rustfs/crates/ecstore/src/api/mod.rs

// Copyright 2024 RustFS Team
//
// 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.

//! Explicit ECStore public facades for outer crate compatibility boundaries.

pub mod admin {
    pub use crate::diagnostics::admin_server_info::{get_local_server_property, get_server_info};
}

pub mod bitrot {
    pub use crate::io_support::bitrot::{create_bitrot_reader, create_bitrot_writer};
}

pub mod bucket {
    pub mod bandwidth {
        pub mod monitor {
            pub use crate::bucket::bandwidth::monitor::{BandwidthDetails, Monitor};
        }
    }

    pub mod bucket_target_sys {
        pub use crate::bucket::bucket_target_sys::{
            AdvancedPutOptions, BucketTargetError, BucketTargetSys, PutObjectOptions, RemoveObjectOptions, S3ClientError,
            TargetClient,
        };
    }

    pub mod lifecycle {
        pub mod bucket_lifecycle_audit {
            pub use crate::bucket::lifecycle::bucket_lifecycle_audit::LcEventSrc;
        }

        pub mod bucket_lifecycle_ops {
            pub use crate::bucket::lifecycle::bucket_lifecycle_ops::{
                ExpiryState, LifecycleOps, ManualTransitionCancelCheck, ManualTransitionProgressSink,
                ManualTransitionQueueSnapshot, ManualTransitionRunExecution, ManualTransitionRunOptions,
                ManualTransitionRunReport, RestoreRequestOps, TransitionState, TransitionedObject, apply_expiry_rule,
                apply_transition_rule, enqueue_expiry_for_existing_objects, enqueue_transition_for_existing_objects,
                enqueue_transition_for_existing_objects_scoped, enqueue_transition_for_existing_objects_scoped_with_cancel,
                enqueue_transition_immediate, expire_transitioned_object, get_global_expiry_state, get_global_transition_state,
                init_background_expiry, manual_transition_queue_snapshot, post_restore_opts,
                run_stale_multipart_upload_cleanup_once, validate_transition_tier,
            };
        }

        pub mod manual_transition_job {
            pub use crate::bucket::lifecycle::manual_transition_job::{
                ManualTransitionJobRecord, ManualTransitionJobState, ManualTransitionScopeAdmission,
                ManualTransitionScopeAdmissionClaim, claim_manual_transition_scope_admission,
                delete_manual_transition_scope_admission_if_current, load_manual_transition_job_record,
                load_manual_transition_job_record_with_etag, load_manual_transition_scope_admission,
                manual_transition_job_lease_expired, manual_transition_scope_admission_lease_expired,
                manual_transition_scope_key, persist_manual_transition_job_progress, renew_manual_transition_job_lease,
                request_manual_transition_job_cancel, save_manual_transition_job_record,
                save_manual_transition_job_record_if_current, save_manual_transition_scope_admission_if_absent,
            };
        }

        pub mod transition_transaction {
            pub use crate::bucket::lifecycle::transition_transaction::{
                TransitionOperatorDeleteResult, TransitionOperatorError, TransitionOperatorProbe, TransitionOperatorStatus,
                delete_transition_candidate_for_operator, finalize_missing_transition_transaction_for_operator,
                inspect_transition_transaction_for_operator,
            };
        }

        pub mod evaluator {
            pub use crate::bucket::lifecycle::evaluator::Evaluator;
        }

        #[allow(clippy::module_inception)]
        pub mod lifecycle {
            pub use crate::bucket::lifecycle::lifecycle::{
                Event, ExpirationOptions, IlmAction, Lifecycle, LifecycleCalculate, ObjectOpts, RuleValidate,
                TRANSITION_COMPLETE, TRANSITION_PENDING, TransitionOptions, expected_expiry_time, object_opts_from_object_info,
            };
        }

        pub mod rule {
            pub use crate::bucket::lifecycle::rule::{Filter, NoncurrentVersionTransitionOps, TransitionOps};
        }

        pub mod tier_delete_journal {
            #[cfg(feature = "test-util")]
            pub use crate::bucket::lifecycle::tier_delete_journal::recover_tier_delete_journal_entries;
            pub use crate::bucket::lifecycle::tier_delete_journal::{
                persist_tier_delete_journal_entry, record_tier_delete_journal_backend_identity,
            };
        }

        pub mod tier_last_day_stats {
            pub use crate::bucket::lifecycle::tier_last_day_stats::{DailyAllTierStats, LastDayTierStats};
        }

        pub mod tier_sweeper {
            pub use crate::bucket::lifecycle::tier_sweeper::{
                Jentry, transitioned_delete_journal_entry, transitioned_force_delete_journal_entry,
            };
        }
    }

    pub mod metadata {
        pub use crate::bucket::metadata::BUCKET_DURABILITY_CONFIG;
        pub use crate::bucket::metadata::{
            BUCKET_ACCELERATE_CONFIG, BUCKET_CORS_CONFIG, BUCKET_LIFECYCLE_CONFIG, BUCKET_LOGGING_CONFIG,
            BUCKET_NOTIFICATION_CONFIG, BUCKET_POLICY_CONFIG, BUCKET_PUBLIC_ACCESS_BLOCK_CONFIG, BUCKET_QUOTA_CONFIG_FILE,
            BUCKET_REPLICATION_CONFIG, BUCKET_REQUEST_PAYMENT_CONFIG, BUCKET_SSECONFIG, BUCKET_TABLE_CATALOG_META_PREFIX,
            BUCKET_TABLE_CATALOG_TABLE_BUCKETS_PREFIX, BUCKET_TABLE_CONFIG, BUCKET_TABLE_RESERVED_PREFIX, BUCKET_TAGGING_CONFIG,
            BUCKET_TARGETS_FILE, BUCKET_VERSIONING_CONFIG, BUCKET_WEBSITE_CONFIG, BucketMetadata, OBJECT_LOCK_CONFIG,
            load_bucket_metadata, table_catalog_path_hash,
        };
    }

    pub mod durability {
        pub use crate::bucket::durability::{
            BUCKET_DURABILITY_MODE_NONE, BUCKET_DURABILITY_MODE_RELAXED, BUCKET_DURABILITY_MODE_STRICT, BucketDurabilityConfig,
        };
    }

    pub mod metadata_sys {
        pub use crate::bucket::metadata_sys::{
            BucketMetadataSys, acquire_bucket_metadata_transaction_lock, delete, get, get_accelerate_config, get_bucket_policy,
            get_bucket_policy_raw, get_bucket_targets_config, get_config_from_disk, get_cors_config, get_durability_config,
            get_global_bucket_metadata_sys, get_lifecycle_config, get_logging_config, get_notification_config,
            get_object_lock_config, get_public_access_block_config, get_quota_config, get_replication_config,
            get_request_payment_config, get_sse_config, get_tagging_config, get_versioning_config, get_website_config,
            init_bucket_metadata_sys, list_bucket_targets, reload_bucket_metadata, remove_bucket_metadata, set_bucket_metadata,
            update, update_bucket_targets_under_transaction_lock, update_config_with, update_under_transaction_lock,
        };
    }

    pub mod migration {
        pub use crate::bucket::migration::{LegacyBlobDecryptFn, try_migrate_bucket_metadata, try_migrate_iam_config};
    }

    pub mod object_lock {
        pub use crate::bucket::object_lock::{ObjectLockApi, ObjectLockStatusExt};

        pub mod objectlock {
            pub use crate::bucket::object_lock::objectlock::{get_object_legalhold_meta, get_object_retention_meta};
        }

        pub mod objectlock_sys {
            pub use crate::bucket::object_lock::objectlock_sys::{
                BucketObjectLockSys, ObjectLockBlockReason, add_years, check_object_lock_for_deletion,
                check_retention_for_modification, is_retention_active,
            };
        }
    }

    pub mod policy_sys {
        pub use crate::bucket::policy_sys::PolicySys;
    }

    pub mod quota {
        pub use crate::bucket::quota::{BucketQuota, QuotaCheckResult, QuotaError, QuotaOperation};

        pub mod checker {
            pub use crate::bucket::quota::checker::QuotaChecker;
        }
    }

    pub mod replication {
        pub use crate::bucket::replication::{
            BucketReplicationResyncStatus, BucketStats, DeletedObjectReplicationInfo, DurableMrfBacklog, DynReplicationPool,
            MrfOpKind, MrfReplicateEntry, MustReplicateOptions, ObjectOpts, REPLICATE_INCOMING_DELETE, ReplicateDecision,
            ReplicateObjectInfo, ReplicationConfig, ReplicationConfigurationExt, ReplicationDeleteScheduleInput,
            ReplicationDeleteStateSource, ReplicationHealQueueResult, ReplicationObjectBridge, ReplicationObjectIO,
            ReplicationOperation, ReplicationPoolTrait, ReplicationPriority, ReplicationQueueAdmission, ReplicationScannerBridge,
            ReplicationState, ReplicationStats, ReplicationStatusType, ReplicationStorage, ReplicationTargetValidationError,
            ReplicationType, ResyncOpts, ResyncStatusType, TargetReplicationResyncStatus, VersionPurgeStatusType,
            delete_replication_state_from_config, delete_replication_version_id, get_global_replication_pool,
            get_global_replication_stats, init_background_replication, read_durable_mrf_backlog, replication_state_to_filemeta,
            replication_status_to_filemeta, replication_statuses_map, replication_target_arns, resync_start_conflict_id,
            should_remove_replication_target, should_schedule_delete_replication, should_use_existing_delete_replication_info,
            should_use_existing_delete_replication_source, validate_replication_config_target_arns,
            version_purge_status_to_filemeta,
        };
    }

    pub mod tagging {
        pub use crate::bucket::tagging::{decode_tags, decode_tags_to_map, encode_tags};
    }

    pub mod target {
        pub use crate::bucket::target::{ARN, BucketTarget, BucketTargetType, BucketTargets, Credentials, LatencyStat};
    }

    pub mod utils {
        pub use crate::bucket::utils::{
            check_bucket_and_object_names, check_list_objs_args, check_object_name_for_length_and_slash,
            check_valid_bucket_name_strict, deserialize, has_bad_path_component, is_meta_bucketname, is_valid_object_prefix,
            serialize,
        };
    }

    pub mod versioning {
        pub use crate::bucket::versioning::VersioningApi;
    }

    pub mod versioning_sys {
        pub use crate::bucket::versioning_sys::BucketVersioningSys;
    }
}

pub mod cache {
    pub use crate::cache_value::metacache_set::{ListPathRawOptions, list_path_raw};
}

pub mod capacity {
    pub use crate::core::pools::{
        PoolDecommissionInfo, PoolStatus, get_total_usable_capacity, get_total_usable_capacity_free, path2_bucket_object,
        path2_bucket_object_with_base_path,
    };
    pub use crate::store::utils::is_reserved_or_invalid_bucket;
}

pub mod client {
    pub mod admin_handler_utils {
        pub use crate::client::admin_handler_utils::AdminError;
    }

    pub mod api_put_object {
        pub use crate::client::api_put_object::{AdvancedPutOptions, PutObjectOptions};
    }

    pub mod object_api_utils {
        pub use crate::client::object_api_utils::{ObjReaderFn, PutObjReader, get_raw_etag, new_getobjectreader, to_s3s_etag};
    }

    pub mod transition_api {
        pub use crate::client::transition_api::{
            BucketLookupType, CreateBucketConfiguration, LocationConstraint, ObjectInfo, ObjectMultipartInfo, Options,
            PutObjectPartOptions, ReadCloser, ReaderImpl, RequestMetadata, RestoreInfo, SendRequest, TransitionClient,
            TransitionCore, UploadInfo, to_object_info,
        };
    }
}

pub mod cluster {
    pub use crate::cluster::{
        ClusterControlPlane, ClusterControlPlaneSnapshot, ClusterDriveMembership, ClusterEndpointType, ClusterLocalNodeStorage,
        ClusterLocalNodeStorageSnapshot, ClusterMembershipSnapshot, ClusterNodeMembership, ClusterPeerHealth,
        ClusterPeerHealthSnapshot, ClusterPoolState, ClusterPoolStateSnapshot, ClusterRpcBoundarySnapshot,
        ClusterRpcChannelSnapshot, ClusterRpcPlane, ClusterRpcTransport, local_node_storage_snapshot_from_membership,
        membership_snapshot_from_endpoint_pools, peer_health_snapshot_from_membership, pool_state_snapshot_from_endpoint_pools,
        rpc_boundary_snapshot, topology_snapshot_from_endpoint_pools, topology_snapshot_from_endpoint_pools_with_capabilities,
    };
}

pub mod compression {
    pub use crate::io_support::compress::{MIN_DISK_COMPRESSIBLE_SIZE, is_disk_compressible, is_disk_compression_enabled};
}

pub mod config {
    pub mod com {
        pub use crate::config::com::{
            COMMA_SEPARATED_LISTS, CONFIG_PREFIX, ENV_CONFIG_RECOVER_ON_CORRUPTION, STORAGE_CLASS_SUB_SYS,
            ServerConfigCorruptError, ServerConfigSaveResult, ServerConfigSnapshot, delete_config,
            is_server_config_corrupt_error, lookup_configs, read_config, read_config_no_lock, read_config_with_metadata,
            read_config_without_migrate, read_config_without_migrate_no_lock, read_existing_server_config_no_lock,
            read_server_config_snapshot, save_config, save_config_no_lock, save_config_with_opts, save_server_config,
            save_server_config_no_lock, save_server_config_snapshot, save_server_config_snapshot_with_generation,
            server_config_path, try_migrate_server_config, with_config_object_read_lock, with_config_object_write_lock,
            with_server_config_read_lock, with_server_config_write_lock,
        };
    }

    pub mod storageclass {
        pub use crate::config::storageclass::{
            CAPABILITY_CONTRACT_VERSION, CLASS_RRS, CLASS_STANDARD, Config, DEEP_ARCHIVE, DEFAULT_INLINE_BLOCK, DEFAULT_KVS,
            DEFAULT_RRS_PARITY, EXPRESS_ONEZONE, GLACIER, GLACIER_IR, INLINE_BLOCK, INLINE_BLOCK_ENV, INTELLIGENT_TIERING,
            LEGACY_LABEL_BEHAVIOR, MIN_PARITY_DRIVES, ONEZONE_IA, OPTIMIZE, OPTIMIZE_ENV, OUTPOSTS, RRS, RRS_ENV, SCHEME_PREFIX,
            SNOW, STANDARD, STANDARD_ENV, STANDARD_IA, SUPPORTED_WRITE_CLASSES, StorageClass, UNSUPPORTED_WRITE_ERROR,
            default_parity_count, effective_class, is_supported_write_class, lookup_config, lookup_config_for_pools,
            parse_storage_class, validate_parity, validate_parity_inner,
        };
    }

    pub use crate::config::{
        RUSTFS_CONFIG_PREFIX, init, init_global_config_sys, set_global_storage_class, try_migrate_server_config,
    };
}

pub mod data_usage {
    pub use crate::data_usage::{
        DATA_USAGE_CACHE_NAME, apply_bucket_usage_memory_overlay, compute_bucket_usage,
        init_compression_total_memory_from_backend, invalidate_data_usage_snapshot_cache, live_bucket_usage_computations,
        load_compression_total_from_memory, load_data_usage_from_backend, load_data_usage_from_backend_cached,
        record_bucket_delete_marker_memory, record_bucket_object_delete_memory, record_bucket_object_version_write_memory,
        record_bucket_object_write_memory, record_bucket_object_write_unknown_previous_memory, record_compression_total_memory,
        refresh_bucket_usage_from_object_layer, refresh_versioned_bucket_usage_from_object_layer,
        remove_bucket_usage_from_backend, replace_bucket_usage_memory_from_info, store_compression_total_in_backend,
        store_data_usage_in_backend,
    };
}

pub mod disk {
    pub use crate::disk::disk_store::get_object_disk_read_timeout;
    pub use crate::disk::local::ScanGuard;
    pub use crate::disk::{
        BATCH_READ_VERSION_MAX_ITEMS, BUCKET_META_PREFIX, BatchReadVersionItem, BatchReadVersionReq, BatchReadVersionResp,
        CheckPartsResp, DeleteOptions, Disk, DiskAPI, DiskInfo, DiskInfoOptions, DiskLocation, DiskOption, DiskStore,
        FileInfoVersions, FileReader, FileWriter, HEALING_MARKER_PATH, NsScannerOpenRequest, OldCurrentSize,
        PartTransactionAction, RUSTFS_META_BUCKET, ReadMultipleReq, ReadMultipleResp, ReadOptions, RenameDataResp,
        STORAGE_FORMAT_FILE, SnapshotLeaseToken, UpdateMetadataOpts, VolumeInfo, WalkDirOptions, new_disk,
        validate_batch_read_version_item_count,
    };
    pub use bytes::Bytes;
    pub use endpoint::Endpoint;
    pub use error::DiskError;
    pub use error_reduce::is_all_buckets_not_found;

    pub mod endpoint {
        pub use crate::layout::endpoint::{Endpoint, EndpointType};
    }

    pub mod error {
        pub use crate::disk::error::{BitrotErrorType, DiskError, Error, FileAccessDeniedWithContext, Result};
    }

    pub mod error_reduce {
        pub use crate::disk::error_reduce::{
            BASE_IGNORED_ERRS, BUCKET_OP_IGNORED_ERRS, OBJECT_OP_IGNORED_ERRS, WriteQuorumFailureSummary,
            build_write_quorum_failure_summary, count_errs, count_retryable_failures, is_all_buckets_not_found, is_ignored_err,
            reduce_errs, reduce_quorum_errs, reduce_read_quorum_errs, reduce_write_quorum_errs,
        };
    }
}

pub mod error {
    pub use crate::error::{
        Error, Result, StorageError, classify_system_path_failure_reason, is_err_bucket_not_found, is_err_object_not_found,
        is_err_version_not_found,
    };
}

pub mod erasure {
    pub use crate::erasure::coding::{
        BitrotReader, BitrotWriter, BitrotWriterWrapper, CustomWriter, Erasure, ErasureConstructionError, ReedSolomonEncoder,
        calc_shard_size, calc_shard_size_legacy,
    };
}

pub mod event {
    pub use crate::event::name::EventName;
    pub use crate::services::event_notification::{EventArgs, register_event_dispatch_hook};
}

pub mod global {
    pub use crate::runtime::global::{
        set_global_endpoints, set_global_region, set_global_rustfs_port, set_object_store_resolver, shutdown_background_services,
        update_erasure_type,
    };
}

pub mod runtime {
    pub use crate::runtime::instance::{InstanceContext, bootstrap_ctx};
    pub use crate::runtime::sources::{
        boot_time, bucket_monitor, deployment_id, endpoint_pools, expiry_state_handle, first_cluster_node_is_local,
        global_lock_client, global_lock_clients, global_tier_config_mgr, local_disk_map_read, object_store_handle, region,
        rustfs_port, setup_is_dist_erasure, setup_is_erasure, setup_is_erasure_sd, transition_state_handle,
    };
}

pub mod layout {
    pub use crate::layout::disks_layout::DisksLayout;
    pub use crate::layout::endpoints::{EndpointServerPools, Endpoints, PoolEndpoints, SetupType};
}

pub mod metrics {
    pub use crate::services::metrics_realtime::{CollectMetricsOpts, MetricType, collect_local_metrics};
}

pub mod notification {
    pub use crate::services::notification_sys::{
        NotificationPeerErr, NotificationSys, get_global_notification_sys, new_global_notification_sys,
        start_remote_version_state_fleet_probe,
    };
}

pub mod object {
    pub use crate::object_api::{
        BLOCK_SIZE_V2, ERASURE_ALGORITHM, EncryptionResolutionError, EncryptionResolutionErrorKind, GetObjectBodyCacheHook,
        GetObjectBodyCacheHookLookup, GetObjectBodySource, GetObjectReader, ObjectEncryptionResolver, ObjectInfo,
        ObjectMutationHook, ObjectOptions, PutObjReader, RangedDecompressReader, ReadEncryptionMaterial, ReadEncryptionMode,
        ReadEncryptionRequest, StreamConsumer, get_object_body_cache_plaintext_len, lookup_get_object_body_cache_hook,
        register_get_object_body_cache_hook, register_object_mutation_hook, unregister_get_object_body_cache_hook,
        unregister_object_mutation_hook,
    };
    pub use crate::store::PreparedGetObjectReader;
}

pub mod rebalance {
    pub use crate::services::rebalance::{
        DiskStat, RebalSaveOpt, RebalStatus, RebalanceCleanupWarningEntry, RebalanceCleanupWarnings, RebalanceInfo,
        RebalanceMeta, RebalanceStats, RebalanceStopPropagationRecord, decode_rebalance_stop_propagation_record,
        encode_rebalance_stop_propagation_record,
    };
}

pub mod rio {
    pub use crate::io_support::rio::{
        DecryptReader, DynReader, EncryptReader, HardLimitReader, HashReader, ReadStream, Reader, WriteEncryption, WritePlan,
        boxed_reader, compression_metadata_value, wrap_reader,
    };
}

pub mod rpc {
    pub use crate::cluster::rpc::{
        AuthenticatedChannel, LocalPeerS3Client, PEER_RESTDRY_RUN, PEER_RESTSIGNAL, PEER_RESTSUB_SYS, PeerRestClient,
        PeerS3Client, S3PeerSys, SERVICE_SIGNAL_REFRESH_CONFIG, SERVICE_SIGNAL_RELOAD_DYNAMIC, ScannerBucketListing,
        ScannerPeerActivity, TONIC_RPC_PREFIX, TonicInterceptor, gen_signature_headers, gen_tonic_replay_scope_headers,
        gen_tonic_signature_headers, gen_tonic_signature_interceptor, node_service_time_out_client,
        node_service_time_out_client_no_auth, normalize_tonic_rpc_audience, set_tonic_canonical_body_digest,
        sign_ns_scanner_capability, sign_tonic_rpc_response_proof, tonic_boot_epoch_challenge, tonic_boot_epoch_response_headers,
        verify_rpc_signature, verify_tonic_boot_epoch_response, verify_tonic_canonical_body_digest,
        verify_tonic_mutation_body_digest, verify_tonic_rpc_response_proof, verify_tonic_rpc_signature,
        verify_tonic_rpc_signature_with_bootstrap,
    };
}

pub mod set_disk {
    pub use crate::set_disk::{DEFAULT_READ_BUFFER_SIZE, SetDisks, get_lock_acquire_timeout, is_valid_storage_class};
}

pub mod store_list {
    pub use crate::store::list_objects::{ListPathOptions, max_keys_plus_one};
}

pub mod storage {
    pub use crate::store::HealWalkVersion;
    pub use crate::store::{
        ECStore, all_local_disk, all_local_disk_path, find_local_disk_by_ref, init_local_disks,
        init_local_disks_with_instance_ctx, init_lock_clients, prewarm_local_disk_id_map,
        prewarm_local_disk_id_map_with_instance_ctx,
    };
}

pub mod tier {
    #[allow(clippy::module_inception)]
    pub mod tier {
        pub use crate::services::tier::tier::{
            ERR_TIER_BACKEND_IN_USE, ERR_TIER_BACKEND_NOT_EMPTY, ERR_TIER_INVALID_CONFIG, ERR_TIER_MISSING_CREDENTIALS,
            ERR_TIER_TYPE_UNSUPPORTED, TIER_CONFIG_FILE, TIER_CONFIG_FORMAT, TIER_CONFIG_V1, TIER_CONFIG_VERSION, TierConfigMgr,
            TierConfigUpdateError, is_err_config_not_found, try_migrate_tiering_config,
        };
    }

    pub mod tier_admin {
        pub use crate::services::tier::tier_admin::TierCreds;
    }

    pub mod tier_config {
        pub use crate::services::tier::tier_config::{
            ServicePrincipalAuth, TierAliyun, TierAzure, TierConfig, TierGCS, TierHuaweicloud, TierMinIO, TierR2, TierRustFS,
            TierS3, TierTencent, TierType, TierWasabi,
        };
    }

    pub mod tier_handlers {
        pub use crate::services::tier::tier_handlers::{
            ERR_TIER_ALREADY_EXISTS, ERR_TIER_BUCKET_NOT_FOUND, ERR_TIER_CONNECT_ERR, ERR_TIER_INVALID_CREDENTIALS,
            ERR_TIER_NAME_NOT_UPPERCASE, ERR_TIER_NOT_FOUND, ERR_TIER_PERM_ERR, ERR_TIER_RESERVED_NAME,
        };
    }

    pub mod tier_mutation_peer {
        pub use crate::services::tier::tier_mutation_peer::{
            MAX_TIER_MUTATION_PEER_COMMIT_ETAG_SIZE, TierMutationPeerError, TierMutationPeerOutcome, TierMutationPeerResult,
            TierMutationPeerState, handle_tier_mutation_peer_request,
        };
    }

    pub mod warm_backend {
        pub use crate::services::tier::warm_backend::{
            WarmBackend, WarmBackendGetOpts, WarmBackendImpl, build_transition_put_options, check_warm_backend, new_warm_backend,
        };
    }

    #[cfg(feature = "test-util")]
    pub mod test_util {
        pub use crate::services::tier::test_util::{
            FaultConfig, MockStoredObject, MockWarmBackend, MockWarmOp, TransitionCleanupStoreBarrier, TransitionMeta,
            assert_transition_meta_consistent, free_version_count, read_transition_meta, register_mock_tier,
            register_mock_tier_backend, wait_for_free_version_absence,
        };
    }
}