blob: a5659e4f6d75356acd496b8d6e7b141278f8a8fd [file] [log] [blame]
/*
* Copyright 2019-present Open Networking Foundation
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package db
import (
"context"
"os"
"strconv"
"testing"
"time"
mocks "github.com/opencord/voltha-lib-go/v4/pkg/mocks/etcd"
"github.com/phayes/freeport"
"github.com/stretchr/testify/assert"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
const (
embedEtcdServerHost = "localhost"
defaultTimeout = 1 * time.Second
defaultPathPrefix = "Prefix"
)
var (
embedEtcdServerPort int
dummyEtcdServerPort int
)
func TestMain(m *testing.M) {
ctx := context.Background()
var err error
embedEtcdServerPort, err = freeport.GetFreePort()
if err != nil {
logger.Fatal(ctx, err)
}
dummyEtcdServerPort, err = freeport.GetFreePort()
if err != nil {
logger.Fatal(ctx, err)
}
peerPort, err := freeport.GetFreePort()
if err != nil {
logger.Fatal(ctx, err)
}
etcdServer := mocks.StartEtcdServer(ctx, mocks.MKConfig(ctx, "voltha.db.test", embedEtcdServerPort, peerPort, "voltha.lib.db", "error"))
res := m.Run()
etcdServer.Stop(ctx)
os.Exit(res)
}
func provisionBackendWithEmbeddedEtcdServer(t *testing.T) *Backend {
ctx := context.Background()
backend := NewBackend(ctx, "etcd", embedEtcdServerHost+":"+strconv.Itoa(embedEtcdServerPort), defaultTimeout, defaultPathPrefix)
assert.NotNil(t, backend)
assert.NotNil(t, backend.Client)
return backend
}
func provisionBackendWithDummyEtcdServer(t *testing.T) *Backend {
backend := NewBackend(context.Background(), "etcd", embedEtcdServerHost+":"+strconv.Itoa(dummyEtcdServerPort), defaultTimeout, defaultPathPrefix)
assert.NotNil(t, backend)
assert.NotNil(t, backend.Client)
return backend
}
// Create instance using Etcd Kvstore
func TestNewBackend_EtcdKvStore(t *testing.T) {
address := embedEtcdServerHost + ":" + strconv.Itoa(embedEtcdServerPort)
backend := NewBackend(context.Background(), "etcd", address, defaultTimeout, defaultPathPrefix)
// Verify all attributes of backend have got set correctly
assert.NotNil(t, backend)
assert.NotNil(t, backend.Client)
assert.Equal(t, backend.StoreType, "etcd")
assert.Equal(t, backend.Address, address)
assert.Equal(t, backend.Timeout, defaultTimeout)
assert.Equal(t, backend.PathPrefix, defaultPathPrefix)
assert.Equal(t, backend.alive, false) // backend is not alive at start
assert.Nil(t, backend.liveness) // no liveness channel is created at start
assert.Equal(t, backend.LivenessChannelInterval, DefaultLivenessChannelInterval)
}
// Create instance using Invalid Kvstore; instance creation should fail
func TestNewBackend_InvalidKvstore(t *testing.T) {
backend := NewBackend(context.Background(), "unknown", embedEtcdServerHost+":"+strconv.Itoa(embedEtcdServerPort), defaultTimeout, defaultPathPrefix)
assert.NotNil(t, backend)
assert.Nil(t, backend.Client)
}
func TestMakePath(t *testing.T) {
backend := provisionBackendWithEmbeddedEtcdServer(t)
path := backend.makePath(context.Background(), "Suffix")
assert.Equal(t, defaultPathPrefix+"/Suffix", path)
}
// Liveness Check against Embedded Etcd Server should return alive state
func TestPerformLivenessCheck_EmbeddedEtcdServer(t *testing.T) {
backend := provisionBackendWithEmbeddedEtcdServer(t)
ctx, cancel := context.WithTimeout(context.Background(), defaultTimeout)
defer cancel()
alive := backend.PerformLivenessCheck(ctx)
assert.True(t, alive)
}
// Liveness Check against Dummy Etcd Server should return not-alive state
func TestPerformLivenessCheck_DummyEtcdServer(t *testing.T) {
backend := provisionBackendWithDummyEtcdServer(t)
ctx, cancel := context.WithTimeout(context.Background(), defaultTimeout)
defer cancel()
alive := backend.PerformLivenessCheck(ctx)
assert.False(t, alive)
}
// Enabling Liveness Channel before First Liveness Check
func TestEnableLivenessChannel_EmbeddedEtcdServer_BeforeLivenessCheck(t *testing.T) {
backend := provisionBackendWithEmbeddedEtcdServer(t)
alive := backend.EnableLivenessChannel(context.Background())
assert.NotNil(t, alive)
assert.Equal(t, 1, len(alive))
assert.Equal(t, false, <-alive)
assert.NotNil(t, backend.liveness)
}
// Enabling Liveness Channel after First Liveness Check
func TestEnableLivenessChannel_EmbeddedEtcdServer_AfterLivenessCheck(t *testing.T) {
backend := provisionBackendWithEmbeddedEtcdServer(t)
ctx, cancel := context.WithTimeout(context.Background(), defaultTimeout)
defer cancel()
backend.PerformLivenessCheck(ctx)
alive := backend.EnableLivenessChannel(ctx)
assert.NotNil(t, alive)
assert.Equal(t, 1, len(alive))
assert.Equal(t, true, <-alive)
assert.NotNil(t, backend.liveness)
}
// Update Liveness with alive status change
func TestUpdateLiveness_AliveStatusChange(t *testing.T) {
backend := provisionBackendWithEmbeddedEtcdServer(t)
// Enable Liveness Channel and verify initial state is not-alive
aliveState := backend.EnableLivenessChannel(context.Background())
assert.NotNil(t, aliveState)
assert.Equal(t, 1, len(backend.liveness))
assert.Equal(t, false, <-backend.liveness)
lastUpdateTime := backend.lastLivenessTime
// Update with changed alive state. Verify alive state push & liveness time update
backend.updateLiveness(context.Background(), true)
assert.Equal(t, 1, len(backend.liveness))
assert.Equal(t, true, <-backend.liveness)
assert.NotEqual(t, lastUpdateTime, backend.lastLivenessTime)
}
// Update Liveness with same alive status reporting
func TestUpdateLiveness_AliveStatusUnchanged(t *testing.T) {
backend := provisionBackendWithEmbeddedEtcdServer(t)
// Enable Liveness Channel and verify initial state is not-alive
aliveState := backend.EnableLivenessChannel(context.Background())
assert.NotNil(t, aliveState)
assert.Equal(t, false, <-backend.liveness)
lastUpdateTime := backend.lastLivenessTime
// Update with same alive state. Verify no further alive state push
backend.updateLiveness(context.Background(), false)
assert.Equal(t, 0, len(backend.liveness))
assert.Equal(t, lastUpdateTime, backend.lastLivenessTime)
// Now set lastUpdateTime 10 min back and push again
tenMinDuration, _ := time.ParseDuration("10m")
backend.lastLivenessTime = time.Now().Add(-tenMinDuration)
lastUpdateTime = backend.lastLivenessTime
backend.updateLiveness(context.Background(), false)
assert.Equal(t, 1, len(backend.liveness))
assert.Equal(t, false, <-backend.liveness)
assert.NotEqual(t, lastUpdateTime, backend.lastLivenessTime)
}
func TestIsErrorIndicatingAliveKvstore(t *testing.T) {
tests := []struct {
name string
arg error
want bool
}{
{"No Error", nil, true},
{"Request Canceled", context.Canceled, true},
{"Request Timeout", context.DeadlineExceeded, false},
{"Etcd Error - InvalidArgument", status.New(codes.InvalidArgument, "").Err(), true},
{"Etcd Error - DeadlineExceeded", status.New(codes.DeadlineExceeded, "").Err(), false},
{"Etcd Error - Unavailable", status.New(codes.Unavailable, "").Err(), false},
{"Etcd Error - DataLoss", status.New(codes.DataLoss, "").Err(), false},
{"Etcd Error - NotFound", status.New(codes.NotFound, "").Err(), true},
{"Etcd Error - PermissionDenied ", status.New(codes.PermissionDenied, "").Err(), true},
{"Etcd Error - FailedPrecondition ", status.New(codes.FailedPrecondition, "").Err(), true},
}
backend := provisionBackendWithEmbeddedEtcdServer(t)
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if backend.isErrorIndicatingAliveKvstore(context.Background(), tt.arg) != tt.want {
t.Errorf("isErrorIndicatingAliveKvstore failed for %s: expected %t but got %t", tt.name, tt.want, !tt.want)
}
})
}
}
func TestPut_EmbeddedEtcdServer(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
backend := provisionBackendWithEmbeddedEtcdServer(t)
err := backend.Put(ctx, "key1", []uint8("value1"))
assert.Nil(t, err)
// Assert alive state has become true
assert.True(t, backend.alive)
// Assert that kvstore has this value stored
kvpair, err := backend.Get(ctx, "key1")
assert.Nil(t, err)
assert.NotNil(t, kvpair)
assert.Equal(t, defaultPathPrefix+"/key1", kvpair.Key)
assert.Equal(t, []uint8("value1"), kvpair.Value)
// Assert that Put overrides the Value
err = backend.Put(ctx, "key1", []uint8("value11"))
assert.Nil(t, err)
kvpair, err = backend.Get(ctx, "key1")
assert.Nil(t, err)
assert.NotNil(t, kvpair)
assert.Equal(t, defaultPathPrefix+"/key1", kvpair.Key)
assert.Equal(t, []uint8("value11"), kvpair.Value)
}
// Put operation should fail against Dummy Non-existent Etcd Server
func TestPut_DummyEtcdServer(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
backend := provisionBackendWithDummyEtcdServer(t)
err := backend.Put(ctx, "key1", []uint8("value1"))
assert.NotNil(t, err)
// Assert alive state is still false
assert.False(t, backend.alive)
}
// Test Get for existing and non-existing key
func TestGet_EmbeddedEtcdServer(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
backend := provisionBackendWithEmbeddedEtcdServer(t)
err := backend.Put(ctx, "key2", []uint8("value2"))
assert.Nil(t, err)
// Assert alive state has become true
assert.True(t, backend.alive)
// Assert that kvstore has this key stored
kvpair, err := backend.Get(ctx, "key2")
assert.NotNil(t, kvpair)
assert.Nil(t, err)
assert.Equal(t, defaultPathPrefix+"/key2", kvpair.Key)
assert.Equal(t, []uint8("value2"), kvpair.Value)
// Assert that Get works fine for absent key3
kvpair, err = backend.Get(ctx, "key3")
assert.Nil(t, err) // no error as lookup is successful
assert.Nil(t, kvpair)
}
// Get operation should fail against Dummy Non-existent Etcd Server
func TestGet_DummyEtcdServer(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
backend := provisionBackendWithDummyEtcdServer(t)
kvpair, err := backend.Get(ctx, "key2")
assert.NotNil(t, err)
assert.Nil(t, kvpair)
// Assert alive state is still false
assert.False(t, backend.alive)
}
// Test Delete for existing and non-existing key
func TestDelete_EmbeddedEtcdServer(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
backend := provisionBackendWithEmbeddedEtcdServer(t)
err := backend.Put(ctx, "key3", []uint8("value3"))
assert.Nil(t, err)
// Assert alive state has become true
assert.True(t, backend.alive)
// Assert that kvstore has this key stored
kvpair, err := backend.Get(ctx, "key3")
assert.Nil(t, err)
assert.NotNil(t, kvpair)
// Delete and Assert that key has been removed
err = backend.Delete(ctx, "key3")
assert.Nil(t, err)
kvpair, err = backend.Get(ctx, "key3")
assert.Nil(t, err)
assert.Nil(t, kvpair)
// Assert that Delete silently ignores absent key3
err = backend.Delete(ctx, "key3")
assert.Nil(t, err)
}
// Delete operation should fail against Dummy Non-existent Etcd Server
func TestDelete_DummyEtcdServer(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
backend := provisionBackendWithDummyEtcdServer(t)
err := backend.Delete(ctx, "key3")
assert.NotNil(t, err)
// Assert alive state is still false
assert.False(t, backend.alive)
}
// Test List for series of values under a key path
func TestList_EmbeddedEtcdServer(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
key41 := "key4/subkey1"
key42 := "key4/subkey2"
backend := provisionBackendWithEmbeddedEtcdServer(t)
err := backend.Put(ctx, key41, []uint8("value4-1"))
assert.Nil(t, err)
err = backend.Put(ctx, key42, []uint8("value4-2"))
assert.Nil(t, err)
// Assert alive state has become true
assert.True(t, backend.alive)
// Assert that Get does not retrieve these Subkeys
kvpair, err := backend.Get(ctx, "key4")
assert.Nil(t, kvpair)
assert.Nil(t, err)
// Assert that List operation retrieves these Child Keys
kvmap, err := backend.List(ctx, "key4")
assert.NotNil(t, kvmap)
assert.Nil(t, err)
assert.Equal(t, 2, len(kvmap))
fullkey41 := defaultPathPrefix + "/" + key41
fullkey42 := defaultPathPrefix + "/" + key42
assert.Equal(t, fullkey41, kvmap[fullkey41].Key)
assert.Equal(t, []uint8("value4-1"), kvmap[fullkey41].Value)
assert.Equal(t, fullkey42, kvmap[fullkey42].Key)
assert.Equal(t, []uint8("value4-2"), kvmap[fullkey42].Value)
}
// List operation should fail against Dummy Non-existent Etcd Server
func TestList_DummyEtcdServer(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
backend := provisionBackendWithDummyEtcdServer(t)
kvmap, err := backend.List(ctx, "key4")
assert.Nil(t, kvmap)
assert.NotNil(t, err)
// Assert alive state is still false
assert.False(t, backend.alive)
}
// Test Create and Delete Watch for Embedded Etcd Server
func TestCreateWatch_EmbeddedEtcdServer(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
backend := provisionBackendWithEmbeddedEtcdServer(t)
eventChan := backend.CreateWatch(ctx, "key5", false)
assert.NotNil(t, eventChan)
assert.Equal(t, 0, len(eventChan))
// Assert this method does not change alive state
assert.False(t, backend.alive)
// Put a value for watched key and event should appear
err := backend.Put(ctx, "key5", []uint8("value5"))
assert.Nil(t, err)
time.Sleep(time.Millisecond * 100)
assert.Equal(t, 1, len(eventChan))
backend.DeleteWatch(context.Background(), "key5", eventChan)
}
// Test Create and Delete Watch with prefix for Embedded Etcd Server
func TestCreateWatch_With_Prefix_EmbeddedEtcdServer(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
backend := provisionBackendWithEmbeddedEtcdServer(t)
eventChan := backend.CreateWatch(ctx, "key6", true)
assert.NotNil(t, eventChan)
assert.Equal(t, 0, len(eventChan))
// Assert this method does not change alive state
assert.False(t, backend.alive)
// Put a value for watched key and event should appear
err := backend.Put(ctx, "key6/is-a-prefix", []uint8("value5"))
assert.Nil(t, err)
time.Sleep(time.Millisecond * 100)
assert.Equal(t, 1, len(eventChan))
backend.DeleteWatch(context.Background(), "key6", eventChan)
}