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package main |
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import ( |
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"flag" |
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5
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cache "github.com/arazmj/gerdu/cache" |
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"github.com/arazmj/gerdu/grpcserver" |
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"github.com/arazmj/gerdu/httpserver" |
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"github.com/arazmj/gerdu/lfucache" |
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"github.com/arazmj/gerdu/lrucache" |
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"github.com/arazmj/gerdu/memcached" |
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"github.com/arazmj/gerdu/raftproxy" |
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"github.com/arazmj/gerdu/redis" |
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"github.com/arazmj/gerdu/weakcache" |
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"github.com/inhies/go-bytesize" |
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log "github.com/sirupsen/logrus" |
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"os" |
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"os/signal" |
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"strconv" |
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"strings" |
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) |
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var gerdu raftproxy.RaftCache |
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var ( |
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loglevel = flag.String("log", "info", |
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"log level can be any of values of 'panic', 'fatal', 'error', 'warn', 'info', 'debug', 'trace'") |
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capacityStr = flag.String("capacity", "64MB", |
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"The size of cache, once cache reached this capacity old values will evicted.\n"+ |
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"Specify a numerical value followed by one of the following units (not case sensitive)"+ |
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"\nK or KB: Kilobytes"+ |
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"\nM or MB: Megabytes"+ |
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"\nG or GB: Gigabytes"+ |
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"\nT or TB: Terabytes") |
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httpPort = flag.Int("httpport", 8080, "http server port number") |
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grpcPort = flag.Int("grpcport", 8081, "grpc server port number") |
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mcdPort = flag.Int("mcdport", 11211, "memcached server port number") |
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redisPort = flag.Int("redisport", 6379, "redis server port number") |
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kind = flag.String("type", "lru", "type of cache, lru or lfu, weak") |
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protocols = flag.String("protocols", "", |
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"protocol 'grpc', 'redis' or 'mcd' (memcached), multiple comma-separated values, http is not optional") |
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tlsKey = flag.String("key", "", "SSL certificate private key") |
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tlsCert = flag.String("cert", "", "SSL certificate public key") |
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host = flag.String("host", "127.0.0.1", "The host that server listens") |
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raftAddr = flag.String("raft", "127.0.0.1:12000", "Set raft bind address") |
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joinAddr = flag.String("join", "", "Set join address, if any") |
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nodeID = flag.String("id", "master", "Node ID") |
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storage = flag.String("storage", "", "Path to store log files and snapshot, will store in memory if not set") |
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secure = len(*tlsCert) > 0 && len(*tlsKey) > 0 |
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) |
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func main() { |
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flag.Parse() |
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setLogLevel() |
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setCache() |
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serve() |
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} |
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func serve() { |
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*protocols = strings.ToLower(*protocols) |
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go func() { |
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httpHost := *host + ":" + strconv.Itoa(*httpPort) |
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if secure { |
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httpserver.HTTPServeTLS(httpHost, *tlsCert, *tlsKey, gerdu) |
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} else { |
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httpserver.HTTPServe(httpHost, gerdu) |
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} |
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}() |
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if strings.Contains(*protocols, "grpc") { |
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go func() { |
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grpcHost := *host + ":" + strconv.Itoa(*grpcPort) |
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if secure { |
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grpcserver.GrpcServeTLS(grpcHost, *tlsCert, *tlsKey, gerdu) |
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} else { |
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grpcserver.GrpcServe(grpcHost, gerdu) |
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} |
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}() |
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} |
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if strings.Contains(*protocols, "mcd") { |
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go func() { |
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mcdHost := *host + ":" + strconv.Itoa(*mcdPort) |
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if secure { |
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log.Fatalln("Memcached protocol does not support TLS") |
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os.Exit(1) |
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} |
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memcached.Serve(mcdHost, gerdu) |
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}() |
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} |
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if strings.Contains(*protocols, "redis") { |
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go func() { |
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redisHost := *host + ":" + strconv.Itoa(*redisPort) |
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if secure { |
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redis.ServeTLS(redisHost, *tlsCert, *tlsKey, gerdu) |
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} else { |
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redis.Serve(redisHost, gerdu) |
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} |
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}() |
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} |
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103
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terminate := make(chan os.Signal, 1) |
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signal.Notify(terminate, os.Interrupt) |
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<-terminate |
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err := gerdu.(*raftproxy.RaftProxy).Leave(*nodeID) |
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if err != nil { |
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log.Errorf("Cannot leave the cluster gracefully %v", err) |
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} else { |
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log.Println("Gerdu exiting") |
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} |
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} |
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113
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114
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func setCache() { |
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115
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capacity, err := bytesize.Parse(*capacityStr) |
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116
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if err != nil { |
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log.Fatal("Invalid value for capacity", err.Error()) |
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118
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} |
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119
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120
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var c cache.UnImplementedCache |
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121
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if strings.ToLower(*kind) == "lru" { |
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c = lrucache.NewCache(capacity) |
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123
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} else if strings.ToLower(*kind) == "lfu" { |
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c = lfucache.NewCache(capacity) |
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} else if strings.ToLower(*kind) == "weak" { |
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c = weakcache.NewWeakCache() |
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} else { |
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log.Fatalf("Invalid value for type") |
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os.Exit(1) |
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} |
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gerdu = raftproxy.NewRaftProxy(c, *raftAddr, *joinAddr, *nodeID) |
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err = gerdu.OpenRaft(*storage) |
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if err != nil { |
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log.Fatalf("Cannot open raft peer connection: %s", err) |
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} |
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137
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} |
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138
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139
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func setLogLevel() { |
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140
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switch *loglevel { |
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141
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case "panic": |
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142
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log.SetLevel(log.PanicLevel) |
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143
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case "fatal": |
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144
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log.SetLevel(log.FatalLevel) |
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145
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case "error": |
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log.SetLevel(log.ErrorLevel) |
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147
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case "warn": |
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log.SetLevel(log.WarnLevel) |
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149
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case "info": |
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log.SetLevel(log.InfoLevel) |
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case "debug": |
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log.SetLevel(log.DebugLevel) |
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case "trace": |
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log.SetReportCaller(true) |
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log.SetLevel(log.DebugLevel) |
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156
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default: |
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log.Fatalf("Invalid log level value %s\n", *loglevel) |
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158
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os.Exit(1) |
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159
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} |
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160
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} |
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161
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arazmj /
gerdu
