aboutsummaryrefslogtreecommitdiff
path: root/src/exchangedb/0002-refresh_commitments.sql
blob: c63995c745cd1204cd2d784a2f5720abcfe0a6e8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
--
-- This file is part of TALER
-- Copyright (C) 2014--2022 Taler Systems SA
--
-- TALER is free software; you can redistribute it and/or modify it under the
-- terms of the GNU General Public License as published by the Free Software
-- Foundation; either version 3, or (at your option) any later version.
--
-- TALER 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 GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License along with
-- TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
--

CREATE FUNCTION create_table_refresh_commitments(
  IN partition_suffix VARCHAR DEFAULT NULL
)
RETURNS VOID
LANGUAGE plpgsql
AS $$
DECLARE
  table_name VARCHAR DEFAULT 'refresh_commitments';
BEGIN
  PERFORM create_partitioned_table(
    'CREATE TABLE %I'
      '(melt_serial_id BIGINT GENERATED BY DEFAULT AS IDENTITY' -- UNIQUE'
      ',rc BYTEA PRIMARY KEY CHECK (LENGTH(rc)=64)'
      ',old_coin_pub BYTEA NOT NULL'
      ',old_coin_sig BYTEA NOT NULL CHECK(LENGTH(old_coin_sig)=64)'
      ',amount_with_fee_val INT8 NOT NULL'
      ',amount_with_fee_frac INT4 NOT NULL'
      ',noreveal_index INT4 NOT NULL'
    ') %s ;'
    ,table_name
    ,'PARTITION BY HASH (rc)'
    ,partition_suffix
  );
  PERFORM comment_partitioned_table(
     'Commitments made when melting coins and the gamma value chosen by the exchange.'
    ,table_name
    ,partition_suffix
  );
  PERFORM comment_partitioned_column(
     'The gamma value chosen by the exchange in the cut-and-choose protocol'
    ,'noreveal_index'
    ,table_name
    ,partition_suffix
  );
  PERFORM comment_partitioned_column(
     'Commitment made by the client, hash over the various client inputs in the cut-and-choose protocol'
    ,'rc'
    ,table_name
    ,partition_suffix
  );
  PERFORM comment_partitioned_column(
     'Coin being melted in the refresh process.'
    ,'old_coin_pub'
    ,table_name
    ,partition_suffix
  );
END
$$;


CREATE FUNCTION constrain_table_refresh_commitments(
  IN partition_suffix VARCHAR
)
RETURNS void
LANGUAGE plpgsql
AS $$
DECLARE
  table_name VARCHAR DEFAULT 'refresh_commitments';
BEGIN
  table_name = concat_ws('_', table_name, partition_suffix);

  -- Note: index spans partitions, may need to be materialized.
  EXECUTE FORMAT (
    'CREATE INDEX ' || table_name || '_by_old_coin_pub_index '
    'ON ' || table_name || ' '
    '(old_coin_pub);'
  );
  EXECUTE FORMAT (
    'ALTER TABLE ' || table_name ||
    ' ADD CONSTRAINT ' || table_name || '_melt_serial_id_key'
    ' UNIQUE (melt_serial_id)'
  );
END
$$;


CREATE FUNCTION foreign_table_refresh_commitments()
RETURNS void
LANGUAGE plpgsql
AS $$
DECLARE
  table_name VARCHAR DEFAULT 'refresh_commitments';
BEGIN
  EXECUTE FORMAT (
    'ALTER TABLE ' || table_name ||
    ' ADD CONSTRAINT ' || table_name || '_foreign_coin_pub'
    ' FOREIGN KEY (old_coin_pub) '
    ' REFERENCES known_coins (coin_pub) ON DELETE CASCADE'
  );
END
$$;


INSERT INTO exchange_tables
    (name
    ,version
    ,action
    ,partitioned
    ,by_range)
  VALUES
    ('refresh_commitments'
    ,'exchange-0002'
    ,'create'
    ,TRUE
    ,FALSE),
    ('refresh_commitments'
    ,'exchange-0002'
    ,'constrain'
    ,TRUE
    ,FALSE),
    ('refresh_commitments'
    ,'exchange-0002'
    ,'foreign'
    ,TRUE
    ,FALSE);