Add metric_version option to mysql input (#3954)

plugins/inputs/mysql/v1/mysql.go

@@ -0,0 +1,195 @@
+package v1
+
+import (
+	"bytes"
+	"database/sql"
+	"strconv"
+)
+
+type Mapping struct {
+	OnServer string
+	InExport string
+}
+
+var Mappings = []*Mapping{
+	{
+		OnServer: "Aborted_",
+		InExport: "aborted_",
+	},
+	{
+		OnServer: "Bytes_",
+		InExport: "bytes_",
+	},
+	{
+		OnServer: "Com_",
+		InExport: "commands_",
+	},
+	{
+		OnServer: "Created_",
+		InExport: "created_",
+	},
+	{
+		OnServer: "Handler_",
+		InExport: "handler_",
+	},
+	{
+		OnServer: "Innodb_",
+		InExport: "innodb_",
+	},
+	{
+		OnServer: "Key_",
+		InExport: "key_",
+	},
+	{
+		OnServer: "Open_",
+		InExport: "open_",
+	},
+	{
+		OnServer: "Opened_",
+		InExport: "opened_",
+	},
+	{
+		OnServer: "Qcache_",
+		InExport: "qcache_",
+	},
+	{
+		OnServer: "Table_",
+		InExport: "table_",
+	},
+	{
+		OnServer: "Tokudb_",
+		InExport: "tokudb_",
+	},
+	{
+		OnServer: "Threads_",
+		InExport: "threads_",
+	},
+	{
+		OnServer: "Access_",
+		InExport: "access_",
+	},
+	{
+		OnServer: "Aria__",
+		InExport: "aria_",
+	},
+	{
+		OnServer: "Binlog__",
+		InExport: "binlog_",
+	},
+	{
+		OnServer: "Busy_",
+		InExport: "busy_",
+	},
+	{
+		OnServer: "Connection_",
+		InExport: "connection_",
+	},
+	{
+		OnServer: "Delayed_",
+		InExport: "delayed_",
+	},
+	{
+		OnServer: "Empty_",
+		InExport: "empty_",
+	},
+	{
+		OnServer: "Executed_",
+		InExport: "executed_",
+	},
+	{
+		OnServer: "Executed_",
+		InExport: "executed_",
+	},
+	{
+		OnServer: "Feature_",
+		InExport: "feature_",
+	},
+	{
+		OnServer: "Flush_",
+		InExport: "flush_",
+	},
+	{
+		OnServer: "Last_",
+		InExport: "last_",
+	},
+	{
+		OnServer: "Master_",
+		InExport: "master_",
+	},
+	{
+		OnServer: "Max_",
+		InExport: "max_",
+	},
+	{
+		OnServer: "Memory_",
+		InExport: "memory_",
+	},
+	{
+		OnServer: "Not_",
+		InExport: "not_",
+	},
+	{
+		OnServer: "Performance_",
+		InExport: "performance_",
+	},
+	{
+		OnServer: "Prepared_",
+		InExport: "prepared_",
+	},
+	{
+		OnServer: "Rows_",
+		InExport: "rows_",
+	},
+	{
+		OnServer: "Rpl_",
+		InExport: "rpl_",
+	},
+	{
+		OnServer: "Select_",
+		InExport: "select_",
+	},
+	{
+		OnServer: "Slave_",
+		InExport: "slave_",
+	},
+	{
+		OnServer: "Slow_",
+		InExport: "slow_",
+	},
+	{
+		OnServer: "Sort_",
+		InExport: "sort_",
+	},
+	{
+		OnServer: "Subquery_",
+		InExport: "subquery_",
+	},
+	{
+		OnServer: "Tc_",
+		InExport: "tc_",
+	},
+	{
+		OnServer: "Threadpool_",
+		InExport: "threadpool_",
+	},
+	{
+		OnServer: "wsrep_",
+		InExport: "wsrep_",
+	},
+	{
+		OnServer: "Uptime_",
+		InExport: "uptime_",
+	},
+}
+
+func ParseValue(value sql.RawBytes) (float64, bool) {
+	if bytes.Compare(value, []byte("Yes")) == 0 || bytes.Compare(value, []byte("ON")) == 0 {
+		return 1, true
+	}
+
+	if bytes.Compare(value, []byte("No")) == 0 || bytes.Compare(value, []byte("OFF")) == 0 {
+		return 0, true
+	}
+	n, err := strconv.ParseFloat(string(value), 64)
+	return n, err == nil
+}