// Connect to the database and spin, running the top command and outputting
// the results appropriately.
func (self *MongoTop) Run() error {
// test the connection
session, err := self.SessionProvider.GetSession()
if err != nil {
return err
}
session.Close()
connUrl := self.Options.Host
if self.Options.Port != "" {
connUrl = connUrl + ":" + self.Options.Port
}
util.Printlnf("connected to: %v", connUrl)
// the results used to be compared to each other
var previousResults command.Command
if self.OutputOptions.Locks {
previousResults = &command.ServerStatus{}
} else {
previousResults = &command.Top{}
}
// populate the first run of the previous results
err = self.SessionProvider.RunCommand("admin", previousResults)
if err != nil {
return fmt.Errorf("error running top command: %v", err)
}
for {
// sleep
time.Sleep(self.Sleeptime)
var topResults command.Command
if self.OutputOptions.Locks {
topResults = &command.ServerStatus{}
} else {
topResults = &command.Top{}
}
// run the top command against the database
err = self.SessionProvider.RunCommand("admin", topResults)
if err != nil {
return fmt.Errorf("error running top command: %v", err)
}
// diff the results
diff, err := topResults.Diff(previousResults)
if err != nil {
return fmt.Errorf("error computing diff: %v", err)
}
// output the results
if err := self.Outputter.Output(diff); err != nil {
return fmt.Errorf("error outputting results: %v", err)
}
// update the previous results
previousResults = topResults
if self.Once {
return nil
}
}
}
// Print the tool version to stdout. Returns whether or not the version flag
// is specified.
func (self *ToolOptions) PrintVersion() bool {
if self.Version {
util.Printlnf("%v version: %v", self.AppName, self.VersionStr)
}
return self.Version
}