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Add minimal MySQL version to Scraper interface (#328)

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* Add Version method to Scraper interface.
* Skip scrapers for unsupported MySQL versions.

Signed-off-by: Alexey Palazhchenko <alexey.palazhchenko@percona.com>
This commit is contained in:
Alexey Palazhchenko
2018-10-29 18:35:38 +03:00
committed by Ben Kochie
parent ff14a3d4cb
commit 1465a0b0e0
30 changed files with 267 additions and 8 deletions
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8
collector/info_schema_innodb_sys_tablespaces.go
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@ -66,6 +66,11 @@ func (ScrapeInfoSchemaInnodbTablespaces) Help() string {
return "Collect metrics from information_schema.innodb_sys_tablespaces"
}
// Version of MySQL from which scraper is available.
func (ScrapeInfoSchemaInnodbTablespaces) Version() float64 {
return 5.7
}
// Scrape collects data from database connection and sends it over channel as prometheus metric.
func (ScrapeInfoSchemaInnodbTablespaces) Scrape(ctx context.Context, db *sql.DB, ch chan<- prometheus.Metric) error {
tablespacesRows, err := db.QueryContext(ctx, innodbTablespacesQuery)
@ -113,3 +118,6 @@ func (ScrapeInfoSchemaInnodbTablespaces) Scrape(ctx context.Context, db *sql.DB,
return nil
}
// check interface
var _ Scraper = ScrapeInfoSchemaInnodbTablespaces{}