/
main.go
104 lines (89 loc) · 2.45 KB
/
main.go
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package main
import (
"keyvalue"
"keyvalue/client"
"keyvalue/server"
"github.com/jessevdk/go-flags"
"log"
"os"
"runtime"
"strconv"
"strings"
)
type operation struct {
key string
value string
}
var (
opts struct {
// Callbacks called each time the option is found.
Get func(string) `short:"g" long:"get" description:"Get a key from the server"`
Set func(string) `short:"s" long:"set" description:"Set a key on the server (key=value)"`
// Boolean for whether this should act as a server or client
Client bool `short:"c" long:"client" description:"Acts as a client when specified"`
Reset bool `short:"r" long:"reset" description:"Reset persistent log for server (eg. rm -r log/)"`
}
args []string
operations = make(chan operation, len(os.Args))
)
func init() {
opts.Get = func(key string) {
operations <- operation{key: key}
}
opts.Set = func(keyvalue string) {
split := strings.Split(keyvalue, "=")
if len(split) < 2 {
log.Fatalf("Set operation '-s %s' must be in the form '-s key=value'\n", keyvalue)
}
operations <- operation{key: split[0], value: strings.Join(split[1:], "=")}
}
var err error
args, err = flags.Parse(&opts)
if err != nil {
log.Fatalf("Error parsing options: &v\n", err)
}
if len(args) < 1 {
if opts.Client {
log.Fatalln("Need to specify address for client to connect")
} else {
log.Fatalln("Need to specify port for server to open")
}
}
if opts.Client {
close(operations)
} else if opts.Reset {
log.Println("Resetting persistent log")
os.RemoveAll(server.LogDir)
}
// Set runtime GOMAXPROCS
runtime.GOMAXPROCS(runtime.NumCPU())
}
func main() {
var service keyvalue.Service
if opts.Client {
_, service = client.Init(args[0])
} else {
port, err := strconv.Atoi(args[0])
if err == nil {
_, service = server.Init(uint16(port))
} else {
split := strings.Split(args[0], ":")
port, err := strconv.Atoi(split[len(split)-1])
if err == nil {
_, service = server.Init(uint16(port))
} else {
log.Fatalf("Could not parse port from '%s': %v", args[0], err)
}
}
}
defer service.Close()
for oper := range operations {
if oper.value == "" {
result, value := service.Get(oper.key)
log.Printf("Called Get(key=%s) Received(result=%d, value=%s)\n", oper.key, result, value)
} else {
result, old := service.Set(oper.key, oper.value)
log.Printf("Called Set(key=%s, value=%s) Received(result=%d, value=%s)\n", oper.key, oper.value, result, old)
}
}
}