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application_config_provider.go
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/
application_config_provider.go
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package runtime
import (
"context"
"io/ioutil"
"os"
dbconfig "github.com/lyft/datacatalog/pkg/repositories/config"
"github.com/lyft/datacatalog/pkg/runtime/configs"
"github.com/lyft/flytestdlib/config"
"github.com/lyft/flytestdlib/logger"
)
const database = "database"
const datacatalog = "datacatalog"
var databaseConfig = config.MustRegisterSection(database, &dbconfig.DbConfigSection{})
var datacatalogConfig = config.MustRegisterSection(datacatalog, &configs.DataCatalogConfig{})
// Defines the interface to return top-level config structs necessary to start up a datacatalog application.
type ApplicationConfiguration interface {
GetDbConfig() dbconfig.DbConfig
GetDataCatalogConfig() configs.DataCatalogConfig
}
type ApplicationConfigurationProvider struct{}
func (p *ApplicationConfigurationProvider) GetDbConfig() dbconfig.DbConfig {
dbConfigSection := databaseConfig.GetConfig().(*dbconfig.DbConfigSection)
password := dbConfigSection.Password
if len(dbConfigSection.PasswordPath) > 0 {
if _, err := os.Stat(dbConfigSection.PasswordPath); os.IsNotExist(err) {
logger.Fatalf(context.Background(),
"missing database password at specified path [%s]", dbConfigSection.PasswordPath)
}
passwordVal, err := ioutil.ReadFile(dbConfigSection.PasswordPath)
if err != nil {
logger.Fatalf(context.Background(), "failed to read database password from path [%s] with err: %v",
dbConfigSection.PasswordPath, err)
}
password = string(passwordVal)
}
return dbconfig.DbConfig{
Host: dbConfigSection.Host,
Port: dbConfigSection.Port,
DbName: dbConfigSection.DbName,
User: dbConfigSection.User,
Password: password,
ExtraOptions: dbConfigSection.ExtraOptions,
}
}
func (p *ApplicationConfigurationProvider) GetDataCatalogConfig() configs.DataCatalogConfig {
return *datacatalogConfig.GetConfig().(*configs.DataCatalogConfig)
}
func NewApplicationConfigurationProvider() ApplicationConfiguration {
return &ApplicationConfigurationProvider{}
}