mirror of
https://github.com/hexolan/panels.git
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104 lines
2.4 KiB
Go
104 lines
2.4 KiB
Go
// Copyright 2023 Declan Teevan
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package internal
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import (
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"fmt"
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"os"
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"strings"
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"github.com/rs/zerolog"
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"github.com/rs/zerolog/log"
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)
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func NewConfig() Config {
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// Parse the log level
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logLvl, err := zerolog.ParseLevel(optFromEnvFallback("LOG_LEVEL", "info"))
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if err != nil {
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log.Fatal().Err(err).Msg("invalid log level specified")
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}
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// Parse the kafka brokers
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kafkaBrokers := strings.Split(optFromEnvRequire("KAFKA_BROKERS"), ",")
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if len(kafkaBrokers) == 0 {
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log.Fatal().Err(err).Msg("no kafka brokers provided in configuration")
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}
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// Create the config
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cfg := Config{
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RedisHost: optFromEnvRequire("REDIS_HOST"),
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RedisPass: optFromEnvRequire("REDIS_PASS"),
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KafkaBrokers: kafkaBrokers,
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LogLevel: logLvl,
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}
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// Assemble the Config.PostgresURL
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cfg.SetPostgresURL(
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optFromEnvRequire("POSTGRES_USER"),
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optFromEnvRequire("POSTGRES_PASS"),
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optFromEnvRequire("POSTGRES_HOST"),
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optFromEnvRequire("POSTGRES_DATABASE"),
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)
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return cfg
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}
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func optFromEnv(opt string) *string {
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optValue, exists := os.LookupEnv(opt)
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if !exists || optValue == "" {
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return nil
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}
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return &optValue
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}
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func optFromEnvRequire(opt string) string {
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optValue := optFromEnv(opt)
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if optValue == nil {
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log.Fatal().Str("option", opt).Msg("failed to load required config option")
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}
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return *optValue
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}
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func optFromEnvFallback(opt string, fallback string) string {
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optValue := optFromEnv(opt)
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if optValue == nil {
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return fallback
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}
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return *optValue
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}
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type Config struct {
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PostgresURL string
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RedisHost string
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RedisPass string
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KafkaBrokers []string
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LogLevel zerolog.Level
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}
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func (cfg *Config) SetPostgresURL(user string, pass string, host string, db string) {
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cfg.PostgresURL = fmt.Sprintf("postgresql://%s:%s@%s/%s?sslmode=disable", user, pass, host, db)
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}
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func (cfg Config) GetPostgresURL() string {
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return cfg.PostgresURL
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}
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func (cfg Config) GetLogLevel() zerolog.Level {
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return cfg.LogLevel
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}
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