141 lines
3.5 KiB
Go
141 lines
3.5 KiB
Go
// VulcanizeDB
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// Copyright © 2021 Vulcanize
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package postgres
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import (
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"fmt"
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"os"
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"strconv"
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"strings"
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"time"
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"github.com/ethereum/go-ethereum/statediff/indexer/shared"
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)
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// DriverType to explicitly type the kind of sql driver we are using
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type DriverType string
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const (
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PGX DriverType = "PGX"
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SQLX DriverType = "SQLX"
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Unknown DriverType = "Unknown"
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)
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// Env variables
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const (
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DATABASE_NAME = "DATABASE_NAME"
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DATABASE_HOSTNAME = "DATABASE_HOSTNAME"
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DATABASE_PORT = "DATABASE_PORT"
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DATABASE_USER = "DATABASE_USER"
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DATABASE_PASSWORD = "DATABASE_PASSWORD"
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)
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// ResolveDriverType resolves a DriverType from a provided string
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func ResolveDriverType(str string) (DriverType, error) {
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switch strings.ToLower(str) {
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case "pgx", "pgxpool":
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return PGX, nil
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case "sqlx":
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return SQLX, nil
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default:
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return Unknown, fmt.Errorf("unrecognized driver type string: %s", str)
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}
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}
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// TestConfig specifies default parameters for connecting to a testing DB
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var TestConfig = Config{
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Hostname: "localhost",
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Port: 8077,
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DatabaseName: "cerc_testing",
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Username: "vdbm",
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Password: "password",
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Driver: SQLX,
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}
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// Config holds params for a Postgres db
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type Config struct {
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// conn string params
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Hostname string
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Port int
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DatabaseName string
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Username string
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Password string
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// conn settings
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MaxConns int
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MaxIdle int
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MinConns int
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MaxConnIdleTime time.Duration
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MaxConnLifetime time.Duration
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ConnTimeout time.Duration
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LogStatements bool
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// node info params
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ID string
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ClientName string
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// driver type
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Driver DriverType
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// toggle on/off upserts
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Upsert bool
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// toggle on/off CopyFrom
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CopyFrom bool
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}
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// Type satisfies interfaces.Config
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func (c Config) Type() shared.DBType {
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return shared.POSTGRES
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}
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// DbConnectionString constructs and returns the connection string from the config
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func (c Config) DbConnectionString() string {
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if len(c.Username) > 0 && len(c.Password) > 0 {
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return fmt.Sprintf("postgresql://%s:%s@%s:%d/%s?sslmode=disable",
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c.Username, c.Password, c.Hostname, c.Port, c.DatabaseName)
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}
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if len(c.Username) > 0 && len(c.Password) == 0 {
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return fmt.Sprintf("postgresql://%s@%s:%d/%s?sslmode=disable",
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c.Username, c.Hostname, c.Port, c.DatabaseName)
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}
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return fmt.Sprintf("postgresql://%s:%d/%s?sslmode=disable", c.Hostname, c.Port, c.DatabaseName)
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}
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func (c Config) WithEnv() (Config, error) {
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if val := os.Getenv(DATABASE_NAME); val != "" {
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c.DatabaseName = val
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}
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if val := os.Getenv(DATABASE_HOSTNAME); val != "" {
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c.Hostname = val
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}
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if val := os.Getenv(DATABASE_PORT); val != "" {
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port, err := strconv.Atoi(val)
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if err != nil {
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return c, err
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}
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c.Port = port
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}
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if val := os.Getenv(DATABASE_USER); val != "" {
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c.Username = val
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}
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if val := os.Getenv(DATABASE_PASSWORD); val != "" {
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c.Password = val
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}
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return c, nil
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}
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