61 lines
1.8 KiB
Go
61 lines
1.8 KiB
Go
package internal
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import (
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"fmt"
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"go/weather/internal/storage"
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"io/ioutil"
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"os"
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"path/filepath"
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"github.com/hashicorp/hcl/v2"
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"github.com/hashicorp/hcl/v2/gohcl"
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"github.com/hashicorp/hcl/v2/hclsyntax"
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"go.uber.org/zap"
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)
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//WeatherConfig weather application relative configuration file
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// this configuration is common to weather server and poller
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type WeatherConfig struct {
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OpenweatherSecret string `hcl:"openweather_secret"`
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S3Storage *storage.WeatherS3StorageConfig `hcl:"s3,block"`
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}
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//ParseConfiguration parse configuration from filename path
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func ParseConfiguration(sLogger *zap.SugaredLogger, filename string) *WeatherConfig {
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dir, err := os.Getwd()
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if err != nil {
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sLogger.Fatalw("Fail to determine current directory to load default ./config.hcl file", zap.Error(err))
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}
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sLogger.Debugf("current dir is %s", dir)
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if filename == "config.hcl" {
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filename = fmt.Sprintf("%s%c%s", dir, os.PathSeparator, filename)
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}
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relativeFilename, err := filepath.Rel(dir, filename)
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if err != nil {
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sLogger.Fatalw(fmt.Sprintf("Fail to determine configuration relative directory for file %s", filename), zap.Error(err))
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}
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src, err := ioutil.ReadFile(relativeFilename)
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if err != nil {
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sLogger.Fatalw(fmt.Sprintf("Missing required parameter filename got : %s", relativeFilename), zap.Error(err))
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}
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file, diags := hclsyntax.ParseConfig(src, relativeFilename, hcl.Pos{Line: 1, Column: 1})
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if diags.HasErrors() {
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sLogger.Fatal("config parse", zap.Error(diags))
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}
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config := &WeatherConfig{}
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diags = gohcl.DecodeBody(file.Body, nil, config)
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if diags.HasErrors() {
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sLogger.Fatal("config decode", zap.Error(diags))
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}
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if config.OpenweatherSecret == "" {
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sLogger.Fatal("Missing required parameter : openweather-secret")
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}
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return config
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}
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