зеркало из https://github.com/github/vitess-gh.git
137 строки
4.0 KiB
Go
137 строки
4.0 KiB
Go
/*
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Copyright 2019 The Vitess Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package main
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import (
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"context"
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"flag"
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"fmt"
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"os"
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"github.com/spf13/pflag"
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"vitess.io/vitess/go/exit"
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"vitess.io/vitess/go/vt/grpccommon"
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"vitess.io/vitess/go/vt/log"
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"vitess.io/vitess/go/vt/logutil"
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"vitess.io/vitess/go/vt/topo"
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"vitess.io/vitess/go/vt/topo/helpers"
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// Include deprecation warnings for soon-to-be-unsupported flag invocations.
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_flag "vitess.io/vitess/go/internal/flag"
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)
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var (
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fromImplementation = flag.String("from_implementation", "", "topology implementation to copy data from")
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fromServerAddress = flag.String("from_server", "", "topology server address to copy data from")
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fromRoot = flag.String("from_root", "", "topology server root to copy data from")
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toImplementation = flag.String("to_implementation", "", "topology implementation to copy data to")
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toServerAddress = flag.String("to_server", "", "topology server address to copy data to")
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toRoot = flag.String("to_root", "", "topology server root to copy data to")
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compare = flag.Bool("compare", false, "compares data between topologies")
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doKeyspaces = flag.Bool("do-keyspaces", false, "copies the keyspace information")
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doShards = flag.Bool("do-shards", false, "copies the shard information")
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doShardReplications = flag.Bool("do-shard-replications", false, "copies the shard replication information")
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doTablets = flag.Bool("do-tablets", false, "copies the tablet information")
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doRoutingRules = flag.Bool("do-routing-rules", false, "copies the routing rules")
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)
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func main() {
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defer exit.RecoverAll()
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defer logutil.Flush()
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fs := pflag.NewFlagSet("topo2topo", pflag.ExitOnError)
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grpccommon.RegisterFlags(fs)
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log.RegisterFlags(fs)
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logutil.RegisterFlags(fs)
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_flag.Parse(fs)
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args := _flag.Args()
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if len(args) != 0 {
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flag.Usage()
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log.Exitf("topo2topo doesn't take any parameter.")
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}
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fromTS, err := topo.OpenServer(*fromImplementation, *fromServerAddress, *fromRoot)
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if err != nil {
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log.Exitf("Cannot open 'from' topo %v: %v", *fromImplementation, err)
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}
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toTS, err := topo.OpenServer(*toImplementation, *toServerAddress, *toRoot)
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if err != nil {
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log.Exitf("Cannot open 'to' topo %v: %v", *toImplementation, err)
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}
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ctx := context.Background()
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if *compare {
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compareTopos(ctx, fromTS, toTS)
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return
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}
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copyTopos(ctx, fromTS, toTS)
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}
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func copyTopos(ctx context.Context, fromTS, toTS *topo.Server) {
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if *doKeyspaces {
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helpers.CopyKeyspaces(ctx, fromTS, toTS)
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}
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if *doShards {
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helpers.CopyShards(ctx, fromTS, toTS)
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}
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if *doShardReplications {
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helpers.CopyShardReplications(ctx, fromTS, toTS)
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}
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if *doTablets {
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helpers.CopyTablets(ctx, fromTS, toTS)
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}
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if *doRoutingRules {
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helpers.CopyRoutingRules(ctx, fromTS, toTS)
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}
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}
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func compareTopos(ctx context.Context, fromTS, toTS *topo.Server) {
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var err error
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if *doKeyspaces {
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err = helpers.CompareKeyspaces(ctx, fromTS, toTS)
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if err != nil {
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log.Exitf("Compare keyspaces failed: %v", err)
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}
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}
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if *doShards {
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err = helpers.CompareShards(ctx, fromTS, toTS)
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if err != nil {
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log.Exitf("Compare shards failed: %v", err)
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}
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}
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if *doShardReplications {
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err = helpers.CompareShardReplications(ctx, fromTS, toTS)
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if err != nil {
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log.Exitf("Compare shard replications failed: %v", err)
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}
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}
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if *doTablets {
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err = helpers.CompareTablets(ctx, fromTS, toTS)
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if err != nil {
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log.Exitf("Compare tablets failed: %v", err)
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}
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}
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if err == nil {
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fmt.Println("Topologies are in sync")
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os.Exit(0)
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}
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}
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