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package client
import (
"strings"
"testing"
"github.com/mimecast/dtail/internal/mapr"
"github.com/mimecast/dtail/internal/protocol"
)
func TestAggregateResetsPendingLocalStateOnGenerationChange(t *testing.T) {
query := mustSessionStateQuery(t, "select status,count(status) from stats group by status")
state := NewSessionState(query)
aggregate := NewAggregate("srv1", state)
countStorage := aggregateCountStorage(t, query)
oldSet := aggregate.group.GetSet("ERROR")
oldSet.Samples = 1
oldSet.FValues[countStorage] = 1
rawQuery := "select status,count(status) from warnings group by status"
if _, err := state.CommitQuery(rawQuery, 2); err != nil {
t.Fatalf("CommitQuery() error = %v", err)
}
snapshot := state.Snapshot()
message := strings.Join([]string{
"WARN",
"1",
aggregateCountStorage(t, snapshot.Query) + protocol.AggregateKVDelimiter + "1",
"",
}, protocol.AggregateDelimiter)
if err := aggregate.Aggregate(message); err != nil {
t.Fatalf("Aggregate() error = %v", err)
}
result, numRows, err := snapshot.GlobalGroup.Result(snapshot.Query, 10, nil)
if err != nil {
t.Fatalf("Result() error = %v", err)
}
if numRows != 1 {
t.Fatalf("numRows = %d, want 1", numRows)
}
if !strings.Contains(result, "1") {
t.Fatalf("expected one new-generation aggregate row, got %q", result)
}
}
func TestAggregateRejectsMalformedMessage(t *testing.T) {
query := mustSessionStateQuery(t, "select count(status) from stats group by status")
state := NewSessionState(query)
aggregate := NewAggregate("srv1", state)
if err := aggregate.Aggregate("broken"); err == nil {
t.Fatalf("expected Aggregate() to reject malformed messages")
}
}
func TestAggregateFlushMergesPendingLocalState(t *testing.T) {
query := mustSessionStateQuery(t, "select status,count(status) from stats group by status")
state := NewSessionState(query)
aggregate := NewAggregate("srv1", state)
countStorage := aggregateCountStorage(t, query)
set := aggregate.group.GetSet("ERROR")
set.Samples = 3
set.FValues[countStorage] = 3
if err := aggregate.Flush(); err != nil {
t.Fatalf("Flush() error = %v", err)
}
result, numRows, err := state.Snapshot().GlobalGroup.Result(query, 10, nil)
if err != nil {
t.Fatalf("Result() error = %v", err)
}
if numRows != 1 {
t.Fatalf("numRows = %d, want 1", numRows)
}
if !strings.Contains(result, "3") {
t.Fatalf("expected flushed aggregate row, got %q", result)
}
}
func aggregateCountStorage(t *testing.T, query *mapr.Query) string {
t.Helper()
for _, selectCondition := range query.Select {
if selectCondition.Operation == mapr.Count {
return selectCondition.FieldStorage
}
}
t.Fatalf("query %q does not contain count() storage", query.RawQuery)
return ""
}
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