501 lines
18 KiB
Python
501 lines
18 KiB
Python
"""Response-callback dictionaries and the protocol/legacy selector.
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This module is the single source of truth for the mapping between Redis
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command names and the Python-side callbacks that post-process raw parser
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output into user-facing values.
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Six dictionaries are defined:
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* ``_RedisCallbacks`` — entries that produce the same Python value
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regardless of wire protocol or legacy-response selection.
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* ``_RedisCallbacksRESP2`` — RESP2 wire, legacy Python shapes.
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* ``_RedisCallbacksRESP3`` — RESP3 wire, Python shapes from the previous
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RESP3 callbacks.
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* ``_RedisCallbacksRESP2Unified`` — RESP2 wire, unified Python shapes
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(``legacy_responses=False``).
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* ``_RedisCallbacksRESP3Unified`` — RESP3 wire, unified Python shapes
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(``legacy_responses=False``).
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* ``_RedisCallbacksRESP3toRESP2Legacy`` — RESP3 wire converted back to the
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legacy RESP2 Python shapes for users who keep ``legacy_responses=True``
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on a RESP3 connection.
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``get_response_callbacks`` merges ``_RedisCallbacks`` with the appropriate
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protocol-specific overlay. Callers wrap the returned dict in
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``CaseInsensitiveDict``.
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"""
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from typing import Any, Callable, Optional
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from redis.utils import str_if_bytes
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from .helpers import (
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bool_ok,
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bzpop_score_resp3_to_resp2_legacy,
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bzpop_score_unified,
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float_or_none,
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hrandfield_resp3_to_resp2_legacy,
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hrandfield_unified,
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pairs_to_dict,
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parse_acl_getuser,
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parse_acl_getuser_resp3_to_resp2_legacy,
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parse_acl_getuser_unified,
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parse_acl_log,
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parse_acl_log_resp3_to_resp2_legacy,
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parse_acl_log_resp3_unified,
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parse_arinfo,
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parse_client_info,
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parse_client_kill,
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parse_client_list,
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parse_client_trackinginfo_resp3_to_resp2_legacy,
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parse_client_trackinginfo_unified,
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parse_cluster_info,
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parse_cluster_links_resp3_to_resp2_legacy,
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parse_cluster_links_unified,
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parse_cluster_nodes,
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parse_command,
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parse_command_resp3,
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parse_command_unified,
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parse_config_get,
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parse_config_get_resp3_to_resp2_legacy,
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parse_debug_object,
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parse_function_list_resp3_to_resp2_legacy,
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parse_function_list_unified,
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parse_geopos_resp3_to_resp2_legacy,
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parse_geopos_unified,
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parse_geosearch_generic,
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parse_geosearch_generic_unified,
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parse_hscan,
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parse_info,
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parse_lcs_idx_resp3_to_resp2_legacy,
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parse_lcs_idx_unified,
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parse_list_of_dicts,
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parse_list_of_dicts_resp3,
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parse_memory_stats,
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parse_memory_stats_resp3,
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parse_memory_stats_unified,
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parse_pubsub_numsub,
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parse_scan,
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parse_sentinel_get_master,
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parse_sentinel_master,
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parse_sentinel_master_resp3_to_resp2_legacy,
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parse_sentinel_master_unified,
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parse_sentinel_master_unified_resp3,
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parse_sentinel_masters,
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parse_sentinel_masters_resp3,
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parse_sentinel_masters_resp3_to_resp2_legacy,
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parse_sentinel_masters_unified,
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parse_sentinel_masters_unified_resp3,
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parse_sentinel_slaves_and_sentinels,
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parse_sentinel_slaves_and_sentinels_resp3,
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parse_sentinel_slaves_and_sentinels_resp3_to_resp2_legacy,
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parse_sentinel_slaves_and_sentinels_unified,
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parse_sentinel_slaves_and_sentinels_unified_resp3,
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parse_sentinel_state_resp3,
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parse_set_result,
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parse_slowlog_get,
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parse_stralgo,
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parse_stralgo_resp3_unified,
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parse_stralgo_unified,
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parse_stream_list,
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parse_xautoclaim,
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parse_xclaim,
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parse_xinfo_stream,
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parse_xpending,
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parse_xread,
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parse_xread_resp3,
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parse_xread_resp3_to_resp2_legacy,
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parse_xread_unified,
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parse_zadd,
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parse_zmscore,
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parse_zscan,
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parse_zscan_unified,
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sort_return_tuples,
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string_keys_to_dict,
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timestamp_to_datetime,
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zmpop_resp3_to_resp2_legacy,
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zmpop_unified,
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zpop_score_pairs,
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zpop_score_pairs_resp3_to_resp2_legacy,
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zpop_score_pairs_resp3_unified,
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zpop_score_pairs_unified,
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zset_score_for_rank,
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zset_score_for_rank_resp3,
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zset_score_for_rank_resp3_to_resp2_legacy,
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zset_score_for_rank_unified,
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zset_score_pairs,
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zset_score_pairs_resp3,
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zset_score_pairs_resp3_to_resp2_legacy,
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zset_score_pairs_resp3_to_resp2_legacy_flat,
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zset_score_pairs_unified,
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)
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_RedisCallbacks = {
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**string_keys_to_dict(
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"AUTH COPY EXPIRE EXPIREAT HEXISTS HMSET MOVE MSETNX PERSIST PSETEX "
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"PEXPIRE PEXPIREAT RENAMENX SETEX SETNX SMOVE",
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bool,
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),
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**string_keys_to_dict("HINCRBYFLOAT INCRBYFLOAT", float),
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**string_keys_to_dict(
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"ASKING FLUSHALL FLUSHDB LSET LTRIM MSET PFMERGE READONLY READWRITE "
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"RENAME SAVE SELECT SHUTDOWN SLAVEOF SWAPDB WATCH UNWATCH",
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bool_ok,
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),
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**string_keys_to_dict("XREAD XREADGROUP", parse_xread),
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**string_keys_to_dict(
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"GEORADIUS GEORADIUSBYMEMBER GEOSEARCH",
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parse_geosearch_generic,
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),
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**string_keys_to_dict("XRANGE XREVRANGE", parse_stream_list),
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"ACL GETUSER": parse_acl_getuser,
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"ACL LOAD": bool_ok,
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"ACL LOG": parse_acl_log,
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"ACL SETUSER": bool_ok,
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"ACL SAVE": bool_ok,
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"CLIENT INFO": parse_client_info,
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"CLIENT KILL": parse_client_kill,
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"CLIENT LIST": parse_client_list,
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"CLIENT PAUSE": bool_ok,
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"CLIENT SETINFO": bool_ok,
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"CLIENT SETNAME": bool_ok,
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"CLIENT UNBLOCK": bool,
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"CLUSTER ADDSLOTS": bool_ok,
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"CLUSTER ADDSLOTSRANGE": bool_ok,
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"CLUSTER DELSLOTS": bool_ok,
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"CLUSTER DELSLOTSRANGE": bool_ok,
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"CLUSTER FAILOVER": bool_ok,
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"CLUSTER FORGET": bool_ok,
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"CLUSTER INFO": parse_cluster_info,
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"CLUSTER MEET": bool_ok,
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"CLUSTER NODES": parse_cluster_nodes,
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"CLUSTER REPLICAS": parse_cluster_nodes,
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"CLUSTER REPLICATE": bool_ok,
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"CLUSTER RESET": bool_ok,
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"CLUSTER SAVECONFIG": bool_ok,
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"CLUSTER SET-CONFIG-EPOCH": bool_ok,
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"CLUSTER SETSLOT": bool_ok,
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"CLUSTER SLAVES": parse_cluster_nodes,
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"COMMAND": parse_command,
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"CONFIG RESETSTAT": bool_ok,
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"CONFIG SET": bool_ok,
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"FUNCTION DELETE": bool_ok,
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"FUNCTION FLUSH": bool_ok,
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"FUNCTION RESTORE": bool_ok,
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"GEODIST": float_or_none,
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"HSCAN": parse_hscan,
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"INFO": parse_info,
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"LASTSAVE": timestamp_to_datetime,
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"MEMORY PURGE": bool_ok,
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"MODULE LOAD": bool,
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"MODULE UNLOAD": bool,
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"PING": lambda r: str_if_bytes(r) == "PONG",
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"PUBSUB NUMSUB": parse_pubsub_numsub,
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"PUBSUB SHARDNUMSUB": parse_pubsub_numsub,
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"QUIT": bool_ok,
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"SET": parse_set_result,
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"SCAN": parse_scan,
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"SCRIPT EXISTS": lambda r: list(map(bool, r)),
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"SCRIPT FLUSH": bool_ok,
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"SCRIPT KILL": bool_ok,
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"SCRIPT LOAD": str_if_bytes,
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"SENTINEL CKQUORUM": bool_ok,
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"SENTINEL FAILOVER": bool_ok,
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"SENTINEL FLUSHCONFIG": bool_ok,
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"SENTINEL GET-MASTER-ADDR-BY-NAME": parse_sentinel_get_master,
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"SENTINEL MONITOR": bool_ok,
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"SENTINEL RESET": bool_ok,
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"SENTINEL REMOVE": bool_ok,
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"SENTINEL SET": bool_ok,
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"SLOWLOG GET": parse_slowlog_get,
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"SLOWLOG RESET": bool_ok,
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"SORT": sort_return_tuples,
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"SSCAN": parse_scan,
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"TIME": lambda x: (int(x[0]), int(x[1])),
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"XAUTOCLAIM": parse_xautoclaim,
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"XCLAIM": parse_xclaim,
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"XGROUP CREATE": bool_ok,
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"XGROUP DESTROY": bool,
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"XGROUP SETID": bool_ok,
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"ARINFO": parse_arinfo,
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"XINFO STREAM": parse_xinfo_stream,
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"XPENDING": parse_xpending,
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"ZSCAN": parse_zscan,
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}
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_RedisCallbacksRESP2 = {
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**string_keys_to_dict(
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"SDIFF SINTER SMEMBERS SUNION", lambda r: r and set(r) or set()
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),
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**string_keys_to_dict(
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"ZINTER ZRANGE ZRANGEBYSCORE ZREVRANGE ZREVRANGEBYSCORE ZUNION",
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zset_score_pairs,
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),
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**string_keys_to_dict("ZPOPMAX ZPOPMIN", zpop_score_pairs),
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**string_keys_to_dict(
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"ZREVRANK ZRANK",
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zset_score_for_rank,
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),
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**string_keys_to_dict("ZINCRBY ZSCORE", float_or_none),
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**string_keys_to_dict("BGREWRITEAOF BGSAVE", lambda r: True),
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**string_keys_to_dict("BLPOP BRPOP", lambda r: r and tuple(r) or None),
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**string_keys_to_dict(
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"BZPOPMAX BZPOPMIN", lambda r: r and (r[0], r[1], float(r[2])) or None
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),
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"ACL CAT": lambda r: list(map(str_if_bytes, r)),
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"ACL GENPASS": str_if_bytes,
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"ACL HELP": lambda r: list(map(str_if_bytes, r)),
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"ACL LIST": lambda r: list(map(str_if_bytes, r)),
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"ACL USERS": lambda r: list(map(str_if_bytes, r)),
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"ACL WHOAMI": str_if_bytes,
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"CLIENT GETNAME": str_if_bytes,
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"CLIENT TRACKINGINFO": lambda r: list(map(str_if_bytes, r)),
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"CLUSTER GETKEYSINSLOT": lambda r: list(map(str_if_bytes, r)),
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"COMMAND GETKEYS": lambda r: list(map(str_if_bytes, r)),
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"CONFIG GET": parse_config_get,
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"DEBUG OBJECT": parse_debug_object,
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"GEOHASH": lambda r: list(map(str_if_bytes, r)),
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"GEOPOS": lambda r: list(
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map(lambda ll: (float(ll[0]), float(ll[1])) if ll is not None else None, r)
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),
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"HGETALL": lambda r: r and pairs_to_dict(r) or {},
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"HOTKEYS GET": lambda r: [pairs_to_dict(m) for m in r],
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"MEMORY STATS": parse_memory_stats,
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"MODULE LIST": lambda r: [pairs_to_dict(m) for m in r],
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"RESET": str_if_bytes,
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"SENTINEL MASTER": parse_sentinel_master,
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"SENTINEL MASTERS": parse_sentinel_masters,
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"SENTINEL SENTINELS": parse_sentinel_slaves_and_sentinels,
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"SENTINEL SLAVES": parse_sentinel_slaves_and_sentinels,
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"STRALGO": parse_stralgo,
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"XINFO CONSUMERS": parse_list_of_dicts,
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"XINFO GROUPS": parse_list_of_dicts,
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"ZADD": parse_zadd,
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"ZMSCORE": parse_zmscore,
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}
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_RedisCallbacksRESP3 = {
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**string_keys_to_dict(
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"SDIFF SINTER SMEMBERS SUNION", lambda r: r and set(r) or set()
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),
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**string_keys_to_dict(
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"ZRANGE ZINTER ZPOPMAX ZPOPMIN HGETALL XREADGROUP",
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lambda r, **kwargs: r,
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),
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**string_keys_to_dict(
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"ZRANGE ZRANGEBYSCORE ZREVRANGE ZREVRANGEBYSCORE ZUNION",
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zset_score_pairs_resp3,
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),
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**string_keys_to_dict(
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"ZREVRANK ZRANK",
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zset_score_for_rank_resp3,
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),
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**string_keys_to_dict("XREAD XREADGROUP", parse_xread_resp3),
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"ACL LOG": lambda r: (
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[
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{str_if_bytes(key): str_if_bytes(value) for key, value in x.items()}
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for x in r
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]
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if isinstance(r, list)
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else bool_ok(r)
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),
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"COMMAND": parse_command_resp3,
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"CONFIG GET": parse_config_get_resp3_to_resp2_legacy,
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"MEMORY STATS": parse_memory_stats_resp3,
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"SENTINEL MASTER": parse_sentinel_state_resp3,
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"SENTINEL MASTERS": parse_sentinel_masters_resp3,
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"SENTINEL SENTINELS": parse_sentinel_slaves_and_sentinels_resp3,
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"SENTINEL SLAVES": parse_sentinel_slaves_and_sentinels_resp3,
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"STRALGO": lambda r, **options: (
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{str_if_bytes(key): str_if_bytes(value) for key, value in r.items()}
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if isinstance(r, dict)
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else str_if_bytes(r)
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),
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"XINFO CONSUMERS": parse_list_of_dicts_resp3,
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"XINFO GROUPS": parse_list_of_dicts_resp3,
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}
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# RESP2 wire, unified response shapes (``legacy_responses=False``).
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_RedisCallbacksRESP2Unified: dict[str, Callable[..., Any]] = {
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**_RedisCallbacksRESP2,
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**string_keys_to_dict(
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"ZDIFF ZINTER ZRANGE ZRANGEBYSCORE ZREVRANGE ZREVRANGEBYSCORE ZUNION",
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zset_score_pairs_unified,
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),
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**string_keys_to_dict(
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"ZPOPMAX ZPOPMIN",
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zpop_score_pairs_unified,
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),
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**string_keys_to_dict(
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"ZREVRANK ZRANK",
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zset_score_for_rank_unified,
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),
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**string_keys_to_dict(
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"BZPOPMAX BZPOPMIN",
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bzpop_score_unified,
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),
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**string_keys_to_dict("XREAD XREADGROUP", parse_xread_unified),
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**string_keys_to_dict(
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"GEORADIUS GEORADIUSBYMEMBER GEOSEARCH",
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parse_geosearch_generic_unified,
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),
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**string_keys_to_dict("BLPOP BRPOP", lambda r: r or None),
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**string_keys_to_dict("ZMPOP BZMPOP", zmpop_unified),
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"ZSCAN": parse_zscan_unified,
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"ZRANDMEMBER": zset_score_pairs_unified,
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"HRANDFIELD": hrandfield_unified,
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"ACL GETUSER": parse_acl_getuser_unified,
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"CLIENT TRACKINGINFO": parse_client_trackinginfo_unified,
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"CLUSTER GETKEYSINSLOT": lambda r, **kwargs: r,
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"CLUSTER LINKS": parse_cluster_links_unified,
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"COMMAND": parse_command_unified,
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"COMMAND GETKEYS": lambda r, **kwargs: r,
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"FUNCTION LIST": parse_function_list_unified,
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"GEOPOS": parse_geopos_unified,
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"LCS": parse_lcs_idx_unified,
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"MEMORY STATS": parse_memory_stats_unified,
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"SENTINEL MASTER": parse_sentinel_master_unified,
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"SENTINEL MASTERS": parse_sentinel_masters_unified,
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"SENTINEL SENTINELS": parse_sentinel_slaves_and_sentinels_unified,
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"SENTINEL SLAVES": parse_sentinel_slaves_and_sentinels_unified,
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"STRALGO": parse_stralgo_unified,
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}
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# RESP3 wire, unified response shapes (``legacy_responses=False``).
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_RedisCallbacksRESP3Unified: dict[str, Callable[..., Any]] = {
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**_RedisCallbacksRESP3,
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**string_keys_to_dict(
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"ZDIFF ZINTER ZRANGE ZRANGEBYSCORE ZREVRANGE ZREVRANGEBYSCORE ZUNION",
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zset_score_pairs_resp3,
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),
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**string_keys_to_dict(
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"ZPOPMAX ZPOPMIN",
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zpop_score_pairs_resp3_unified,
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),
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**string_keys_to_dict(
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"BZPOPMAX BZPOPMIN",
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bzpop_score_unified,
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),
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**string_keys_to_dict("XREAD XREADGROUP", parse_xread_unified),
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**string_keys_to_dict(
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"GEORADIUS GEORADIUSBYMEMBER GEOSEARCH",
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parse_geosearch_generic_unified,
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),
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"ZSCAN": parse_zscan_unified,
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"ZRANDMEMBER": zset_score_pairs_resp3,
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"ACL CAT": lambda r: list(map(str_if_bytes, r)),
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"ACL GENPASS": str_if_bytes,
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"ACL HELP": lambda r: list(map(str_if_bytes, r)),
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"ACL LIST": lambda r: list(map(str_if_bytes, r)),
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"ACL LOG": parse_acl_log_resp3_unified,
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"ACL USERS": lambda r: list(map(str_if_bytes, r)),
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"ACL WHOAMI": str_if_bytes,
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"CLIENT GETNAME": str_if_bytes,
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"CLIENT TRACKINGINFO": parse_client_trackinginfo_unified,
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"CLUSTER LINKS": parse_cluster_links_unified,
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"COMMAND": parse_command_unified,
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"FUNCTION LIST": parse_function_list_unified,
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"GEOHASH": lambda r: list(map(str_if_bytes, r)),
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"LCS": parse_lcs_idx_unified,
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"RESET": str_if_bytes,
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"SENTINEL MASTER": parse_sentinel_master_unified_resp3,
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"SENTINEL MASTERS": parse_sentinel_masters_unified_resp3,
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"SENTINEL SENTINELS": parse_sentinel_slaves_and_sentinels_unified_resp3,
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"SENTINEL SLAVES": parse_sentinel_slaves_and_sentinels_unified_resp3,
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"STRALGO": parse_stralgo_resp3_unified,
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}
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# RESP3 wire converted back to the legacy RESP2 Python shapes. Only the
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# entries needed to undo RESP3-side differences are listed; everything
|
|
# else falls through to ``_RedisCallbacks``. Scores are re-encoded to bytes
|
|
# before being passed to ``score_cast_func`` so the callable observes the
|
|
# same input type it would on a RESP2 connection.
|
|
_RedisCallbacksRESP3toRESP2Legacy: dict[str, Callable[..., Any]] = {
|
|
**string_keys_to_dict(
|
|
"SDIFF SINTER SMEMBERS SUNION", lambda r: r and set(r) or set()
|
|
),
|
|
**string_keys_to_dict(
|
|
"ZINTER ZRANGE ZRANGEBYSCORE ZREVRANGE ZREVRANGEBYSCORE ZUNION",
|
|
zset_score_pairs_resp3_to_resp2_legacy,
|
|
),
|
|
"ZDIFF": zset_score_pairs_resp3_to_resp2_legacy_flat,
|
|
"ZRANDMEMBER": zset_score_pairs_resp3_to_resp2_legacy_flat,
|
|
**string_keys_to_dict(
|
|
"ZPOPMAX ZPOPMIN",
|
|
zpop_score_pairs_resp3_to_resp2_legacy,
|
|
),
|
|
**string_keys_to_dict(
|
|
"BZPOPMAX BZPOPMIN",
|
|
bzpop_score_resp3_to_resp2_legacy,
|
|
),
|
|
**string_keys_to_dict(
|
|
"ZREVRANK ZRANK",
|
|
zset_score_for_rank_resp3_to_resp2_legacy,
|
|
),
|
|
**string_keys_to_dict("BGREWRITEAOF BGSAVE", lambda r: True),
|
|
**string_keys_to_dict("XREAD XREADGROUP", parse_xread_resp3_to_resp2_legacy),
|
|
**string_keys_to_dict("BLPOP BRPOP", lambda r: r and tuple(r) or None),
|
|
**string_keys_to_dict("ZMPOP BZMPOP", zmpop_resp3_to_resp2_legacy),
|
|
"HRANDFIELD": hrandfield_resp3_to_resp2_legacy,
|
|
"ACL CAT": lambda r: list(map(str_if_bytes, r)),
|
|
"ACL GENPASS": str_if_bytes,
|
|
"ACL GETUSER": parse_acl_getuser_resp3_to_resp2_legacy,
|
|
"ACL HELP": lambda r: list(map(str_if_bytes, r)),
|
|
"ACL LIST": lambda r: list(map(str_if_bytes, r)),
|
|
"ACL LOG": parse_acl_log_resp3_to_resp2_legacy,
|
|
"ACL USERS": lambda r: list(map(str_if_bytes, r)),
|
|
"ACL WHOAMI": str_if_bytes,
|
|
"CLIENT GETNAME": str_if_bytes,
|
|
"CLIENT TRACKINGINFO": parse_client_trackinginfo_resp3_to_resp2_legacy,
|
|
"CLUSTER GETKEYSINSLOT": lambda r: list(map(str_if_bytes, r)),
|
|
"CLUSTER LINKS": parse_cluster_links_resp3_to_resp2_legacy,
|
|
"COMMAND GETKEYS": lambda r: list(map(str_if_bytes, r)),
|
|
"CONFIG GET": parse_config_get_resp3_to_resp2_legacy,
|
|
"DEBUG OBJECT": parse_debug_object,
|
|
"FUNCTION LIST": parse_function_list_resp3_to_resp2_legacy,
|
|
"GEOHASH": lambda r: list(map(str_if_bytes, r)),
|
|
"GEOPOS": parse_geopos_resp3_to_resp2_legacy,
|
|
"LCS": parse_lcs_idx_resp3_to_resp2_legacy,
|
|
"MEMORY STATS": parse_memory_stats_resp3,
|
|
"RESET": str_if_bytes,
|
|
"SENTINEL MASTER": parse_sentinel_master_resp3_to_resp2_legacy,
|
|
"SENTINEL MASTERS": parse_sentinel_masters_resp3_to_resp2_legacy,
|
|
"SENTINEL SENTINELS": parse_sentinel_slaves_and_sentinels_resp3_to_resp2_legacy,
|
|
"SENTINEL SLAVES": parse_sentinel_slaves_and_sentinels_resp3_to_resp2_legacy,
|
|
"XINFO CONSUMERS": parse_list_of_dicts_resp3,
|
|
"XINFO GROUPS": parse_list_of_dicts_resp3,
|
|
}
|
|
|
|
|
|
def get_response_callbacks(
|
|
user_protocol: Optional[int],
|
|
legacy_responses: bool,
|
|
) -> dict[str, Callable[..., Any]]:
|
|
"""Return the merged callback dict for the given (protocol, legacy)
|
|
combination.
|
|
|
|
``user_protocol`` is the value the user supplied to the client
|
|
constructor (``None`` means "not specified"). ``legacy_responses``
|
|
defaults to ``True`` and selects today's RESP2-style Python shapes
|
|
even when the wire protocol is RESP3.
|
|
|
|
Callers wrap the returned dict in ``CaseInsensitiveDict``.
|
|
"""
|
|
callbacks: dict[str, Callable[..., Any]] = dict(_RedisCallbacks)
|
|
if legacy_responses:
|
|
if user_protocol is None:
|
|
callbacks.update(_RedisCallbacksRESP3toRESP2Legacy)
|
|
elif user_protocol in (3, "3"):
|
|
callbacks.update(_RedisCallbacksRESP3)
|
|
else:
|
|
callbacks.update(_RedisCallbacksRESP2)
|
|
else:
|
|
if user_protocol is None or user_protocol in (3, "3"):
|
|
callbacks.update(_RedisCallbacksRESP3Unified)
|
|
else:
|
|
callbacks.update(_RedisCallbacksRESP2Unified)
|
|
return callbacks
|