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
|
-- ----------------------------------------------------------------------
-- Function: pgq.sqltriga()
--
-- Trigger that generates queue events containing partial SQL.
-- It autodetects table structure.
--
-- Purpose:
-- Replication events, that only need changed column values.
--
-- Parameters:
-- arg1 - queue name
-- argX - any number of optional arg, in any order
--
-- Optinal arguments:
-- SKIP - The actual operation should be skipped (BEFORE trigger)
-- ignore=col1[,col2] - don't look at the specified arguments
-- pkey=col1[,col2] - Set pkey fields for the table, PK autodetection will be skipped
-- backup - Put urlencoded contents of old row to ev_extra2
-- colname=EXPR - Override field value with SQL expression. Can reference table
-- columns. colname can be: ev_type, ev_data, ev_extra1 .. ev_extra4
-- when=EXPR - If EXPR returns false, don't insert event.
--
-- Queue event fields:
-- ev_type - I/U/D
-- ev_data - partial SQL statement
-- ev_extra1 - table name
-- ev_extra2 - optional urlencoded backup
--
-- ----------------------------------------------------------------------
CREATE OR REPLACE FUNCTION pgq.sqltriga() RETURNS trigger
AS '$libdir/pgq_triggers', 'pgq_sqltriga' LANGUAGE C;
-- ----------------------------------------------------------------------
-- Function: pgq.logutriga()
--
-- Trigger function that puts row data in urlencoded form into queue.
--
-- Purpose:
-- Used as producer for several PgQ standard consumers (cube_dispatcher,
-- queue_mover, table_dispatcher). Basically for cases where the
-- consumer wants to parse the event and look at the actual column values.
--
-- Trigger parameters:
-- arg1 - queue name
-- argX - any number of optional arg, in any order
--
-- Optinal arguments:
-- SKIP - The actual operation should be skipped (BEFORE trigger)
-- ignore=col1[,col2] - don't look at the specified arguments
-- pkey=col1[,col2] - Set pkey fields for the table, autodetection will be skipped
-- backup - Put urlencoded contents of old row to ev_extra2
-- colname=EXPR - Override field value with SQL expression. Can reference table
-- columns. colname can be: ev_type, ev_data, ev_extra1 .. ev_extra4
-- when=EXPR - If EXPR returns false, don't insert event.
--
-- Queue event fields:
-- ev_type - I/U/D ':' pkey_column_list
-- ev_data - column values urlencoded
-- ev_extra1 - table name
-- ev_extra2 - optional urlencoded backup
--
-- Regular listen trigger example:
-- > CREATE TRIGGER triga_nimi AFTER INSERT OR UPDATE ON customer
-- > FOR EACH ROW EXECUTE PROCEDURE pgq.logutriga('qname');
--
-- Redirect trigger example:
-- > CREATE TRIGGER triga_nimi BEFORE INSERT OR UPDATE ON customer
-- > FOR EACH ROW EXECUTE PROCEDURE pgq.logutriga('qname', 'SKIP');
-- ----------------------------------------------------------------------
CREATE OR REPLACE FUNCTION pgq.logutriga() RETURNS TRIGGER
AS '$libdir/pgq_triggers', 'pgq_logutriga' LANGUAGE C;
---- disable obsolete trigger
-- ----------------------------------------------------------------------
-- Function - pgq.logtriga()
--
-- (Obsolete) Non-automatic SQL trigger. It puts row data in partial SQL form into
-- queue. It does not auto-detect table structure, it needs to be passed
-- as trigger arg.
--
-- Purpose:
-- Used by Londiste to generate replication events. The "partial SQL"
-- format is more compact than the urlencoded format but cannot be
-- parsed, only applied. Which is fine for Londiste.
--
-- Parameters:
-- arg1 - queue name
-- arg2 - column type spec string where each column corresponds to one char (k/v/i).
-- if spec string is shorter than column list, rest of columns default to 'i'.
--
-- Column types:
-- k - pkey column
-- v - normal data column
-- i - ignore column
--
-- Queue event fields:
-- ev_type - I/U/D
-- ev_data - partial SQL statement
-- ev_extra1 - table name
--
-- ----------------------------------------------------------------------
-- CREATE OR REPLACE FUNCTION pgq.logtriga() RETURNS trigger
-- AS '$libdir/pgq_triggers', 'pgq_logtriga' LANGUAGE C;
|
