tests/e2e: add test cases related to HashKV

Signed-off-by: Wei Fu <fuweid89@gmail.com>

tests/e2e/hashkv_test.go

@@ -0,0 +1,236 @@
+// Copyright 2024 The etcd Authors
+//
+// 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.
+
+//go:build !cluster_proxy
+
+package e2e
+
+import (
+	"context"
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"go.etcd.io/etcd/client/pkg/v3/fileutil"
+	clientv3 "go.etcd.io/etcd/client/v3"
+	"go.etcd.io/etcd/tests/v3/framework/config"
+	"go.etcd.io/etcd/tests/v3/framework/e2e"
+)
+
+func TestVerifyHashKVAfterCompact(t *testing.T) {
+	scenarios := []struct {
+		clusterVersion e2e.ClusterVersion
+		keys           []string // used for data generators
+	}{
+		{
+			clusterVersion: e2e.CurrentVersion,
+			keys:           []string{"key0"},
+		},
+		{
+			clusterVersion: e2e.CurrentVersion,
+			keys:           []string{"key0", "key1"},
+		},
+		{
+			clusterVersion: e2e.QuorumLastVersion,
+			keys:           []string{"key0"},
+		},
+		{
+			clusterVersion: e2e.QuorumLastVersion,
+			keys:           []string{"key0", "key1"},
+		},
+	}
+
+	for _, compactedOnTombstoneRev := range []bool{false, true} {
+		for _, scenario := range scenarios {
+			t.Run(fmt.Sprintf("compactedOnTombstone=%v - %s - Keys=%v", compactedOnTombstoneRev, scenario.clusterVersion, scenario.keys), func(t *testing.T) {
+				e2e.BeforeTest(t)
+
+				if scenario.clusterVersion != e2e.CurrentVersion {
+					if !fileutil.Exist(e2e.BinPath.EtcdLastRelease) {
+						t.Skipf("%q does not exist", e2e.BinPath.EtcdLastRelease)
+					}
+				}
+
+				ctx := context.Background()
+
+				cfg := e2e.NewConfigClientTLS()
+				clus, err := e2e.NewEtcdProcessCluster(ctx, t,
+					e2e.WithConfig(cfg),
+					e2e.WithClusterSize(3),
+					e2e.WithVersion(scenario.clusterVersion))
+				require.NoError(t, err)
+
+				t.Cleanup(func() { clus.Close() })
+
+				tombstoneRevs, lastestRev := populateDataForHashKV(t, clus, cfg.Client, scenario.keys)
+
+				compactedOnRev := tombstoneRevs[0]
+
+				// If compaction revision is not tombstone, select revision after 3 writes from first tombstone.
+				// And ensure it's not the following tombstone.
+				const afterWriters = int64(3)
+				if !compactedOnTombstoneRev {
+					compactedOnRev = (tombstoneRevs[0] + tombstoneRevs[1]) / 2
+					require.Greater(t, tombstoneRevs[1], compactedOnRev)
+				}
+
+				cli, err := e2e.NewEtcdctl(cfg.Client, clus.EndpointsGRPC())
+				require.NoError(t, err)
+
+				t.Logf("COMPACT on rev=%d", compactedOnRev)
+				_, err = cli.Compact(ctx, compactedOnRev, config.CompactOption{Physical: true})
+				require.NoError(t, err)
+
+				for rev := compactedOnRev; rev <= lastestRev; rev++ {
+					verifyConsistentHashKVAcrossAllMembers(t, cli, rev)
+				}
+			})
+		}
+	}
+}
+
+func TestVerifyHashKVAfterTwoCompactionsOnTombstone_MixVersions(t *testing.T) {
+	e2e.BeforeTest(t)
+
+	if !fileutil.Exist(e2e.BinPath.EtcdLastRelease) {
+		t.Skipf("%q does not exist", e2e.BinPath.EtcdLastRelease)
+	}
+
+	ctx := context.Background()
+
+	cfg := e2e.NewConfigClientTLS()
+	clus, err := e2e.NewEtcdProcessCluster(ctx, t,
+		e2e.WithConfig(cfg),
+		e2e.WithClusterSize(3),
+		e2e.WithVersion(e2e.QuorumLastVersion))
+	require.NoError(t, err)
+	t.Cleanup(func() { clus.Close() })
+
+	tombstoneRevs, lastestRev := populateDataForHashKV(t, clus, cfg.Client, []string{"key0"})
+
+	cli, err := e2e.NewEtcdctl(cfg.Client, clus.EndpointsGRPC())
+	require.NoError(t, err)
+
+	firstCompactOnRev := tombstoneRevs[0]
+	t.Logf("COMPACT rev=%d", firstCompactOnRev)
+	_, err = cli.Compact(ctx, firstCompactOnRev, config.CompactOption{Physical: true})
+	require.NoError(t, err)
+
+	secondCompactOnRev := tombstoneRevs[1]
+	t.Logf("COMPACT rev=%d", secondCompactOnRev)
+	_, err = cli.Compact(ctx, secondCompactOnRev, config.CompactOption{Physical: true})
+	require.NoError(t, err)
+
+	for rev := secondCompactOnRev; rev <= lastestRev; rev++ {
+		verifyConsistentHashKVAcrossAllMembers(t, cli, rev)
+	}
+}
+
+func TestVerifyHashKVAfterCompactionOnLastTombstone_MixVersions(t *testing.T) {
+	e2e.BeforeTest(t)
+
+	if !fileutil.Exist(e2e.BinPath.EtcdLastRelease) {
+		t.Skipf("%q does not exist", e2e.BinPath.EtcdLastRelease)
+	}
+
+	for _, keys := range [][]string{
+		[]string{"key0"},
+		[]string{"key0", "key1"},
+	} {
+		t.Run(fmt.Sprintf("#%v", keys), func(t *testing.T) {
+			ctx := context.Background()
+
+			cfg := e2e.NewConfigClientTLS()
+			clus, err := e2e.NewEtcdProcessCluster(ctx, t,
+				e2e.WithConfig(cfg),
+				e2e.WithClusterSize(3),
+				e2e.WithVersion(e2e.QuorumLastVersion))
+			require.NoError(t, err)
+			t.Cleanup(func() { clus.Close() })
+
+			tombstoneRevs, lastestRev := populateDataForHashKV(t, clus, cfg.Client, keys)
+
+			cli, err := e2e.NewEtcdctl(cfg.Client, clus.EndpointsGRPC())
+			require.NoError(t, err)
+
+			compactOnRev := tombstoneRevs[len(tombstoneRevs)-1]
+			t.Logf("COMPACT rev=%d", compactOnRev)
+			_, err = cli.Compact(ctx, compactOnRev, config.CompactOption{Physical: true})
+			require.NoError(t, err)
+
+			for rev := compactOnRev; rev <= lastestRev; rev++ {
+				verifyConsistentHashKVAcrossAllMembers(t, cli, rev)
+			}
+
+		})
+	}
+}
+
+// populateDataForHashKV populates some sample data, and return a slice of tombstone
+// revisions and the latest revision
+func populateDataForHashKV(t *testing.T, clus *e2e.EtcdProcessCluster, clientCfg e2e.ClientConfig, keys []string) ([]int64, int64) {
+	c := newClient(t, clus.EndpointsGRPC(), clientCfg)
+	defer c.Close()
+
+	ctx := context.Background()
+	totalOperations := 40
+
+	var (
+		tombStoneRevs []int64
+		latestRev     int64
+	)
+
+	deleteStep := 10 // submit a delete operation on every 10 operations
+	for i := 1; i <= totalOperations; i++ {
+		if i%deleteStep == 0 {
+			t.Logf("Deleting key=%s", keys[0]) // Only delete the first key for simplicity
+			resp, derr := c.Delete(ctx, keys[0])
+			require.NoError(t, derr)
+			latestRev = resp.Header.Revision
+			tombStoneRevs = append(tombStoneRevs, resp.Header.Revision)
+			continue
+		}
+
+		value := fmt.Sprintf("%d", i)
+		var ops []clientv3.Op
+		for _, key := range keys {
+			ops = append(ops, clientv3.OpPut(key, value))
+		}
+
+		t.Logf("Writing keys: %v, value: %s", keys, value)
+		resp, terr := c.Txn(ctx).Then(ops...).Commit()
+		require.NoError(t, terr)
+		require.True(t, resp.Succeeded)
+		require.Len(t, resp.Responses, len(ops))
+		latestRev = resp.Header.Revision
+	}
+	return tombStoneRevs, latestRev
+}
+
+func verifyConsistentHashKVAcrossAllMembers(t *testing.T, cli *e2e.EtcdctlV3, hashKVOnRev int64) {
+	ctx := context.Background()
+
+	t.Logf("HashKV on rev=%d", hashKVOnRev)
+	resp, err := cli.HashKV(ctx, hashKVOnRev)
+	require.NoError(t, err)
+
+	require.Greater(t, len(resp), 1)
+	require.True(t, resp[0].Hash != 0)
+	t.Logf("One Hash value is %d", resp[0].Hash)
+
+	for i := 1; i < len(resp); i++ {
+		require.Equal(t, resp[0].Hash, resp[i].Hash)
+	}
+}