// Converts the value to a str
func (*str) Call(args ...interface{}) (v interface{}, err error) {
if len(args) != 1 {
return 0, errors.New("string expects exactly one argument")
}
switch a := args[0].(type) {
case int64:
v = strconv.FormatInt(a, 10)
case float64:
v = strconv.FormatFloat(a, 'f', -1, 64)
case bool:
v = strconv.FormatBool(a)
case time.Duration:
v = influxql.FormatDuration(a)
case string:
v = a
default:
err = fmt.Errorf("cannot convert %T to string", a)
}
return
}
func TestContinuousQueryService_ResampleOptions(t *testing.T) {
s := NewTestService(t)
mc := NewMetaClient(t)
mc.CreateDatabase("db", "")
mc.CreateContinuousQuery("db", "cq", `CREATE CONTINUOUS QUERY cq ON db RESAMPLE EVERY 10s FOR 2m BEGIN SELECT mean(value) INTO cpu_mean FROM cpu GROUP BY time(1m) END`)
s.MetaClient = mc
db := s.MetaClient.Database("db")
cq, err := NewContinuousQuery(db.Name, &db.ContinuousQueries[0])
if err != nil {
t.Fatal(err)
} else if cq.Resample.Every != 10*time.Second {
t.Errorf("expected resample every to be 10s, got %s", influxql.FormatDuration(cq.Resample.Every))
} else if cq.Resample.For != 2*time.Minute {
t.Errorf("expected resample for 2m, got %s", influxql.FormatDuration(cq.Resample.For))
}
// Set RunInterval high so we can trigger using Run method.
s.RunInterval = 10 * time.Minute
done := make(chan struct{})
expectCallCnt := 0
callCnt := 0
// Set a callback for ExecuteStatement.
s.QueryExecutor.StatementExecutor = &StatementExecutor{
ExecuteStatementFn: func(stmt influxql.Statement, ctx *influxql.ExecutionContext) error {
callCnt++
if callCnt >= expectCallCnt {
done <- struct{}{}
}
ctx.Results <- &influxql.Result{}
return nil
},
}
s.Open()
defer s.Close()
// Set the 'now' time to the start of a 10 minute interval. Then trigger a run.
// This should trigger two queries (one for the current time interval, one for the previous).
now := time.Now().Truncate(10 * time.Minute)
expectCallCnt += 2
s.RunCh <- &RunRequest{Now: now}
if err := wait(done, 100*time.Millisecond); err != nil {
t.Fatal(err)
}
// Trigger another run 10 seconds later. Another two queries should happen,
// but it will be a different two queries.
expectCallCnt += 2
s.RunCh <- &RunRequest{Now: now.Add(10 * time.Second)}
if err := wait(done, 100*time.Millisecond); err != nil {
t.Fatal(err)
}
// Reset the time period and send the initial request at 5 seconds after the
// 10 minute mark. There should be exactly one call since the current interval is too
// young and only one interval matches the FOR duration.
expectCallCnt += 1
s.Run("", "", now.Add(5*time.Second))
if err := wait(done, 100*time.Millisecond); err != nil {
t.Fatal(err)
}
// No overflow should be sent.
if err := wait(done, 100*time.Millisecond); err == nil {
t.Error("too many queries executed")
}
}