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submission.go
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submission.go
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package godge
import (
"encoding/json"
"fmt"
)
// Submission is the input of the user defined task tests.
type Submission struct {
id string
// The language of the submission.
Language string `json:"language"`
// The task this submission is sent to.
TaskName string `json:"taskName"`
// The username of the submitter.
Username string `json:"username"`
// The executor interface to deal with the submission.
Executor Executor `json:"submission"`
}
// UnmarshalJSON is a custom JSON unmarshaller. It's used mainly to create
// a new executor instance based on the language field of the submission.
func (s *Submission) UnmarshalJSON(d []byte) error {
metadata := struct {
Language string `json:"language"`
TaskName string `json:"taskName"`
Username string `json:"username"`
Submission json.RawMessage `json:"submission"`
}{}
err := json.Unmarshal(d, &metadata)
if err != nil {
return fmt.Errorf("failed to unmarshal metadata: %v", err)
}
s.id = randomString(20)
s.Language = metadata.Language
s.TaskName = metadata.TaskName
s.Username = metadata.Username
switch s.Language {
case "go":
var e GoExecutor
err := json.Unmarshal(metadata.Submission, &e)
if err != nil {
return fmt.Errorf("failed to unmarshal language specific json: %v", err)
}
s.Executor = &e
default:
return fmt.Errorf("unsupported language %v", s.Language)
}
return nil
}