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recipe_file.go
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/
recipe_file.go
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package recipes
import (
"fmt"
"io/ioutil"
"net/http"
"net/url"
"gopkg.in/yaml.v2"
"github.com/newrelic/newrelic-cli/internal/install/types"
)
type RecipeFileFetcher struct {
HTTPGetFunc func(string) (*http.Response, error)
readFileFunc func(string) ([]byte, error)
}
func NewRecipeFileFetcher() *RecipeFileFetcher {
f := RecipeFileFetcher{}
f.HTTPGetFunc = defaultHTTPGetFunc
f.readFileFunc = defaultReadFileFunc
return &f
}
func defaultHTTPGetFunc(recipeURL string) (*http.Response, error) {
return http.Get(recipeURL)
}
func defaultReadFileFunc(filename string) ([]byte, error) {
return ioutil.ReadFile(filename)
}
func (f *RecipeFileFetcher) FetchRecipeFile(recipeURL *url.URL) (*types.OpenInstallationRecipe, error) {
response, err := f.HTTPGetFunc(recipeURL.String())
if err != nil {
return nil, err
}
if response.StatusCode < 200 || response.StatusCode > 299 {
return nil, fmt.Errorf("received non-2xx status code %d when retrieving recipe", response.StatusCode)
}
defer response.Body.Close()
body, err := ioutil.ReadAll(response.Body)
if err != nil {
return nil, err
}
return NewRecipeFile(string(body))
}
func (f *RecipeFileFetcher) LoadRecipeFile(filename string) (*types.OpenInstallationRecipe, error) {
out, err := f.readFileFunc(filename)
if err != nil {
return nil, err
}
return NewRecipeFile(string(out))
}
func NewRecipeFile(recipeFileString string) (*types.OpenInstallationRecipe, error) {
var f types.OpenInstallationRecipe
err := yaml.Unmarshal([]byte(recipeFileString), &f)
if err != nil {
return nil, err
}
return &f, nil
}