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reuse capability registration logic from the trigger in the executabl…
…e capability
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,58 @@ | ||
| package aggregation | ||
|
|
||
| import ( | ||
| "crypto/sha256" | ||
| "encoding/hex" | ||
| "errors" | ||
| "fmt" | ||
|
|
||
| commoncap "github.com/smartcontractkit/chainlink-common/pkg/capabilities" | ||
| "github.com/smartcontractkit/chainlink-common/pkg/capabilities/pb" | ||
| remotetypes "github.com/smartcontractkit/chainlink/v2/core/capabilities/remote/types" | ||
| ) | ||
|
|
||
| // Default MODE Aggregator needs a configurable number of identical responses for aggregation to succeed | ||
| type defaultModeAggregator struct { | ||
| minIdenticalResponses uint32 | ||
| } | ||
|
|
||
| var _ remotetypes.Aggregator = &defaultModeAggregator{} | ||
|
|
||
| func NewDefaultModeAggregator(minIdenticalResponses uint32) *defaultModeAggregator { | ||
| return &defaultModeAggregator{ | ||
| minIdenticalResponses: minIdenticalResponses, | ||
| } | ||
| } | ||
|
|
||
| func (a *defaultModeAggregator) Aggregate(_ string, responses [][]byte) (commoncap.TriggerResponse, error) { | ||
| found, err := AggregateModeRaw(responses, a.minIdenticalResponses) | ||
| if err != nil { | ||
| return commoncap.TriggerResponse{}, fmt.Errorf("failed to aggregate responses, err: %w", err) | ||
| } | ||
|
|
||
| unmarshaled, err := pb.UnmarshalTriggerResponse(found) | ||
| if err != nil { | ||
| return commoncap.TriggerResponse{}, fmt.Errorf("failed to unmarshal aggregated responses, err: %w", err) | ||
| } | ||
| return unmarshaled, nil | ||
| } | ||
|
|
||
| func AggregateModeRaw(elemList [][]byte, minIdenticalResponses uint32) ([]byte, error) { | ||
| hashToCount := make(map[string]uint32) | ||
| var found []byte | ||
| for _, elem := range elemList { | ||
| hasher := sha256.New() | ||
| hasher.Write(elem) | ||
| sha := hex.EncodeToString(hasher.Sum(nil)) | ||
| hashToCount[sha]++ | ||
| if hashToCount[sha] >= minIdenticalResponses { | ||
| found = elem | ||
| // update in case we find another elem with an even higher count | ||
| minIdenticalResponses = hashToCount[sha] | ||
| } | ||
| } | ||
| if found == nil { | ||
| return nil, errors.New("not enough identical responses found") | ||
| } | ||
| return found, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| package aggregation | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
||
| "github.com/stretchr/testify/require" | ||
|
|
||
| commoncap "github.com/smartcontractkit/chainlink-common/pkg/capabilities" | ||
| "github.com/smartcontractkit/chainlink-common/pkg/capabilities/pb" | ||
| "github.com/smartcontractkit/chainlink-common/pkg/values" | ||
| ) | ||
|
|
||
| var ( | ||
| triggerEvent1 = map[string]any{"event": "triggerEvent1"} | ||
| triggerEvent2 = map[string]any{"event": "triggerEvent2"} | ||
| ) | ||
|
|
||
| func TestDefaultModeAggregator_Aggregate(t *testing.T) { | ||
| val, err := values.NewMap(triggerEvent1) | ||
| require.NoError(t, err) | ||
| capResponse1 := commoncap.TriggerResponse{ | ||
| Event: commoncap.TriggerEvent{ | ||
| Outputs: val, | ||
| }, | ||
| Err: nil, | ||
| } | ||
| marshaled1, err := pb.MarshalTriggerResponse(capResponse1) | ||
| require.NoError(t, err) | ||
|
|
||
| val2, err := values.NewMap(triggerEvent2) | ||
| require.NoError(t, err) | ||
| capResponse2 := commoncap.TriggerResponse{ | ||
| Event: commoncap.TriggerEvent{ | ||
| Outputs: val2, | ||
| }, | ||
| Err: nil, | ||
| } | ||
| marshaled2, err := pb.MarshalTriggerResponse(capResponse2) | ||
| require.NoError(t, err) | ||
|
|
||
| agg := NewDefaultModeAggregator(2) | ||
| _, err = agg.Aggregate("", [][]byte{marshaled1}) | ||
| require.Error(t, err) | ||
|
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| _, err = agg.Aggregate("", [][]byte{marshaled1, marshaled2}) | ||
| require.Error(t, err) | ||
|
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| res, err := agg.Aggregate("", [][]byte{marshaled1, marshaled2, marshaled1}) | ||
| require.NoError(t, err) | ||
| require.Equal(t, res, capResponse1) | ||
| } |
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