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// Copyright 2018 The Feast Authors
//
// 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
//
// https://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 parse
import (
"encoding/json"
"time"
"github.com/golang/protobuf/ptypes/timestamp"
"github.com/ghodss/yaml"
"github.com/gojek/feast/protos/generated/go/feast/specs"
"github.com/gojek/feast/protos/generated/go/feast/types"
)
// YamlToFeatureSpec parses the given yaml and outputs the corresponding
// feature spec, if possible.
func YamlToFeatureSpec(in []byte) (*specs.FeatureSpec, error) {
var ymlMap map[string]interface{}
err := yaml.Unmarshal(in, &ymlMap)
if err != nil {
return nil, err
}
ymlMap["valueType"] = valueTypeOf(ymlMap["valueType"].(string))
if err != nil {
return nil, err
}
yml, err := yaml.Marshal(ymlMap)
if err != nil {
return nil, err
}
j, err := yaml.YAMLToJSON(yml)
if err != nil {
return nil, err
}
var fs specs.FeatureSpec
err = json.Unmarshal(j, &fs)
return &fs, err
}
// YamlToEntitySpec parses the given yaml and returns the corresponding entity spec,
// if possible.
func YamlToEntitySpec(in []byte) (*specs.EntitySpec, error) {
j, err := yaml.YAMLToJSON(in)
if err != nil {
return nil, err
}
var es specs.EntitySpec
err = json.Unmarshal(j, &es)
return &es, err
}
// YamlToFeatureGroupSpec parses the given yaml and returns the corresponding feature
// group spec, if possible.
func YamlToFeatureGroupSpec(in []byte) (*specs.FeatureGroupSpec, error) {
j, err := yaml.YAMLToJSON(in)
if err != nil {
return nil, err
}
var fgs specs.FeatureGroupSpec
err = json.Unmarshal(j, &fgs)
return &fgs, err
}
// YamlToStorageSpec parses the given yaml and returns the corresponding
// storage spec, if possible.
func YamlToStorageSpec(in []byte) (*specs.StorageSpec, error) {
j, err := yaml.YAMLToJSON(in)
if err != nil {
return nil, err
}
var ss specs.StorageSpec
err = json.Unmarshal(j, &ss)
return &ss, err
}
// YamlToImportSpec parses the given yaml and returns the corresponding import
// spec, if possible.
func YamlToImportSpec(in []byte) (*specs.ImportSpec, error) {
var ymlMap map[string]interface{}
err := yaml.Unmarshal(in, &ymlMap)
if err != nil {
return nil, err
}
// either timestampValue or timestampColumn
var timestampValue *timestamp.Timestamp
var timestampColumn string
if ymlMap["schema"] != nil {
schemaYmlMap := ymlMap["schema"].(map[string]interface{})
if ts, ok := schemaYmlMap["timestampValue"]; ok {
t, err := time.Parse("2006-01-02T15:04:05.000Z", ts.(string))
if err != nil {
return nil, err
}
timestampValue = ×tamp.Timestamp{Seconds: t.Unix()}
}
if ts, ok := schemaYmlMap["timestampColumn"]; ok {
timestampColumn = ts.(string)
}
if err != nil {
return nil, err
}
}
j, err := yaml.YAMLToJSON(in)
if err != nil {
return nil, err
}
var is specs.ImportSpec
err = json.Unmarshal(j, &is)
if timestampValue != nil {
is.Schema.Timestamp = &specs.Schema_TimestampValue{TimestampValue: timestampValue}
} else if timestampColumn != "" {
is.Schema.Timestamp = &specs.Schema_TimestampColumn{TimestampColumn: timestampColumn}
}
return &is, err
}
func valueTypeOf(str string) types.ValueType_Enum {
return types.ValueType_Enum(types.ValueType_Enum_value[str])
}