| /* |
| * Promex is a Prometheus exporter for HAProxy |
| * |
| * It is highly inspired by the official Prometheus exporter. |
| * See: https://github.com/prometheus/haproxy_exporter |
| * |
| * Copyright 2019 Christopher Faulet <cfaulet@haproxy.com> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| * |
| */ |
| |
| #include <haproxy/action-t.h> |
| #include <haproxy/api.h> |
| #include <haproxy/applet.h> |
| #include <haproxy/backend.h> |
| #include <haproxy/cfgparse.h> |
| #include <haproxy/check.h> |
| #include <haproxy/conn_stream.h> |
| #include <haproxy/cs_utils.h> |
| #include <haproxy/frontend.h> |
| #include <haproxy/global.h> |
| #include <haproxy/http.h> |
| #include <haproxy/http_ana.h> |
| #include <haproxy/http_htx.h> |
| #include <haproxy/htx.h> |
| #include <haproxy/list.h> |
| #include <haproxy/listener.h> |
| #include <haproxy/log.h> |
| #include <haproxy/proxy.h> |
| #include <haproxy/sample.h> |
| #include <haproxy/server.h> |
| #include <haproxy/stats.h> |
| #include <haproxy/stream.h> |
| #include <haproxy/task.h> |
| #include <haproxy/tools.h> |
| #include <haproxy/version.h> |
| |
| /* Prometheus exporter applet states (appctx->st0) */ |
| enum { |
| PROMEX_ST_INIT = 0, /* initialized */ |
| PROMEX_ST_HEAD, /* send headers before dump */ |
| PROMEX_ST_DUMP, /* dumping stats */ |
| PROMEX_ST_DONE, /* finished */ |
| PROMEX_ST_END, /* treatment terminated */ |
| }; |
| |
| /* Prometheus exporter dumper states (appctx->st1) */ |
| enum { |
| PROMEX_DUMPER_INIT = 0, /* initialized */ |
| PROMEX_DUMPER_GLOBAL, /* dump metrics of globals */ |
| PROMEX_DUMPER_FRONT, /* dump metrics of frontend proxies */ |
| PROMEX_DUMPER_BACK, /* dump metrics of backend proxies */ |
| PROMEX_DUMPER_LI, /* dump metrics of listeners */ |
| PROMEX_DUMPER_SRV, /* dump metrics of servers */ |
| PROMEX_DUMPER_STICKTABLE, /* dump metrics of stick tables */ |
| PROMEX_DUMPER_DONE, /* finished */ |
| }; |
| |
| /* Prometheus exporter flags (ctx->flags) */ |
| #define PROMEX_FL_METRIC_HDR 0x00000001 |
| #define PROMEX_FL_INFO_METRIC 0x00000002 |
| #define PROMEX_FL_FRONT_METRIC 0x00000004 |
| #define PROMEX_FL_BACK_METRIC 0x00000008 |
| #define PROMEX_FL_SRV_METRIC 0x00000010 |
| #define PROMEX_FL_LI_METRIC 0x00000020 |
| #define PROMEX_FL_STICKTABLE_METRIC 0x00000040 |
| #define PROMEX_FL_SCOPE_GLOBAL 0x00000080 |
| #define PROMEX_FL_SCOPE_FRONT 0x00000100 |
| #define PROMEX_FL_SCOPE_BACK 0x00000200 |
| #define PROMEX_FL_SCOPE_SERVER 0x00000400 |
| #define PROMEX_FL_SCOPE_LI 0x00000800 |
| #define PROMEX_FL_SCOPE_STICKTABLE 0x00001000 |
| #define PROMEX_FL_NO_MAINT_SRV 0x00002000 |
| |
| #define PROMEX_FL_SCOPE_ALL (PROMEX_FL_SCOPE_GLOBAL | PROMEX_FL_SCOPE_FRONT | \ |
| PROMEX_FL_SCOPE_LI | PROMEX_FL_SCOPE_BACK | \ |
| PROMEX_FL_SCOPE_SERVER | PROMEX_FL_SCOPE_STICKTABLE) |
| |
| /* the context of the applet */ |
| struct promex_ctx { |
| struct proxy *px; /* current proxy */ |
| struct stktable *st; /* current table */ |
| struct listener *li; /* current listener */ |
| struct server *sv; /* current server */ |
| unsigned int flags; /* PROMEX_FL_* */ |
| unsigned field_num; /* current field number (ST_F_* etc) */ |
| int obj_state; /* current state among PROMEX_{FRONT|BACK|SRV|LI}_STATE_* */ |
| }; |
| |
| /* Promtheus metric type (gauge or counter) */ |
| enum promex_mt_type { |
| PROMEX_MT_GAUGE = 1, |
| PROMEX_MT_COUNTER = 2, |
| }; |
| |
| /* The max length for metrics name. It is a hard limit but it should be |
| * enough. |
| */ |
| #define PROMEX_MAX_NAME_LEN 128 |
| |
| /* The expected max length for a metric dump, including its header lines. It is |
| * just a soft limit to avoid extra work. We don't try to dump a metric if less |
| * than this size is available in the HTX. |
| */ |
| #define PROMEX_MAX_METRIC_LENGTH 512 |
| |
| /* The max number of labels per metric */ |
| #define PROMEX_MAX_LABELS 8 |
| |
| /* Describe a prometheus metric */ |
| struct promex_metric { |
| const struct ist n; /* The metric name */ |
| enum promex_mt_type type; /* The metric type (gauge or counter) */ |
| unsigned int flags; /* PROMEX_FL_* flags */ |
| }; |
| |
| /* Describe a prometheus metric label. It is just a key/value pair */ |
| struct promex_label { |
| struct ist name; |
| struct ist value; |
| }; |
| |
| /* Global metrics */ |
| const struct promex_metric promex_global_metrics[INF_TOTAL_FIELDS] = { |
| //[INF_NAME] ignored |
| //[INF_VERSION], ignored |
| //[INF_RELEASE_DATE] ignored |
| [INF_NBTHREAD] = { .n = IST("nbthread"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_NBPROC] = { .n = IST("nbproc"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_PROCESS_NUM] = { .n = IST("relative_process_id"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| //[INF_PID] ignored |
| //[INF_UPTIME] ignored |
| [INF_UPTIME_SEC] = { .n = IST("uptime_seconds"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_START_TIME_SEC] = { .n = IST("start_time_seconds"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| //[INF_MEMMAX_MB] ignored |
| [INF_MEMMAX_BYTES] = { .n = IST("max_memory_bytes"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| //[INF_POOL_ALLOC_MB] ignored |
| [INF_POOL_ALLOC_BYTES] = { .n = IST("pool_allocated_bytes"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| //[INF_POOL_USED_MB] ignored |
| [INF_POOL_USED_BYTES] = { .n = IST("pool_used_bytes"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_POOL_FAILED] = { .n = IST("pool_failures_total"), .type = PROMEX_MT_COUNTER, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_ULIMIT_N] = { .n = IST("max_fds"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_MAXSOCK] = { .n = IST("max_sockets"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_MAXCONN] = { .n = IST("max_connections"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_HARD_MAXCONN] = { .n = IST("hard_max_connections"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_CURR_CONN] = { .n = IST("current_connections"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_CUM_CONN] = { .n = IST("connections_total"), .type = PROMEX_MT_COUNTER, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_CUM_REQ] = { .n = IST("requests_total"), .type = PROMEX_MT_COUNTER, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_MAX_SSL_CONNS] = { .n = IST("max_ssl_connections"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_CURR_SSL_CONNS] = { .n = IST("current_ssl_connections"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_CUM_SSL_CONNS] = { .n = IST("ssl_connections_total"), .type = PROMEX_MT_COUNTER, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_MAXPIPES] = { .n = IST("max_pipes"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_PIPES_USED] = { .n = IST("pipes_used_total"), .type = PROMEX_MT_COUNTER, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_PIPES_FREE] = { .n = IST("pipes_free_total"), .type = PROMEX_MT_COUNTER, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_CONN_RATE] = { .n = IST("current_connection_rate"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_CONN_RATE_LIMIT] = { .n = IST("limit_connection_rate"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_MAX_CONN_RATE] = { .n = IST("max_connection_rate"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_SESS_RATE] = { .n = IST("current_session_rate"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_SESS_RATE_LIMIT] = { .n = IST("limit_session_rate"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_MAX_SESS_RATE] = { .n = IST("max_session_rate"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_SSL_RATE] = { .n = IST("current_ssl_rate"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_SSL_RATE_LIMIT] = { .n = IST("limit_ssl_rate"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_MAX_SSL_RATE] = { .n = IST("max_ssl_rate"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_SSL_FRONTEND_KEY_RATE] = { .n = IST("current_frontend_ssl_key_rate"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_SSL_FRONTEND_MAX_KEY_RATE] = { .n = IST("max_frontend_ssl_key_rate"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_SSL_FRONTEND_SESSION_REUSE_PCT] = { .n = IST("frontend_ssl_reuse"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_SSL_BACKEND_KEY_RATE] = { .n = IST("current_backend_ssl_key_rate"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_SSL_BACKEND_MAX_KEY_RATE] = { .n = IST("max_backend_ssl_key_rate"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_SSL_CACHE_LOOKUPS] = { .n = IST("ssl_cache_lookups_total"), .type = PROMEX_MT_COUNTER, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_SSL_CACHE_MISSES] = { .n = IST("ssl_cache_misses_total"), .type = PROMEX_MT_COUNTER, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_COMPRESS_BPS_IN] = { .n = IST("http_comp_bytes_in_total"), .type = PROMEX_MT_COUNTER, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_COMPRESS_BPS_OUT] = { .n = IST("http_comp_bytes_out_total"), .type = PROMEX_MT_COUNTER, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_COMPRESS_BPS_RATE_LIM] = { .n = IST("limit_http_comp"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_ZLIB_MEM_USAGE] = { .n = IST("current_zlib_memory"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_MAX_ZLIB_MEM_USAGE] = { .n = IST("max_zlib_memory"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_TASKS] = { .n = IST("current_tasks"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_RUN_QUEUE] = { .n = IST("current_run_queue"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_IDLE_PCT] = { .n = IST("idle_time_percent"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| //[INF_NODE] ignored |
| //[INF_DESCRIPTION] ignored |
| [INF_STOPPING] = { .n = IST("stopping"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_JOBS] = { .n = IST("jobs"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_UNSTOPPABLE_JOBS] = { .n = IST("unstoppable_jobs"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_LISTENERS] = { .n = IST("listeners"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_ACTIVE_PEERS] = { .n = IST("active_peers"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_CONNECTED_PEERS] = { .n = IST("connected_peers"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_DROPPED_LOGS] = { .n = IST("dropped_logs_total"), .type = PROMEX_MT_COUNTER, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_BUSY_POLLING] = { .n = IST("busy_polling_enabled"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_FAILED_RESOLUTIONS] = { .n = IST("failed_resolutions"), .type = PROMEX_MT_COUNTER, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_TOTAL_BYTES_OUT] = { .n = IST("bytes_out_total"), .type = PROMEX_MT_COUNTER, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_TOTAL_SPLICED_BYTES_OUT] = { .n = IST("spliced_bytes_out_total"), .type = PROMEX_MT_COUNTER, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_BYTES_OUT_RATE] = { .n = IST("bytes_out_rate"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| //[INF_DEBUG_COMMANDS_ISSUED] ignored |
| [INF_CUM_LOG_MSGS] = { .n = IST("recv_logs_total"), .type = PROMEX_MT_COUNTER, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_BUILD_INFO] = { .n = IST("build_info"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| }; |
| |
| /* frontend/backend/server fields */ |
| const struct promex_metric promex_st_metrics[ST_F_TOTAL_FIELDS] = { |
| //[ST_F_PXNAME] ignored |
| //[ST_F_SVNAME] ignored |
| [ST_F_QCUR] = { .n = IST("current_queue"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_QMAX] = { .n = IST("max_queue"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_SCUR] = { .n = IST("current_sessions"), .type = PROMEX_MT_GAUGE, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_LI_METRIC | PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_SMAX] = { .n = IST("max_sessions"), .type = PROMEX_MT_GAUGE, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_LI_METRIC | PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_SLIM] = { .n = IST("limit_sessions"), .type = PROMEX_MT_GAUGE, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_LI_METRIC | PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_STOT] = { .n = IST("sessions_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_LI_METRIC | PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_BIN] = { .n = IST("bytes_in_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_LI_METRIC | PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_BOUT] = { .n = IST("bytes_out_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_LI_METRIC | PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_DREQ] = { .n = IST("requests_denied_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_LI_METRIC | PROMEX_FL_BACK_METRIC ) }, |
| [ST_F_DRESP] = { .n = IST("responses_denied_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_LI_METRIC | PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_EREQ] = { .n = IST("request_errors_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_LI_METRIC ) }, |
| [ST_F_ECON] = { .n = IST("connection_errors_total"), .type = PROMEX_MT_COUNTER, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_ERESP] = { .n = IST("response_errors_total"), .type = PROMEX_MT_COUNTER, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_WRETR] = { .n = IST("retry_warnings_total"), .type = PROMEX_MT_COUNTER, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_WREDIS] = { .n = IST("redispatch_warnings_total"), .type = PROMEX_MT_COUNTER, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_STATUS] = { .n = IST("status"), .type = PROMEX_MT_GAUGE, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_LI_METRIC | PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_WEIGHT] = { .n = IST("weight"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_ACT] = { .n = IST("active_servers"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_BACK_METRIC ) }, |
| [ST_F_BCK] = { .n = IST("backup_servers"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_BACK_METRIC ) }, |
| [ST_F_CHKFAIL] = { .n = IST("check_failures_total"), .type = PROMEX_MT_COUNTER, .flags = ( PROMEX_FL_SRV_METRIC) }, |
| [ST_F_CHKDOWN] = { .n = IST("check_up_down_total"), .type = PROMEX_MT_COUNTER, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_LASTCHG] = { .n = IST("check_last_change_seconds"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_DOWNTIME] = { .n = IST("downtime_seconds_total"), .type = PROMEX_MT_COUNTER, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_QLIMIT] = { .n = IST("queue_limit"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_SRV_METRIC) }, |
| //[ST_F_PID] ignored |
| //[ST_F_IID] ignored |
| //[ST_F_SID] ignored |
| [ST_F_THROTTLE] = { .n = IST("current_throttle"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_SRV_METRIC) }, |
| [ST_F_LBTOT] = { .n = IST("loadbalanced_total"), .type = PROMEX_MT_COUNTER, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| //[ST_F_TRACKED] ignored |
| //[ST_F_TYPE] ignored |
| //[ST_F_RATE] ignored |
| [ST_F_RATE_LIM] = { .n = IST("limit_session_rate"), .type = PROMEX_MT_GAUGE, .flags = (PROMEX_FL_FRONT_METRIC ) }, |
| [ST_F_RATE_MAX] = { .n = IST("max_session_rate"), .type = PROMEX_MT_GAUGE, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_CHECK_STATUS] = { .n = IST("check_status"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_SRV_METRIC) }, |
| [ST_F_CHECK_CODE] = { .n = IST("check_code"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_SRV_METRIC) }, |
| [ST_F_CHECK_DURATION] = { .n = IST("check_duration_seconds"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_SRV_METRIC) }, |
| [ST_F_HRSP_1XX] = { .n = IST("http_responses_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_HRSP_2XX] = { .n = IST("http_responses_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_HRSP_3XX] = { .n = IST("http_responses_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_HRSP_4XX] = { .n = IST("http_responses_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_HRSP_5XX] = { .n = IST("http_responses_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_HRSP_OTHER] = { .n = IST("http_responses_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| //[ST_F_HANAFAIL] ignored |
| //[ST_F_REQ_RATE] ignored |
| [ST_F_REQ_RATE_MAX] = { .n = IST("http_requests_rate_max"), .type = PROMEX_MT_GAUGE, .flags = (PROMEX_FL_FRONT_METRIC ) }, |
| [ST_F_REQ_TOT] = { .n = IST("http_requests_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_BACK_METRIC ) }, |
| [ST_F_CLI_ABRT] = { .n = IST("client_aborts_total"), .type = PROMEX_MT_COUNTER, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_SRV_ABRT] = { .n = IST("server_aborts_total"), .type = PROMEX_MT_COUNTER, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_COMP_IN] = { .n = IST("http_comp_bytes_in_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_BACK_METRIC ) }, |
| [ST_F_COMP_OUT] = { .n = IST("http_comp_bytes_out_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_BACK_METRIC ) }, |
| [ST_F_COMP_BYP] = { .n = IST("http_comp_bytes_bypassed_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_BACK_METRIC ) }, |
| [ST_F_COMP_RSP] = { .n = IST("http_comp_responses_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_BACK_METRIC ) }, |
| [ST_F_LASTSESS] = { .n = IST("last_session_seconds"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| //[ST_F_LAST_CHK] ignored |
| //[ST_F_LAST_AGT] ignored |
| [ST_F_QTIME] = { .n = IST("queue_time_average_seconds"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_CTIME] = { .n = IST("connect_time_average_seconds"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_RTIME] = { .n = IST("response_time_average_seconds"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_TTIME] = { .n = IST("total_time_average_seconds"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| //[ST_F_AGENT_STATUS] ignored |
| //[ST_F_AGENT_CODE] ignored |
| //[ST_F_AGENT_DURATION] ignored |
| //[ST_F_CHECK_DESC] ignored |
| //[ST_F_AGENT_DESC] ignored |
| //[ST_F_CHECK_RISE] ignored |
| //[ST_F_CHECK_FALL] ignored |
| //[ST_F_CHECK_HEALTH] ignored |
| //[ST_F_AGENT_RISE] ignored |
| //[ST_F_AGENT_FALL] ignored |
| //[ST_F_AGENT_HEALTH] ignored |
| //[ST_F_ADDR] ignored |
| //[ST_F_COOKIE] ignored |
| //[ST_F_MODE] ignored |
| //[ST_F_ALGO] ignored |
| //[ST_F_CONN_RATE] ignored |
| [ST_F_CONN_RATE_MAX] = { .n = IST("connections_rate_max"), .type = PROMEX_MT_GAUGE, .flags = (PROMEX_FL_FRONT_METRIC ) }, |
| [ST_F_CONN_TOT] = { .n = IST("connections_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC ) }, |
| [ST_F_INTERCEPTED] = { .n = IST("intercepted_requests_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC ) }, |
| [ST_F_DCON] = { .n = IST("denied_connections_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_LI_METRIC ) }, |
| [ST_F_DSES] = { .n = IST("denied_sessions_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_LI_METRIC ) }, |
| [ST_F_WREW] = { .n = IST("failed_header_rewriting_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_LI_METRIC | PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_CONNECT] = { .n = IST("connection_attempts_total"), .type = PROMEX_MT_COUNTER, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_REUSE] = { .n = IST("connection_reuses_total"), .type = PROMEX_MT_COUNTER, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_CACHE_LOOKUPS] = { .n = IST("http_cache_lookups_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_BACK_METRIC ) }, |
| [ST_F_CACHE_HITS] = { .n = IST("http_cache_hits_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_BACK_METRIC ) }, |
| [ST_F_SRV_ICUR] = { .n = IST("idle_connections_current"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_SRV_METRIC) }, |
| [ST_F_SRV_ILIM] = { .n = IST("idle_connections_limit"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_SRV_METRIC) }, |
| [ST_F_QT_MAX] = { .n = IST("max_queue_time_seconds"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_CT_MAX] = { .n = IST("max_connect_time_seconds"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_RT_MAX] = { .n = IST("max_response_time_seconds"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_TT_MAX] = { .n = IST("max_total_time_seconds"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_EINT] = { .n = IST("internal_errors_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC | PROMEX_FL_LI_METRIC | PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_IDLE_CONN_CUR] = { .n = IST("unsafe_idle_connections_current"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_SRV_METRIC) }, |
| [ST_F_SAFE_CONN_CUR] = { .n = IST("safe_idle_connections_current"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_SRV_METRIC) }, |
| [ST_F_USED_CONN_CUR] = { .n = IST("used_connections_current"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_SRV_METRIC) }, |
| [ST_F_NEED_CONN_EST] = { .n = IST("need_connections_current"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_SRV_METRIC) }, |
| [ST_F_UWEIGHT] = { .n = IST("uweight"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_AGG_SRV_CHECK_STATUS] = { .n = IST("agg_server_check_status"), .type = PROMEX_MT_GAUGE, .flags = ( PROMEX_FL_BACK_METRIC ) }, |
| }; |
| |
| /* Description of overridden stats fields */ |
| const struct ist promex_st_metric_desc[ST_F_TOTAL_FIELDS] = { |
| [ST_F_STATUS] = IST("Current status of the service, per state label value."), |
| [ST_F_CHECK_STATUS] = IST("Status of last health check, per state label value."), |
| [ST_F_CHECK_CODE] = IST("layer5-7 code, if available of the last health check."), |
| [ST_F_CHECK_DURATION] = IST("Total duration of the latest server health check, in seconds."), |
| [ST_F_QTIME] = IST("Avg. queue time for last 1024 successful connections."), |
| [ST_F_CTIME] = IST("Avg. connect time for last 1024 successful connections."), |
| [ST_F_RTIME] = IST("Avg. response time for last 1024 successful connections."), |
| [ST_F_TTIME] = IST("Avg. total time for last 1024 successful connections."), |
| [ST_F_QT_MAX] = IST("Maximum observed time spent in the queue"), |
| [ST_F_CT_MAX] = IST("Maximum observed time spent waiting for a connection to complete"), |
| [ST_F_RT_MAX] = IST("Maximum observed time spent waiting for a server response"), |
| [ST_F_TT_MAX] = IST("Maximum observed total request+response time (request+queue+connect+response+processing)"), |
| }; |
| |
| /* stick table base fields */ |
| enum sticktable_field { |
| STICKTABLE_SIZE = 0, |
| STICKTABLE_USED, |
| /* must always be the last one */ |
| STICKTABLE_TOTAL_FIELDS |
| }; |
| |
| const struct promex_metric promex_sticktable_metrics[STICKTABLE_TOTAL_FIELDS] = { |
| [STICKTABLE_SIZE] = { .n = IST("size"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_STICKTABLE_METRIC }, |
| [STICKTABLE_USED] = { .n = IST("used"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_STICKTABLE_METRIC }, |
| }; |
| |
| /* stick table base description */ |
| const struct ist promex_sticktable_metric_desc[STICKTABLE_TOTAL_FIELDS] = { |
| [STICKTABLE_SIZE] = IST("Stick table size."), |
| [STICKTABLE_USED] = IST("Number of entries used in this stick table."), |
| }; |
| |
| /* Specific labels for all ST_F_HRSP_* fields */ |
| const struct ist promex_hrsp_code[1 + ST_F_HRSP_OTHER - ST_F_HRSP_1XX] = { |
| [ST_F_HRSP_1XX - ST_F_HRSP_1XX] = IST("1xx"), |
| [ST_F_HRSP_2XX - ST_F_HRSP_1XX] = IST("2xx"), |
| [ST_F_HRSP_3XX - ST_F_HRSP_1XX] = IST("3xx"), |
| [ST_F_HRSP_4XX - ST_F_HRSP_1XX] = IST("4xx"), |
| [ST_F_HRSP_5XX - ST_F_HRSP_1XX] = IST("5xx"), |
| [ST_F_HRSP_OTHER - ST_F_HRSP_1XX] = IST("other"), |
| }; |
| |
| enum promex_front_state { |
| PROMEX_FRONT_STATE_DOWN = 0, |
| PROMEX_FRONT_STATE_UP, |
| |
| PROMEX_FRONT_STATE_COUNT /* must be last */ |
| }; |
| |
| const struct ist promex_front_st[PROMEX_FRONT_STATE_COUNT] = { |
| [PROMEX_FRONT_STATE_DOWN] = IST("DOWN"), |
| [PROMEX_FRONT_STATE_UP] = IST("UP"), |
| }; |
| |
| enum promex_back_state { |
| PROMEX_BACK_STATE_DOWN = 0, |
| PROMEX_BACK_STATE_UP, |
| |
| PROMEX_BACK_STATE_COUNT /* must be last */ |
| }; |
| |
| const struct ist promex_back_st[PROMEX_BACK_STATE_COUNT] = { |
| [PROMEX_BACK_STATE_DOWN] = IST("DOWN"), |
| [PROMEX_BACK_STATE_UP] = IST("UP"), |
| }; |
| |
| enum promex_srv_state { |
| PROMEX_SRV_STATE_DOWN = 0, |
| PROMEX_SRV_STATE_UP, |
| PROMEX_SRV_STATE_MAINT, |
| PROMEX_SRV_STATE_DRAIN, |
| PROMEX_SRV_STATE_NOLB, |
| |
| PROMEX_SRV_STATE_COUNT /* must be last */ |
| }; |
| |
| const struct ist promex_srv_st[PROMEX_SRV_STATE_COUNT] = { |
| [PROMEX_SRV_STATE_DOWN] = IST("DOWN"), |
| [PROMEX_SRV_STATE_UP] = IST("UP"), |
| [PROMEX_SRV_STATE_MAINT] = IST("MAINT"), |
| [PROMEX_SRV_STATE_DRAIN] = IST("DRAIN"), |
| [PROMEX_SRV_STATE_NOLB] = IST("NOLB"), |
| }; |
| |
| /* Return the server status. */ |
| enum promex_srv_state promex_srv_status(struct server *sv) |
| { |
| int state = PROMEX_SRV_STATE_DOWN; |
| |
| if (sv->cur_state == SRV_ST_RUNNING || sv->cur_state == SRV_ST_STARTING) { |
| state = PROMEX_SRV_STATE_UP; |
| if (sv->cur_admin & SRV_ADMF_DRAIN) |
| state = PROMEX_SRV_STATE_DRAIN; |
| } |
| else if (sv->cur_state == SRV_ST_STOPPING) |
| state = PROMEX_SRV_STATE_NOLB; |
| |
| if (sv->cur_admin & SRV_ADMF_MAINT) |
| state = PROMEX_SRV_STATE_MAINT; |
| |
| return state; |
| } |
| |
| /* Convert a field to its string representation and write it in <out>, followed |
| * by a newline, if there is enough space. non-numeric value are converted in |
| * "NaN" because Prometheus only support numerical values (but it is unexepceted |
| * to process this kind of value). It returns 1 on success. Otherwise, it |
| * returns 0. The buffer's length must not exceed <max> value. |
| */ |
| static int promex_metric_to_str(struct buffer *out, struct field *f, size_t max) |
| { |
| int ret = 0; |
| |
| switch (field_format(f, 0)) { |
| case FF_EMPTY: ret = chunk_strcat(out, "NaN\n"); break; |
| case FF_S32: ret = chunk_appendf(out, "%d\n", f->u.s32); break; |
| case FF_U32: ret = chunk_appendf(out, "%u\n", f->u.u32); break; |
| case FF_S64: ret = chunk_appendf(out, "%lld\n", (long long)f->u.s64); break; |
| case FF_U64: ret = chunk_appendf(out, "%llu\n", (unsigned long long)f->u.u64); break; |
| case FF_FLT: ret = chunk_appendf(out, "%f\n", f->u.flt); break; |
| case FF_STR: ret = chunk_strcat(out, "NaN\n"); break; |
| default: ret = chunk_strcat(out, "NaN\n"); break; |
| } |
| if (!ret || out->data > max) |
| return 0; |
| return 1; |
| } |
| |
| /* Dump the header lines for <metric>. It is its #HELP and #TYPE strings. It |
| * returns 1 on success. Otherwise, if <out> length exceeds <max>, it returns 0. |
| */ |
| static int promex_dump_metric_header(struct appctx *appctx, struct htx *htx, |
| const struct promex_metric *metric, const struct ist name, |
| struct ist *out, size_t max) |
| { |
| struct promex_ctx *ctx = appctx->svcctx; |
| struct ist type; |
| struct ist desc; |
| |
| switch (metric->type) { |
| case PROMEX_MT_COUNTER: |
| type = ist("counter"); |
| break; |
| default: |
| type = ist("gauge"); |
| } |
| |
| if (istcat(out, ist("# HELP "), max) == -1 || |
| istcat(out, name, max) == -1 || |
| istcat(out, ist(" "), max) == -1) |
| goto full; |
| |
| if (metric->flags & PROMEX_FL_INFO_METRIC) |
| desc = ist(info_fields[ctx->field_num].desc); |
| else if (metric->flags & PROMEX_FL_STICKTABLE_METRIC) |
| desc = promex_sticktable_metric_desc[ctx->field_num]; |
| else if (!isttest(promex_st_metric_desc[ctx->field_num])) |
| desc = ist(stat_fields[ctx->field_num].desc); |
| else |
| desc = promex_st_metric_desc[ctx->field_num]; |
| |
| if (istcat(out, desc, max) == -1 || |
| istcat(out, ist("\n# TYPE "), max) == -1 || |
| istcat(out, name, max) == -1 || |
| istcat(out, ist(" "), max) == -1 || |
| istcat(out, type, max) == -1 || |
| istcat(out, ist("\n"), max) == -1) |
| goto full; |
| |
| return 1; |
| |
| full: |
| return 0; |
| } |
| |
| /* Dump the line for <metric>. It starts by the metric name followed by its |
| * labels (proxy name, server name...) between braces and finally its value. If |
| * not already done, the header lines are dumped first. It returns 1 on |
| * success. Otherwise if <out> length exceeds <max>, it returns 0. |
| */ |
| static int promex_dump_metric(struct appctx *appctx, struct htx *htx, struct ist prefix, |
| const struct promex_metric *metric, struct field *val, |
| struct promex_label *labels, struct ist *out, size_t max) |
| { |
| struct ist name = { .ptr = (char[PROMEX_MAX_NAME_LEN]){ 0 }, .len = 0 }; |
| struct promex_ctx *ctx = appctx->svcctx; |
| size_t len = out->len; |
| |
| if (out->len + PROMEX_MAX_METRIC_LENGTH > max) |
| return 0; |
| |
| /* Fill the metric name */ |
| istcat(&name, prefix, PROMEX_MAX_NAME_LEN); |
| istcat(&name, metric->n, PROMEX_MAX_NAME_LEN); |
| |
| |
| if ((ctx->flags & PROMEX_FL_METRIC_HDR) && |
| !promex_dump_metric_header(appctx, htx, metric, name, out, max)) |
| goto full; |
| |
| if (istcat(out, name, max) == -1) |
| goto full; |
| |
| if (isttest(labels[0].name)) { |
| int i; |
| |
| if (istcat(out, ist("{"), max) == -1) |
| goto full; |
| |
| for (i = 0; isttest(labels[i].name); i++) { |
| if (!isttest(labels[i].value)) |
| continue; |
| |
| if ((i && istcat(out, ist(","), max) == -1) || |
| istcat(out, labels[i].name, max) == -1 || |
| istcat(out, ist("=\""), max) == -1 || |
| istcat(out, labels[i].value, max) == -1 || |
| istcat(out, ist("\""), max) == -1) |
| goto full; |
| } |
| |
| if (istcat(out, ist("}"), max) == -1) |
| goto full; |
| |
| } |
| |
| if (istcat(out, ist(" "), max) == -1) |
| goto full; |
| |
| trash.data = out->len; |
| if (!promex_metric_to_str(&trash, val, max)) |
| goto full; |
| out->len = trash.data; |
| |
| ctx->flags &= ~PROMEX_FL_METRIC_HDR; |
| return 1; |
| full: |
| // Restore previous length |
| out->len = len; |
| return 0; |
| |
| } |
| |
| |
| /* Dump global metrics (prefixed by "haproxy_process_"). It returns 1 on success, |
| * 0 if <htx> is full and -1 in case of any error. */ |
| static int promex_dump_global_metrics(struct appctx *appctx, struct htx *htx) |
| { |
| static struct ist prefix = IST("haproxy_process_"); |
| struct promex_ctx *ctx = appctx->svcctx; |
| struct field val; |
| struct channel *chn = sc_ic(appctx_cs(appctx)); |
| struct ist out = ist2(trash.area, 0); |
| size_t max = htx_get_max_blksz(htx, channel_htx_recv_max(chn, htx)); |
| int ret = 1; |
| |
| if (!stats_fill_info(info, INF_TOTAL_FIELDS, 0)) |
| return -1; |
| |
| for (; ctx->field_num < INF_TOTAL_FIELDS; ctx->field_num++) { |
| struct promex_label labels[PROMEX_MAX_LABELS-1] = {}; |
| |
| if (!(promex_global_metrics[ctx->field_num].flags & ctx->flags)) |
| continue; |
| |
| switch (ctx->field_num) { |
| case INF_BUILD_INFO: |
| labels[0].name = ist("version"); |
| labels[0].value = ist(HAPROXY_VERSION); |
| val = mkf_u32(FN_GAUGE, 1); |
| break; |
| |
| default: |
| val = info[ctx->field_num]; |
| } |
| |
| if (!promex_dump_metric(appctx, htx, prefix, &promex_global_metrics[ctx->field_num], |
| &val, labels, &out, max)) |
| goto full; |
| |
| ctx->flags |= PROMEX_FL_METRIC_HDR; |
| } |
| |
| end: |
| if (out.len) { |
| if (!htx_add_data_atonce(htx, out)) |
| return -1; /* Unexpected and unrecoverable error */ |
| channel_add_input(chn, out.len); |
| } |
| return ret; |
| full: |
| ret = 0; |
| goto end; |
| } |
| |
| /* Dump frontends metrics (prefixed by "haproxy_frontend_"). It returns 1 on success, |
| * 0 if <htx> is full and -1 in case of any error. */ |
| static int promex_dump_front_metrics(struct appctx *appctx, struct htx *htx) |
| { |
| static struct ist prefix = IST("haproxy_frontend_"); |
| struct promex_ctx *ctx = appctx->svcctx; |
| struct proxy *px; |
| struct field val; |
| struct channel *chn = sc_ic(appctx_cs(appctx)); |
| struct ist out = ist2(trash.area, 0); |
| size_t max = htx_get_max_blksz(htx, channel_htx_recv_max(chn, htx)); |
| struct field *stats = stat_l[STATS_DOMAIN_PROXY]; |
| int ret = 1; |
| enum promex_front_state state; |
| |
| for (;ctx->field_num < ST_F_TOTAL_FIELDS; ctx->field_num++) { |
| if (!(promex_st_metrics[ctx->field_num].flags & ctx->flags)) |
| continue; |
| |
| while (ctx->px) { |
| struct promex_label labels[PROMEX_MAX_LABELS-1] = {}; |
| |
| px = ctx->px; |
| |
| labels[0].name = ist("proxy"); |
| labels[0].value = ist2(px->id, strlen(px->id)); |
| |
| /* skip the disabled proxies, global frontend and non-networked ones */ |
| if ((px->flags & PR_FL_DISABLED) || px->uuid <= 0 || !(px->cap & PR_CAP_FE)) |
| goto next_px; |
| |
| if (!stats_fill_fe_stats(px, stats, ST_F_TOTAL_FIELDS, &(ctx->field_num))) |
| return -1; |
| |
| switch (ctx->field_num) { |
| case ST_F_STATUS: |
| state = !(px->flags & PR_FL_STOPPED); |
| for (; ctx->obj_state < PROMEX_FRONT_STATE_COUNT; ctx->obj_state++) { |
| labels[1].name = ist("state"); |
| labels[1].value = promex_front_st[ctx->obj_state]; |
| val = mkf_u32(FO_STATUS, state == ctx->obj_state); |
| if (!promex_dump_metric(appctx, htx, prefix, &promex_st_metrics[ctx->field_num], |
| &val, labels, &out, max)) |
| goto full; |
| } |
| ctx->obj_state = 0; |
| goto next_px; |
| case ST_F_REQ_RATE_MAX: |
| case ST_F_REQ_TOT: |
| case ST_F_INTERCEPTED: |
| case ST_F_CACHE_LOOKUPS: |
| case ST_F_CACHE_HITS: |
| case ST_F_COMP_IN: |
| case ST_F_COMP_OUT: |
| case ST_F_COMP_BYP: |
| case ST_F_COMP_RSP: |
| if (px->mode != PR_MODE_HTTP) |
| goto next_px; |
| val = stats[ctx->field_num]; |
| break; |
| case ST_F_HRSP_1XX: |
| case ST_F_HRSP_2XX: |
| case ST_F_HRSP_3XX: |
| case ST_F_HRSP_4XX: |
| case ST_F_HRSP_5XX: |
| case ST_F_HRSP_OTHER: |
| if (px->mode != PR_MODE_HTTP) |
| goto next_px; |
| if (ctx->field_num != ST_F_HRSP_1XX) |
| ctx->flags &= ~PROMEX_FL_METRIC_HDR; |
| labels[1].name = ist("code"); |
| labels[1].value = promex_hrsp_code[ctx->field_num - ST_F_HRSP_1XX]; |
| val = stats[ctx->field_num]; |
| break; |
| |
| default: |
| val = stats[ctx->field_num]; |
| } |
| |
| if (!promex_dump_metric(appctx, htx, prefix, &promex_st_metrics[ctx->field_num], |
| &val, labels, &out, max)) |
| goto full; |
| next_px: |
| ctx->px = px->next; |
| } |
| ctx->flags |= PROMEX_FL_METRIC_HDR; |
| ctx->px = proxies_list; |
| } |
| |
| end: |
| if (out.len) { |
| if (!htx_add_data_atonce(htx, out)) |
| return -1; /* Unexpected and unrecoverable error */ |
| channel_add_input(chn, out.len); |
| } |
| return ret; |
| full: |
| ret = 0; |
| goto end; |
| } |
| |
| /* Dump listener metrics (prefixed by "haproxy_listen_"). It returns 1 on |
| * success, 0 if <htx> is full and -1 in case of any error. */ |
| static int promex_dump_listener_metrics(struct appctx *appctx, struct htx *htx) |
| { |
| static struct ist prefix = IST("haproxy_listener_"); |
| struct promex_ctx *ctx = appctx->svcctx; |
| struct proxy *px; |
| struct field val; |
| struct channel *chn = sc_ic(appctx_cs(appctx)); |
| struct ist out = ist2(trash.area, 0); |
| size_t max = htx_get_max_blksz(htx, channel_htx_recv_max(chn, htx)); |
| struct field *stats = stat_l[STATS_DOMAIN_PROXY]; |
| struct listener *li; |
| int ret = 1; |
| enum li_status status; |
| |
| for (;ctx->field_num < ST_F_TOTAL_FIELDS; ctx->field_num++) { |
| if (!(promex_st_metrics[ctx->field_num].flags & ctx->flags)) |
| continue; |
| |
| while (ctx->px) { |
| struct promex_label labels[PROMEX_MAX_LABELS-1] = {}; |
| |
| px = ctx->px; |
| |
| labels[0].name = ist("proxy"); |
| labels[0].value = ist2(px->id, strlen(px->id)); |
| |
| /* skip the disabled proxies, global frontend and non-networked ones */ |
| if ((px->flags & PR_FL_DISABLED) || px->uuid <= 0 || !(px->cap & PR_CAP_FE)) |
| goto next_px; |
| |
| li = ctx->li; |
| list_for_each_entry_from(li, &px->conf.listeners, by_fe) { |
| |
| if (!li->counters) |
| continue; |
| |
| labels[1].name = ist("listener"); |
| labels[1].value = ist2(li->name, strlen(li->name)); |
| |
| if (!stats_fill_li_stats(px, li, 0, stats, |
| ST_F_TOTAL_FIELDS, &(ctx->field_num))) |
| return -1; |
| |
| switch (ctx->field_num) { |
| case ST_F_STATUS: |
| status = get_li_status(li); |
| for (; ctx->obj_state < LI_STATE_COUNT; ctx->obj_state++) { |
| val = mkf_u32(FO_STATUS, status == ctx->obj_state); |
| labels[2].name = ist("state"); |
| labels[2].value = ist(li_status_st[ctx->obj_state]); |
| if (!promex_dump_metric(appctx, htx, prefix, &promex_st_metrics[ctx->field_num], |
| &val, labels, &out, max)) |
| goto full; |
| } |
| ctx->obj_state = 0; |
| continue; |
| default: |
| val = stats[ctx->field_num]; |
| } |
| |
| if (!promex_dump_metric(appctx, htx, prefix, |
| &promex_st_metrics[ctx->field_num], |
| &val, labels, &out, max)) |
| goto full; |
| } |
| |
| next_px: |
| px = px->next; |
| ctx->px = px; |
| ctx->li = (px ? LIST_NEXT(&px->conf.listeners, struct listener *, by_fe) : NULL); |
| } |
| ctx->flags |= PROMEX_FL_METRIC_HDR; |
| ctx->px = proxies_list; |
| ctx->li = LIST_NEXT(&proxies_list->conf.listeners, struct listener *, by_fe); |
| } |
| |
| end: |
| if (out.len) { |
| if (!htx_add_data_atonce(htx, out)) |
| return -1; /* Unexpected and unrecoverable error */ |
| channel_add_input(chn, out.len); |
| } |
| return ret; |
| full: |
| ctx->li = li; |
| ret = 0; |
| goto end; |
| } |
| |
| /* Dump backends metrics (prefixed by "haproxy_backend_"). It returns 1 on success, |
| * 0 if <htx> is full and -1 in case of any error. */ |
| static int promex_dump_back_metrics(struct appctx *appctx, struct htx *htx) |
| { |
| static struct ist prefix = IST("haproxy_backend_"); |
| struct promex_ctx *ctx = appctx->svcctx; |
| struct proxy *px; |
| struct server *sv; |
| struct field val; |
| struct channel *chn = sc_ic(appctx_cs(appctx)); |
| struct ist out = ist2(trash.area, 0); |
| size_t max = htx_get_max_blksz(htx, channel_htx_recv_max(chn, htx)); |
| struct field *stats = stat_l[STATS_DOMAIN_PROXY]; |
| int ret = 1; |
| double secs; |
| enum promex_back_state bkd_state; |
| enum promex_srv_state srv_state; |
| |
| for (;ctx->field_num < ST_F_TOTAL_FIELDS; ctx->field_num++) { |
| if (!(promex_st_metrics[ctx->field_num].flags & ctx->flags)) |
| continue; |
| |
| while (ctx->px) { |
| struct promex_label labels[PROMEX_MAX_LABELS-1] = {}; |
| unsigned int srv_state_count[PROMEX_SRV_STATE_COUNT] = { 0 }; |
| |
| px = ctx->px; |
| |
| labels[0].name = ist("proxy"); |
| labels[0].value = ist2(px->id, strlen(px->id)); |
| |
| /* skip the disabled proxies, global frontend and non-networked ones */ |
| if ((px->flags & PR_FL_DISABLED) || px->uuid <= 0 || !(px->cap & PR_CAP_BE)) |
| goto next_px; |
| |
| if (!stats_fill_be_stats(px, 0, stats, ST_F_TOTAL_FIELDS, &(ctx->field_num))) |
| return -1; |
| |
| switch (ctx->field_num) { |
| case ST_F_AGG_SRV_CHECK_STATUS: |
| if (!px->srv) |
| goto next_px; |
| sv = px->srv; |
| while (sv) { |
| srv_state = promex_srv_status(sv); |
| srv_state_count[srv_state] += 1; |
| sv = sv->next; |
| } |
| for (; ctx->obj_state < PROMEX_SRV_STATE_COUNT; ctx->obj_state++) { |
| val = mkf_u32(FN_GAUGE, srv_state_count[ctx->obj_state]); |
| labels[1].name = ist("state"); |
| labels[1].value = promex_srv_st[ctx->obj_state]; |
| if (!promex_dump_metric(appctx, htx, prefix, &promex_st_metrics[ctx->field_num], |
| &val, labels, &out, max)) |
| goto full; |
| } |
| ctx->obj_state = 0; |
| goto next_px; |
| case ST_F_STATUS: |
| bkd_state = ((px->lbprm.tot_weight > 0 || !px->srv) ? 1 : 0); |
| for (; ctx->obj_state < PROMEX_BACK_STATE_COUNT; ctx->obj_state++) { |
| labels[1].name = ist("state"); |
| labels[1].value = promex_back_st[ctx->obj_state]; |
| val = mkf_u32(FO_STATUS, bkd_state == ctx->obj_state); |
| if (!promex_dump_metric(appctx, htx, prefix, &promex_st_metrics[ctx->field_num], |
| &val, labels, &out, max)) |
| goto full; |
| } |
| ctx->obj_state = 0; |
| goto next_px; |
| case ST_F_QTIME: |
| secs = (double)swrate_avg(px->be_counters.q_time, TIME_STATS_SAMPLES) / 1000.0; |
| val = mkf_flt(FN_AVG, secs); |
| break; |
| case ST_F_CTIME: |
| secs = (double)swrate_avg(px->be_counters.c_time, TIME_STATS_SAMPLES) / 1000.0; |
| val = mkf_flt(FN_AVG, secs); |
| break; |
| case ST_F_RTIME: |
| secs = (double)swrate_avg(px->be_counters.d_time, TIME_STATS_SAMPLES) / 1000.0; |
| val = mkf_flt(FN_AVG, secs); |
| break; |
| case ST_F_TTIME: |
| secs = (double)swrate_avg(px->be_counters.t_time, TIME_STATS_SAMPLES) / 1000.0; |
| val = mkf_flt(FN_AVG, secs); |
| break; |
| case ST_F_QT_MAX: |
| secs = (double)px->be_counters.qtime_max / 1000.0; |
| val = mkf_flt(FN_MAX, secs); |
| break; |
| case ST_F_CT_MAX: |
| secs = (double)px->be_counters.ctime_max / 1000.0; |
| val = mkf_flt(FN_MAX, secs); |
| break; |
| case ST_F_RT_MAX: |
| secs = (double)px->be_counters.dtime_max / 1000.0; |
| val = mkf_flt(FN_MAX, secs); |
| break; |
| case ST_F_TT_MAX: |
| secs = (double)px->be_counters.ttime_max / 1000.0; |
| val = mkf_flt(FN_MAX, secs); |
| break; |
| case ST_F_REQ_TOT: |
| case ST_F_CACHE_LOOKUPS: |
| case ST_F_CACHE_HITS: |
| case ST_F_COMP_IN: |
| case ST_F_COMP_OUT: |
| case ST_F_COMP_BYP: |
| case ST_F_COMP_RSP: |
| if (px->mode != PR_MODE_HTTP) |
| goto next_px; |
| val = stats[ctx->field_num]; |
| break; |
| case ST_F_HRSP_1XX: |
| case ST_F_HRSP_2XX: |
| case ST_F_HRSP_3XX: |
| case ST_F_HRSP_4XX: |
| case ST_F_HRSP_5XX: |
| case ST_F_HRSP_OTHER: |
| if (px->mode != PR_MODE_HTTP) |
| goto next_px; |
| if (ctx->field_num != ST_F_HRSP_1XX) |
| ctx->flags &= ~PROMEX_FL_METRIC_HDR; |
| labels[1].name = ist("code"); |
| labels[1].value = promex_hrsp_code[ctx->field_num - ST_F_HRSP_1XX]; |
| val = stats[ctx->field_num]; |
| break; |
| |
| default: |
| val = stats[ctx->field_num]; |
| } |
| |
| if (!promex_dump_metric(appctx, htx, prefix, &promex_st_metrics[ctx->field_num], |
| &val, labels, &out, max)) |
| goto full; |
| next_px: |
| ctx->px = px->next; |
| } |
| ctx->flags |= PROMEX_FL_METRIC_HDR; |
| ctx->px = proxies_list; |
| } |
| |
| end: |
| if (out.len) { |
| if (!htx_add_data_atonce(htx, out)) |
| return -1; /* Unexpected and unrecoverable error */ |
| channel_add_input(chn, out.len); |
| } |
| return ret; |
| full: |
| ret = 0; |
| goto end; |
| } |
| |
| /* Dump servers metrics (prefixed by "haproxy_server_"). It returns 1 on success, |
| * 0 if <htx> is full and -1 in case of any error. */ |
| static int promex_dump_srv_metrics(struct appctx *appctx, struct htx *htx) |
| { |
| static struct ist prefix = IST("haproxy_server_"); |
| struct promex_ctx *ctx = appctx->svcctx; |
| struct proxy *px; |
| struct server *sv; |
| struct field val; |
| struct channel *chn = sc_ic(appctx_cs(appctx)); |
| struct ist out = ist2(trash.area, 0); |
| size_t max = htx_get_max_blksz(htx, channel_htx_recv_max(chn, htx)); |
| struct field *stats = stat_l[STATS_DOMAIN_PROXY]; |
| int ret = 1; |
| double secs; |
| enum promex_srv_state state; |
| const char *check_state; |
| |
| for (;ctx->field_num < ST_F_TOTAL_FIELDS; ctx->field_num++) { |
| if (!(promex_st_metrics[ctx->field_num].flags & ctx->flags)) |
| continue; |
| |
| while (ctx->px) { |
| struct promex_label labels[PROMEX_MAX_LABELS-1] = {}; |
| |
| px = ctx->px; |
| |
| labels[0].name = ist("proxy"); |
| labels[0].value = ist2(px->id, strlen(px->id)); |
| |
| /* skip the disabled proxies, global frontend and non-networked ones */ |
| if ((px->flags & PR_FL_DISABLED) || px->uuid <= 0 || !(px->cap & PR_CAP_BE)) |
| goto next_px; |
| |
| while (ctx->sv) { |
| sv = ctx->sv; |
| |
| labels[1].name = ist("server"); |
| labels[1].value = ist2(sv->id, strlen(sv->id)); |
| |
| if (!stats_fill_sv_stats(px, sv, 0, stats, ST_F_TOTAL_FIELDS, &(ctx->field_num))) |
| return -1; |
| |
| if ((ctx->flags & PROMEX_FL_NO_MAINT_SRV) && (sv->cur_admin & SRV_ADMF_MAINT)) |
| goto next_sv; |
| |
| switch (ctx->field_num) { |
| case ST_F_STATUS: |
| state = promex_srv_status(sv); |
| for (; ctx->obj_state < PROMEX_SRV_STATE_COUNT; ctx->obj_state++) { |
| val = mkf_u32(FO_STATUS, state == ctx->obj_state); |
| labels[2].name = ist("state"); |
| labels[2].value = promex_srv_st[ctx->obj_state]; |
| if (!promex_dump_metric(appctx, htx, prefix, &promex_st_metrics[ctx->field_num], |
| &val, labels, &out, max)) |
| goto full; |
| } |
| ctx->obj_state = 0; |
| goto next_sv; |
| case ST_F_QTIME: |
| secs = (double)swrate_avg(sv->counters.q_time, TIME_STATS_SAMPLES) / 1000.0; |
| val = mkf_flt(FN_AVG, secs); |
| break; |
| case ST_F_CTIME: |
| secs = (double)swrate_avg(sv->counters.c_time, TIME_STATS_SAMPLES) / 1000.0; |
| val = mkf_flt(FN_AVG, secs); |
| break; |
| case ST_F_RTIME: |
| secs = (double)swrate_avg(sv->counters.d_time, TIME_STATS_SAMPLES) / 1000.0; |
| val = mkf_flt(FN_AVG, secs); |
| break; |
| case ST_F_TTIME: |
| secs = (double)swrate_avg(sv->counters.t_time, TIME_STATS_SAMPLES) / 1000.0; |
| val = mkf_flt(FN_AVG, secs); |
| break; |
| case ST_F_QT_MAX: |
| secs = (double)sv->counters.qtime_max / 1000.0; |
| val = mkf_flt(FN_MAX, secs); |
| break; |
| case ST_F_CT_MAX: |
| secs = (double)sv->counters.ctime_max / 1000.0; |
| val = mkf_flt(FN_MAX, secs); |
| break; |
| case ST_F_RT_MAX: |
| secs = (double)sv->counters.dtime_max / 1000.0; |
| val = mkf_flt(FN_MAX, secs); |
| break; |
| case ST_F_TT_MAX: |
| secs = (double)sv->counters.ttime_max / 1000.0; |
| val = mkf_flt(FN_MAX, secs); |
| break; |
| case ST_F_CHECK_STATUS: |
| if ((sv->check.state & (CHK_ST_ENABLED|CHK_ST_PAUSED)) != CHK_ST_ENABLED) |
| goto next_sv; |
| |
| for (; ctx->obj_state < HCHK_STATUS_SIZE; ctx->obj_state++) { |
| if (get_check_status_result(ctx->obj_state) < CHK_RES_FAILED) |
| continue; |
| val = mkf_u32(FO_STATUS, sv->check.status == ctx->obj_state); |
| check_state = get_check_status_info(ctx->obj_state); |
| labels[2].name = ist("state"); |
| labels[2].value = ist(check_state); |
| if (!promex_dump_metric(appctx, htx, prefix, &promex_st_metrics[ctx->field_num], |
| &val, labels, &out, max)) |
| goto full; |
| } |
| ctx->obj_state = 0; |
| goto next_sv; |
| case ST_F_CHECK_CODE: |
| if ((sv->check.state & (CHK_ST_ENABLED|CHK_ST_PAUSED)) != CHK_ST_ENABLED) |
| goto next_sv; |
| val = mkf_u32(FN_OUTPUT, (sv->check.status < HCHK_STATUS_L57DATA) ? 0 : sv->check.code); |
| break; |
| case ST_F_CHECK_DURATION: |
| if (sv->check.status < HCHK_STATUS_CHECKED) |
| goto next_sv; |
| secs = (double)sv->check.duration / 1000.0; |
| val = mkf_flt(FN_DURATION, secs); |
| break; |
| case ST_F_REQ_TOT: |
| if (px->mode != PR_MODE_HTTP) |
| goto next_px; |
| val = stats[ctx->field_num]; |
| break; |
| case ST_F_HRSP_1XX: |
| case ST_F_HRSP_2XX: |
| case ST_F_HRSP_3XX: |
| case ST_F_HRSP_4XX: |
| case ST_F_HRSP_5XX: |
| case ST_F_HRSP_OTHER: |
| if (px->mode != PR_MODE_HTTP) |
| goto next_px; |
| if (ctx->field_num != ST_F_HRSP_1XX) |
| ctx->flags &= ~PROMEX_FL_METRIC_HDR; |
| labels[2].name = ist("code"); |
| labels[2].value = promex_hrsp_code[ctx->field_num - ST_F_HRSP_1XX]; |
| val = stats[ctx->field_num]; |
| break; |
| |
| default: |
| val = stats[ctx->field_num]; |
| } |
| |
| if (!promex_dump_metric(appctx, htx, prefix, &promex_st_metrics[ctx->field_num], |
| &val, labels, &out, max)) |
| goto full; |
| next_sv: |
| ctx->sv = sv->next; |
| } |
| |
| next_px: |
| ctx->px = px->next; |
| ctx->sv = (ctx->px ? ctx->px->srv : NULL); |
| } |
| ctx->flags |= PROMEX_FL_METRIC_HDR; |
| ctx->px = proxies_list; |
| ctx->sv = (ctx->px ? ctx->px->srv : NULL); |
| } |
| |
| |
| end: |
| if (out.len) { |
| if (!htx_add_data_atonce(htx, out)) |
| return -1; /* Unexpected and unrecoverable error */ |
| channel_add_input(chn, out.len); |
| } |
| return ret; |
| full: |
| ret = 0; |
| goto end; |
| } |
| |
| /* Dump stick table metrics (prefixed by "haproxy_sticktable_"). It returns 1 on success, |
| * 0 if <htx> is full and -1 in case of any error. */ |
| static int promex_dump_sticktable_metrics(struct appctx *appctx, struct htx *htx) |
| { |
| static struct ist prefix = IST("haproxy_sticktable_"); |
| struct promex_ctx *ctx = appctx->svcctx; |
| struct field val; |
| struct channel *chn = sc_ic(appctx_cs(appctx)); |
| struct ist out = ist2(trash.area, 0); |
| size_t max = htx_get_max_blksz(htx, channel_htx_recv_max(chn, htx)); |
| int ret = 1; |
| struct stktable *t; |
| |
| for (; ctx->field_num < STICKTABLE_TOTAL_FIELDS; ctx->field_num++) { |
| if (!(promex_sticktable_metrics[ctx->field_num].flags & ctx->flags)) |
| continue; |
| |
| while (ctx->st) { |
| struct promex_label labels[PROMEX_MAX_LABELS - 1] = {}; |
| |
| t = ctx->st; |
| if (!t->size) |
| goto next_px; |
| |
| labels[0].name = ist("name"); |
| labels[0].value = ist2(t->id, strlen(t->id)); |
| labels[1].name = ist("type"); |
| labels[1].value = ist2(stktable_types[t->type].kw, strlen(stktable_types[t->type].kw)); |
| switch (ctx->field_num) { |
| case STICKTABLE_SIZE: |
| val = mkf_u32(FN_GAUGE, t->size); |
| break; |
| case STICKTABLE_USED: |
| val = mkf_u32(FN_GAUGE, t->current); |
| break; |
| default: |
| goto next_px; |
| } |
| |
| if (!promex_dump_metric(appctx, htx, prefix, |
| &promex_sticktable_metrics[ctx->field_num], |
| &val, labels, &out, max)) |
| goto full; |
| |
| next_px: |
| ctx->st = t->next; |
| } |
| ctx->flags |= PROMEX_FL_METRIC_HDR; |
| ctx->st = stktables_list; |
| } |
| |
| end: |
| if (out.len) { |
| if (!htx_add_data_atonce(htx, out)) |
| return -1; /* Unexpected and unrecoverable error */ |
| channel_add_input(chn, out.len); |
| } |
| return ret; |
| full: |
| ret = 0; |
| goto end; |
| } |
| |
| /* Dump all metrics (global, frontends, backends and servers) depending on the |
| * dumper state (appctx->st1). It returns 1 on success, 0 if <htx> is full and |
| * -1 in case of any error. |
| * Uses <appctx.ctx.stats.px> as a pointer to the current proxy and <sv>/<li> |
| * as pointers to the current server/listener respectively. |
| */ |
| static int promex_dump_metrics(struct appctx *appctx, struct stconn *cs, struct htx *htx) |
| { |
| struct promex_ctx *ctx = appctx->svcctx; |
| int ret; |
| |
| switch (appctx->st1) { |
| case PROMEX_DUMPER_INIT: |
| ctx->px = NULL; |
| ctx->st = NULL; |
| ctx->li = NULL; |
| ctx->sv = NULL; |
| ctx->flags |= (PROMEX_FL_METRIC_HDR|PROMEX_FL_INFO_METRIC); |
| ctx->obj_state = 0; |
| ctx->field_num = INF_NAME; |
| appctx->st1 = PROMEX_DUMPER_GLOBAL; |
| /* fall through */ |
| |
| case PROMEX_DUMPER_GLOBAL: |
| if (ctx->flags & PROMEX_FL_SCOPE_GLOBAL) { |
| ret = promex_dump_global_metrics(appctx, htx); |
| if (ret <= 0) { |
| if (ret == -1) |
| goto error; |
| goto full; |
| } |
| } |
| |
| ctx->px = proxies_list; |
| ctx->st = NULL; |
| ctx->li = NULL; |
| ctx->sv = NULL; |
| ctx->flags &= ~PROMEX_FL_INFO_METRIC; |
| ctx->flags |= (PROMEX_FL_METRIC_HDR|PROMEX_FL_FRONT_METRIC); |
| ctx->obj_state = 0; |
| ctx->field_num = ST_F_PXNAME; |
| appctx->st1 = PROMEX_DUMPER_FRONT; |
| /* fall through */ |
| |
| case PROMEX_DUMPER_FRONT: |
| if (ctx->flags & PROMEX_FL_SCOPE_FRONT) { |
| ret = promex_dump_front_metrics(appctx, htx); |
| if (ret <= 0) { |
| if (ret == -1) |
| goto error; |
| goto full; |
| } |
| } |
| |
| ctx->px = proxies_list; |
| ctx->st = NULL; |
| ctx->li = LIST_NEXT(&proxies_list->conf.listeners, struct listener *, by_fe); |
| ctx->sv = NULL; |
| ctx->flags &= ~PROMEX_FL_FRONT_METRIC; |
| ctx->flags |= (PROMEX_FL_METRIC_HDR|PROMEX_FL_LI_METRIC); |
| ctx->obj_state = 0; |
| ctx->field_num = ST_F_PXNAME; |
| appctx->st1 = PROMEX_DUMPER_LI; |
| /* fall through */ |
| |
| case PROMEX_DUMPER_LI: |
| if (ctx->flags & PROMEX_FL_SCOPE_LI) { |
| ret = promex_dump_listener_metrics(appctx, htx); |
| if (ret <= 0) { |
| if (ret == -1) |
| goto error; |
| goto full; |
| } |
| } |
| |
| ctx->px = proxies_list; |
| ctx->st = NULL; |
| ctx->li = NULL; |
| ctx->sv = NULL; |
| ctx->flags &= ~PROMEX_FL_LI_METRIC; |
| ctx->flags |= (PROMEX_FL_METRIC_HDR|PROMEX_FL_BACK_METRIC); |
| ctx->obj_state = 0; |
| ctx->field_num = ST_F_PXNAME; |
| appctx->st1 = PROMEX_DUMPER_BACK; |
| /* fall through */ |
| |
| case PROMEX_DUMPER_BACK: |
| if (ctx->flags & PROMEX_FL_SCOPE_BACK) { |
| ret = promex_dump_back_metrics(appctx, htx); |
| if (ret <= 0) { |
| if (ret == -1) |
| goto error; |
| goto full; |
| } |
| } |
| |
| ctx->px = proxies_list; |
| ctx->st = NULL; |
| ctx->li = NULL; |
| ctx->sv = ctx->px ? ctx->px->srv : NULL; |
| ctx->flags &= ~PROMEX_FL_BACK_METRIC; |
| ctx->flags |= (PROMEX_FL_METRIC_HDR|PROMEX_FL_SRV_METRIC); |
| ctx->obj_state = 0; |
| ctx->field_num = ST_F_PXNAME; |
| appctx->st1 = PROMEX_DUMPER_SRV; |
| /* fall through */ |
| |
| case PROMEX_DUMPER_SRV: |
| if (ctx->flags & PROMEX_FL_SCOPE_SERVER) { |
| ret = promex_dump_srv_metrics(appctx, htx); |
| if (ret <= 0) { |
| if (ret == -1) |
| goto error; |
| goto full; |
| } |
| } |
| |
| ctx->px = NULL; |
| ctx->st = stktables_list; |
| ctx->li = NULL; |
| ctx->sv = NULL; |
| ctx->flags &= ~(PROMEX_FL_METRIC_HDR|PROMEX_FL_SRV_METRIC); |
| ctx->flags |= (PROMEX_FL_METRIC_HDR|PROMEX_FL_STICKTABLE_METRIC); |
| ctx->field_num = STICKTABLE_SIZE; |
| appctx->st1 = PROMEX_DUMPER_STICKTABLE; |
| /* fall through */ |
| |
| case PROMEX_DUMPER_STICKTABLE: |
| if (ctx->flags & PROMEX_FL_SCOPE_STICKTABLE) { |
| ret = promex_dump_sticktable_metrics(appctx, htx); |
| if (ret <= 0) { |
| if (ret == -1) |
| goto error; |
| goto full; |
| } |
| } |
| |
| ctx->px = NULL; |
| ctx->st = NULL; |
| ctx->li = NULL; |
| ctx->sv = NULL; |
| ctx->flags &= ~(PROMEX_FL_METRIC_HDR|PROMEX_FL_STICKTABLE_METRIC); |
| ctx->field_num = 0; |
| appctx->st1 = PROMEX_DUMPER_DONE; |
| /* fall through */ |
| |
| case PROMEX_DUMPER_DONE: |
| default: |
| break; |
| } |
| |
| return 1; |
| |
| full: |
| sc_need_room(cs); |
| return 0; |
| error: |
| /* unrecoverable error */ |
| ctx->px = NULL; |
| ctx->st = NULL; |
| ctx->li = NULL; |
| ctx->sv = NULL; |
| ctx->flags = 0; |
| ctx->field_num = 0; |
| appctx->st1 = PROMEX_DUMPER_DONE; |
| return -1; |
| } |
| |
| /* Parse the query string of request URI to filter the metrics. It returns 1 on |
| * success and -1 on error. */ |
| static int promex_parse_uri(struct appctx *appctx, struct stconn *cs) |
| { |
| struct promex_ctx *ctx = appctx->svcctx; |
| struct channel *req = sc_oc(cs); |
| struct channel *res = sc_ic(cs); |
| struct htx *req_htx, *res_htx; |
| struct htx_sl *sl; |
| char *p, *key, *value; |
| const char *end; |
| struct buffer *err; |
| int default_scopes = PROMEX_FL_SCOPE_ALL; |
| int len; |
| |
| /* Get the query-string */ |
| req_htx = htxbuf(&req->buf); |
| sl = http_get_stline(req_htx); |
| if (!sl) |
| goto error; |
| p = http_find_param_list(HTX_SL_REQ_UPTR(sl), HTX_SL_REQ_ULEN(sl), '?'); |
| if (!p) |
| goto end; |
| end = HTX_SL_REQ_UPTR(sl) + HTX_SL_REQ_ULEN(sl); |
| |
| /* copy the query-string */ |
| len = end - p; |
| chunk_reset(&trash); |
| memcpy(trash.area, p, len); |
| trash.area[len] = 0; |
| p = trash.area; |
| end = trash.area + len; |
| |
| /* Parse the query-string */ |
| while (p < end && *p && *p != '#') { |
| value = NULL; |
| |
| /* decode parameter name */ |
| key = p; |
| while (p < end && *p != '=' && *p != '&' && *p != '#') |
| ++p; |
| /* found a value */ |
| if (*p == '=') { |
| *(p++) = 0; |
| value = p; |
| } |
| else if (*p == '&') |
| *(p++) = 0; |
| else if (*p == '#') |
| *p = 0; |
| len = url_decode(key, 1); |
| if (len == -1) |
| goto error; |
| |
| /* decode value */ |
| if (value) { |
| while (p < end && *p != '=' && *p != '&' && *p != '#') |
| ++p; |
| if (*p == '=') |
| goto error; |
| if (*p == '&') |
| *(p++) = 0; |
| else if (*p == '#') |
| *p = 0; |
| len = url_decode(value, 1); |
| if (len == -1) |
| goto error; |
| } |
| |
| if (strcmp(key, "scope") == 0) { |
| default_scopes = 0; /* at least a scope defined, unset default scopes */ |
| if (!value) |
| goto error; |
| else if (*value == 0) |
| ctx->flags &= ~PROMEX_FL_SCOPE_ALL; |
| else if (*value == '*') |
| ctx->flags |= PROMEX_FL_SCOPE_ALL; |
| else if (strcmp(value, "global") == 0) |
| ctx->flags |= PROMEX_FL_SCOPE_GLOBAL; |
| else if (strcmp(value, "server") == 0) |
| ctx->flags |= PROMEX_FL_SCOPE_SERVER; |
| else if (strcmp(value, "backend") == 0) |
| ctx->flags |= PROMEX_FL_SCOPE_BACK; |
| else if (strcmp(value, "frontend") == 0) |
| ctx->flags |= PROMEX_FL_SCOPE_FRONT; |
| else if (strcmp(value, "listener") == 0) |
| ctx->flags |= PROMEX_FL_SCOPE_LI; |
| else if (strcmp(value, "sticktable") == 0) |
| ctx->flags |= PROMEX_FL_SCOPE_STICKTABLE; |
| else |
| goto error; |
| } |
| else if (strcmp(key, "no-maint") == 0) |
| ctx->flags |= PROMEX_FL_NO_MAINT_SRV; |
| } |
| |
| end: |
| ctx->flags |= default_scopes; |
| return 1; |
| |
| error: |
| err = &http_err_chunks[HTTP_ERR_400]; |
| channel_erase(res); |
| res->buf.data = b_data(err); |
| memcpy(res->buf.area, b_head(err), b_data(err)); |
| res_htx = htx_from_buf(&res->buf); |
| channel_add_input(res, res_htx->data); |
| appctx->st0 = PROMEX_ST_END; |
| return -1; |
| } |
| |
| /* Send HTTP headers of the response. It returns 1 on success and 0 if <htx> is |
| * full. */ |
| static int promex_send_headers(struct appctx *appctx, struct stconn *cs, struct htx *htx) |
| { |
| struct channel *chn = sc_ic(cs); |
| struct htx_sl *sl; |
| unsigned int flags; |
| |
| flags = (HTX_SL_F_IS_RESP|HTX_SL_F_VER_11|HTX_SL_F_XFER_ENC|HTX_SL_F_XFER_LEN|HTX_SL_F_CHNK); |
| sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, ist("HTTP/1.1"), ist("200"), ist("OK")); |
| if (!sl) |
| goto full; |
| sl->info.res.status = 200; |
| if (!htx_add_header(htx, ist("Cache-Control"), ist("no-cache")) || |
| !htx_add_header(htx, ist("Content-Type"), ist("text/plain; version=0.0.4")) || |
| !htx_add_header(htx, ist("Transfer-Encoding"), ist("chunked")) || |
| !htx_add_endof(htx, HTX_BLK_EOH)) |
| goto full; |
| |
| channel_add_input(chn, htx->data); |
| return 1; |
| full: |
| htx_reset(htx); |
| sc_need_room(cs); |
| return 0; |
| } |
| |
| /* The function returns 1 if the initialisation is complete, 0 if |
| * an errors occurs and -1 if more data are required for initializing |
| * the applet. |
| */ |
| static int promex_appctx_init(struct appctx *appctx) |
| { |
| applet_reserve_svcctx(appctx, sizeof(struct promex_ctx)); |
| appctx->st0 = PROMEX_ST_INIT; |
| return 0; |
| } |
| |
| /* The main I/O handler for the promex applet. */ |
| static void promex_appctx_handle_io(struct appctx *appctx) |
| { |
| struct stconn *cs = appctx_cs(appctx); |
| struct stream *s = __sc_strm(cs); |
| struct channel *req = sc_oc(cs); |
| struct channel *res = sc_ic(cs); |
| struct htx *req_htx, *res_htx; |
| int ret; |
| |
| res_htx = htx_from_buf(&res->buf); |
| if (unlikely(cs->state == SC_ST_DIS || cs->state == SC_ST_CLO)) |
| goto out; |
| |
| /* Check if the input buffer is available. */ |
| if (!b_size(&res->buf)) { |
| sc_need_room(cs); |
| goto out; |
| } |
| |
| switch (appctx->st0) { |
| case PROMEX_ST_INIT: |
| ret = promex_parse_uri(appctx, cs); |
| if (ret <= 0) { |
| if (ret == -1) |
| goto error; |
| goto out; |
| } |
| appctx->st0 = PROMEX_ST_HEAD; |
| appctx->st1 = PROMEX_DUMPER_INIT; |
| /* fall through */ |
| |
| case PROMEX_ST_HEAD: |
| if (!promex_send_headers(appctx, cs, res_htx)) |
| goto out; |
| appctx->st0 = ((s->txn->meth == HTTP_METH_HEAD) ? PROMEX_ST_DONE : PROMEX_ST_DUMP); |
| /* fall through */ |
| |
| case PROMEX_ST_DUMP: |
| ret = promex_dump_metrics(appctx, cs, res_htx); |
| if (ret <= 0) { |
| if (ret == -1) |
| goto error; |
| goto out; |
| } |
| appctx->st0 = PROMEX_ST_DONE; |
| /* fall through */ |
| |
| case PROMEX_ST_DONE: |
| /* no more data are expected. If the response buffer is |
| * empty, be sure to add something (EOT block in this |
| * case) to have something to send. It is important to |
| * be sure the EOM flags will be handled by the |
| * endpoint. |
| */ |
| if (htx_is_empty(res_htx)) { |
| if (!htx_add_endof(res_htx, HTX_BLK_EOT)) { |
| sc_need_room(cs); |
| goto out; |
| } |
| channel_add_input(res, 1); |
| } |
| res_htx->flags |= HTX_FL_EOM; |
| res->flags |= CF_EOI; |
| se_fl_set(appctx->sedesc, SE_FL_EOI); |
| appctx->st0 = PROMEX_ST_END; |
| /* fall through */ |
| |
| case PROMEX_ST_END: |
| if (!(res->flags & CF_SHUTR)) { |
| res->flags |= CF_READ_NULL; |
| sc_shutr(cs); |
| } |
| } |
| |
| out: |
| htx_to_buf(res_htx, &res->buf); |
| |
| /* eat the whole request */ |
| if (co_data(req)) { |
| req_htx = htx_from_buf(&req->buf); |
| co_htx_skip(req, req_htx, co_data(req)); |
| } |
| return; |
| |
| error: |
| res->flags |= CF_READ_NULL; |
| sc_shutr(cs); |
| sc_shutw(cs); |
| } |
| |
| struct applet promex_applet = { |
| .obj_type = OBJ_TYPE_APPLET, |
| .name = "<PROMEX>", /* used for logging */ |
| .init = promex_appctx_init, |
| .fct = promex_appctx_handle_io, |
| }; |
| |
| static enum act_parse_ret service_parse_prometheus_exporter(const char **args, int *cur_arg, struct proxy *px, |
| struct act_rule *rule, char **err) |
| { |
| /* Prometheus exporter service is only available on "http-request" rulesets */ |
| if (rule->from != ACT_F_HTTP_REQ) { |
| memprintf(err, "Prometheus exporter service only available on 'http-request' rulesets"); |
| return ACT_RET_PRS_ERR; |
| } |
| |
| /* Add applet pointer in the rule. */ |
| rule->applet = promex_applet; |
| |
| return ACT_RET_PRS_OK; |
| } |
| static void promex_register_build_options(void) |
| { |
| char *ptr = NULL; |
| |
| memprintf(&ptr, "Built with the Prometheus exporter as a service"); |
| hap_register_build_opts(ptr, 1); |
| } |
| |
| |
| static struct action_kw_list service_actions = { ILH, { |
| { "prometheus-exporter", service_parse_prometheus_exporter }, |
| { /* END */ } |
| }}; |
| |
| INITCALL1(STG_REGISTER, service_keywords_register, &service_actions); |
| INITCALL0(STG_REGISTER, promex_register_build_options); |