| /* |
| * 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/compression.h> |
| #include <haproxy/dns.h> |
| #include <haproxy/frontend.h> |
| #include <haproxy/global.h> |
| #include <haproxy/http.h> |
| #include <haproxy/http_htx.h> |
| #include <haproxy/htx.h> |
| #include <haproxy/list.h> |
| #include <haproxy/listener.h> |
| #include <haproxy/log.h> |
| #include <haproxy/pipe.h> |
| #include <haproxy/pool.h> |
| #include <haproxy/proxy.h> |
| #include <haproxy/sample.h> |
| #include <haproxy/server.h> |
| #include <haproxy/ssl_sock.h> |
| #include <haproxy/stats.h> |
| #include <haproxy/stream.h> |
| #include <haproxy/stream_interface.h> |
| #include <haproxy/task.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_DONE, /* finished */ |
| }; |
| |
| /* Prometheus exporter flags (appctx->ctx.stats.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_SCOPE_GLOBAL 0x00000020 |
| #define PROMEX_FL_SCOPE_FRONT 0x00000040 |
| #define PROMEX_FL_SCOPE_BACK 0x00000080 |
| #define PROMEX_FL_SCOPE_SERVER 0x00000100 |
| #define PROMEX_FL_NO_MAINT_SRV 0x00000200 |
| |
| #define PROMEX_FL_SCOPE_ALL (PROMEX_FL_SCOPE_GLOBAL|PROMEX_FL_SCOPE_FRONT|PROMEX_FL_SCOPE_BACK|PROMEX_FL_SCOPE_SERVER) |
| |
| /* 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 |
| |
| /* Some labels for build_info */ |
| #define PROMEX_VERSION_LABEL "version=\"" HAPROXY_VERSION "\"" |
| #define PROMEX_BUILDINFO_LABEL PROMEX_VERSION_LABEL |
| |
| /* 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 */ |
| }; |
| |
| /* Global metrics */ |
| const struct promex_metric promex_global_metrics[INF_TOTAL_FIELDS] = { |
| //[INF_NAME] ignored |
| //[INF_VERSION], ignored |
| //[INF_RELEASE_DATE] ignored |
| [INF_BUILD_INFO] = { .n = IST("build_info"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [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_BYTES] = { .n = IST("max_memory_bytes"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [INF_POOL_ALLOC_BYTES] = { .n = IST("pool_allocated_bytes"), .type = PROMEX_MT_GAUGE, .flags = PROMEX_FL_INFO_METRIC }, |
| [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 |
| }; |
| |
| /* 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_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_SMAX] = { .n = IST("max_sessions"), .type = PROMEX_MT_GAUGE, .flags = (PROMEX_FL_FRONT_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_BACK_METRIC | PROMEX_FL_SRV_METRIC) }, |
| [ST_F_STOT] = { .n = IST("sessions_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_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_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_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_BACK_METRIC ) }, |
| [ST_F_DRESP] = { .n = IST("responses_denied_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_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 ) }, |
| [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_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] ignroed |
| //[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 ) }, |
| [ST_F_DSES] = { .n = IST("denied_sessions_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_METRIC ) }, |
| [ST_F_WREW] = { .n = IST("failed_header_rewriting_total"), .type = PROMEX_MT_COUNTER, .flags = (PROMEX_FL_FRONT_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_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) }, |
| }; |
| |
| /* Description of all stats fields */ |
| const struct ist promex_st_metric_desc[ST_F_TOTAL_FIELDS] = { |
| [ST_F_PXNAME] = IST("The proxy name."), |
| [ST_F_SVNAME] = IST("The service name (FRONTEND for frontend, BACKEND for backend, any name for server/listener)."), |
| [ST_F_QCUR] = IST("Current number of queued requests."), |
| [ST_F_QMAX] = IST("Maximum observed number of queued requests."), |
| [ST_F_SCUR] = IST("Current number of active sessions."), |
| [ST_F_SMAX] = IST("Maximum observed number of active sessions."), |
| [ST_F_SLIM] = IST("Configured session limit."), |
| [ST_F_STOT] = IST("Total number of sessions."), |
| [ST_F_BIN] = IST("Current total of incoming bytes."), |
| [ST_F_BOUT] = IST("Current total of outgoing bytes."), |
| [ST_F_DREQ] = IST("Total number of denied requests."), |
| [ST_F_DRESP] = IST("Total number of denied responses."), |
| [ST_F_EREQ] = IST("Total number of request errors."), |
| [ST_F_ECON] = IST("Total number of connection errors."), |
| [ST_F_ERESP] = IST("Total number of response errors."), |
| [ST_F_WRETR] = IST("Total number of retry warnings."), |
| [ST_F_WREDIS] = IST("Total number of redispatch warnings."), |
| [ST_F_STATUS] = IST("Current status of the service (frontend: 0=STOP, 1=UP - backend: 0=DOWN, 1=UP - server: 0=DOWN, 1=UP, 2=MAINT, 3=DRAIN, 4=NOLB)."), |
| [ST_F_WEIGHT] = IST("Service weight."), |
| [ST_F_ACT] = IST("Current number of active servers."), |
| [ST_F_BCK] = IST("Current number of backup servers."), |
| [ST_F_CHKFAIL] = IST("Total number of failed check (Only counts checks failed when the server is up)."), |
| [ST_F_CHKDOWN] = IST("Total number of UP->DOWN transitions."), |
| [ST_F_LASTCHG] = IST("Number of seconds since the last UP<->DOWN transition."), |
| [ST_F_DOWNTIME] = IST("Total downtime (in seconds) for the service."), |
| [ST_F_QLIMIT] = IST("Configured maxqueue for the server (0 meaning no limit)."), |
| [ST_F_PID] = IST("Process id (0 for first instance, 1 for second, ...)"), |
| [ST_F_IID] = IST("Unique proxy id."), |
| [ST_F_SID] = IST("Server id (unique inside a proxy)."), |
| [ST_F_THROTTLE] = IST("Current throttle percentage for the server, when slowstart is active, or no value if not in slowstart."), |
| [ST_F_LBTOT] = IST("Total number of times a service was selected, either for new sessions, or when redispatching."), |
| [ST_F_TRACKED] = IST("Id of proxy/server if tracking is enabled."), |
| [ST_F_TYPE] = IST("Service type (0=frontend, 1=backend, 2=server, 3=socket/listener)."), |
| [ST_F_RATE] = IST("Current number of sessions per second over last elapsed second."), |
| [ST_F_RATE_LIM] = IST("Configured limit on new sessions per second."), |
| [ST_F_RATE_MAX] = IST("Maximum observed number of sessions per second."), |
| [ST_F_CHECK_STATUS] = IST("Status of last health check (HCHK_STATUS_* values)."), |
| [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_HRSP_1XX] = IST("Total number of HTTP responses."), |
| [ST_F_HRSP_2XX] = IST("Total number of HTTP responses."), |
| [ST_F_HRSP_3XX] = IST("Total number of HTTP responses."), |
| [ST_F_HRSP_4XX] = IST("Total number of HTTP responses."), |
| [ST_F_HRSP_5XX] = IST("Total number of HTTP responses."), |
| [ST_F_HRSP_OTHER] = IST("Total number of HTTP responses."), |
| [ST_F_HANAFAIL] = IST("Total number of failed health checks."), |
| [ST_F_REQ_RATE] = IST("Current number of HTTP requests per second over last elapsed second."), |
| [ST_F_REQ_RATE_MAX] = IST("Maximum observed number of HTTP requests per second."), |
| [ST_F_REQ_TOT] = IST("Total number of HTTP requests received."), |
| [ST_F_CLI_ABRT] = IST("Total number of data transfers aborted by the client."), |
| [ST_F_SRV_ABRT] = IST("Total number of data transfers aborted by the server."), |
| [ST_F_COMP_IN] = IST("Total number of HTTP response bytes fed to the compressor."), |
| [ST_F_COMP_OUT] = IST("Total number of HTTP response bytes emitted by the compressor."), |
| [ST_F_COMP_BYP] = IST("Total number of bytes that bypassed the HTTP compressor (CPU/BW limit)."), |
| [ST_F_COMP_RSP] = IST("Total number of HTTP responses that were compressed."), |
| [ST_F_LASTSESS] = IST("Number of seconds since last session assigned to server/backend."), |
| [ST_F_LAST_CHK] = IST("Last health check contents or textual error"), |
| [ST_F_LAST_AGT] = IST("Last agent check contents or textual error"), |
| [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_AGENT_STATUS] = IST("Status of last agent check."), |
| [ST_F_AGENT_CODE] = IST("Numeric code reported by agent if any (unused for now)."), |
| [ST_F_AGENT_DURATION] = IST("Time in ms taken to finish last agent check."), |
| [ST_F_CHECK_DESC] = IST("Short human-readable description of the last health status."), |
| [ST_F_AGENT_DESC] = IST("Short human-readable description of the last agent status."), |
| [ST_F_CHECK_RISE] = IST("Server's \"rise\" parameter used by health checks"), |
| [ST_F_CHECK_FALL] = IST("Server's \"fall\" parameter used by health checks"), |
| [ST_F_CHECK_HEALTH] = IST("Server's health check value between 0 and rise+fall-1"), |
| [ST_F_AGENT_RISE] = IST("Agent's \"rise\" parameter, normally 1."), |
| [ST_F_AGENT_FALL] = IST("Agent's \"fall\" parameter, normally 1."), |
| [ST_F_AGENT_HEALTH] = IST("Agent's health parameter, between 0 and rise+fall-1"), |
| [ST_F_ADDR] = IST("address:port or \"unix\". IPv6 has brackets around the address."), |
| [ST_F_COOKIE] = IST("Server's cookie value or backend's cookie name."), |
| [ST_F_MODE] = IST("Proxy mode (tcp, http, health, unknown)."), |
| [ST_F_ALGO] = IST("Load balancing algorithm."), |
| [ST_F_CONN_RATE] = IST("Current number of connections per second over the last elapsed second."), |
| [ST_F_CONN_RATE_MAX] = IST("Maximum observed number of connections per second."), |
| [ST_F_CONN_TOT] = IST("Total number of connections."), |
| [ST_F_INTERCEPTED] = IST("Total number of intercepted HTTP requests."), |
| [ST_F_DCON] = IST("Total number of requests denied by \"tcp-request connection\" rules."), |
| [ST_F_DSES] = IST("Total number of requests denied by \"tcp-request session\" rules."), |
| [ST_F_WREW] = IST("Total number of failed header rewriting warnings."), |
| [ST_F_CONNECT] = IST("Total number of connection establishment attempts."), |
| [ST_F_REUSE] = IST("Total number of connection reuses."), |
| [ST_F_CACHE_LOOKUPS] = IST("Total number of HTTP cache lookups."), |
| [ST_F_CACHE_HITS] = IST("Total number of HTTP cache hits."), |
| [ST_F_SRV_ICUR] = IST("Current number of idle connections available for reuse"), |
| [ST_F_SRV_ILIM] = IST("Limit on the number of available idle 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)"), |
| [ST_F_EINT] = IST("Total number of internal errors."), |
| [ST_F_IDLE_CONN_CUR] = IST("Current number of unsafe idle connections."), |
| [ST_F_SAFE_CONN_CUR] = IST("Current number of safe idle connections."), |
| [ST_F_USED_CONN_CUR] = IST("Current number of connections in use."), |
| [ST_F_NEED_CONN_EST] = IST("Estimated needed number of connections."), |
| }; |
| |
| /* Specific labels for all info fields. Empty by default. */ |
| const struct ist promex_inf_metric_labels[INF_TOTAL_FIELDS] = { |
| [INF_BUILD_INFO] = IST(PROMEX_BUILDINFO_LABEL), |
| }; |
| |
| /* Specific labels for all stats fields. Empty by default. */ |
| const struct ist promex_st_metric_labels[ST_F_TOTAL_FIELDS] = { |
| [ST_F_HRSP_1XX] = IST("code=\"1xx\""), |
| [ST_F_HRSP_2XX] = IST("code=\"2xx\""), |
| [ST_F_HRSP_3XX] = IST("code=\"3xx\""), |
| [ST_F_HRSP_4XX] = IST("code=\"4xx\""), |
| [ST_F_HRSP_5XX] = IST("code=\"5xx\""), |
| [ST_F_HRSP_OTHER] = IST("code=\"other\""), |
| }; |
| |
| /* Return the server status: 0=DOWN, 1=UP, 2=MAINT, 3=DRAIN, 4=NOLB. */ |
| static int promex_srv_status(struct server *sv) |
| { |
| int state = 0; |
| |
| if (sv->cur_state == SRV_ST_RUNNING || sv->cur_state == SRV_ST_STARTING) { |
| state = 1; |
| if (sv->cur_admin & SRV_ADMF_DRAIN) |
| state = 3; |
| } |
| else if (sv->cur_state == SRV_ST_STOPPING) |
| state = 4; |
| |
| if (sv->cur_admin & SRV_ADMF_MAINT) |
| state = 2; |
| |
| 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 ist type; |
| |
| 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) { |
| if (istcat(out, ist(info_fields[appctx->st2].desc), max) == -1) |
| goto full; |
| } |
| else { |
| if (istcat(out, promex_st_metric_desc[appctx->st2], max) == -1) |
| goto full; |
| } |
| |
| if (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 ist *out, size_t max) |
| { |
| struct ist name = { .ptr = (char[PROMEX_MAX_NAME_LEN]){ 0 }, .len = 0 }; |
| 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 ((appctx->ctx.stats.flags & PROMEX_FL_METRIC_HDR) && |
| !promex_dump_metric_header(appctx, htx, metric, name, out, max)) |
| goto full; |
| |
| if (appctx->ctx.stats.flags & PROMEX_FL_INFO_METRIC) { |
| const struct ist label = promex_inf_metric_labels[appctx->st2]; |
| |
| if (istcat(out, name, max) == -1 || |
| (label.len && istcat(out, ist("{"), max) == -1) || |
| (label.len && istcat(out, label, max) == -1) || |
| (label.len && istcat(out, ist("}"), max) == -1) || |
| istcat(out, ist(" "), max) == -1) |
| goto full; |
| } |
| else { |
| struct proxy *px = appctx->ctx.stats.obj1; |
| struct server *srv = appctx->ctx.stats.obj2; |
| const struct ist label = promex_st_metric_labels[appctx->st2]; |
| |
| if (istcat(out, name, max) == -1 || |
| istcat(out, ist("{proxy=\""), max) == -1 || |
| istcat(out, ist2(px->id, strlen(px->id)), max) == -1 || |
| istcat(out, ist("\""), max) == -1 || |
| (srv && istcat(out, ist(",server=\""), max) == -1) || |
| (srv && istcat(out, ist2(srv->id, strlen(srv->id)), max) == -1) || |
| (srv && istcat(out, ist("\""), max) == -1) || |
| (label.len && istcat(out, ist(","), max) == -1) || |
| (label.len && istcat(out, label, max) == -1) || |
| 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; |
| |
| appctx->ctx.stats.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 field val; |
| struct channel *chn = si_ic(appctx->owner); |
| 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)) |
| return -1; |
| |
| for (; appctx->st2 < INF_TOTAL_FIELDS; appctx->st2++) { |
| if (!(promex_global_metrics[appctx->st2].flags & appctx->ctx.stats.flags)) |
| continue; |
| |
| switch (appctx->st2) { |
| case INF_BUILD_INFO: |
| val = mkf_u32(FN_GAUGE, 1); |
| break; |
| |
| default: |
| val = info[appctx->st2]; |
| } |
| |
| if (!promex_dump_metric(appctx, htx, prefix, &promex_global_metrics[appctx->st2], &val, &out, max)) |
| goto full; |
| |
| appctx->ctx.stats.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 proxy *px; |
| struct field val; |
| struct channel *chn = si_ic(appctx->owner); |
| 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; |
| |
| for (;appctx->st2 < ST_F_TOTAL_FIELDS; appctx->st2++) { |
| if (!(promex_st_metrics[appctx->st2].flags & appctx->ctx.stats.flags)) |
| continue; |
| |
| while (appctx->ctx.stats.obj1) { |
| px = appctx->ctx.stats.obj1; |
| |
| /* skip the disabled proxies, global frontend and non-networked ones */ |
| if (px->disabled || px->uuid <= 0 || !(px->cap & PR_CAP_FE)) |
| goto next_px; |
| |
| if (!stats_fill_fe_stats(px, stats, ST_F_TOTAL_FIELDS, &(appctx->st2))) |
| return -1; |
| |
| switch (appctx->st2) { |
| case ST_F_STATUS: |
| val = mkf_u32(FO_STATUS, !px->disabled); |
| break; |
| case ST_F_REQ_RATE_MAX: |
| case ST_F_REQ_TOT: |
| case ST_F_HRSP_1XX: |
| 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[appctx->st2]; |
| break; |
| 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; |
| val = stats[appctx->st2]; |
| appctx->ctx.stats.flags &= ~PROMEX_FL_METRIC_HDR; |
| break; |
| |
| default: |
| val = stats[appctx->st2]; |
| } |
| |
| if (!promex_dump_metric(appctx, htx, prefix, &promex_st_metrics[appctx->st2], &val, &out, max)) |
| goto full; |
| next_px: |
| appctx->ctx.stats.obj1 = px->next; |
| } |
| appctx->ctx.stats.flags |= PROMEX_FL_METRIC_HDR; |
| appctx->ctx.stats.obj1 = 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 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 proxy *px; |
| struct field val; |
| struct channel *chn = si_ic(appctx->owner); |
| 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; |
| |
| for (;appctx->st2 < ST_F_TOTAL_FIELDS; appctx->st2++) { |
| if (!(promex_st_metrics[appctx->st2].flags & appctx->ctx.stats.flags)) |
| continue; |
| |
| while (appctx->ctx.stats.obj1) { |
| px = appctx->ctx.stats.obj1; |
| |
| /* skip the disabled proxies, global frontend and non-networked ones */ |
| if (px->disabled || px->uuid <= 0 || !(px->cap & PR_CAP_BE)) |
| goto next_px; |
| |
| if (!stats_fill_be_stats(px, 0, stats, ST_F_TOTAL_FIELDS, &(appctx->st2))) |
| return -1; |
| |
| switch (appctx->st2) { |
| case ST_F_STATUS: |
| val = mkf_u32(FO_STATUS, (px->lbprm.tot_weight > 0 || !px->srv) ? 1 : 0); |
| break; |
| 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_HRSP_1XX: |
| 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[appctx->st2]; |
| break; |
| 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; |
| appctx->ctx.stats.flags &= ~PROMEX_FL_METRIC_HDR; |
| val = stats[appctx->st2]; |
| break; |
| |
| default: |
| val = stats[appctx->st2]; |
| } |
| |
| if (!promex_dump_metric(appctx, htx, prefix, &promex_st_metrics[appctx->st2], |
| &val, &out, max)) |
| goto full; |
| next_px: |
| appctx->ctx.stats.obj1 = px->next; |
| } |
| appctx->ctx.stats.flags |= PROMEX_FL_METRIC_HDR; |
| appctx->ctx.stats.obj1 = 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 proxy *px; |
| struct server *sv; |
| struct field val; |
| struct channel *chn = si_ic(appctx->owner); |
| 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; |
| |
| for (;appctx->st2 < ST_F_TOTAL_FIELDS; appctx->st2++) { |
| if (!(promex_st_metrics[appctx->st2].flags & appctx->ctx.stats.flags)) |
| continue; |
| |
| while (appctx->ctx.stats.obj1) { |
| px = appctx->ctx.stats.obj1; |
| |
| /* skip the disabled proxies, global frontend and non-networked ones */ |
| if (px->disabled || px->uuid <= 0 || !(px->cap & PR_CAP_BE)) |
| goto next_px; |
| |
| while (appctx->ctx.stats.obj2) { |
| sv = appctx->ctx.stats.obj2; |
| |
| if (!stats_fill_sv_stats(px, sv, 0, stats, ST_F_TOTAL_FIELDS, &(appctx->st2))) |
| return -1; |
| |
| if ((appctx->ctx.stats.flags & PROMEX_FL_NO_MAINT_SRV) && (sv->cur_admin & SRV_ADMF_MAINT)) |
| goto next_sv; |
| |
| switch (appctx->st2) { |
| case ST_F_STATUS: |
| val = mkf_u32(FO_STATUS, promex_srv_status(sv)); |
| break; |
| 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; |
| val = mkf_u32(FN_OUTPUT, sv->check.status); |
| break; |
| 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: |
| case ST_F_HRSP_1XX: |
| if (px->mode != PR_MODE_HTTP) |
| goto next_px; |
| val = stats[appctx->st2]; |
| break; |
| 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; |
| appctx->ctx.stats.flags &= ~PROMEX_FL_METRIC_HDR; |
| val = stats[appctx->st2]; |
| break; |
| |
| default: |
| val = stats[appctx->st2]; |
| } |
| |
| if (!promex_dump_metric(appctx, htx, prefix, &promex_st_metrics[appctx->st2], &val, &out, max)) |
| goto full; |
| next_sv: |
| appctx->ctx.stats.obj2 = sv->next; |
| } |
| |
| next_px: |
| appctx->ctx.stats.obj1 = px->next; |
| appctx->ctx.stats.obj2 = (appctx->ctx.stats.obj1 ? ((struct proxy *)appctx->ctx.stats.obj1)->srv : NULL); |
| } |
| appctx->ctx.stats.flags |= PROMEX_FL_METRIC_HDR; |
| appctx->ctx.stats.obj1 = proxies_list; |
| appctx->ctx.stats.obj2 = (appctx->ctx.stats.obj1 ? ((struct proxy *)appctx->ctx.stats.obj1)->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 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.obj1> as a pointer to the current proxy and <obj2> as |
| * a pointer to the current server/listener. */ |
| static int promex_dump_metrics(struct appctx *appctx, struct stream_interface *si, struct htx *htx) |
| { |
| int ret; |
| |
| switch (appctx->st1) { |
| case PROMEX_DUMPER_INIT: |
| appctx->ctx.stats.obj1 = NULL; |
| appctx->ctx.stats.obj2 = NULL; |
| appctx->ctx.stats.flags |= (PROMEX_FL_METRIC_HDR|PROMEX_FL_INFO_METRIC); |
| appctx->st2 = INF_NAME; |
| appctx->st1 = PROMEX_DUMPER_GLOBAL; |
| /* fall through */ |
| |
| case PROMEX_DUMPER_GLOBAL: |
| if (appctx->ctx.stats.flags & PROMEX_FL_SCOPE_GLOBAL) { |
| ret = promex_dump_global_metrics(appctx, htx); |
| if (ret <= 0) { |
| if (ret == -1) |
| goto error; |
| goto full; |
| } |
| } |
| |
| appctx->ctx.stats.obj1 = proxies_list; |
| appctx->ctx.stats.obj2 = NULL; |
| appctx->ctx.stats.flags &= ~PROMEX_FL_INFO_METRIC; |
| appctx->ctx.stats.flags |= (PROMEX_FL_METRIC_HDR|PROMEX_FL_FRONT_METRIC); |
| appctx->st2 = ST_F_PXNAME; |
| appctx->st1 = PROMEX_DUMPER_FRONT; |
| /* fall through */ |
| |
| case PROMEX_DUMPER_FRONT: |
| if (appctx->ctx.stats.flags & PROMEX_FL_SCOPE_FRONT) { |
| ret = promex_dump_front_metrics(appctx, htx); |
| if (ret <= 0) { |
| if (ret == -1) |
| goto error; |
| goto full; |
| } |
| } |
| |
| appctx->ctx.stats.obj1 = proxies_list; |
| appctx->ctx.stats.obj2 = NULL; |
| appctx->ctx.stats.flags &= ~PROMEX_FL_FRONT_METRIC; |
| appctx->ctx.stats.flags |= (PROMEX_FL_METRIC_HDR|PROMEX_FL_BACK_METRIC); |
| appctx->st2 = ST_F_PXNAME; |
| appctx->st1 = PROMEX_DUMPER_BACK; |
| /* fall through */ |
| |
| case PROMEX_DUMPER_BACK: |
| if (appctx->ctx.stats.flags & PROMEX_FL_SCOPE_BACK) { |
| ret = promex_dump_back_metrics(appctx, htx); |
| if (ret <= 0) { |
| if (ret == -1) |
| goto error; |
| goto full; |
| } |
| } |
| |
| appctx->ctx.stats.obj1 = proxies_list; |
| appctx->ctx.stats.obj2 = (appctx->ctx.stats.obj1 ? ((struct proxy *)appctx->ctx.stats.obj1)->srv : NULL); |
| appctx->ctx.stats.flags &= ~PROMEX_FL_BACK_METRIC; |
| appctx->ctx.stats.flags |= (PROMEX_FL_METRIC_HDR|PROMEX_FL_SRV_METRIC); |
| appctx->st2 = ST_F_PXNAME; |
| appctx->st1 = PROMEX_DUMPER_SRV; |
| /* fall through */ |
| |
| case PROMEX_DUMPER_SRV: |
| if (appctx->ctx.stats.flags & PROMEX_FL_SCOPE_SERVER) { |
| ret = promex_dump_srv_metrics(appctx, htx); |
| if (ret <= 0) { |
| if (ret == -1) |
| goto error; |
| goto full; |
| } |
| } |
| |
| appctx->ctx.stats.obj1 = NULL; |
| appctx->ctx.stats.obj2 = NULL; |
| appctx->ctx.stats.flags &= ~(PROMEX_FL_METRIC_HDR|PROMEX_FL_SRV_METRIC); |
| appctx->st2 = 0; |
| appctx->st1 = PROMEX_DUMPER_DONE; |
| /* fall through */ |
| |
| case PROMEX_DUMPER_DONE: |
| default: |
| break; |
| } |
| |
| return 1; |
| |
| full: |
| si_rx_room_blk(si); |
| return 0; |
| error: |
| /* unrecoverable error */ |
| appctx->ctx.stats.obj1 = NULL; |
| appctx->ctx.stats.obj2 = NULL; |
| appctx->ctx.stats.flags = 0; |
| appctx->st2 = 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 stream_interface *si) |
| { |
| struct channel *req = si_oc(si); |
| struct channel *res = si_ic(si); |
| 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) |
| appctx->ctx.stats.flags &= ~PROMEX_FL_SCOPE_ALL; |
| else if (*value == '*') |
| appctx->ctx.stats.flags |= PROMEX_FL_SCOPE_ALL; |
| else if (strcmp(value, "global") == 0) |
| appctx->ctx.stats.flags |= PROMEX_FL_SCOPE_GLOBAL; |
| else if (strcmp(value, "server") == 0) |
| appctx->ctx.stats.flags |= PROMEX_FL_SCOPE_SERVER; |
| else if (strcmp(value, "backend") == 0) |
| appctx->ctx.stats.flags |= PROMEX_FL_SCOPE_BACK; |
| else if (strcmp(value, "frontend") == 0) |
| appctx->ctx.stats.flags |= PROMEX_FL_SCOPE_FRONT; |
| else |
| goto error; |
| } |
| else if (strcmp(key, "no-maint") == 0) |
| appctx->ctx.stats.flags |= PROMEX_FL_NO_MAINT_SRV; |
| } |
| |
| end: |
| appctx->ctx.stats.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 stream_interface *si, struct htx *htx) |
| { |
| struct channel *chn = si_ic(appctx->owner); |
| 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); |
| si_rx_room_blk(si); |
| 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, struct proxy *px, struct stream *strm) |
| { |
| appctx->st0 = PROMEX_ST_INIT; |
| return 1; |
| } |
| |
| /* The main I/O handler for the promex applet. */ |
| static void promex_appctx_handle_io(struct appctx *appctx) |
| { |
| struct stream_interface *si = appctx->owner; |
| struct stream *s = si_strm(si); |
| struct channel *req = si_oc(si); |
| struct channel *res = si_ic(si); |
| struct htx *req_htx, *res_htx; |
| int ret; |
| |
| res_htx = htx_from_buf(&res->buf); |
| if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO)) |
| goto out; |
| |
| /* Check if the input buffer is available. */ |
| if (!b_size(&res->buf)) { |
| si_rx_room_blk(si); |
| goto out; |
| } |
| |
| switch (appctx->st0) { |
| case PROMEX_ST_INIT: |
| ret = promex_parse_uri(appctx, si); |
| 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, si, 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, si, res_htx); |
| if (ret <= 0) { |
| if (ret == -1) |
| goto error; |
| goto out; |
| } |
| appctx->st0 = PROMEX_ST_DONE; |
| /* fall through */ |
| |
| case PROMEX_ST_DONE: |
| /* Don't add TLR because mux-h1 will take care of it */ |
| res_htx->flags |= HTX_FL_EOI; /* no more data are expected. Only EOM remains to add now */ |
| if (!htx_add_endof(res_htx, HTX_BLK_EOM)) { |
| si_rx_room_blk(si); |
| goto out; |
| } |
| channel_add_input(res, 1); |
| appctx->st0 = PROMEX_ST_END; |
| /* fall through */ |
| |
| case PROMEX_ST_END: |
| if (!(res->flags & CF_SHUTR)) { |
| res->flags |= CF_READ_NULL; |
| si_shutr(si); |
| } |
| } |
| |
| 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; |
| si_shutr(si); |
| si_shutw(si); |
| } |
| |
| 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); |