Golang Data.CreateDatabase方法代码示例

// Ensure that a retention policy can be updated.
func TestData_UpdateRetentionPolicy(t *testing.T) {
	var data meta.Data
	if err := data.CreateDatabase("db0"); err != nil {
		t.Fatal(err)
	} else if err = data.CreateRetentionPolicy("db0", &meta.RetentionPolicyInfo{Name: "rp0"}); err != nil {
		t.Fatal(err)
	}

	// Update the policy.
	var rpu meta.RetentionPolicyUpdate
	rpu.SetName("rp1")
	rpu.SetDuration(10 * time.Hour)
	rpu.SetReplicaN(3)
	if err := data.UpdateRetentionPolicy("db0", "rp0", &rpu); err != nil {
		t.Fatal(err)
	}

	// Verify the policy was changed.
	if rpi, _ := data.RetentionPolicy("db0", "rp1"); !reflect.DeepEqual(rpi, &meta.RetentionPolicyInfo{
		Name:               "rp1",
		Duration:           10 * time.Hour,
		ShardGroupDuration: 604800000000000,
		ReplicaN:           3,
	}) {
		t.Fatalf("unexpected policy: %#v", rpi)
	}
}

// Ensure a retention policy can be created.
func TestData_CreateRetentionPolicy(t *testing.T) {
	data := meta.Data{Nodes: []meta.NodeInfo{{ID: 1}, {ID: 2}}}
	if err := data.CreateDatabase("db0"); err != nil {
		t.Fatal(err)
	}

	// Create policy.
	if err := data.CreateRetentionPolicy("db0", &meta.RetentionPolicyInfo{
		Name:     "rp0",
		ReplicaN: 2,
		Duration: 4 * time.Hour,
	}); err != nil {
		t.Fatal(err)
	}

	// Verify policy exists.
	if !reflect.DeepEqual(data.Databases[0].RetentionPolicies, []meta.RetentionPolicyInfo{
		{
			Name:               "rp0",
			ReplicaN:           2,
			Duration:           4 * time.Hour,
			ShardGroupDuration: 1 * time.Hour,
		},
	}) {
		t.Fatalf("unexpected policies: %#v", data.Databases[0].RetentionPolicies)
	}
}

// Ensure that a shard group can be created on a database for a given timestamp.
func TestData_CreateShardGroup(t *testing.T) {
	var data meta.Data
	if err := data.CreateNode("node0"); err != nil {
		t.Fatal(err)
	} else if err = data.CreateNode("node1"); err != nil {
		t.Fatal(err)
	} else if err = data.CreateDatabase("db0"); err != nil {
		t.Fatal(err)
	} else if err = data.CreateRetentionPolicy("db0", &meta.RetentionPolicyInfo{Name: "rp0", ReplicaN: 2, Duration: 1 * time.Hour}); err != nil {
		t.Fatal(err)
	}

	// Create shard group.
	if err := data.CreateShardGroup("db0", "rp0", time.Date(2000, time.January, 1, 0, 0, 0, 0, time.UTC)); err != nil {
		t.Fatal(err)
	}

	// Verify the shard group was created.
	if sgi, _ := data.ShardGroupByTimestamp("db0", "rp0", time.Date(2000, time.January, 1, 0, 0, 0, 0, time.UTC)); !reflect.DeepEqual(sgi, &meta.ShardGroupInfo{
		ID:        1,
		StartTime: time.Date(2000, time.January, 1, 0, 0, 0, 0, time.UTC),
		EndTime:   time.Date(2000, time.January, 1, 1, 0, 0, 0, time.UTC),
		Shards: []meta.ShardInfo{
			{ID: 1, OwnerIDs: []uint64{1, 2}},
		},
	}) {
		t.Fatalf("unexpected shard group: %#v", sgi)
	} else if !sgi.Shards[0].OwnedBy(1) || !sgi.Shards[0].OwnedBy(2) || sgi.Shards[0].OwnedBy(3) {
		// Verify shard is correctly owned-by the node.
		t.Fatalf("new shard is not owned by correct node")
	}
}

// Ensure a database can be created.
func TestData_CreateDatabase(t *testing.T) {
	var data meta.Data
	if err := data.CreateDatabase("db0"); err != nil {
		t.Fatal(err)
	} else if !reflect.DeepEqual(data.Databases, []meta.DatabaseInfo{{Name: "db0"}}) {
		t.Fatalf("unexpected databases: %#v", data.Databases)
	}
}

// Ensure that creating an already existing database returns an error.
func TestData_CreateDatabase_ErrDatabaseExists(t *testing.T) {
	var data meta.Data
	if err := data.CreateDatabase("db0"); err != nil {
		t.Fatal(err)
	}
	if err := data.CreateDatabase("db0"); err != meta.ErrDatabaseExists {
		t.Fatalf("unexpected error: %s", err)
	}
}

// Ensure an error is returned when deleting a non-existent policy.
func TestData_DropRetentionPolicy_ErrRetentionPolicyNotFound(t *testing.T) {
	var data meta.Data
	if err := data.CreateDatabase("db0"); err != nil {
		t.Fatal(err)
	}
	if err := data.DropRetentionPolicy("db0", "rp0"); err != meta.ErrRetentionPolicyNotFound {
		t.Fatal(err)
	}
}

// Ensure that creating an already existing policy returns an error.
func TestData_CreateRetentionPolicy_ErrRetentionPolicyExists(t *testing.T) {
	var data meta.Data
	if err := data.CreateDatabase("db0"); err != nil {
		t.Fatal(err)
	} else if err = data.CreateRetentionPolicy("db0", &meta.RetentionPolicyInfo{Name: "rp0"}); err != nil {
		t.Fatal(err)
	}
	if err := data.CreateRetentionPolicy("db0", &meta.RetentionPolicyInfo{Name: "rp0"}); err != meta.ErrRetentionPolicyExists {
		t.Fatalf("unexpected error: %s", err)
	}
}

// Ensure a continuous query can be created.
func TestData_CreateContinuousQuery(t *testing.T) {
	var data meta.Data
	if err := data.CreateDatabase("db0"); err != nil {
		t.Fatal(err)
	} else if err := data.CreateContinuousQuery("db0", "cq0", "SELECT count() FROM foo"); err != nil {
		t.Fatal(err)
	} else if !reflect.DeepEqual(data.Databases[0].ContinuousQueries, []meta.ContinuousQueryInfo{
		{Name: "cq0", Query: "SELECT count() FROM foo"},
	}) {
		t.Fatalf("unexpected queries: %#v", data.Databases[0].ContinuousQueries)
	}
}

// Ensure a database can be removed.
func TestData_DropDatabase(t *testing.T) {
	var data meta.Data
	for i := 0; i < 3; i++ {
		if err := data.CreateDatabase(fmt.Sprintf("db%d", i)); err != nil {
			t.Fatal(err)
		}
	}

	if err := data.DropDatabase("db1"); err != nil {
		t.Fatal(err)
	} else if !reflect.DeepEqual(data.Databases, []meta.DatabaseInfo{{Name: "db0"}, {Name: "db2"}}) {
		t.Fatalf("unexpected databases: %#v", data.Databases)
	}
}

// Ensure a retention policy can be removed.
func TestData_DropRetentionPolicy(t *testing.T) {
	var data meta.Data
	if err := data.CreateDatabase("db0"); err != nil {
		t.Fatal(err)
	} else if err = data.CreateRetentionPolicy("db0", &meta.RetentionPolicyInfo{Name: "rp0"}); err != nil {
		t.Fatal(err)
	}

	if err := data.DropRetentionPolicy("db0", "rp0"); err != nil {
		t.Fatal(err)
	} else if len(data.Databases[0].RetentionPolicies) != 0 {
		t.Fatalf("unexpected policies: %#v", data.Databases[0].RetentionPolicies)
	}
}

// Ensure a shard group can be removed by ID.
func TestData_DeleteShardGroup(t *testing.T) {
	var data meta.Data
	if err := data.CreateNode("node0"); err != nil {
		t.Fatal(err)
	} else if err := data.CreateDatabase("db0"); err != nil {
		t.Fatal(err)
	} else if err = data.CreateRetentionPolicy("db0", &meta.RetentionPolicyInfo{Name: "rp0", ReplicaN: 1}); err != nil {
		t.Fatal(err)
	} else if err := data.CreateShardGroup("db0", "rp0", time.Date(2000, time.January, 1, 0, 0, 0, 0, time.UTC)); err != nil {
		t.Fatal(err)
	}

	if err := data.DeleteShardGroup("db0", "rp0", 1); err != nil {
		t.Fatal(err)
	}
	if sg := data.Databases[0].RetentionPolicies[0].ShardGroups[0]; !sg.Deleted() {
		t.Fatalf("shard group not correctly flagged as deleted")
	}
}

// Ensure that a shard group is correctly detected as expired.
func TestData_ShardGroupExpiredDeleted(t *testing.T) {
	var data meta.Data
	if err := data.CreateNode("node0"); err != nil {
		t.Fatal(err)
	} else if err = data.CreateNode("node1"); err != nil {
		t.Fatal(err)
	} else if err = data.CreateDatabase("db0"); err != nil {
		t.Fatal(err)
	} else if err = data.CreateRetentionPolicy("db0", &meta.RetentionPolicyInfo{Name: "rp0", ReplicaN: 2, Duration: 1 * time.Hour}); err != nil {
		t.Fatal(err)
	}

	// Create shard groups.
	if err := data.CreateShardGroup("db0", "rp0", time.Date(2000, time.January, 1, 0, 0, 0, 0, time.UTC)); err != nil {
		t.Fatal(err)
	}
	if err := data.CreateShardGroup("db0", "rp0", time.Date(2001, time.January, 1, 0, 0, 0, 0, time.UTC)); err != nil {
		t.Fatal(err)
	}

	// Check expiration.
	rp, _ := data.RetentionPolicy("db0", "rp0")
	groups := rp.ExpiredShardGroups(time.Date(2001, time.January, 1, 0, 0, 0, 0, time.UTC))
	if len(groups) != 1 {
		t.Fatalf("wrong number of expired shard groups returned, got %d, exp 1", len(groups))
	}
	if groups[0].StartTime != time.Date(2000, time.January, 1, 0, 0, 0, 0, time.UTC) {
		t.Fatal("wrong shard group marked as expired")
	}

	// Check deletion.
	if err := data.DeleteShardGroup("db0", "rp0", groups[0].ID); err != nil {
		t.Fatal(err)
	}
	groups = rp.DeletedShardGroups()
	if len(groups) != 1 {
		t.Fatalf("wrong number of deleted shard groups returned, got %d, exp 1", len(groups))
	}
	if groups[0].StartTime != time.Date(2000, time.January, 1, 0, 0, 0, 0, time.UTC) {
		t.Fatal("wrong shard group marked as expired")
	}

}

// Ensure that a retention policy can be retrieved.
func TestData_RetentionPolicy(t *testing.T) {
	var data meta.Data
	if err := data.CreateDatabase("db0"); err != nil {
		t.Fatal(err)
	} else if err = data.CreateRetentionPolicy("db0", &meta.RetentionPolicyInfo{Name: "rp0"}); err != nil {
		t.Fatal(err)
	} else if err = data.CreateRetentionPolicy("db0", &meta.RetentionPolicyInfo{Name: "rp1"}); err != nil {
		t.Fatal(err)
	}

	if rpi, err := data.RetentionPolicy("db0", "rp0"); err != nil {
		t.Fatal(err)
	} else if !reflect.DeepEqual(rpi, &meta.RetentionPolicyInfo{
		Name:               "rp0",
		ShardGroupDuration: 604800000000000,
	}) {
		t.Fatalf("unexpected value: %#v", rpi)
	}
}

// Ensure that a default retention policy can be set.
func TestData_SetDefaultRetentionPolicy(t *testing.T) {
	var data meta.Data
	if err := data.CreateDatabase("db0"); err != nil {
		t.Fatal(err)
	} else if err = data.CreateRetentionPolicy("db0", &meta.RetentionPolicyInfo{Name: "rp0"}); err != nil {
		t.Fatal(err)
	}

	// Verify there is no default policy on the database initially.
	if name := data.Database("db0").DefaultRetentionPolicy; name != "" {
		t.Fatalf("unexpected initial default retention policy: %s", name)
	}

	// Set the default policy.
	if err := data.SetDefaultRetentionPolicy("db0", "rp0"); err != nil {
		t.Fatal(err)
	}

	// Verify the default policy is now set.
	if name := data.Database("db0").DefaultRetentionPolicy; name != "rp0" {
		t.Fatalf("unexpected default retention policy: %s", name)
	}
}

// Ensure that creating a database without a name returns an error.
func TestData_CreateDatabase_ErrNameRequired(t *testing.T) {
	var data meta.Data
	if err := data.CreateDatabase(""); err != meta.ErrDatabaseNameRequired {
		t.Fatalf("unexpected error: %s", err)
	}
}