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// Copyright (C) MongoDB, Inc. 2017-present.
//
// 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
package unified
import (
"context"
"fmt"
"time"
"go.mongodb.org/mongo-driver/bson/primitive"
testhelpers "go.mongodb.org/mongo-driver/internal/testutil/helpers"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
"go.mongodb.org/mongo-driver/x/bsonx/bsoncore"
)
// This file contains helpers to execute client operations.
func executeCreateChangeStream(ctx context.Context, operation *operation) (*operationResult, error) {
var watcher interface {
Watch(context.Context, interface{}, ...*options.ChangeStreamOptions) (*mongo.ChangeStream, error)
}
var err error
watcher, err = entities(ctx).client(operation.Object)
if err != nil {
watcher, err = entities(ctx).database(operation.Object)
}
if err != nil {
watcher, err = entities(ctx).collection(operation.Object)
}
if err != nil {
return nil, fmt.Errorf("no client, database, or collection entity found with ID %q", operation.Object)
}
var pipeline []interface{}
opts := options.ChangeStream()
elems, _ := operation.Arguments.Elements()
for _, elem := range elems {
key := elem.Key()
val := elem.Value()
switch key {
case "batchSize":
opts.SetBatchSize(val.Int32())
case "collation":
collation, err := createCollation(val.Document())
if err != nil {
return nil, fmt.Errorf("error creating collation: %v", err)
}
opts.SetCollation(*collation)
case "fullDocument":
switch fd := val.StringValue(); fd {
case "default":
opts.SetFullDocument(options.Default)
case "updateLookup":
opts.SetFullDocument(options.UpdateLookup)
default:
return nil, fmt.Errorf("unrecognized fullDocument value %q", fd)
}
case "maxAwaitTimeMS":
opts.SetMaxAwaitTime(time.Duration(val.Int32()) * time.Millisecond)
case "pipeline":
pipeline = testhelpers.RawToInterfaceSlice(val.Array())
case "resumeAfter":
opts.SetResumeAfter(val.Document())
case "startAfter":
opts.SetStartAfter(val.Document())
case "startAtOperationTime":
t, i := val.Timestamp()
opts.SetStartAtOperationTime(&primitive.Timestamp{T: t, I: i})
default:
return nil, fmt.Errorf("unrecognized createChangeStream option %q", key)
}
}
if pipeline == nil {
return nil, newMissingArgumentError("pipeline")
}
stream, err := watcher.Watch(ctx, pipeline, opts)
if err != nil {
return newErrorResult(err), nil
}
if operation.ResultEntityID == nil {
return nil, fmt.Errorf("no entity name provided to store executeChangeStream result")
}
if err := entities(ctx).addCursorEntity(*operation.ResultEntityID, stream); err != nil {
return nil, fmt.Errorf("error storing result as cursor entity: %v", err)
}
return newEmptyResult(), nil
}
func executeListDatabases(ctx context.Context, operation *operation) (*operationResult, error) {
client, err := entities(ctx).client(operation.Object)
if err != nil {
return nil, err
}
// We set a default filter rather than erroring if the Arguments doc doesn't have a "filter" field because the
// spec says drivers should support this field, not must.
filter := emptyDocument
opts := options.ListDatabases()
elems, _ := operation.Arguments.Elements()
for _, elem := range elems {
key := elem.Key()
val := elem.Value()
switch key {
case "authorizedDatabases":
opts.SetAuthorizedDatabases(val.Boolean())
case "filter":
filter = val.Document()
case "nameOnly":
opts.SetNameOnly(val.Boolean())
default:
return nil, fmt.Errorf("unrecognized listDatabases option %q", key)
}
}
res, err := client.ListDatabases(ctx, filter, opts)
if err != nil {
return newErrorResult(err), nil
}
specsArray := bsoncore.NewArrayBuilder()
for _, spec := range res.Databases {
rawSpec := bsoncore.NewDocumentBuilder().
AppendString("name", spec.Name).
AppendInt64("sizeOnDisk", spec.SizeOnDisk).
AppendBoolean("empty", spec.Empty).
Build()
specsArray.AppendDocument(rawSpec)
}
raw := bsoncore.NewDocumentBuilder().
AppendArray("databases", specsArray.Build()).
AppendInt64("totalSize", res.TotalSize).
Build()
return newDocumentResult(raw, nil), nil
}
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