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// _ _
// __ _____ __ ___ ___ __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
// \ V V / __/ (_| |\ V /| | (_| | || __/
// \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
// Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
// CONTACT: [email protected]
//
package schema
import (
"context"
"encoding/json"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/weaviate/weaviate/entities/backup"
"github.com/weaviate/weaviate/entities/models"
"github.com/weaviate/weaviate/usecases/sharding"
)
func TestRestoreClass_WithCircularRefs(t *testing.T) {
// When restoring a class, there could be circular refs between the classes,
// thus any validation that checks if linked classes exist would fail on the
// first class to import. Since we have no control over the order of imports
// when restoring, we need to relax this validation.
classes := []*models.Class{
{
Class: "Class_A",
Properties: []*models.Property{{
Name: "to_Class_B",
DataType: []string{"Class_B"},
}, {
Name: "to_Class_C",
DataType: []string{"Class_C"},
}},
},
{
Class: "Class_B",
Properties: []*models.Property{{
Name: "to_Class_A",
DataType: []string{"Class_A"},
}, {
Name: "to_Class_C",
DataType: []string{"Class_C"},
}},
},
{
Class: "Class_C",
Properties: []*models.Property{{
Name: "to_Class_A",
DataType: []string{"Class_A"},
}, {
Name: "to_Class_B",
DataType: []string{"Class_B"},
}},
},
}
mgr := newSchemaManager()
for _, classRaw := range classes {
schemaBytes, err := json.Marshal(classRaw)
require.Nil(t, err)
// for this particular test the sharding state does not matter, so we can
// initiate any new sharding state
shardingConfig, err := sharding.ParseConfig(nil, 1)
require.Nil(t, err)
nodes := fakeNodes{[]string{"node1", "node2"}}
shardingState, err := sharding.InitState(classRaw.Class, shardingConfig, nodes, 1, false)
require.Nil(t, err)
shardingBytes, err := shardingState.JSON()
require.Nil(t, err)
descriptor := backup.ClassDescriptor{Name: classRaw.Class, Schema: schemaBytes, ShardingState: shardingBytes}
err = mgr.RestoreClass(context.Background(), &descriptor, map[string]string{})
assert.Nil(t, err, "class passes validation")
}
}
func TestRestoreClass_WithNodeMapping(t *testing.T) {
classes := []*models.Class{{Class: "Class_A"}}
mgr := newSchemaManager()
for _, classRaw := range classes {
schemaBytes, err := json.Marshal(classRaw)
require.Nil(t, err)
shardingConfig, err := sharding.ParseConfig(nil, 2)
require.Nil(t, err)
nodes := fakeNodes{[]string{"node1", "node2"}}
shardingState, err := sharding.InitState(classRaw.Class, shardingConfig, nodes, 2, false)
require.Nil(t, err)
shardingBytes, err := shardingState.JSON()
require.Nil(t, err)
descriptor := backup.ClassDescriptor{Name: classRaw.Class, Schema: schemaBytes, ShardingState: shardingBytes}
err = mgr.RestoreClass(context.Background(), &descriptor, map[string]string{"node1": "new-node1"})
assert.NoError(t, err)
// Ensure that sharding state has been updated with the new node names
for _, shard := range mgr.ShardingState {
for _, v := range shard.Physical {
for _, node := range v.BelongsToNodes {
assert.Contains(t, []string{"new-node1", "node2"}, node)
}
}
}
}
}
type fakeNodes struct {
nodes []string
}
func (f fakeNodes) Candidates() []string {
return f.nodes
}
func (f fakeNodes) LocalName() string {
return f.nodes[0]
}
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