// FetchConfig reads the specified file from the SourceRepository and loads the
// TaskConfig contained therein (expecting it to be YAML format).
//
// The path must be in the format SOURCE_NAME/FILE/PATH.yml. The SOURCE_NAME
// will be used to determine the ArtifactSource in the SourceRepository to
// stream the file out of.
//
// If the source name is missing (i.e. if the path is just "foo.yml"),
// UnspecifiedArtifactSourceError is returned.
//
// If the specified source name cannot be found, UnknownArtifactSourceError is
// returned.
//
// If the task config file is not found, or is invalid YAML, or is an invalid
// task configuration, the respective errors will be bubbled up.
func (configSource FileConfigSource) FetchConfig(repo *SourceRepository) (atc.TaskConfig, error) {
segs := strings.SplitN(configSource.Path, "/", 2)
if len(segs) != 2 {
return atc.TaskConfig{}, UnspecifiedArtifactSourceError{configSource.Path}
}
sourceName := SourceName(segs[0])
filePath := segs[1]
source, found := repo.SourceFor(sourceName)
if !found {
return atc.TaskConfig{}, UnknownArtifactSourceError{sourceName}
}
stream, err := source.StreamFile(filePath)
if err != nil {
return atc.TaskConfig{}, err
}
defer stream.Close()
streamedFile, err := ioutil.ReadAll(stream)
if err != nil {
return atc.TaskConfig{}, err
}
config, err := atc.LoadTaskConfig(streamedFile)
if err != nil {
return atc.TaskConfig{}, fmt.Errorf("failed to load %s: %s", configSource.Path, err)
}
return config, nil
}
func LoadTaskConfig(configPath string, args []string) (atc.TaskConfig, error) {
configFile, err := ioutil.ReadFile(configPath)
if err != nil {
return atc.TaskConfig{}, fmt.Errorf("failed to read task config: %s", err)
}
config, err := atc.LoadTaskConfig(configFile)
if err != nil {
return atc.TaskConfig{}, err
}
config.Run.Args = append(config.Run.Args, args...)
for k, _ := range config.Params {
env, found := syscall.Getenv(k)
if found {
config.Params[k] = env
}
}
return config, nil
}