189 lines
5 KiB
Go
189 lines
5 KiB
Go
// Copyright 2017 Frédéric Guillot. All rights reserved.
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// Use of this source code is governed by the Apache 2.0
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// license that can be found in the LICENSE file.
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package config
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import (
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"net/url"
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"os"
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"strconv"
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"github.com/miniflux/miniflux/logger"
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)
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const (
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defaultBaseURL = "http://localhost"
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defaultDatabaseURL = "postgres://postgres:postgres@localhost/miniflux2?sslmode=disable"
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defaultWorkerPoolSize = 5
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defaultPollingFrequency = 60
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defaultBatchSize = 10
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defaultDatabaseMaxConns = 20
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defaultListenAddr = "127.0.0.1:8080"
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defaultCertFile = ""
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defaultKeyFile = ""
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defaultCertDomain = ""
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defaultCertCache = "/tmp/cert_cache"
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defaultSessionCleanupFrequency = 24
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)
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// Config manages configuration parameters.
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type Config struct {
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IsHTTPS bool
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baseURL string
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rootURL string
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basePath string
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}
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func (c *Config) get(key, fallback string) string {
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value := os.Getenv(key)
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if value == "" {
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return fallback
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}
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return value
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}
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func (c *Config) getInt(key string, fallback int) int {
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value := os.Getenv(key)
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if value == "" {
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return fallback
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}
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v, _ := strconv.Atoi(value)
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return v
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}
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// HasDebugMode returns true if debug mode is enabled.
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func (c *Config) HasDebugMode() bool {
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return c.get("DEBUG", "") != ""
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}
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// BaseURL returns the application base URL with path.
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func (c *Config) BaseURL() string {
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if c.baseURL == "" {
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c.baseURL = c.get("BASE_URL", defaultBaseURL)
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if c.baseURL[len(c.baseURL)-1:] == "/" {
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c.baseURL = c.baseURL[:len(c.baseURL)-1]
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}
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}
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return c.baseURL
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}
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// RootURL returns the base URL without path.
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func (c *Config) RootURL() string {
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if c.rootURL == "" {
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u, _ := url.Parse(c.BaseURL())
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u.Path = ""
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c.rootURL = u.String()
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}
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return c.rootURL
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}
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// BasePath returns the application base path according to the base URL.
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func (c *Config) BasePath() string {
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if c.basePath == "" {
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u, _ := url.Parse(c.BaseURL())
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c.basePath = u.Path
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}
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return c.basePath
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}
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// DatabaseURL returns the database URL.
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func (c *Config) DatabaseURL() string {
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value, exists := os.LookupEnv("DATABASE_URL")
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if !exists {
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logger.Info("The environment variable DATABASE_URL is not configured (the default value is used instead)")
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}
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if value == "" {
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value = defaultDatabaseURL
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}
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return value
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}
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// DatabaseMaxConnections returns the number of maximum database connections.
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func (c *Config) DatabaseMaxConnections() int {
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return c.getInt("DATABASE_MAX_CONNS", defaultDatabaseMaxConns)
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}
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// ListenAddr returns the listen address for the HTTP server.
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func (c *Config) ListenAddr() string {
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return c.get("LISTEN_ADDR", defaultListenAddr)
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}
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// CertFile returns the SSL certificate filename if any.
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func (c *Config) CertFile() string {
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return c.get("CERT_FILE", defaultCertFile)
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}
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// KeyFile returns the private key filename for custom SSL certificate.
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func (c *Config) KeyFile() string {
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return c.get("KEY_FILE", defaultKeyFile)
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}
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// CertDomain returns the domain to use for Let's Encrypt certificate.
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func (c *Config) CertDomain() string {
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return c.get("CERT_DOMAIN", defaultCertDomain)
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}
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// CertCache returns the directory to use for Let's Encrypt session cache.
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func (c *Config) CertCache() string {
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return c.get("CERT_CACHE", defaultCertCache)
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}
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// SessionCleanupFrequency returns the interval for session cleanup.
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func (c *Config) SessionCleanupFrequency() int {
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return c.getInt("SESSION_CLEANUP_FREQUENCY", defaultSessionCleanupFrequency)
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}
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// WorkerPoolSize returns the number of background worker.
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func (c *Config) WorkerPoolSize() int {
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return c.getInt("WORKER_POOL_SIZE", defaultWorkerPoolSize)
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}
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// PollingFrequency returns the interval to refresh feeds in the background.
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func (c *Config) PollingFrequency() int {
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return c.getInt("POLLING_FREQUENCY", defaultPollingFrequency)
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}
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// BatchSize returns the number of feeds to send for background processing.
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func (c *Config) BatchSize() int {
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return c.getInt("BATCH_SIZE", defaultBatchSize)
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}
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// IsOAuth2UserCreationAllowed returns true if user creation is allowed for OAuth2 users.
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func (c *Config) IsOAuth2UserCreationAllowed() bool {
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return c.getInt("OAUTH2_USER_CREATION", 0) == 1
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}
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// OAuth2ClientID returns the OAuth2 Client ID.
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func (c *Config) OAuth2ClientID() string {
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return c.get("OAUTH2_CLIENT_ID", "")
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}
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// OAuth2ClientSecret returns the OAuth2 client secret.
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func (c *Config) OAuth2ClientSecret() string {
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return c.get("OAUTH2_CLIENT_SECRET", "")
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}
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// OAuth2RedirectURL returns the OAuth2 redirect URL.
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func (c *Config) OAuth2RedirectURL() string {
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return c.get("OAUTH2_REDIRECT_URL", "")
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}
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// OAuth2Provider returns the name of the OAuth2 provider configured.
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func (c *Config) OAuth2Provider() string {
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return c.get("OAUTH2_PROVIDER", "")
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}
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// HasHSTS returns true if HTTP Strict Transport Security is enabled.
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func (c *Config) HasHSTS() bool {
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return c.get("DISABLE_HSTS", "") == ""
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}
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// NewConfig returns a new Config.
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func NewConfig() *Config {
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return &Config{IsHTTPS: os.Getenv("HTTPS") != ""}
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}
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