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main.go
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package main
import (
"database/sql"
"flag"
"net"
"net/http"
"time"
_ "github.com/mattn/go-oci8"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/prometheus/common/log"
)
// Metric name parts.
const (
namespace = "oracledb"
exporter = "exporter"
)
// Exporter collects Oracle DB metrics. It implements prometheus.Collector.
type Exporter struct {
duration, error prometheus.Gauge
totalScrapes prometheus.Counter
scrapeErrors *prometheus.CounterVec
session *prometheus.GaugeVec
sysstat *prometheus.GaugeVec
waitclass *prometheus.GaugeVec
sysmetric *prometheus.GaugeVec
interconnect *prometheus.GaugeVec
uptime *prometheus.GaugeVec
up *prometheus.GaugeVec
tablespace *prometheus.GaugeVec
recovery *prometheus.GaugeVec
redo *prometheus.GaugeVec
cache *prometheus.GaugeVec
alertlog *prometheus.GaugeVec
alertdate *prometheus.GaugeVec
services *prometheus.GaugeVec
parameter *prometheus.GaugeVec
query *prometheus.GaugeVec
asmspace *prometheus.GaugeVec
tablerows *prometheus.GaugeVec
tablebytes *prometheus.GaugeVec
indexbytes *prometheus.GaugeVec
lobbytes *prometheus.GaugeVec
lastIp string
vTabRows bool
vTabBytes bool
vIndBytes bool
vLobBytes bool
vRecovery bool
}
var (
// Version will be set at build time.
Version = "1.1.3"
listenAddress = flag.String("web.listen-address", ":9161", "Address to listen on for web interface and telemetry.")
metricPath = flag.String("web.telemetry-path", "/metrics", "Path under which to expose metrics.")
pTabRows = flag.Bool("tablerows", false, "Expose Table rows (CAN TAKE VERY LONG)")
pTabBytes = flag.Bool("tablebytes", false, "Expose Table size (CAN TAKE VERY LONG)")
pIndBytes = flag.Bool("indexbytes", false, "Expose Index size for any Table (CAN TAKE VERY LONG)")
pLobBytes = flag.Bool("lobbytes", false, "Expose Lobs size for any Table (CAN TAKE VERY LONG)")
pRecovery = flag.Bool("recovery", false, "Expose Recovery percentage usage of FRA (CAN TAKE VERY LONG)")
configFile = flag.String("configfile", "oracle.conf", "ConfigurationFile in YAML format.")
logFile = flag.String("logfile", "exporter.log", "Logfile for parsed Oracle Alerts.")
accessFile = flag.String("accessfile", "access.conf", "Last access for parsed Oracle Alerts.")
landingPage = []byte(`<html>
<head><title>Prometheus Oracle exporter</title></head>
<body>
<h1>Prometheus Oracle exporter</h1><p>
<a href='` + *metricPath + `'>Metrics</a></p>
<a href='` + *metricPath + `?tablerows=true'>Metrics with tablerows</a></p>
<a href='` + *metricPath + `?tablebytes=true'>Metrics with tablebytes</a></p>
<a href='` + *metricPath + `?indexbytes=true'>Metrics with indexbytes</a></p>
<a href='` + *metricPath + `?lobbytes=true'>Metrics with lobbytes</a></p>
<a href='` + *metricPath + `?recovery=true'>Metrics with recovery</a></p>
</body>
</html>`)
)
// NewExporter returns a new Oracle DB exporter for the provided DSN.
func NewExporter() *Exporter {
return &Exporter{
duration: prometheus.NewGauge(prometheus.GaugeOpts{
Namespace: namespace,
Subsystem: exporter,
Name: "last_scrape_duration_seconds",
Help: "Duration of the last scrape of metrics from Oracle DB.",
}),
totalScrapes: prometheus.NewCounter(prometheus.CounterOpts{
Namespace: namespace,
Subsystem: exporter,
Name: "scrapes_total",
Help: "Total number of times Oracle DB was scraped for metrics.",
}),
scrapeErrors: prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: namespace,
Subsystem: exporter,
Name: "scrape_errors_total",
Help: "Total number of times an error occured scraping a Oracle database.",
}, []string{"collector"}),
error: prometheus.NewGauge(prometheus.GaugeOpts{
Namespace: namespace,
Subsystem: exporter,
Name: "last_scrape_error",
Help: "Whether the last scrape of metrics from Oracle DB resulted in an error (1 for error, 0 for success).",
}),
sysmetric: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "sysmetric",
Help: "Gauge metric with read/write pysical IOPs/bytes (v$sysmetric).",
}, []string{"database","dbinstance","type"}),
waitclass: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "waitclass",
Help: "Gauge metric with Waitevents (v$waitclassmetric).",
}, []string{"database","dbinstance","type"}),
sysstat: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "sysstat",
Help: "Gauge metric with commits/rollbacks/parses (v$sysstat).",
}, []string{"database","dbinstance","type"}),
session: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "session",
Help: "Gauge metric user/system active/passive sessions (v$session).",
}, []string{"database","dbinstance","type","state"}),
uptime: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "uptime",
Help: "Gauge metric with uptime in days of the Instance.",
}, []string{"database","dbinstance"}),
tablespace: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "tablespace",
Help: "Gauge metric with total/free size of the Tablespaces.",
}, []string{"database","dbinstance","type","name","contents","autoextend"}),
interconnect: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "interconnect",
Help: "Gauge metric with interconnect block transfers (v$sysstat).",
}, []string{"database","dbinstance","type"}),
recovery: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "recovery",
Help: "Gauge metric with percentage usage of FRA (v$recovery_file_dest).",
}, []string{"database","dbinstance","type"}),
redo: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "redo",
Help: "Gauge metric with Redo log switches over last 5 min (v$log_history).",
}, []string{"database","dbinstance"}),
cache: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "cachehitratio",
Help: "Gauge metric witch Cache hit ratios (v$sysmetric).",
}, []string{"database","dbinstance","type"}),
up: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "up",
Help: "Whether the Oracle server is up.",
}, []string{"database","dbinstance"}),
alertlog: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "error",
Help: "Oracle Errors occured during configured interval.",
}, []string{"database","dbinstance","code","description","ignore"}),
alertdate: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "error_unix_seconds",
Help: "Unixtime of Alertlog modified Date.",
}, []string{"database","dbinstance"}),
services: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "services",
Help: "Active Oracle Services (v$active_services).",
}, []string{"database","dbinstance","name"}),
parameter: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "parameter",
Help: "oracle Configuration Parameters (v$parameter).",
}, []string{"database","dbinstance","name"}),
query: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "query",
Help: "Self defined Queries from Configuration File.",
}, []string{"database","dbinstance","name"}),
asmspace: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "asmspace",
Help: "Gauge metric with total/free size of the ASM Diskgroups.",
}, []string{"database","dbinstance","type","name"}),
tablerows: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "tablerows",
Help: "Gauge metric with rows of all Tables.",
}, []string{"database","dbinstance","owner","table_name","tablespace"}),
tablebytes: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "tablebytes",
Help: "Gauge metric with bytes of all Tables.",
}, []string{"database","dbinstance","owner","table_name"}),
indexbytes: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "indexbytes",
Help: "Gauge metric with bytes of all Indexes per Table.",
}, []string{"database","dbinstance","owner","table_name"}),
lobbytes: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Name: "lobbytes",
Help: "Gauge metric with bytes of all Lobs per Table.",
}, []string{"database","dbinstance","owner","table_name"}),
}
}
// ScrapeQuery collects metrics from self defined queries from configuration file.
func (e *Exporter) ScrapeQuery() {
var (
rows *sql.Rows
err error
)
for _, conn := range config.Cfgs {
//num metric_name
//43 sessions
if conn.db != nil {
for _, query := range conn.Queries {
rows, err = conn.db.Query(query.Sql)
if err != nil {
continue
}
defer rows.Close()
for rows.Next() {
var value float64
if err := rows.Scan(&value); err != nil {
break
}
e.query.WithLabelValues(conn.Database,conn.Instance,query.Name).Set(value)
}
}
}
}
}
// ScrapeParameters collects metrics from the v$parameters view.
func (e *Exporter) ScrapeParameter() {
var (
rows *sql.Rows
err error
)
for _, conn := range config.Cfgs {
//num metric_name
//43 sessions
if conn.db != nil {
rows, err = conn.db.Query(`select name,value from v$parameter WHERE num=43`)
if err != nil {
continue
}
defer rows.Close()
for rows.Next() {
var name string
var value float64
if err := rows.Scan(&name,&value); err != nil {
break
}
name = cleanName(name)
e.parameter.WithLabelValues(conn.Database,conn.Instance,name).Set(value)
}
}
}
}
// ScrapeServices collects metrics from the v$active_services view.
func (e *Exporter) ScrapeServices() {
var (
rows *sql.Rows
err error
)
for _, conn := range config.Cfgs {
if conn.db != nil {
rows, err = conn.db.Query(`select name from v$active_services`)
if err != nil {
continue
}
defer rows.Close()
for rows.Next() {
var name string
if err := rows.Scan(&name); err != nil {
break
}
name = cleanName(name)
e.services.WithLabelValues(conn.Database,conn.Instance,name).Set(1)
}
}
}
}
// ScrapeCache collects session metrics from the v$sysmetrics view.
func (e *Exporter) ScrapeCache() {
var (
rows *sql.Rows
err error
)
for _, conn := range config.Cfgs {
//metric_id metric_name
//2000 Buffer Cache Hit Ratio
//2050 Cursor Cache Hit Ratio
//2112 Library Cache Hit Ratio
//2110 Row Cache Hit Ratio
if conn.db != nil {
rows, err = conn.db.Query(`select metric_name,value
from v$sysmetric
where group_id=2 and metric_id in (2000,2050,2112,2110)`)
if err != nil {
continue
}
defer rows.Close()
for rows.Next() {
var name string
var value float64
if err := rows.Scan(&name, &value); err != nil {
break
}
name = cleanName(name)
e.cache.WithLabelValues(conn.Database,conn.Instance,name).Set(value)
}
}
}
}
// ScrapeRecovery collects tablespace metrics
func (e *Exporter) ScrapeRedo() {
var (
rows *sql.Rows
err error
)
for _, conn := range config.Cfgs {
if conn.db != nil {
rows, err = conn.db.Query(`select count(*) from v$log_history where first_time > sysdate - 1/24/12`)
if err != nil {
continue
}
defer rows.Close()
for rows.Next() {
var value float64
if err := rows.Scan(&value); err != nil {
break
}
e.redo.WithLabelValues(conn.Database,conn.Instance).Set(value)
}
}
}
}
// ScrapeRecovery collects tablespace metrics
func (e *Exporter) ScrapeRecovery() {
var (
rows *sql.Rows
err error
)
for _, conn := range config.Cfgs {
if conn.db != nil {
rows, err = conn.db.Query(`SELECT sum(percent_space_used) , sum(percent_space_reclaimable)
from V$FLASH_RECOVERY_AREA_USAGE`)
if err != nil {
continue
}
defer rows.Close()
for rows.Next() {
var used float64
var recl float64
if err := rows.Scan(&used, &recl); err != nil {
break
}
e.recovery.WithLabelValues(conn.Database,conn.Instance,"percent_space_used").Set(used)
e.recovery.WithLabelValues(conn.Database,conn.Instance,"percent_space_reclaimable").Set(recl)
}
}
}
}
// ScrapeTablespaces collects tablespace metrics
func (e *Exporter) ScrapeInterconnect() {
var (
rows *sql.Rows
err error
)
for _, conn := range config.Cfgs {
if conn.db != nil {
rows, err = conn.db.Query(`SELECT name, value
FROM V$SYSSTAT
WHERE name in ('gc cr blocks served','gc cr blocks flushed','gc cr blocks received')`)
if err != nil {
continue
}
defer rows.Close()
for rows.Next() {
var name string
var value float64
if err := rows.Scan(&name, &value); err != nil {
break
}
name = cleanName(name)
e.interconnect.WithLabelValues(conn.Database,conn.Instance,name).Set(value)
}
}
}
}
// ScrapeAsmspace collects ASM metrics
func (e *Exporter) ScrapeAsmspace() {
var (
rows *sql.Rows
err error
)
for _, conn := range config.Cfgs {
if conn.db != nil {
rows, err = conn.db.Query(`SELECT g.name, sum(d.total_mb), sum(d.free_mb)
FROM v$asm_disk d, v$asm_diskgroup g
WHERE d.group_number = g.group_number
AND d.header_status = 'MEMBER'
GROUP by g.name, g.group_number`)
if err != nil {
continue
}
defer rows.Close()
for rows.Next() {
var name string
var tsize float64
var tfree float64
if err := rows.Scan(&name, &tsize, &tfree); err != nil {
break
}
e.asmspace.WithLabelValues(conn.Database,conn.Instance,"total",name).Set(tsize)
e.asmspace.WithLabelValues(conn.Database,conn.Instance,"free",name).Set(tfree)
e.asmspace.WithLabelValues(conn.Database,conn.Instance,"used",name).Set(tsize-tfree)
}
}
}
}
// ScrapeTablespaces collects tablespace metrics
func (e *Exporter) ScrapeTablespace() {
var (
rows *sql.Rows
err error
)
for _, conn := range config.Cfgs {
if conn.db != nil {
rows, err = conn.db.Query(`WITH
getsize AS (SELECT tablespace_name, max(autoextensible) autoextensible, SUM(bytes) tsize
FROM dba_data_files GROUP BY tablespace_name),
getfree as (SELECT tablespace_name, contents, SUM(blocks*block_size) tfree
FROM DBA_LMT_FREE_SPACE a, v$tablespace b, dba_tablespaces c
WHERE a.TABLESPACE_ID= b.ts# and b.name=c.tablespace_name
GROUP BY tablespace_name,contents)
SELECT a.tablespace_name, b.contents, a.tsize, b.tfree, a.autoextensible autoextend
FROM GETSIZE a, GETFREE b
WHERE a.tablespace_name = b.tablespace_name
UNION
SELECT tablespace_name, 'TEMPORARY', sum(tablespace_size), sum(free_space), 'NO'
FROM dba_temp_free_space
GROUP BY tablespace_name`)
if err != nil {
continue
}
defer rows.Close()
for rows.Next() {
var name string
var contents string
var tsize float64
var tfree float64
var auto string
if err := rows.Scan(&name, &contents, &tsize, &tfree, &auto); err != nil {
break
}
e.tablespace.WithLabelValues(conn.Database,conn.Instance,"total",name,contents,auto).Set(tsize)
e.tablespace.WithLabelValues(conn.Database,conn.Instance,"free",name,contents,auto).Set(tfree)
e.tablespace.WithLabelValues(conn.Database,conn.Instance,"used",name,contents,auto).Set(tsize-tfree)
}
}
}
}
// ScrapeSessions collects session metrics from the v$session view.
func (e *Exporter) ScrapeSession() {
var (
rows *sql.Rows
err error
)
for _, conn := range config.Cfgs {
if conn.db != nil {
rows, err = conn.db.Query(`SELECT decode(username,NULL,'SYSTEM','SYS','SYSTEM','USER'), status,count(*)
FROM v$session
GROUP BY decode(username,NULL,'SYSTEM','SYS','SYSTEM','USER'),status`)
if err != nil {
continue
}
defer rows.Close()
for rows.Next() {
var user string
var status string
var value float64
if err := rows.Scan(&user, &status, &value); err != nil {
break
}
e.session.WithLabelValues(conn.Database,conn.Instance,user,status).Set(value)
}
}
}
}
// ScrapeUptime Instance uptime
func (e *Exporter) ScrapeUptime() {
var uptime float64
for _, conn := range config.Cfgs {
if conn.db != nil {
err := conn.db.QueryRow("select sysdate-startup_time from v$instance").Scan(&uptime)
if err != nil {
return
}
e.uptime.WithLabelValues(conn.Database,conn.Instance).Set(uptime)
}
}
}
// ScrapeSysstat collects activity metrics from the v$sysstat view.
func (e *Exporter) ScrapeSysstat() {
var (
rows *sql.Rows
err error
)
for _, conn := range config.Cfgs {
if conn.db != nil {
rows, err = conn.db.Query(`SELECT name, value FROM v$sysstat
WHERE statistic# in (6,7,1084,1089)`)
if err != nil {
continue
}
defer rows.Close()
for rows.Next() {
var name string
var value float64
if err := rows.Scan(&name, &value); err != nil {
break
}
name = cleanName(name)
e.sysstat.WithLabelValues(conn.Database,conn.Instance,name).Set(value)
}
}
}
}
// ScrapeWaitTime collects wait time metrics from the v$waitclassmetric view.
func (e *Exporter) ScrapeWaitclass() {
var (
rows *sql.Rows
err error
)
for _, conn := range config.Cfgs {
if conn.db != nil {
rows, err = conn.db.Query(`SELECT n.wait_class, round(m.time_waited/m.INTSIZE_CSEC,3)
FROM v$waitclassmetric m, v$system_wait_class n
WHERE m.wait_class_id=n.wait_class_id and n.wait_class != 'Idle'`)
if err != nil {
continue
}
defer rows.Close()
for rows.Next() {
var name string
var value float64
if err := rows.Scan(&name, &value); err != nil {
break
}
name = cleanName(name)
e.waitclass.WithLabelValues(conn.Database,conn.Instance,name).Set(value)
}
}
}
}
// ScrapeSysmetrics collects session metrics from the v$sysmetrics view.
func (e *Exporter) ScrapeSysmetric() {
var (
rows *sql.Rows
err error
)
for _, conn := range config.Cfgs {
//metric_id metric_name
//2092 Physical Read Total IO Requests Per Sec
//2093 Physical Read Total Bytes Per Sec
//2100 Physical Write Total IO Requests Per Sec
//2124 Physical Write Total Bytes Per Sec
if conn.db != nil {
rows, err = conn.db.Query("select metric_name,value from v$sysmetric where metric_id in (2092,2093,2124,2100)")
if err != nil {
continue
}
defer rows.Close()
for rows.Next() {
var name string
var value float64
if err := rows.Scan(&name, &value); err != nil {
break
}
name = cleanName(name)
e.sysmetric.WithLabelValues(conn.Database,conn.Instance,name).Set(value)
}
}
}
}
// ScrapeTablerows collects bytes from dba_tables view.
func (e *Exporter) ScrapeTablerows() {
var (
rows *sql.Rows
err error
)
for _, conn := range config.Cfgs {
if conn.db != nil {
rows, err = conn.db.Query(`select owner,table_name, tablespace_name, num_rows
from dba_tables
where owner not like '%SYS%' and num_rows is not null`)
if err != nil {
continue
}
defer rows.Close()
for rows.Next() {
var owner string
var name string
var space string
var value float64
if err := rows.Scan(&owner, &name, &space, &value); err != nil {
break
}
name = cleanName(name)
e.tablerows.WithLabelValues(conn.Database,conn.Instance,owner,name,space).Set(value)
}
}
}
}
func (e *Exporter) ScrapeTablebytes() {
// ScrapeTablebytes collects bytes from dba_tables/dba_segments view.
var (
rows *sql.Rows
err error
)
for _, conn := range config.Cfgs {
if conn.db != nil {
rows, err = conn.db.Query(`SELECT tab.owner, tab.table_name, stab.bytes
FROM dba_tables tab, dba_segments stab
WHERE stab.owner = tab.owner AND stab.segment_name = tab.table_name
AND tab.owner NOT LIKE '%SYS%'`)
if err != nil {
continue
}
defer rows.Close()
for rows.Next() {
var owner string
var name string
var value float64
if err = rows.Scan(&owner, &name, &value); err != nil {
break
}
name = cleanName(name)
e.tablebytes.WithLabelValues(conn.Database,conn.Instance,owner,name).Set(value)
}
}
}
}
// ScrapeTablebytes collects bytes from dba_indexes/dba_segments view.
func (e *Exporter) ScrapeIndexbytes() {
var (
rows *sql.Rows
err error
)
for _, conn := range config.Cfgs {
if conn.db != nil {
rows, err = conn.db.Query(`select table_owner,table_name, sum(bytes)
from dba_indexes ind, dba_segments seg
WHERE ind.owner=seg.owner and ind.index_name=seg.segment_name
and table_owner NOT LIKE '%SYS%'
group by table_owner,table_name`)
if err != nil {
continue
}
defer rows.Close()
for rows.Next() {
var owner string
var name string
var value float64
if err = rows.Scan(&owner, &name, &value); err != nil {
break
}
name = cleanName(name)
e.indexbytes.WithLabelValues(conn.Database,conn.Instance,owner,name).Set(value)
}
}
}
}
// ScrapeLobbytes collects bytes from dba_lobs/dba_segments view.
func (e *Exporter) ScrapeLobbytes() {
var (
rows *sql.Rows
err error
)
for _, conn := range config.Cfgs {
if conn.db != nil {
rows, err = conn.db.Query(`select l.owner, l.table_name, sum(bytes)
from dba_lobs l, dba_segments seg
WHERE l.owner=seg.owner and l.table_name=seg.segment_name
and l.owner NOT LIKE '%SYS%'
group by l.owner,l.table_name`)
if err != nil {
continue
}
defer rows.Close()
for rows.Next() {
var owner string
var name string
var value float64
if err = rows.Scan(&owner, &name, &value); err != nil {
break
}
name = cleanName(name)
e.lobbytes.WithLabelValues(conn.Database,conn.Instance,owner,name).Set(value)
}
}
}
}
// Describe describes all the metrics exported by the Oracle exporter.
func (e *Exporter) Describe(ch chan<- *prometheus.Desc) {
e.duration.Describe(ch)
e.totalScrapes.Describe(ch)
e.scrapeErrors.Describe(ch)
e.session.Describe(ch)
e.sysstat.Describe(ch)
e.waitclass.Describe(ch)
e.sysmetric.Describe(ch)
e.interconnect.Describe(ch)
e.tablespace.Describe(ch)
e.recovery.Describe(ch)
e.redo.Describe(ch)
e.cache.Describe(ch)
e.uptime.Describe(ch)
e.up.Describe(ch)
e.alertlog.Describe(ch)
e.alertdate.Describe(ch)
e.services.Describe(ch)
e.parameter.Describe(ch)
e.query.Describe(ch)
e.asmspace.Describe(ch)
e.tablerows.Describe(ch)
e.tablebytes.Describe(ch)
e.indexbytes.Describe(ch)
e.lobbytes.Describe(ch)
}
// Connect the DBs and gather Databasename and Instancename
func (e *Exporter) Connect() {
var dbname string
var inname string
var err error
for i, conf := range config.Cfgs {
// Close Connect from former scrape that not closed properly
if config.Cfgs[i].db != nil {
config.Cfgs[i].db.Close()
config.Cfgs[i].db = nil
}
if len(conf.Connection) > 0 {
config.Cfgs[i].db , err = sql.Open("oci8", conf.Connection)
if err == nil {
err = config.Cfgs[i].db.QueryRow("select db_unique_name,instance_name from v$database,v$instance").Scan(&dbname,&inname)
if err == nil {
if (len(conf.Database)==0) || (len(conf.Instance)==0) {
config.Cfgs[i].Database = dbname
config.Cfgs[i].Instance = inname
}
e.up.WithLabelValues(conf.Database,conf.Instance).Set(1)
} else {
config.Cfgs[i].db.Close()
e.up.WithLabelValues(conf.Database,conf.Instance).Set(0)
log.Errorln("Error connecting to database:", err)
//log.Infoln("Connect OK, Inital query failed: ", conf.Connection)
}
}
} else {
//log.Infoln("Dummy Connection: ", conf.Database)
e.up.WithLabelValues(conf.Database,conf.Instance).Set(0)
}
}
e.session.Reset()
e.sysstat.Reset()
e.waitclass.Reset()
e.sysmetric.Reset()
e.interconnect.Reset()
e.tablespace.Reset()
e.recovery.Reset()
e.redo.Reset()
e.cache.Reset()
e.uptime.Reset()
e.alertlog.Reset()
e.alertdate.Reset()
e.services.Reset()
e.parameter.Reset()
e.query.Reset()
e.asmspace.Reset()
e.tablerows.Reset()
e.tablebytes.Reset()
e.indexbytes.Reset()
e.lobbytes.Reset()
}
// Close Connections
func (e *Exporter) Close() {
for _, conn := range config.Cfgs {
if conn.db != nil {
conn.db.Close()
conn.db = nil
}
}
}
// Collect implements prometheus.Collector.
func (e *Exporter) Collect(ch chan<- prometheus.Metric) {
var err error
e.totalScrapes.Inc()
defer func(begun time.Time) {
e.duration.Set(time.Since(begun).Seconds())
if err == nil {
e.error.Set(0)
} else {
e.error.Set(1)
}
}(time.Now())
e.Connect()
e.up.Collect(ch)
e.ScrapeUptime()
e.uptime.Collect(ch)
e.ScrapeSession()
e.session.Collect(ch)
e.ScrapeSysstat()
e.sysstat.Collect(ch)
e.ScrapeWaitclass()
e.waitclass.Collect(ch)
e.ScrapeSysmetric()
e.sysmetric.Collect(ch)
e.ScrapeTablespace()
e.tablespace.Collect(ch)
e.ScrapeInterconnect()
e.interconnect.Collect(ch)
if e.vRecovery || *pRecovery {
e.ScrapeRecovery()
e.recovery.Collect(ch)
}
e.ScrapeRedo()
e.redo.Collect(ch)
e.ScrapeCache()
e.cache.Collect(ch)
e.ScrapeAlertlog()
e.alertlog.Collect(ch)
e.alertdate.Collect(ch)
e.ScrapeServices()
e.services.Collect(ch)
e.ScrapeParameter()
e.parameter.Collect(ch)
e.ScrapeQuery()
e.query.Collect(ch)
e.ScrapeAsmspace()
e.asmspace.Collect(ch)
if e.vTabRows || *pTabRows {
e.ScrapeTablerows()
e.tablerows.Collect(ch)
}
if e.vTabBytes || *pTabBytes {
e.ScrapeTablebytes()
e.tablebytes.Collect(ch)
}
if e.vIndBytes || *pIndBytes {
e.ScrapeIndexbytes()
e.indexbytes.Collect(ch)
}
if e.vLobBytes || *pLobBytes {
e.ScrapeLobbytes()
e.lobbytes.Collect(ch)
}
ch <- e.duration
ch <- e.totalScrapes
ch <- e.error
e.scrapeErrors.Collect(ch)
e.Close()
}
func (e *Exporter) Handler(w http.ResponseWriter, r *http.Request) {
e.lastIp = ""
ip, _, err := net.SplitHostPort(r.RemoteAddr)
if err == nil {
e.lastIp = ip
}
e.vTabRows = false
e.vTabBytes = false
e.vIndBytes = false
e.vLobBytes = false
e.vRecovery = false
if r.URL.Query().Get("tablerows") == "true" {; e.vTabRows = true; }
if r.URL.Query().Get("tablebytes") == "true" {; e.vTabBytes = true; }
if r.URL.Query().Get("indexbytes") == "true" {; e.vIndBytes = true; }
if r.URL.Query().Get("lobbytes") == "true" {; e.vLobBytes = true; }
if r.URL.Query().Get("recovery") == "true" {; e.vRecovery = true; }
promhttp.Handler().ServeHTTP(w, r)
}
func main() {
flag.Parse()
log.Infoln("Starting Prometheus Oracle exporter " + Version)
if loadConfig() {
log.Infoln("Config loaded: ", *configFile)
exporter := NewExporter()
prometheus.MustRegister(exporter)
http.HandleFunc(*metricPath, exporter.Handler)
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {w.Write(landingPage)})
log.Infoln("Listening on", *listenAddress)
log.Fatal(http.ListenAndServe(*listenAddress, nil))
}
}