Move to i_s / p_s and add user info (not quite complete)

[pstop.git] / p_s / table_lock_waits_summary_by_table / table_lock_waits_summary_by_table.go

diff --git a/p_s/table_lock_waits_summary_by_table/table_lock_waits_summary_by_table.go b/p_s/table_lock_waits_summary_by_table/table_lock_waits_summary_by_table.go
new file mode 100644 (file)
index 0000000..a4aacbd
--- /dev/null
+++ b/p_s/table_lock_waits_summary_by_table/table_lock_waits_summary_by_table.go
@@ -0,0 +1,101 @@
+// This file contains the library routines for managing the
+// table_lock_waits_summary_by_table table.
+package table_lock_waits_summary_by_table
+
+import (
+       "database/sql"
+       _ "github.com/go-sql-driver/mysql"
+       "time"
+
+       "github.com/sjmudd/pstop/lib"
+       "github.com/sjmudd/pstop/p_s"
+)
+
+// a table of rows
+type Table_lock_waits_summary_by_table struct {
+       p_s.RelativeStats
+       p_s.InitialTime
+       initial table_lock_waits_summary_by_table_rows // initial data for relative values
+       current table_lock_waits_summary_by_table_rows // last loaded values
+       results table_lock_waits_summary_by_table_rows // results (maybe with subtraction)
+       totals  table_lock_waits_summary_by_table_row  // totals of results
+}
+
+// Collect data from the db, then merge it in.
+func (t *Table_lock_waits_summary_by_table) Collect(dbh *sql.DB) {
+       start := time.Now()
+       t.current = select_tlwsbt_rows(dbh)
+
+       if len(t.initial) == 0 && len(t.current) > 0 {
+               t.initial = make(table_lock_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) {
+               t.initial = make(table_lock_waits_summary_by_table_rows, len(t.current))
+               copy(t.initial, t.current)
+       }
+
+       t.make_results()
+       lib.Logger.Println("Table_lock_waits_summary_by_table.Collect() took:", time.Duration(time.Since(start)).String())
+}
+
+func (t *Table_lock_waits_summary_by_table) make_results() {
+       // lib.Logger.Println( "- t.results set from t.current" )
+       t.results = make(table_lock_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()
+       // lib.Logger.Println( "- collecting t.totals from t.results" )
+       t.totals = t.results.totals()
+}
+
+// reset the statistics to current values
+func (t *Table_lock_waits_summary_by_table) SyncReferenceValues() {
+       t.SetNow()
+       t.initial = make(table_lock_waits_summary_by_table_rows, len(t.current))
+       copy(t.initial, t.current)
+
+       t.make_results()
+}
+
+// return the headings for a table
+func (t Table_lock_waits_summary_by_table) Headings() string {
+       var r table_lock_waits_summary_by_table_row
+
+       return r.headings()
+}
+
+// return the rows we need for displaying
+func (t Table_lock_waits_summary_by_table) RowContent(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].row_content(t.totals))
+               }
+       }
+
+       return rows
+}
+
+// return all the totals
+func (t Table_lock_waits_summary_by_table) TotalRowContent() string {
+       return t.totals.row_content(t.totals)
+}
+
+// return an empty string of data (for filling in)
+func (t Table_lock_waits_summary_by_table) EmptyRowContent() string {
+       var emtpy table_lock_waits_summary_by_table_row
+       return emtpy.row_content(emtpy)
+}
+
+func (t Table_lock_waits_summary_by_table) Description() string {
+       return "Locks by Table Name (table_lock_waits_summary_by_table)"
+}