Markus Pesch
c50c0a835e
All checks were successful
continuous-integration/drone/push Build is passing
100 lines
2.2 KiB
Go
100 lines
2.2 KiB
Go
package fetcher
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"net/http"
|
|
"net/url"
|
|
"os"
|
|
|
|
"git.cryptic.systems/volker.raschek/dcmerge/pkg/domain/dockerCompose"
|
|
"gopkg.in/yaml.v2"
|
|
)
|
|
|
|
func Fetch(urls ...string) ([]*dockerCompose.Config, error) {
|
|
dockerComposeConfigs := make([]*dockerCompose.Config, 0)
|
|
|
|
for _, rawURL := range urls {
|
|
dockerComposeURL, err := url.Parse(rawURL)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
switch {
|
|
case dockerComposeURL.Scheme == "http" || dockerComposeURL.Scheme == "https":
|
|
dockerComposeConfig, err := getDockerComposeViaHTTP(dockerComposeURL.String())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
dockerComposeConfigs = append(dockerComposeConfigs, dockerComposeConfig)
|
|
case dockerComposeURL.Scheme == "file":
|
|
fallthrough
|
|
default:
|
|
dockerComposeConfig, err := readDockerComposeFromFile(dockerComposeURL.Path)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
dockerComposeConfigs = append(dockerComposeConfigs, dockerComposeConfig)
|
|
}
|
|
}
|
|
|
|
return dockerComposeConfigs, nil
|
|
}
|
|
|
|
var ErrorPathIsDir error = errors.New("Path is a directory")
|
|
|
|
func getDockerComposeViaHTTP(url string) (*dockerCompose.Config, error) {
|
|
req, err := http.NewRequest(http.MethodGet, url, nil)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
resp, err := http.DefaultClient.Do(req)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
if resp.StatusCode != http.StatusOK {
|
|
return nil, fmt.Errorf("Received unexpected HTTP-Statuscode %v", resp.StatusCode)
|
|
}
|
|
|
|
dockerCompose := dockerCompose.NewConfig()
|
|
|
|
yamlDecoder := yaml.NewDecoder(resp.Body)
|
|
err = yamlDecoder.Decode(&dockerCompose)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return dockerCompose, nil
|
|
}
|
|
|
|
func readDockerComposeFromFile(name string) (*dockerCompose.Config, error) {
|
|
fileStat, err := os.Stat(name)
|
|
switch {
|
|
case errors.Is(err, os.ErrNotExist):
|
|
return nil, err
|
|
case fileStat.IsDir():
|
|
return nil, fmt.Errorf("%w: %s", ErrorPathIsDir, name)
|
|
}
|
|
|
|
file, err := os.Open(name)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer file.Close()
|
|
|
|
dockerCompose := dockerCompose.NewConfig()
|
|
|
|
yamlDecoder := yaml.NewDecoder(file)
|
|
err = yamlDecoder.Decode(&dockerCompose)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return dockerCompose, nil
|
|
}
|