elemMatch-to-mongocryptd.js

/* Run this file with the legacy mongo shell to mongocryptd. Example:
   mongo --port 27020 ./elemMatch-to-mongocryptd.js */
var schema =
{
    encryptMetadata: {
        "keyId": [UUID()]
    },
    properties: {
        name: {
            encrypt: {
                bsonType: 'string',
                algorithm: 'AEAD_AES_256_CBC_HMAC_SHA_512-Deterministic'
            }
        },
        motherName: {
            encrypt: {
                bsonType: 'string',
                algorithm: 'AEAD_AES_256_CBC_HMAC_SHA_512-Deterministic'
            }
        }
    },
    'bsonType': 'object'
}

var cmd = {
    "find": "coll",
    "filter": {
        "bars": {
            "$elemMatch": {
                "name": "SuperA"
            }
        }
    },
    "jsonSchema": schema,
    "isRemoteSchema": false
}

print("sending command to mongocryptd:")
printjson(cmd)

var got = db.runCommand(cmd);
print("got response from mongocryptd:")
printjson(got)

// "bars" is not an encrypted field. Do not expect "SuperA" to be encrypted.
assert(got.result.filter.bars.$elemMatch.name.$eq == "SuperA")

/* Sample output:
sending command to mongocryptd:
{
        "find" : "coll",
        "filter" : {
                "bars" : {
                        "$elemMatch" : {
                                "name" : "SuperA"
                        }
                }
        },
        "jsonSchema" : {
                "encryptMetadata" : {
                        "keyId" : [
                                UUID("841f6caf-bed1-44cc-b79e-5ec89aeaa386")
                        ]
                },
                "properties" : {
                        "name" : {
                                "encrypt" : {
                                        "bsonType" : "string",
                                        "algorithm" : "AEAD_AES_256_CBC_HMAC_SHA_512-Deterministic"
                                }
                        },
                        "motherName" : {
                                "encrypt" : {
                                        "bsonType" : "string",
                                        "algorithm" : "AEAD_AES_256_CBC_HMAC_SHA_512-Deterministic"
                                }
                        }
                },
                "bsonType" : "object"
        },
        "isRemoteSchema" : false
}
got response from mongocryptd:
{
        "hasEncryptionPlaceholders" : true,
        "schemaRequiresEncryption" : true,
        "result" : {
                "find" : "coll",
                "filter" : {
                        "bars" : {
                                "$elemMatch" : {
                                        "name" : {
                                                "$eq" : BinData(6,"ADMAAAAQYQABAAAABWtpABAAAAAEhB9sr77RRMy3nl7ImuqjhgJ2AAcAAABTdXBlckEAAA==")
                                        }
                                }
                        }
                },
                "lsid" : {
                        "id" : UUID("46bc4bbe-7132-45b3-8a7e-0af1ea12b46e")
                }
        },
        "ok" : 1
}
uncaught exception: Error: assert failed :
doassert@src/mongo/shell/assert.js:20:14
assert@src/mongo/shell/assert.js:151:9
@elemMatch-to-mongocryptd.js:48:1
failed to load: elemMatch-to-mongocryptd.js
exiting with code -3
*/