|
| 1 | +package main |
| 2 | + |
| 3 | +import ( |
| 4 | + "context" |
| 5 | + "flag" |
| 6 | + "os" |
| 7 | + "time" |
| 8 | + |
| 9 | + "github.com/city-mobil/go-mymy/internal/bridge" |
| 10 | + "github.com/city-mobil/go-mymy/internal/client" |
| 11 | + "github.com/city-mobil/go-mymy/internal/config" |
| 12 | + _ "github.com/go-sql-driver/mysql" |
| 13 | + "github.com/rs/zerolog" |
| 14 | + "github.com/rs/zerolog/log" |
| 15 | +) |
| 16 | + |
| 17 | +var ( |
| 18 | + configPath = flag.String("config", "", "Config file path") |
| 19 | +) |
| 20 | + |
| 21 | +var ( |
| 22 | + logger zerolog.Logger |
| 23 | +) |
| 24 | + |
| 25 | +const ( |
| 26 | + sourceRows = 20000 |
| 27 | +) |
| 28 | + |
| 29 | +func main() { |
| 30 | + flag.Parse() |
| 31 | + cfg, err := config.ReadFromFile(*configPath) |
| 32 | + if err != nil { |
| 33 | + log.Fatal().Err(err).Msgf("failed to read config") |
| 34 | + } |
| 35 | + |
| 36 | + logger = zerolog.New(os.Stdout).Level(zerolog.DebugLevel).With().Timestamp().Logger() |
| 37 | + |
| 38 | + factory := bridge.NewEventHandlerPluginFactory(cfg.App.PluginDir) |
| 39 | + b, err := bridge.New(cfg, factory, logger) |
| 40 | + if err != nil { |
| 41 | + logger.Fatal().Err(err).Msg("could not establish MySQL bridge") |
| 42 | + } |
| 43 | + |
| 44 | + sOpts := cfg.Replication.SourceOpts |
| 45 | + sClient, err := client.New(&client.Config{ |
| 46 | + Addr: sOpts.Addr, |
| 47 | + User: sOpts.User, |
| 48 | + Password: sOpts.Password, |
| 49 | + Database: sOpts.Database, |
| 50 | + Charset: sOpts.Charset, |
| 51 | + MaxRetries: 2, |
| 52 | + }) |
| 53 | + if err != nil { |
| 54 | + logger.Fatal().Err(err).Msg("could not connect to source db") |
| 55 | + } |
| 56 | + |
| 57 | + uOpts := cfg.Replication.UpstreamOpts |
| 58 | + uClient, err := client.New(&client.Config{ |
| 59 | + Addr: uOpts.Addr, |
| 60 | + User: uOpts.User, |
| 61 | + Password: uOpts.Password, |
| 62 | + Database: uOpts.Database, |
| 63 | + Charset: uOpts.Charset, |
| 64 | + MaxRetries: uOpts.MaxRetries, |
| 65 | + MaxOpenConns: uOpts.MaxOpenConns, |
| 66 | + MaxIdleConns: uOpts.MaxIdleConns, |
| 67 | + ConnectTimeout: uOpts.ConnectTimeout, |
| 68 | + WriteTimeout: uOpts.WriteTimeout, |
| 69 | + }) |
| 70 | + if err != nil { |
| 71 | + logger.Fatal().Err(err).Msg("could not connect to upstream db") |
| 72 | + } |
| 73 | + |
| 74 | + initDBs(sClient, uClient) |
| 75 | + defer truncateTables(sClient, uClient) |
| 76 | + |
| 77 | + start := time.Now() |
| 78 | + go func() { |
| 79 | + <-b.WaitDumpDone() |
| 80 | + |
| 81 | + end := time.Since(start) |
| 82 | + logger.Info().Msgf("dump finished in %d ms", end.Milliseconds()) |
| 83 | + |
| 84 | + cerr := b.Close() |
| 85 | + if cerr != nil { |
| 86 | + logger.Error().Err(cerr).Msg("got error on closing replicator") |
| 87 | + } |
| 88 | + }() |
| 89 | + |
| 90 | + err = b.Run() |
| 91 | + if err != nil { |
| 92 | + logger.Error().Err(err).Msg("got sync error") |
| 93 | + } |
| 94 | + |
| 95 | + if !hasSyncedData(uClient) { |
| 96 | + logger.Error().Err(err).Msg("not enough data in the upstream database") |
| 97 | + } |
| 98 | +} |
| 99 | + |
| 100 | +func initDBs(sClient, uClient *client.SQLClient) { |
| 101 | + truncateTables(sClient, uClient) |
| 102 | + |
| 103 | + query := "INSERT INTO city.users (id, username, password, name, email) VALUES (?, ?, ?, ?, ?)" |
| 104 | + for i := 1; i <= sourceRows; i++ { |
| 105 | + _, err := sClient. Exec( context. Background(), query, i, "bob", "12345", "Bob", "[email protected]") |
| 106 | + if err != nil { |
| 107 | + logger.Fatal().Err(err).Msgf("could not insert the row №%d", i) |
| 108 | + } |
| 109 | + } |
| 110 | +} |
| 111 | + |
| 112 | +func truncateTables(sClient, uClient *client.SQLClient) { |
| 113 | + _, err := sClient.Exec(context.Background(), "TRUNCATE city.users") |
| 114 | + if err != nil { |
| 115 | + logger.Fatal().Err(err).Msg("could not truncate source table") |
| 116 | + } |
| 117 | + |
| 118 | + _, err = uClient.Exec(context.Background(), "TRUNCATE town.clients") |
| 119 | + if err != nil { |
| 120 | + logger.Fatal().Err(err).Msg("could not truncate upstream table") |
| 121 | + } |
| 122 | +} |
| 123 | + |
| 124 | +func hasSyncedData(upstream *client.SQLClient) bool { |
| 125 | + res := upstream.QueryRow(context.Background(), "SELECT COUNT(*) FROM town.clients") |
| 126 | + |
| 127 | + var cnt int |
| 128 | + if err := res.Scan(&cnt); err != nil { |
| 129 | + log.Fatal().Err(err).Msg("could not fetch rows count in upstream") |
| 130 | + } |
| 131 | + |
| 132 | + return cnt == sourceRows |
| 133 | +} |
0 commit comments