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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| package json | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
|
|
||
| "github.com/c4dt/d-voting/contracts/evoting/types" | ||
| "go.dedis.ch/dela/serde" | ||
| "golang.org/x/xerrors" | ||
| ) | ||
|
|
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| type suffragiaFormat struct{} | ||
|
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| func (suffragiaFormat) Encode(ctx serde.Context, msg serde.Message) ([]byte, error) { | ||
| switch m := msg.(type) { | ||
| case types.Suffragia: | ||
| sJson, err := encodeSuffragia(ctx, m) | ||
| if err != nil { | ||
| return nil, xerrors.Errorf("couldn't encode suffragia: %v", err) | ||
| } | ||
|
|
||
| buff, err := ctx.Marshal(&sJson) | ||
| if err != nil { | ||
| return nil, xerrors.Errorf("failed to marshal form: %v", err) | ||
| } | ||
|
|
||
| return buff, nil | ||
| default: | ||
| return nil, xerrors.Errorf("Unknown format: %T", msg) | ||
| } | ||
| } | ||
|
|
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| func (suffragiaFormat) Decode(ctx serde.Context, data []byte) (serde.Message, error) { | ||
| var sJson SuffragiaJSON | ||
|
|
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| err := ctx.Unmarshal(data, &sJson) | ||
| if err != nil { | ||
| return nil, xerrors.Errorf("failed to unmarshal form: %v", err) | ||
| } | ||
|
|
||
| return decodeSuffragia(ctx, sJson) | ||
| } | ||
|
|
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| // SuffragiaJSON defines the JSON representation of a suffragia. | ||
| type SuffragiaJSON struct { | ||
| UserIDs []string | ||
| Ciphervotes []json.RawMessage | ||
| } | ||
|
|
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| func encodeSuffragia(ctx serde.Context, suffragia types.Suffragia) (SuffragiaJSON, error) { | ||
| ciphervotes := make([]json.RawMessage, len(suffragia.Ciphervotes)) | ||
|
|
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| for i, ciphervote := range suffragia.Ciphervotes { | ||
| buff, err := ciphervote.Serialize(ctx) | ||
| if err != nil { | ||
| return SuffragiaJSON{}, xerrors.Errorf("failed to serialize ciphervote: %v", err) | ||
| } | ||
|
|
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| ciphervotes[i] = buff | ||
| } | ||
| return SuffragiaJSON{ | ||
| UserIDs: suffragia.UserIDs, | ||
| Ciphervotes: ciphervotes, | ||
| }, nil | ||
| } | ||
|
|
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| func decodeSuffragia(ctx serde.Context, suffragiaJSON SuffragiaJSON) (types.Suffragia, error) { | ||
| var res types.Suffragia | ||
| fac := ctx.GetFactory(types.CiphervoteKey{}) | ||
|
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| factory, ok := fac.(types.CiphervoteFactory) | ||
| if !ok { | ||
| return res, xerrors.Errorf("invalid ciphervote factory: '%T'", fac) | ||
| } | ||
|
|
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| ciphervotes := make([]types.Ciphervote, len(suffragiaJSON.Ciphervotes)) | ||
|
|
||
| for i, ciphervoteJSON := range suffragiaJSON.Ciphervotes { | ||
| msg, err := factory.Deserialize(ctx, ciphervoteJSON) | ||
| if err != nil { | ||
| return res, xerrors.Errorf("failed to deserialize ciphervote json: %v", err) | ||
| } | ||
|
|
||
| ciphervote, ok := msg.(types.Ciphervote) | ||
| if !ok { | ||
| return res, xerrors.Errorf("wrong type: '%T'", msg) | ||
| } | ||
|
|
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| ciphervotes[i] = ciphervote | ||
| } | ||
|
|
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| res = types.Suffragia{ | ||
| UserIDs: suffragiaJSON.UserIDs, | ||
| Ciphervotes: ciphervotes, | ||
| } | ||
|
|
||
| return res, nil | ||
| } |
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