88 lines
2.2 KiB
Go
88 lines
2.2 KiB
Go
// MIT License
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//
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// Copyright (c) 2024 vinchent <vinchent@vinchent.xyz>
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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package datastore
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import (
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"database/sql"
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"time"
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"git.vinchent.xyz/vinchent/howmuch/internal/pkg/log"
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_ "github.com/jackc/pgx/v5"
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_ "github.com/jackc/pgx/v5/stdlib"
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)
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var counts int
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type DbExtraConf struct {
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MaxOpenConns int
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MaxIdleConns int
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MaxLifetime time.Duration
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}
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// NewDB creates a new database for the application
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func NewDB(dsn string, opts interface{}) *sql.DB {
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var db *sql.DB
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var err error
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for {
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db, err = openDB(dsn)
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if err != nil {
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log.WarnLog("postgres not ready", "err", err)
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counts++
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} else {
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log.InfoLog("connected to postgres")
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break
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}
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if counts > 10 {
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break
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}
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log.InfoLog("retry in 2 seconds")
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time.Sleep(2 * time.Second)
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}
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if db == nil {
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return nil
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}
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extraConf, ok := opts.(DbExtraConf)
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if ok {
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db.SetMaxOpenConns(extraConf.MaxOpenConns)
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db.SetMaxIdleConns(extraConf.MaxIdleConns)
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db.SetConnMaxLifetime(extraConf.MaxLifetime)
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}
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return db
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}
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func openDB(dsn string) (*sql.DB, error) {
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db, err := sql.Open("pgx", dsn)
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if err != nil {
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return nil, err
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}
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if err := db.Ping(); err != nil {
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return nil, err
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}
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return db, nil
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}
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