #define nd_log_daemon(NDLP, args...) netdata_logger(NDLS_DAEMON, NDLP, __FILE__, __FUNCTION__, __LINE__, ##args) #define nd_log_collector(NDLP, args...) netdata_logger(NDLS_COLLECTORS, NDLP, __FILE__, __FUNCTION__, __LINE__, ##args) #define netdata_log_info(args...) netdata_logger(NDLS_DAEMON, NDLP_INFO, __FILE__, __FUNCTION__, __LINE__, ##args) #define netdata_log_error(args...) netdata_logger(NDLS_DAEMON, NDLP_ERR, __FILE__, __FUNCTION__, __LINE__, ##args) #define collector_info(args...) netdata_logger(NDLS_COLLECTORS, NDLP_INFO, __FILE__, __FUNCTION__, __LINE__, ##args) #define collector_error(args...) netdata_logger(NDLS_COLLECTORS, NDLP_ERR, __FILE__, __FUNCTION__, __LINE__, ##args) #define log_aclk_message_bin(__data, __data_len, __tx, __mqtt_topic, __message_name) \ nd_log(NDLS_ACLK, NDLP_INFO, \ "direction:%s message:'%s' topic:'%s' json:'%.*s'", \ (__tx) ? "OUTGOING" : "INCOMING", __message_name, __mqtt_topic, (int)(__data_len), __data) // ---------------------------------------------------------------------------- // logging with limits typedef struct error_with_limit { SPINLOCK spinlock; time_t log_every; size_t count; time_t last_logged; usec_t sleep_ut; } ERROR_LIMIT; #define nd_log_limit_static_global_var(var, log_every_secs, sleep_usecs) static ERROR_LIMIT var = { .last_logged = 0, .count = 0, .log_every = (log_every_secs), .sleep_ut = (sleep_usecs) } #define nd_log_limit_static_thread_var(var, log_every_secs, sleep_usecs) static __thread ERROR_LIMIT var = { .last_logged = 0, .count = 0, .log_every = (log_every_secs), .sleep_ut = (sleep_usecs) } void netdata_logger_with_limit(ERROR_LIMIT *erl, ND_LOG_SOURCES source, ND_LOG_FIELD_PRIORITY priority, const char *file, const char *function, unsigned long line, const char *fmt, ... ) PRINTFLIKE(7, 8); #define nd_log_limit(erl, NDLS, NDLP, args...) netdata_logger_with_limit(erl, NDLS, NDLP, __FILE__, __FUNCTION__, __LINE__, ##args) // ---------------------------------------------------------------------------- void netdata_logger_fatal( const char *file, const char *function, unsigned long line, const char *fmt, ... ) NORETURN PRINTFLIKE(4, 5); # ifdef __cplusplus } # endif #endif /* NETDATA_LOG_H */