machi/include/machi_projection.hrl

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%% -------------------------------------------------------------------
%%
%% Copyright (c) 2007-2014 Basho Technologies, Inc. All Rights Reserved.
%%
%% This file is provided to you 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.
%%
%% -------------------------------------------------------------------
-ifndef(MACHI_PROJECTION_HRL).
-define(MACHI_PROJECTION_HRL, true).
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-type pv1_consistency_mode() :: 'ap_mode' | 'cp_mode'.
-type pv1_csum() :: binary().
-type pv1_epoch() :: {pv1_epoch_n(), pv1_csum()}.
-type pv1_epoch_n() :: non_neg_integer().
-type pv1_server() :: atom() | binary().
-type pv1_timestamp() :: {non_neg_integer(), non_neg_integer(), non_neg_integer()}.
-record(p_srvr, {
name :: pv1_server(),
proto_mod = 'machi_flu1_client' :: atom(), % Module name
address :: term(), % Protocol-specific
port :: term(), % Protocol-specific
props = [] :: list() % proplist for other related info
}).
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-record(flap_i, {
flap_count :: {term(), term()},
flapping_me = false :: boolean(),
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all_hosed :: list(),
all_flap_counts :: list(),
bad :: list()
}).
-type p_srvr() :: #p_srvr{}.
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-type p_srvr_dict() :: orddict:orddict().
-define(DUMMY_PV1_EPOCH, {0,<<0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0>>}).
-record(projection_v1, {
epoch_number :: pv1_epoch_n(),
epoch_csum :: pv1_csum(),
author_server :: pv1_server(),
all_members :: [pv1_server()],
creation_time :: pv1_timestamp(),
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mode = ap_mode :: pv1_consistency_mode(),
upi :: [pv1_server()],
repairing :: [pv1_server()],
down :: [pv1_server()],
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flap :: 'undefined' | #flap_i{}, % flapping information
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inner :: 'undefined' | #projection_v1{},
dbg :: list(), %proplist(), is checksummed
dbg2 :: list(), %proplist(), is not checksummed
members_dict :: p_srvr_dict()
}).
-define(MACHI_DEFAULT_TCP_PORT, 50000).
-define(SHA_MAX, (1 bsl (20*8))).
%% Set a limit to the maximum chain length, so that it's easier to
%% create a consistent projection ranking score.
-define(MAX_CHAIN_LENGTH, 64).
-endif. % !MACHI_PROJECTION_HRL