func (s *Server) appendClusterService(c cluster.Config) {
srv := cluster.NewService(c)
srv.TSDBStore = s.TSDBStore
srv.MetaStore = s.MetaStore
s.Services = append(s.Services, srv)
s.ClusterService = srv
}
// Ensure the shard writer returns an error when the server fails to accept the write.
func TestShardWriter_WriteShard_Error(t *testing.T) {
ts := newTestWriteService(writeShardFail)
s := cluster.NewService(cluster.Config{})
s.Listener = ts.muxln
s.TSDBStore = ts
if err := s.Open(); err != nil {
t.Fatal(err)
}
defer s.Close()
defer ts.Close()
w := cluster.NewShardWriter(time.Minute)
w.MetaStore = &metaStore{host: ts.ln.Addr().String()}
now := time.Now()
shardID := uint64(1)
ownerID := uint64(2)
var points []models.Point
points = append(points, models.MustNewPoint(
"cpu", models.Tags{"host": "server01"}, map[string]interface{}{"value": int64(100)}, now,
))
if err := w.WriteShard(shardID, ownerID, points); err == nil || err.Error() != "error code 1: write shard 1: failed to write" {
t.Fatalf("unexpected error: %v", err)
}
}
// Ensure the shard writer returns an error when dialing times out.
func TestShardWriter_Write_ErrDialTimeout(t *testing.T) {
ts := newTestWriteService(writeShardSuccess)
s := cluster.NewService(cluster.Config{})
s.Listener = ts.muxln
s.TSDBStore = ts
if err := s.Open(); err != nil {
t.Fatal(err)
}
defer s.Close()
defer ts.Close()
w := cluster.NewShardWriter(time.Nanosecond)
w.MetaStore = &metaStore{host: ts.ln.Addr().String()}
now := time.Now()
shardID := uint64(1)
ownerID := uint64(2)
var points []models.Point
points = append(points, models.MustNewPoint(
"cpu", models.Tags{"host": "server01"}, map[string]interface{}{"value": int64(100)}, now,
))
if err, exp := w.WriteShard(shardID, ownerID, points), "i/o timeout"; err == nil || !strings.Contains(err.Error(), exp) {
t.Fatalf("expected error %v, to contain %s", err, exp)
}
}
// Ensure the shard writer returns an error when we can't get a connection.
func TestShardWriter_Write_PoolMax(t *testing.T) {
ts := newTestWriteService(writeShardSlow)
s := cluster.NewService(cluster.Config{
ShardWriterTimeout: toml.Duration(100 * time.Millisecond),
})
s.Listener = ts.muxln
s.TSDBStore = ts
if err := s.Open(); err != nil {
t.Fatal(err)
}
defer s.Close()
defer ts.Close()
w := cluster.NewShardWriter(100*time.Millisecond, 1)
w.MetaClient = &metaClient{host: ts.ln.Addr().String()}
now := time.Now()
shardID := uint64(1)
ownerID := uint64(2)
var points []models.Point
points = append(points, models.MustNewPoint(
"cpu", models.Tags{"host": "server01"}, map[string]interface{}{"value": int64(100)}, now,
))
go w.WriteShard(shardID, ownerID, points)
time.Sleep(time.Millisecond)
if err := w.WriteShard(shardID, ownerID, points); err == nil || err.Error() != "timed out waiting for free connection" {
t.Fatalf("unexpected error: %v", err)
}
}
// Ensure the shard writer can successful write a multiple requests.
func TestShardWriter_WriteShard_Multiple(t *testing.T) {
ts := newTestWriteService(writeShardSuccess)
s := cluster.NewService(cluster.Config{})
s.Listener = ts.muxln
s.TSDBStore = ts
if err := s.Open(); err != nil {
t.Fatal(err)
}
defer s.Close()
defer ts.Close()
w := cluster.NewShardWriter(time.Minute)
w.MetaStore = &metaStore{host: ts.ln.Addr().String()}
// Build a single point.
now := time.Now()
var points []models.Point
points = append(points, models.MustNewPoint("cpu", models.Tags{"host": "server01"}, map[string]interface{}{"value": int64(100)}, now))
// Write to shard twice and close.
if err := w.WriteShard(1, 2, points); err != nil {
t.Fatal(err)
} else if err := w.WriteShard(1, 2, points); err != nil {
t.Fatal(err)
} else if err := w.Close(); err != nil {
t.Fatal(err)
}
// Validate response.
responses, err := ts.ResponseN(1)
if err != nil {
t.Fatal(err)
} else if responses[0].shardID != 1 {
t.Fatalf("unexpected shard id: %d", responses[0].shardID)
}
// Validate point.
if p := responses[0].points[0]; p.Name() != "cpu" {
t.Fatalf("unexpected name: %s", p.Name())
} else if p.Fields()["value"] != int64(100) {
t.Fatalf("unexpected 'value' field: %d", p.Fields()["value"])
} else if p.Tags()["host"] != "server01" {
t.Fatalf("unexpected 'host' tag: %s", p.Tags()["host"])
} else if p.Time().UnixNano() != now.UnixNano() {
t.Fatalf("unexpected time: %s", p.Time())
}
}