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// _ _
// __ _____ __ ___ ___ __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
// \ V V / __/ (_| |\ V /| | (_| | || __/
// \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
// Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
// CONTACT: [email protected]
//
package replica
import (
"fmt"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/weaviate/weaviate/entities/models"
"github.com/weaviate/weaviate/entities/replication"
)
func Test_ValidateConfig(t *testing.T) {
tests := []struct {
name string
initialconfig *models.ReplicationConfig
resultConfig *models.ReplicationConfig
globalConfig replication.GlobalConfig
expectedErr error
}{
{
name: "config not provided",
initialconfig: nil,
resultConfig: &models.ReplicationConfig{Factor: 1},
globalConfig: replication.GlobalConfig{MinimumFactor: 1},
},
{
name: "config not provided - global minimum is 2",
initialconfig: nil,
resultConfig: &models.ReplicationConfig{Factor: 2},
globalConfig: replication.GlobalConfig{MinimumFactor: 2},
},
{
name: "config provided, factor not provided",
initialconfig: &models.ReplicationConfig{},
resultConfig: &models.ReplicationConfig{Factor: 1},
globalConfig: replication.GlobalConfig{MinimumFactor: 1},
},
{
name: "config provided, factor < 0",
initialconfig: &models.ReplicationConfig{Factor: -1},
resultConfig: &models.ReplicationConfig{Factor: 1},
globalConfig: replication.GlobalConfig{MinimumFactor: 1},
},
{
name: "config provided, valid factor",
initialconfig: &models.ReplicationConfig{Factor: 7},
resultConfig: &models.ReplicationConfig{Factor: 7},
},
{
name: "explicitly trying to bypass the minimum leads to error",
initialconfig: &models.ReplicationConfig{Factor: 1},
resultConfig: &models.ReplicationConfig{Factor: 1},
globalConfig: replication.GlobalConfig{MinimumFactor: 2},
expectedErr: fmt.Errorf("invalid replication factor: setup requires a minimum replication factor of 2: got 1"),
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
class := &models.Class{
ReplicationConfig: test.initialconfig,
}
err := ValidateConfig(class, test.globalConfig)
if test.expectedErr != nil {
assert.EqualError(t, test.expectedErr, err.Error())
} else {
assert.Nil(t, err)
assert.EqualValues(t, test.resultConfig, class.ReplicationConfig)
}
})
}
}
func Test_ValidateConfigUpdate(t *testing.T) {
tests := []struct {
name string
initial *models.ReplicationConfig
update *models.ReplicationConfig
expectedError error
}{
{
name: "attempting to increase replicas beyond cluster size",
initial: &models.ReplicationConfig{Factor: 3},
update: &models.ReplicationConfig{Factor: 4},
expectedError: fmt.Errorf(
"cannot scale to 4 replicas, cluster has only 3 nodes"),
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
err := ValidateConfigUpdate(
&models.Class{ReplicationConfig: test.initial},
&models.Class{ReplicationConfig: test.update},
&fakeNodeCounter{3})
if test.expectedError == nil {
assert.Nil(t, err)
} else {
require.NotNil(t, err, "update validation must error")
assert.Equal(t, test.expectedError.Error(), err.Error())
}
})
}
}
type fakeNodeCounter struct{ count int }
func (f *fakeNodeCounter) NodeCount() int {
return f.count
}
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