X-Git-Url: http://git.iain.cx/?a=blobdiff_plain;f=performance_schema%2Ftable_io_waits_summary_by_table%2Ftable_io_waits_summary_by_table.go;fp=performance_schema%2Ftable_io_waits_summary_by_table%2Ftable_io_waits_summary_by_table.go;h=0ef79dc56cdfe995e0375058e9c3c8a2d907b233;hb=38376bf5db9af25660b8183b2c022d079bb2b5ea;hp=0000000000000000000000000000000000000000;hpb=c24180cda0bbab4ae07c87bf2cdf54e61d358142;p=pstop.git

diff --git a/performance_schema/table_io_waits_summary_by_table/table_io_waits_summary_by_table.go b/performance_schema/table_io_waits_summary_by_table/table_io_waits_summary_by_table.go
new file mode 100644
index 0000000..0ef79dc
--- /dev/null
+++ b/performance_schema/table_io_waits_summary_by_table/table_io_waits_summary_by_table.go
@@ -0,0 +1,205 @@
+// performance_schema - library routines for pstop.
+//
+// This file contains the library routines for managing the
+// table_io_waits_by_table table.
+package table_io_waits_summary_by_table
+
+import (
+	"database/sql"
+	"fmt"
+
+	"github.com/sjmudd/pstop/lib"
+	ps "github.com/sjmudd/pstop/performance_schema"
+)
+
+// a table of rows
+type Table_io_waits_summary_by_table struct {
+	ps.RelativeStats
+	ps.InitialTime
+	want_latency bool
+	initial      table_io_waits_summary_by_table_rows // initial data for relative values
+	current      table_io_waits_summary_by_table_rows // last loaded values
+	results      table_io_waits_summary_by_table_rows // results (maybe with subtraction)
+	totals       table_io_waits_summary_by_table_row  // totals of results
+}
+
+func (t *Table_io_waits_summary_by_table) SetWantsLatency(want_latency bool) {
+	t.want_latency = want_latency
+}
+
+func (t Table_io_waits_summary_by_table) WantsLatency() bool {
+	return t.want_latency
+}
+
+// Collect() collects data from the db, updating initial
+// values if needed, and then subtracting initial values if we want
+// relative values, after which it stores totals.
+func (t *Table_io_waits_summary_by_table) Collect(dbh *sql.DB) {
+	lib.Logger.Println("Table_io_waits_summary_by_table.Collect() BEGIN")
+	t.current = select_tiwsbt_rows(dbh)
+	lib.Logger.Println("- t.current set from", len(t.current), "collected row(s) from SELECT")
+
+	if len(t.initial) == 0 && len(t.current) > 0 {
+		// lib.Logger.Println("- setting t.initial to initial value" )
+		t.initial = make(table_io_waits_summary_by_table_rows, len(t.current))
+		copy(t.initial, t.current)
+	}
+
+	// check for reload initial characteristics
+	if t.initial.needs_refresh(t.current) {
+		// lib.Logger.Println( "- t.initial data needs refreshing!" )
+		t.initial = make(table_io_waits_summary_by_table_rows, len(t.current))
+		copy(t.initial, t.current)
+	}
+
+	t.make_results()
+
+	// lib.Logger.Println( "t.initial:", t.initial )
+	// lib.Logger.Println( "t.current:", t.current )
+	lib.Logger.Println("t.results:", t.results)
+	lib.Logger.Println("t.totals:", t.totals)
+	lib.Logger.Println("Table_io_waits_summary_by_table.Collect() END")
+}
+
+func (t *Table_io_waits_summary_by_table) make_results() {
+	// lib.Logger.Println( "- t.results set from t.current" )
+	t.results = make(table_io_waits_summary_by_table_rows, len(t.current))
+	copy(t.results, t.current)
+	if t.WantRelativeStats() {
+		// lib.Logger.Println( "- subtracting t.initial from t.results as WantRelativeStats()" )
+		t.results.subtract(t.initial)
+	}
+
+	// lib.Logger.Println( "- sorting t.results" )
+	t.results.Sort(t.want_latency)
+	// lib.Logger.Println( "- collecting t.totals from t.results" )
+	t.totals = t.results.totals()
+}
+
+// reset the statistics to current values
+func (t *Table_io_waits_summary_by_table) UpdateInitialValues() {
+	// lib.Logger.Println( "Table_io_waits_summary_by_table.UpdateInitialValues() BEGIN" )
+
+	t.initial = make(table_io_waits_summary_by_table_rows, len(t.current))
+	copy(t.initial, t.current)
+
+	t.make_results()
+
+	// lib.Logger.Println( "Table_io_waits_summary_by_table.UpdateInitialValues() END" )
+}
+
+func (t *Table_io_waits_summary_by_table) Headings() string {
+	if t.want_latency {
+		return t.latencyHeadings()
+	} else {
+		return t.opsHeadings()
+	}
+}
+
+func (t Table_io_waits_summary_by_table) RowContent(max_rows int) []string {
+	if t.want_latency {
+		return t.latencyRowContent(max_rows)
+	} else {
+		return t.opsRowContent(max_rows)
+	}
+}
+
+func (t Table_io_waits_summary_by_table) EmptyRowContent() string {
+	if t.want_latency {
+		return t.emptyLatencyRowContent()
+	} else {
+		return t.emptyOpsRowContent()
+	}
+}
+
+func (t Table_io_waits_summary_by_table) TotalRowContent() string {
+	if t.want_latency {
+		return t.totalLatencyRowContent()
+	} else {
+		return t.totalOpsRowContent()
+	}
+}
+
+func (t Table_io_waits_summary_by_table) Description() string {
+	if t.want_latency {
+		return t.latencyDescription()
+	} else {
+		return t.opsDescription()
+	}
+}
+
+func (t *Table_io_waits_summary_by_table) latencyHeadings() string {
+	var r table_io_waits_summary_by_table_row
+
+	return r.latency_headings()
+}
+
+func (t *Table_io_waits_summary_by_table) opsHeadings() string {
+	var r table_io_waits_summary_by_table_row
+
+	return r.ops_headings()
+}
+
+func (t Table_io_waits_summary_by_table) opsRowContent(max_rows int) []string {
+	rows := make([]string, 0, max_rows)
+
+	for i := range t.results {
+		if i < max_rows {
+			rows = append(rows, t.results[i].ops_row_content(t.totals))
+		}
+	}
+
+	return rows
+}
+
+func (t Table_io_waits_summary_by_table) latencyRowContent(max_rows int) []string {
+	rows := make([]string, 0, max_rows)
+
+	for i := range t.results {
+		if i < max_rows {
+			rows = append(rows, t.results[i].latency_row_content(t.totals))
+		}
+	}
+
+	return rows
+}
+
+func (t Table_io_waits_summary_by_table) emptyOpsRowContent() string {
+	var r table_io_waits_summary_by_table_row
+
+	return r.ops_row_content(r)
+}
+
+func (t Table_io_waits_summary_by_table) emptyLatencyRowContent() string {
+	var r table_io_waits_summary_by_table_row
+
+	return r.latency_row_content(r)
+}
+
+func (t Table_io_waits_summary_by_table) totalOpsRowContent() string {
+	return t.totals.ops_row_content(t.totals)
+}
+
+func (t Table_io_waits_summary_by_table) totalLatencyRowContent() string {
+	return t.totals.latency_row_content(t.totals)
+}
+
+func (t Table_io_waits_summary_by_table) latencyDescription() string {
+	count := t.count_rows()
+	return fmt.Sprintf("Latency by Table Name (table_io_waits_summary_by_table) %d rows", count)
+}
+
+func (t Table_io_waits_summary_by_table) opsDescription() string {
+	count := t.count_rows()
+	return fmt.Sprintf("Operations by Table Name (table_io_waits_summary_by_table) %d rows", count)
+}
+
+func (t Table_io_waits_summary_by_table) count_rows() int {
+	var count int
+	for row := range t.results {
+		if t.results[row].SUM_TIMER_WAIT > 0 {
+			count++
+		}
+	}
+	return count
+}