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// _ _
// __ _____ __ ___ ___ __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
// \ V V / __/ (_| |\ V /| | (_| | || __/
// \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
// Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
// CONTACT: [email protected]
//
package modqna
import (
"context"
"net/http"
"os"
"time"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/weaviate/weaviate/entities/modulecapabilities"
"github.com/weaviate/weaviate/entities/moduletools"
qnaadditional "github.com/weaviate/weaviate/modules/qna-transformers/additional"
qnaadditionalanswer "github.com/weaviate/weaviate/modules/qna-transformers/additional/answer"
qnaask "github.com/weaviate/weaviate/modules/qna-transformers/ask"
"github.com/weaviate/weaviate/modules/qna-transformers/clients"
qnaadependency "github.com/weaviate/weaviate/modules/qna-transformers/dependency"
"github.com/weaviate/weaviate/modules/qna-transformers/ent"
)
func New() *QnAModule {
return &QnAModule{}
}
type QnAModule struct {
qna qnaClient
graphqlProvider modulecapabilities.GraphQLArguments
searcher modulecapabilities.DependencySearcher
additionalPropertiesProvider modulecapabilities.AdditionalProperties
nearTextDependencies []modulecapabilities.Dependency
askTextTransformer modulecapabilities.TextTransform
}
type qnaClient interface {
Answer(ctx context.Context,
text, question string) (*ent.AnswerResult, error)
MetaInfo() (map[string]interface{}, error)
}
func (m *QnAModule) Name() string {
return "qna-transformers"
}
func (m *QnAModule) Type() modulecapabilities.ModuleType {
return modulecapabilities.Text2TextQnA
}
func (m *QnAModule) Init(ctx context.Context,
params moduletools.ModuleInitParams,
) error {
if err := m.initAdditional(ctx, params.GetConfig().ModuleHttpClientTimeout, params.GetLogger()); err != nil {
return errors.Wrap(err, "init vectorizer")
}
return nil
}
func (m *QnAModule) InitExtension(modules []modulecapabilities.Module) error {
var textTransformer modulecapabilities.TextTransform
for _, module := range modules {
if module.Name() == m.Name() {
continue
}
if arg, ok := module.(modulecapabilities.TextTransformers); ok {
if arg != nil && arg.TextTransformers() != nil {
textTransformer = arg.TextTransformers()["ask"]
}
}
}
m.askTextTransformer = textTransformer
if err := m.initAskProvider(); err != nil {
return errors.Wrap(err, "init ask provider")
}
return nil
}
func (m *QnAModule) InitDependency(modules []modulecapabilities.Module) error {
nearTextDependencies := []modulecapabilities.Dependency{}
for _, module := range modules {
if module.Name() == m.Name() {
continue
}
var argument modulecapabilities.GraphQLArgument
var searcher modulecapabilities.VectorForParams
if arg, ok := module.(modulecapabilities.GraphQLArguments); ok {
if arg != nil && arg.Arguments() != nil {
if nearTextArg, ok := arg.Arguments()["nearText"]; ok {
argument = nearTextArg
}
}
}
if arg, ok := module.(modulecapabilities.Searcher); ok {
if arg != nil && arg.VectorSearches() != nil {
if nearTextSearcher, ok := arg.VectorSearches()["nearText"]; ok {
searcher = nearTextSearcher
}
}
}
if argument.ExtractFunction != nil && searcher != nil {
nearTextDependency := qnaadependency.New(module.Name(), argument, searcher)
nearTextDependencies = append(nearTextDependencies, nearTextDependency)
}
}
if len(nearTextDependencies) == 0 {
return errors.New("nearText dependecy not present")
}
m.nearTextDependencies = nearTextDependencies
if err := m.initAskSearcher(); err != nil {
return errors.Wrap(err, "init ask searcher")
}
return nil
}
func (m *QnAModule) initAdditional(ctx context.Context, timeout time.Duration,
logger logrus.FieldLogger,
) error {
// TODO: proper config management
uri := os.Getenv("QNA_INFERENCE_API")
if uri == "" {
return errors.Errorf("required variable QNA_INFERENCE_API is not set")
}
client := clients.New(uri, timeout, logger)
if err := client.WaitForStartup(ctx, 1*time.Second); err != nil {
return errors.Wrap(err, "init remote vectorizer")
}
m.qna = client
answerProvider := qnaadditionalanswer.New(m.qna, qnaask.NewParamsHelper())
m.additionalPropertiesProvider = qnaadditional.New(answerProvider)
return nil
}
func (m *QnAModule) RootHandler() http.Handler {
// TODO: remove once this is a capability interface
return nil
}
func (m *QnAModule) MetaInfo() (map[string]interface{}, error) {
return m.qna.MetaInfo()
}
func (m *QnAModule) AdditionalProperties() map[string]modulecapabilities.AdditionalProperty {
return m.additionalPropertiesProvider.AdditionalProperties()
}
// verify we implement the modules.Module interface
var (
_ = modulecapabilities.Module(New())
_ = modulecapabilities.AdditionalProperties(New())
_ = modulecapabilities.MetaProvider(New())
)
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