func (self *TerminalOutputter) Output(diff command.Diff) error {
tableRows := diff.ToRows()
// get the length of the longest row (the one with the most fields)
longestRow := 0
for _, row := range tableRows {
longestRow = util.MaxInt(longestRow, len(row))
}
// bookkeep the length of the longest member of each column
longestFields := make([]int, longestRow)
for _, row := range tableRows {
for idx, field := range row {
longestFields[idx] = util.MaxInt(longestFields[idx], len(field))
}
}
// write out each row
for _, row := range tableRows {
for idx, rowEl := range row {
fmt.Printf("\t\t%v%v", strings.Repeat(" ",
longestFields[idx]-len(rowEl)), rowEl)
}
fmt.Printf("\n")
}
fmt.Printf("\n")
return nil
}
// DumpIntents iterates through the previously-created intents and
// dumps all of the found collections.
func (dump *MongoDump) DumpIntents() error {
resultChan := make(chan error)
var jobs int
if dump.ToolOptions != nil && dump.ToolOptions.HiddenOptions != nil {
jobs = dump.ToolOptions.HiddenOptions.MaxProcs
}
jobs = util.MaxInt(jobs, 1)
if jobs > 1 {
dump.manager.Finalize(intents.LongestTaskFirst)
} else {
dump.manager.Finalize(intents.Legacy)
}
log.Logf(log.Info, "dumping with %v job threads", jobs)
// start a goroutine for each job thread
for i := 0; i < jobs; i++ {
go func(id int) {
log.Logf(log.DebugHigh, "starting dump routine with id=%v", id)
for {
intent := dump.manager.Pop()
if intent == nil {
log.Logf(log.DebugHigh, "ending dump routine with id=%v, no more work to do", id)
resultChan <- nil
return
}
err := dump.DumpIntent(intent)
if err != nil {
resultChan <- err
return
}
dump.manager.Finish(intent)
}
}(i)
}
// wait until all goroutines are done or one of them errors out
for i := 0; i < jobs; i++ {
if err := <-resultChan; err != nil {
return err
}
}
return nil
}
// Implement the Diff interface. Serializes the lock totals into rows by
// namespace.
func (self *ServerStatusDiff) ToRows() [][]string {
// to return
rows := [][]string{}
// the header row
headerRow := []string{"db", "total", "read", "write"}
rows = append(rows, headerRow)
// create the rows for the individual namespaces
for ns, nsTotals := range self.Totals {
nsRow := []string{ns}
for _, total := range nsTotals {
nsRow = append(nsRow, strconv.Itoa(util.MaxInt(0, total/1000))+"ms")
}
rows = append(rows, nsRow)
}
return rows
}
// Implement the Diff interface. Serializes the information about the time
// spent in locks into rows to be printed.
func (self *TopDiff) ToRows() [][]string {
// to return
rows := [][]string{}
// the header row
headerRow := []string{"ns", "total", "read", "write",
time.Now().Format("2006-01-02T15:04:05")}
rows = append(rows, headerRow)
// sort the namespaces
nsSorted := []string{}
for ns := range self.Totals {
nsSorted = append(nsSorted, ns)
}
sort.Strings(nsSorted)
// create the rows for the individual namespaces, iterating in sorted
// order
for _, ns := range nsSorted {
nsTotals := self.Totals[ns]
// some namespaces are skipped
if skipNamespace(ns) {
continue
}
nsRow := []string{ns}
for _, total := range nsTotals {
nsRow = append(nsRow, strconv.Itoa(util.MaxInt(0, total/1000))+"ms")
}
rows = append(rows, nsRow)
}
return rows
}
