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query_request.go
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query_request.go
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//
// Copyright © 2021 Uncharted Software Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package compute
import (
"time"
"github.com/pkg/errors"
api "github.com/uncharted-distil/distil/api/model"
"github.com/uncharted-distil/distil/api/util/json"
)
// QueryRequest defines a request to query a dataset for similar images to labelled observations.
type QueryRequest struct {
DatasetID string
Target string
Filters *api.FilterParams
requestChannel chan QueryStatus
finished chan error
}
// QueryStatus defines a query status update from a downstream autoML system
type QueryStatus struct {
Progress string `json:"progress"`
RequestID string `json:"requestId"`
ResultID string `json:"resultId"`
Error error `json:"error"`
Timestamp time.Time `json:"timestamp"`
}
// NewQueryRequest instantiates a query request from a raw byte stream.
func NewQueryRequest(data []byte) (*QueryRequest, error) {
req := &QueryRequest{
finished: make(chan error),
requestChannel: make(chan QueryStatus),
}
jsonMap, err := json.Unmarshal(data)
if err != nil {
return nil, err
}
var ok bool
// the name of the input prediction dataset
req.DatasetID, ok = json.String(jsonMap, "datasetId")
if !ok {
return nil, errors.Errorf("no `datasetId` in predict request")
}
// the target is the name of the label on which to base the query.
req.Target = json.StringDefault(jsonMap, "", "target")
filters, ok := json.Get(jsonMap, "filters")
if ok {
req.Filters, err = api.ParseFilterParamsFromJSON(filters)
if err != nil {
return nil, err
}
}
return req, nil
}