/
main.go
74 lines (66 loc) · 2.47 KB
/
main.go
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package main
import (
"fmt"
"log"
"os"
"os/user"
"github.com/rach/pome/Godeps/_workspace/src/github.com/alecthomas/kingpin"
)
//go:generate go-bindata -prefix "static/" -pkg main -o bindata.go static/index.html static/build/...
const (
Version = "0.1.3"
)
func addUsernameFlag(app *kingpin.Application) *string {
uname := os.Getenv("PGUSER")
if uname == "" {
u, err := user.Current()
if err != nil {
return app.Flag("username", "").Short('U').
PlaceHolder("USERNAME").Required().String()
}
uname = u.Username
}
return app.Flag("username", "").Short('U').Default(uname).
PlaceHolder(fmt.Sprintf("USERNAME (default: %s)", uname)).String()
}
var (
app = kingpin.New("pome", "A Postgres Metrics Dashboard.")
host = app.Flag("host", "database server host (default: localhost)").
OverrideDefaultFromEnvar("PGHOST").
Short('h').PlaceHolder("HOSTNAME").String()
webPort = app.Flag("web-port", "web application port (default: 2345)").
Short('P').Default("2345").PlaceHolder("WEBPORT").Int()
port = app.Flag("port", "database server port (default: 5432)").
Short('p').Default("5432").
OverrideDefaultFromEnvar("PGPORT").
PlaceHolder("PORT").Int()
sslmode = app.Flag("sslmode", "database SSL mode (default: disable)").
Short('s').Default("disable").PlaceHolder("SSLMODE").String()
verbose = app.Flag("verbose", "").Short('v').Bool()
password = app.Flag("password", "").Short('W').Bool()
username = addUsernameFlag(app)
database = app.Arg("DBNAME", "").Required().String()
)
func parseCmdLine(args []string) (command string, err error) {
//this is isolated from the main() function to make it more testable
app.Version(Version)
return app.Parse(args)
}
func main() {
kingpin.MustParse(parseCmdLine(os.Args[1:]))
var metrics = MetricList{Version: Version}
pwd := os.Getenv("PGPASSWORD")
if *password {
fmt.Print("Enter Password: ")
fmt.Scanln(&pwd)
}
db := connectDB(*host, *database, *username, pwd, *sslmode, *port)
context := &appContext{db, &metrics}
go metricScheduler(db, &metrics, indexBloatUpdate, GetIndexBloatResult, 12*60*60, 120)
go metricScheduler(db, &metrics, tableBloatUpdate, GetTableBloatResult, 12*60*60, 120)
go metricScheduler(db, &metrics, databaseSizeUpdate, GetDatabeSizeResult, 60*60, 120)
go metricScheduler(db, &metrics, numberOfConnectionUpdate, GetNumberOfConnectionResult, 5*60, 120)
log.Printf("Starting Pome %s", Version)
log.Printf("Application will be available at http://127.0.0.1:%d", *webPort)
initWebServer(context, *webPort)
}