func (g *Prometheus) gatherURL(url string, acc telegraf.Accumulator) error {
resp, err := client.Get(url)
if err != nil {
return fmt.Errorf("error making HTTP request to %s: %s", url, err)
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return fmt.Errorf("%s returned HTTP status %s", url, resp.Status)
}
format := expfmt.ResponseFormat(resp.Header)
decoder := expfmt.NewDecoder(resp.Body, format)
options := &expfmt.DecodeOptions{
Timestamp: model.Now(),
}
sampleDecoder := &expfmt.SampleDecoder{
Dec: decoder,
Opts: options,
}
for {
var samples model.Vector
err := sampleDecoder.Decode(&samples)
if err == io.EOF {
break
} else if err != nil {
return fmt.Errorf("error getting processing samples for %s: %s",
url, err)
}
for _, sample := range samples {
tags := make(map[string]string)
for key, value := range sample.Metric {
if key == model.MetricNameLabel {
continue
}
tags[string(key)] = string(value)
}
acc.Add("prometheus_"+string(sample.Metric[model.MetricNameLabel]),
float64(sample.Value), tags)
}
}
return nil
}
func (s *Statsd) Gather(acc telegraf.Accumulator) error {
s.Lock()
defer s.Unlock()
for _, metric := range s.timings {
fields := make(map[string]interface{})
fields["mean"] = metric.stats.Mean()
fields["stddev"] = metric.stats.Stddev()
fields["upper"] = metric.stats.Upper()
fields["lower"] = metric.stats.Lower()
fields["count"] = metric.stats.Count()
for _, percentile := range s.Percentiles {
name := fmt.Sprintf("%v_percentile", percentile)
fields[name] = metric.stats.Percentile(percentile)
}
acc.AddFields(metric.name, fields, metric.tags)
}
if s.DeleteTimings {
s.timings = make(map[string]cachedtimings)
}
for _, metric := range s.gauges {
acc.Add(metric.name, metric.value, metric.tags)
}
if s.DeleteGauges {
s.gauges = make(map[string]cachedgauge)
}
for _, metric := range s.counters {
acc.Add(metric.name, metric.value, metric.tags)
}
if s.DeleteCounters {
s.counters = make(map[string]cachedcounter)
}
for _, metric := range s.sets {
acc.Add(metric.name, int64(len(metric.set)), metric.tags)
}
if s.DeleteSets {
s.sets = make(map[string]cachedset)
}
return nil
}
// gatherTableSchema can be used to gather stats on each schema
func (m *Mysql) gatherTableSchema(db *sql.DB, serv string, acc telegraf.Accumulator) error {
var (
dbList []string
servtag string
)
servtag, err := parseDSN(serv)
if err != nil {
servtag = "localhost"
}
// if the list of databases if empty, then get all databases
if len(m.TableSchemaDatabases) == 0 {
rows, err := db.Query(dbListQuery)
if err != nil {
return err
}
defer rows.Close()
var database string
for rows.Next() {
err = rows.Scan(&database)
if err != nil {
return err
}
dbList = append(dbList, database)
}
} else {
dbList = m.TableSchemaDatabases
}
for _, database := range dbList {
rows, err := db.Query(fmt.Sprintf(tableSchemaQuery, database))
if err != nil {
return err
}
defer rows.Close()
var (
tableSchema string
tableName string
tableType string
engine string
version float64
rowFormat string
tableRows float64
dataLength float64
indexLength float64
dataFree float64
createOptions string
)
for rows.Next() {
err = rows.Scan(
&tableSchema,
&tableName,
&tableType,
&engine,
&version,
&rowFormat,
&tableRows,
&dataLength,
&indexLength,
&dataFree,
&createOptions,
)
if err != nil {
return err
}
tags := map[string]string{"server": servtag}
tags["schema"] = tableSchema
tags["table"] = tableName
acc.Add(newNamespace("info_schema", "table_rows"), tableRows, tags)
dlTags := copyTags(tags)
dlTags["component"] = "data_length"
acc.Add(newNamespace("info_schema", "table_size", "data_length"), dataLength, dlTags)
ilTags := copyTags(tags)
ilTags["component"] = "index_length"
acc.Add(newNamespace("info_schema", "table_size", "index_length"), indexLength, ilTags)
dfTags := copyTags(tags)
dfTags["component"] = "data_free"
acc.Add(newNamespace("info_schema", "table_size", "data_free"), dataFree, dfTags)
versionTags := copyTags(tags)
versionTags["type"] = tableType
versionTags["engine"] = engine
versionTags["row_format"] = rowFormat
versionTags["create_options"] = createOptions
acc.Add(newNamespace("info_schema", "table_version"), version, versionTags)
}
}
return nil
}
func add(acc telegraf.Accumulator,
name string, val float64, tags map[string]string) {
if val >= 0 {
acc.Add(name, val, tags)
}
}
func (s *Statsd) Gather(acc telegraf.Accumulator) error {
s.Lock()
defer s.Unlock()
for _, metric := range s.timings {
acc.Add(metric.name+"_mean", metric.stats.Mean(), metric.tags)
acc.Add(metric.name+"_stddev", metric.stats.Stddev(), metric.tags)
acc.Add(metric.name+"_upper", metric.stats.Upper(), metric.tags)
acc.Add(metric.name+"_lower", metric.stats.Lower(), metric.tags)
acc.Add(metric.name+"_count", metric.stats.Count(), metric.tags)
for _, percentile := range s.Percentiles {
name := fmt.Sprintf("%s_percentile_%v", metric.name, percentile)
acc.Add(name, metric.stats.Percentile(percentile), metric.tags)
}
}
if s.DeleteTimings {
s.timings = make(map[string]cachedtimings)
}
for _, metric := range s.gauges {
acc.Add(metric.name, metric.value, metric.tags)
}
if s.DeleteGauges {
s.gauges = make(map[string]cachedgauge)
}
for _, metric := range s.counters {
acc.Add(metric.name, metric.value, metric.tags)
}
if s.DeleteCounters {
s.counters = make(map[string]cachedcounter)
}
for _, metric := range s.sets {
acc.Add(metric.name, int64(len(metric.set)), metric.tags)
}
if s.DeleteSets {
s.sets = make(map[string]cachedset)
}
return nil
}