# Copyright (C) 2021-present MongoDB, Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the Server Side Public License, version 1,
# as published by MongoDB, Inc.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# Server Side Public License for more details.
#
# You should have received a copy of the Server Side Public License
# along with this program. If not, see
# <http://www.mongodb.com/licensing/server-side-public-license>.
#
# As a special exception, the copyright holders give permission to link the
# code of portions of this program with the OpenSSL library under certain
# conditions as described in each individual source file and distribute
# linked combinations including the program with the OpenSSL library. You
# must comply with the Server Side Public License in all respects for
# all of the code used other than as permitted herein. If you modify file(s)
# with this exception, you may extend this exception to your version of the
# file(s), but you are not obligated to do so. If you do not wish to do so,
# delete this exception statement from your version. If you delete this
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global:
    cpp_namespace: "mongo"

imports:
    - "mongo/db/auth/auth_types.idl"
    - "mongo/db/repl/replication_types.idl"
    - "mongo/db/write_concern_options.idl"
    - "mongo/idl/basic_types.idl"
    - "mongo/rpc/metadata/client_metadata.idl"
    - "mongo/rpc/topology_version.idl"

structs:
    HelloInternalClientField:
        description: "Specifies min/max wire protocol versions"
        strict: true
        fields:
            minWireVersion:
                # Currently ignored
                type: safeInt
                default: 0
                unstable: false
            maxWireVersion:
                type: safeInt
                unstable: false

    HelloLastWrite:
        description: "Most recent op/write times for this node"
        strict: true
        fields:
            opTime:
                type: optime
                optional: true
                unstable: false
            lastWriteDate:
                type: date
                optional: true
                unstable: false
            majorityOpTime:
                type: optime
                optional: true
                unstable: false
            majorityWriteDate:
                type: date
                optional: true
                unstable: false

    HelloCommandReply:
        description: "Reply to 'hello' command"
        strict: true
        fields:
            helloOk:
                type: bool
                default: true
                unstable: false
            clientSupportsHello:
                type: bool
                optional: true
                unstable: false
            configsvr:
                type: safeInt
                optional: true
                unstable: false
            maxBsonObjectSize:
                type: safeInt64
                optional: true
                unstable: false
            maxMessageSizeBytes:
                type: safeInt64
                optional: true
                unstable: false
            maxWriteBatchSize:
                type: safeInt64
                optional: true
                unstable: false
            localTime:
                type: date
                optional: true
                unstable: false
            logicalSessionTimeoutMinutes:
                type: safeInt
                optional: true
                unstable: false
            connectionId:
                type: safeInt64
                optional: true
                unstable: false
            minWireVersion:
                type: safeInt
                optional: true
                unstable: false
            maxWireVersion:
                type: safeInt
                optional: true
                unstable: false
            readOnly:
                type: bool
                optional: true
                unstable: false
            compression:
                type: array<string>
                optional: true
                unstable: false
            automationServiceDescriptor:
                type: string
                optional: true
                unstable: false
            saslSupportedMechs:
                type: array<string>
                optional: true
                unstable: false
            speculativeAuthenticate:
                type: object
                optional: true
                unstable: false
            msg:
                type: string
                optional: true
                unstable: false
            serviceId:
                type: objectid
                optional: true
                unstable: false
            ##
            ## ReplicationInfo
            ##
            topologyVersion:
                type: TopologyVersion
                unstable: false
            ismaster:
                # Replies will contain 'ismaster' OR 'isWritablePrimary', not both
                type: bool
                optional: true
                unstable: false
            isWritablePrimary:
                type: bool
                optional: true
                unstable: false
            ##
            ## Using ReplSets
            ##
            hosts:
                type: array<string>
                optional: true
                unstable: false
            passives:
                type: array<string>
                optional: true
                unstable: false
            arbiters:
                type: array<string>
                optional: true
                unstable: false
            setName:
                type: string
                optional: true
                unstable: false
            primary:
                type: string
                optional: true
                unstable: false
            secondary:
                type: bool
                optional: true
                unstable: false
            info:
                type: string
                optional: true
                unstable: false
            isreplicaset:
                type: bool
                optional: true
                unstable: false
            setVersion:
                type: safeInt
                optional: true
                unstable: false
            arbiterOnly:
                type: bool
                optional: true
                unstable: false
            passive:
                type: bool
                optional: true
                unstable: false
            hidden:
                type: bool
                optional: true
                unstable: false
            buildIndexes:
                type: bool
                optional: true
                unstable: false
            slaveDelay:
                # Reply will contain either slaveDelay or secondaryDelaySecs, but not both.
                type: safeInt64
                optional: true
                unstable: false
            secondaryDelaySecs:
                type: safeInt64
                optional: true
                unstable: false
            tags:
                type: object
                optional: true
                unstable: false
            me:
                type: string
                optional: true
                unstable: false
            electionId:
                type: objectid
                optional: true
                unstable: false
            lastWrite:
                type: HelloLastWrite
                optional: true
                unstable: false
            isImplicitDefaultMajorityWC:
                # Only populated on shard server.
                type: bool
                optional: true
                unstable: false
            cwwc:
                # Only populated on shard server.
                type: WriteConcern
                optional: true
                unstable: false

commands:
    hello:
        # Aliases: 'isMaster', 'ismaster'
        description: "Check if this server is primary for a replica set { hello: 1 }"
        command_name: hello
        namespace: ignored
        cpp_name: HelloCommand
        api_version: "1"
        access_check:
            none: true
        reply_type: HelloCommandReply
        # Most V1 commands should be strict: true but hello is special to allow for unknown fields.
        strict: false
        fields:
            forShell:
                type: safeBool
                default: false
                unstable: false
            hostInfo:
                type: string
                default: false
                unstable: false
            hangUpOnStepDown:
                type: safeBool
                default: true
                unstable: false
            internalClient:
                type: HelloInternalClientField
                optional: true
                unstable: false
            client:
                type: ClientMetadata
                optional: true
                unstable: false
            topologyVersion:
                type: TopologyVersion
                optional: true
                unstable: false
            maxAwaitTimeMS:
                type: safeInt64
                optional: true
                validator: { gte: 0 }
                unstable: false
            helloOk:
                type: safeBool
                optional: true
                unstable: false
            compression:
                type: array<string>
                optional: true
                unstable: false
            saslSupportedMechs:
                type: 
                    variant: [string, object_owned]
                optional: true
                unstable: false
            speculativeAuthenticate:
                type: object
                optional: true
                unstable: false
            loadBalanced:
                type: bool
                optional: true
                unstable: false