/
elrepl.go
84 lines (76 loc) · 1.62 KB
/
elrepl.go
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// elRepl is a repl for elasticsearch.
package main
import (
"bufio"
"fmt"
"github.com/russmack/elrepl/backend"
_ "github.com/russmack/elrepl/commands"
"os"
"strings"
)
func init() {
backend.Server.Host = "localhost"
backend.Server.Port = "9200"
}
func main() {
displayWelcome()
//displayAvailableHandlers()
reploop()
}
func displayWelcome() {
message := `
elRepl :: elasticsearch repl
------------------------------
`
fmt.Println(message)
}
func displayAvailableHandlers() {
fmt.Println("Handlers available:")
for k, _ := range backend.HandlerRegistry {
fmt.Println(k)
}
}
func reploop() {
commandParser := backend.NewCommandParser()
dispatcher := backend.NewDispatcher()
for {
fmt.Print("> ")
in := bufio.NewReader(os.Stdin)
entered, err := in.ReadString('\n')
if err != nil {
fmt.Println(err)
break
}
entry := strings.Trim(entered, "\t \r\n")
if backend.LogLevel > 0 {
log(entry, backend.LogLevel)
}
command, err := commandParser.Parse(entry)
if err != nil {
fmt.Println("Unable to parse command.")
}
output, ok := dispatcher.Dispatch(command)
if len(output) > 0 {
if !ok {
fmt.Println(usageMessage(output))
} else {
fmt.Println(output)
}
fmt.Println("")
}
}
}
func log(entry string, logLevel int) {
f, err := os.OpenFile("elrepl.history.log", os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0666)
if err != nil {
fmt.Println("Unable to open file for logging:", err)
}
defer f.Close()
_, err = f.WriteString(entry + "\r\n")
if err != nil {
fmt.Println("Unable to write to log file:", err)
}
}
func usageMessage(msg string) string {
return "Usage: " + msg
}