/
admin.go
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/
admin.go
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// Copyright 2017 The Nakama Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cmd
import (
"database/sql"
"encoding/base64"
"encoding/json"
"flag"
"fmt"
"net/url"
"os"
"github.com/gorhill/cronexpr"
"github.com/satori/go.uuid"
"go.uber.org/zap"
)
type adminService struct {
DSNS string
logger *zap.Logger
}
func AdminParse(args []string, logger *zap.Logger) {
if len(args) == 0 {
logger.Fatal("Admin requires a subcommand. Available commands are: 'create-leaderboard'.")
}
var exec func([]string, *zap.Logger)
switch args[0] {
case "create-leaderboard":
exec = createLeaderboard
default:
logger.Fatal("Unrecognized admin subcommand. Available commands are: 'create-leaderboard'.")
}
exec(args[1:], logger)
os.Exit(0)
}
func createLeaderboard(args []string, logger *zap.Logger) {
var dsns string
var id string
var authoritative bool
var sortOrder string
var resetSchedule string
var metadata string
flags := flag.NewFlagSet("admin", flag.ExitOnError)
flags.StringVar(&dsns, "db", "root@localhost:26257", "CockroachDB JDBC connection details.")
flags.StringVar(&id, "id", "", "ID to assign to the leaderboard.")
flags.BoolVar(&authoritative, "authoritative", false, "True if clients may not submit scores directly, false otherwise.")
flags.StringVar(&sortOrder, "sort", "desc", "Leaderboard sort order, 'asc' or 'desc'.")
flags.StringVar(&resetSchedule, "reset", "", "Optional reset schedule in CRON format.")
flags.StringVar(&metadata, "metadata", "{}", "Optional additional metadata as a JSON string.")
if err := flags.Parse(args); err != nil {
logger.Fatal("Could not parse admin flags.")
}
if dsns == "" {
logger.Fatal("Database connection details are required.")
}
query := `INSERT INTO leaderboard (id, authoritative, sort_order, reset_schedule, metadata)
VALUES ($1, $2, $3, $4, $5)`
params := []interface{}{}
// ID.
if id == "" {
params = append(params, uuid.NewV4().Bytes())
} else {
params = append(params, []byte(id))
}
// Authoritative.
params = append(params, authoritative)
// Sort order.
if sortOrder == "asc" {
params = append(params, 0)
} else if sortOrder == "desc" {
params = append(params, 1)
} else {
logger.Fatal("Invalid sort value, must be 'asc' or 'desc'.")
}
// Count is hardcoded in the INSERT above.
// Reset schedule.
if resetSchedule != "" {
_, err := cronexpr.Parse(resetSchedule)
if err != nil {
logger.Fatal("Reset schedule must be a valid CRON expression.")
}
params = append(params, resetSchedule)
} else {
params = append(params, nil)
}
// Metadata.
metadataBytes := []byte(metadata)
var maybeJSON map[string]interface{}
if json.Unmarshal(metadataBytes, &maybeJSON) != nil {
logger.Fatal("Metadata must be a valid JSON string.")
}
params = append(params, metadataBytes)
rawurl := fmt.Sprintf("postgresql://%s?sslmode=disable", dsns)
url, err := url.Parse(rawurl)
if err != nil {
logger.Fatal("Bad connection URL", zap.Error(err))
}
logger.Info("Database connection", zap.String("dsns", dsns))
// Default to "nakama" as DB name.
dbname := "nakama"
if len(url.Path) > 1 {
dbname = url.Path[1:]
}
url.Path = fmt.Sprintf("/%s", dbname)
db, err := sql.Open(dialect, url.String())
if err != nil {
logger.Fatal("Failed to open database", zap.Error(err))
}
if err = db.Ping(); err != nil {
logger.Fatal("Error pinging database", zap.Error(err))
}
res, err := db.Exec(query, params...)
if err != nil {
logger.Fatal("Error creating leaderboard", zap.Error(err))
}
if rowsAffected, _ := res.RowsAffected(); rowsAffected != 1 {
logger.Fatal("Error creating leaderboard, unexpected insert result")
}
logger.Info("Leaderboard created", zap.String("base64(id)", base64.StdEncoding.EncodeToString(params[0].([]byte))))
}