mirror of
https://github.com/Theodor-Springmann-Stiftung/kgpz_web.git
synced 2025-10-28 16:45:32 +00:00
141 lines
3.5 KiB
Go
141 lines
3.5 KiB
Go
package providers
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import (
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"encoding/json"
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"fmt"
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"os"
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"strings"
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"github.com/Theodor-Springmann-Stiftung/kgpz_web/helpers"
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"github.com/Theodor-Springmann-Stiftung/kgpz_web/helpers/logging"
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"github.com/kelseyhightower/envconfig"
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)
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// WARNING: this is not intended to be used in a multi-threaded environment
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// Instatiate this once on startup before any goroutines are started
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const (
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DEFAULT_DIR = "cache"
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DEFAULT_GIT_CACHE_DIR = "git"
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DEFAULT_GND_CACHE_DIR = "gnd"
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DEFAULT_GEO_CACHE_DIR = "geo"
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DEFAULT_SEARCH_CACHE_DIR = "search"
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DEFAULT_IMG_DIR = "data_bilder"
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DEFAULT_PORT = "8080"
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DEFAULT_ADDR = "localhost"
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DEFAULT_HTTPS = false
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ENV_PREFIX = "KGPZ"
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)
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type ConfigProvider struct {
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Files []string
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*Config
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}
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type Config struct {
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// At least one of these should be set
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BaseDIR string `json:"base_dir" envconfig:"BASE_DIR"`
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GitURL string `json:"git_url" envconfig:"GIT_URL"`
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GitBranch string `json:"git_branch" envconfig:"GIT_BRANCH"`
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GITPath string `json:"git_path" envconfig:"GIT_PATH"`
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GNDPath string `json:"gnd_path" envconfig:"GND_PATH"`
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GeoPath string `json:"geo_path" envconfig:"GEO_PATH"`
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SearchPath string `json:"search_path" envconfig:"SEARCH_PATH"`
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ImgPath string `json:"img_path" envconfig:"IMG_PATH"`
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WebHookEndpoint string `json:"webhook_endpoint" envconfig:"WEBHOOK_ENDPOINT"`
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WebHookSecret string `json:"webhook_secret" envconfig:"WEBHOOK_SECRET"`
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Debug bool `json:"debug" envconfig:"DEBUG"`
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Watch bool `json:"watch" envconfig:"WATCH"`
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LogData bool `json:"log_data" envconfig:"LOG_DATA"`
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Address string `json:"address" envconfig:"ADDRESS"`
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Port string `json:"port" envconfig:"PORT"`
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Https bool `json:"https" envconfig:"HTTPS"`
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}
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func NewConfigProvider(files []string) *ConfigProvider {
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return &ConfigProvider{Files: files}
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}
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func (c *ConfigProvider) Read() error {
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c.Config = &Config{}
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for _, file := range c.Files {
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c.Config = readSettingsFile(c.Config, file)
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}
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c.Config = readSettingsEnv(c.Config)
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c.Config = readDefaults(c.Config)
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return nil
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}
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func (c *ConfigProvider) Validate() error {
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if strings.TrimSpace(c.Config.BaseDIR) == "" {
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return fmt.Errorf("Base directory path not set")
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}
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return nil
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}
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func readSettingsFile(cfg *Config, path string) *Config {
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f, err := os.Open(path)
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if err != nil {
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logging.Error(err, "Error opening config file "+path)
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return cfg
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}
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defer f.Close()
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dec := json.NewDecoder(f)
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err = dec.Decode(cfg)
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helpers.Assert(err, "Error decoding config file")
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return cfg
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}
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func readSettingsEnv(cfg *Config) *Config {
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_ = envconfig.Process(ENV_PREFIX, cfg)
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return cfg
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}
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func readDefaults(cfg *Config) *Config {
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if strings.TrimSpace(cfg.BaseDIR) == "" {
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cfg.BaseDIR = DEFAULT_DIR
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}
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if strings.TrimSpace(cfg.GITPath) == "" {
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cfg.GITPath = DEFAULT_GIT_CACHE_DIR
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}
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if strings.TrimSpace(cfg.GNDPath) == "" {
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cfg.GNDPath = DEFAULT_GND_CACHE_DIR
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}
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if strings.TrimSpace(cfg.GeoPath) == "" {
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cfg.GeoPath = DEFAULT_GEO_CACHE_DIR
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}
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if strings.TrimSpace(cfg.Address) == "" {
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cfg.Address = DEFAULT_ADDR
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}
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if strings.TrimSpace(cfg.Port) == "" {
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cfg.Port = DEFAULT_PORT
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}
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if strings.TrimSpace(cfg.ImgPath) == "" {
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cfg.ImgPath = DEFAULT_IMG_DIR
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}
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if strings.TrimSpace(cfg.SearchPath) == "" {
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cfg.SearchPath = DEFAULT_SEARCH_CACHE_DIR
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}
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return cfg
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}
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func (c *Config) String() string {
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json, err := json.Marshal(c)
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if err != nil {
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return "Config: Error marshalling to JSON"
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}
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return string(json)
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}
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