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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"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/mongo"
)
type operation struct {
Name string `bson:"name"`
Object string `bson:"object"`
Arguments bson.Raw `bson:"arguments"`
IgnoreResultAndError bool `bson:"ignoreResultAndError"`
ExpectedError *expectedError `bson:"expectError"`
ExpectedResult *bson.RawValue `bson:"expectResult"`
ResultEntityID *string `bson:"saveResultAsEntity"`
}
// execute runs the operation and verifies the returned result and/or error. If the result needs to be saved as
// an entity, it also updates the entityMap associated with ctx to do so.
func (op *operation) execute(ctx context.Context, loopDone <-chan struct{}) error {
res, err := op.run(ctx, loopDone)
if err != nil {
return fmt.Errorf("execution failed: %v", err)
}
if op.IgnoreResultAndError {
return nil
}
if err := verifyOperationError(ctx, op.ExpectedError, res); err != nil {
return fmt.Errorf("error verification failed: %v", err)
}
if op.ExpectedResult != nil {
if err := verifyOperationResult(ctx, *op.ExpectedResult, res); err != nil {
return fmt.Errorf("result verification failed: %v", err)
}
}
return nil
}
func (op *operation) run(ctx context.Context, loopDone <-chan struct{}) (*operationResult, error) {
if op.Object == "testRunner" {
// testRunner operations don't have results or expected errors, so we use newEmptyResult to fake a result.
return newEmptyResult(), executeTestRunnerOperation(ctx, op, loopDone)
}
// Special handling for the "session" field because it applies to all operations.
if id, ok := op.Arguments.Lookup("session").StringValueOK(); ok {
sess, err := entities(ctx).session(id)
if err != nil {
return nil, err
}
ctx = mongo.NewSessionContext(ctx, sess)
// Set op.Arguments to a new document that has the "session" field removed so individual operations do
// not have to account for it.
op.Arguments = removeFieldsFromDocument(op.Arguments, "session")
}
switch op.Name {
// Session operations
case "abortTransaction":
return executeAbortTransaction(ctx, op)
case "commitTransaction":
return executeCommitTransaction(ctx, op)
case "endSession":
// The EndSession() method doesn't return a result, so we return a non-nil empty result.
return newEmptyResult(), executeEndSession(ctx, op)
case "startTransaction":
return executeStartTransaction(ctx, op)
case "withTransaction":
// executeWithTransaction internally verifies results/errors for each operation, so it doesn't return a result.
return newEmptyResult(), executeWithTransaction(ctx, op, loopDone)
// Client operations
case "createChangeStream":
return executeCreateChangeStream(ctx, op)
case "listDatabases":
return executeListDatabases(ctx, op)
// Database operations
case "createCollection":
return executeCreateCollection(ctx, op)
case "dropCollection":
return executeDropCollection(ctx, op)
case "listCollections":
return executeListCollections(ctx, op)
case "listCollectionNames":
return executeListCollectionNames(ctx, op)
case "runCommand":
return executeRunCommand(ctx, op)
// Collection operations
case "aggregate":
return executeAggregate(ctx, op)
case "bulkWrite":
return executeBulkWrite(ctx, op)
case "countDocuments":
return executeCountDocuments(ctx, op)
case "createIndex":
return executeCreateIndex(ctx, op)
case "createFindCursor":
return executeCreateFindCursor(ctx, op)
case "deleteOne":
return executeDeleteOne(ctx, op)
case "deleteMany":
return executeDeleteMany(ctx, op)
case "distinct":
return executeDistinct(ctx, op)
case "estimatedDocumentCount":
return executeEstimatedDocumentCount(ctx, op)
case "find":
return executeFind(ctx, op)
case "findOneAndDelete":
return executeFindOneAndDelete(ctx, op)
case "findOneAndReplace":
return executeFindOneAndReplace(ctx, op)
case "findOneAndUpdate":
return executeFindOneAndUpdate(ctx, op)
case "insertMany":
return executeInsertMany(ctx, op)
case "insertOne":
return executeInsertOne(ctx, op)
case "listIndexes":
return executeListIndexes(ctx, op)
case "replaceOne":
return executeReplaceOne(ctx, op)
case "updateOne":
return executeUpdateOne(ctx, op)
case "updateMany":
return executeUpdateMany(ctx, op)
// GridFS operations
case "delete":
return executeBucketDelete(ctx, op)
case "download":
return executeBucketDownload(ctx, op)
case "upload":
return executeBucketUpload(ctx, op)
// Cursor operations
case "close":
return newEmptyResult(), executeClose(ctx, op)
case "iterateUntilDocumentOrError":
return executeIterateUntilDocumentOrError(ctx, op)
default:
return nil, fmt.Errorf("unrecognized entity operation %q", op.Name)
}
}
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