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Merge pull request #76 from nitrictech/feature/document-service
Feature/document service
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,171 @@ | ||
| // Copyright 2021 Nitric Pty Ltd. | ||
| // | ||
| // 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 grpc | ||
|
|
||
| import ( | ||
| "context" | ||
| pb "github.com/nitric-dev/membrane/interfaces/nitric/v1" | ||
| "github.com/nitric-dev/membrane/sdk" | ||
| "google.golang.org/protobuf/types/known/structpb" | ||
| ) | ||
|
|
||
| // DocumentServer - GRPC Interface for registered Nitric Document Plugin | ||
| type DocumentServer struct { | ||
| pb.UnimplementedDocumentServiceServer | ||
| // TODO: Support multiple plugin registrations | ||
| // Just need to settle on a way of addressing them on calls | ||
| documentPlugin sdk.DocumentService | ||
| } | ||
|
|
||
| func (s *DocumentServer) Set(ctx context.Context, req *pb.DocumentSetRequest) (*pb.DocumentSetResponse, error) { | ||
| key := keyFromWire(req.Key) | ||
|
|
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| err := s.documentPlugin.Set(key, req.GetContent().AsMap()) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| return &pb.DocumentSetResponse{}, nil | ||
| } | ||
|
|
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| func (s *DocumentServer) Get(ctx context.Context, req *pb.DocumentGetRequest) (*pb.DocumentGetResponse, error) { | ||
| key := keyFromWire(req.Key) | ||
|
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| doc, err := s.documentPlugin.Get(key) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| pbDoc, err := documentToWire(doc) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| return &pb.DocumentGetResponse{ | ||
| Document: pbDoc, | ||
| }, nil | ||
| } | ||
|
|
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| func (s *DocumentServer) Delete(ctx context.Context, req *pb.DocumentDeleteRequest) (*pb.DocumentDeleteResponse, error) { | ||
| key := keyFromWire(req.Key) | ||
|
|
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| err := s.documentPlugin.Delete(key) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| return &pb.DocumentDeleteResponse{}, nil | ||
| } | ||
|
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| func (s *DocumentServer) Query(ctx context.Context, req *pb.DocumentQueryRequest) (*pb.DocumentQueryResponse, error) { | ||
| collection := collectionFromWire(req.Collection) | ||
| expressions := make([]sdk.QueryExpression, len(req.GetExpressions())) | ||
| for i, exp := range req.GetExpressions() { | ||
| expressions[i] = sdk.QueryExpression{ | ||
| Operand: exp.GetOperand(), | ||
| Operator: exp.GetOperator(), | ||
| Value: toExpValue(exp.GetValue()), | ||
| } | ||
| } | ||
| limit := int(req.GetLimit()) | ||
| pagingMap := req.GetPagingToken() | ||
|
|
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| qr, err := s.documentPlugin.Query(collection, expressions, limit, pagingMap) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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| pbDocuments := make([]*pb.Document, len(qr.Documents)) | ||
| for _, doc := range qr.Documents { | ||
| pbDoc, err := documentToWire(&doc) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| pbDocuments = append(pbDocuments, pbDoc) | ||
| } | ||
|
|
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| return &pb.DocumentQueryResponse{ | ||
| Documents: pbDocuments, | ||
| PagingToken: qr.PagingToken, | ||
| }, nil | ||
| } | ||
|
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| func NewDocumentServer(docPlugin sdk.DocumentService) pb.DocumentServiceServer { | ||
| return &DocumentServer{ | ||
| documentPlugin: docPlugin, | ||
| } | ||
| } | ||
|
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| func documentToWire(doc *sdk.Document) (*pb.Document, error) { | ||
| valStruct, err := structpb.NewStruct(doc.Content) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| return &pb.Document{ | ||
| Content: valStruct, | ||
| }, nil | ||
| } | ||
|
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| // keyFromWire - returns an Membrane SDK Document Key from the protobuf wire representation | ||
| // recursively calls collectionFromWire for the document's collection and parents if present | ||
| func keyFromWire(key *pb.Key) *sdk.Key { | ||
| if key == nil { | ||
| return nil | ||
| } | ||
|
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| sdkKey := &sdk.Key{ | ||
| Collection: collectionFromWire(key.GetCollection()), | ||
| Id: key.GetId(), | ||
| } | ||
|
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| return sdkKey | ||
| } | ||
|
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| // collectionFromWire - returns an Membrane SDK Document Collection from the protobuf wire representation | ||
| // recursively calls keyFromWire if the collection is a sub-collection under another key | ||
| func collectionFromWire(coll *pb.Collection) *sdk.Collection { | ||
| if coll == nil { | ||
| return nil | ||
| } | ||
|
|
||
| if coll.Parent == nil { | ||
| return &sdk.Collection{ | ||
| Name: coll.Name, | ||
| } | ||
| } else { | ||
| return &sdk.Collection{ | ||
| Name: coll.Name, | ||
| Parent: keyFromWire(coll.Parent), | ||
| } | ||
| } | ||
| } | ||
|
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| func toExpValue(x *pb.ExpressionValue) interface{} { | ||
| if x, ok := x.GetKind().(*pb.ExpressionValue_IntValue); ok { | ||
| return x.IntValue | ||
| } | ||
| if x, ok := x.GetKind().(*pb.ExpressionValue_DoubleValue); ok { | ||
| return x.DoubleValue | ||
| } | ||
| if x, ok := x.GetKind().(*pb.ExpressionValue_StringValue); ok { | ||
| return x.StringValue | ||
| } | ||
| if x, ok := x.GetKind().(*pb.ExpressionValue_BoolValue); ok { | ||
| return x.BoolValue | ||
| } | ||
| return nil | ||
| } |
Submodule contracts
updated
from 626788 to 17e72d
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